4700results about "Compressor" patented technology

To provide a technique for suppressing influences caused by the presence of a space communicating in a radial direction in a protruding portion, which protrudes from a stator core, in a stator coil.SOLUTION: A compressor 100 comprises a compression mechanism part 120 and a motor 200 which are stored in a sealed container 110. A stator 300 of the motor 200 includes a stator coil 340 wound around a plurality of teeth of a stator core 310. The stator coil 340 includes a first protruding portion 340A and a second protruding portion 340B protruding from the stator core 310 to a first side and a second side in an axial direction. At least outside of the first protruding portion 340A, a first enclosure wall 350 is provided which extends without a gap in the axial direction and a circumferential direction.SELECTED DRAWING: Figure 1

Disclosed is a screw compressor (100), comprising a screw compressor housing (101), a discharge cavity (113), at least one silencing channel, and at least one adjustment piston, wherein the discharge cavity (113) is defined by at least one part of the screw compressor housing (101); the at least one part of the screw compressor housing (101) defining the discharge cavity (113) forms a wall of the discharge cavity (113); at least one hole is provided in the wall of the discharge cavity (113); the at least one adjustment piston can be inserted into the at least one hole and move therein; the at least one silencing channel is formed by the at least one hole and the at least one adjustment piston, and the at least one silencing channel is in fluid communication with the discharge cavity (113); and the position of the at least one adjustment piston in the at least one hole determines the silencing length of the at least one silencing channel.

The variable-frequency heat recovery system comprises a compressor unit, three heat exchangers, a variable-frequency driving module and a liquid storage device, the compressor unit can be connected with any two heat exchangers to form a refrigerant circulation loop, and an inlet pipe of the liquid storage device is connected to the outlet side of a condenser of the refrigerant circulation loop; the variable frequency driving module is provided with a heat dissipation pipeline, and the heat dissipation pipeline is connected with an inlet pipe of the liquid storage device in series so that refrigerants conveyed to the liquid storage device can pass through the heat dissipation pipeline. According to the heat recovery system, the pipeline connecting structure in the system is designed, the refrigerant before throttling is adopted to cool the variable frequency driving module, the cooling effect of the variable frequency driving module in different modes is ensured, and the reliability of the heat recovery system is improved.

The invention discloses a temperature swing adsorption helium low-temperature purification system which comprises a vacuum cold box, and a first-stage dividing wall heat exchanger, a liquid cold medium Dewar, a high-temperature area adsorption unit, a second-stage dividing wall heat exchanger, a cold head heat exchanger and a low-temperature area adsorption unit are sequentially connected in the vacuum cold box in the gas transmission direction. Wherein the input end of the first-stage dividing wall heat exchanger is connected with the outside through a pipeline, and is used for introducing crude helium; the high-temperature area adsorption unit is used for adsorbing impurity gas with the boiling point temperature being greater than or equal to 77K in the crude helium, and the low-temperature area adsorption unit is used for adsorbing impurity gas with the boiling point temperature being 20K-30K in the crude helium, so that high-purity helium is obtained. According to the invention, not only can high-flow high-component impurity gas with the boiling point of 77K or above be treated, but also high-flow high-component impurity gas with the boiling point of 30K or below can be treated, and high-flow multi-component high-concentration industrial production working conditions can be better matched by adopting physical adsorption of the high-temperature and low-temperature region adsorbents.

The invention relates to the field of air conditioner control, and provides a variable frequency air conditioner outdoor alternating current motor overvoltage control method and system.The control method comprises the steps that the temperature of a compressor, axial temperature distribution data of an outer coil pipe, the temperature of an outer fan and current opening parameters of an electronic expansion valve are obtained in real time; when it is detected that the power supply voltage exceeds a preset threshold value, a compressor frequency correction coefficient is dynamically generated based on gradient change characteristics of axial temperature distribution data of the outer coil pipe, and meanwhile the following sub-steps are executed: according to the difference value of the compressor temperature and the outer fan temperature, the compressor frequency correction coefficient is combined; executing first frequency reduction operation to reduce the operation frequency of the compressor, and adjusting the opening degree of the electronic expansion valve; based on the concentration ratio of the high-temperature area of the outer coil pipe, an outer fan is controlled to be switched in a multi-stage rotating speed mode; and when it is detected that the temperature rise rate of the highest temperature point of the inner coil pipe and the outer coil pipe exceeds the critical value in two continuous periods, linkage adjustment of second frequency reduction operation and electronic expansion valve opening compensation is triggered.

