A heat exchanger and an air conditioning system including the heat exchanger. The heat exchanger includes heat exchange tubes and fins, with the fin including a fin body and heat exchange tube grooves formed in the fin body, into which at least one heat exchange tube is inserted. The heat exchange tube groove includes an open first groove end, a second groove end and two groove walls. At least one of the groove walls includes a plurality of heat exchange tube guiding segments, which include first and second heat exchange tube guiding segments arranged in sequence from the first groove end to the second groove end. A line connecting between two endpoints of the first heat exchange tube guiding segment is inclined at a first angle relative to a reference plane defined by the first and second directions, and a line connecting between two endpoints of the second heat exchange tube guiding segment is inclined at a second angle relative to the reference plane when viewed in a direction perpendicular to the fin body, and the second angle is greater than the first angle and less than 90 degrees. Therefore, a performance of the heat exchanger and air conditioning system may be improved.
F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
A steer by wire system (1) for steering a vehicle with a steering mechanics (8), the steer by wire system (1) having a steering input device (2) and a first actuating arrangement (5), wherein the first actuating arrangement (5) includes a first electric motor (5a), which is in connection to the steering input device (2), and a first hydraulic unit (5d), which is operatively coupled to the first electric motor (5a), wherein the first hydraulic unit (5) is configured to be fluidly connected to the steering mechanics (8). The objective of the present disclosure is to provide a steer by wire system (1) having a large range of steering forces. This objective is solved by a steer by wire system (1) including a second actuating arrangement (6) being structured and coupled analogously to the first actuating arrangement (5).
A control system for controlling parallel connected power converters includes a data processing system (101-103) configured to form, for each power converter, a frequency droop value (Δfdroop_n) based on electric power of the power converter, and to change a frequency reference (fref_n) of each power converter by the frequency droop value of the power converter. The data processing system forms an arithmetic average of the frequency droop values, forms a correction value based on the arithmetic average of the frequency droop values, and changes the frequency reference (fref_n) of each power converter by the correction value to drive the arithmetic average towards zero. The driving the arithmetic average towards zero reduces undesired frequency drift of the power converters.
H02M 7/493 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
H02J 3/24 - Arrangements for preventing or reducing oscillations of power in networks
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02M 7/539 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
6.
HYDRAULIC AXIAL PISTON UNIT AND METHOD FOR CONTROLLING OF A HYDRAULIC AXIAL PISTON UNIT
Hydraulic axial piston unit includes a rotatable cylinder block and a valve segment with two pressure ports. An IDC control port and an ODC control port are located on the valve segment in circumferential direction between the circumferential ends of the pressure ports such that a cylinder bore can be fluidly connected to the IDC control port or the ODC control port when the associated working piston is at or close to its inner dead center or outer dead center. The circumferential distance from the control ports to the pressure ports is smaller than the circumferential extension of the cylinder bores. A first and a second bypass line each connecting one of the control ports are provided with an adjustable orifice in the first bypass line, capable of continuously variably opening and closing the first bypass line in order to enable an adjustable fluid flow connection between the connected pressure port and the connected pressure port.
F04B 1/324 - Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
F04B 1/2021 - Details or component parts characterised by the contact area between cylinder barrel and valve plate
F04B 49/00 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups
The invention relates a mechanical connector device (1) for connecting a housing (2) of an actuated valve (3) with a housing (22) of an actuation control unit (4). The mechanical connector device (1) provides a spacing and/or is designed and arranged as a spacer between at least an outer surface of the housing (2) of the actuated valve (3) and the electrical and/or electronic components (26) of the actuation control unit (4). The mechanical connector device (1) comprises an inner void (10) with circumferentially arranged sidewalls (5, 6, 7, 8) surrounding said inner void (10).
The multi-compressor system (7) includes a plurality of compressors (8) which are parallelly coupled; a common suction line (14) and inlet connection lines (15) each connecting the common suction line (14) to a suction fitting (11) of a respective compressor (8); a common discharge line (16) and outlet connection lines (17) each connecting the common discharge line (16) to a discharge fitting (12) of a respective compressor (8); a plurality of individual oil balancing lines (18) each fluidly connecting low pressure volumes of two respective compressors (8) of the plurality compressors, at least one compressor (8) comprising two oil balancing line connections (19) formed in the respective compressor shell (9) and each connected to a respective individual oil balancing line (18), and two compressors including a single oil balancing line connection (19) formed in the respective compressor shell (9) and connected to a respective individual oil balancing line (18); and a controller configured to operate the multi-compressor system (7) according to a plurality of predetermined authorized operating configurations.
A sensor assembly includes an electrical connector with an annular seat, a media connector, at least one PCBA with a PCBA slot, a ground bracket with at least one ground bracket key inserted into the PCBA slot and at least one capsule, wherein an internal capsule annular seat abuts the annular seat. The disclosure further discloses a method for assembling the sensor assembly having the steps of connecting the ground bracket to the media connector; connecting the capsule to the media connector; inserting the PCBA into the capsule; and inserting the electrical connector at least partially into the capsule.
A ball support arrangement for a piston shoe arrangement (1), wherein the piston shoe arrangement (1) is configured to be provided in an axial piston machine, wherein the piston shoe arrangement (1) includes a piston body (2) having a ball shaped end (3) and a piston shoe (4), wherein the ball shaped end (3) is provided in the piston shoe (4), wherein the ball support arrangement is arranged between the piston shoe (4) and the balls shaped end (3). The objective of the present invention is to provide a ball support arrangement, which is easy to replace and low on maintenance. This objective is solved by a ball support arrangement, which is separate and replaceable, wherein at least a ball portion (5) of the ball support arrangement is configured to accommodate at least part of the ball shaped end (3).
A fluid rotary machine (100, 200) includes a first movement chain with a motor (101, 201) including a motor shaft (102, 202) rotationally coupled to a valve element (103, 203), for example a disc valve element (103) or a spool valve element (203), and a motor control unit configured to control rotational movement of the motor shaft (102, 202). The valve element (103, 203) is configured to control a fluid flow to a gear wheel (114, 214) of a second movement chain. The second movement chain includes the gear wheel (114, 214), a cardan shaft (116, 216) and an output shaft (117, 217), wherein the cardan shaft (116, 216) is rotationally coupled to the gear wheel (114, 214) and the output shaft (117, 217). In order to provide an improved fluid rotary machine, which especially allows more flexible and accurate control of rotational movements of components (114, 214, 116, 216, 117, 217) of the second movement chain are rotatable relative to the motor shaft (102, 202). Further, an encoder module (110, 210) includes a sensor arrangement configured to detect rotational movement of a component of the second movement chain, for example, of the cardan shaft (116, 216) and/or the output shaft (117, 217) is provided.
F04C 2/08 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
12.
A METHOD AND A CONTROL SYSTEM FOR CONTROLLING PARALLEL CONNECTED POWER CONVERTERS
A control system for controlling parallel connected power converters includes a data processing system (101-103) configured to form, for each power converter, a reactive power indicator (Ireact_n) based on data indicative of reactive power (Q_n) of the power converter, form an arithmetic average (Ireact_ave) of the reactive power indicators of the power converters, form, for each of the power converters, an unbalance indicator (edm_n) based on a difference (Ireact_n−Ireact_ave) between the reactive power indicator of the power converter and the arithmetic average, and control an alternating voltage amplitude reference (UAC,ref_n) of a converter stage of each of the power converters based on at least the unbalance indicator of the power converter. The use the arithmetic average reduces undesired voltage drift of the power converters when balancing the reactive powers of the power converters.
H02M 7/493 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
13.
HEAT EXCHANGER PROCESSING DEVICE AND METHOD, CONTROL METHOD FOR PROCESSING DEVICE, AND STORAGE MEDIUM
A heat exchanger processing device, comprising: a platform portion (410) for placing a plurality of flat tubes (130) of a heat exchanger; and a pushing member (420) comprising a plurality of push plates (421) arranged in the extension direction of the flat tubes (130), wherein the pushing member (420) is configured to perform periodic reciprocating pushing in the extension direction of the flat tubes (130); in the same pushing cycle, the pushing member (420) moves in a first direction, and the plurality of push plates (421) on the pushing member (420) can respectively push a plurality of fin groups to move in the first direction; and upon completion of pushing, the pushing member (420) retracts to the side opposite to the first direction, and the first direction is the direction from first ends of the flat tubes (130) to second ends of the flat tubes (130). By arranging a plurality of push plates on the pushing member, the processing efficiency is improved; the fin groups are pushed to preset installation positions, and the installation positions of the fin groups do not interfere. Also provided are a heat exchanger processing method, a control method for the processing device, and a storage medium.
