A dishwasher (1) is provided with: a supply water storage section (28) for storing supply water used to wash and rinse an object (P) to be washed received in a wash chamber (3); a discharge water storage section (15) for temporarily storing discharge water having been used to wash and rinse the object to be washed; supply water piping (27A, 27B) for supplying the supply water to the supply water storage section; and a discharge water heat recovery device (450) having a water discharge opening (19B) and exchanging heat between discharge water discharged from the water discharge opening (19B) and the supply water flowing through the supply water piping (27A, 27B). The discharge water heat recovery device (450) is disposed below the wash chamber (3) and is provided within a machine chamber (4) in which a pump (34) for feeding the supply water from the supply water storage section (28) into the wash chamber (3) is disposed.
A left-right pair of heat-blocking doors (15) are installed capable of swinging open to either side in the front-surface opening (13) of a refrigerator body (10) comprising a heat-insulating cabinet. Packing (30) is attached to the four peripheral edges of the cabinet-inner-side surface of each heat-blocking door (15), and on the cabinet-inner-side corner area of the surface (15A) facing the mating side of each heat-blocking door (15), a center seal (40), formed in a flare to allow mutual overlapping from the cabinet inner side surface toward the mating side of a lip (45), is attached via a retaining member (50) along the full height of the door. The center seal (40) and packing (30A), which is part of the packing (30) and is distributed vertically on the swinging edge of the heat-blocking doors (15), are disposed so as to come into close contact in the lateral direction, with both of the cabinet-inner-side surfaces being in a substantially flush condition.
[Problem] To improve safety and reliability when the leakage of a refrigerant occurs and prevent a decrease in ice-making efficiency when a failure in a refrigerant detection means occurs. [Solution] A refrigerant detection sensor (S) capable of detecting a refrigerant leaking from a refrigerating mechanism (E) transmits a detection signal to a control means (C) when detecting the refrigerant, and transmits a failure signal to the control means (C) when a failure in the refrigerant detection sensor occurs. When receiving the detection signal from the refrigerant detection sensor (S), the control means (C) performs control such that a cooling fan (34) for forcedly air-cooling a condenser (31) is continuously operated and an ice-making mechanism (D) stops an ice-making operation and a deicing operation. When receiving the failure signal from the refrigerant detection sensor (S), the control means (C) performs control such that the cooling fan (34) is continuously operated and the ice-making mechanism (D) continues the ice-making operation and the deicing operation.
A discharge tower (50) which is communicated with a refrigerating room (15) through a window hole (16) formed on a top wall (15B) of the refrigerating room (15) is provided to stand on the upper surface of a refrigerator (10) in which cold air is supplied and circulated in the refrigerating room (15). A beer hose (35) drawn from a beer barrel (B) housed in the refrigerating room (15) stands in the discharge tower (50) and is connected to a discharge port (52) provided on the upper end portion of the discharge tower. A cooling tool (60) made of a material having a superior thermal conductivity and provided with a cold energy collection plate (62) at the lower end of a pipe (61), is provided. The cold energy collection plate (62) of the cooling tool (60) is attached to cover the window hole (16), the pipe (61) is arranged to stand in the discharge tower (50), thermal insulation materials (70, 71) are filled around the pipe (61), and the beer hose (35) is inserted in the pipe (61).
A refrigerator body (10) is rockably provided with a door (13) on the right edge of a front opening (12) of a body box (11). At the deep left corner of the body box (11), a duct panel (24) is installed diagonally to cover generally the entire height to thereby form a vertically elongated cooling duct (20), while a cooler (27) and a cooling fan (28) are installed one on top of the other. Two small beer barrels (Bs) are stored at the deep right corner and the front left side in the body box (11) diagonally side by side so as to be generally in parallel to the panel (24). A large beer barrel (Bl) is substantially snugly received in a cooling chamber (15) while part of the front portion protruding frontward is received in a recessed clearance portion (14) formed on the back of the door (13). The cooling fan (28) is disposed behind a transfer grille (26) that is located at an upper position of the panel (24), with the center axis of rotation (28o) oriented toward the upper end of the beer barrel (B) that is stored.
An ice-making machine, wherein first and second guard wall parts, which are positioned facing one another with an ice shard transit passage within a bracket body interposed therebetween, and which extend in a downward direction from the upper part of the bracket body so as to extend the inner wall surface of the chute part, are provided inside the bracket body. A light-emitting unit and a light-receiving unit that constitute an optical ice storage sensor face the ice shard transit passage via a first and second opening formed in the first and second guard wall parts.
In order to reduce the number of components, the size, and the cost of an electrolyzed water generation device, disclosed is an electrolyzed water generation device wherein the concentration of dilution of electrolyzed water is regulated by providing a control means which controls the start and stop of the operation of an electrolysis tank according to the opening/closing operation of a water supply valve and controls the operation of a salt water pump in order to regulate the concentration of water to be electrolyzed that is supplied to the electrolysis tank, a dilute water supply pipe line which diverges from a raw water supply pipe line downstream from the water supply valve, and a communication pipe line which, in order to dilute the electrolyzed water which has flowed out of one electrolysis chamber of the electrolysis tank by raw water diverted to the dilute water supply pipe line when the electrolysis tank is operated, connects the electrolysis chamber to the dilute water supply pipe line , and adjusting the percentage of the raw water to be diverted from the raw water supply pipe line to the dilute water supply pipe line.
Disclosed is a refrigerated showcase for which maintenance operations for a cooling mechanism that is disposed in a machine room can be easily performed. On a side portion of a heat-insulated box (16) that defines a storage room (12) and that is provided with a cooler for cooling the storage room (12), a machine room (13) in which a cooling mechanism (80) for circulating a refrigerant to the cooler is defined, and the front surface side of the storage room (12) and the machine room (13) are covered with a single front glass (14). In addition, a removable second side panel defines a side surface of the machine room (13), which is configured so that the machine room (13) opens to the side in a state in which the second side panel is removed, and is also configured so that the cooling mechanism (80) is placed on a unit base (38) that is extractable from the machine room (13), so that by removing the second side panel, the unit base (38) can be extracted from the machine room (13) through the side portion open portion of the machine room (13) which has been opened.
