A closed variable-frequency heat pump drying device with a heat regenerator includes a variable-frequency compressor, a condenser, a throttling valve, an evaporator, a heat regenerator, a three-way valve, a variable-frequency fan, an air inlet temperature sensor, an air inlet humidity sensor, a drying bin, an air outlet temperature sensor, an air outlet humidity sensor and a controller. The controller regulates frequency of the variable-frequency compressor by comparing magnitudes of actual and set air inlet temperatures; a ratio of a straight-through air volume to a regenerated air volume of the three-way valve by comparing magnitudes of actual and set air inlet humidity; and frequency of the variable-frequency fan by comparing magnitudes of actual and set air humidity difference and magnitudes of actual and set air temperature difference of medium air entering and exiting the drying bin.
A harmonic drive mechanism of a wave generator, including a first bearing set, an input shaft, a left end cover, a second bearing set, an output shaft, a key, a bolt assembly, a vibratory hydraulic wave generator assembly, a rigid internal gear sleeve and a flexible external gear. The input shaft which is rotatable is provided on the left end cover through the first bearing set. A part of the input shaft and the flexible external gear are located in the rigid internal gear sleeve. The output shaft which is rotatable is provided on the rigid internal gear sleeve through the second bearing set. An end of the output shaft is connected to the flexible external gear via a key. The vibratory hydraulic wave generator assembly includes a casing, a vibrating plate, a backing plate and a check valve which are located in the flexible external gear.
A harmonic wave drive mechanism of a wave generator, the harmonic wave drive mechanism comprising a first bearing set (1), an input shaft (2), a left end cover (3), a second bearing set (10), an output shaft (11), a key (12), a bolt assembly (13), a harmonic wave generator, a rigid inner gear sleeve (4) and a flexible outer gear (5); the input shaft (2) is rotatably mounted to the left end cover (3) by means of the first bearing set (1), and the right portion of the input shaft (2) and the flexible outer gear (5) are both located within the rigid inner gear sleeve (4); the output shaft (11) is rotatably mounted to the rigid inner gear sleeve (4) by means of the second bearing set (10), and the left end of the output shaft (11) is connected to the flexible outer gear (5) by means of the key (12); the harmonic wave generator comprises a wave shell (6), a vibration plate (7), a cushion plate (8) and a one-way valve (9) which are located within the flexible outer gear (5), and the wave shell (6) and the flexible outer gear (5) are clearance-fitted and movable relative to each other; and the vibration plate (7) can generate high-frequency vibration in the thickness direction after being energized. In the novel harmonic wave drive mechanism, a flexible bearing is omitted, prolonging the overall service life.
A porous ultrasonic bearing includes a ring, a high-strength outer casing, a bearing bushing and a vibration collar. The high-strength outer casing is sheathed on the bearing bushing, and a group of radial holes that penetrate are provided on the bearing bushing. The vibration collar is arranged between the high-strength outer casing and the bearing bushing. The outer cylindrical surface of the vibration collar is fixedly connected to the inner hole of the high-strength outer casing. A gap is provided between the inner hole of the vibration collar and the outer cylindrical surface of the bearing bushing. The vibration collar radially vibrates at high frequency. A high-strength lubricating oil film is formed between the inner hole of the bearing bushing and the shaft, so that the friction between the inner hole of the bearing bushing and the shaft is reduced.
A complex harmonic transmission device capable of regulating an angle in real time, comprising a first wave generator (2), a second wave generator (9), a first flexible external gear (4), a second flexible external gear (12), a first rigid internal gear (3), a second rigid internal gear (11), a first spherical gear (7), a first output shaft (8), a second output shaft (14), an input shaft (17), and a second gear structure (18). The first wave generator (2) and the second wave generator (9) are respectively provided in the first flexible external gear (4) and the second flexible external gear (12). The first flexible external gear (4) and the second flexible external gear (12) are respectively provided in the first rigid internal gear (3) and the second rigid internal gear (11). The first output shaft (8) is connected to the first flexible external gear (4). The first spherical gear (7) is fixed to the first output shaft (8). The second output shaft (14) is fixedly connected to the second flexible external gear (12). The input shaft (17) is fixedly connected to the second wave generator (9). The second gear structure (18) is fixedly provided on the input shaft (17). The first spherical gear (7) is meshed with the second gear structure (18). Two harmonic reducers can perform space pitch and deflection for a certain angle.
