Refrigeration and heating device, and heating and cooling control method

Abstract

The present application discloses a refrigeration and heating device, and a heating and cooling control method. The device comprises a driver, a refrigeration and heating generator, and a medium circulation unit; the refrigeration and heating generator comprises a flow cavity, a medium, and a solid-state elastocaloric material unit; the medium circulation unit comprises a pipe and a heat exchange unit; the pipe is communicated with the flow cavity; during heating, when the solid-state elastocaloric material unit is loaded and a phase change occurs, heat is generated to heat the medium in the flow cavity, the heated medium is conveyed to the heat exchange unit by means of the pipe for heating, and the medium enters the flow cavity by means of the pipe; when the solid-state elastocaloric material unit is unloaded and an inverse phase change occurs, refrigeration is generated to cool the medium in the flow cavity, the cooled medium is conveyed by means of the pipe, and the medium enters the flow cavity by means of the pipe; or, during refrigeration, the solid-state elastocaloric material unit is unloaded, the cooled medium is conveyed to the heat exchange unit by means of the pipe for cooling, and the medium enters the flow cavity by means of the pipe; and the solid-state elastocaloric material unit is loaded, the heated medium is conveyed by means of the pipe, and the medium enters the flow cavity by means of the pipe.

Description

Refrigeration and heating device and cold and heat control method

[0001] The present application claims priority from the patent entitled: A refrigeration and heating device and cold and heat control method, Chinese patent application No. CN202411385975.0, filed on September 30, 2024. The disclosure of the prior application is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application belongs to the technical field of refrigeration and heating, and particularly relates to a refrigeration and heating device and cold and heat control method. BACKGROUND

[0003] The development of space refrigeration and heating technology is an important guarantee for people to maintain a high-quality life in modern times. Common space refrigeration and heating systems include using air conditioners to lower or raise the temperature of the surrounding space, using refrigerators to store low-temperature items inside, and using warm air equipment to maintain a constant temperature in a local space.

[0004] In the prior art, the control of space temperature is often achieved by gas compression type refrigerators. However, under the background of sustainable development, this refrigeration and heating method has many problems: first, the refrigerants used by gas compression type refrigerators (such as chlorine and bromine refrigerants) are discharged in large quantities into the environment, causing a sharp decrease in atmospheric ozone content and irreversible damage to the atmosphere. Although existing environmentally friendly refrigerants (such as fluorine and ammonia refrigerants) have reduced environmental hazards, they have the disadvantages of being flammable and explosive, which poses a significant safety risk when used. Second, the energy conversion rate of gas compression for refrigeration and heating is very low, and most of the electrical energy is not effectively converted, resulting in energy waste. TECHNICAL PROBLEM

[0005] The purpose of the present application is to provide a refrigeration and heating device and cold and heat control method to solve the technical problems of the space temperature control method using gas compression type refrigerators in the prior art, which is prone to harm the environment, is dangerous, and has low conversion efficiency. TECHNICAL SOLUTION

[0006] The present application provides a refrigeration and heating device, comprising: a driver, a refrigeration and heating generator, and a medium circulation unit; wherein the refrigeration and heating generator comprises: a flow cavity, a medium, and a solid elastic material unit; the medium circulation unit comprises: a pipeline and a heat exchange unit, the pipeline is in communication with the flow cavity;

[0007] When heating, the driver loads the solid elastic material unit, the solid elastic material unit generates heat when phase change to warm the medium in the flow cavity, the medium circulation unit transports the warmed medium to the heat exchange unit through the pipeline for heating, and the medium in the medium circulation unit enters the flow cavity through the pipeline; and the driver unloads the solid elastic material unit, the medium circulation unit transports the cooled medium away through the pipeline, and the medium in the medium circulation unit enters the flow cavity through the pipeline.

[0008] Or, when cooling, the driver unloads the solid elastic material unit, the medium circulation unit transports the cooled medium to the heat exchange unit through the pipeline for cooling, and the medium in the medium circulation unit enters the flow cavity through the pipeline; and the driver loads the solid elastic material unit, the medium circulation unit transports the warmed medium away through the pipeline, and the medium in the medium circulation unit enters the flow cavity through the pipeline.

[0009] Further, the pipeline comprises a first pipeline and a second pipeline, and the first pipeline and the second pipeline are arranged at two ends of the refrigeration and heating generator.

[0010] The first pipeline is used for transporting the warmed medium to the heat exchange unit for heating, and the medium after heating in the heat exchange unit enters the flow cavity.

[0011] The second pipeline is used for transporting the cooled medium to the heat exchange unit for cooling, and the medium after cooling in the heat exchange unit enters the flow cavity.

[0012] Further, the heat exchange unit comprises a first heat exchange unit and / or a second heat exchange unit; the first pipeline is in communication with the first heat exchange unit, and is used for transporting the warmed medium to the first heat exchange unit for heating or transporting away; and the second pipeline is in communication with the second heat exchange unit, and is used for transporting the cooled medium to the second heat exchange unit for cooling or transporting away.

[0013] Further, the medium circulation unit comprises an energy exchanger.

[0014] The energy exchanger is directly or indirectly in communication with the pipeline, and is used for transporting away the cold of the cooled medium when heating or transporting away the heat of the warmed medium when cooling.

[0015] Further, the energy exchanger is also used for storing the cooled medium or the warmed medium.

[0016] Further, the pipeline comprises an outlet pipeline and an inlet pipeline, the inlet pipeline being in communication with the energy exchanger;

[0017] The outlet pipeline is used for conveying the heated or cooled medium to the heat exchange unit and making the medium in the energy exchanger flow into the flow cavity.

[0018] Further, the outlet pipeline comprises a first outlet pipeline and a second outlet pipeline.

[0019] The first outlet pipeline and the second outlet pipeline are respectively arranged at two ends of the refrigeration and heating generator and are respectively used for conveying the heated medium and the cooled medium.

[0020] The inlet pipeline is arranged at any one end of the refrigeration and heating generator and is in communication with the energy exchanger to make the medium enter the flow cavity.

[0021] Further, the inlet pipeline comprises a first inlet pipeline and a second inlet pipeline.

[0022] The first inlet pipeline and the second inlet pipeline are both in communication with the energy exchanger.

