11820results about "Cooling fluid circulation" patented technology

Disclosed herein are devices, systems and methods for the hypothermic storage of biological samples, such as tissues, organs, or body fluids between arrival at a transplantation site and transplantation. In some examples, various cooling media may be positioned in and around a container used to for the hypothermic storage.

The invention provides an intelligent adjusting and dynamic defrosting method and system based on multiple sensors and a medium The method comprises the steps that firstly, monitoring data are obtained in real time according to the multi-dimensional sensors deployed in a freezer, and a multi-source data matrix is obtained through preset data processing and integration; secondly, dynamically adjusting a frost condition model weight coefficient according to monitoring data, and quantifying a frost condition coefficient based on a frost condition model in combination with a multi-source data matrix; then, executing a three-stage defrosting strategy according to the frost condition coefficient, and respectively adjusting working parameters of defrosting equipment such as a compressor, a condensation fan or a heater; and finally, precise control over the box temperature is achieved through power step soft start of a compressor and PID dynamic adjustment of an electronic expansion valve, and energy efficiency optimization is achieved by automatically optimizing the rotating speed of a condensation fan based on the environment temperature and humidity. The corresponding defrosting operation is triggered through the frost condition coefficient, and the effectiveness of defrosting and the stability of the box temperature are improved; in addition, the adaptability of special scenes is enhanced by dynamically adjusting the weight.

The invention provides an automatic energy-saving control method and device for a ring cooling fan based on load feedback, relates to the field of ring cooling fans, and solves the technical problem of delay of regulation and control in an energy-saving working state. The method comprises the steps that working condition data are input into a preset powder box model, and a feed-forward air volume instruction is obtained through calculation; and inputting the working condition data into a state observer to obtain an optimal estimated temperature value. And the deviation between the optimal estimated temperature value and a preset temperature set value is calculated, and a feedback air volume compensation instruction is obtained through calculation of a feedback controller according to the deviation. And fusing the feed-forward air volume instruction and the feedback air volume compensation instruction to obtain a final air volume control instruction, and issuing the final air volume control instruction to a fan frequency converter for execution. And continuously monitoring the numerical value and the change trend of the feedback air volume compensation instruction, taking the feedback air volume compensation instruction as a prediction error signal of the powder box model, and adaptively adjusting key thermal parameters in the powder box model. The method is used in the control process of the ring cooling fan.

A refrigeration fan with lateral heat dissipation is provided, including a fan head and a hand-held handle. A conductive sheet is laid on an outer surface of the hand-held handle, a cavity is arranged in the hand-held handle, and a cold-heat generation apparatus is mounted in the cavity. The hand-held handle is provided with an air inlet and an air outlet, a refrigeration end of the cold-heat generation apparatus is connected to the conductive sheet in a heat conduction manner, and a heat dissipation end of the cold-heat generation apparatus communicates with the air outlet.

The invention discloses the technical field of constructional engineering and intelligent control, and relates to a concrete hydration heat self-adaptive control method and system based on digital twinning. The method comprises the following steps: S1, constructing a concrete finite element model, simulating a hydration heat process, and outputting simulation data of temperature and temperature stress; s2, based on the analog data, optimizing the arrangement scheme of the cooling water pipe and the sensor through a composite convolutional neural network; s3, arranging and collecting real-time temperature and temperature stress data according to the scheme; s4, in combination with simulation and real-time data, predicting temperature change by adopting a BP neural network and a long-short term memory network, and constructing a dynamic prediction model; s5, based on the prediction result and the real-time data, constructing a WebGL digital twinborn platform, visualizing the data and correcting a prediction model; and S6, dynamically adjusting parameters of the cooling water pipe according to a correction result to realize hydration heat self-adaptive control. The invention further provides a system for realizing the method, the concrete temperature and the temperature stress can be accurately controlled, and the engineering structure safety and the quality control efficiency are improved.