Disclosed is an ice making machine wherein slush ice can be prevented from occurring while an increase of the manufacturing cost is suppressed. An ice making machine (M) is provided with an operation switching means (C1) which switches a circulation pump (25) from a continuous operation to an intermittent operation by detecting a predetermined first setup temperature of a temperature detection means (38) which measures the temperature at the outlet of an evaporator which constitutes a refrigeration mechanism. Also, the ice making machine (M) is provided with a slush ice preventing means (C2) which stops the circulation pump (25) for a setup period of time and drives the circulation pump (25) for a setup period of time in the intermittent operation. Further, the ice making machine (M) is provided with a slush ice prevention extending means (C3) which returns the circulation pump to the continuous operation after performing a predetermined number of cycles in the intermittent operation by detecting a second setup temperature which is lower than the first setup temperature of the temperature detection means (38) and higher than 0°C in the intermittent operation.
Provided is an automatic ice maker wherein the water supply quantity can be changed in accordance with the temperature of makeup water. The automatic ice maker is provided with a deicing timer (42) which measures a deicing completion time (T1) at which a deicing operation is to be completed. Further, a maximum deicing water supply time (U1), i.e., the maximum amount of time to supply deicing water during a deicing operation is preset in a control means (24). If the deicing operation progresses slowly because the temperature of deicing water is low, and the deicing completion time (T1) is equal to or longer than the maximum deicing water supply time (U1), the water supply quantity is adjusted to correspond to a water supply quantity when the temperature of deicing water is low by the control means (24). On the other hand, if the deicing operation progresses rapidly because the temperature of deicing water is high, and the deicing completion time (T1) is shorter than the maximum deicing water supply time (U1), the water supply quantity is adjusted to correspond to a water supply quantity when the temperature of deicing water is high, which is larger than the water supply quantity when the temperature of deicing water is low.
A door body holding structure capable of holding a door body at an open position using a simple configuration. A projection (40) which projects toward the containing wall (38) side is provided on the outer surface of a bearing section (32) of a fixed-side hinge (26) so as to be located at a position which faces the containing wall (38) and at which, when a door body (18) is at a closed position, the projection does not make contact with the inner surface of a guide section (34) and, when the door body (18) comes to a closed position, the projection makes contact with the inner surface of the guide section (34). The distance of separation between the tip of the projection (40) and the containing wall (38) is set to be less than the thickness of the guide section (34). That is, when the door body (18) is pivoted from the closed position to the open position to cause the inner surface of the guide section (34) to come to a position at which the inner surface makes contact with the projection (40), the guide section (34) is sandwiched between the projection (40) and the containing wall (38) to enable the door body (18) to be held at the open position.
The size of a steam generator is reduced. A steam generator (20) is equipped with: a cylindrical steam generator vessel (30) that is configured, at the upper end of a steam generation part thereof, with a steam passage (32) which discharges upward from an outlet (32a) thereof, steam which is produced on the interior of the steam generation part (31) that stores a specified quantity of water and generates steam; a heating body (40), which is disposed on the interior of the steam generation part (31) of this steam generator vessel (30); and an induction heating coil (50), which is wrapped around the circumference of the steam generator vessel (31) and causes the heating body (40) to generate heat. Steam generated by boiling water supplied into the steam generation part with the heating body (40), heated by supplying electricity to the induction heating coil (50), is discharged from the steam passage (32). In this steam generator (20), a steam exhaust tube (70) is provided, which collects steam discharged upward from the steam passage (32) at the upper end of the steam passage and leads out the steam horizontally so that water droplets adhering to the ceiling of the steam exhaust tube (70) drop and are directly circulated into the steam generation part (31).
Provided is an inexpensive and compact cooling device without causing increases in circulation resistance of refrigerant, filling quantity of refrigerant in the circuit, and cross-sectional area of each passage while maintaining a desired cooling efficiency in a natural circulation circuit in which natural convection of refrigerant is caused by using thermosiphon. A secondary cooling device (40) comprises a secondary heat exchange section (42) of a cascade heat exchanger (HE) for liquefying gas-phase secondary refrigerant, and an evaporator (EP) for vaporizing liquid-phase secondary refrigerant. The secondary cooling device (40) is provided with a plurality of natural circulation circuits (48) equipped with liquid piping (44) and gas piping (46) which connect the secondary heat exchange section (42) and the evaporator (EP). The evaporator (EP) is provided with evaporation passages (52) of the natural circulation circuits (48) in layers with a vertical space between one another. The evaporation passage (52) is constituted of a spiral fin tube heat exchanger where fins are wound spirally on the outer circumference of an evaporation pipe through which the secondary refrigerant circulates.
Disclosed is an auger-type ice maker affording, among other things, improved ice-making efficiency, a compact ice-making mechanism and ice-maker, reduced manufacturing costs, and a stable supply of ice-making water. An ice-making mechanism (32) comprises a refrigeration casing (33) having an inner wall surface (40) that serves as an ice-making surface cooled by a refrigeration circuit, and an auger (34) having a rotating blade (50) that faces towards the inner wall surface (40). The ice-making mechanism (32) is disposed in a reservoir tank (37) in which ice-making water is stored, in such a way as to be immersed in this ice-making water. As a result, the ice-making water which has not yet been supplied to the ice-making mechanism (32) comes into contact with the refrigeration casing (33) so as to be appropriately cooled thereby, and the ice-making water functions as a heat-insulating material for the ice-making mechanism (32).
F25C 1/14 - Producing ice by freezing water on cooled surfaces, e.g. to form slabs to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes
A cooking device provided with a vapor producing device having a reduced size and capable of producing vapor in a short time. A cooking device is provided with a cooking chamber for cooking a foodstuff contained therein, a heater for heating the inside of the cooking chamber, and an electric fan mounted so as to convect air heated in the cooking chamber by the heater. An induction heating type vapor producing device comprising a vapor producing container and an induction heating coil is mounted to a side wall section of the cooking chamber. The vapor producing container contains a predetermined amount of water and supplies vapor to the inside of the cooking chamber, the vapor being vapor produced by generation of heat by a heating element mounted in the vapor producing container. The induction heating coil is wound around the vapor producing container in order to heat the heating element.
F24C 1/00 - Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of groups Stoves or ranges in which the type of fuel or energy supply is not specified
F24C 7/04 - Stoves or ranges heated by electric energy with heat radiated directly from the heating element
A cooking device, wherein, independent of the amount and the temperature of a foodstuff contained in a cooking chamber of the cooking device, the foodstuff can be heated in a certain period of time by initial heating processing and main heating processing. A cooking device is provided with a controller for performing initial cooking processing before a transition to main heating processing. The initial cooking processing is processing which, when the temperature in a cooking chamber is reduced by a foodstuff placed in the cooking chamber, controls supply of electricity to a heater provided in the cooking chamber, and the control is performed such that the temperature in the cooking chamber rises along a temperature rise line which defines a temperature rise rate at which the temperature in the cooking chamber reaches a predetermined preset cooking temperature from an initial-heating start temperature, which is set on the basis of a previously determined time period for initial heating, after the time period for initial heating has elapsed.
