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3586 results about "Refrigeration plant" patented technology

A refrigeration plant uses gas, liquid, and mechanical energy to move heat from one place to another. A liquid, such as ammonia, which has a low boiling temperature is allowed to pass into a space via tubing. As the pressure in the ammonia drops, the liquid begins to boil, and enter a phase transition from liquid to gas. In doing so, there is a great absorption of heat energy by the liquid in the tubing to create this phase change. The heat energy is absorbed from the space, and as the liquid boils off, it forms a gas. The gas is pulled through the tubing in the space into a suction header outside the space to the suction of a compressor. The compressor repressurises the gas, and discharges the liquid through cold water heat exchangers or cooling fans, exhausting the heat absorbed from the space, into the outside atmosphere. By pressurising and cooling the gas, the gas returns to a liquid stage, where it is stored and reintroduced to the space to be cooled.

Rotary compressor and refrigeration equipment

The utility model discloses a rotary compressor and refrigeration equipment, and relates to the technical field of compressors, the rotary compressor comprises a motor, the motor comprises a stator and a rotor, the stator comprises a stator iron core and a stator winding, the stator iron core comprises an annular yoke part and a plurality of tooth parts arranged in the yoke part, the plurality of tooth parts are spaced along the circumferential direction of the yoke part, and the stator winding is arranged in the yoke part; a stator groove is formed between every two adjacent tooth parts, the stator winding is wound in the stator grooves, and the rotor comprises a rotor iron core; the pump body part comprises a crankshaft, an upper bearing and a cylinder; the number of the stator grooves is Q, the number of poles of the rotor is P, the maximum outer circle contour radius of the rotor core is R1, the maximum outer circle contour outer diameter is D1, D1 = 2 * R1, the outer diameter of the part, matched with the upper bearing, of the crankshaft is D2, GCD (Q, P) is the largest common divisor of Q and P, and GCD (Q, P) is larger than or equal to # imgabs0 # 5 and smaller than or equal to 6. The rotary compressor disclosed by the utility model is beneficial to improving the energy efficiency of the rotary compressor and reducing the electric energy consumption during operation.
Owner:ANHUI MEIZHI PRECISION MFG

System and method for controlling running state of screw compressor based on artificial intelligence

The invention relates to the technical field of intelligent control of refrigeration equipment, in particular to an artificial intelligence-based screw compressor running state control system and method, which comprises a signal acquisition unit, a disturbance identification unit and a compressor control unit, the signal acquisition unit acquires a refrigeration house door opening and closing state time sequence signal and three-dimensional temperature field change data, the disturbance identification unit synchronously locks the door opening moment through a timestamp, divides a core influence area and a stable conduction area, analyzes the correlation between the temperature change rate and the door opening angle and the temperature fluctuation amplitude, and determines the temperature change rate of the door opening angle. And the door opening disturbance or equipment abnormity identification factor is output, and the compressor control unit executes differential regulation according to the door opening disturbance or equipment abnormity identification factor, so that the problems of disturbance misjudgment and regulation rigidity in traditional control are solved, and the operation stability and energy consumption control precision of the compressor are improved.
Owner:SUZHOU NEWASIA TECHNOLOGY CO LTD

Motor, compressor and refrigeration equipment

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.
Owner:GUANGDONG MEIZHI COMPRESSOR

Heat exchanger with internal bypass function

The invention provides a heat exchanger with an internal bypass function, belongs to the technical field of refrigeration equipment, and solves the problems that in the prior art, in order to meet the low-pressure-drop requirement of high-viscosity fluid, a plate heat exchanger has to increase the number of runners and reduce the flow speed of the fluid; and the heat transfer performance of the plate heat exchanger is greatly abundant, the cost is high, and the size is large. The heat exchanger with the internal bypass function comprises a sealing plate and a bottom plate, multiple layers of heat exchange plates are arranged between the sealing plate and the bottom plate and used for heat exchange between a refrigerant and liquid, a bypass liquid inlet is fixedly formed in the sealing plate, and a bypass liquid outlet matched with the bypass liquid inlet is fixedly formed in the bottom plate. And a plurality of closed flow channels are formed between the adjacent heat exchange plates through the convex structures and the concave structures. The method has the advantage that the cost of the plate heat exchanger can be reduced.
Owner:ZHEJIANG FORWON PLATE HEAT EXCHANGER