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 embodiment of the utility model belongs to the technology of storage equipment, and provides a storage box which comprises a box body, an airflow circulation assembly and an adjusting assembly, the airflow circulation assembly is provided with a first channel, a second channel and an air mixing channel, and the air mixing channel communicates with an output port of the first channel and an output port of the second channel; the airflow circulation assembly comprises a front cover, a first channel is formed in the side, away from the storage cavity, of the front cover, and a second channel is formed in the side, close to the storage cavity, of the front cover. The refrigeration assembly is located in the first channel and used for reducing the temperature of airflow flowing through the first channel. The humidifying assembly communicates with the second channel and is used for improving the humidity of airflow flowing through the second channel. According to the storage box provided by some embodiments of the invention, in the airflow circulation between the storage cavity and the airflow circulation assembly, the humidification airflow does not flow through the refrigeration assembly, the refrigeration assembly cannot absorb the moisture of the humidified airflow, then it can be guaranteed that the humidification assembly accurately adjusts the airflow humidity, the humidity adjusting precision of the storage box can be improved, and the storage box is more convenient to use. And storage of articles is facilitated.

A refrigerator may include a main body forming a storeroom; a thermoelectric element including a heater and a cooler, the cooler configured to cool air inside the storeroom; a fan configured to operate to bring air from outside the main body to the heater to be heated by the heater and exhaust the heated air to outside the main body; a filter configured to filter foreign materials from the air brought from outside the main body to the heater by operation of the fan; and a controller configured to notify that the filter is clogged in response to a rotation speed of the fan being higher than a reference rotation speed.

The embodiment of the utility model belongs to the technology of storage equipment, and provides a storage box which comprises a box body, an airflow circulation assembly and an adjusting assembly, the airflow circulation assembly is provided with a first channel, a second channel and an air mixing channel, and the air mixing channel communicates with an output port of the first channel and an output port of the second channel; the airflow circulation assembly comprises a rear cover, a first channel is formed in the side, away from the storage cavity, of the rear cover, and the rear cover separates the storage cavity from the first channel. The refrigeration assembly is located in the first channel and used for reducing the temperature of airflow flowing through the first channel. According to the storage box provided by the embodiment of the invention, in airflow circulation between the storage cavity and the airflow circulation assembly, the storage cavity and the refrigeration assembly are separated through the rear cover, the direct distance between the refrigeration assembly and the storage cavity is small, and the rear cover can reduce the direct influence of the refrigeration assembly on the interior of the storage cavity; and therefore, the refrigeration assembly is prevented from influencing the temperature uniformity of the storage cavity, and storage of articles is facilitated.

The invention relates to the technical field of refrigeration house energy-saving control and digital twinning, in particular to a refrigeration house fan energy-saving operation method and system, and the method achieves the whole-field temperature deduction of a sensor-free area by constructing a CFD reference model and simulating and predicting the three-dimensional transient airflow and temperature distribution in a refrigeration house. Model parameters are calibrated through measured data, and the order of the model is reduced by adopting intrinsic orthogonal decomposition and Galerkin projection, so that the calculation amount is remarkably reduced, and online optimization is supported. And in combination with a data assimilation algorithm, the prediction result of the reduced-order model is continuously corrected, and the adaptability to environment change and system aging is improved. The optimization control stage takes minimization of the total energy consumption of a fan as a target, solves an optimal fan control sequence under the hard constraint that the whole-field temperature does not exceed the cargo safety upper limit and does not exceed the cargo safety lower limit, and adopts a rolling time domain mode for execution to realize collaborative optimization of safety and energy conservation.

The invention provides a concrete regulation and control system and method integrating heat recovery, spraying and gradient control, and relates to the technical field of concrete curing, and the concrete regulation and control system comprises a temperature sensing element and a humidity sensing element which are mounted on reinforcing steel bars in a concrete structure in a layered manner in the depth direction; the cooling water circulating system comprises a water pump and a cooling water pipe, and the cooling water pipe is arranged in the mass concrete structure and externally connected with a variable frequency circulating pump; the double-water-tank system is matched with the heater to realize graded regulation of water temperature; the automatic spraying system is connected with the integrated electric heating module; the heat recovery and circulation assembly is connected with an outlet of a cooling water pipe in the concrete, recovers concrete hydration heat brought out by the cooling water pipe, and transfers heat of high-temperature cooling water with the temperature being 50 DEG C or above to the phase change heat storage tank; the central control unit continuously receives and records monitoring data of the temperature sensor and the humidity sensor and analyzes the monitoring data in real time, and when the temperature gradient or the humidity gradient exceeds the limit, a gradient field control instruction is automatically triggered to achieve energy efficiency maximization.

