6393 results about "Refrigeration plant" patented technology

The invention relates to the technical field of refrigeration equipment control, and discloses an artificial intelligence-based refrigeration equipment operation energy-saving control method and equipment, and the method comprises the following steps: collecting multi-dimensional data in a refrigeration environment in real time through a multi-sensor system, the data including environment variable data and equipment operation data; preprocessing the collected multi-sensor data, and generating a comprehensive environment variable through credibility evaluation and data fusion; carrying out load prediction on the current environment variable and the equipment operation state based on a deep learning model, and predicting a future refrigeration load demand; and according to the load prediction result, an optimization objective function is constructed, and an optimal control strategy of the refrigeration equipment is generated. According to the invention, through a deep learning load dynamic prediction technical scheme, a technical effect of high-precision prediction of a future refrigeration load demand is achieved, so that the change trend of an environment variable and an equipment operation state can be accurately captured, and the reliability of load prediction is improved.

The invention relates to the technical field of food safety, in particular to a real-time monitoring method and system for a food storage environment, and the method comprises the following steps: obtaining temperature, humidity and illumination parameter state values based on the real-time monitoring data of the food storage environment, collecting the multi-parameter state, comparing the multi-parameter state with a storage standard, and determining the real-time monitoring data of the food storage environment; and adjusting the running speed of the fan and the starting duration of the refrigeration equipment according to the comparison difference value, and generating an environmental parameter dynamic adjustment result. According to the method, environmental parameters such as temperature, humidity and illumination are obtained and compared with standard storage conditions, operation of a draught fan and refrigeration equipment is dynamically adjusted in real time, the storage environmental conditions are optimized, it is ensured that food is kept in an ideal state, the environmental parameters are mapped to the food quality guarantee state through a neural network, parameter setting is optimized step by step, and food quality guarantee is achieved. The influence of environment quality on food is accurately predicted, optimal matching of storage conditions is ensured, optimal configuration is selected through cross combination scoring, equipment response is more sensitive, and energy waste is reduced.

The invention relates to the related technical field of refrigeration energy-saving control, in particular to an energy-saving control method and system for refrigeration equipment, and the method comprises the steps: achieving the state linkage of an air valve, a compressor and an air feeder through control logic based on a refrigeration equipment unit; after starting, an initial strategy is formulated according to refrigeration requirements to manage a plurality of microclimate spaces; in combination with video monitoring, personnel tracks are captured, behavior modes are analyzed, a local customized control strategy is generated, and a comprehensive refrigeration control strategy is formulated, so that the technical problem of unnecessary energy waste caused by incapability of accurately matching refrigeration requirements and equipment operation states due to lack of real-time sensing analysis on actual operation conditions is solved; the overall refrigeration demand balance is considered, the local area is considered, the refrigeration intensity is flexibly adjusted, accurate matching between the refrigeration demand and the equipment operation state is achieved, distribution of refrigeration resources is optimized, energy waste is effectively reduced, the overall operation efficiency is improved, and the technical effect of energy-saving, intelligent and efficient management of the refrigeration equipment is achieved.

The invention discloses a refrigeration equipment control method and system for a communication machine room, and relates to the field of heat dissipation control, and the method comprises the steps: obtaining machine room indoor temperature and equipment heating data of the communication machine room, and determining a preset refrigeration index according to the machine room indoor temperature and the equipment heating data; the operation parameters of the air conditioning equipment are adjusted to refrigeration operation parameters; when the temperature difference value between the indoor temperature of the machine room and the outdoor environment temperature is higher than a preset starting threshold value, starting parameters of the natural cold energy exchange unit are determined; the natural cold energy exchange unit is controlled to operate according to the starting parameters, and operating parameters of the air conditioning equipment are adjusted to be optimized operating parameters; determining a temperature change trend curve of the outdoor environment temperature based on the weather forecast information, and determining an optimization adjustment node according to the temperature change trend curve; and when the adjusting nodes are optimized, the starting parameters of the natural cold energy exchange unit and the operation parameters of the air conditioning equipment are adjusted. By implementing the application, the energy use of the refrigeration equipment in the communication machine room can be saved.