Refrigeration equipment

The present application discloses a refrigeration device, wherein the ice moving device includes a box body, a first refrigeration compartment, a second refrigeration compartment, an ice-making assembly, an ice-taking assembly, and an ice-moving assembly. The ice-making assembly is arranged in the first refrigeration compartment; the ice-taking assembly is arranged on the second door body; the ice-moving device includes an ice-moving channel, an ice-moving part, and an ice-moving assembly. The ice-moving part is arranged in the first refrigeration compartment, and the ice-moving channel includes a first sub-channel and a second sub-channel connected in sequence. The second sub-channel is arranged in the second door body and connected to the ice-taking assembly. The first sub-channel is connected to the ice-moving part, and the ice-moving assembly drives the ice cubes from the ice-moving part to the ice-moving channel. The refrigeration device of the present application avoids occupying the space of the second refrigeration compartment by making and storing ice in the second refrigeration compartment. By arranging the second sub-channel in the second door body, the internal space of the second refrigeration compartment is not occupied, thereby further improving the volume ratio of the refrigeration device. The refrigeration device also includes a sealing assembly that can isolate the first refrigeration compartment and the second refrigeration compartment when ice is not being moved.
Owner:HEFEI MIDEA REFRIGERATOR CO LTD +2

Control method and device, refrigeration equipment, electronic equipment and readable storage medium

The invention provides a control method and device, refrigeration equipment, electronic equipment and a readable storage medium, and relates to the technical field of refrigeration equipment. When the chamber temperature is larger than the preset temperature threshold value, the inverter compressor is controlled to be started, and the inverter compressor is made to reduce the chamber temperature at the first rotating speed; when the chamber temperature is smaller than or equal to the preset temperature threshold value, the inverter compressor is controlled to stop, the chamber temperature rises under the action of the environment temperature till the chamber temperature is larger than the preset temperature threshold value again, and one-time circulation is formed; the first rotating speed is determined based on the power-on duration ratio in the last circulation. According to the technical scheme, the first rotating speed of the next cycle is dynamically adjusted based on the startup duration ratio in the previous cycle, so that the output power of the inverter compressor is precisely matched with the refrigeration requirement, the inverter compressor operates under the working condition of the optimal rotating speed or operates under the working condition close to the optimal rotating speed, energy consumption of refrigeration equipment is reduced, and the refrigeration efficiency is improved. And the energy-saving effect is better.
Owner:ANHUI MEIZHI COMPRESSOR CO LTD

Oil way system, cascade unit, energy-saving equipment and refrigeration equipment

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.
Owner:GREE ELECTRIC APPLIANCE INC OF ZHUHAI

Stator assembly, compressor and refrigeration equipment

The invention discloses a stator assembly, a compressor and refrigeration equipment, and relates to the technical field of motors. The stator assembly comprises a stator core formed by stacking a plurality of amorphous alloy sheets, the stator core comprises a yoke part, a tooth part and a shoe part, and the stator core is formed by stacking a plurality of amorphous alloy sheets, so that the iron loss of the stator assembly can be reduced. For a motor, the area of a stator slot is expected to be as large as possible to increase the winding wire diameter so as to reduce copper loss, and the smaller the minimum width of a tooth part is, the better is, but the smaller the width of the tooth part is, the more likely to cause magnetic field saturation. In order to reasonably design the minimum tooth width of the tooth part so as to reduce the problem of magnetic voltage drop increase caused by magnetic field saturation, the minimum tooth width Wt of the tooth part is set in a range of 2piD / 9Q to 2piD / 3Q, so that the area of the stator slot can be effectively increased, the problem of magnetic voltage drop increase caused by magnetic field saturation can be improved, the magnitude of current can be reduced, and the service life of the stator slot can be prolonged. The working efficiency of the motor is improved.
Owner:ANHUI MEIZHI COMPRESSOR CO LTD