The invention discloses a vibration type battery liquid cooling device and a method thereof.The vibration type battery liquid cooling device comprises a sealing box body containing cooling liquid, a battery, a temperature adjusting assembly, a water pump, a vibration assembly and a controller, a gas cavity is formed between the upper surface of the cooling liquid and the inner top wall of the sealing box body, and the battery is detachably installed in the sealing box body and immersed in the cooling liquid; the temperature adjusting assembly is arranged on the inner wall of the sealing box body, the vibration assembly is arranged at the bottom of the outer side of the sealing box body, a water inlet and a water outlet lower than the water inlet are formed in the two sides of the sealing box body respectively, and the water inlet and the water outlet are connected with the water pump through pipelines respectively to form a circulating water path. The controller is in signal connection with the temperature adjusting assembly, the water pump and the vibration assembly. On the basis of circulating water cooling of a traditional battery, vibration generated by the vibration exciter installed below the sealed box body promotes instability of a temperature boundary layer in cooling liquid, the convection heat exchange efficiency of flowing is improved along with enhancement of vibration strength, and the cooling efficiency is improved.

A water tank wire drawing machine for metal wire machining comprises a water tank and a wire drawing mechanism, a cooler is arranged in a first water tank, and the cooler comprises a cooling water pipe arranged above a wire drawing cone pulley and a wire drawing die and a flow guide component arranged below the wire drawing cone pulley and the wire drawing die; the cooling water pipe is used for spraying cooling liquid to the upper side of the wire drawing cone pulley and the upper side of the wire drawing die, the cooling liquid is used for cooling the parts, making contact with the wire, of the wire drawing cone pulley and the wire drawing die, meanwhile, the cooling liquid can also achieve the lubricating effect, and the abrasion condition of the wire in the wire drawing process is further reduced; the cooling liquid near the wire drawing cone pulley and the wire drawing die can flow downwards and be guided out through the shape structure of the flow guide component, the flowing speed of the cooling liquid near the wire drawing cone pulley and the wire drawing die can be increased, and the cooling effect on the wire drawing cone pulley and the wire drawing die is improved.

A refrigerator including a refrigerating compartment; a freezing compartment; an evaporator at a rear side of the freezing compartment; a communicating duct including a first flow path and a second flow path; a refrigerating compartment duct configured to receive cold air generated by the evaporator from the communicating duct and including a first internal flow path to guide cold air from the first flow path to a first refrigerating space of the refrigerating compartment, and a second internal flow path to guide cold air from the second flow path to a second refrigerating space of the refrigerating compartment; and a damper including a first damping cover configured to control a supply of cold air to the first internal flow path, and a second damping cover configured to control a supply of cold air to the second internal flow path.

The control method comprises the steps that when the refrigerator enters a loading recovery period, if it is detected that the temperature rise of a compartment is too high, the rotating speed of a compressor is sequentially increased in at least two continuous adjustment periods; and when it is detected that the temperature of the chamber is decreased or the temperature of the chamber is increased to be normal in any adjustment period, the compressor is controlled to operate at the standard rotating speed which is smaller than the rotating speed in the adjustment period. According to the method, an extensive control mode that the rotating speed of the compressor is directly and greatly increased in a traditional scheme is changed, a periodic progressive speed increasing strategy is adopted, the rotating speed is gradually increased through a plurality of continuous adjusting periods at the initial stage with the large temperature difference, high-frequency starting and excessive power output of the compressor are avoided, energy consumption is reduced, and the purpose of saving energy is achieved.

The invention belongs to the technical field of energy storage cooling, and particularly relates to a cooling circulation system and an equipment cooling method, and the cooling circulation system comprises a liquid inlet system, a heat exchange system and a liquid outlet system. The heat exchange system comprises a plurality of heat exchange units which are connected in parallel; the liquid inlet system is connected with the input end of the heat exchange system, and a pressure detection device, a liquid temperature measurement device I, a pollution discharge degassing tank and a liquid circulation driving unit are connected into the liquid inlet system; the liquid outlet system is connected with the output end of the heat exchange system, and a conductivity detection device, an outlet pressure detection device and a liquid temperature measurement device II are connected into the liquid outlet system. Through dynamic modular adjustment, multi-parameter intelligent control, energy-saving composite heat dissipation and high-reliability design, the problems of low heat dissipation efficiency, high energy consumption, high maintenance cost, poor adaptability and the like in the prior art are effectively solved; and particularly, the method has remarkable advantages in the aspects of precise heat dissipation of high-power-density equipment, stable operation under complex working conditions and full-life-cycle cost control.

