Cooling system, method, device, medium and equipment

Abstract

The invention discloses a cooling system, method, device, medium and equipment, a controller responds to the cooling water temperature of cooling water to control the state of a multi-way valve, so that the cooling water flows through a radiator to cool an object to be cooled, or the radiator directly cools the object to be cooled. The high specific heat capacity characteristic of water is utilized, heat of the to-be-cooled object is directly absorbed through the radiator and the water circulation system, and the specific heat capacity of water is far higher than that of air, so that the heat dissipation efficiency is remarkably higher than that of a traditional air cooling scheme based on air convection. And the temperature difference between the normal-temperature water or the heated water and the to-be-cooled object is obviously smaller than the temperature difference between the novel refrigerant and the to-be-cooled object, so that compared with the scheme of cooling through the novel refrigerant in the prior art, the problem of aging of components caused by overlarge temperature difference is also avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a cooling system, method, device, medium and equipment. Background Art

[0002] During the operation of an air conditioner, a large amount of heat is generated by its internal components. To ensure the efficient operation of the components, heat dissipation is required. Currently, there are mainly two ways to dissipate heat from air conditioner components: First, an aluminum radiator is used in combination with air cooling; Second, a heat dissipation plate is arranged on the heat dissipation surface of the power module, and a low-temperature refrigerant pipeline filled with a new refrigerant (such as difluoromethane, propane, etc.) is arranged behind the heat dissipation plate for heat dissipation.

[0003] However, for the first heat dissipation method, since air cooling depends on air convection, the heat dissipation effect is greatly affected by factors such as ambient temperature and air circulation, and it is difficult to meet the large heat dissipation requirements of high-power components.

[0004] For the second heat dissipation method, although the heat dissipation efficiency is relatively high, the evaporation temperature of the new refrigerant is generally dozens of degrees below zero, and there is a large temperature difference between the components and the refrigerant, which may accelerate the aging of these components and affect the service life of these components. Summary of the Invention

[0005] Based on this, it is necessary to provide a cooling system, method, device, medium and equipment to solve the above problems.

[0006] In a first aspect, an embodiment of the present application provides a cooling system, which includes:

[0007] A multi-way valve, the water inlet of the multi-way valve is connected to the water outlet of the water-using device of the air conditioner, and the first water outlet of the multi-way valve is connected to the water inlet of the heat exchanger of the air conditioner;

[0008] A radiator, the water inlet of the radiator is connected to the second water outlet of the multi-way valve, and the water outlet of the radiator is connected to the water inlet of the heat exchanger, for cooling the object to be dissipated heat of the air conditioner;

[0009] A temperature sensor, arranged at the water outlet of the water-using device, for detecting the temperature of the cooling water;

[0010] A controller, electrically connected to the multi-way valve.

[0011] In some embodiments of the present application, the cooling system further includes:

[0012] A check valve, arranged between the water outlet of the radiator and the water inlet of the heat exchanger.

[0013] Second aspect, embodiments of the present application further provide a cooling method. In the above cooling system, the method includes:

[0014] Obtain the temperature of the cooling water;

[0015] According to the temperature of the cooling water, control the state of the multi-way valve; wherein, the state of the multi-way valve includes a first cooling state and a second cooling state. The first cooling state is that the first water outlet of the multi-way valve is closed and the second water outlet of the multi-way valve is open. The second cooling state is that the first water outlet of the multi-way valve is open and the second water outlet of the multi-way valve is closed.

[0016] In some embodiments of the present application, the controlling the state of the multi-way valve according to the temperature of the cooling water includes:

[0017] If the temperature of the cooling water is less than or equal to a preset temperature critical value, control the multi-way valve to maintain the first cooling state;

[0018] If the temperature of the cooling water is greater than the preset temperature critical value, control the multi-way valve to maintain the second cooling state.