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.

The invention discloses a refrigeration equipment fault prediction and diagnosis method, device and system, and the method comprises the steps: collecting a vibration signal and a working condition signal of refrigeration equipment, carrying out the preprocessing of the original data of the vibration signal and the working condition signal, and obtaining the vibration characteristic data and the working condition data; aligning the vibration characteristic data with the working condition data, dividing working conditions according to the working condition data, and classifying the vibration characteristic data under each working condition to obtain a plurality of groups of fault diagnosis data sets; on the basis of each working condition, historical healthy vibration data of the refrigeration equipment are obtained, a fault diagnosis model is constructed and trained, abnormal diagnosis is conducted on the vibration characteristic data through the trained fault diagnosis model, and abnormal fault points are obtained; and fault positioning analysis is carried out by adopting a spectrum analysis method, fault positioning information corresponding to each working condition is obtained, and a maintenance work order of the refrigeration equipment is generated and displayed. According to the method, accurate fault pre-judgment diagnosis can be carried out on the refrigeration equipment, and maintenance is convenient.

The utility model relates to the technical field of household appliances, and provides a door body assembly and refrigeration equipment. The door body assembly comprises a box door rotationally connected to a box body and suitable for opening or closing a storage space of the box body. And the door plate is arranged on the outer side of the box door in a sliding manner. The first driven sliding door mechanism and the driving sliding door mechanism are arranged on the box door in a non-coaxial mode, and the driving sliding door mechanism is configured in the mode that in the opening or closing process of the box door, the traction mechanism drives the driving sliding door mechanism, so that the driving sliding door mechanism drives the door plate to move relative to the width direction of the box door; the first driven sliding door mechanism is configured to cooperatively guide the door plate to move relative to the box door. According to the door body assembly, the driving sliding door mechanism is arranged on the box door, and the driving sliding door mechanism can drive the door plate to slide relative to the box body under the auxiliary cooperation of the first driven sliding door mechanism, so that the door plate can avoid obstacles in the closing or opening process of the box door.

The invention provides a refrigeration equipment energy-saving optimization method and system based on a deep learning algorithm, and relates to the field of refrigeration energy saving, and the method comprises the steps: obtaining original data information, and carrying out the exception processing and normalization processing, and obtaining target data information; introducing an attention mechanism to construct a prediction model according to a time sequence prediction method of a long short term memory (LSTM) network, so as to output prediction information; and performing deep learning training based on the target data information to obtain a decision model, making a decision by taking the maximum refrigerating capacity of unit energy consumption as a target according to the refrigeration demand and pre-acquired meteorological prediction data, and outputting decision information to perform regulation and control optimization on the refrigeration equipment. According to the method, the timeliness of equipment regulation and control is improved, regulation and control of the refrigeration equipment can be prospective by pre-estimating the refrigeration demand quantity in advance and setting the equipment operation in advance, and the timeliness of regulation and control is improved, so that the energy consumption loss caused by regulation and control lag is reduced.

The invention relates to the technical field of refrigeration equipment control, in particular to an air conditioner control method and system. Firstly, a refrigerant flow prediction model is established by combining the advantages of LSTM and XGBoost, a time sequence and static characteristics are accurately captured, prediction precision and system adaptability are improved, reliable data support is provided for intelligent regulation and control, refrigerant distribution is optimized, energy efficiency is improved, and energy consumption is reduced; secondly, the opening degree of an electronic expansion valve and the frequency of a compressor are controlled in a feedforward mode through a multivariable cooperative control algorithm, the load and the flow are accurately matched, the system efficiency is improved, it is ensured that all assemblies operate in a coordinated mode, energy waste is reduced, and stability and comfort are optimized; finally, PID feedback control is combined, the frequencies of the electronic expansion valve and the compressor are finely adjusted in real time, the optimal energy efficiency and stability of the system are ensured, closed-loop control is achieved, the temperature control precision is further improved, fluctuation is reduced, and the energy efficiency is optimized.