F24C 1/00 - Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of groups Stoves or ranges in which the type of fuel or energy supply is not specified
F24C 7/04 - Stoves or ranges heated by electric energy with heat radiated directly from the heating element
19.
WATER SPRAY PIPE FOR DOWNFLOW TYPE ICE MAKING MACHINE
A water spray pipe for a downflow type ice making machine regulates the flow of ice making water to suppress occurrence of turbulence and can uniformly supply the ice making water from water spray holes. A water spray pipe (22) comprises a pipe body (24) mounted extending above an ice making section, having defined therein a flow region (38) for ice making water, and having one end communicating with a discharge opening of a circulation pump (30), and also comprises water spray holes (26) formed in the lower surface of the pipe body (24) so as to be arranged in the direction in which the pipe body extends. A restricting section (40) projecting from the inner surface of the pipe body (24) to the flow region (38) side to locally narrow the flow region (38) is provided at a position which is on the upper surface of the pipe body (24) and on the upstream of the upstream-most water spray hole (26). A semicircular restricting section (42) is formed on the downstream of the restricting section (40) of the pipe body (24).
Ice making water is uniformly supplied to an ice making region of an ice making section. A water sprayer (30) is provided with a water spray section (32) provided above an ice making section (12) so as to extend in the width direction thereof and supplying ice making water to an ice making region (20) from water spray holes (34) arranged spaced from each other in the width direction, a buffer section (36) provided next to the water spray section (32) and having, at one end of the buffer section (36) in the width direction, an introduction section (38) for receiving the ice making water delivered under pressure, and a communication section (40) provided between the water spray section (32) and the buffer section (36) and leading the ice making water, which is received by the buffer section (36), to the water spray section (32) through the communication hole (42).
Provided is a dishwashing machine (1) capable of saving energy, which sprays wash water, stored in a wash water tank (15), into a washing chamber (5). In normal mode, a wash water heater (16) is controlled, on the basis of measurements made by a wash water temperature sensor (17), so that the temperature of the wash water in the wash water tank (15) becomes equal to a set temperature. When operation is paused, the dishwashing machine goes into a standby mode, and the wash water heater (16) is controlled so that the temperature of the wash water in the wash water tank (15) becomes equal to a standby temperature, which is lower than the set temperature. By going into normal mode when busy and going into a standby mode when paused, the dishwashing machine (1) can realize energy savings.
A thermostat (105) is directly mounted to the outer surface of a bottom plate (44) of an evaporation tank (41) so as to be in direct contact therewith. A heat transfer plate (111) is expanded and mounted, through a heat insulating sheet (115), to a deep-end wall (30A) of a mounting recess (30) in a refrigerator body (10). A heat receiving surface (112) of the heat transfer plate (111) is located at a height facing the rear side of a horizontal section (51) of an evaporating heater (50), and a contact plate (45) extended from the bottom plate (44) of the evaporation tank (41) is in linear contact with the heat receiving surface (112). A temperature fuse (110) is held in close contact with a mounting surface (113) at the lower end of the heat transfer plate (111) by a fuse holder (117). Heat of the evaporation tank (41) is transmitted in a dampened state to the mounting surface (113) of the heat transfer plate (111), and even if the temperature of the evaporation tank (41) rises to a level at which the temperature fuse (110) should be blown, the temperature of the mounting plate (113) of the heat transfer plate (111) only rises to a level lower than such a temperature.
Allowable stress of a separating blade is increased. An ice making mechanism (30) is provided with a circular tube-like refrigeration casing (64) having, provided on the inner peripheral surface thereof, an ice making surface (64a) cooled by the refrigeration mechanism, and also with an auger (50) having a separating blade (54) which is provided on the outer peripheral surface (52a) of the auger (50), which outer peripheral surface faces the ice making surface (64a), and mounted on the inner side of the casing (64) so as to be rotatable about a vertically extending line. The ice making mechanism (30) is adapted such that ice formed on the ice making surface (64a) is conveyed after being separated by the separating blade (54) of the auger (50) rotationally driven by a drive means (76). The separating blade (54) is configured such that support surfaces (55a, 55b) vertically facing each other across a blade edge (56a) facing the ice making surface (64a) are separated from each other as they are extended from the blade edge (56a) toward the outer peripheral surface (52a) of an auger body (52) and are curvedly connected to the outer peripheral surface (52a).
F25C 1/14 - Producing ice by freezing water on cooled surfaces, e.g. to form slabs to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes
24.
COOLING DEVICE AND METHOD FOR MANUFACTURING THE SAME
Disclosed is a cooling device wherein the amount of primary refrigerant used is reduced without decreasing the heat exchange efficiency in a plate type heat exchanger and the height dimension of the plate type heat exchanger is controlled. A primary circuit for circulating the primary refrigerant mechanically and forcibly comprises a primary heat exchanging section (36) formed in a plate type heat exchanger (HE) and evaporating condensed primary refrigerant, and a secondary circuit for circulating secondary refrigerant naturally comprises a secondary heat exchanging section (46) formed in the plate type heat exchanger (HE) and condensing the secondary refrigerant. In the plate type heat exchanger (HE), primary liquid piping (38) connecting a condenser and the primary heat exchanging section (36) and secondary liquid piping (48) connecting the secondary heat exchanging section (46) and an evaporator are connected to one end on the same side, primary gas piping (40) connecting a compressor and the primary heat exchanging section (36) and secondary gas piping (50) connecting the secondary heat exchanging section (46) and the evaporator are connected to the other end on the same side, and the plate type heat exchanger (HE) is arranged in a posture inclining relative to a horizontal plane.
F25B 1/00 - Compression machines, plants or systems with non-reversible cycle
F28D 9/02 - 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 the heat-exchange media travelling at an angle to one another
An ice making mechanism is downsized. An ice making mechanism (30) is provided with a circular tube-like refrigeration casing (64) having, provided on the inner peripheral surface thereof, an ice making surface (64a) cooled by the refrigeration mechanism, and also with an auger (50) having a separating blade (54) which is provided on the outer peripheral surface (52a) of the auger (50), which outer peripheral surface faces the ice making surface (64a), and mounted on the inner side of the casing (64) so as to be rotatable about a vertically extending line. The ice making mechanism (30) is adapted such that ice formed on the ice making surface (64a) is conveyed after being separated by the separating blade (54) of the auger (50) rotationally driven by a drive means (76). The auger (50) is rotatably supported by a bearing section (44) having a circular tube-shaped shaft section (45) which supports an auger body (52) and has on the inner side thereof an ice discharge path (35a), and also having a mounting section (47) for supporting the auger body (52) such that downward movement of the auger body (52) is restricted.