[0019] In some embodiments of the present application, when the air conditioner is in the variable-frequency heating mode, the controlling the state of the multi-way valve according to the temperature of the cooling water includes:

[0020] If the temperature of the cooling water is greater than or equal to a preset target temperature upper limit, control the multi-way valve to maintain the second cooling state;

[0021] If the temperature of the cooling water is less than or equal to a preset target temperature lower limit, control the multi-way valve to maintain the first cooling state; wherein, the target temperature upper limit is greater than the target temperature lower limit, and the temperature range between the target temperature lower limit and the target temperature upper limit is a buffer temperature range;

[0022] If the temperature of the cooling water decreases from higher than the target temperature upper limit until it enters the buffer temperature range, control the multi-way valve to maintain the second cooling state;

[0023] If the temperature of the cooling water increases from lower than the target temperature lower limit until it enters the buffer temperature range, control the multi-way valve to maintain the first cooling state.

[0024] In some embodiments of the present application, the method further includes:

[0025] Set the target temperature upper limit as the working temperature upper limit of the object to be heat-dissipated minus a first preset temperature difference;

[0026] Set the target temperature lower limit as the target temperature upper limit minus a second preset temperature difference.

[0027] In some embodiments of the present application, when the air conditioner is in the variable-frequency refrigeration mode, controlling the state of the multi-way valve according to the cooling water temperature includes:

[0028] Controlling the multi-way valve to maintain the first cooling state.

[0029] In a third aspect, an embodiment of the present application further provides a cooling device, which includes:

[0030] A parameter acquisition module, configured to acquire the cooling water temperature;

[0031] A cooling control module, configured to control the state of the multi-way valve according to the cooling water temperature; wherein, the state of the multi-way valve includes a first cooling state and a second cooling state. The first cooling state is that the first water outlet of the multi-way valve is closed and the second water outlet of the multi-way valve is opened. The second cooling state is that the first water outlet of the multi-way valve is opened and the second water outlet of the multi-way valve is closed.

[0032] In a fourth aspect, an embodiment of the present application further provides a terminal device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, the steps in the above cooling method are implemented.

[0033] In a fifth aspect, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above cooling method are implemented.

[0034] In a sixth aspect, an embodiment of the present application further provides a computer program product or a computer program, which includes computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the methods provided in the various optional implementation manners of the embodiments of the present application.

[0035] The present invention provides a cooling system, method, device, medium and equipment. The controller responds to the temperature of the cooling water to control the state of the multi-way valve, so that the cooling water flows through the radiator to cool the object to be cooled, or the radiator directly cools the object to be cooled. The present application utilizes the high specific heat capacity characteristic of water. The radiator and the water circulation system directly absorb the heat of the object to be cooled. Since the specific heat capacity of water is much higher than that of air, the heat dissipation efficiency is significantly higher than that of the traditional air-cooling scheme based on air convection. And since the temperature difference between the normal temperature water or the heated water and the object to be cooled is significantly smaller than the temperature difference between the new refrigerant and the object to be cooled, compared with the cooling scheme using the new refrigerant in the prior art, the problem of component aging caused by too large a temperature difference is also avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0037] Wherein:

[0038] Figure 1 is a schematic structural diagram of the cooling system provided by the first embodiment of the present application;

[0039] Figure 2 is a schematic diagram of the cooling system when the multi-way valve is in the first cooling state;

[0040] Figure 3 is a schematic diagram of the cooling system when the multi-way valve is in the second cooling state;

[0041] Figure 4 is a schematic structural diagram of the cooling system provided by the second embodiment of the present application;

[0042] Figure 5 is a schematic flowchart of the cooling method provided by the first embodiment of the present application;

[0043] Figure 6 is a schematic flowchart of the cooling method provided by the second embodiment of the present application;

[0044] Figure 7 is a schematic flowchart of the cooling method provided by the third embodiment of the present application;

[0045] Figure 8 is a schematic structural diagram of the cooling device;

[0046] Figure 9 is a block diagram of the structure of the terminal device. DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0048] The terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish between different objects, not to describe a particular order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0049] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0050] See also Figure 1 , Figure 1 This is a structural diagram of the cooling system provided in the first embodiment of the present application. During operation, the internal components of the air conditioner 20 will generate a large amount of heat. To ensure the efficient operation of these components, the cooling system 10 is used in conjunction with the air conditioner 20 to dissipate heat for the objects to be dissipated during operation of the air conditioner 20.