Motor, compressor and refrigeration equipment

The invention discloses a motor, a compressor and refrigeration equipment, the motor comprises a stator assembly and a rotor assembly, the stator assembly comprises a plurality of stator punching sheets stacked in the axial direction, the rotor assembly is located at the radial inner side of the stator assembly, and the rotor assembly comprises a plurality of rotor punching sheets stacked in the axial direction. The rotor punching sheet is provided with a plurality of magnetic steel groove groups which are circumferentially arranged at intervals, each magnetic steel groove group is internally provided with magnetic steel with the same magnetic pole, the magnetic poles of the magnetic steel in two adjacent magnetic steel groove groups are opposite, and the radial outer side of each magnetic steel groove group is provided with a magnetic barrier group. And each groove is arranged between two adjacent magnetic steel groove groups, so that the distribution of a magnetic field is changed, the magnetic field is more uniform, the iron loss is reduced, the torque is improved, the stator saturation is relieved, the rotor magnetic field is fully utilized, harmonic waves are reduced, and the efficiency is further improved.
Owner:GUANGDONG MEIZHI PRECISION MFG

Broiler chicken processing refrigeration warehouse

The broiler processing refrigeration warehouse comprises a refrigeration warehouse body, a warehouse door is installed on the surface of the refrigeration warehouse body, a controller is arranged on one side of the warehouse door, a gas tank is arranged outside the refrigeration warehouse body, a transmission device is arranged on the other side of the warehouse door, and a temperature sensor is installed beside the transmission device; an in-warehouse bin is formed in the refrigeration warehouse, a partition layer is installed in the in-warehouse bin, a door groove is formed in the wall of the in-warehouse bin, a ladder stand is erected on the partition layer, refrigeration equipment is installed in the in-warehouse bin, and a refrigeration evaporator is placed beside the refrigeration equipment. In the using process, the transmission device is started, and the transmission shaft drives the linkage screw to rotate; the linkage screw drives the first cam on the linkage screw to rotate, then the second cam is pushed through the linkage effect, the movement of the second cam promotes the bracket plate to do vertical displacement along the limiting sliding rod, and finally the scraping cover is driven to scrape and remove ice blocks on the fins. The process can effectively avoid the problem that the heat exchange efficiency is greatly reduced due to the fact that ice accumulated between the fins hinders airflow.
Owner:FUJIAN SUNNER DEV

Motor, compressor and refrigeration equipment

The utility model discloses a motor, a compressor and refrigeration equipment, the motor comprises a stator, the stator comprises a stator iron core and a winding, the stator iron core is provided with a plurality of stator teeth, the winding is wound on the stator teeth, and a stator slot is defined between two adjacent stator teeth; the rotor is arranged in an inner cavity of the stator, the rotor comprises a rotor iron core and magnets, the rotor iron core is provided with a plurality of installation grooves, the installation grooves are arranged at intervals in the circumferential direction of the rotor iron core, the magnets are suitable for being installed in the installation grooves, the number of stator grooves is Q, the number of poles of the rotor is 2p, the phase number of the winding is m, the outer diameter of the stator is D1, the inner diameter of the stator is D2, and GCD (Q, G, D) is smaller than Q; 2p) is the largest common divisor of the number of the stator slots and the number of the poles of the rotor and satisfies Q / (2pm) lt; 1, 11.2 < = (D2 / D1) (GCD (Q, 2p)) 2 < = 16.5. According to the motor provided by the embodiment of the utility model, the power density of the motor can be improved and the vibration noise of the motor can be reduced by limiting the largest common divisor of the stator slots and the rotor poles and the inner and outer diameters of the stator.
Owner:GUANGDONG MEIZHI COMPRESSOR

Control method of refrigeration equipment, control device of refrigeration equipment and refrigeration equipment

The invention provides a control method of refrigeration equipment, a control device of the refrigeration equipment and the refrigeration equipment, applied to a control module in the refrigeration equipment, the method comprises the following steps: acquiring target multi-dimensional data acquired by a data acquisition module at a data acquisition moment; inputting the target multi-dimensional data into a temperature prediction model to obtain a predicted internal temperature in the refrigeration equipment; a target internal temperature, detected by the temperature detection module at the data acquisition moment, in the refrigeration equipment is obtained; according to the predicted internal temperature, the target internal temperature is corrected to obtain a corrected internal temperature, and the working state of the refrigeration equipment is adjusted based on the corrected internal temperature. According to the method provided by the invention, the control precision of the refrigeration equipment is improved; and moreover, different changes of refrigeration equipment can be adapted, and error accumulation caused by multi-dimensional data is reduced.
Owner:CHANGHONG MEILING CO LTD