F25C 1/14 - Producing ice by freezing water on cooled surfaces, e.g. to form slabs to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes
A space in a machine compartment is effectively used to secure a sufficient head between a heat exchanger and an evaporator. A cooling device is provided with a secondary circuit (44) having a secondary heat-exchanging section (46), which condenses a gas phase secondary refrigerant into a liquid phase secondary refrigerant, and also having an evaporator (EP), which evaporates the liquid phase secondary refrigerant into the gas phase secondary refrigerant. The secondary heat-exchanging section (46) and the evaporator (EP) are connected to each other by liquid piping (48) and gas piping (50). The liquid phase refrigerant is caused to flow from the secondary heat-exchanging section (46) to the evaporator (EP) through the liquid piping (48), and the gas phase refrigerant is caused to flow from the evaporator (EP) to the secondary heat-exchanging section (46) through the gas piping (50). A heat exchanger (HE) is located above a compressor (CM) mounted in a machine compartment and is located below a condenser (CD) mounted in the machine compartment (20) and forming a primary circuit (34).
F25B 1/00 - Compression machines, plants or systems with non-reversible cycle
F25D 9/00 - Devices not associated with refrigerating machinery and not covered by groups Combinations of devices covered by two or more of the groups
F25D 17/02 - Arrangements for circulating cooling fluidsArrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes
27.
ICE MAKING MACHINE EQUIPPED WITH ICE STORAGE COMPARTMENT
An ice making machine in which the constituent components of a refrigerating unit mounted in a machine compartment is appropriately cooled by introduction and discharge of cooling air to and from the machine compartment. An ice making machine is provided with a box-shaped lower housing having an ice storage compartment mounted therein, a box-shaped upper housing having the lower housing mounted on the upper portion at the rear thereof, an ice making mechanism section mounted on the front side in a machine compartment formed inside the upper housing and producing ice blocks, and a refrigerating unit mounted behind the ice making mechanism section and supplying cooling refrigerant to the ice making mechanism section, an opening and closing lid mounted at an opening formed between the lower end of the front face of the upper housing and the upper end of the front face of the lower housing, an air suction path for causing outside air introduced from the front face of the lower housing to flow as cooling air into the machine compartment along the inner surface of one side wall and the inner surface of the rear wall, respectively, of the lower housing, and an air discharge path for causing the air after cooling to flow out along the inner surface of the rear wall and the inner surface of the other side wall, respectively, of the lower housing and discharging the air to the outside from the front face of the lower housing.
An ice making unit which allows quick separation of ice blocks from ice making plates to improve ice making performance and which is compact in size. An ice making section (10) is provided with a vertically arranged pair of ice making plates (14, 14) and also with evaporating tubes (16) arranged between the opposed rear faces of both the ice making plates (14, 14). On the surface of each ice making plate (14) are formed vertically extending ridges (18) arranged at predetermined intervals in the lateral direction, and the ridges (18) form ice making regions (20) separated from each other in the lateral direction. The ice making plates (14), which face the ice making regions (20), each have vertically continuously arranged multi-stepped slope sections (22) each extending obliquely downward so as to be away from the rear side to the front side as the slope section extends downward. Each evaporating tube (16) is mounted such that a lateral extending section (16a) of the evaporating tube (16) makes contact with substantially the middle in the vertical direction of the rear side of each slope section (22).
A low cost and highly safe electromagnetic induction heating device capable of uniformly heating an object to be heated. A work coil (26) has a fundamental coil (28) located at the innermost position, a first coil (30) located at the intermediate position, and a second coil (32) located at the outermost position. The first coil (30) and the second coil (32) are connected in series to the fundamental coil (28), and the first coil (30) and the second coil (32) are parallelly connected to each other. A first switching circuit (16) for supplying a high-frequency current is connected to the first coil (30). A second switching circuit (18) for supplying a high-frequency current is connected to the second circuit (32).
An electrolyzed water production system which regulates the supply amount of strong salt water to be mixed into raw water supplied from a water supply source by feedback control such that the electrolysis current of diluted salt water introduced into an electrolytic bath by mixing the strong salt water supplied from a salt water tank into the raw water has a predetermined current level, where in when the electrolysis conditions of diluted salt water are altered, regulation of the supply amount of strong salt water by feedback control is interrupted temporarily, the supply amount of strong salt water to be mixed into raw water is controlled depending on the alteration factor of the electrolysis conditions, and the supply amount of strong salt water is regulated by feedback control after such a state that the electrolysis current of diluted salt water is maintained at the set current level.
It is possible to obtain a compact cooling device without degrading a desired cooling efficiency. A secondary cooling device (70) includes: a heat exchange unit (46) which condensates vaporized coolant flowing in a condensation path (47) into a liquid coolant; and an evaporator (EP) which is arranged at the downstream side of the heat exchange unit (46) and evaporates the liquid coolant flowing in an evaporation pipe (52) into the vaporized coolant. A secondary cooling device (70) includes a plurality of natural circulation paths (72) which are independent from one another. In each of the natural circulation paths (72), the liquid coolant is made to flow down from the condensation path (47) of the heat exchange unit (46) to the evaporation pipe (52) of the evaporator (EP) via a liquid distribution pipe (48) while the evaporated coolant is made to flow from the evaporation pipe (52) of the evaporator (EP) to the condensation path (47) of the heat exchange unit (46) via a gas distribution pipe (50).
F25B 1/00 - Compression machines, plants or systems with non-reversible cycle
F25D 16/00 - Devices using a combination of a cooling mode associated with refrigerating machinery with a cooling mode not associated with refrigerating machinery
F25D 17/00 - Arrangements for circulating cooling fluidsArrangements for circulating gas, e.g. air, within refrigerated spaces
F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes
A downward flow type ice making machine which can suitably discharge ice making water contained in a water spray guide. The downward flow type ice making machine (30) has an ice making section (16) where an evaporation pipe (32) is placed in a meandering pattern, an ice making water supply pipe (12) placed above the ice making section (16) and supplying ice making water, and a water spray guide (46) placed between the ice making section (16) and the ice making water supply pipe (12) and allowing the ice making water supplied from the ice making water supply pipe (12) to flow down uniformly onto the surface of the ice making section (16) through a guide hole (52). The water spray guide (46) has a receiving section (54) opened upward toward the ice making water supply pipe (12) and receiving the ice making water, and also has a slope surface section (56) formed in the receiving section (54) so as to incline downward to approach the ice making section (16) and having a lower end facing the guide hole (52). Further, the receiving section (54) has a water discharge section (58) for discharging the ice making water contained in the receiving section.