[0051] Among them, the air conditioners 20 adapted by the cooling system 10 provided in the embodiment of the present application include but are not limited to modular air conditioners, heat pump air conditioners, and heaters with water tank models. These air conditioners 20 are characterized by being equipped with a water tank 23, a water-using device 21, and a heat exchanger 22. The water tank 23 is a container for storing water, the water-using device 21 is a device for consuming the water in the water tank 23 to perform functions such as cooling and heating, and the heat exchanger 22 is a device for exchanging refrigerant heat with the air conditioner 20 outdoor unit, thereby allowing the refrigerant to remove heat, or removing heat from the refrigerant. For modular air conditioners, heat pump air conditioners 20, and heaters with water tank models, the water-using device 21 can specifically be a floor heater, a water-cooling indoor unit, a waste heat recovery radiator, etc.

[0052] Among them, the objects to be cooled here include, but are not limited to, chips, power components (such as Insulated Gate Bipolar Transistor (IGBT), Power Diode, Intelligent Power Module (IPM)), etc., which will generate a large amount of heat during the operation of the air conditioner 20.

[0053] Specifically, please refer to Figure 1 , the cooling system 10 includes:

[0054] A multi-way valve 11, the water inlet of the multi-way valve 11 is connected to the water outlet of the water-using device 21 of the air conditioner 20, and the first water outlet of the multi-way valve 11 is connected to the water inlet of the heat exchanger 22 of the air conditioner 20.

[0055] A radiator 12, the water inlet of the radiator 12 is connected to the second water outlet of the multi-way valve 11, and the water outlet of the radiator 12 is connected to the water inlet of the heat exchanger 22 of the air conditioner 20, for cooling the object to be cooled of the air conditioner 20.

[0056] A temperature sensor 13, which is arranged at the water outlet of the water-using device 21, for detecting the cooling water temperature.

[0057] A controller 14, which is electrically connected to the multi-way valve 11.

[0058] Among them, the pipelines connecting the multi-way valve 11, the water-using device 21, the heat exchanger 22 and the water tank 23 are main pipelines, and the water in the main pipelines undergoes continuous heat exchange to meet the refrigeration or heating requirements of the water-using device. The pipeline connecting the multi-way valve 11 and the radiator 12 is a radiator pipeline, and the water in the radiator pipeline undergoes continuous heat exchange to meet the heat dissipation requirements of the heat dissipation object.

[0059] Optionally, the types of the multi-way valve 11 that can be selected here include, but are not limited to, solenoid valves, electric valves or manual valve control methods, and the specific selection depends on the system automation requirements. In this embodiment, by controlling the opening or closing of each water outlet of the multi-way valve 11, the cooling method for the object to be cooled is changed.

[0060] Optionally, the types of the radiator 12 that can be selected here include, but are not limited to, plate radiators, shell-and-tube radiators or microchannel radiators, and can even be a section of water pipe. In this embodiment, it is best to fit the radiator 12 as closely as possible to the object to be cooled, so as to maximize the heat exchange efficiency between the radiator and the object to be cooled, and thus cool the object to be cooled as soon as possible.

[0061] Optionally, the temperature sensor 13 may be of a type including but not limited to a thermocouple, a thermistor or an infrared temperature sensor. In this embodiment, after the temperature sensor 13 detects the cooling water temperature, the data is fed back to the sensor.

[0062] Optionally, if the location of the temperature sensor 13 is limited by the structure or space of the air conditioner 20, certain adjustments can be made. For example, the temperature sensor 13 can be set at the water inlet of the water tank 23, or at the water inlet of the water-using equipment 21.

[0063] Optionally, the controller 14 here can be integrated into the current air-conditioning controller to reduce hardware costs; or it can exist independently as a separate control module to facilitate installation and maintenance.