B23P 19/04 - Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformationTools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
B23P 15/26 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers
14.
REFRIGERANT COMPRESSOR WITH A RESONATOR DOWNSTREAM OF A VOLUTE
A refrigerant compressor includes a volute and a resonator positioned near a discharge opening of the volute. The resonator includes a pipe including an inlet, and a plurality of plates positioned near the inlet. A first one of the plurality of plates includes a first opening, and a second one of the plurality of plates includes a second opening sized differently from the first opening.
A valve for a refrigeration application, in particular a shut-off and/or regulating valve including a bonnet connected to a housing with two fluid openings, a spindle fully penetrating the bonnet and reaching inside the housing, and a piston with an upper guiding and sealing portion with a seal section, a bottom closing portion for opening and closing a fluid passage between the two fluid openings, and a piston tube between the upper guiding and sealing portion and the bottom closing portion. The outer diameter of the piston tube is smaller than the outer diameters of the upper guiding and sealing portion and the bottom closing portion. The spindle engages the piston for moving it between a closed position and an open position of the valve. Additionally, a pressure balancing chamber is disclosed above and within the piston, said pressure balancing chamber being connected to the fluid passage via a pressure balancing passage, wherein the piston is supported by the spindle and the bonnet during at least some or all open positions of the valve, and wherein the piston is sealed against the bonnet at the upper guiding and sealing portion.
F16K 39/02 - Devices for relieving the pressure on the sealing faces for lift valves
F16K 1/04 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle with a cut-off member rigid with the spindle, e.g. main valves
F16K 27/02 - Construction of housingsUse of materials therefor of lift valves
F16K 41/04 - Spindle sealings with stuffing-box with at least one ring of rubber or like material between spindle and housing
F25B 41/24 - Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
16.
A METHOD FOR CONTROLLING A VAPOUR COMPRESSION SYSTEM AT LOW SUPERHEAT
A method for controlling a vapour compression system (1) includes a compressor unit (2), a heat rejecting heat exchanger (3), an expansion device (4) and an evaporator (5) arranged in a refrigerant path. A superheat value of refrigerant leaving the evaporator (5) is derived, and a quantity being representative for a variance of the derived superheat value is calculated. A reference superheat value is calculated, based on the calculated quantity and on a minimum acceptable superheat value, by adding the calculated quantity to the minimum acceptable superheat value. The expansion device (4) is operated in accordance with the calculated reference superheat value, and in order to obtain a superheat of refrigerant leaving the evaporator (5) which is equal to the reference superheat value.
A plate heat exchanger includes a plurality of heat transfer plates, and heat exchange spaces formed between adjacent heat transfer plates of the plurality of heat transfer plates, the heat exchange spaces including a plurality of first heat exchange spaces for a first heat transfer medium, a plurality of second heat exchange spaces for a second heat transfer medium, and a plurality of third heat exchange spaces for a third heat transfer medium, and each of the plurality of first heat exchange spaces and the plurality of second heat exchange spaces being adjacent to one or two of the plurality of third heat exchange spaces in an overlapping direction of the heat transfer plates, wherein the number of the plurality of first heat exchange spaces is different from the number of the plurality of second heat exchange spaces. By using the plate heat exchanger according to the embodiments of the present invention, the heat transfer area of each circuit can be optimized, so as to improve the heat exchange efficiency.
F28D 9/00 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
An acoustic hood (2) comprises a first semi-shell (3), a second semi- shell (4) and a bottom part (5) forming an enclosure configured to surround a compressor; an inlet piping opening (7); and an outlet piping opening (8). Each of the first and second semi-shells (3, 4) is formed from a multi-layer foam material comprising a first inner layer (9a, 9b) which is a sound absorbing and insulating layer and a second outer layer (11a, lib) which is a sound absorbing and insulating layer. The first semi-shell (3) is connected with the second semi-shell (4) through at least one stepped lap joint formed by the first inner layers (9a, 9b) and the second outer layers (11a, lib) of the first and second semi-shells (3, 4).
F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
B29B 17/00 - Recovery of plastics or other constituents of waste material containing plastics
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
B29C 44/44 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in the form of expandable particles or beads
A refrigerant compressor includes a shaft rotatable about an axis. A first radial stage includes a first radial impeller coupled to the shaft. An axial stage is fluidly downstream of the first radial stage includes an axial stage impeller coupled to the shaft. A second radial stage fluidly downstream of the axial stage includes a second radial impeller coupled to the shaft.
F04D 17/02 - Radial-flow pumps specially adapted for elastic fluids, e.g. centrifugal pumpsHelico-centrifugal pumps specially adapted for elastic fluids having non-centrifugal stages, e.g. centripetal
targetESS_1, …,ESS_Nref_offset_ntargetESS_nDC_refDCDC) of the second direct voltage terminal, and the correction value of the direct voltage converter to drive the direct voltages of the first direct voltage terminals of the direct voltage converters to a same value.
A refrigeration application, in particular a shut-off and/or regulating valve includes a bonnet connected to a housing with two fluid openings, a spindle and a piston for opening and closing a fluid passage between the two fluid openings. The spindle engages the piston for moving it between a closed position and an open position of the valve. A bottom closing portion of the piston includes an outer flange and an inner flange between which a sealing element is provided, wherein the two flanges are connected to each other by means of at least one screw and wherein a non-circular connector geometry for connecting a tool is provided at the bottom side of the outer flange.
A sensor for detecting a pressure difference of a fluid is disclosed, including: a housing having a first cavity, wherein the longitudinal axis of the first cavity defines a first end and a second end of the housing, and the first cavity communicates with the outside of the housing at the first end via a first fluid through hole and communicates with the outside of the housing at a position spaced apart from the first end via a second fluid through hole, and the housing is provided with an end element at the first end; a piston held inside the first cavity and can move between a first position and a second position along the longitudinal axis, wherein a flange is arranged on the circumferential outer side of the piston, and the flange is closer to the first end than the second fluid through hole; a spring positioned in the first cavity and can apply a force to the piston along the longitudinal axis, the sensor also has a piston position sensing assembly for sensing the relative position between the piston and the housing, and a circumferential gap through which fluid can flow is formed between the circumferential outer surface of the flange and the inner wall of the first cavity. The sensor has high sensitivity to fluid pressure difference. The invention also relates to a filter dryer.
G01L 7/16 - Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of pistons
G01L 9/00 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elementsTransmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
G01L 13/02 - Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements
E03B 7/07 - Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
23.
HEAT EXCHANGER, AIR CONDITIONING SYSTEM AND HEAT EXCHANGE SYSTEM
A heat exchanger, an air conditioning system with the heat exchanger, and a heat exchange system with the heat exchanger. The heat exchanger includes a first heat exchanger core and a second heat exchanger core arranged side by side. The first heat exchanger core includes a first main segment, a first connection segment connected with the first main segment, and a first header. The first main segment includes a plurality of first heat exchange tubes arranged in a second direction perpendicular to the first direction. The second heat exchanger core includes a second main segment, a second connection segment connected with the second main segment, and a second header. The second main segment includes a plurality of second heat exchange tubes arranged in the second direction. The first main segment includes a first wind resistance region and a second wind resistance region arranged in a third direction perpendicular to the first and second directions, the second wind resistance region being adjacent to the first header, and a wind resistance of the second wind resistance region is smaller than that of the first wind resistance region, thereby improving the performance of the heat exchanger, the air conditioning system, and the heat exchange system.
F28D 1/02 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid
F28F 1/12 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
A refrigerant compressor includes an impeller rotatable about an axis and a volute. A diffuser is axially between a first wall and a second wall, and radially between an outlet of the impeller and the volute. A diffuser plate provides the second wall, which includes a plurality of quarter wave tubes, each of the plurality of quarter wave tubes including a cylindrical blind hole extending radially from the second wall.