A pump motor installation structure for an ice making machine, in which a reduction in ice making efficiency and entry of dust into an ice making chamber are prevented and in which installation and removal of an ice making water tank from the machine are facilitated. A tank receiving section (30) is provided to extend from the ice making chamber to a machine chamber (12), and the ice making water tank (T) is drawably received in the tank receiving section (30). A motor installation member (36) for partitioning between the machine chamber (12) and the tank receiving section (30) is removably installed on an upper end placement section (32B) of a partition wall (32) partitioning between the machine chamber (12) and the tank receiving section (30). A pump motor (PM) is installed on that side of the motor installation section (36) which faces the machine chamber (12). A pump (WP) is installed on that side of the motor installation section (36) which faces the tank receiving section (30). The motor installation member (36) is supported from below by a motor support piece (74) provided on the ice making water tank (T).
An electrolysis water generator which regulates the quantity of strong salt water mixed with raw water supplied from a water supply source by feedback control so that the electrolysis current of diluted salt water may have a preset reference current value in an electrolytic cell to which the diluted salt water obtained by mixing strong salt water with the raw water is introduced comprises a storage means for storing a control map indicating an electrolysis current value generated according to the electric conductivity of the raw water, a calculating means for calculating the electrolysis current value generated according to the electric conductivity of the raw water detected previously with reference to the control map in the storage means and then subtracting the electrolysis current value thus calculated from the reference current value, and a control means for regulating the quantity of strong salt water mixed with the raw water so that the electrolysis current of the diluted salt water under the feedback control may be the electrolysis current value corrected by the subtraction by the calculation means.
A refrigeration storage has a function by which, when a refrigerating capacity obtained only by the operation of an inverter compressor (32A) in a first refrigeration circuit (31A) is insufficient, a constant speed compressor (32B) in an independently provided second refrigeration circuit (31B) can be additionally operated. The constant speed compressor (32B) can be activated, however, only when a speed increase instruction is issued continuously four times to the inverter compressor (32A) after the inverter compressor (32A) has reached the maximum number of revolutions. This avoids the constant speed compressor (32B) from being unnecessarily driven, for example, when temperature inside is abruptly changed.
During a controlled refrigeration process, even if only a refrigerating capacity obtained by an inverter compressor (32A) of a first refrigeration circuit (31A) becomes insufficient and a request for activating a constant speed compressor (32B) of a second refrigeration circuit (31B) is issued, the constant speed compressor (32B) is not immediately activated, but can be activated only by waiting until a temperature inside (TR) increases up to the upper limit temperature (TH) of a setting temperature (To). When the two compressors (32A, 32B) are in operation, even if a request for deactivating the constant speed compressor (32B) is issued, the constant speed compressor (32B) is not immediately deactivated, but can be deactivated only by waiting until the temperature inside (TR) drops down to a tentative lower limit temperature (TLk) that is higher than a lower limit temperature (TL) but is below the setting temperature (To) by a predetermined value.
A refrigeration system (30) comprises a refrigeration circuit of two independent systems consisting of a first refrigeration circuit (31A) provided with an inverter compressor (32A), and a second refrigeration circuit (31B) provided with a constant speed compressor (32B). And an evaporator (37) is shared by the both refrigeration circuits (31A, 31B). Normally, the inverter compressor (32A) is driven and the constant speed compressor (32B) is driven together as required. The evaporator (37) has a fin group (41) consisting of a plurality of fins (40) arranged in a posture along the air circulation direction while spaced apart from each other in the direction intersecting the air circulation direction. Evaporation pipes are laid vertically over four stages for the fin group (41) to penetrate each fin (40) while staggering along the air circulation direction. The first evaporation pipe (45A) of the first refrigeration circuit (31A) is laid in the lower two stages, and the second evaporation pipe (45B) of the second refrigeration circuit (31B) is laid in the upper two stages.
An ice making water tank for an automatic ice making machine, in which a float switch operates stably. On the outer side of a tank section (52) of the ice making water tank (32), there is formed an overflow section (64) having a wall (58) that defines the highest level of ice making water that is contained in the tank and also having a raised bottom (60) that discharges excess ice making water, which is ice making water having overflowed the wall (58), to the outside through a discharge opening (62). A partition member (68) is removably installed in the tank (52) at a position closer to the overflow section (64) than the position of a circulation pump (14) in the tank (52), and the partition member (68) partitions the inside of the tank (52) into two regions and allows ice making water near the bottom (56) to flow between both the regions. The float switch (26) is placed in the tank (52), between the partition member (68) and the overflow section (64).
In the operation of an inverter compressor (32) within a control zone, an actual temperature drop (S) is calculated at each predetermined sampling time on the basis of an indoor temperature (TR) detected, and a target temperature drop (Ac) in the indoor temperature (TR) is outputted from the data of cooling characteristics (Xc). If the actual temperature drop (S) is smaller than the target temperature drop (Ac), the inverter compressor (32) is controlled to accelerate. In the opposite case, the inverter compressor (32) is cooled according to the cooling characteristics (Xc) while being controlled to decelerate. Especially after the indoor temperature (TR) dropped from an upper limit temperature (TH) to a set temperature (To), the speed control of the inverter compressor (32) is made so that the target temperature drop may be substantially 0 (or cooling characteristics (Xc2)).
F25D 11/00 - Self-contained movable devices associated with refrigerating machinery, e.g. domestic refrigerators
F25D 11/02 - Self-contained movable devices associated with refrigerating machinery, e.g. domestic refrigerators with cooling compartments at different temperatures
An ice dispenser has a discharge mechanism (30) between an ice storage chamber (10) having an ice discharge opening (14) at its bottom and a chute (20) for guiding ice pieces received by a reception/delivery opening (22) placed away from a position directly under the discharge opening (14). The discharge mechanism (30) has a fixed member (32) extending from under the discharge opening (14) to the opening edge of the reception/delivery opening (22), and also has a movement member (36) reciprocated along the fixed member (32) by a drive section (40) and having vertically penetrating holes (38) arranged spaced apart in the direction of movement of the movement member (36). The discharge mechanism (30) is adapted so that a control section controls the drive section (40) to change the amount of movement of the movement member (36) from the discharge opening (14) side to the reception/delivery opening (22) side, thereby the total number of holes (38) to be exposed to the reception/delivery opening (22) is adjusted corresponding to the amount of ice supply inputted from an input section.