[0064] It is understood that the controller 14 is used to control the state of the multi-way valve 11 in response to the cooling water temperature. The state of the multi-way valve 11 includes a first cooling state and a second cooling state. The first cooling state is when the first water outlet of the multi-way valve 11 is closed and the second water outlet of the multi-way valve 11 is open. The second cooling state is when the first water outlet of the multi-way valve 11 is open and the second water outlet of the multi-way valve 11 is closed. When the controller 14 controls the multi-way valve 11 in response to the cooling water temperature to be in the first cooling state, see Figure 2 ,like Figure 2 As shown in the direction of the arrow, the direction of the arrow is the direction of water flow. At this time, the water of the air-conditioning water-using equipment 21 flows through the multi-way valve 11 and the radiator 12. After absorbing the heat of the object to be dissipated at the radiator 12, it exchanges heat with the outdoor refrigerant through the heat exchanger 22 (if the water in the water tank 23 needs to be heated, the water will take away part of the heat of the refrigerant after the heat exchange; if the water in the water tank 23 needs to be cooled, the water will take away part of the heat of the water by the refrigerant after the heat exchange). Finally, the water after heat exchange enters the water tank 23 again. This situation is suitable for scenarios that require a large amount of heat dissipation.

[0065] When the controller 14 controls the multi-way valve 11 to be in the second cooling state in response to the cooling water temperature, see Figure 3 ,like Figure 3 As shown in the direction of the arrow, the direction of the arrow is the direction of water flow. At this time, the water from the water-using equipment 21 of the air conditioner 20 flows through the multi-way valve, exchanges heat with the outdoor refrigerant in the heat exchanger 22, and finally enters the water tank 23 after heat exchange. This is suitable for scenarios where no additional heat dissipation is required or only a small amount of heat dissipation is required (at this time, the radiator 12 without water circulation directly cools the object to be cooled).

[0066] Meanwhile, it can be understood that in the traditional method of arranging a heat sink on the heat dissipation surface of a power module and setting a low-temperature refrigerant pipeline filled with a new refrigerant (such as difluoromethane, propane, etc.) behind the heat sink for heat dissipation, since these new refrigerants are all flammable and explosive, and there are a certain number of welding points on these refrigerant pipelines. When the welding quality is not reliable or the air conditioner has been used for a long time, it is easy to have the problem of leakage of flammable and explosive refrigerants, which may then cause combustion or explosion. However, in the above design solution of the present application, since a water cooling system is adopted, even if the cooling water leaks, it will not cause combustion or explosion, which is relatively safer.

[0067] The above cooling system adopts a circulating water cooling solution. Utilizing the high specific heat capacity characteristic of water, it directly absorbs the heat of the object to be cooled through the radiator and the water circulation system. Since the specific heat capacity of water is much higher than that of air, the heat dissipation efficiency is significantly higher than that of the traditional air-cooling solution based on air convection. And because the temperature difference between normal-temperature water or heated water and the object to be cooled is significantly smaller than the temperature difference between the new refrigerant and the object to be cooled, compared with the solution of cooling through the new refrigerant in the prior art, it also avoids the problem of component aging caused by too large a temperature difference.

[0068] In some embodiments of the present application, referring to Figure 4 , the cooling system further includes:

[0069] A check valve 15, arranged between the water outlet of the radiator 12 and the water inlet of the heat exchanger 22.

[0070] Optionally, the types of the check valve 15 that can be selected include but are not limited to a spring-type check valve, a gravity-type check valve, or a swing check valve.

[0071] In the above cooling system, the setting of the check valve can further improve the stability and reliability of the system. Because when the cooling system is in the first cooling state, the check valve can ensure that the water flows smoothly into the heat exchanger after passing through the radiator, avoiding the normal operation of the radiator being affected by water backflow. And when the cooling system is in the second cooling state, the check valve can also prevent the water in the heat exchanger from flowing back into the radiator through the main pipeline, avoiding an unnecessary burden on the radiator.

[0072] Please refer to Figure 5 , Figure 5 which is a schematic flow chart of the cooling method provided by the first embodiment of the present application. Although the logical sequence is shown in the flow chart, in some cases, the steps shown or described can be executed in a different order from that shown in the drawings. Specifically, the specific process of the cooling method provided by this first embodiment is as follows:

[0073] S501, Obtain the temperature of the cooling water.