An intelligent cooling system for dynamic monitoring, prediction and optimization of storage conditions in real time, consisting of: a refrigerator with heat-insulated walls; a sensor array in the refrigerator comprising temperature sensors, humidity sensors, pressure sensors, and pathogen detection biosensors, the sensor array being configured to continuously monitor internal environmental parameters in the refrigerator and external environmental conditions; a control dashboard configured to display real-time environmental data and enable remote monitoring and manual adjustment of the environment in the refrigerator; an Internet of Things (IoT) communication module configured to transmit the monitored internal and external environmental data to the control dashboard; a proportional-integral-derivative (PID) controller operatively connected to the IoT communication module and configured to analyze the monitored data and calculate correction factors to maintain optimal environmental conditions; a plurality of actuators within the refrigerator, the plurality of actuators comprising a temperature actuator, a humidity actuator, and a pressure actuator, the actuators being configured to independently adjust temperature, humidity, and pressure within the refrigerator based on the control instructions; a processor configured to execute machine learning algorithms to analyze historical and real-time sensor data, predict optimal environmental conditions based on the analyzed data, and generate control instructions for the actuators based on the predicted optimal environmental conditions and the calculated correction factors; and a solar power supply configured to provide energy for operating the system.

The invention discloses a novel energy storage vehicle-mounted refrigerator and a control method, and relates to the technical field of refrigeration. The device comprises a box body, a novel energy storage heat exchange system and a control system, the novel energy storage heat exchange system comprises an energy storage body containing a cold storage medium; the cooling channel penetrates through the air duct system of the energy storage body; the heat exchange part is communicated with the vehicle-mounted refrigerating system and comprises a first heat exchange structure in contact with the cold storage medium; and the air guide part drives air to flow through the cooling channel. The first heat exchange structure is provided with a channel and / or a heat exchange piece used for circulating a refrigerant of the vehicle-mounted refrigerating system, and the first heat exchange structure is used for efficiently transmitting the cooling capacity of the refrigerant of the vehicle-mounted refrigerating system to the cold storage medium and / or transmitting the cooling capacity to air through the wall of the cooling channel. Optionally, a second heat exchange structure is arranged in the cooling channel to further strengthen heat exchange of the air. By optimizing the heat exchange structure, the efficiency of refrigerating and cold accumulation by using the vehicle-mounted refrigerating system is improved.

The invention discloses a flow field peeping type PIV measuring system and method in a backflow combustion chamber, and belongs to the technical field of flow field measurement in the backflow combustion chamber of an aero-engine, the flow field peeping type PIV measuring system in the backflow combustion chamber comprises a cooling purging device and a laser endoscope and / or a camera endoscope arranged in the cooling purging device; a cooling liquid channel, a purging gas channel and an endoscope channel which are not communicated with one another are arranged in the cooling purging device; the cooling liquid channel comprises a cooling liquid inlet channel from the connecting end to the detection end and a cooling liquid outlet channel from the detection end to the connecting end; the purging gas channel comprises a gas inlet located at the connecting end and a gas outlet located at the detecting end. The detection end is provided with the airflow guide structure, so that the purging gas flows to the end face of the endoscope channel along the end face of the detection end in a wall-attached mode, a stable wall-attached airflow barrier is formed, high-temperature fuel gas and soot are prevented from making direct contact with the mirror face of the endoscope, and mirror face pollution is effectively prevented.

The invention provides an intelligent control method and system for a refrigeration house, and relates to the field of control. A refrigeration house space thermodynamic diagram model is constructed based on temperature measuring points, and a historical temperature sequence, a house door opening and closing state sequence, cargo warehouse-in and warehouse-out records and external environment parameters are obtained; predicting a temperature change track of each node in a future control time domain by using a space-time diagram convolutional network; establishing an equipment health state evaluation model based on a hidden Markov model, evaluating the health state of each refrigeration compressor unit and quantifying the health state into an equipment health index; and solving the rolling optimization objective function in the control time domain to obtain an optimal start-stop time sequence and operation power combination instruction of each refrigeration compressor unit and auxiliary equipment, and issuing the combination instruction to a corresponding field controller for execution. The temperature change of each area in the refrigeration house can be accurately predicted, the operation load can be reasonably distributed according to the health condition of the unit, the service life of equipment is effectively prolonged, and the sudden failure risk and the maintenance cost of the whole life cycle are reduced.