Rotary compressor and refrigeration equipment

The utility model discloses a rotary compressor and refrigeration equipment, the rotary compressor comprises a shell, a motor and a compression mechanism, the motor and the compression mechanism are both arranged in the shell, the motor comprises a stator and a rotor, the compression mechanism comprises a crankshaft, and the crankshaft is connected with the rotor; the rotary compressor meets the following conditions: 5 < = GCD (Q, P) < = 6; q is the number of slots of the stator, P is the number of poles of the rotor, D2 is the inner diameter of the stator, D1 is the outer diameter of the stator, T1 is the thickness of a stator core of the stator, and d is the diameter of the crankshaft. According to the rotary compressor provided by the utility model, the slot number Q of the stator, the pole number P of the rotor, the outer diameter D1 of the stator, the inner diameter D2 of the stator, the thickness T1 of the stator iron core and the diameter d of the crankshaft are set according to reasonable ratios, so that the operation stability and the energy efficiency of the rotary compressor are improved.
Owner:GUANGDONG MEIZHI PRECISION MFG +2

A flexible air duct precise temperature control system and control method thereof

The present invention relates to the field of agricultural product preservation technology, which discloses a flexible air duct precision temperature control system and its control method. The temperature control system refrigeration component includes a flexible air duct component connected to the top of a cold storage through an air cooler, the flexible air duct component includes a flexible air duct, and a plurality of cold storage plates are arranged in different areas in the flexible air duct; a sensor component is used to collect temperature signals and pressure difference signals in the cold storage and the refrigeration component; a controller controls the refrigeration component to process the cold storage plates in three working modes: refrigeration, cold storage and defrosting, and improves the temperature uniformity of the cold storage through the flexible air duct component and the cold storage plates, and reduces the temperature fluctuation in the cold storage during defrosting. The present invention uses flexible air ducts and cold storage plates to improve the temperature uniformity of the cold storage; adopts two exchangers, the air cooler and the cold storage plate, and controls the cold capacity in the cold storage plates when the refrigeration equipment defrosts, so as to significantly reduce the temperature fluctuation in the storage during defrosting.
Owner:SICHUAN ACADEMY OF AGRICULTURAL MACHINERY SCIENCES

Pump body assembly, compressor and refrigeration equipment

The invention discloses a pump body assembly, a compressor and refrigeration equipment, and relates to the technical field of compressors, the pump body assembly comprises an air cylinder, a pump body, a pump body, a pump body, a pump body and a pump body, and the air cylinder is provided with a working cavity and a sliding groove communicated with the working cavity; the piston is eccentrically and rotatably arranged in the working cavity; the sliding piece comprises a sliding piece body and a hinge portion arranged at one end of the sliding piece body, the sliding piece body is arranged in the sliding groove in a sliding mode, the hinge portion is hinged to the piston and provided with a first opposite-grinding face, the piston is provided with a second opposite-grinding face in contact with the first opposite-grinding face, and the second opposite-grinding face is provided with a second opposite-grinding face in contact with the second opposite-grinding face. The surface hardness of the first counter-grinding surface is at least 30% higher than that of the second counter-grinding surface. According to the technical scheme, adhesive abrasion can be effectively reduced, and the problem that abrasion of a hinge structure is aggravated is solved.
Owner:GUANGDONG MEIZHI PRECISION MFG +2

Stator punching sheet, stator core, motor, compressor and refrigeration equipment