[0074] The cooling water temperature refers to the temperature of the water flowing out of the water-using equipment detected by the temperature sensor.

[0075] S502: Control the state of the multi-way valve according to the cooling water temperature.

[0076] Among them, the state of the multi-way valve includes a first cooling state and a second cooling state. The first cooling state is that the first water outlet of the multi-way valve is closed and the second water outlet of the multi-way valve is opened. The second cooling state is that the first water outlet of the multi-way valve is opened and the second water outlet of the multi-way valve is closed.

[0077] It is understood that when the controller controls the multi-way valve to be in the first cooling state in response to the cooling water temperature, see Figure 2 At this time, the water in the air-conditioning water-using equipment flows through the multi-way valve and the radiator, absorbs the heat of the object to be dissipated at the radiator, and then exchanges heat with the outdoor refrigerant through the heat exchanger (if the water in the water tank needs to be heated, the water will take away part of the heat of the refrigerant after the heat exchange; if the water in the water tank needs to be cooled, the refrigerant will take away part of the heat of the water after the heat exchange). Finally, the water after heat exchange enters the water tank again. This situation is suitable for scenarios that require a large amount of heat dissipation.

[0078] When the controller responds to the cooling water temperature and controls the multi-way valve to be in the second cooling state, see Figure 3 At this time, the water from the air-conditioning water-using equipment flows through the multi-way valve, exchanges heat with the outdoor refrigerant in the heat exchanger, and finally enters the water tank after heat exchange. This is suitable for scenarios where no additional heat dissipation is required or only a small amount of heat dissipation is required (in this case, the object to be cooled is directly cooled by the radiator without water circulation).

[0079] At the same time, it is understandable that the traditional method of arranging a heat sink on the heat dissipation surface of the power module and setting a low-temperature refrigerant pipeline filled with a new refrigerant (such as difluoromethane, propane, etc.) behind the heat sink for heat dissipation is that since the new refrigerants are flammable and explosive, and these refrigerant pipelines have a certain number of welding points, if the welding quality is not reliable or the air conditioner is used for too long, the flammable and explosive refrigerant is prone to leakage, which may cause combustion or explosion. However, the above-mentioned design scheme of the present application adopts a water cooling system, so even if the cooling water leaks, it will not cause combustion or explosion, which is relatively safer.

[0080] This cooling method utilizes a circulating water cooling solution, leveraging water's high specific heat capacity to directly absorb heat from the object being dissipated through a radiator and water circulation system. Because water's specific heat capacity is much higher than air's, the cooling efficiency is significantly higher than traditional air cooling solutions based on air convection. Furthermore, because the temperature difference between ambient or heated water and the object being dissipated is significantly smaller than that between the new refrigerant and the object, this method avoids component aging caused by large temperature differences, compared to existing cooling solutions using new refrigerants.

[0081] Please refer to Figure 6 , Figure 6 , which is a schematic flow chart of the cooling method provided by the second embodiment of the present application. Although the logical order is shown in the flow chart, in some cases, the steps shown or described can be executed in an order different from that shown in the drawings. Specifically, the specific flow of the cooling method provided by this second embodiment is as follows:

[0082] S601, Obtain the temperature of the cooling water.

[0083] S602A, If the temperature of the cooling water is less than or equal to the preset temperature critical value, control the multi-way valve to maintain the first cooling state.

[0084] Among them, the temperature critical value refers to the preset temperature used to judge whether to trigger the cooling mode switch, and can be artificially determined after thermodynamic simulation and experimental calibration. When the temperature of the cooling water is less than or equal to this temperature critical value, it means that the actual heat load of the object to be cooled can be heat-exchanged and cooled by the current cooling water.

[0085] Optionally, the temperature critical value can be set based on the working condition of the object to be cooled. For example, set the temperature critical value to the highest working temperature of the object to be cooled minus a preset value (such as 10°C or 5°C), which can avoid the problem of ineffective cooling of the cooling water. At the same time, through the flexible adjustment of the preset value, the system can also adapt to the heat dissipation requirements of different power scenarios. For example, a larger safety margin is provided in high-power scenarios, and the cooling energy consumption is reduced in low-power scenarios.