The invention relates to a dynamic optimization and control method of the frequency of a frequency conversion enhanced vapor injection heat-pump water heater. The frequency conversion enhanced vapor injection heat-pump water heater comprises a frequency conversion compressor (1), an exhaust temperature sensor controller (2), a water tank temperature sensor (4), a water tank (5), a condenser (6), an auxiliary electronic expansion valve (7), an economizer (8), a main electronic expansion valve (9), an evaporator (10) and an outdoor temperature sensor (11). The dynamic optimization and control method are characterized in that in the whole operation process of the heat-pump water heater, the work frequency of the frequency conversion compressor (1) is dynamically optimized and adjusted, meanwhile, the opening degrees of the main electronic expansion valve (9) and the auxiliary electronic expansion valve (7) of a refrigeration system are correspondingly controlled, and the total energy consumption in the whole operation process of the heat-pump water heater is minimum. The dynamic optimization and control method have the main beneficial effects that the work frequency of the frequency conversion compressor (1) is dynamically optimized in the whole operation process of the frequency conversion enhanced vapor injection heat-pump water heater, meanwhile, the opening degrees of the main electronic expansion valve (9) and the auxiliary electronic expansion valve (7) are controlled with the optimal energy efficiency ratio as the target, and the total energy consumption in the whole operation process is minimum.
A method for dynamic optimizing and controlling the frequency of a two-stage variable frequency two-stage compression heat pump water heater, comprising a low pressure stage variable frequency compressor (1), a low pressure stage compressor exhaust gas temperature sensor (2), a high pressure stage variable frequency compressor (3), a high pressure stage compressor exhaust gas temperature sensor (4), a controller (5), a water tank sensor (6), a water storage tank (7), a condenser (8), a high pressure stage electric expansion valve (9), an intermediate cooler temperature sensor (10), an intermediate cooler (11), a low pressure stage electric expansion valve (12), an evaporator (13) and an outdoor temperature sensor (14); the heat pump water heater dynamically optimizes and regulates the working frequency of the low pressure stage variable frequency compressor (1) and the high pressure stage variable frequency compressor (3) during the entire operation process so as to to minimize the total energy consumption of the heat pump water heater during the entire operation process.
A dynamic heating frequency optimization and control method for a two-stage variable-frequency and two-stage compression heat pump water heater, for optimizing and adjusting, throughout the operation of dynamic heating, the operating frequencies of a low-pressure stage variable-frequency compressor and a high-pressure stage variable-frequency compressor, segmenting and setting the operating frequency of the low-pressure stage compressor (1), enabling the segmented operating frequencies of the low-pressure stage variable-frequency compressor (1) in various temperature ranges to be distributed in a manner of arithmetic progression, such that the total energy consumption of the heat pump water heater throughout the operation is minimized. When the actual operation condition of the heat pump water heater deviates from a reference operation condition, the segmented operation frequency of the low-pressure stage variable-frequency compressor (1) corresponding to each temperature range of a water tank (7) is corrected according to the actual outdoor temperature.
F25B 7/00 - Machines, installations ou systèmes à compression fonctionnant en cascade, c.-à-d. avec plusieurs circuits, l'évaporateur d'un circuit refroidissant le condenseur du circuit suivant
F25B 30/02 - Pompes à chaleur du type à compression
F24H 9/20 - Disposition ou montage des dispositifs de commande ou de sécurité
9.