The utility model relates to the technical field of motors, and provides a stator punching sheet, a stator core, a motor, a compressor and refrigeration equipment, and the stator punching sheet comprises a stator yoke part which is of an annular structure; the plurality of stator teeth are arranged on the inner circumferential surface of the stator yoke part and are arranged along the circumferential direction of the stator yoke part, and the inner circumferential surface of the stator yoke part and two adjacent stator teeth are encircled to form a stator slot; the plurality of groove structures are arranged on the outer circumferential surface of the stator yoke part and are distributed along the circumferential direction of the stator yoke part, in the radial cross section of the stator yoke part, the groove bottom of each stator groove is an arc, the radius of the arc is R3, the distance from the groove bottom of each groove structure to the circle center of the stator yoke part is E, and the included angle between the center line of each groove structure and the center line of each stator tooth is theta, the outer circle radius of the stator yoke part is R2, the groove depth of the groove structure is L. The groove depth L of the groove structure meets the condition that R2-E is larger than or equal to 0.4 * R3-E * sin theta and smaller than or equal to R3, so that the situation that the local width of the stator yoke part is too narrow is avoided, and the overload capacity and efficiency of the motor are improved.
Owner:GUANGDONG MEIZHI COMPRESSOR

Freezer remote monitoring and fault prediction system

The invention relates to the technical field of refrigeration equipment state monitoring and data analysis, and discloses a freezer remote monitoring and fault prediction system, which comprises the steps of intercepting operation data of a freezer in a door closing silence period, calculating an environment dew point temperature sequence and extracting a unit temperature difference load fluctuation ratio sequence of a refrigeration system; based on the time change rate of the environment dew point temperature sequence and the unit temperature difference load fluctuation ratio sequence, an instantaneous cross bispectrum coupling potential energy sequence representing the nonlinear modulation relation of the time change rate and the unit temperature difference load fluctuation ratio sequence is constructed; then, a two-dimensional phase space hysteresis track is constructed with the environment dew point temperature sequence as the horizontal axis and the instantaneous cross bispectrum coupling potential energy sequence as the longitudinal axis, and the cross bispectrum hysteresis entropy of the dew point driving type load volatility is calculated based on the probability density distribution of the track and the directed circulation area; and finally, judging an operation state and outputting a fault prediction result by verifying whether the entropy value is within a historical reference interval.
Owner:QINGDAO ABLE WELL ELECTRICAL APPLIANCE

Motor, compressor and refrigeration equipment

The utility model discloses a motor, a compressor and refrigeration equipment. The motor comprises a stator; the rotor is arranged in an inner cavity of the stator, the rotor comprises a rotor iron core and magnets, the rotor iron core is provided with a plurality of magnet grooves, the magnet grooves are arranged at intervals in the circumferential direction of the rotor iron core, the magnets are suitable for being installed in the magnet grooves, the outer diameter of the rotor is D, and on the cross section perpendicular to the rotating axial direction of the rotor, D is larger than D; the minimum distance between each magnet and the rotation center of the rotor is L, the intrinsic coercive force of the magnets is Hcj, and the Hcj (L / D) / 1000 is larger than or equal to 0.975 kA / m and smaller than or equal to 1.71 kA / m, and the Hcj is smaller than or equal to 1800 kA / m. According to the motor provided by the embodiment of the utility model, the ratio of the minimum distance between each magnet and the rotation center of the rotor to the outer diameter of the rotor is defined as a demagnetization factor, and the relationship between the demagnetization factor and the intrinsic coercive force of the magnets is limited, so that the utilization rate of the magnets can be ensured, and the service life of the motor is prolonged on the basis of ensuring the demagnetization rate of the motor. The use of counterweight rare earth materials can be reduced, the cost of the magnet is reduced, and the cost performance of the motor is improved.
Owner:GUANGDONG MEIZHI COMPRESSOR

Refrigerating system, control method, device and equipment thereof and storage medium

The invention provides a refrigerating system, a control method and device thereof, equipment and a storage medium, belongs to the technical field of refrigerating control, and solves the problems that operation parameters of the refrigerating system cannot be accurately controlled and energy consumption is high. The control method comprises the steps that the mass of articles stored in a compartment of the refrigeration equipment, the temperature in the compartment and the temperature of the environment where the refrigeration equipment is located currently are obtained; the optimal operation frequency of a compressor is determined according to the article mass and the temperature in the compartment; and the optimal opening degree of the electronic expansion valve is determined according to the optimal operation frequency and the environment temperature, so that the operation parameters of the refrigeration system can be more accurately controlled, and the energy consumption is reduced.
Owner:HANGZHOU KANGBEI MOTOR

Flow-state ice cold storage circulation energy-saving method and device in refrigeration house and medium