A gas sensing leak mitigation unit for a gas system includes a gas sensing element, at least one onboard relay, and at least one microcontroller. The at least one microcontroller is configured to receive a signal from the gas sensing element and to determine if the signal from the gas sensing element is above a first predetermined threshold level. The at least one microcontroller is further configured to control the energizing and de-energizing of the onboard relays. A first onboard relay may be configured, when energized, to transmit power to a compressor of the gas system and, when de-energized, to break power to the compressor. A second onboard relay may be configured, when de-energized, to transmit power to a fan control. The gas sensing element, the at least one onboard relay and the at least one microcontroller may all be arranged within a common housing.
A rotor tube assembly for a fluid valve actuator including a bearing housing assembly, a lead screw with a bottom shoulder, a rotor sleeve assembly with a non-block assembly, a bushing and a rotor tube. The lead screw is provided at least partially inside the bearing housing assembly, the rotor sleeve assembly, the bushing and the rotor tube. The bottom shoulder abuts the bearing housing assembly and the lead screw includes a bottom threaded portion on one side of the bottom shoulder and on the other side of the bottom shoulder and in this given order a bottom coupling portion for coupling the bearing housing assembly to the lead screw, a central coupling portion for coupling the rotor sleeve assembly to the lead screw, and an upper coupling portion for coupling the bushing to the lead screw. The bottom shoulder has a larger outer diameter than the coupling portions, the bottom coupling portion has a larger outer diameter than or the same diameter as the central coupling portion and the upper coupling portion has a smaller diameter than or the same diameter as the bottom coupling portion and the central coupling portion. The disclosure is also directed at a method for assembling a rotor tube assembly.
This disclosure relates to a refrigerant compressor, including: an impeller including a blade having a trailing edge having a wavy profile. The trailing edge is defined by one or more chevrons extending outward from a base portion.
Machines and machine tools namely for construction machines, Agricultural machines, Materials handling machines, Forestry machines, Road building machines, Presses for industrial use [machines]; motors and engines (except for land vehicles) namely for construction machines, Agricultural machines, Materials handling machines, Forestry machines, Road building machines, Presses for industrial use [machines]; machine coupling and transmission components (except for land vehicles); Pumps [parts of machines, engines or motors].
31.
A METHOD FOR GENERATING EARLY TEMPERATURE WARNING IN A VAPOUR COMPRESSION SYSTEM
A method for operating a vapour compression system (1) is disclosed. A cut-in temperature, a high temperature alarm limit and a high temperature alarm delay time are set. A maximum acceptable relative decay value is derived, based on the high temperature alarm limit and the high temperature alarm delay time. The vapour compression system (1) is operated while monitoring a temperature inside a refrigerated volume and continuously deriving a weighted mean temperature prevailing inside the refrigerated volume, during a moving time window of a predefined length. In the case that the weighted mean temperature inside the refrigerated volume exceeds the cut-in temperature, a timer is started, and a delay time is derived, based on the weighted mean temperature and the maximum acceptable relative decay value. A warning is generated when the timer reaches the derived delay time.
A scroll compressor comprising a compressor casing; a compression unit including a fixed scroll and an orbiting scroll defining a compression volume; an oil sump; a drive shaft including a driving portion coupled with the orbiting scroll; a variable-speed electric motor configured to rotatably drive the drive shaft; an oil injection system including an oil feed channel fluidly connected to the oil sump and extending over the entire length of the drive shaft, and oil injection means provided on the orbiting scroll and configured to deliver oil from the oil feed channel to the compression volume; and an oil flow regulating device configured to regulate an oil flow from the oil feed channel to the oil injection means.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 28/08 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the rotational speed
33.
A SCROLL COMPRESSOR HAVING A MIDDLE SHELL WITH A BARREL-SHAPED SECTION
The scroll compressor (2) includes a compressor casing (3) including an upper shell (6), a middle shell (7) and a bottom shell (8); a compression unit (11) mounted inside the compressor casing (3); a drive shaft (14) disposed inside the compressor casing (3); an electric motor (15) disposed inside the compressor casing (3) in the middle shell (7) and configured to rotatably drive the drive shaft (14); an oil sump (9) disposed inside the compressor casing (3) in the bottom shell (8); and a baseplate (16) fixed to the bottom shell (8). The middle shell (7) includes at least one barrel shaped section (B) extending in an axial direction (Z), the at least one barrel-shaped section (B) having a longitudinal profile which is arcuate and which has a radius of curvature.
F01C 21/10 - Outer members for co-operation with rotary pistonsCasings
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
p1vp1p2p2), and which is axially coupled to the first piston part (9). The second piston part (10) is moveable together with the first piston part (9) between an open position and a closed position. Further, the second piston part (10) is tiltable with respect to the first piston part (9).
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
F16K 31/36 - Operating meansReleasing devices actuated by fluid in which fluid from the conduit is constantly supplied to the fluid motor
F16K 31/50 - Mechanical actuating means with screw-spindle
F16K 1/12 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with streamlined valve member around which the fluid flows when the valve is opened
35.
HEAT EXCHANGER AND HEAT EXCHANGE SYSTEM COMPRISING SAME
Disclosed are a heat exchanger (100) and a heat exchange system (200) comprising same. The heat exchanger (100) comprises a heat exchanger unit. The heat exchanger unit comprises at least one first heat exchanger unit (1). The first heat exchanger unit (1) comprises: two rows of first heat exchanger core bodies (10) arranged side by side in a first direction, wherein each row of first heat exchanger core bodies (10) comprise first heat exchange tubes (11) arranged in a second direction perpendicular to the first direction; two first flow collecting tubes (13) respectively connected to the first heat exchange tubes (11) of the two rows of first heat exchanger core bodies (10) in a first edge area (12) of the two rows of first heat exchanger core bodies (10) in a third direction perpendicular to the first direction and the second direction; and a plurality of first connectors (15) respectively extending from the two first flow collecting tubes (13) toward two sides of the two rows of first heat exchanger core bodies (10) in the first direction. By using the heat exchanger (100) of the present disclosure, for example, space can be saved.
F28D 7/00 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
36.
HEAT EXCHANGER MODULE, HEAT EXCHANGER, AND AIR CONDITIONING SYSTEM
A heat exchanger module, a heat exchanger provided with said heat exchanger module, and an air conditioning system provided with said heat exchanger module or said heat exchanger. The heat exchanger module (100) comprises: heat exchange tubes (1); main headers (2) which are connected to and in fluid communication with end portions of the heat exchange tubes (1); and auxiliary headers (3), the auxiliary headers (3) being connected to and in fluid communication with the main headers (2), and the lengths of the auxiliary headers (3) being less than the lengths of the main headers (2). The heat exchanger can be formed by means of connecting a plurality of heat exchanger modules by using the auxiliary headers.
A heat exchanger, a bent heat exchanger formed by bending the heat exchanger, and an air conditioning system having the heat exchanger or the bent heat exchanger. The heat exchanger includes: a plurality of rows of heat exchange tubes arranged in a first direction; and a plurality of fins arranged in a second direction perpendicular to the first direction. Each of the plurality of fins includes a fin body and a plurality of heat exchange tube slots formed in the fin body, one or more heat exchange tubes of each row of heat exchange tubes of the plurality of rows of heat exchange tubes being inserted into one heat exchange tube slot of the plurality of heat exchange tube slots; and a length of at least one heat exchange tube slot of the plurality of heat exchange tube slots of at least one fin of the plurality of fins in a third direction perpendicular to the first direction and the second direction is greater than a heat exchange tube size of the row of heat exchange tubes inserted into the at least one heat exchange tube slot in the third direction to form a gap for passage of water in the at least one heat exchange tube slot, thereby improving the performance of the heat exchanger, bent heat exchanger and air conditioning system.
F28F 1/32 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
The invention relates to a pipe connecting arrangement (1, 30, 36), in particular for connecting thin-walled metal tubes (4), comprising: a tube (4) with a reshaped end portion (3, 31), where the reshaped end portion (3, 31) shows a truncated cone like shape (6) with a decreasing diameter (9) towards the connection end, and a tube end cone angle (α), forming an outer circumferential sealing surface, and a connecting member (2) with a receiving recess (13) with a truncated cone like shape with an increasing diameter towards the connection end, and a receiving recess cone angle (β), forming an inner circumferential sealing surface. The tube end cone angle (α) is smaller than the receiving recess cone angle (β) by at least 1.5°, preferably by at least 2°, more preferably by at least 3°, even more preferably by at least 4° prior to fixation of the reshaped end portion (3, 31) of the tube (4) within the receiving recess (13) of the connecting device (2), at least in the region of the sealing surfaces.