[0023] When refrigerating, the second outlet pipeline conveys the cooled medium to the heat exchange unit, the medium is heated after heat exchange and then enters the energy exchanger, and the medium flows into the flow cavity through the second inlet pipeline; or, when heating, the first outlet pipeline conveys the heated medium to the heat exchange unit, the medium is cooled after heat exchange and then enters the energy exchanger, and the medium flows into the flow cavity through the first inlet pipeline.

[0024] Further, the inlet pipeline comprises a first inlet pipeline and a second inlet pipeline; the first outlet pipeline and the first inlet pipeline are both in communication with the heat exchange unit, the first outlet pipeline is used for conveying the heated or cooled medium to the heat exchange unit for heating or cooling, and the first inlet pipeline is used for making the medium after heat exchange flow into the flow cavity.

[0025] The second outlet pipeline and the second inlet pipeline are both in communication with the energy exchanger, and are used for conveying the cooled medium to the energy exchanger when heating or conveying the heated medium to the energy exchanger when refrigerating.

[0026] Further, the refrigeration and heating device further comprises a pump body arranged on the pipeline.

[0027] Further, the refrigeration and heating device further comprises a flow control device arranged at the connection between the pipeline and the heat exchange unit and the connection between the pipeline and the energy exchanger.

[0028] Further, the refrigeration and heating device further comprises a controller configured to control the start and stop of the driver, the pump body and the flow controller.

[0029] Further, the heat exchange unit comprises a blower.

[0030] Further, the solid-state elastic material unit in the refrigeration and heating generator is a plurality of hollow structures arranged in sequence.

[0031] Further, the refrigeration and heating generator further comprises a cylinder, and the plurality of solid-state elastic material units arranged in sequence are arranged in the cylinder, and the gap between the solid-state elastic material units and the cylinder forms a second flow cavity, and the first flow cavity and the second flow cavity are communicated through a through hole.

[0032] Further, the refrigeration and heating generator is a plurality of generators, comprising a first refrigeration and heating generator and a second refrigeration and heating generator; the driver comprises a motor and a rotating wheel, and the rotating wheel comprises a protrusion.

[0033] The motor drives the rotating wheel to rotate, so that the protrusion on the rotating wheel applies stress to the first refrigeration and heating generator, and the other parts of the rotating wheel unload stress from the second refrigeration and heating generator.

[0034] The refrigeration and heating device provided by the application is applied to an air conditioner, a refrigerator or a heat pump.

[0035] The application provides a cold and hot control method, which is applied to the refrigeration and heating device as described above, and comprises the following steps.

[0036] Obtaining a set temperature and an ambient temperature;

[0037] According to the set temperature and the ambient temperature, the running frequency of the driver loading or unloading the solid-state elastic material unit and the heat conduction parameter of conducting the heat or the cold are determined;

[0038] According to the running frequency and the heat conduction parameter, the refrigeration and heating generator is controlled to run so that the ambient temperature reaches the set temperature.

[0039] Further, the cold and hot control method further comprises the following steps.

[0040] Obtaining historical data, the historical data comprising: the time length of refrigeration or heating to a preset temperature and the running frequency and heat conduction parameter of the driver corresponding to the time length, wherein the heat conduction parameter comprises: the heat conduction coefficient of the medium, the specific heat capacity of the medium, the cross-sectional area of the flow cavity, the specific surface area of the flow cavity and the pump pressure parameter;

[0041] inputting the historical data into a preset neural network model to obtain a refrigeration and heating optimal parameter model, and determining an optimal operation frequency corresponding to each preset temperature and a heat conduction parameter matched with the optimal operation frequency according to the refrigeration and heating optimal parameter model.

[0042] Further, the operation frequency of the driver and the heat conduction parameter for conducting the heat or the cold are determined according to the set temperature and the ambient temperature, including:

[0043] When the temperature difference between the set temperature and the ambient temperature is greater than a first preset temperature, a preset maximum operation frequency is determined as the operation frequency of the driver.

[0044] According to the maximum operation frequency, an optimal heat conduction parameter matched therewith is searched as the heat conduction parameter.

[0045] Further, the operation frequency of the driver and the heat conduction parameter for conducting the heat or the cold are determined according to the set temperature and the ambient temperature, including:

[0046] When the temperature difference between the set temperature and the ambient temperature is less than the first preset temperature and greater than a second preset temperature, an optimal operation frequency matched with the set temperature and a heat conduction parameter matched with the optimal operation frequency are searched as the operation frequency of the driver and the heat conduction parameter.

[0047] Further, the cold and heat control method further includes:

[0048] When the temperature difference between the set temperature and the ambient temperature is less than the second preset temperature, an optimal operation frequency and a heat conduction parameter are searched according to the set temperature.

[0049] The optimal operation frequency and the pump pressure parameter in the heat conduction parameter are kept unchanged, and the cross-sectional area of the flow cavity is adjusted until the ambient temperature reaches the set temperature. Beneficial effects

[0050] The refrigeration and heating device provided in the application comprises a driver, a refrigeration and heating generator and a medium circulation unit; wherein the refrigeration and heating generator comprises a flow cavity, a medium and a solid elastic material unit; the medium circulation unit comprises a pipeline and a heat exchange unit, and the pipeline is in communication with the flow cavity; when heating, the driver loads the solid elastic material unit, heat is generated when the solid elastic material unit changes phase, the medium in the flow cavity is heated, the medium after being heated is transported to the heat exchange unit by the pipeline for heating, and the medium in the medium circulation unit enters the flow cavity through the pipeline; and the driver unloads the solid elastic material unit, cold is generated when the solid elastic material unit changes phase reversely, the medium in the flow cavity is cooled, the medium after being cooled is transported away by the pipeline, and the medium in the medium circulation unit enters the flow cavity through the pipeline; or when refrigeration, the driver unloads the solid elastic material unit, the medium after being cooled is transported to the heat exchange unit by the pipeline for refrigeration, and the medium in the medium circulation unit enters the flow cavity through the pipeline; and the driver loads the solid elastic material unit, the medium after being heated is transported away by the pipeline, and the medium in the medium circulation unit enters the flow cavity through the pipeline.