[0086] S602B, If the temperature of the cooling water is greater than the preset temperature critical value, control the multi-way valve to maintain the second cooling state.

[0087] On the contrary, when the temperature of the cooling water is greater than this temperature critical value, it means that the actual heat load of the object to be cooled cannot be heat-exchanged and cooled by the current cooling water.

[0088] It is worth mentioning that this solution is particularly applicable to the scenario of heating with a variable-frequency air conditioner. In this scenario, after the air conditioner and the cooling system are turned on, since the initial water temperature in the water tank is relatively low, the object to be cooled needs to run at full power to quickly increase the water temperature, and at this time, the temperature of the object to be cooled is relatively high. And because the temperature of the cooling water is relatively low at this time, the cooling water can efficiently absorb the heat of the object to be cooled when flowing through the radiator, so as to meet its heat dissipation requirements.

[0089] As the air conditioner continuously heats the water in the water tank, the water temperature in the water tank gradually approaches the target value, and the power of the object to be cooled also gradually decreases accordingly, and its cooling demand decreases correspondingly. At the same time, the temperature of the cooling water gradually increases. When the temperature of the cooling water exceeds the preset temperature critical value, the controller switches the cooling system to the second cooling state. In this state, the cooling water no longer flows through the radiator, but directly passes through the radiator to conduct basic cooling on the object to be cooled. Since the cooling demand of the object to be cooled has been significantly reduced at this time, the cooling demand can be met only by the radiator alone.

[0090] This design is particularly efficient in the heating scenario of a variable-frequency air conditioner. It can quickly dissipate heat in the initial stage and reduce the cooling energy consumption when the water temperature approaches the target, achieving a balance between the cooling demand and the system energy efficiency.

[0091] Please refer to Figure 7 , Figure 7 which is a schematic flowchart of the cooling method provided by the third embodiment of the present application. Although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order from that shown in the drawings. Specifically, the specific process of the cooling method provided by the third embodiment is as follows:

[0092] S701, Obtain the temperature of the cooling water.

[0093] S702A, If the temperature of the cooling water is greater than or equal to the preset upper limit of the target temperature, control the multi-way valve to maintain the second cooling state.

[0094] Among them, the upper limit of the target temperature refers to the preset upper limit value of the cooling water temperature. When the cooling water temperature reaches or exceeds this value, the system switches to the second cooling state. This is because from a thermodynamic perspective, the fluctuation of the cooling water temperature will cause a change in the heat dissipation capacity. When the cooling water temperature is greater than the upper limit of the target temperature, it means that the actual heat load of the object to be cooled cannot be heat-exchanged and cooled by the current cooling water.

[0095] S702B, If the temperature of the cooling water is less than or equal to the preset lower limit of the target temperature, control the multi-way valve to maintain the first cooling state.

[0096] Among them, the upper limit of the target temperature is greater than the lower limit of the target temperature. The lower limit of the target temperature refers to the preset lower limit value of the cooling water temperature. When the cooling water temperature reaches or is lower than this value, the system switches to the first cooling state. When the cooling water temperature is less than or equal to the lower limit of the target temperature, it means that the actual heat load of the object to be cooled can be heat-exchanged and cooled by the current cooling water.

[0097] S702C, If the temperature of the cooling water decreases from above the upper limit of the target temperature until it enters the buffer temperature range, control the multi-way valve to maintain the second cooling state.

[0098] Among them, the temperature range between the lower limit of the target temperature and the upper limit of the target temperature is the buffer temperature range.

[0099] S702D, if the cooling water temperature rises from below the lower limit of the target temperature until it enters the buffer temperature range, then control the multi-way valve to maintain the first cooling state.