F16L 19/028 - Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
39.
TUBE COUPLING WITH CLAMPING EFFECT FOR THE TUBE AND METHOD OF MOUNTING A TUBE COUPLING
The invention relates to a pipe connecting arrangement (1, 30, 36), in particular for connecting thin-walled metal tubes (4), comprising: a tube (4) with a reshaped end portion (3, 31), where the reshaped end portion (3, 31) shows a truncated cone like shape (6) with a decreasing diameter (9) towards the connection end, and a tube end cone angle (α), forming an outer circumferential sealing surface; a connecting member (2) with a receiving recess (13) with a truncated cone like shape with an increasing diameter towards the connection end, and a receiving recess cone angle (β), forming an inner circumferential sealing surface; and a support ring (15, 26, 33) that is arranged circumferentially around at least a part of the tube end (3, 31) of the tube (4). At least a part (24) of the support ring (15, 26, 33) rests against the receiving recess (13) of the connecting member (2).
F16L 19/028 - Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
40.
PREASSEMBLED TENSIONING ARRANGEMENT FOR A PIPE CONNECTING ARRANGEMENT AND PIPE CONNECTING ARRANGEMENT COMPRISING A PREASSEMBLED TENSIONING ARRANGEMENT
F16L 19/028 - Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
A heat exchanger and an air conditioning system having the same. The heat exchanger includes at least one of a first heat exchanger unit and a second heat exchanger unit, and the heat exchanger has a V-shaped or inverted V-shaped shape. The first heat exchanger unit includes a first heat exchanger core segment and a second heat exchanger core segment, which are arranged side by side and each have heat exchange tube(s) and fin(s). A size of the first heat exchanger core segment of the first heat exchanger unit is larger than or equal to that of the second heat exchanger core segment of the first heat exchanger unit. The second heat exchanger unit includes a first heat exchanger core segment, a second heat exchanger core segment and a third heat exchanger core segment each having heat exchange tube(s) and fin(s), the first heat exchanger core segment and the third heat exchanger core segment being arranged side by side with the second heat exchanger core segment in a first direction of the second heat exchanger unit, respectively. A size of the first heat exchanger core segment and a size of the third heat exchanger core segment of the second heat exchanger unit are smaller than or equal to that of the second heat exchanger core segment of the second heat exchanger unit, respectively. With the heat exchanger according to the present invention, the heat exchange performance can be improved.
F28D 1/04 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits
F28D 1/02 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid
F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
A heat exchanger and an air conditioning system having the same. The heat exchanger includes a plurality of fins and a row of heat transfer tubes. The fin includes a fin body and a plurality of columns of heat exchange tube slots formed in the fin body. The column of heat exchange tube slots includes a plurality of heat exchange tube slots arranged in a first direction, the plurality of fins being arranged in a second direction perpendicular to the first direction, and the plurality of columns of heat exchange tube slots being arranged in a third direction perpendicular to the first direction and the second direction. The row of heat exchange tubes is provided in the heat exchange tube slot of the column of heat exchange tube slots, and the row of heat exchange tubes includes one heat exchange tube or a plurality of heat exchange tubes. A length of at least one heat exchange tube slot in the third direction is greater than a heat exchange tube size of the row of heat exchange tubes inserted in the at least one heat exchange tube slot in the third direction. Therefore, the performance of the heat exchanger and the air conditioning system can be improved.
F28F 1/32 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
F28F 9/26 - Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
A heat exchanger and an air conditioning system having the same. The heat exchanger includes a plurality of fins and a row of heat transfer tubes. The fin includes a fin body and a plurality of columns of heat exchange tube slots formed in the fin body. The column of heat exchange tube slots includes a plurality of heat exchange tube slots arranged in a first direction, the plurality of fins being arranged in a second direction perpendicular to the first direction, and the plurality of columns of heat exchange tube slots being arranged in a third direction perpendicular to the first direction and the second direction. The row of heat exchange tubes is provided in the heat exchange tube slot of the column of heat exchange tube slots, and the row of heat exchange tubes includes one heat exchange tube or a plurality of heat exchange tubes. A length of at least one heat exchange tube slot in the third direction is greater than a heat exchange tube size of the row of heat exchange tubes inserted in the at least one heat exchange tube slot in the third direction. Therefore, the performance of the heat exchanger and the air conditioning system can be improved.
F28F 1/34 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
F28D 1/04 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits
F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
A hydrostatic radial piston unit of the cam-lobe type of construction having a non-rotary, stationary shaft defining a rotational axis of the hydrostatic radial piston unit. A non-rotary, stationary casing houses the shaft in a torque proof connection. A rotary casing is provided which is rotary around the rotational axis. A pair of roller bearings supports the rotary casing in a rotatable manner against the stationary casing, wherein the pair of roller bearings is arranged in an axial overlapping area in which the stationary casing and the rotary casing overlap.
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/0448 - Sealing means, e.g. for shafts or housings
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F04B 1/0476 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders with two or more serially arranged radial piston-cylinder units located side-by-side
45.
A DUAL-ACTIVE-BRIDGE CONVERTER AND A METHOD FOR CONTROLLING THE SAME
A dual-active-bridge converter comprises a first H-bridge (101) for producing first voltage pulses which are alternately positive and negative, a second H-bridge (102) for producing second voltage pulses which are alternately positive and negative, and a transformer (103) comprising a first winding (104) receiving the first voltage pulses and a second winding (105) receiving the second voltage pulses A controller (106) of the converter changes temporal widths (T1, T2) of the first and second voltage pulses and a phase-shift between the first and second voltage pulses when there is a need to change a distribution of power losses between a core structure of the transformer and power electronic switches of the H-bridges. Thus, the power loss distribution can be optimized in different operational modes, and the power loss distribution can be changed in situations where a part of the converter is at a risk of overheating.
H02M 3/155 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
46.
FLOW CONTROL VALVE, FOR EXAMPLE EXPANSION VALVE FOR A REFRIGERATION SYSTEM
Flow control valve of pressure-balanced piston type with mechanical fail-save function, equalization passage, and equalization pilot valve The present invention relates to a flow control valve (1; 100), for example an expansion valve for a refrigeration system, of pressure-balanced piston type and with a mechanical fail-safe functionality The valve (1; 100) comprises a valve body (10), a piston (60), and a valve drive (30) for controlling fluid flow from a fluid inlet (11) to a fluid outlet (15) through a valve seat (13) by displacing the piston (60) with regard to the valve seat (13). The piston (60) protrudes with a drive-side end portion (61) into a balancing chamber (20) and includes an equalization passage (70) with a first flow resistance. In order to provide the valve (1; 100) cost-efficiently with a reliable fail-safe functionality, it comprises a fluid bleed (25) from a inlet pressure chamber (12) and/or the fluid inlet (11) to the balancing chamber (20), wherein the fluid bleed (25) is separate from the equalization passage (70) and has a second flow resistance that is larger than the first flow resistance, and an equalization pilot valve (80) for opening and closing the equalization passage (70).
F25B 41/325 - Expansion valves having two or more valve members
F16K 1/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
F16K 39/02 - Devices for relieving the pressure on the sealing faces for lift valves
F25B 41/35 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
Embodiments of the present application disclose a heat exchanger and an air-conditioning system. The heat exchanger includes heat exchange tubes. The heat exchange tubes include first heat exchange tubes configured to form a first circuit, and second heat exchange tubes configured to form a second circuit. With the heat exchanger according to the embodiments of the present application, if one of two circuits of a two-circuit air-conditioning system is turned off, a heat exchange efficiency of the heat exchanger can be improved.