[0051] The refrigeration and heating device in the application transports the medium after being heated and the medium after being cooled in the flow cavity to the heat exchange unit through the pipeline for refrigeration or heating, and the generation of heat and cold is based on the phase change of the solid elastic material unit, does not involve harmful substances, is safe and efficient, and can be applied in various fields. BRIEF DESCRIPTION OF DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0053] Fig. 1 is a schematic diagram of a refrigeration and heating device provided in the application;

[0054] Fig. 2 is a schematic diagram of a refrigeration and heating device provided in the application;

[0055] Fig. 3 is a schematic diagram of a refrigeration and heating device provided in the application;

[0056] Fig. 4 is a schematic diagram of a refrigeration and heating device provided in the application;

[0057] Fig. 5 is a schematic diagram of a refrigeration and heating device provided in the application;

[0058] Fig. 6 is a schematic diagram of a refrigeration and heating device provided by the present application;

[0059] Fig. 7 is a flowchart of a cold and heat control method provided by the present application. Embodiments of the present application

[0060] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0061] The present application provides a refrigeration and heating device, as shown in Fig. 1 is a schematic diagram of a refrigeration and heating device, comprising: a driver, a refrigeration and heating generator and a medium circulation unit; wherein the refrigeration and heating generator comprises: a flow cavity, a medium and a solid elastic material unit; the medium circulation unit comprises: a pipeline and a heat exchange unit, the pipeline is in communication with the flow cavity.

[0062] When heating, the driver loads the solid elastic material unit, the solid elastic material unit generates heat when phase change to warm the medium in the flow cavity, the medium circulation unit transports the warmed medium to the heat exchange unit for heating through the pipeline, and the medium in the medium circulation unit enters the flow cavity through the pipeline; and the driver unloads the solid elastic material unit, the solid elastic material unit generates cold when inverse phase change to cool the medium in the flow cavity, the medium circulation unit transports the cooled medium away, and the medium in the medium circulation unit enters the flow cavity through the pipeline. It can be understood that when heating, if the loading and unloading of the driver exist at the same time, the warmed medium generated by the loading is used for heating, while the cooled medium generated by the unloading is transported away for subsequent use, note that it is not out of the refrigeration and heating device. And in the whole refrigeration and heating device, the medium is always in circulation, that is, the warmed medium will be cooled after heating in the heat exchange unit, and then return to the flow cavity.

[0063] Or, when refrigeration, the driver unloads the solid elastic material unit, the medium circulation unit transports the cooled medium to the heat exchange unit for cooling through the pipeline, and the medium in the medium circulation unit enters the flow cavity through the pipeline; and the driver loads the solid elastic material unit, the medium circulation unit transports the warmed medium away through the pipeline, and the medium in the medium circulation unit enters the flow cavity through the pipeline. It can be understood that when refrigeration, if the loading and unloading of the driver exist at the same time, the cooled medium generated by the unloading is used for cooling, while the warmed medium generated by the loading is transported away for subsequent use, note that it is not out of the refrigeration and heating device. And in the whole refrigeration and heating device, the medium is always in circulation, that is, the cooled medium will be warmed after cooling in the heat exchange unit, and then return to the flow cavity.

[0064] Specifically, in the refrigeration and heating generator, the solid elastic material unit adopts a solid elastic material, which is a solid material that can release or absorb heat during phase change. The solid elastic material can be selected from shape memory alloy, natural rubber, synthetic polymer, plastic crystal, etc. Preferably, the solid elastic material is one of nickel-titanium alloy, copper-aluminum-manganese alloy, nickel-manganese-titanium alloy, nickel-titanium-copper alloy, nickel-titanium-copper-cobalt alloy, and nickel-iron-gallium alloy. The refrigeration and heating device is manufactured by using the principle that shape memory alloy releases heat during the phase change from austenite to martensite, and absorbs heat during the reverse phase change from martensite to austenite.

[0065] The solid elastic material unit made of the solid elastic material can be one or multiple. In order to avoid material buckling, the solid elastic material unit can also be made into a sheet shape. In one embodiment, in order to facilitate implementation and increase heat conduction, the solid elastic material is arranged in a tubular shape (for example, spiral shape, honeycomb shape, radial shape, etc.). That is, the solid elastic material unit contains a hollow part, and multiple solid elastic material units are sequentially connected so that the respective hollow parts form a first flow cavity. In another embodiment, in order to increase heat conduction by expanding the flow cavity, a sleeve is arranged outside the solid elastic material unit, so that the inner wall of the sleeve and the outer wall of the solid elastic material unit form a second flow cavity. In some embodiments, one or more sets of solid elastic material units that are sequentially connected can be arranged in the sleeve, or the refrigeration and heating generator can be composed of multiple sleeves. In some embodiments, a through hole is arranged on the solid elastic material unit, so that the first flow cavity and the second flow cavity are communicated, thereby increasing heat conduction when the medium flows in the flow cavity. In some embodiments, an inlet and an outlet for facilitating the flow of the medium are arranged on the solid elastic material unit or the sleeve, and a driving element is arranged in connection with the solid elastic material unit, so as to facilitate loading or unloading of the drive. In other embodiments, the refrigeration and heating generator can further include a fixing structure such as a bracket for fixing the solid elastic material unit. Here, no limitation is made as long as the solid elastic material unit can achieve loading and unloading of the drive. In the present embodiment, the medium can be selected from liquid medium or fluid medium, for example, water, alcohol, liquid metal, organic matter, etc.

[0066] In the embodiments of the present application, the motor in the driver can be selected from a DC motor, a stepping motor, a permanent magnet synchronous motor, a servo motor, an AC synchronous motor or a torque motor, without limitation. For example, the refrigeration and heating generator can be multiple, including a first refrigeration and heating generator and a second refrigeration and heating generator, the driver includes a motor and a rotating wheel, the rotating wheel includes a protrusion, the motor drives the rotating wheel to rotate, so that the protrusion on the rotating wheel exerts stress on the first refrigeration and heating generator, and at the same time, the parts other than the protrusion unload stress on the second refrigeration and heating generator. For another example, the motor can be driven to control the loading assembly thereon to exert pressure or tension on the solid-state elastic clamping material unit in the refrigeration and heating generator, and unload the tension or pressure to realize loading and unloading of the solid-state elastic clamping material unit. In one embodiment, the loading assembly includes a main shaft, a rotating disc coaxially connected to one end of the main shaft, a rotating driving member in transmission connection with the rotating disc, and multiple lifting members. The rotating driving member drives the rotating disc to rotate relative to the main shaft, and the rotating shaft of the rotating disc coincides with the central shaft of the main shaft. Multiple groups of solid-state elastic clamping material units are arranged at intervals on the outer side of the main shaft around the central axis of the main shaft. One end of each lifting member is in contact with a solid-state elastic clamping material unit, and the other end is in contact with the bottom surface of the rotating disc. Multiple protrusions are arranged on the bottom surface of the rotating disc. With the rotation of the rotating disc, each protrusion is in contact with one of the lifting members to make the lifting member move downward under pressure. In actual use, each group of solid-state elastic clamping material units is in an unloading state when the lifting member contacts the bottom surface of the rotating disc outside the protrusion, and is in a loading state when the lifting member contacts the protrusion.