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.

The invention provides a distributed energy-saving control method and system for refrigeration equipment, and the method comprises the steps: obtaining physical parameters in an environment, fusing the preprocessed data, and generating an environment thermal field model through the mapping of an environment thermal field; according to a time sequence input sequence of the environment thermal field model, obtaining corresponding temperature field time sequence data, performing correction processing on the temperature field time sequence data, generating corresponding future temperature distribution, and forming a predicted future thermal field model; temperature deviation calculation analysis is conducted on future temperature distribution, the cooling capacity demand and the global cooling capacity demand of unit volume air are obtained, and an optimal refrigeration power distribution scheme is designed by minimizing the total energy consumption and meeting the power distribution constraint; and executing the optimal refrigeration power distribution scheme, determining the overall load balance degree of the system according to the current load ratio of each device, performing global optimization scheduling according to the overall load balance degree, and generating a final refrigeration device power distribution scheme.

The invention belongs to the technical field of refrigeration, and discloses an intelligent control method and system for small refrigeration equipment. On one hand, working condition parameters and operation parameters are monitored through various sensors, and a multi-dimensional database is established; establishing an agent model of the refrigeration equipment based on the multi-dimensional database, and performing intelligent matching control on the operation of a compressor and a fan in combination with real-time monitoring data; and on the other hand, a bid evaluation index of the period COPcyc is established to comprehensively measure energy loss in the refrigeration period and the defrosting period, the indicated defrosting amount is determined, and defrosting is started when the accumulated frosting amount reaches the indicated defrosting amount. On the basis that the refrigeration requirement of the refrigeration space is met, the temperature control precision in the refrigeration space is improved by optimizing part operation, inhibiting frost layer growth and starting defrosting according to needs, the operation energy consumption of the refrigeration equipment is reduced, and a new thought and method are provided for precise temperature control and energy conservation of the refrigeration equipment.

The invention belongs to the technical field of dry filters, and particularly relates to an easy-to-clean dry filter for refrigeration equipment, the easy-to-clean dry filter comprises a shell, a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are mounted on two sides of the shell, two convex plates are mounted in the shell, mesh plates I are slidably mounted on the two convex plates respectively, spacer sleeves are mounted on the mesh plates I, and the spacer sleeves are mounted on the mesh plates II; the area between the two protruding plates is divided into a transmission cavity and a drying cavity through the spacer sleeve, and a speed reduction tooth set is installed in the transmission cavity and connected with the first mesh plate. After the air cylinder is started, under the condition that a sliding rod on the second mesh plate is in sliding fit with a chute, the first mesh plate drives the second mesh plate to rotate, so that through holes in the second mesh plate gradually coincide with through holes in the first mesh plate, the flow speed of a refrigerant passing through the second mesh plate and the first mesh plate is increased, and meanwhile, under the action of a speed reduction tooth set, the refrigerant is prevented from falling off. And the space between the drying cavities is gradually increased, so that the refrigerant passes through each part of the drying agent, and small pulverized particles of the drying agent are brought out.

The utility model discloses a compressor and refrigeration equipment, and belongs to the technical field of compressors, the compressor comprises a motor assembly, a pump body assembly, a crankshaft and a silencer, the motor assembly drives the crankshaft to rotate through a stator and a rotor, compressed air is discharged to the silencer through an exhaust port of an air cylinder, and exhaust noise is reduced through a silencing cavity; the crankshaft can penetrate through the first through hole of the cover body and the air outlet of the silencer, and due to the fact that the air outlet and the first through hole are oppositely arranged in the axial direction of the crankshaft, air is exhausted into the cover body through the air outlet and the first through hole, passes through the inner cavity of the cover body and then penetrates through the rotor through the vent hole to be exhausted; due to the fact that gas flows along the silencing cavity, the inner cavity of the cover body and the vent hole in sequence after being exhausted from the air cylinder, disturbance of airflow to a circulating oil way can be effectively reduced, circulating flow of lubricating oil is smoother, stability of oil return and oil spitting is guaranteed, a good lubricating effect is provided for a pump body assembly, and running reliability of the compressor is improved.