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
A cassette (1) for an electrolyzer includes two cooling plates (2) and two electrolyte plates (3a, 3c), in the form of an anodic electrolyte plate (3a) and a cathodic electrolyte plate (3c). The two cooling plates (2) contact each other at one surface forming a cooling flow path (5) between them. Each of the cooling plates (2) contacts an electrolyte plate (3a, 3c) at the other, opposite surface and forming an anodic electrolyte flow path (6a) between one of the cooling plates (2) and the anodic electrolyte plate (3a) and a cathodic electrolyte flow path (6c) between the other cooling plate (2) and the cathodic electrolyte plate (3c). The electrolyte plates (3a, 3c) and cooling plates (2) are each formed with cooling openings (7 in, 7out) for a cooling fluid to pass the plate (2, 3a, 3c), at least one anodic electrolyte fluid inlet (8 in) for an anodic electrolytic fluid to pass the plate (2, 3a, 3c), at least one cathodic electrolyte fluid inlet (9 in) for a cathodic electrolyte fluid to pass the plate (2, 3a, 3c), at least one anodic gas outlet (8out) for an anodic gas to pass the plate (2, 3a, 3c), and at least one cathodic gas outlet (9out) for a cathodic gas to pass the plate (2, 3a, 3c).
An automatic tool tilt command system for a boom moveably connected with one end to a chassis of a working machine, wherein a tiltable tool is attachable to the other end. A first electronic control valve for controlling a fluid flow to and from a lift cylinder for moving the boom and a second electronic control valve for controlling a fluid flow to and from a tilt cylinder for tilting the tool. A control unit receives signals to move the boom and transmits signals to the first electronic control valve in order to move the boom. In parallel the control unit transmits signals to the second electronic control valve which are based on a predetermined fluid flow ratio defined by the fluid flow for the boom movement and the fluid flow for tool levelling, so that the tool maintains its inclination angle with respect to the horizontal.
The present disclosure pertains to a valve for a refrigeration application, in particular a shut-off and/or regulating valve. The valve includes a bonnet connected to a housing with two fluid openings, a spindle fully penetrating the bonnet and reaching inside the housing, and a piston with an upper guiding and sealing portion with a seal section, a bottom closing portion for opening and closing a fluid passage between the two fluid openings, and a piston tube between the upper guiding and sealing portion and the bottom closing portion. The spindle engages the piston for moving it between a closed position and an open position of the valve and a pressure balancing chamber is provided above and within the piston. The piston is sealed against the bonnet at the upper guiding and sealing portion. An inner surface of the bonnet guiding the upper guiding and sealing portion and/or an outer surface of the piston has a smaller diameter at a bottom portion than at an upper portion.
The present disclosure relates generally to a coupling assembly made up of a male fluid coupler and a female fluid coupler for a fluid line. The male and female fluid couplers are closed to flow in the uncoupled state and are open to flow when coupled. The male fluid coupler can include an alignment compensation arrangement that can adjust for any initial misalignment between the male and female fluid couplers. The alignment compensation arrangement can function as a universal connection joint to allow the male fluid coupler to universally pivot and move radially.
F16L 37/52 - Universal joints, i.e. with a mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
F16L 29/04 - Joints with fluid cut-off means with a cut-off device in each of the two pipe ends, the cut-off devices being automatically opened when the coupling is applied
F16L 37/34 - Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied at least one of the lift valves being of the sleeve type, i.e. a sleeve being telescoped over an inner cylindrical wall
F16L 37/35 - Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied at least one of the valves having an axial bore communicating with lateral apertures
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
54.
METHOD OF MONITORING A ROTATING MACHINE CONFIGURED FOR ENERGY TRANSFER HAVING A PLURALITY OF SUBSYSTEMS
A method of monitoring a rotating machine configured for energy transfer having a plurality of subsystems, each subsystem includes one cylinder. In the method a measurement signal of a vibration of the rotating machine is obtained and the vibration measurement signal (2) is sampled into a plurality of vibration subsignals (21, 22, 23, 24, 25), each vibration subsignal (21, 22, 23, 24, 25) corresponding to one full revolution of the rotating machine. A reference vibration subsignal (20) is determined based on an average of the plurality of vibration subsignals (21, 22, 23, 24, 25). The reference vibration subsignal (20) is sampled into a plurality of signal snippets (201, 202, 203, 204, 205), each signal snippet (201, 202, 203, 204, 205) assigned to one subsystem of the rotating machine. A cross-correlation analysis of the plurality of signal snippets (201, 202, 203, 204, 205) is performed for identifying a potential fault state of the rotating machine. The disclosure further discloses a rotating machine configured for energy transfer having a plurality of subsystems, each subsystem including one cylinder, is provided, wherein the rotating machine further includes a control unit adapted to perform a method according the disclosure.
A plate heat exchanger including a plurality of heat transfer plates stacked in a first direction; first and second fluid channels formed between adjacent heat transfer plates and fluidly isolated from each other, and fluid barrier structure, which forms an isolation area in the first fluid channel so that the isolation area of the first fluid channel is fluidly isolated from the remaining areas of the first fluid channel. By adopting the fluid barrier structure, the performance of the plate heat exchanger is improved.
F28F 3/08 - Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
F28D 9/00 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
A device (10) for controlling a system (30) for heating and cooling including at least one valve actuator (12) for a valve (14) of a bypass line (16) of the system (30), and a flow measuring device (20) for a return line (18) of the system (30), the return line (18) leading a combined flow from the bypass line (16) and a heating or cooling device return line (32) from at least one heating or cooling device (22) to at least one thermal energy source (24), the flow measuring device (20) being configured to determine and provide at least one actual flow value of the combined flow, wherein the valve actuator (12) is configured to receive the actual flow value and to control the valve (14) based on the actual flow value. The disclosure provides a device (30) to control a system for heating or cooling that is easier to handle and has reduced costs.
F24D 19/10 - Arrangement or mounting of control or safety devices
F24F 11/84 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
G05D 7/06 - Control of flow characterised by the use of electric means
57.
A COMPRESSOR SCROLL PROVIDED WITH AN OIL SUMP FAIRING
A scroll compressor including a hermetic casing provided with a suction inlet; a compression unit; a drive shaft configured to drive an orbiting scroll of the compression unit in an orbital movement; an electric motor coupled to the drive shaft; an oil sump; a refrigerant guiding device configured to force a main part of a refrigerant, entering the scroll compressor through the suction inlet, to flow downwardly through the electric motor, before reaching the compression unit; and an oil sump fairing arranged between a lower end of the electric motor and a free surface of oil stored in the oil sump, the oil sump fairing being configured to prevent a refrigerant flow, emerging from the lower end of the electric motor, to directly impact the free surface of the oil stored in the oil sump.
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
The present disclosure provides a plate heat exchanger comprising: a plurality of heat transfer plates stacked in a first direction, wherein the heat transfer plate is configured to have a heat transfer plate edge on its side in a second direction perpendicular to the first direction; first and second fluid channels formed between adjacent heat transfer plates and fluidly isolated from each other; two first ports formed in the heat transfer plate on the side and an opposite other side of the heat transfer plate in the second direction, respectively, and fluidly communicated to the first fluid channel; and a hole formed in the heat transfer plate between one of the two first ports located on the side and the heat transfer plate edge in a second direction, which is fluidly communicated to the first fluid channel and fluidly isolated from the second fluid channel. By disposing the hole in a bottom area of the plate heat exchanger, excessive water remained in the plate heat exchanger when it is not in use is avoided, so as to prevent freezing in the plate heat exchanger.
F28D 9/00 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
F28F 3/08 - Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
59.
SCROLL COMPRESSOR AND METHOD FOR CONTROLLING SCROLL COMPRESSOR
A scroll compressor (2) includes a sealed housing (3); a compression unit (11), having a fixed scroll (12) and an orbiting scroll (13); a drive shaft (18) configured to drive the orbiting scroll (13) to move orbitally, the drive shaft (18) being capable of rotating about an axis of rotation; a synchronous reluctance motor (15) configured to drive the drive shaft (18) to rotate about the axis of rotation, the synchronous reluctance motor (15) comprising a rotor (16) coupled to the drive shaft (18) and a stator (17) disposed around the rotor (16), and the rotor (16) including a ferrite permanent magnet (23); a compressor control apparatus (31) configured to control the scroll compressor (2) to operate; a lubricating oil tank (27), formed in a bottom portion of the sealed housing (3); a heating apparatus configured to heat lubricating oil stored in the lubricating oil tank (27); and an oil temperature sensor (28) disposed in the lubricating oil tank (27).