The invention relates to the technical field of cold storage equipment, in particular to intelligent regulation and control phase change cold storage equipment, an energy-saving refrigeration house and an intelligent regulation and control method of the energy-saving refrigeration house. The cold storage equipment comprises a plurality of phase change cold storage modules and an intelligent adjusting module, the phase change cold storage modules are all arranged at the top of the refrigeration house, the multiple phase change cold storage modules are divided into the fixed phase change cold storage modules and the movable phase change cold storage modules, and the intelligent adjusting module comprises a processor, a temperature sensing module and a driving mechanism. The driving mechanism is used for driving the movable phase change cold storage module to move up and down in the vertical direction. The energy-saving refrigeration house comprises a refrigerating unit, a goods shelf and the intelligent regulation and control phase change cold storage equipment. On the basis of an existing fixed PCM technology, position adjustability and intelligent feedback serve as the core, in the night cold charging stage, the phase change cold storage module descends to the optimal cold charging position according to a feedback signal of a temperature probe, the cold charging speed of the phase change cold storage module is increased, and efficient and intelligent operation of a cold storage system of the refrigeration house is ensured.

The invention discloses a broiler processing workshop refrigeration house suspended ceiling air cooler which comprises an air cooler body, a suspended ceiling device is installed above the air cooler body, a machine body shell is arranged in the air cooler body, a plurality of protective covers are installed on the surface of the machine body shell, draught fans cover the protective covers, a controller is arranged beside one protective cover, and a dustproof net rotary connection base is embedded outside the protective cover. A water guiding assembly is fixed to the bottom of the machine body shell, even number of auxiliary hanging rods are installed on the surface of the machine body shell, even number of connecting hanging lugs are arranged on the two sides of the machine body shell, and a turbulent flow device is nested in the top of the machine body shell. A cover plate is arranged in the turbulent flow device, and an even number of shaft fixing seats are evenly installed on the two sides of the cover plate. The turbulent flow device is installed on the machine body shell, and the turbulent flow device is made to be perpendicular to the fin planes, so that under the driving of airflow impact, the turbulent flow pieces generate elastic deformation in the fixing base, surrounding air is driven to form local turbulent flow, the continuity of a condensed water film is destroyed, and the frost crystal nucleation and growth rate is delayed; and the stability of the warehouse temperature is indirectly guaranteed.

The invention discloses a rapid freezing device for abalone production and processing, and relates to the technical field of freezing, the rapid freezing device comprises an outer frame, a conveying assembly, a cooling assembly and a pre-cooling assembly, and rapid freezing of abalones is completed through cooperation of the conveying assembly, the cooling assembly and the pre-cooling assembly. Liquid nitrogen is sprayed to abalones conveyed on the conveying assembly through the annular cooling pipe and the nozzles so that the abalones can be quickly frozen through the liquid nitrogen, and the liquid nitrogen is stirred and disturbed through the cold air circulation mechanism so that it can be ensured that the liquid nitrogen makes full contact with the abalones in multiple directions and freezes the abalones; the tail end of the annular cooling pipe is communicated with the pre-cooling pipe through the arranged connecting pipe, so that residual liquid nitrogen in the annular cooling pipe is conveyed to the pre-cooling area, the pre-cooling pipe sprays the residual liquid nitrogen conveyed into the pre-cooling pipe from the air spraying groove to the abalones just entering the outer frame, and therefore the residual liquid nitrogen is used for pre-freezing the abalones; the freezing speed of the abalones is accelerated.

The invention discloses microelectronic magnetic force detection equipment and a method thereof, and belongs to the technical field of microelectronic magnetic force. The microelectronic magnetic force detection equipment comprises an equipment main body, a locking mechanism, a clamping mechanism and a detection mechanism; the lower portion of the equipment body is connected with the locking mechanism, the upper portion of the equipment body is connected with the clamping mechanism, and the detection mechanism is arranged on the right side of the equipment body. By means of the mode, the function of continuous feeding and discharging is achieved through the clamping mechanism and the locking mechanism, detection continuity is achieved, automatic operation is achieved in the whole process, and the operation stability is achieved while the working efficiency is improved; the detection capability is further expanded by adopting an array form of the atomic magnetometers, multi-angle synchronous detection can be realized after a plurality of atomic magnetometers are combined into an array, and meanwhile, the surface of the chip is cooled by blowing air through the cooling pipes at different angles, so that non-uniform temperature of the magnetic core in the detection process is prevented, and the detection precision is improved. And the stability of magnetic force detection is improved.