The invention belongs to the technical field of refrigeration control of refrigeration houses, and provides an energy-saving method and device for ice slurry storage circulation in a refrigeration house and a medium, and the method comprises the following steps: monitoring operation parameters of the refrigeration house in real time, and obtaining and analyzing data to predict a cold load demand; in a low-ebb electricity price period, refrigerating parameters are automatically adjusted according to cold load prediction and cold storage tank reserves, and ice making is implemented; when the temperature of the refrigeration house is close to a set threshold value, energy-saving regulation and control are performed in combination with a prediction result According to the cold load and reserve conditions, different working condition stages of the refrigeration house are determined, and finally a circulation regulation and control result is generated based on the flow-state ice circulation requirement; according to the method, through cold load prediction and accurate regulation and control according to different working conditions, invalid operation and excessive refrigeration of refrigeration equipment are avoided, energy consumption is effectively reduced, ice making and cold storage are achieved through the low-ebb electricity price, electric energy is reasonably utilized, and the electricity utilization cost is reduced.
Owner:CHINA CONSTR FIRST GRP THE SECOND CONSTR +1

Induction motor, compressor and refrigeration equipment

The utility model discloses an induction motor, compressor and refrigeration equipment, relates to the motor technical field, the induction motor comprises a stator part, a stator iron core comprises a plurality of stator punching sheets laminated along the axial direction of the stator iron core, each stator punching sheet comprises a stator yoke and a plurality of stator teeth arranged on the inner side of the stator yoke and arranged along the circumferential direction of the stator yoke at intervals, a stator slot is formed between every two adjacent stator teeth; wherein any two intersection points exist between a line segment of the stator punching sheet passing through the circle center and the outer contour of the stator punching sheet, the maximum value of the line segment between any two intersection points is L1, the minimum value of the line segment between any two intersection points is L2, and L1 / L2 is greater than or equal to 1.02 and less than or equal to 1.2, the tooth width of the stator teeth is W1, the maximum slot width of the stator slots is W2, W2 / W1 is greater than or equal to 2.6 and less than or equal to 3.6, the minimum stator yoke width of the stator punching sheet is Y1, the inner diameter of the stator punching sheet is L3, and Y1 / ((L1-L3) / 2) is greater than or equal to 0.3 and less than or equal to 0.45. According to the induction motor, the efficiency of the induction motor can be improved, and the calorific value is reduced.
Owner:GUANGDONG MEIZHI COMPRESSOR

Motor, compressor and refrigeration equipment

The invention discloses a motor, a compressor and refrigeration equipment, and relates to the technical field of permanent magnet motors, the motor comprises a stator iron core and a rotor iron core, rotor holes are formed in the inner circumference of the stator iron core, the number of stator grooves is Q, the width of each stator groove opening in the circumferential direction is W, and the minimum radius of each rotor hole is R; an inter-pole groove is concavely arranged between every two adjacent magnetic steel grooves and on the periphery of the rotor core, n harmonic grooves distributed at intervals are further concavely arranged on the periphery of the rotor core in sequence, central angles of the n harmonic grooves are A1, A2, and An in sequence on the circle center of the rotor core, a central angle of the inter-pole groove is As, and the number of poles of the motor is 2P, and the formula is satisfied. The technical scheme provided by the invention aims to suppress harmonic waves, reduce torque pulsation and further reduce the operation noise of the motor.
Owner:GUANGDONG MEIZHI COMPRESSOR

Refrigerant recovery system for testing a refrigeration device and control method thereof

The application provides a refrigerant recovery system for refrigeration equipment test and a control method thereof, which comprises a compressor A, a three-way valve, a condenser, an oil separator A, a first pipeline, a second pipeline and a third pipeline, the three-way valve comprises a C port, a D port and an E port, one end of the first pipeline is communicated with the C port, and the other end can be communicated with a discharge end of the compressor A, one end of the second pipeline is communicated with the D port, and the other end is communicated with the oil separator A, one end of the third pipeline is communicated with the E port, and the other end can be communicated with the condenser, when the compressor A is started, the C port can be connected with the D port, and the E port is closed; when the compressor A is closed, the E port can be connected with the D port, and the C port is closed. According to the application, the problem that the flow direction of refrigerant in the oil separator is inconsistent when the refrigeration equipment is normally operated and when the recovery system is operated can be solved, and the problem that the efficiency of the oil separator is not high when the recovery system of the prior art is operated can be solved.
Owner:GREE ELECTRIC APPLIANCE INC OF ZHUHAI