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
F04C 23/02 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors
An electrolyte plate (3a, 3c) for an electrolyzer cassette (1), the electrolyzer cassette (1) includes at least one cooling plate (2). The electrolyte plate (3a, 3c) is formed with at least one opening (7in, 7out) for a cooling fluid to pass the electrolyte plate (3a, 3c), at least one electrolyte fluid inlet (8in, 9in) for an electrolytic fluid to pass the electrolyte plate (3a, 3c), and at least one gas outlet (8out, 9out) for a gas to pass the electrolyte plate (3a, 3c). A porous area is formed between the at least one electrolyte fluid inlet (8in, 9in) and the at least one gas outlet (8out, 9out), the porous area being formed with openings (11) adapted to pass gas across the electrolyte plate (3a, 3c) between a membrane (4) to be positioned at the one side of the electrolyte plate (3a, 3c), and an electrolyte fluid path (6a, 6c) positioned at the other side of the electrolyte plate (3a, 3c).
A cassette (1) for an electrolyzer includes two cooling plates (2) contacting each other and forming a cooling flow path (5) between them, and two electrolyte plates (3a, 3c), each electrolyte plate (3a, 3c) contacting one of the cooling plates (2). At least a section of the cooling flow path (5) is split into cooling cells (17) each connecting to a cooling cell supply channel (20) via a cooling cell inlet (21) and to a cooling cell return channel (22) via a cooling cell outlet (23), forming a cooling flow path through each cooling cell (17) from the cooling cell inlet (21) to the cooling cell outlet (23). The cooling cells (17) are distributed across the cooling plates (2) along two directions.
A plate heat exchanger includes a plurality of heat transfer plates, the plurality of heat transfer plates including: a first heat transfer plate, including protrusions protruding upward, the protrusions having a top; and a second heat transfer plate stacked on the first heat transfer plate, the second heat transfer plate includes recesses recessed downward, the recesses having a bottom. The tops of the protrusions have a concave portion which is sunken downward, and at least part of the bottoms of the recesses of the second heat transfer plate is disposed in the concave portion of the tops of the protrusions of the first heat transfer plate. It is thus possible to improve the weld quality of the heat exchanger.
F28D 9/00 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
09 - Scientific and electric apparatus and instruments
Goods & Services
Energy control devices; electric current control devices; frequency converters; software for the controlling and programming of the aforementioned goods.
A cassette (1) for an electrolyzer includes two cooling plates (2) and two electrolyte plates (3a, 3c), where the two cooling plates (2) contact each other (18) at one surface and form a cooling flow path (5) between them, and each cooling plate (2) contacts one of the electrolyte plates (3a, 3c) at the other, opposite surface and form electrolyte flow paths (6a, 6c) between the cooling plates (2) and the respective electrolyte plates (3a, 3c). The cassette (1) further includes at least one contact column (19) establishing a connection between at least one of the cooling plates (2) and at least one of the electrolyte plates (3a, 3c).
A cassette (1) for an electrolyzer includes a cooling plate (2) and an electrolyte plate (3a, 3c) defining an electrolyte flow path (6a, 6c) between them. The electrolyte plate (3a, 3c) is formed with at least one electrolyte fluid inlet (8in, 9in) at a first end section and at least one gas outlet (8out, 9out) at a second, opposite end section and defines an active area between the first end section and the second end section. An inner gas barrier (26) is formed between the second end section with the at least one gas outlet (8out, 9out) and the active area, and the inner gas barrier (26) is formed with a drain (27).
A plate heat exchanger includes a plurality of heat transfer plates; a first fluid channel and a second fluid channel formed between adjacent heat transfer plates and fluidly isolated from each other; an upstream outlet port and a downstream inlet port formed in each of the heat transfer plates; and a fluid communication device. The first fluid channel includes a fluid channel upstream portion and a fluid channel downstream portion that are separated from each other. The upstream outlet port is communicated to the fluid channel upstream portion of the first fluid channel, while the downstream inlet port is communicated to the fluid channel downstream portion of the first fluid channel. The upstream outlet port and downstream inlet port are fluidly communicated with each other through the fluid communication device. By adopting the plate heat exchanger according to the present disclosure, a number of parts may be reduced.
F28D 9/00 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
A membrane assembly for an electrolyzer cassette (1) includes a membrane (4) and a gasket arrangement including a first gasket part (13) and a second gasket part (14). The membrane (4) is arranged between the first gasket part (13) and the second gasket part (14), and the gasket arrangement includes a locking arrangement (15, 16) for fixating the first gasket part (13), the membrane (4) and the second gasket part (14) relative to each other. The disclosure further discloses an electrolyzer cassette (1) including such a membrane assembly and a method for assembling such a membrane assembly.
The disclosure relates to a multilayered hose (1, 10) with a plurality of coaxially arranged sheaths (2, 3, 4, 5, 6, 7, 8, 12, 13). The multilayered hose (1, 10) includes at least a force bearing sheath (2, 6), a diffusion reducing sheath (4), and an adhesion promoting layer (3, 5) that is arranged between the force bearing sheath (2, 6) and the diffusion reducing sheath (4) and that increases the bonding force between said force bearing sheath (2, 6) and said diffusion reducing sheath (4). The adhesion promoting layer (3, 5) includes a mixture of: 65 to 85 parts of acrylonitrile butadiene rubber, 15 to 35 parts of styrene butadiene rubber, 75 to 125 parts of carbon black N990, 30 to 100 parts of calcium magnesium carbonate, 5 to 15 parts of zinc oxide, 5 to 20 parts of magnesium-aluminium hydroxycarbonate, 25 to 125 parts of resin package blend, 2 to 10 parts of N-(1.3-dimethylbutyl)-N′-phenyl-p-phenylendiamine, 5 to 15 parts of triallyl cyanurate, and 0.5 to 5 parts of a vulcanizing agent.
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 25/04 - Layered products essentially comprising natural or synthetic rubber comprising rubber as the main or only constituent of a layer, next to another layer of a specific substance
B32B 25/08 - Layered products essentially comprising natural or synthetic rubber comprising rubber as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B32B 25/16 - Layered products essentially comprising natural or synthetic rubber comprising polydienes or poly-halodienes
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
The disclosure relates to tube or hose (1, 10) including a plurality of coaxially arranged sheaths (2, 3, 4, 5, 6, 7, 8, 12, 13) that are bonded together. The multilayered tube or hose (1, 10) includes at least: a force bearing sheath (2), an abrasion resistant sheath (12), and an adhesion promoting layer (13) that is arranged between the force bearing sheath (2) and the abrasion resistant sheath (12) and that increases the bonding force between said force bearing sheath (2) and said abrasion resistant sheath (12). The adhesion promoting layer (13) includes a mixture of 55 to 85 parts of acrylonitrile butadiene rubber, 5 to 25 parts of styrene butadiene rubber, 5 to 25 parts of ethylene propylene diene monomer, 75 to 125 parts of carbon black N990, 30 to 90 parts of calcium magnesium carbonate, 5 to 15 parts of zinc oxide, 5 to 25 parts of magnesium-aluminium hydroxycarbonate, 20 to 95 parts of resin package blend, 2 to 10 parts of N-(1.3-dimethylbutyl)-N′-phenyl-p-phenylendiamine, 5 to 15 parts of triallyl cyanurate, and 0.5 to 5 parts of a vulcanizing agent.
B32B 25/08 - Layered products essentially comprising natural or synthetic rubber comprising rubber as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
B32B 25/18 - Layered products essentially comprising natural or synthetic rubber comprising butyl or halobutyl rubber
B32B 27/18 - Layered products essentially comprising synthetic resin characterised by the use of special additives
A cassette (1) for an electrolyzer includes a cooling plate (2) and an electrolyte plate (3a, 3c) defining an electrolyte flow path (6a, 6c) between them. The electrolyte plate (3a, 3c) is formed with at least one electrolyte fluid inlet (8in, 9in) at a first end section and at least one gas outlet (8out, 9out) at a second, opposite end section and defines an active area between the first end section and the second end section. At least one of the at least one gas outlet (8out, 9out) is partly surrounded by an outlet blockade (28) with an opening (29) formed therein, allowing gas only to leave the second end section towards the at least one gas outlet (8out, 9out) via the opening (29) in the outlet blockade (28).