The multi-compressor refrigeration system comprising a controller and a multi-compressor device including at least three compressors which are coupled in parallel, each compressor equipped with an oil sump and an oil level detection device, the compressors divided into two groups each including at least one compressor; suction fittings of the compressors that are fluidly connected by a common suction line and oil sumps that are fluidly connected by a common oil equalization line. The multi-compressor device includes an oil pumping device located in the common oil equalization line and between the two groups, and at least one valve located in the common oil equalization line and configured to control an oil flow between the oil pumping device and at least one compressor of a group associated with the at least one valve.

The present invention relates to an automatic viscosity control system and method for food products dispensed from frozen beverage and soft-serve ice cream equipment. A mixing cylinder includes an auger interconnected with an auger motor. A refrigeration system chills the food product in the mixing cylinder to a predetermined frozen malleable consistency. A motor sensor measures amperage draw or torque of the auger motor resultant from resistance of rotating the auger through the food product. By transitioning between starting or speeding up a compressor when the amperage draw or the torque of the auger motor is below a predetermined high motor performance setting, and slowing or stopping the compressor when the amperage draw or the torque of the auger motor is between a predetermined low motor performance setting and the predetermined high motor performance setting the viscosity of the food product is automatically controlled.

A cooling system includes a liquid loop, a vapor compression loop, and a heat exchanger in fluid communication with each of the liquid loop and the vapor compression cycle loop. The liquid loop includes a cold sink for cooling a heat load. The vapor compression cycle loop is fluidly coupled to the liquid loop by a separator, which is configured to separate a two-phase form of a working fluid received from the cold sink into a vapor form of the working fluid and a liquid form of the working fluid.

The invention discloses a motor, a compressor and refrigeration equipment, and relates to the technical field of refrigeration equipment, two end points on the bottom wall of the same magnetism adjusting groove are respectively a point C and a point D, the arc length of the shortest arc between the point C and the point D and taking the circle center of a rotor punching sheet as the circle center is Sr, the number of poles of a rotor is 2P, the included angle between the first groove wall and the center line of the magnetic steel groove of the corresponding group is alpha, the average angle number of each pole of the rotor is beta, the two end points of the two ends of the side wall of the side, facing the air gap, of the tooth shoe part are a point A and a point B respectively, the arc length of the shortest arc, with the circle center of the stator as the circle center, between the point A and the point B is St, 1.28 mm < = 1.56 mm, and 0.4 degree < = 1.56 mm. According to the technical scheme provided by the invention, the torque ripple of the motor is reduced, the noise of the motor is reduced, and the energy efficiency of the motor is improved.

The invention discloses an energy-saving type magnetic suspension centrifugal water chilling unit, and relates to the technical field of refrigeration, the energy-saving type magnetic suspension centrifugal water chilling unit comprises a magnetic suspension compressor, a variable-diameter throttling mechanism and a heat exchange system, the heat exchange system is fixedly installed on the side face of the outer wall of the magnetic suspension compressor, and the variable-diameter throttling mechanism is fixedly installed on the side face of the outer wall of the heat exchange system; an outlet of the magnetic suspension compressor is directly connected with the heat exchange system through a pipeline, and the reducing throttling mechanism is connected with the heat exchange system through a pipeline. The front-stage closed impeller and the rear-stage semi-open impeller are coaxially connected in series, efficient compression without mechanical contact and oil lubrication is achieved, the problems that a centrifugal compressor is high in energy consumption and large in vibration due to mechanical friction are solved, and the energy efficiency ratio of a unit is effectively increased.

A stator of a rotating electric machine includes: a stator core including a yoke; an insulator having a plurality of insulator extension portions and a plurality of insulator inner walls each extending from the corresponding insulator extension portion; and a cover. The cover has an insertion plate extending in an axial direction of the yoke. The insulator inner walls adjacent to each other cooperate to have a pair of space-forming walls. One of the pair of space-forming walls is spaced from the other of the pair of space-forming walls in a circumferential direction of the yoke, and cooperates with the other of the pair of space-forming walls to define an insertion space into which the insertion plate is inserted. The insertion plate is configured to come into contact with the pair of space-forming walls with the insertion plate inserted into the insertion space.