FREQUENCY OPTIMIZATION METHOD FOR DYNAMIC HEATING COMPRESSOR OF VARIABLE FREQUENCY HEAT PUMP WATER HEATER
Disclosed is a frequency optimization method for a dynamic heating compressor of a variable frequency heat pump water heater. The variable frequency heat pump water heater comprises a variable frequency compressor (1), a gas-liquid separator (2), an evaporator (3), a throttling valve (4), an outdoor environment temperature sensor (5), a controller (6), a water tank temperature sensor (7), a water tank (8), a condenser (9), a four-way valve (10) and an exhaust gas temperature sensor (11). The variable frequency heat pump water heater performs dynamic heating operation, i.e., while a user uses hot water, the heat pump water heater performs heating operation; in the entire dynamic heating process, the working frequency of the compressor (1) is optimized-adjusted; the segmented working frequencies of the compressor (1) at each temperature section are distributed in an arithmetic progression according to the segmenting condition of temperature differences of water temperature in the water tank (8), such that the total energy consumption of the heat pump water heater is minimum in the entire dynamic heating process.
A novel ultrasonic thread pair. A nut body (1) or a screw (3) is made of a piezoelectric material, or a magnetostrictive material, or other materials that can produce high-frequency vibration. During work, the nut body or the screw can directly radially vibrate at a high frequency. According to the thread pair, friction between contact surfaces can be reduced, the transmission accuracy can be improved, the service life can be prolonged, and the using costs can be reduced.
A porous ultrasonic bearing, comprising a ring (1), a high-strength housing (2), and a bearing bushing (4). The high-strength housing (2) is sleeved on the bearing bushing (4). A through radial hole group (41) is formed on the bearing bushing (4). The porous ultrasonic bearing further comprises a vibrating sleeve ring (3). The vibrating sleeve ring (3) is disposed between the high-strength housing (2) and the bearing bushing (4). The outer cylindrical surface of the vibrating sleeve ring (3) is fixedly attached in the inner hole of the high-strength housing (2). A gap is formed between the inner hole of the vibrating sleeve ring (3) and the outer cylindrical surface of the bearing bushing (4). The vibrating sleeve ring (3) can radially vibrate at a high frequency. The porous ultrasonic bearing is simple in structure and can vibrate at a high frequency; friction between contact surfaces of each transmission pair is greatly reduced; thus, the transmission friction of the bearing is reduced, the motion transmission accuracy is improved, the service life is prolonged, and the manufacturing and using costs are reduced.
A porous ultrasonic transmission pair, comprising a left ring (1), a high-strength outer sleeve (2), a guide rail sleeve (4), and a right ring (5). The high-strength outer sleeve (2) is sleeved on the guide rail sleeve (4). The left ring (1) is fixedly disposed between the high-strength outer sleeve (2) and the left end of the guide rail sleeve (4). The right ring (5) is fixedly disposed between the high-strength outer sleeve (2) and the right end of the guide rail sleeve (4). The guide rail sleeve (4) is provided with a through radial hole group (41) so that the exterior of the guide rail sleeve (4) is communicated with the inner hole. A vibrating sleeve ring (3) is provided between the high-strength outer sleeve (2) and the guide rail sleeve (4). A gap is formed between the inner hole of the vibrating sleeve ring (3) and the exterior of the guide rail sleeve (4). The exterior of the vibrating sleeve ring (3) is fixedly attached in the inner hole of the high-strength outer sleeve (2). The vibrating sleeve ring (3) can radially vibrate at a high frequency. The porous ultrasonic transmission pair can vibrate at a high frequency during work to reduce friction between a thread pair, a spline pair, and a linear guide rail pair, and thus, the durability and the motion transmission accuracy are improved, the service life is prolonged, and the manufacturing and using costs are reduced.
The present invention relates to an injection molding apparatus with a spherical rotor. The injection molding apparatus includes an injection oil cylinder, an injection base frame, a motor, a transmission mechanism, bases, radial thrust bearings, a hopper, a machine barrel, an electric heater, a moving oil cylinder, a gear and a plunger. The apparatus further includes a plasticizing rotor and the plasticizing rotor includes a hemispherical rotor and a cylinder integrated with the hemispherical rotor. Continuous external thread grooves are provided on the hemispherical rotor. The machine barrel includes a hemispherical plasticizing cavity and an injection barrel. The hemispherical rotor is located in the hemispherical plasticizing cavity and is rotatable. The hopper is installed on the plasticizing cavity. The apparatus with the spherical rotor has the advantages of strong plasticizing, pulverizing and extruding ability, good quality of molded products and the like.