C25B 9/23 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms comprising ion-exchange membranes in or on which electrode material is embedded
C25B 11/03 - ElectrodesManufacture thereof not otherwise provided for characterised by shape or form perforated or foraminous
C25B 15/08 - Supplying or removing reactants or electrolytesRegeneration of electrolytes
71.
HYDRAULIC CIRCUIT FOR OPENING AND CLOSING MOULD OF INJECTION MOULDING MACHINE, AND INJECTION MOULDING MACHINE SYSTEM
A hydraulic circuit for opening and closing a mould of an injection moulding machine, and an injection moulding machine system includes an operating oil cylinder and a proportional valve; by means of adjusting the proportional valve to different operating states, the operating oil cylinder can be controlled to execute different actions, so as to control mould opening, mould closing and mould differential closing of the injection moulding machine. By means of a differential proportional valve with a flow regeneration function, the present invention can effectively increase control precision in a mould opening and closing process, reduce energy consumption and the number of parts of a system, and save on space taken up by the system, with complete functions of mould opening and closing also being realizable.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Motor starters; Motor starters for industrial refrigeration installations; Custom motor starters; Custom motor starters for industrial refrigeration installations; Variable frequency drives for motors, other than for land vehicles; Variable frequency drives for motors, other than for land vehicles, for industrial refrigeration installations; Custom variable frequency drives for motors, other than for land vehicles; Custom variable frequency drives for motors, other than for land vehicles, for industrial refrigeration installations; Soft starters for motors; Soft starters for motors for industrial refrigeration installations. Frequency converters; Frequency converters for industrial refrigeration installations; Printed circuit boards; Printed circuit boards for industrial refrigeration installations; Custom printed circuit boards; Custom printed circuit boards for industrial refrigeration installations; Electric control panels; Electric control panels for industrial refrigeration installations. Consulting services in the field of designing industrial refrigeration systems.
73.
TEMPERATURE RANGE EXTENSION FOR ELECTRIC COMPRESSOR
An electric compressor includes an electric motor including a rotor and stator and a shaft rotating with the rotor to drive a compressor impeller. Bearings support the shaft. A housing encloses the impeller shaft, the bearings and the electric motor, and a sensor for sensing a condition within the housing. A control for the electric motor receives information from the sensor indicative of the potential of migrated refrigerant when the electric motor is not running. The control is operable to actuate a countermeasure to deliver heat into the housing to boil off the migrated refrigerant. A method is also disclosed.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Motor starters; Motor starters for industrial refrigeration installations; Custom motor starters; Custom motor starters for industrial refrigeration installations; Variable frequency drives for motors, other than for land vehicles; Variable frequency drives for motors, other than for land vehicles, for industrial refrigeration installations; Custom variable frequency drives for motors, other than for land vehicles; Custom variable frequency drives for motors, other than for land vehicles, for industrial refrigeration installations; Soft starters for motors; Soft starters for motors for industrial refrigeration installations
(2) Frequency converters; Frequency converters for industrial refrigeration installations; Printed circuit boards; Printed circuit boards for industrial refrigeration installations; Custom printed circuit boards; Custom printed circuit boards for industrial refrigeration installations; Electric control panels; Electric control panels for industrial refrigeration installations. (1) Consulting services in the field of designing industrial refrigeration systems.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Motor starters; Motor starters for industrial refrigeration installations; Custom motor starters; Custom motor starters for industrial refrigeration installations; Variable frequency drives for motors, other than for land vehicles; Variable frequency drives for motors, other than for land vehicles, for industrial refrigeration installations; Custom variable frequency drives for motors, other than for land vehicles; Custom variable frequency drives for motors, other than for land vehicles, for industrial refrigeration installations; Soft starters for motors; Soft starters for motors for industrial refrigeration installations. Frequency converters; Frequency converters for industrial refrigeration installations; Printed circuit boards; Printed circuit boards for industrial refrigeration installations; Custom printed circuit boards; Custom printed circuit boards for industrial refrigeration installations; Electric control panels; Electric control panels for industrial refrigeration installations. Consulting services in the field of designing industrial refrigeration systems.
76.
HEAT EXCHANGE ASSEMBLY AND AIR CONDITIONING SYSTEM HAVING SAME
A heat exchange assembly and an air conditioning system having the same. The heat exchange assembly includes a heat exchanger and a water guide device. The heat exchanger includes a first heat exchanger core and a second heat exchanger core. The first heat exchanger core includes a plurality of first heat exchange tubes, the second heat exchanger core is located on one side of the first heat exchanger core in a thickness direction of the first heat exchanger core and comprises a plurality of second heat exchange tubes, and a lower edge of the second heat exchanger core is higher than a lower edge of the first heat exchanger core. The water guide device includes a first water guide device, wherein at least part of the first water guide device is arranged below the second heat exchanger core and used for receiving and guiding condensed water from the second heat exchanger core. The heat exchange assembly and the air conditioning system according to the present disclosure reduce the risk of the condensed water being blown out of the heat exchanger core with a higher lower edge.
F28F 17/00 - Removing ice or water from heat-exchange apparatus
F28D 1/04 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits
F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
77.
ENCLOSURE FOR A REFRIGERANT GAS LEAK DETECTION SENSOR AND REFRIGERANT GAS LEAK DETECTION SENSOR WITH AN ENCLOSURE
The present invention pertains to an enclosure for a refrigerant gas leak detection sensor, comprising a top part, a bottom part and a PCBA with a sensing element. Preferably, the enclosure is made of plastic. A gasket is provided between the sensing element and the bottom part. The invention also pertains to a refrigerant gas leak detection sensor with an enclosure.
The multi-compressor refrigeration system comprising a controller and a multi-compressor device including at least three compressors which are coupled in parallel, each compressor equipped with an oil sump and an oil level detection device, the compressors divided into two groups each including at least one compressor; suction fittings of the compressors that are fluidly connected by a common suction line and oil sumps that are fluidly connected by a common oil equalization line. The multi-compressor device includes an oil pumping device located in the common oil equalization line and between the two groups, and at least one valve located in the common oil equalization line and configured to control an oil flow between the oil pumping device and at least one compressor of a group associated with the at least one valve.
F25B 7/00 - Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Downloadable software for remote monitoring and diagnostics of HVAC equipment Software as a service (SAAS) services featuring software for remote monitoring and diagnostics of HVAC equipment
81.
HEAT EXCHANGER ASSEMBLY AND AIR CONDITIONING SYSTEM HAVING THE HEAT EXCHANGER ASSEMBLY
A heat exchanger assembly and an air conditioning system having the heat exchanger assembly. The heat exchanger assembly includes: a first heat exchanger portion and a second heat exchanger portion; and a control valve, the control valve having an open position and a closed position, at the open position, the first heat exchanger portion being in fluid communication with the second heat exchanger portion by means of the control valve, and at the closed position, the first heat exchanger portion being in fluid isolation with the second heat exchanger portion by means of the control valve. By using the heat exchanger assembly of the present disclosure, performance of the air conditioning system can be improved.
F24F 13/30 - Arrangement or mounting of heat-exchangers
F24F 11/67 - Switching between heating and cooling modes
F24F 11/84 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
A housing for a refrigerant compressor may include a first portion made of a metallic material and surrounding moving parts of the refrigerant compressor. The housing may further include a second portion mounted to the first portion and surrounding non-moving, electronic parts of the refrigerant compressor. The second portion is made of a plastic material.
09 - Scientific and electric apparatus and instruments
Goods & Services
Energy control devices; electric current control devices; frequency converters; software for the controlling and programming of the aforementioned goods.
09 - Scientific and electric apparatus and instruments
Goods & Services
Energy control devices; electric current control devices; frequency converters; software for the controlling and programming of the aforementioned goods.
09 - Scientific and electric apparatus and instruments
Goods & Services
Energy control devices; electric current control devices; frequency converters; software for the controlling and programming of the aforementioned goods.
09 - Scientific and electric apparatus and instruments
Goods & Services
Energy control devices; electric current control devices; frequency converters; software for the controlling and programming of the aforementioned goods.
09 - Scientific and electric apparatus and instruments
Goods & Services
Energy control devices; electric current control devices; frequency converters; software for the controlling and programming of the aforementioned goods.
09 - Scientific and electric apparatus and instruments
Goods & Services
Energy control devices; electric current control devices; frequency converters; software for the controlling and programming of the aforementioned goods.