The invention relates to a cold compressor and a dilution refrigerator adopting the cold compressor, the cold compressor comprises a driving part, an air cylinder and a piston, and further comprises a precooling refrigerator, the precooling refrigerator is connected with the air cylinder, and the compressor is precooled through the precooling refrigerator. The cold compressor can be used on a dilution refrigerating machine or a space dilution refrigerating machine, and compared with the prior art, the refrigerating machine is adopted for cooling the compressor, so that the compressor becomes the cold compressor, and therefore it is ensured that helium-3 is compressed at the low temperature.

A rotating electrical machine includes a rotor configured to be rotatable around a rotation axis of the rotor, and a stator facing the rotor in a radial direction. The stator includes a stator iron core having a first core portion, a second core portion facing the first core portion in the radial direction, an elastically deformable member between the first core portion and the second core portion, and a tooth provided opposite to the second core portion with respect to the first core portion and extending radially from the first core portion. A winding is wound around the tooth of the stator iron core. The first core portion, the second core portion, the elastically deformable member, and the tooth are integrated together A mechanism reduces an axial displacement of the tooth during winding of the winding around the tooth.

The invention provides a control method of a compressor system, the compressor system and an air conditioner, and according to the control method of the compressor system, after the power demand change is detected, the target compressor is intelligently determined and started by combining the current power demand data and the power range data of each compressor. And then, after the target compressor operates for a period of time, real-time operation data of the target compressor are obtained, the target compressor is adjusted according to a preset control strategy, and load balance between the compressors is achieved. According to the method, the running state of the compressor is dynamically optimized by comprehensively utilizing real-time and historical running data, excessive use and frequent start and stop of some compressors are avoided, mechanical abrasion and energy consumption are remarkably reduced, and therefore the service life of the whole compressor system is effectively prolonged.

An E-compressor for an AC system of an electric vehicle provides a cooling flow of refrigerant via a fixed orifice disposed internally within the housing assembly of the compressor. A portion of the pressurized refrigerant to be supplied to the AC system is bled off through the fixed orifice and provided to a cooling flow path that directs the bleed portion into the bearing areas of the compressor.

The invention discloses a motor, a compressor and refrigeration equipment, and relates to the technical field of permanent magnet motors, stator teeth and stator slots on the inner circumference of a stator core are alternately distributed, windings are arranged in the stator slots, the number of the stator slots is Q, the diameter of the maximum outer circle contour of the stator core is D1, the diameter of the maximum circle contour defined by the slot bottoms of the plurality of stator slots is D2, the diameter of the minimum inner circle outline of the stator core is D3, the rotor is rotatably mounted in the stator, the number of pole pairs of the rotor is P, and GCD (Q, P) * (D1-D2) / 2) / ((D1-D3) / 2) is greater than or equal to 1.4 and less than or equal to 2.6, and ((D2-D3) / 2) / (D3 / 2) is greater than or equal to 0.3 and less than or equal to 0.42, and GCD (Q, P) is the largest common divisor of Q and P. The technical scheme provided by the invention aims at balancing the rigidity and temperature of the stator, and ensuring the low-noise operation of the motor and the operation reliability of the motor at the same time.

A method for managing oil in a running multi-compressor refrigeration system including a controller and a multi-compressor device, includes monitoring an oil level in the oil sump of each compressor through the respective oil level detection device; detecting that a lack of oil situation occurs in a running compressor, if the oil level in said running compressor reaches a predetermined threshold condition; performing an oil managing action if a lack of oil situation is detected for a running compressor, the oil managing action being based on a changing of ON / OFF configurations of the compressors in the multi-compressor device and including performing an oil balancing action, if more than a half of the total number of compressors are running, or performing an oil returning action, if a half or less of the total number of compressors are running.

A housing (50) partitions an interior of a casing (20) into a first space (23) into which a refrigerant compressed by a compression mechanism (40) is discharged and a second space (24) provided between the housing (50) and a motor (30). The housing (50) has a discharge flow path (80) through which the refrigerant is discharged from the first space (23) toward the second space (24). The discharge flow path (80) includes an inclined flow path (81) that extends while inclining toward downstream in the direction of rotation of the motor (30).