[0067] In the embodiments, the medium circulation unit is a unit for managing refrigeration and heating of the refrigeration and heating device, which includes a pipeline and a heat exchange unit, i.e. the heated or cooled medium is delivered to the heat exchange unit through the pipeline to realize heating or cooling. In some embodiments, the refrigeration and heating device further includes a controller, and the medium circulation unit further includes a pump body and a flow control device. The pump body is arranged on the pipeline, and the flow control device is arranged at the connection between the pipeline and the heat exchange unit, or the connection between the pipeline and other equipment, for controlling the communication, closure of the pipeline and the flow rate of the medium. The controller can be a chip, a microprocessor, a single-chip microcomputer, etc. The controller sends signals to the pump body and the flow control device through wireless or wired transmission. The pump body can be a pressure pump or a vacuum pump, and the flow control device can be an expansion valve, a wind valve, etc.

[0068] It should be noted that when the refrigeration and heating device is working, the driver periodically loads and unloads the solid elastic material unit, that is, the solid elastic material unit is always periodically heated and cooled. Therefore, in order to achieve refrigeration or heating, the medium circulating unit cooperates with the refrigeration and heating generator. For example, when heating, the driver loads the solid elastic material unit, the solid elastic material unit releases heat when the phase change from austenite to martensite occurs, and the medium in the flow cavity is heated. After a preset period of time (the medium can be heated to a preset temperature and the loading is not completed), the controller in the medium circulating unit sends a signal to start the first pump body arranged in the pipeline, and the pipeline transports the heated medium to the heat exchange unit for heating. When the loading is completed, the controller sends a signal to close the first pump body and start the second pump body to make the medium flow rapidly from the pipeline into the flow cavity. When the driver is unloaded, the solid elastic material unit absorbs heat when the reverse phase change from martensite to austenite occurs. Similarly, the controller sends a signal to start the first pump body and close the second pump body, and the pipeline transports the cooled medium away. For example, the medium can be heated in a cycle, heat exchange or storage utilization can be performed, and after a preset period of time (the cooled medium in the flow cavity is transported away), the controller sends a signal to close the first pump body and start the second pump body, so that the medium rapidly flows from the pipeline into the flow cavity, and the driver is unloaded.

[0069] When in the refrigeration function, the driver unloads the solid elastic material unit, the solid elastic material unit absorbs heat, and the medium in the flow cavity is cooled. At this time, the controller in the medium circulating unit sends a signal to start the first pump body arranged on the pipeline, and the pipeline transports the cooled medium to the heat exchange unit for cooling. When the cooled medium in the flow cavity is transported away, the controller sends a signal to close the first pump body and start the second pump body, so that the medium rapidly flows from the pipeline into the flow cavity, and the driver is unloaded. When the driver is loaded, the solid elastic material unit releases heat, the controller sends a signal to start the first pump body and close the second pump body, and the pipeline transports the heated medium away. For example, the medium can be cooled in a cycle, heat exchange or storage utilization can be performed, and when the heated medium in the flow cavity is transported away, the controller sends a signal to close the first pump body and start the second pump body, so that the medium rapidly flows from the pipeline into the flow cavity, and the driver is loaded.

[0070] It should be noted that the first pump body and the second pump body can be vacuum pumps, magnetic pumps, mechanical pumps, etc. The installation position is determined according to the selected type, which is not limited here, as long as the above technical effects can be achieved.

[0071] In the embodiment of the present application, when the medium after being heated or cooled is transported out of the flow cavity by the pipeline, the flow control device is used to respectively connect the heat exchange unit, the device for recycling the medium or the device for direct discharge, wherein the device for recycling the medium or the device for direct discharge and other devices belong to the internal structure of the system of the refrigeration and heating device, thereby forming the overall circulation of the medium. That is, in the heating process, the controller sends a signal to the flow control device to connect the heat exchange unit and disconnect other connected devices, so as to transport the heated medium to the heat exchange unit. When the first pump body is closed and the second pump body is opened, the medium after heat exchange in the heat exchange unit is transported back to the flow cavity by the pipeline. In the unloading refrigeration process, the medium in the flow cavity is cooled, the refrigeration and heating generator is connected to other devices through the pipeline, and the cooled medium is transported to other devices and then transported away. Then, the medium for backflow (for example, a medium source, a cooling tower, etc.) is backflowed to the flow cavity through the pipeline. In the embodiment, the first pump body on the pipeline is used to transport the medium in the flow cavity to the heat exchange unit, and the second pump body is used to transport the medium back to the flow cavity. In the embodiment, the controller can be used to send signals to the first pump body and the second pump body according to the preset time period to control the opening and closing according to the operation logic described above. That is, in the embodiment of the present application, after the heated medium or the cooled medium is transported away from the flow cavity, the medium is backflowed to the flow cavity, and the whole medium is repeatedly circulated in the refrigeration and heating device.

[0072] In some embodiments, as shown in FIG. 2, the pipeline includes a first pipeline and a second pipeline, and the first pipeline and the second pipeline are arranged at two ends of the refrigeration and heating generator. The first pipeline is used to transport the heated medium to the heat exchange unit for heating, and the medium after being heated in the heat exchange unit enters the flow cavity. The second pipeline is used to transport the cooled medium to the heat exchange unit for cooling, and the medium after being cooled in the heat exchange unit enters the flow cavity.

[0073] It should be noted that the first pipeline and the second pipeline can be connected to the device for recycling the medium or the device for direct discharge to transport the cooled medium in the heating process and the heated medium in the refrigeration process.