[0100] Exemplarily, set the lower limit of the target temperature to 40°C and the upper limit of the target temperature to 50°C, then the buffer temperature range is 40°C - 50°C. When the cooling water temperature ≥ 50°C, the controller switches to the second cooling state, and the cooling water directly flows through the heat exchanger for basic heat dissipation. When the cooling water temperature ≤ 40°C, the controller switches to the first cooling state, and the cooling water flows through the radiator for active heat dissipation. When the cooling water temperature is between 40°C and 50°C: If the temperature drops from 51°C to the buffer range, the second cooling state is maintained. If the temperature rises from 39°C to the buffer range, the first cooling state is maintained.

[0101] In the above embodiments, by setting the upper and lower limits of the target temperature, the clear conditions for switching the cooling state are defined. At the same time, a buffer temperature range constructed based on the upper and lower limits of the target temperature is introduced, which can avoid the multi-way valve from frequently switching states near the critical temperature, thus significantly improving the stability of the cooling system.

[0102] In some embodiments of the present application, the setting method of the above upper limit of the target temperature is: set the upper limit of the target temperature to the upper limit of the working temperature of the object to be cooled minus the first preset temperature difference.

[0103] Optionally, the preset temperature difference is a fixed value (such as 10°C or 5°C), and this value-taking method is relatively simple and direct.

[0104] Optionally, the appropriate temperature difference range can be determined first, and then a temperature difference within this temperature difference range is taken as the first preset temperature difference for calculation according to the actual situation. For example, the temperature difference range is set to (3°C, 10°C). The significance of determining this temperature difference range is to avoid too large a temperature difference: If the difference between the cooling water and the highest actual working condition temperature is too large (e.g., >10°C), it will cause the air conditioner to end the full-power working state in advance before reaching the target heating temperature, thus reducing the heating efficiency and affecting the user experience. And to avoid too small a temperature difference: If the difference between the cooling water and the highest actual working condition temperature is too small (e.g., <3°C), when approaching the target heating temperature, the power semiconductor device will be in a harsh working condition (such as high temperature, high load), which is likely to accelerate the device aging and affect its service life.

[0105] In some embodiments of the present application, the setting method of the lower limit of the target temperature is: set the lower limit of the target temperature to the upper limit of the target temperature minus the second preset temperature difference.

[0106] Optionally, the preset temperature difference is a fixed value (e.g., 10 °C or 5 °C), and this way of taking values is relatively simple and direct.

[0107] Optionally, an appropriate temperature difference range can be determined first, and then a temperature difference within this range can be taken as the second preset temperature difference for calculation according to the actual situation. For example, the temperature difference range is set to (3 °C, 10 °C). The significance of determining this temperature difference range is to avoid too large a temperature difference: if the temperature difference is too large (e.g., >10 °C), the system cannot accurately adjust the heat dissipation method of the power semiconductor device according to the current water temperature. And avoid too small a temperature difference: if the temperature difference is too small (e.g., <3 °C), it will cause the electric multi-way valve to act frequently, increase valve wear, and affect the service life of the multi-way valve.

[0108] In some embodiments of the present application, based on the change trend of the cooling water temperature, the buffer temperature range can also be dynamically adjusted: for example, when the temperature change rate is high, the buffer range is expanded (e.g., from 40 °C - 45 °C to 38 °C - 47 °C) to reduce the switching frequency. When the temperature change rate is low, the buffer range is narrowed (e.g., from 40 °C - 45 °C to 42 °C - 44 °C) to improve the heat dissipation accuracy. This ensures system stability while improving heat dissipation efficiency and accuracy.

[0109] In some embodiments of the present application, when the air conditioner is in the variable-frequency cooling mode, controlling the state of the multi-way valve according to the cooling water temperature in S502 specifically includes the following steps: controlling the multi-way valve to maintain the first cooling state.

[0110] This is because even in relatively hot regions, the water temperature is at most 50 °C at normal temperature, while the normal operating temperature of the object to be cooled can reach 80 °C. Since the cooling water temperature is relatively low at this time, the cooling water can efficiently absorb the heat of the object to be cooled when flowing through the radiator, thus meeting its heat dissipation requirements. And as the air conditioner operates for a certain period of time, the cooling water temperature further decreases, which is more suitable for cooling the object to be cooled. Therefore, when the air conditioner is in the variable-frequency cooling mode, the multi-way valve can always be controlled to maintain the first cooling state, and the cooling water is used to cool the object to be cooled.