B29C 45/53 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans le moule utilisant des pilons ou des pistons d'injection
B29C 45/54 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans le moule utilisant des pilons ou des pistons d'injection et des vis de plastification
An internal combustion engine cylinder-based purification structure, comprising multiple combustion chambers, pistons, and cylinder covers. A spiral intake passage (1), an exhaust passage (3), and a fuel injector mounting hole (2) are provided on the cylinder covers. The gas inlet of the spiral intake passage (1) is in communication with the combustion chambers separately. A catalytic coating is provided on the tops of the pistons, the inner walls of the combustion chambers, the exhaust passage (3) of the cylinder covers, and the inner walls of the cylinder covers. The coating comprises one or more of precious metals, i.e., platinum, rhodium, and palladium. The internal combustion engine cylinder-based purification structure is made of a porous ceramic material covered with a precious metal such as platinum, rhodium, or palladium, uses a precious metal such as platinum, rhodium, or palladium as a catalyst, and also oxidizes and restores CO, HC, NOx, and residual polycyclic aromatic hydrocarbons in the exhaust gas so as to convert same into innoxious substances, i.e., CO2, H2O, and N2. Emission of noxious gases such as CO, HC, and NOx is effectively reduced, and the contents of the noxious gases and PM2.5 particles in the exhaust gas are reduced.
An automobile exhaust gas emission system, comprising an engine (1), an exhaust gas purifier (6), an engine intake passage (4), and an exhaust passage (5). The engine (1) comprises combustion chambers, pistons, and cylinder covers. A precious metal catalyst coating is provided in the engine (1). A first purifier (7) is provided at a downstream side of the exhaust passage (5). The exhaust gas purifier (6) is connected to the tail end of the exhaust passage (5). The automobile exhaust gas emission system uses a precious metal such as platinum, rhodium, or palladium as a catalyst, and also oxidizes and restores CO, HC, NOx, and residual polycyclic aromatic hydrocarbons in the exhaust gas so as to convert same into innoxious substances, i.e., CO2, H2O, and N2. Emission of noxious gases such as CO, HC, and NOx is effectively reduced, and the contents of the noxious gases and PM2.5 particles in the exhaust gas are reduced.
F02M 27/02 - Appareils pour traiter l'air comburant, le combustible ou le mélange air-combustible par catalyseurs, moyens électriques, magnétisme, rayonnement, ondes sonores ou moyens analogues par catalyseurs
F01N 3/10 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
16.
PREDICTIVE CONTROL METHOD FOR HEAT PUMP AND SOLAR-POWERED WATER HEATER COMBINATION SYSTEM
A predictive control method for a heat pump and solar-powered water heater combination system. The predictive control method is characterized by the steps of: established is a function for fitting a temperature increase ΔT of a water storage tank over time t, instantaneous amount of solar radiation e, average outdoor ambient temperature ThP, and the initial temperature TC of the water tank; by means of the described fitting method, meteorological conditions of a same period are fitted with the temperature increase ΔT curve to produce a set of temperature increase ΔT fitted curves in one different meteorological condition; because the actual temperature increase curve cannot perfectly fit the finite number of fitted curves in the set A, an actual predicted temperature increase curve needs to be revised to produce a final predicted temperature increase ΔT'; the sum of the final predicted temperature increase ΔT' and the initial water temperature TC is a predicted final temperature TZ of the water tank, and the difference ΔT" between a user-set water temperature TS and the predicted final temperature TZ of the water tank is the amount of heat for which auxiliary heating from a heat pump water heater is required. The advantages being: increased accuracy in predicting an effective heat gain from solar energy, increased energy efficiency ratio in periods during which a heat pump is running, and significant systemic energy saving effects.