Refrigeration equipment

The invention provides refrigeration equipment, relates to the technical field of household appliances, and is used for realizing operation of an artificial intelligence algorithm while a refrigeration function of a refrigerator is not influenced under the condition that resources of a main control chip of the refrigerator are limited. The refrigeration equipment comprises a box body, a refrigeration system, a heater, a memory and a controller, wherein a target model is deployed in the memory; the controller is configured to split a target algorithm task corresponding to the target model into a plurality of algorithm sub-tasks; executing at least one algorithm sub-task in the plurality of algorithm sub-tasks in the residual execution duration of at least one execution cycle of the plurality of execution cycles; wherein the remaining execution duration is the remaining duration after all the core tasks are executed in each execution period, and the core tasks are used for achieving normal operation of the refrigeration equipment; and running the plurality of execution cycles until the plurality of algorithm sub-tasks end running, and obtaining a running result of the target model.
Owner:HISENSE(SHANDONG)REFRIGERATOR CO LTD

Ice moving device and refrigeration equipment

The present application discloses an ice-moving device and a refrigeration device, wherein the ice-moving device comprises: an ice-moving portion, wherein the ice-moving portion is formed with an ice-moving inlet, an ice-moving chamber, and an ice-moving outlet that are interconnected; an ice-moving channel, which is connected to the ice-moving chamber through the ice-moving outlet and is used to connect to an ice-taking assembly; a main rotating member, wherein the main rotating member is rotatably arranged in the ice-moving chamber, wherein the ice-moving inlet and the ice-moving outlet are located on the periphery of the main rotating member, wherein the main rotating member is rotatable in a first direction and carries ice cubes that enter the ice-moving chamber from the ice-moving inlet and are thrown out from the ice-moving outlet to the ice-moving channel. Since the main rotating member can rotate continuously at a certain speed, ice cubes that come out of the ice-making assembly can be continuously and quickly thrown to the ice-taking assembly, the ice cubes move quickly, the ice-taking efficiency is high, and quick and continuous ice-taking is achieved, the waiting time for users to take ice is short, and the ice cubes are not easy to melt, the ice cubes are of high quality, and the ice cubes are not easy to melt and stick together.
Owner:HEFEI MIDEA REFRIGERATOR CO LTD +2

Ice making module, ice making equipment, refrigeration equipment and deicing control method

The invention discloses an ice making module, ice making equipment, refrigeration equipment and a de-icing control method.The ice making module comprises an ice cube tray component, a refrigeration component and a vibration component, the ice cube tray component comprises one or more containing cavities, and the containing cavities are used for containing ice making liquid; the refrigeration part comprises one or more refrigeration units, and the containing cavity corresponds to the refrigeration units; the refrigeration units are arranged on the mounting outer surfaces of the corresponding accommodating cavities; the mounting outer surface belongs to the outer surface of the accommodating cavity, and the mounting outer surface is not in contact with the ice-making liquid; the vibration part is arranged on the mounting outer surface, and the vibration part and the refrigeration unit are located on different mounting outer surfaces; the vibration component is used for vibrating according to a preset working frequency, so that the ice cube tray component enters a resonance state corresponding to the preset working frequency; therefore, the vibration part excites the ice tray part to enter the resonance mode, the adhesive force between ice blocks and the ice tray part and the cohesion force of the ice blocks are overcome, and efficient and low-energy-consumption ice unloading is achieved.
Owner:SHENZHEN INTELLIROCKS TECH CO LTD +1

Freezing plant load carbon emission reduction potential evaluation method fusing TimesNet and PatchTST