[0074] In some embodiments, as shown in FIG. 3, the heat exchange unit includes a first heat exchange unit and a second heat exchange unit; a first pipeline is in communication with the first heat exchange unit for conveying the heated medium to the first heat exchange unit for heating or conveying away, and a second pipeline is in communication with the second heat exchange unit for conveying the cooled medium to the second heat exchange unit for cooling or conveying away. The first pipeline and the second pipeline are respectively connected with the first heat exchange unit and the second heat exchange unit, and both are provided with a first pump body and a second pump body. When heating, the first pump body is controlled to start to convey the heated medium to the first heat exchange unit, the second pump body is controlled to start to return the medium in the first heat exchange unit to the flow cavity, the first pump body on the second pipeline is controlled to convey the cooled medium to the second heat exchange unit, and the second pump body on the second pipeline is controlled to return the medium in the second heat exchange unit to the flow cavity. In this embodiment, the first heat exchange unit and the second heat exchange unit can be units formed by long pipelines, and can be heat dissipation fins, and the specific shape and form can be the same or different. For example, in the application scenario of heating, the first heat exchange unit can be set as a fin installed in the environment to be heated, and the second heat exchange unit can be set as a long pipeline, so that the heated medium can be cooled by the fin, and the cooled medium can be exchanged with the environment by the pipeline.

[0075] In order to more conveniently manage the heat of the refrigeration and heating device, so that the heat can also be circulated or utilized, in an embodiment of the present application, the medium circulation unit further includes an energy exchanger in direct or indirect communication with the pipeline for conveying away the cold of the cooled medium when heating or conveying away the heat of the heated medium when cooling. In actual application, the energy exchanger can be a long liquid outlet pipeline, so that the medium can achieve the purpose of heat exchange during flow, the energy exchanger can be a heat dissipation device such as a fin, and can also be a cooling circulation pool, which is not limited here as long as the purpose of heat exchange can be achieved. In order to save resources, the energy exchanger is also used to store the cooled medium or the heated medium, further, the energy exchanger includes a heat storage pool and a cold storage pool; the heat storage pool is used to store the heated medium; and the cold storage pool is used to store the cooled medium. In this embodiment, the shape and state of the heat storage pool and the cold storage pool are not limited, which can be a container or a pipeline, as long as the effect of secondary utilization of the heat or cold can be achieved.

[0076] In some embodiments, the first pipe and the second pipe are also in communication with the energy exchanger. A flow controller is arranged on the first pipe and the second pipe. In the heating process, when the heated medium is delivered, the first pipe is in communication with the heat exchange unit and disconnected from the energy exchanger, so that the heated medium is delivered to the heat exchange unit by the first pipe, and the second pipe is disconnected from the heat exchange unit and connected to the energy exchanger. Thus, after the delivery of the heated medium, the cooled medium can be delivered to the energy exchanger by the second pipe when the cold energy is generated by the unloading of the solid elastic material unit. Similarly, in the cooling process, when the cooled medium is delivered, the second pipe is in communication with the heat exchange unit and disconnected from the energy exchanger, so that the cooled medium is delivered to the heat exchange unit by the second pipe, and the first pipe is disconnected from the heat exchange unit and connected to the energy exchanger, so that the heated medium can be delivered to the energy exchanger by the first pipe when the heat is generated by the loading of the solid elastic material unit. It should be noted that the controller controls the flow controllers of the first pipe and the second pipe connected to the heat exchange unit, and controls the flow controllers of the first pipe and the second pipe connected to the energy exchanger. The control logic can refer to the above-mentioned cooling and heating control logic, which will not be described here.

[0077] In other embodiments, in order to adapt to the internal structure of the cooling and heating device, the pipes arranged in some scenarios include an outlet pipe and an inlet pipe. The inlet pipe is in communication with the energy exchanger. When the temperature of the medium tends to room temperature after the heat exchange unit supplies cold or heat to the environment, the heat exchange unit can be connected to the inlet pipe to return the medium after supplying heat or cold to the flow cavity to supplement the medium.

[0078] Specifically, the connection relationship between the energy exchanger and the outlet pipe and the inlet pipe can refer to the following embodiments. The energy exchanger is in communication with the inlet pipe, the outlet pipe, and the heat exchange unit, and a flow controller is arranged at the connection. When heating, the heated medium is controlled to be disconnected from the energy exchanger and connected to the heat exchange unit, so that the heated medium flows into the heat exchange unit to supply heat. After the heat supply is completed, the medium is connected to the energy exchanger to flow into the energy exchanger. Then, the cooled medium is controlled to be connected to the energy exchanger and disconnected from the heat exchange unit, so that the cooled medium flows into the energy exchanger. At the same time, the inlet pipe delivers the medium in the energy exchanger to the flow cavity. The working principle in the cooling process is described above. In other embodiments, the heat exchange unit can also be connected to the inlet pipe, and the inlet pipe and the outlet pipe can be arranged on both sides of the flow cavity.

[0079] As shown in Fig. 4, another structure schematic diagram of the refrigeration and heating device provided by the present application is shown, wherein the outlet pipeline comprises: a first outlet pipeline and a second outlet pipeline; the first outlet pipeline and the second outlet pipeline are respectively arranged at two ends of the refrigeration and heating generator and are both communicated with the heat exchange unit through the flow control device, and are respectively used for conveying the medium after temperature rising and the medium after temperature falling; the flow control device controls the heat exchange unit to be communicated with the first outlet pipeline or to be disconnected with the second outlet pipeline, or controls the heat exchange unit to be closed with the first outlet pipeline or to be communicated with the second outlet pipeline; the inlet pipeline is arranged at any one end of the refrigeration and heating generator and is communicated with the energy exchanger to make the medium enter the flow cavity.

[0080] As shown in Fig. 5, a structure schematic diagram of the refrigeration and heating device provided by the present application is shown, as shown in the figure, the inlet pipeline comprises: a first inlet pipeline and a second inlet pipeline; the first inlet pipeline and the second inlet pipeline are both communicated with the energy exchanger through the flow control device; the flow control device controls the energy exchanger to be communicated with the first inlet pipeline or to be communicated with the second inlet pipeline; in refrigeration, the second outlet pipeline conveys the medium after temperature falling to the heat exchange unit to exchange heat and then enters the energy exchanger, and the medium flows into the flow cavity through the second inlet pipeline; or, in heating, the first outlet pipeline conveys the medium after temperature rising to the heat exchange unit to exchange heat and then enters the energy exchanger, and the medium flows into the flow cavity through the first inlet pipeline. In the embodiment, the heat exchange unit comprises a first heat exchange unit and a second heat exchange unit; in refrigeration and heating, the medium after temperature falling is conveyed to the first heat exchange unit, and the medium after temperature rising is conveyed to the second heat exchange unit; in actual application, in refrigeration, the first heat exchange unit is arranged in the space to be refrigerated, and in heating, the second heat exchange unit is arranged in the space to be heated.