A method of operating an ice making machine efficiently provides a clean ice block. An ice storage switch (TS) is installed in an ice storage chamber (16) where an ice block (M) separated by ice removal operation is received. When the ice storage switch (TS) detects that the ice storage chamber (16) is full, a special water-discharge operation is performed. The special water-discharge operation opens a water discharge valve (DV), which is provided at water discharge means (44), after ice removal operation is completed, and this discharges ice making water from the ice making tank (20) to the outside through the water discharge means (44). Then, after the discharge of the ice making water to the outside is started, if a predetermined duration time (T) passes after a float switch (FS) provided in the ice making tank (20) detects an ice making completion water level (LWL) of the ice making water in the ice making water tank (20), the special water discharge operation closes the water discharge valve (DV) to finish the special water discharge operation.
A sprinkle guide provided above an ice-making plate (18) in a trickle ice-making machine having the ice-making plate (18) on which vertically extending protrusions (20) are formed while spaced apart in the lateral direction and making a lump of ice (M) from ice-making water supplied to an ice-making plane (22a) provided between adjoining protrusions (20, 20), and an ice-making water tank (26) provided below the ice-making plate (18) and collecting the ice-making water trickling from the ice-making plane (22a) of the ice-making plate (18) and guiding the ice-making water supplied from the ice-making water tank (26) to the ice-making plane (22a) of the ice-making plate (18) comprises a cover portion (42) located above each protrusion (20), a guide portion (44) provided between adjoining cover portions (42, 42) to face the ice-making plane (22a) while inclining downward from the projection end side of the protrusion (20) toward the ice-making plane (22a) side and guiding the ice-making water to the ice-making plane (22a) through a slit (44a) defined between the inclination lower end and the ice-making plane (22a), and a cut (48) provided at the upper end of the guide portion (44) and formed lower than the upper end of the cover portion (42).
A liquid refrigerant from compressor (20) and condenser (21) is alternately supplied through three-way valve (24) to cooler (27F) for refrigeration room and evaporator (27R) for chillroom so as to effect cooling of the refrigeration room and the chillroom. When the condition of thermal load of refrigeration cycle (40) is light, after stop of the compressor (20), the three-way valve (24) is brought to 'F-side open mode' with the result that flow of the liquid refrigerant into the evaporator (27R) for chillroom is blocked to thereby attain a pressure balance. In a cooling storage building wherein from one compressor a refrigerant is selectively supplied to multiple evaporators, there can be attained prevention of one evaporator side from falling into a supercooled condition and further realization of immediate pressure balance after stop of the compressor.
F25D 11/02 - Self-contained movable devices associated with refrigerating machinery, e.g. domestic refrigerators with cooling compartments at different temperatures
F25B 5/02 - Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
44.
COOLING STORAGE BUILDING AND METHOD OF OPERATING THE SAME
[PROBLEMS] In a cooling storage building wherein from one compressor a refrigerant is selectively supplied to multiple evaporators respectively disposed in multiple storage rooms of varied thermal loads, to prevent any temperature rise of a storage room of higher thermal load. [MEANS FOR SOLVING PROBLEMS] A liquid refrigerant from compressor (20) and condenser (21) is alternately supplied through three-way valve (24) to cooler (27F) for refrigeration room and evaporator (27R) for chillroom so as to carry out alternate cooling of the refrigeration room and the chillroom. Regardless of which one of the refrigeration room (13F) and the chillroom (13R) is first in reaching a lower limit set temperature, the refrigeration room (13F) (storage room of higher thermal load) is necessarily cooled last and the temperature thereof is decreased to the lower limit set temperature.
F25D 11/02 - Self-contained movable devices associated with refrigerating machinery, e.g. domestic refrigerators with cooling compartments at different temperatures
F25B 5/02 - Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
45.
COOLING STORAGE CHAMBER AND METHOD FOR OPERATING THE SAME
Cooling of a freezing compartment and a refrigeration compartment is performed alternately by supplying liquid refrigerant from a compressor (20) and a condenser (21) alternately to a chiller (27F) for the freezing compartment and an evaporator (27R) for the refrigeration compartment through a three-way valve (24). The ratio of refrigerant supply time to respective evaporators is not controlled based on the difference between a target temperature set for each storage compartment and the actual temperature measured in each storage compartment but controlled based on the integrated value of the difference. Since the integrated value of temperature difference does not vary suddenly even if the door is opened temporarily and the temperature in the compartment is raised temporarily by outer air flowing into the storage compartment, unnecessary transition to alternate cooling mode can be prevented when one storage compartment is in cooling mode. In a cooling storage chamber where refrigerant is supplied from one compressor selectively to a plurality of evaporators provided in a plurality of storage compartments of different thermal load, respectively, unnecessary transition to alternate cooling mode is prevented when one storage compartment is in cooling mode.
F25D 11/02 - Self-contained movable devices associated with refrigerating machinery, e.g. domestic refrigerators with cooling compartments at different temperatures
F25B 5/02 - Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
46.
COOLING STORAGE AND METHOD FOR CONTROLLING COMPRESSOR FOR THE COOLING STORAGE
A deviation calculation means (42) calculates the deviation of the temperature in a storage detected by a temperature sensor (35) from a target temperature given from a target temperature setting means (41) every predetermined time, a deviation integration means (46) integrates the deviation, and the number of revolutions of an inverter motor for driving a compressor is increased on conditions that the integrated value exceeds a predetermined reference value. Even if a door is opened temporarily and the temperature in the storage is raised temporarily by outer air flowing into the storage chamber, the integrated value of temperature deviation is not varied suddenly and control is stabilized because the number of revolutions of the compressor does not react too sensitively to quickly increase. The cooling storage can be prevented from responding to sudden change of temperature in the refrigerator with unnecessary sensitivity and it can be operated with higher efficiency.
To restrict the deposition of stain on an ice making unit, and prevent damage to resin components or the like. The above problems are solved by the followings. Ice making water is supplied to the front surface of an ice making plate cooled by refrigerant supplied to an evaporation tube during an ice making cycle to produce ice blocks. During a deicing cycle, deicing water is supplied by opening a water feed valve WV to the rear surface of the ice making plate to be heated by hot gas supplied to the evaporation tube. When a water feed time has elapsed, the water feed valve WV is closed to temporarily stop deicing water supply. After the water feed time elapsed, a cycle, in which the water feed valve WV is opened as much as an intermittent water supply time every time an intermittent stopping time has elapsed to intermittently supply deicing water, is repeated until a deicing cycle completes.