The invention discloses a freezing plant load carbon emission reduction potential evaluation method fusing TimesNet and PatchTST, and belongs to the technical field of power system regulation and control, and the method comprises the steps: predicting a carbon emission factor corresponding to unit power consumption per hour based on multi-dimensional time sequence characteristics; constructing a load regulation capability prediction model to obtain the maximum load up-regulation capability and the maximum load down-regulation capability under the permission of the equipment boundary and the process constraint; based on the carbon emission factor and the maximum load up-regulation capability and down-regulation capability, establishing a load carbon emission reduction potential evaluation model, and outputting a carbon emission reduction potential; according to the load carbon emission reduction potential evaluation method, through a freezing plant load kilowatt-hour electricity carbon emission factor prediction method based on TimesNet, the capability of capturing multi-time scale periodicity and trend is fully utilized, and power grid carbon emission data and a regional load structure are combined, so that dynamic prediction of carbon factors is realized.
Owner:LIYANG RES INST OF SOUTHEAST UNIV +1

Refrigeration equipment

The refrigeration equipment comprises a main body and a door body, and the door body comprises a side wall and a front wall which are arranged at an included angle; the hinge assembly comprises a first hinge piece and a second hinge piece, the first hinge piece is provided with a first shaft and a second shaft, and the second hinge piece comprises a first groove and a second groove which are communicated with each other; in the door body opening process, the first shaft can slide relative to the first groove, so that the first shaft moves away from the front wall and then close to the front wall to form a first track, the first shaft moves away from and close to the front wall in a reciprocating mode to form a second track, and the first shaft moves close to the front wall to form a third track. The second shaft can slide relative to the second groove, so that the second shaft moves away from the front wall to form a fourth track and moves close to the front wall to form a fifth track. The hinge assembly is compact in layout and small in occupied space, and the door body can be thinner while the door body of the embedded refrigeration equipment can be opened at a large angle.
Owner:HEFEI HUALING CO LTD +2

Refrigeration equipment

The utility model discloses refrigeration equipment which comprises a chamber, a refrigeration system, a controlled atmosphere container, a cold air supply path, an oxygen adjusting module and an oxygen adjusting path. The controlled atmosphere container is contained in the chamber and provided with a cold air channel. The cold air supply path is communicated with the refrigerating system and the chamber and supplies cold air to the outer side of the air conditioning container, and the cold air supply path can also be communicated with the interior of the air conditioning container through the cold air channel; and the oxygen-adjusting gas path is communicated with the oxygen-adjusting module and the interior of the air-adjusting container and supplies oxygen-adjusting gas flow to the interior of the air-adjusting container. According to the refrigeration equipment, the oxygen concentration in the controlled atmosphere container can be adjusted, the cold air supply way supplies cold air to the outer side of the controlled atmosphere container, cooling of the controlled atmosphere container is achieved, and the situation that a large amount of cold air is fed into the controlled atmosphere container, consequently, the oxygen concentration in the controlled atmosphere container is greatly fluctuated, and the fresh-keeping effect is not affected is avoided; a part of cold air can be fed into the controlled atmosphere container through the cold air channel, so that condensation and frosting in the controlled atmosphere container caused by too much water vapor carried in the controlled atmosphere air flow are prevented.
Owner:QINDAO HAIER REFRIGERATOR CO LTD +1

Motor, compressor and refrigeration equipment

The invention discloses a motor, a compressor and refrigeration equipment, and relates to the technical field of refrigeration equipment, the motor comprises a rotor and a stator, the rotor is rotatably arranged in the stator, the thickness of a permanent magnet in the magnetizing direction is hm, and the coercive force is Hcj; the number of poles of the rotor is p; the stator comprises a stator core, the stator core comprises a plurality of first stator punching sheets and a plurality of second stator punching sheets which are laminated, the first stator punching sheets are made of silicon steel materials, and the total length of the first stator punching sheets in the axial direction of the stator is h1; the second stator punching sheets are made of amorphous alloy materials, the total length of the second stator punching sheets in the axial direction of the stator is h2, and at least one first stator punching sheet is located at the lowest end of the axial direction of the stator iron core. According to the technical scheme provided by the invention, balance is found between reservation of the low iron loss advantage of the amorphous alloy material and realization of reliable assembly of the stator and the main shell through relevant parameter constraints, so that the amorphous iron core can be prevented from being extruded, the cost is reduced, and the energy efficiency of the compressor is improved.
Owner:GUANGDONG MEIZHI COMPRESSOR