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.

The invention discloses an efficient heat exchange structure of energy-saving refrigeration equipment, and relates to the technical field of heat exchangers. Comprising a heat exchanger body, the heat exchanger body comprises a heat exchanger support, and a plurality of heat exchange pipes are arranged in the heat exchanger support; and a plurality of heat exchange fins are arranged on the heat exchange tube. Through the design of the gradient-thickness heat exchange fins and the synergistic effect of the gradient-thickness heat exchange fins and the super-hydrophobic coating and the high-temperature heat insulation coating, random nucleation of condensate water is restrained, condensate water is preferentially formed by the condensation collection grooves in the outer edges of the heat exchange fins due to low heat resistance and fast heat dissipation, and the heat dissipation efficiency is improved by combining the annular condensation collection grooves and millimeter-level flow guide burrs. The guide plate and the Y-shaped guide rib I are combined, a hydrophilic coating II is used for adsorbing water flow, a hydrophobic coating II is matched for blocking airflow interference, and the condensate water is ensured to quickly flow into a bottom condensate water collecting box along a preset path; and the influence of the condensate water on the heat exchange tube is avoided.

The invention discloses an induction motor, a compressor and refrigeration equipment, and relates to the technical field of motors, the induction motor comprises a stator component and a rotor component; the stator component comprises a stator core, the stator core comprises a stator punching sheet, the stator punching sheet comprises a stator yoke and a plurality of stator teeth which are arranged on the inner side of the stator yoke and are arranged at intervals in the circumferential direction of the stator yoke, and every two adjacent stator teeth form a stator groove; the rotor component is arranged on the inner side of the stator component, the rotor component comprises a rotor core, the rotor core comprises a rotor punching sheet, and the rotor punching sheet is provided with a plurality of rotor grooves which are arranged at intervals along the circumferential direction of the rotor punching sheet; wherein the groove height of the rotor groove is # imgabs 0 #, the radius of the rotor punching sheet is # imgabs 1 #, and the groove height of the stator groove is # imgabs 2 #; the thickness of the stator yoke is # imgabs 3 #, and the distance from the bottom of the rotor slot to the center of the inner circle of the rotor punching sheet is # imgabs 4 #; and the formula is as follows: 1.65 # imgabs 5 # 3.3. According to the induction motor, the efficiency of the induction motor can be improved.

A refrigeration device includes a refrigerated compartment, a door that seals the compartment, a dispenser opening in an exterior surface of the door, and a dispenser outlet in the opening. The refrigeration device also includes a reservoir configured to hold a substance and a conveyor configured to convey the substance from the reservoir to the dispenser outlet. Measurement sensors of the refrigeration device are configured to generate first measurement signals that are indicative a gesture of a hand in the dispenser opening. A control unit of the refrigeration device is configured to ascertain a requested fill height based upon the first measurement signals. The control unit is further configured to generate signals that cause the conveyor to convey the substance from the reservoir to a container placed under the dispenser outlet and cease conveying the substance upon the container attaining the requested fill level.

The invention discloses an efficient refrigerating machine room performance optimization method and device, and relates to the technical field of intelligent energy-saving optimizing.The efficient refrigerating machine room performance optimization method comprises the steps that operation data of refrigerating equipment are collected through various sensors and preprocessed; based on the preprocessed operation data, constructing an MT-LSTM model to predict a future cold load demand, and generating a cold load demand prediction value; on the basis of the cold load demand predicted value, generating an optimal scheduling strategy through an NSGA-II optimization algorithm; and according to the optimal scheduling strategy, equipment starting and closing and load proportion distribution are executed through IoT, operation data are monitored in real time, and the operation state of the refrigeration equipment is dynamically adjusted and optimized. According to the method, the future cold load demand is predicted by constructing the MT-LSTM model, and accurate demand prediction is realized.