A refrigerator may include: a body, a storage compartment inside the body, a thermoelectric module on an upper portion of the storage compartment and including: a thermoelectric element including: a heating and a cooling portion, a dissipating and a cooling sink in contact with the heating and cooling portion, respectively; a heat dissipation (HD) fan configured to generate an airflow, a HD duct having an inlet and outlet, the HD duct on an upper surface of the body and configured to guide the airflow through the inlet to the dissipating sink to exchange heat with the dissipating sink, and then out the outlet; and a dust filter mountable on the inlet and configured so that, with the dust filter mounted on the inlet and the HD fan generating the airflow, the dust filter prevents foreign substances in the airflow from entering inside the HD duct through the air inlet.

A method for controlling a vehicle-mounted refrigerator includes: in response to determining that a battery power is less than or equal to a preset threshold power and a vehicle state is a powered-on state or a startup state, controlling the vehicle-mounted refrigerator to be turned off, and in response to turning off the vehicle-mounted refrigerator, turning off a delay switch; in response to determining that the battery power is greater than the threshold power and determining that the vehicle state is the powered-on state or the startup state, turning on the delay switch for the vehicle-mounted refrigerator; and in response to determining that the working duration is set for the vehicle-mounted refrigerator, turning on the vehicle-mounted refrigerator when the vehicle state becomes a powered-off state, and controlling the vehicle-mounted refrigerator to be in a turned-on state or a turned-off state according to a timing process for the working duration.

The invention relates to the field of intelligent control, and discloses a refrigerator multi-parameter collaborative awareness and resonance intelligent wakeup control method, which comprises the following steps: dynamically acquiring temperature, humidity and door state signals and adjusting the weights of the signals, extracting the resonant frequency offset by combining the vibration spectrum of a compressor, and performing intelligent wakeup and refrigeration duration prediction based on the characteristics. And credibility evaluation, a self-learning mapping model and an interference filtering mechanism are introduced. Compared with a traditional single-parameter or fixed threshold value control mode, the control logic is driven through physical quantity changes, under triggering of a door state event, a three-dimensional linkage relation of an environment state, a physical signal and a control decision is formed, timely sensing and accurate response to changes of the internal thermal characteristics of the refrigerator are achieved, and the problems of data splitting and lag control are solved.

The utility model discloses an efficient cooling-water machine which comprises a machine shell, and an installation cavity is formed in the machine shell. The water tank is provided with a water return connector and a water outlet connector. The heat exchanger is provided with a first heat exchange pipe and a second heat exchange pipe, one end of the first heat exchange pipe is communicated with the water return connector, and the other end of the first heat exchange pipe is communicated with a pipeline of external equipment; the refrigeration assembly comprises a compressor, a condenser, a drying filter and a capillary tube, an outlet of the compressor communicates with an inlet of the condenser, an outlet of the condenser communicates with an inlet of the drying filter, an outlet of the drying filter communicates with one end of the capillary tube, and the other end of the capillary tube communicates with one end of the second heat exchange tube. The other end of the second heat exchange pipe communicates with an inlet of the compressor. Heat exchange between water in the water tank and a refrigerant is achieved through the first heat exchange pipe and the second heat exchange pipe of the heat exchanger, cooling is conducted through cold water in the water tank, and the cooling amount and the cooling efficiency are improved.

The invention belongs to the field of vacuum pumps, and provides a vacuum pump and application thereof in refrigerators.The vacuum pump comprises a pump body, the pump body is composed of a bottom cover, a middle cover and an end cover, the middle cover is located between the bottom cover and the end cover, a motor is arranged on the side, away from the middle cover, of the bottom cover, and an output shaft of the motor extends to the inner side of the bottom cover to be connected with an eccentric wheel; the outer edge of the eccentric wheel is in contact with a leather cup support slidably connected with the bottom cover, and a guide hole is formed in the middle of the leather cup support. A leather cup and a steel needle linkage mechanism are adopted to replace an electromagnetic valve, a motor drives an eccentric wheel to drive a leather cup support to do reciprocating motion, a pull cup is pulled to do reciprocating deformation in the motion process, reciprocating air exhaust is conducted by changing the size of the space of a pump body cavity, working noise is effectively controlled, and meanwhile the air exhaust speed is increased; and compared with a traditional electromagnetic valve, the volume of the low-oxygen fresh-keeping electromagnetic valve is effectively reduced, and the space utilization rate in the working process is improved.