[0081] As shown in Fig. 6, a structure schematic diagram of the refrigeration and heating device provided by the present application is shown, the first outlet pipeline and the first inlet pipeline are both communicated with the heat exchange unit; the first outlet pipeline is used for conveying the medium after temperature rising or the medium after temperature falling to the heat exchange unit for heating or cooling; the first inlet pipeline is used for making the medium after heat exchange flow into the flow cavity; the second outlet pipeline and the second inlet pipeline are both communicated with the energy exchanger, and are used for conveying the medium after temperature falling to the energy exchanger in heating, or conveying the medium after temperature rising to the energy exchanger in refrigeration.

[0082] The present application also provides a cooling device of an air conditioner, a refrigerator, a heat pump and an energy storage device, which all comprise the refrigeration and heating device described above.

[0083] As shown in Fig. 7, the present application provides a cold and hot control method, which is applied to the refrigeration and heating device described above, and comprises the following steps:

[0084] S1, acquiring a set temperature and an ambient temperature.

[0085] In the embodiment of the present application, the user inputs the set temperature to the controller in the refrigeration and heating device through voice, key, touch or other ways, wherein the set temperature is the temperature reached after the refrigeration and heating device is refrigerated or heated, the environment temperature is the temperature of the target space (such as a room, a vehicle cabin, a computer room, etc.) or target object (such as a battery, electronic components, IT equipment, drinks, food, etc.) to which the refrigeration and heating device is intended to adjust the temperature, and the environment temperature varies according to the field to which the refrigeration and heating device is applied. When the refrigeration and heating device is applied to an air conditioner, the environment temperature is the indoor temperature of the air conditioner; when the refrigeration and heating device is applied to a refrigeration vehicle, the environment temperature is the temperature in the refrigeration vehicle cabin; and when the refrigeration and heating device is applied to electronic components, the environment temperature is the temperature of the electronic components to be cooled.

[0086] S2, determining the operation frequency of the driver to load or unload the solid elastic material unit and the heat conduction parameter of the heat or cold conduction according to the set temperature and the environment temperature.

[0087] In the embodiment, each operation cycle of the driver includes the loading time, the heat maintenance time, the unloading time and the cold maintenance time of the solid elastic material unit, wherein the heat maintenance time and the cold maintenance time are the time during which the driver stops working, i.e., the time during which the medium circulating unit delivers heat and cold to the heat exchange unit through the pipeline and adds new medium in the flow cavity. The heat conduction parameter is a parameter affecting the speed of the medium transferring heat or cold, including the specific heat capacity of the medium, the hollow cross-sectional area of the flow cavity, the specific surface area of the flow cavity and the pump pressure parameter, etc.

[0088] The refrigeration and heating device can change the heat or cold generated by changing the operation frequency of the driver and the heat conduction parameter of the heat or cold conduction to make the temperature reach a steady state. It should be noted that the faster the operation frequency of the driver, the more times the driver loads or unloads the solid elastic material unit in a unit of time, and under the same loading or unloading intensity, the heat or cold generated by a single time is constant, the more times, the more heat or cold generated by the solid elastic material unit in a unit of time. In addition, the heat maintenance time and the cold maintenance time in the operation cycle of the driver also have an important influence on the medium obtaining heat or cold, the shorter the heat / cold maintenance time, the less heat or cold obtained by the medium, and the longer the heat / cold maintenance time, the more heat or cold obtained by the medium, but when it is too long, the more heat or cold lost, therefore, the operation frequency (the reciprocal of the operation cycle) of the driver has an important influence on the heating capacity and the refrigeration capacity.

[0089] On the other hand, the heat conduction parameter of the heat conduction or cold conduction has a great influence on the temperature of the refrigeration and heating device. In the case of constant heat or cold generated, if the heat conduction parameter is small, the medium cannot transport the heat and cold to the heat exchange unit in time, or if the heat conduction parameter is large, the medium transmits faster and the heat or cold generated by the solid elastic card material unit is less. In both cases, the efficiency of the refrigeration and heating device is low. Therefore, in one embodiment of the present application, for each set temperature, the operating frequency of the driver and the heat conduction parameter matched with the operating frequency are determined to reduce energy loss and maximize the conduction of heat and cold.

[0090] To solve the above problems, the present application provides a method for determining the operating frequency of the driver loading or unloading the solid elastic card material unit and the heat conduction parameter of the heat conduction or cold conduction, comprising:

[0091] Step one, obtaining historical data, the historical data including: the time length of refrigeration or heating to a preset temperature and the operating frequency of the driver and the heat conduction parameter corresponding to the time length, wherein the heat conduction parameter includes: the heat conduction coefficient of the medium, the specific heat capacity of the medium, the hollow cross-sectional area of the flow cavity, the specific surface area of the flow cavity and the pump pressure parameter;

[0092] Step two, inputting the historical data into a preset neural network model for training to obtain a refrigeration and heating optimal parameter model, and determining the optimal operating frequency corresponding to each preset temperature and the heat conduction parameter matched with the optimal operating frequency according to the refrigeration and heating optimal parameter model.

[0093] In actual application, in order to determine the refrigeration or heating capacity to reach the preset temperature, in this embodiment, the time length of refrigeration or heating to the preset temperature is set as a characterization parameter of heating or refrigeration efficiency, and the time is short, which is considered as large refrigeration or heating capacity and high efficiency, and the time is long, which is considered as small refrigeration or heating capacity and low efficiency. In the obtained historical data, the operating frequency of the driver, the specific heat capacity of the medium, the hollow cross-sectional area of the flow cavity and the pump pressure parameter all correspond to the time length from a certain environment temperature to a certain set temperature, which are respectively used as input data and output data of the neural network model for training, and finally the optimal parameter model is obtained, that is, the driving frequency and the heat conduction parameter are input into the optimal parameter model, and the time length from a certain environment temperature to a certain set temperature can be obtained.