The invention relates to the technical field of refrigeration equipment, and provides a door body device and refrigeration equipment, the door body device comprises a box door, a cabinet door, a driven guide rail mechanism and a sliding door mechanism, the box door is rotationally connected to a box body through a hinge, and the box door is suitable for opening or closing a storage space of the box body; the driven guide rail mechanism is configured to be arranged between the box door and the cabinet door, and the driven guide rail mechanism is used for guiding the cabinet door to move relative to the box door; the sliding door mechanism comprises a traction assembly and a sliding door assembly which are connected, and the traction assembly is configured to drive the sliding door assembly to act in the opening or closing process of the box door so as to drive the cabinet door to move relative to the width direction of the box door. Therefore, when the box door rotates relative to the box body, the sliding door assembly can be driven by the traction assembly to enable the cabinet door to move relative to the box door, and therefore when the refrigeration equipment is placed in a cabinet in an embedded mode, the refrigeration equipment can be placed in the cabinet in an embedded mode under the condition that coordination and attractiveness are ensured and the use experience of a user is not affected. Interference between the cabinet door and the cabinet can be avoided.

The embodiment of the utility model discloses a motor, a rotary compressor and refrigeration equipment, the motor is characterized in that a rotor is installed in a stator, the stator comprises a stator iron core and a stator winding, the stator iron core comprises a yoke part and a plurality of tooth parts, the yoke part is annular, the plurality of tooth parts are distributed at intervals in the circumferential direction of the yoke part, and the stator winding is wound on the stator iron core. Two adjacent tooth parts and the yoke part jointly define a stator groove, and the stator winding is arranged in the stator groove; wherein the maximum distance between the outer wall of the yoke part and the circle center of the stator is R1, the maximum distance between the bottom of each stator groove and the circle center of the stator is R2, the number of the stator grooves is Q, and the number of poles of the rotor is P. The motor provided by the embodiment of the utility model can improve the structural strength of the motor, ensure the operation reliability of the motor, prolong the service life of the motor, and improve the reliability of the motor. The noise generated during the operation of the motor is reduced, the user experience can be improved, the use effect is better, and the application range is wider.

The invention relates to the technical field of refrigeration equipment, and provides a door body device and refrigeration equipment, the door body device comprises a box door suitable for being rotatably connected to a box body through a hinge of a single shaft and suitable for opening or closing a storage space of the box body; the cabinet door is a wooden cabinet door, and the cabinet door is arranged on the outer side of the box door in a sliding manner; the sliding door mechanism comprises a traction assembly and a sliding door assembly which are connected, the traction assembly is arranged on the front face of the box body, the sliding door assembly is arranged on the box door and connected with the cabinet door, and the traction assembly is configured to drive the sliding door assembly to act in the opening or closing process of the box door so as to drive the cabinet door to move relative to the width direction of the box door. Therefore, when the box door rotates relative to the box body, the sliding door assembly can be driven by the traction assembly to enable the cabinet door to move relative to the box door, and therefore when the refrigeration equipment is placed in a cabinet in an embedded mode, interference between the cabinet door and the cabinet can be avoided under the condition that coordination is ensured.

The invention provides a temperature control system for a rechargeable catering storage platform, and belongs to the technical field of temperature control. The system comprises an acquisition module used for acquiring and acquiring basic parameter data of a catering storage platform, the basic parameter data including internal temperature data, environment humidity parameters, power parameters of heating equipment and refrigeration equipment, energy related parameters of the platform and historical state data of a heat preservation cover body of the catering storage platform; the control module is used for calculating energy revenue and expenditure according to the basic parameter data and selecting a corresponding control strategy; and the heating and refrigerating execution module is used for regulating and controlling the heating equipment and the refrigerating equipment according to the selected control strategy. According to the invention, the problems of temperature control misalignment and out-of-control energy consumption caused by frequent access and sudden environment change are effectively solved, and accurate temperature control and efficient energy management in a complex scene are realized.