F25C 5/10 - Apparatus for disintegrating, removing or harvesting ice without the use of saws by heating bodies in contact with the ice using hot refrigerantApparatus for disintegrating, removing or harvesting ice without the use of saws by heating bodies in contact with the ice using fluid heated by refrigerant
F25C 1/12 - Producing ice by freezing water on cooled surfaces, e.g. to form slabs
To prevent incorrect operation of an operating member provided in an electric component box without giving complicated processing on a front panel. An opening formed in the front portion of a housing (11) to correspond to a machine room (14) is closed with a front panel (20). A suction louver (25) and a delivery louver (26) are formed in the front panel (20). An inserting/withdrawing opening (28) used for inserting/withdrawing a filter (34) is opened above the position for forming the suction louver (25) in the front panel (20). A base portion (38) being fitted in the inserting/withdrawing opening (28) to close the opening (28) is formed above the filter (34). A power switch (43) and a service switch (44) are provided on the front of the electric component box (42) arranged in the machine room (14). The portion for arranging the power switch (43) and the service switch (44) in the electric component box (42) opposes the rear of the inserting/withdrawing opening (28). When the filter (34) is fixed to the front panel (20), the front side of the power switch (43) and the service switch (44) is covered with the base portion (38).
A down flow type ice making machine in which an ice storage detector is protected against damage and occurrence of failure can be suppressed. An ice storage chamber (12a) for storing ice blocks (M) is defined in an ice storage compartment (12). Upper rear wall (16) of the ice storage compartment (12) is formed of a wall portion (16a) extending vertically, and a wall portion (16b) extending horizontally rearward from the lower end of the vertical wall portion (16a). At an upper portion in the ice storage chamber (12a), a down flow ice making unit (18) is arranged while spaced apart by a predetermined interval forward from the vertical wall portion (16a) and ice blocks (M) produced by the ice making unit (18) are stored in the ice storage chamber (12a). Below the ice making unit (18), an ice making water tank (32) equipped with a section (32a) for collecting ice making water not used for making ice blocks in the ice making unit (18) is disposed. An ice storage detector (40) for detecting the ice blocks (M) fully filled in the ice storage chamber (12a) is mounted on the horizontal wall portion (16b) of the ice making water tank (32) located in the rear of the collecting section (32a).
A flow-down-type ice making machine in which ice blocks reliably separate and drop from the lower end of an ice making plate, an ice guiding member can be placed close to the ice making plate, and the amount of ice storage is increased. An ice making section (10) is made up of a pair of ice making plates (12, 12) placed opposed to each other in a substantially vertical position and of evaporation tube (14) provided meandering between the ice making plates (12, 12). The ice guiding member (32) attached to an ice making water tank (22) is placed right under and close to the ice making section (10). The ice guiding member (32) is formed in a reverse V-shaped cross-section and is placed so that the top of the ice guiding member is located in the middle between the back sides of the ice making plates (12, 12). A slope (32a) tilting from the top of the ice guiding member (32) to one side of the top faces below one ice making plate (12), and a slope (32a) tilting from the top of the ice guiding member (32) to the other side of the top faces below the other ice making plate (12). An outwardly projecting lower end projection (20) is formed on each ice making plate (12), at the lower end of its surface facing each ice making region (12) of the ice making plate (12). Because of the presence of the lower end projection (20), an ice block (M) running onto the lower end projection (20) is separated from an ice making surface.
A beverage pouring device having beverage temperature measurement means for measuring the temperature of a beverage contained in a closed beverage container; pressure measurement means provided in gas supply piping for supplying gas from a gas supply source of a predetermined pressure to the beverage container and measuring the pressure of the gas in the beverage container; a pressure regulation valve provided in the gas supply piping and regulating the pressure of the gas supplied to the beverage container; beverage pouring means for pouring the beverage supplied by the pressure of the gas in the beverage container via the beverage supply piping connected to the beverage container; gas flow rate measurement means provided in the beverage supply piping, on the downstream side of the pressure regulation valve, and measuring the flow rate of the gas supplied to the beverage container; calculation means for calculating either the remaining amount of the beverage in the beverage container based on the flow rate of the gas bmeasured by the gas flow rate measurement means or the amount of pouring of the beverage poured from the beverage container by the beverage pouring means; and display means for displaying the remaining amount or pouring amount of the beverage calculated by the calculation means. The pressure regulation valve is opened and closed so that the pressure of the gas in the beverage container is an appropriate pressure calculated according to the temperature measured by the beverage temperature measurement means.
When a predetermined draining time passes (timing T3) after the end (timing T2) of a defrost operation, a precooling operation is started. To start the precooling operation, a start switch (52) of a start circuit (50) of a compressor (23) is closed, energization of a dew condensation preventive heater (48) is simultaneously stopped. Initially, a power supply voltage is applied to the compressor (23) through a start capacitor (53) and an operating capacitor (54), and then a starter (55) is opened in 5 or 6 seconds. Therefore operation using only the operating capacitor (54) is performed. When 30 seconds passes after the start of the compressor (23) (timing T4), energization of the dew condensation preventive heater (48) is resumed. Since the energization of the dew condensation preventive heater (48) is stopped, any voltage drop is correspondingly prevented, and the voltage applied to the compressor (23) is ensured even if the power supply voltage is low. Consequently, the start and the stable operation after the start of the compressor (23) can be reliably performed.
A drain pipe (33) for draining defrost water to the outside is projected from a back side (10A) of a refrigerator body (10), and an evaporation tray (41) with an evaporation heater (60) is attached below the drain pipe (33). The evaporation tray (41) has a box-shaped body section (42) whose back side and upper side are open, and also has a back plate (48) having a flange (49) at its peripheral edge. The flange (49) of the back plate (48) is superposed and welded to an opening edge on the back side of the body section (42), and as a result, the flange (49) has a box shape. A recess (55) is formed by the inner side of the flange (49). The back side of the evaporation tray (41) is engaged in a line contact manner to the back side (10A) of the refrigerator body (10) only at a thin peripheral wall surrounding the recess (55). The presence of the recess (55) forms an air layer (A) between the evaporation tray (41) and the back side (10A) of the refrigerator body (10). Because the air layer (A) functions as a heat insulation layer, heat of the evaporation tray (41) is less likely to be transmitted to the inside of the storage.