One purpose of the present invention is to provide a combination device that contributes to the miniaturization of vehicle air conditioning systems and the like, and that can ensure the cooling capacity (heat dissipation) of a switching element that converts direct current to alternating current. The combination device (1) with a refrigerant compression function and a heating medium function comprises: a first housing (2A) that accommodates a compression mechanism (3) for compressing a refrigerant and an electric motor (4) for driving the compression mechanism (3) in series; a second housing (2B) that accommodates the electric heater (5) for heating a heating medium; and a third housing (2C) that accommodates the motor drive circuit (20) and the heater control circuit (30).The first power switching elements (Q1 to Q6) of the motor drive circuit (20) are arranged in the third housing (2C) such that they can be cooled by a refrigerant flowing from the refrigerant inlet (8) into the first housing (2A) and by a heating medium flowing from the heating medium inlet (10) into the second housing (2B).

A magnetic bearing system (100) includes a rotary shaft (101) and a magnetic bearing (105, 107, 130) having an electromagnet coil (106, 108, 108B, 135, 136). One end of the electromagnet coil (106, 108, 108B, 135, 136) is connected to the neutral point of a first multi-phase winding (113, 115, 123, 125, 173, 181) having at least three or more phases.

The present disclosure relates to a refrigeration system comprising: a compressor (1); an air outlet (2A) of the evaporator (2) is communicated with the air suction port (1A) of the compressor (1) through an air suction pipeline (10); an air inlet (3A) of the oil separator (3) is communicated with an exhaust port (1B) of the compressor (1), an oil outlet (3B) of the oil separator (3) is communicated with the compressor (1) through a first oil return pipeline (20), and a pump (11) is arranged on the first oil return pipeline (20); a liquid inlet (4A) of the automatic oil return device (4) is communicated with the evaporator (2) through a liquid taking pipeline (60) and used for obtaining the liquid refrigerant in the evaporator (2), an oil outlet (4B) of the automatic oil return device (4) is communicated with the air suction pipeline (10) through a second oil return pipeline (30), and at least one of the liquid taking pipeline (60) and the second oil return pipeline (30) is provided with a first on-off valve (18).

A compressor according to an embodiment includes: a cylinder; a piston configured to be reciprocable in the cylinder; a suction space capable of communicating with a working chamber formed by the cylinder and the piston; a discharge space capable of communicating with the working chamber; a partition wall portion disposed so as to surround the working chamber, and separating the suction space and the discharge space; and a cooling medium path formed in the partition wall portion.

A test chamber and a method for conditioning air in a test space thereof for receiving test material, the test space being configured to be sealed from an environment and temperature-insulated, a cooling device of a temperature control device of the test chamber, which comprises a cooling circuit with carbon dioxide as a refrigerant, a heat exchanger in the test space, a low-pressure compressor, and a high-pressure compressor, a gas cooler, and an expansion valve downstream of the low-pressure compressor in a flow direction of the refrigerant, being used to establish a temperature between −20° C. to +180° C. within the test space, a control device of the test chamber being used to control the temperature and / or a relative humidity in the test space. A dehumidifier bypass of the cooling circuit, which comprises a second expansion valve and a second heat exchanger, is used to dehumidify air in the test space.

An electric compressor includes a housing and a compression device. The housing defines an intake volume and a discharge volume. The compression device is a rotary-type compression device configured to compress refrigerant. The compression device includes a piston device including a cylinder and a rolling piston. The cylinder is eccentrically coupled to a drive shaft. The rolling piston has an outer surface in contact with an inner surface of a compression chamber. The rolling piston rotates about the cylinder as the drive shaft and the piston device are rotated by a motor. A vane moveably coupled to the housing and having an end adjacent the compression chamber is biased such that the end of the vane is in contact with the rolling piston as the piston device is rotated by the drive shaft.

The invention provides a waste steam source high-temperature steam heat pump testing system based on heat energy cyclic utilization, and belongs to the field of compression heat pumps. The invention aims to solve the problems of unstable heat supply in a high-temperature lift, low energy efficiency of an evaporation end, poor temperature control effect of a low-level heat source side and limited thermal control means of an experimental platform. The system comprises a condenser, an expansion valve, a liquid storage tank, an evaporator, a compressor, a water spraying cooling tank, a steam pressure reducing valve, a circulating pump and a regulating valve, or a water mixing cooling tank and a heat supply liquid storage tank are additionally arranged, so that the dynamic balance and control of the temperature of the hot end of the system are realized; or a steam pressure reducing valve is replaced by a steam-water heat exchanger, so that heat exchange is carried out on condensed steam and working medium water to realize mild cooling, and redundant energy consumption is avoided; or a bypass adjustable shunting loop is arranged, so that partial high-temperature backwater bypass mixing is realized, and the thermal matching property and the operation stability of the system are enhanced. According to the invention, the output temperature of over 100 DEG C is realized, and the universality and debugging flexibility of experimental system design are realized.