[0094] Through the above optimal parameter model, the driving frequency of the driver and the matched heat conduction parameter corresponding to the shortest time length from a certain environment temperature to a certain set temperature can be determined, and the corresponding relationship is stored for the application of the following embodiments.

[0095] In one embodiment of the present application, when the set temperature and the ambient temperature differ greatly, in order to make the ambient temperature reach the set temperature as soon as possible, the operating frequency of the driver and the heat conduction parameter of the heat or cold conduction are determined according to the set temperature and the ambient temperature, including the following steps:

[0096] Step one, when the temperature difference between the set temperature and the ambient temperature is greater than the first preset temperature, the preset maximum operating frequency is determined as the operating frequency of the driver;

[0097] Step two, the optimal heat conduction parameter matched with the maximum operating frequency is found as the heat conduction parameter.

[0098] In the present embodiment, as known from the foregoing, the greater the operating frequency, the more the number of loading or unloading per unit time, and the greater the heat or cold generated, therefore, in order to make the ambient temperature reach the set temperature as soon as possible, the maximum operating frequency obtained by the optimal parameter model is taken as the operating frequency of the driver, and the heat conduction parameter matched with the maximum operating frequency is taken as the heat conduction parameter of the present embodiment. It should be noted that, for the prepared refrigeration and heating device, the specific heat capacity of the medium is generally a fixed parameter, and the hollow cross-sectional area of the flow cavity and the pump pressure parameter can be used as variable parameters.

[0099] It should be noted that the refrigeration and heating device further comprises a temperature sensor, which compares the temperature in the current environment with the set temperature in real time, so as to determine the size of the temperature difference between the set temperature and the ambient temperature and the preset temperature.

[0100] In some embodiments, when the set temperature and the ambient temperature differ slightly, in order to reduce the temperature overload (the amount exceeding the set temperature), the operating frequency of the driver and the heat conduction parameter of the heat or cold conduction are determined according to the set temperature and the ambient temperature, including:

[0101] When the temperature difference between the set temperature and the ambient temperature is less than the first preset temperature and greater than the second preset temperature, the optimal operating frequency matched with the set temperature and the heat conduction parameter matched with the optimal operating frequency are found as the operating frequency and the heat conduction parameter.

[0102] In the present embodiment, when the set temperature and the ambient temperature differ slightly, the optimal operating frequency and the heat conduction parameter matched with the set temperature are taken as the operating parameters, which can reduce energy consumption on the one hand and prevent temperature overload on the other hand.

[0103] In some embodiments, the phenomenon of temperature overload or the phenomenon of the ambient temperature fluctuating greatly above and below the set temperature may also occur, in order to keep the ambient temperature constant within the preset range, in this case, further including:

[0104] Step one, when the temperature difference between the set temperature and the ambient temperature is less than the second preset temperature, the optimal operating frequency and the heat conduction parameter are found according to the set temperature;

[0105] Step two, keep the optimal operating frequency and the pump pressure parameter in the heat conduction parameter unchanged, adjust the cross-sectional area of the flow cavity until the ambient temperature reaches the set temperature.

[0106] It should be noted that when adjusting the pump pressure parameter, when the temperature exceeds the set temperature, the cold or heat is too much, which can be fine-tuned by reducing the cross-sectional area of the flow cavity to the heat conduction parameter, and when the temperature does not reach the constant temperature range of the set temperature within the preset time, the cross-sectional area of the flow cavity can be fine-tuned by increasing the cross-sectional area of the flow cavity. In the above embodiment, since the control of refrigeration and heating is dynamically performed, in actual application, a solid elastic material unit can be designed to include multiple layers of sheet shape, and since the cross-sectional area of the flow cavity is fine-tuned, one of the solid elastic material units is used as an adjustable unit, and a fixed part is arranged outside the solid elastic material unit. When adjusting the cross-sectional area of the flow cavity, the fixed part is used to apply force to the sheet-shaped solid elastic material unit to cause the sheet-shaped solid elastic material unit to stagger, thereby reducing the cross-sectional area of the flow cavity of the solid elastic material unit or increasing the cross-sectional area.

[0107] S3, control the refrigeration and heating generator to operate according to the operating frequency and the heat conduction parameter to make the ambient temperature reach the set temperature.

[0108] The refrigeration and heating control method in the application determines the operating frequency and the heat conduction parameter of the driver through the set temperature and the ambient temperature, so that the medium can transport the heat and cold generated by the solid elastic material unit to the heat exchange unit for heating or refrigeration. The heat generation in the method is based on the phase change of the solid elastic material unit, and does not involve harmful substances, which is safe and efficient, and can be applied to various fields.

[0109] The above is only a preferred embodiment of the application, and does not limit the application. Any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A refrigeration and heating device, characterized in that, The application relates to a refrigeration and heating generator and a medium circulation unit. The refrigeration and heating generator comprises a flow cavity, a medium and a solid-state elastic material unit. The medium circulation unit comprises a pipeline and a heat exchange unit, and the pipeline is communicated with the flow cavity. When heating, the driver loads the solid-state elastic material unit, the solid-state elastic material unit generates heat when phase changing to warm the medium in the flow cavity, the medium circulation unit transports the warmed medium to the heat exchange unit through the pipeline for heating, and the medium in the medium circulation unit enters the flow cavity through the pipeline; and the driver unloads the solid-state elastic material unit, the medium circulation unit transports the cooled medium away through the pipeline, and the medium in the medium circulation unit enters the flow cavity through the pipeline. Or, when refrigerating, the driver unloads the solid-state elastic material unit, the medium circulation unit transports the cooled medium to the heat exchange unit through the pipeline for refrigerating, and the medium in the medium circulation unit enters the flow cavity through the pipeline; and the driver loads the solid-state elastic material unit, the medium circulation unit transports the warmed medium away through the pipeline, and the medium in the medium circulation unit enters the flow cavity through the pipeline. The pipeline comprises a first pipeline and a second pipeline, and the first pipeline and the second pipeline are arranged at two ends of the refrigeration and heating generator.