A drain pipe (33) for draining defrost water to the outside is projected from a back surface (10A) of a refrigerator body (10), and an evaporation tray (41) is attached below the drain pipe (33). An evaporation heater (60) is supported and installed in the evaporation tray (41) by a bracket (65) attached to an end of an upper surface opening (41A) of the evaporation tray (41). An obstruction plate (80) is formed in a projecting manner on the bracket (65) so as to cover a portion below a drain opening (35) of the drain pipe (33), and the obstruction plate (80) slightly slants downward toward its forward end. Defrost water drained from the drain opening (35) drops and contained in the evaporation tray (41) after colliding with the obstruction plate (80). The heater (60) promotes evaporation of the defrost water to drain it as rising vapor. During the drainage, the vapor is obstructed by the obstruction plate (80) and prevented as much as possible from flowing into the drain pipe (33) from the drain opening (35). That is, backflow of the vapor into the storage is suppressed to prevent the temperature in the storage from unnecessarily rising.
A cooling device is provided with an inverter compressor (23). The set speed of the inverter compressor (23) can be changed in six stages from the first speed to the sixth speed, and the relationship between each set speed and the rotation speed is set so that higher the rotation speed, the greater the difference between the rotation speeds of adjacent stages. Thus, independent of the level of the rotation speed, the degree of an increase in cooling ability of each stage is substantially the same as those of the other stages. When control of the inverter compressor (23) is performed so as to increase or decrease its speed on a stage by stage basis depending on whether the actual degree of temperature fall is greater than a target degree of temperature fall, the amounts of changes in cooling ability can be maintained at almost the same level, and no excess or deficiency of cooling ability occurs. That is, an up-and-down of cooling speed can be limited to a minimum level and control for reducing the temperature in a chamber can be stably performed following predetermined cooling characteristics.
F25D 11/02 - Self-contained movable devices associated with refrigerating machinery, e.g. domestic refrigerators with cooling compartments at different temperatures
F25B 1/00 - Compression machines, plants or systems with non-reversible cycle
56.
COOLING STORAGE COMPARTMENT AND ITS OPERATING METHOD
When the indoor temperature of a freezing compartment (13F) drops below a lower limit temperature TF(OFF) during alternate cooling of R compartment and F compartment, actuation of 旜R independent overcooling prevention control” is requested and the number of revolutions of a compressor (20) is dropped by one stage and then a three-way valve (24) is brought to 旜R side open state” and independent cooling of a refrigeration compartment (13R) is performed. Subsequently, the number of revolutions of a compressor (20) is dropped by one stage every time when 30 sec elapses. When the indoor temperature of the refrigeration compartment (13R) drops below a lower limit temperature TR(OFF), stopping of 旜R independent overcooling prevention control” is requested and transition is made temporarily to independent cooling of the freezing compartment (13F), and after the indoor temperature of the freezing compartment (13F) again drops below the lower limit temperature the compressor (20) is stopped. When transition is made to independent cooling of the refrigeration compartment (13R), the number of revolutions of the compressor (20) is dropped significantly in a short time, thus dropping the cooling capacity significantly.
F25D 11/02 - Self-contained movable devices associated with refrigerating machinery, e.g. domestic refrigerators with cooling compartments at different temperatures
F25B 1/00 - Compression machines, plants or systems with non-reversible cycle
F25B 5/02 - Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
A showcase where an illumination device is placed outside a receiving chamber to enable effective use of the space in the receiving chamber. The inside of an insulated box body (16) having front glass (18) fitted in a front opening (56) is partitioned to form a receiving chamber (52). An upper evaporator (34) is placed in an upper insulating layer (54) of the insulated box body (16) so as to be in contact with a cooling plate (62) defining the upper surface of the receiving chamber (52). Further, an opening (64) is formed in that portion of the cooling plate (62) with which the upper evaporator (34) is not in contact, and a receiving space (66) is formed in that portion of the upper insulating layer (54) to which the opening (64) faces. A holder (78) is placed at the receiving space (66), and inside the holder (78) is received and fixed an LED illumination device (70). The opening (64) is closed by a cover (86) with packing (84) in between, and the inside of the holder (78) is maintained in a sealed state.
F25D 11/00 - Self-contained movable devices associated with refrigerating machinery, e.g. domestic refrigerators
F25D 17/08 - Arrangements for circulating cooling fluidsArrangements for circulating gas, e.g. air, within refrigerated spaces for circulating gas, e.g. by natural convection by forced circulation using ducts
A dishwasher of type where a portion of washing water contained in a washing water tank is replaced with rinsing water at each wash cycle. The dishwasher determines whether a current wash cycle is in the timing with which a processing where an increased amount of detergent is fed is to be performed or in the timing with which a processing where a normal amount of detergent is fed is to be performed (S304). When the processing where an increased amount of detergent is fed is performed according to the result of the determination, the amount of the detergent to be fed is increased (S309). As a result, detergent concentration in washing water can be appropriately adjusted.
A dishwashing machine uses a rod (58) connected at its upper end to a base end of a swing arm (10) and uses compression springs (53, 54) connected to the base end of the swing arm (10) through the rod (58). Even if the compression spring (53, 54) break, elastic force of the compressions springs (53, 54) themselves is kept unchanged and the compression springs (53, 54) are kept supported at the lower end of the rod (58) while being positionally restricted relative to a washing machine body (2). A rapid fall of an opened door (7) does not occur.
During a control cooling operation, data on control cooling operation characteristic is read from a memory and the data is compared to lowering degree of the temperature in the refrigerator actually measured by an in-refrigerator temperature sensor (46). A cooling device is operated so that the in-refrigerator temperature is lowered along a temperature curve stored in advance. If the in-refrigerator temperature is higher than a set temperature by, for example, 7K for 15 minutes, the cooling ability by the cooling device is made higher than the cooling ability based on control of a control operation control device. Even if a door (17) is opened and closed frequently to gradually increase the in-refrigerator temperature, it is rapidly detected so as to suppress the in-refrigerator temperature to the vicinity of the set temperature.
A system for producing water for growth of marine organisms, comprising the filtration step of filtering seawater; the electrolysis step of electrolyzing the filtered seawater to thereby obtain a sterile seawater having its available chlorine concentration reduced to ≤ 10 mg/L; and the available chlorine removing step of removing any available chlorine remaining in the seawater having been sterilized in the electrolysis step within a period of 1 hr.
A projecting portion is provided to a discharge chute, the projecting portion having a substantially horizontal slope portion and a step portion that is connected to an end portion of the slope portion and extends in a downward direction. Ice within an ice storage bin can thus be prevented from spilling out, even when ice becomes trapped between the door and the projecting portion.