89.
DETERMINING A SETPOINT FOR OPERATION OF A COOLING SYSTEM
A cooling system (10) includes a compressor (12) arranged for feeding compressed refrigerant to a condenser (18) and at least one inlet valve (36) with variable opening degree (OD) for feeding at least partly condensed refrigerant to an evaporator (34). Th evaporator (34) comprises a plurality of evaporator outlet pipes (46) connected to a common return pipe (44) arranged for feeding refrigerant back to the compressor (12). At least one temperature sensor (S1) is arranged on one of the evaporator outlet pipes (46a) for sensing an outlet pipe temperature Tout. In a calibrating phase the cooling system (10) is operated with varying opening degree (OD) of the inlet valve (36). The outlet pipe temperature Tout is monitored. A rapid change of the outlet pipe temperature Tout in response to the varying opening degree (OD) is identified and a control set point value (OHset) is determined based on the outlet pipe temperature Tout. In an operating phase the cooling system (10) is operated by controlling, based on a reading of the temperature sensor (S1), the opening degree (OD) of the inlet valve (36) to achieve the control set point (OHset).
In some aspects, the techniques described herein relate to a method of manufacturing a shrouded impeller, including: arranging a shell relative to an impeller, wherein the impeller includes a plurality of blades, wherein the shell includes a plurality of slots, and wherein the arranging step includes aligning each of the slots with a tip of a respective one of the blades of the impeller; applying brazing paste to each of the tips by using the slots to direct the brazing paste to the tips; arranging a shroud relative to the impeller; and joining the impeller and shroud using a brazing technique.
In some aspects, the techniques described herein relate to a refrigerant compressor, including: a shrouded impeller including a passageway permitting refrigerant to flow from a location radially outside a shroud of the shrouded impeller to a location radially inside the shroud.
An electric compressor includes an electric motor driving a rotor. The electric motor includes a motor rotor and stator. A current supply supplies current to the motor stator. Electronics are associated with the electric motor. The electronics are mounted on a heatsink, and the heatsink receives a connection to supply a cooling refrigerant to cool the electronic components on the heatsink. There is a cooling fluid circuit within the heatsink, with the cooling fluid circuit including at least one curved bend and a cooling channel path separated into a plurality of smaller channels. A refrigerant system is also disclosed.
F28F 13/06 - Arrangements for modifying heat transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
F28F 3/04 - Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
The invention relates to a slidable spool (1) for a spool valve (21). The spool (1) comprises at least one annular land (3, 4, 5, 6, 7, 8) around the spool core (9), where the at least one annular land (4, 5, 6, 7) comprises at least 10 one notch (11) in at least one of the side surfaces (12) of the at least one annular land (4, 5, 6, 7). The at least one notch (11) shows an essentially triangular shape. The triangular shape of the at least one notch (11) may show an opening angle (α, β) of at least 90° adjacent to the spool core (9). Additionally or 15 alternatively, a plurality of notches (11) may be arranged along the circumference of the at least one side surface (12) of the at least one annular land (4, 5, 6, 7), wherein along the majority of the circumferential extent of the at least one side surface (12) of the at least one annular land (4, 5, 6, 7) a notch (11) is present.
F16K 11/07 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with linearly sliding closure members with cylindrical slides
F16K 27/04 - Construction of housingsUse of materials therefor of sliding valves
The invention relates to a combined valve subassembly (2) and a combined valve arrangement (1) comprising a housing (3) and such a combined valve subassembly (2). The combined valve subassembly (2) comprises a variable orifice device (4) for restricting a fluid flow throughput and a valve poppet member (6) for a passive valve unit (5). The valve seat (7) of the passive valve unit (5) is formed integral with the housing (3). The combined valve subassembly (2) has a connecting member (15, 26) that comprises a guiding member (18, 27) with a guiding surface (16) for the valve poppet member (6) and at least one fluid conduit (17) for fluidly connecting the variable orifice device (4) and the valve poppet member (6).
F16K 11/10 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with two or more closure members not moving as a unit
F16K 15/18 - Check valves with actuating mechanismCombined check valves and actuated valves
F16K 27/02 - Construction of housingsUse of materials therefor of lift valves
A hydraulic arrangement (1) including a supply port (P), a return port (T), a working port arrangement (L, R), and a valve (2) controlling a supply of hydraulic fluid from the supply port (P) to the working port arrangement (L, R), wherein the valve (2) includes a housing (4) and a spool (3) movable in lengthwise direction in the housing (4) and forming together with the housing (4) at least one flow path the resistance of which depends on the position of the spool (3) in the housing (4), and the spool (3) is actuated by a hydraulic pilot pressure (21, 22) in a pressure chamber (7, 8). In such a hydraulic arrangement a safety functionality should be achieved in a simple way. To this end the housing (4) includes a pilot pressure relief port (20) connected to the return port (T) via a shut-off valve (10) and the spool (3) after a predetermined stroke (13, 14) opens a connection between the pressure chamber (7, 8) and the pilot pressure relief port (20).
F15B 13/04 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
F15B 13/02 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
F15B 13/042 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
F15B 20/00 - Safety arrangements for fluid actuator systemsApplications of safety devices in fluid actuator systemsEmergency measures for fluid actuator systems
F15B 11/16 - Servomotor systems without provision for follow-up action with two or more servomotors
A pressure retarded osmosis system (1) includes a membrane unit (2) having a high-pressure inlet connection (3) and a high-pressure outlet connection (4) on one side of a membrane arrangement (5) and a low-pressure inlet connection (6) and a low-pressure outlet connection (7) on the other side of the membrane arrangement (5). Such a pressure retarded osmosis system should be operated at a pressure higher than 140 bar. To this end the high-pressure inlet connection (3) is connected to a pressure exchanger (9), and the high-pressure outlet connection (4) is connected to a motor (20) and to a high-pressure inlet port (12) of the pressure exchanger (9), characterized in that the pressure exchanger (9) includes at least a first stage (10) and a second stage (11), the first stage (10) being arranged nearest to the high-pressure inlet connection (3) of the membrane unit (2), wherein the high-pressure inlet port (12) of the first stage (10) is connected to the high-pressure outlet connection (4) of the membrane unit (2) and a high-pressure inlet port (16) of the second stage (11) is provided with fluid having a lower pressure and a high-pressure outlet port (17) of the second stage (11) is connected to a low-pressure inlet port (14) of the first stage (10).
A hydraulic arrangement including a supply port (5), a working port arrangement (20), a valve arrangement (3, 8, 21) controlling a supply of hydraulic fluid from the supply port (5) to the working port arrangement (20), a command device (20) controlling the valve arrangement (3, 8, 21), and a sensor arrangement (19) sensing at least a working condition of the hydraulic arrangement is described. In such a hydraulic arrangement a simple way should be given to achieve a safety functionality. To this end the valve arrangement (3, 8, 21) includes flow limiting means (9) operatively coupled to the sensor arrangement (19), wherein the flow limiting means (9) limit the flow to the working port arrangement (20) depending on the at least one working condition of the hydraulic arrangement.
B62D 5/093 - Telemotor driven by steering wheel movement
B62D 5/07 - Supply of pressurised fluid for steering also supplying other consumers
B62D 5/08 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of valve used
Disclosed in the present invention is a plate heat exchanger. The plate heat exchanger comprises a first heat transfer plate and a second heat transfer plate disposed on the first heat transfer plate in a stacking direction. The first heat transfer plate comprises a plurality of protrusions protruding upwards, each protrusion of the first heat transfer plate has a top, and the plurality of protrusions of the first heat transfer plate comprise a plurality of gap forming protrusions. The second heat transfer plate comprises a plurality of recesses recessed downwards, each recess of the second heat transfer plate has a bottom, and the plurality of recesses of the second heat transfer plate comprise a plurality of gap forming recesses. The tops of the plurality of gap forming protrusions of the first heat transfer plate and the bottoms of the plurality of gap forming recesses of the second heat transfer plate respectively face each other in the stacking direction and are spaced apart by a predetermined gap. Thus, the heat exchange performance of the plate heat exchanger can be improved.
F28D 9/00 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
F28F 3/08 - Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
B21D 53/04 - Making other particular articles heat exchangers, e.g. radiators, condensers of sheet metal