The invention belongs to the technical field of refrigeration and heat pumps, and particularly relates to an energy-saving gas heat pump which comprises a shell, a working cavity is formed in the shell, and a compressor, a condenser, a liquid storage tank and an evaporator are sequentially installed in the working cavity from top to bottom; a first conveying pipe is communicated between the compressor and the condenser, a first conveying pipe is communicated between the condenser and the liquid storage tank, a second conveying pipe is communicated between the liquid storage tank and the evaporator, and an expansion valve is installed on the second conveying pipe. And a refrigeration pipeline is fixedly connected in the evaporator. By arranging the adjusting mechanism, in the using process, the refrigerating effect of the gas heat pump can be adjusted in real time according to the temperature of the external environment, the heat exchange process is accelerated when the temperature of the external environment is high, and it is ensured that heat in the external environment can be taken away or absorbed in time; and when the temperature of the external environment is low, the frosting phenomenon caused by too much refrigerant and too high flow speed of the refrigeration pipeline is avoided.

The utility model relates to an oil way system, a cascade unit, energy-saving equipment and refrigeration equipment, the oil way system comprises a first heat exchanger, a first oil tank and a second oil tank, a first channel and a second channel are arranged in the first heat exchanger, and heat exchange can be conducted between the first channel and the second channel; two ends of the first oil tank are respectively communicated with the first channel to form a first circulating oil path; the two ends of the second oil tank communicate with the second channel to form a second circulating oil way. According to the oil way system, when the oil temperature in the first oil tank and the oil temperature in the second oil tank have a large temperature difference, the oil temperature of one oil tank is too low, and the oil temperature of the other oil tank is too high or too high, heat exchange between the two circulating oil ways can be achieved through the first heat exchanger; and therefore, the conditions of too low oil temperature and too high oil temperature are relieved synchronously, and normal operation of an oil way can be guaranteed. No extra heating assembly or oil cooling assembly is needed, and the power consumption and the manufacturing cost of the oil way system can be obviously reduced.

The invention relates to the technical field of compressors, and provides a liquid accumulator support and a compressor, and the liquid accumulator support comprises a first welding part, a second welding part and a connecting part. Wherein a first groove is formed in the first welding part, and a shell of the compressor can be partially inserted into the first groove, attached to the inner wall of the first groove and fixedly welded to the inner wall of the first groove; a second groove is formed in the second welding part, and the liquid storage device can be partially inserted into the second groove, attached to the inner wall of the second groove and fixedly welded to the inner wall of the second groove; the first welding part and the second welding part are arranged on the two opposite sides of the connecting part and fixedly connected through the connecting part. Thus, the connection rigidity between the shell of the compressor and the liquid storage device is improved, according to the formula # imgabs0 #, f represents frequency, k represents rigidity, and m represents mass, it can be known that when the mass is fixed, the vibration frequency is in direct proportion to the rigidity, and after the connection rigidity is improved, the inherent frequency of the liquid storage device is effectively improved, so that the resonance problem of a low-frequency band is avoided, and the service life of the liquid storage device is prolonged. And the condition of noise generation is improved.

The invention provides an air conditioner and a control method and device thereof, a storage medium and a computer program product, and the method comprises the following steps: after the air conditioner is started for refrigeration and operation, determining to enter an air supply mode or a temperature and humidity control mode according to indoor temperature and indoor relative humidity; if it is determined that the air conditioner enters the temperature and humidity control mode, the current building load and the corresponding sensible heat ratio of the air conditioner are obtained according to indoor and outdoor environment parameters and set parameters of the air conditioner; according to the obtained current building load of the air conditioner and the corresponding sensible heat ratio, the compressor frequency, the inner fan rotating speed and the outer fan rotating speed of the air conditioner are calculated; according to the calculated compressor frequency of the air conditioner and the operation state parameters of the air conditioner, the opening degree of a throttling device of the air conditioner is calculated; and controlling the air conditioner to operate according to the compressor frequency, the rotating speed of the inner fan, the rotating speed of the outer fan and the opening degree of the throttling device which are obtained through calculation. According to the scheme, the humidity can be accurately controlled in the cooling process of the air conditioner, and the indoor comfort is improved.