Provided is an energy-saving control method for an adaptive variable-frequency heat pump hot water heating system, comprising the following steps: establishing a basic functional expression involving a heat pump water supply calculation temperature Tgj, an indoor set temperature Tsd, and an outdoor ambient temperature Tw, performing a determination on the basis of a temperature difference between the heat pump water supply calculation temperature Tgj and an actual water return temperature Ths, and correcting the heat pump water supply calculation temperature Tgj on the basis of the basic functional expression; correcting again the heat pump water supply calculation temperature Tgj on the basis of a first corrected functional expression according to a deviation between a stabilized actual room air temperature Tns and the indoor set temperature Tsd; and adjusting a rotating speed of a compressor of a variable-frequency heat pump water heater according to a difference value between an actual water supply temperature Tgs and the heat pump water supply calculation temperature Tgi obtained through a second corrected functional expression, such that the actual water supply calculation temperature Tgs and the heat pump water supply calculation temperature Tgi tend to be consistent. The energy-saving control method is advantageous in that heat preservation characteristics of different buildings and differences in arrangement of hot water coils are taken into full consideration, and a water supply calculation temperature is determined and corrected during operation, so that the water supply calculation temperature is more accurate, achieving a more obvious energy-saving effect.
An operation fault determination method for an air conditioner in a remote control manner, characterised in that fault determination is: by means of experiments, when a refrigerant of an air conditioner is of a standard charging amount or 95% of the standard charging amount, under different indoor temperatures T3, different outdoor environment temperatures T7 and high and low air volumes of an indoor unit fan (7), during refrigeration and heating operations of the air conditioner, data of first and second indoor refrigerant temperatures T1 and T2, an indoor airside air outlet temperature T4, first and second outdoor refrigerant temperatures T5 and T6 and outdoor airside air outlet temperature T8 is obtained. A control system (8) automatically adjusts the air volume of the indoor unit fan (7) to be in a high air volume state at every period of operation. The control system (8) compares the obtained data with a built-in experiment database, performs preliminary determination, and transmits, in time, a fault which may occur to maintenance personnel via a wireless network, and the maintenance personnel changes an operation mode according to uploaded data in a remote control manner, acquires new operation data, and performs secondary determination on the refrigeration and heating operations of the air conditioner. The advantages of the present invention are that a fault of an air conditioner is determined earlier, the use requirement of a user is better met, energy-saving operation of the air conditioner is achieved, etc.
A method for intelligently controlling operation of a remotely-controlled cooling and heating air conditioner, comprising: a control system determining an advance starting time of an air conditioner according to a specific functional expression of changes of an outdoor environment temperature Tw along with a time t of day in summer or winter, a specific functional expression of changes of a room temperature Tn along with the time t of day, a functional expression of changes of refrigerating amount or heating amount of a remotely-controlled cooling and heating air conditioner along with the outdoor environment temperature Tw and the room temperature Tn, a functional expression of the total refrigerating amount or total heating amount needed from the beginning of starting to a set time ts and detection of the current outdoor environment temperature Tw and the room temperature Tn; and when a difference value between the room temperature Tn and a set room temperature Tns is from -1°C to 1°C, automatically determining actual start and stop control temperature of the air conditioner according to a functional expression of changes of an equivalent temperature Td1 or Td2 along with the room temperature Tn and a relative room air humidity ф in summer or winter. The advantages of the method are: under the condition that the comfort is consistent, the optimum time of advance starting of an air conditioner can be determined, and an energy-saving operation of the air conditioner is achieved.