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.

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.

The invention relates to the technical field of household appliances, and provides a door body assembly and refrigeration equipment. The door body assembly comprises a box door rotationally connected to a box body and suitable for opening or closing a storage space of the box body; the door plate is arranged on the outer side of the box door in a sliding manner; and the driving sliding door mechanism is arranged on the box door and is configured to drive the door plate to move relative to the width direction of the box door in the opening or closing process of the box door. According to the door body assembly, the driving sliding door mechanism is arranged on the box door, and the driving sliding door mechanism is connected with the box door and the door plate so as to drive the door plate to slide relative to the width direction of the box door in the rotating opening or closing process of the box door relative to the box body; the door plate can avoid obstacles such as walls and objects on the side face in the closing or opening process of the box door, the situation that rotation of the box door is affected due to interference between the door plate and the obstacles is avoided, and the use requirements of users in different scenes are met.

The invention relates to the field of household appliances, and provides a door body assembly and refrigeration equipment, the door body assembly comprises a box door rotatably connected to a box body and suitable for opening or closing a storage space of the box body, and a first mounting groove is formed in the outer side of the box door; the door plate is arranged on the outer side of the box door in a sliding manner; the first sliding door mechanism is arranged in the first mounting groove, one end of the first sliding door mechanism is in transmission connection with the box body through the traction mechanism, the other end of the first sliding door mechanism is connected with the door plate, and the first sliding door mechanism is configured to move in the opening or closing process of the box door. The door plate is driven to move relative to the width direction of the box door. According to the door body assembly, the first sliding door assembly is arranged on the outer side of the box door, the first sliding door mechanism can be hidden in the whole door body assembly, and in the opening or closing process of the box door, the first sliding door mechanism drives the door plate to move relative to the width direction of the box door, so that the door plate avoids obstacles such as walls and objects on the side face.

The invention provides a self-lubricating crankshaft and refrigeration equipment, and relates to the field of refrigeration equipment, an annular concave main shaft oil storage groove is formed by main shaft part sections where oil storage section oil grooves are distributed, the oil storage space is increased, and the lead of the oil storage section oil grooves is smaller than that of other sections of spiral oil grooves, so that the speed of refrigerating machine oil is slower during backflow; the eccentric oil storage groove formed in the end face of the connecting rod shaft is communicated with the eccentric section oil groove through the oil outlet hole, the function of storing the refrigerating machine oil is achieved, and when restarting is conducted after shutdown, the stored refrigerating machine oil can be put into use rapidly and can be supplied to the eccentric part and the main shaft part in time to provide initial lubrication. Dry friction at the starting moment is reduced, the reliability of the crankshaft during starting is improved, and poor lubrication caused by insufficient oil supply is avoided.

The utility model discloses a dustproof structure of air-cooled refrigeration equipment. The dustproof structure comprises a cabinet, a fan set and a self-cleaning dustproof device. According to the utility model, the self-cleaning dustproof device is arranged outside the fan set, the door opener firstly controls the dustproof mesh to be turned over outwards to be opened, the roller set and the dustproof mesh are positioned in the same direction, then the linear module controls the roller set to move back and forth along the track, and when the roller set passes through the position of the dustproof mesh, the dustproof mesh is opened. The two cleaning rollers of the roller pair set can be attached to the inner face and the outer face of the dustproof net to move so that dust attached to the surface of the dustproof net can be swept away, the inner face and the outer face of the dustproof net can be cleaned, and the cleaning effect of the dustproof net can be further improved; the two connecting seats are pushed to move oppositely along the sliding rods through the reset springs, so that the roller sets are folded, it is guaranteed that the two cleaning rollers can be tightly attached to the inner face and the outer face of the dustproof net, and the cleaning effect is guaranteed.

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.