2. The refrigeration and heating apparatus according to claim 1, wherein The first pipeline is used for transporting the warmed medium to the heat exchange unit for heating, and the heated medium in the heat exchange unit enters the flow cavity. The second pipeline is used for transporting the cooled medium to the heat exchange unit for refrigerating, and the refrigerated medium in the heat exchange unit enters the flow cavity. The heat exchange unit comprises a first heat exchange unit and / or a second heat exchange unit, the first pipeline is communicated with the first heat exchange unit and is used for transporting the warmed medium to the first heat exchange unit for heating or transporting away, and the second pipeline is communicated with the second heat exchange unit and is used for transporting the cooled medium to the second heat exchange unit for refrigerating or transporting away.

3. The refrigeration and heating apparatus according to claim 2, wherein The medium circulation unit comprises an energy exchanger.

4. The refrigeration and heating apparatus according to claim 1, wherein The energy exchanger is directly or indirectly communicated with the pipeline and is used for transporting away the cold of the cooled medium when heating or transporting away the heat of the warmed medium when refrigerating. The pipeline comprises an outlet pipeline and an inlet pipeline, and the inlet pipeline is communicated with the energy exchanger.

5. The refrigeration and heating apparatus according to claim 4, wherein The outlet pipeline is used for transporting the warmed or cooled medium to the heat exchange unit, and the medium in the energy exchanger flows into the flow cavity. The outlet pipeline comprises a first outlet pipeline and a second outlet pipeline.

6. The refrigeration and heating apparatus according to claim 5, wherein The first outlet pipeline and the second outlet pipeline are respectively arranged at two ends of the refrigeration and heating generator and are respectively used for transporting the warmed medium and the cooled medium. The inlet pipeline is arranged at any one end of the refrigeration and heating generator and is communicated with the energy exchanger to make the medium enter the flow cavity. ​ 7. The refrigeration and heating apparatus according to claim 6, wherein The liquid inlet pipeline comprises a first liquid inlet pipeline and a second liquid inlet pipeline. The first liquid inlet pipeline and the second liquid inlet pipeline are both in communication with the energy exchanger. During refrigeration, the second liquid outlet pipeline transports the cooled medium to the energy exchanger, and the medium flows into the flow cavity through the second liquid inlet pipeline; or, during heating, the first liquid outlet pipeline transports the heated medium to the energy exchanger, and the medium flows into the flow cavity through the first liquid inlet pipeline.

8. The refrigeration and heating apparatus according to claim 6, wherein The liquid inlet pipeline comprises a first liquid inlet pipeline and a second liquid inlet pipeline. The first liquid outlet pipeline and the first liquid inlet pipeline are both in communication with the heat exchange unit, the first liquid outlet pipeline is used for transporting the heated medium or the cooled medium to the heat exchange unit for heating or cooling, and the first liquid inlet pipeline is used for flowing the heat-exchanged medium into the flow cavity. The second liquid outlet pipeline and the second liquid inlet pipeline are both in communication with the energy exchanger, and are used for transporting the cooled medium to the energy exchanger during heating, or transporting the heated medium to the energy exchanger during refrigeration.

9. The refrigeration and heating apparatus according to claim 4, wherein Further comprising: a pump body arranged in the pipeline; a flow control device arranged at the connection between the pipeline and the heat exchange unit, and arranged at the connection between the pipeline and the energy exchanger; a controller for controlling the start and stop of the driver, the pump body and the flow control device; The solid-state elastic material unit in the refrigeration and heating generator is a plurality of hollow structures arranged in sequence, wherein the hollow structures in the plurality of solid-state elastic material units are in communication to form a first flow cavity; a cylinder is arranged outside the solid-state elastic material unit, and a second flow cavity is formed between the outside of the solid-state elastic material unit and the cylinder, and the first flow cavity and the second flow cavity are in communication through a through hole. The refrigeration and heating generator comprises a first refrigeration and heating generator and a second refrigeration and heating generator, and the motor of the driver drives the rotation of the rotating wheel on the driver to apply stress to the first refrigeration and heating generator through the protrusions on the rotating wheel, and simultaneously unload stress to the second refrigeration and heating generator through the parts other than the protrusions.

10. A cold and heat control method applied to the refrigeration and heating device according to any one of claims 1 to 9, characterized in that, Further comprising: acquiring a set temperature and an ambient temperature; determining the operating frequency of the driver loading or unloading the solid-state elastic material unit and the heat conduction parameter of conducting the heat or the cold according to the set temperature and the ambient temperature; controlling the refrigeration and heating generator to operate according to the operating frequency and the heat conduction parameter to make the ambient temperature reach the set temperature.

11. The cold heat control method of claim 10, wherein, Further comprising: acquiring historical data, the historical data comprising: the time length of refrigeration or heating to a preset temperature and the operating frequency and heat conduction parameter of the driver corresponding to the time length, wherein the heat conduction parameter comprises: the heat conduction coefficient of the medium, the specific heat capacity of the medium, the cross-sectional area of the flow cavity, the specific surface area of the flow cavity and the pump pressure parameter; The historical data is input into a preset model for training to obtain a refrigeration and heating optimal parameter model, and an optimal operating frequency corresponding to each preset temperature and a heat conduction parameter matched with the optimal operating frequency are determined according to the refrigeration and heating optimal parameter model.

12. The cold heat control method of claim 10, wherein, The operation frequency of the driver and the heat conduction parameter for conducting the heat or the cold are determined according to the set temperature and the ambient temperature, and the heat conduction parameter for conducting the heat or the cold is determined according to the set temperature and the ambient temperature, and the heat conduction parameter for conducting the heat or the cold is determined according to the set temperature and the ambient temperature. When the temperature difference between the set temperature and the ambient temperature is greater than a first preset temperature, a preset maximum operating frequency is determined as the operation frequency of the driver, and an optimal heat conduction parameter matched with the maximum operating frequency is searched according to the maximum operating frequency as the heat conduction parameter. When the temperature difference between the set temperature and the ambient temperature is less than the first preset temperature and greater than a second preset temperature, an optimal operating frequency matched with the set temperature and a heat conduction parameter matched with the optimal operating frequency are searched according to the set temperature as the operation frequency of the driver and the heat conduction parameter.

13. The cold heat control method of claim 12, wherein, Further comprising: When the temperature difference between the set temperature and the ambient temperature is less than the second preset temperature, an optimal operating frequency and a heat conduction parameter are searched according to the set temperature; The optimal operating frequency and the pump pressure parameter in the heat conduction parameter are kept unchanged, and the cross-sectional area of the flow cavity is adjusted until the ambient temperature reaches the set temperature.

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