An energy-saving control method for a vacuum freezing and drying combined device for a cascaded heat pump comprises the steps of: 1, according to requirements of a food drying technology, determining the temperature T1 of a heating medium entering heating division plates (8) of a drying chamber; 2, according to vacuum degree requirements of the combined device and thickness changes of a frost layer on the surface of a water catcher (12) in the operation process of the combined device, determining a functional expression of the change of the evaporation temperature T5 of the water catcher (12) along with operation time t in the operation process of the combined device; 3, according to the evaporation temperature T5 of the water catcher (12) in a low-pressure-stage refrigeration system and the condensation temperature T2 of a high-pressure-stage condenser (7), determining the high-pressure-stage evaporation temperature T3 of a condensation evaporator (10), and determining a functional expression of the change of the high-pressure-stage evaporation temperature T3 along with the evaporation temperature T5 and the condensation temperature T2; and 4, according to the functional expression of the evaporation temperature T5 of the water catcher (12) changing along with the operation time t, controlling the high-pressure-stage evaporation temperature T3 by adjusting the opening degree of a high-pressure-stage throttling valve and adjusting the rotation speed of a high-pressure-stage compressor. The method has the advantages: the evaporation temperature of the low-pressure-stage water catcher (12) can be dynamically adjusted according to the thickness changes of the frost on the surface of the water catcher (12), and the cascaded refrigeration system saves energy in operation.
An energy-saving control method for a vacuum freezing and drying combined device for a double-stage compression heat pump comprises the steps of: according to requirements of a food drying technology, determining the temperature T1 of a heating medium entering heating division plates (8) of a drying chamber; according to vacuum degree requirements of the combined device and changes of the thickness of a frost layer on the surface of a water catcher (12) in the operation process of the combined device, determining a functional expression of the change of the evaporation temperature T4 of the water catcher (12) along with an operation time t during the operation process of the combined device; according to the evaporation temperature T4 of the water catcher (12) in a low-pressure-stage refrigeration system and a condensing temperature T2 of a high-pressure-stage condenser (7), determining an optimal intermediate temperature T3 of an intercooler (10); according to the functional expression of the change of the evaporation temperature T4 of the water catcher (12) with the operation time t, achieving the temperature by adjusting the opening degree of a low-pressure-stage throttling valve (11) and the rotation speed of a low-pressure-stage compressor (2); and according to the calculation of a functional expression, determining the optimal intermediate temperature T3 of the intercooler (10), and achieving the temperature by adjusting the opening degree of a high-pressure-stage throttling valve (9) and the rotation speed of a high-pressure-stage compressor (3). The advantages are as follows: the heat supply temperature and heat of the drying chamber can be adjusted, the optimal evaporation temperature of the water catcher (12) can be determined, and the optimal intermediate temperature of the intercooler (10) can be determined, and the combined device saves energy in operation.
F26B 5/06 - Procédés de séchage d'un matériau solide ou d'objets n'impliquant pas l'utilisation de chaleur par évaporation ou sublimation de l'humidité sous une pression réduite, p. ex. sous vide le procédé impliquant la congélation
An injection molding apparatus having a spherical rotor, comprising an injection cylinder (1), an injection mount (2), a motor (3), a transmission mechanism (4), a seat (5), a centripetal thrust bearing (6), a hopper (7), a machine barrel (8), an electric heater (10), a movable cylinder (13), a gear (14), and a plunger (15). A plastic rotor (9) is further comprised. The plastic rotor (9) comprises a hemispherical rotor (91) and a cylinder (92) that is integrated with the hemispherical rotor (91); the hemispherical rotor (91) is provided with a consecutive outer thread groove (911); the machine barrel (8) comprises a hemispherical plastic cavity (81) and an injection barrel (82); the hemispherical rotor (91) is located in the hemispherical plastic cavity (81) and is rotatable; the hopper (7) is installed on the plastic cavity (81); the left end of the outer thread groove (911) is in communication with the hopper (7); the right end of the outer thread groove (911) is in communication with the injection barrel (82); the plunger (15) is located in the center hole of the hemispherical rotor (91) and the cylinder (92) and in the injection barrel (82), and may be axially moved; a vibration means (11) is installed between the plunger (15) and a push rod of the injection cylinder (1); the plunger (15) is in clearance fit with the injection barrel (82).
B29C 45/54 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans le moule utilisant des pilons ou des pistons d'injection et des vis de plastification
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