[0111] To facilitate better implementation of the cooling method of the present application, the present application also provides a cooling device based on the above cooling method. The meanings of the terms are the same as those in the above cooling method, and the specific implementation details can be referred to the description in the method embodiments.

[0112] Please refer to Figure 8 , Figure 8 which is a schematic structural diagram of the cooling device provided by the embodiments of the present application, and specifically may include:

[0113] A parameter acquisition module 801, configured to acquire the cooling water temperature;

[0114] A cooling control module 802 is configured to control the state of a multi-way valve according to the temperature of the cooling water. The state of the multi-way valve includes a first cooling state and a second cooling state. In the first cooling state, the first water outlet of the multi-way valve is closed and the second water outlet of the multi-way valve is open. In the second cooling state, the first water outlet of the multi-way valve is open and the second water outlet of the multi-way valve is closed.

[0115] The above cooling device utilizes the high specific heat capacity characteristic of water. Through the radiator and the water circulation system, it directly absorbs the heat of the object to be cooled. Since the specific heat capacity of water is much higher than that of air, the cooling efficiency is significantly higher than that of the traditional air-cooling solution based on air convection. And because the temperature difference between the normal temperature water or the heated water and the object to be cooled is significantly smaller than the temperature difference between the new refrigerant and the object to be cooled, compared with the cooling solution using the new refrigerant in the prior art, the problem of component aging caused by too large a temperature difference is also avoided.

[0116] In some embodiments of the present application, controlling the state of the multi-way valve according to the temperature of the cooling water includes: if the temperature of the cooling water is less than or equal to a preset temperature critical value, controlling the multi-way valve to maintain the first cooling state; if the temperature of the cooling water is greater than the preset temperature critical value, controlling the multi-way valve to maintain the second cooling state.

[0117] In some embodiments of the present application, when the air conditioner is in the variable-frequency heating mode, controlling the state of the multi-way valve according to the temperature of the cooling water includes: if the temperature of the cooling water is greater than or equal to a preset target temperature upper limit, controlling the multi-way valve to maintain the second cooling state; if the temperature of the cooling water is less than or equal to a preset target temperature lower limit, controlling the multi-way valve to maintain the first cooling state. Wherein, the target temperature upper limit is greater than the target temperature lower limit, and the temperature range between the target temperature lower limit and the target temperature upper limit is a buffer temperature range. If the temperature of the cooling water decreases from above the target temperature upper limit until it enters the buffer temperature range, controlling the multi-way valve to maintain the second cooling state; if the temperature of the cooling water increases from below the target temperature lower limit until it enters the buffer temperature range, controlling the multi-way valve to maintain the first cooling state.

[0118] In some embodiments of the present application, the method further includes: setting the target temperature upper limit as the working temperature upper limit of the object to be cooled minus a first preset temperature difference; setting the target temperature lower limit as the target temperature upper limit minus a second preset temperature difference.

[0119] In some embodiments of the present application, when the air conditioner is in the variable-frequency cooling mode, controlling the state of the multi-way valve according to the temperature of the cooling water includes: controlling the multi-way valve to maintain the first cooling state.

[0120] In addition, the present application also provides a terminal device, as Figure 9 shown, which shows a schematic structural diagram of the terminal device involved in the present application. Specifically:

[0121] The terminal device may include components such as a processor 901 with one or more processing cores, a memory 902 of one or more computer-readable storage media, a power supply 903, and an input unit 904. Those skilled in the art can understand that Figure 9 the structure of the terminal device shown in

[0122] Among them:

[0123] The processor 901 is the control center of the terminal device, connecting various parts of the entire terminal device through various interfaces and lines. By running or executing software programs and / or modules stored in the memory 902, and by calling data stored in the memory 902, it executes various functions of the terminal device and processes data, thereby monitoring the terminal device as a whole. Optionally, the processor 901 may include one or more processing cores; preferably, the processor 901 may integrate an application processor and a modem processor. Among them, the application processor mainly processes the operating system, user interface, application programs, etc., and the modem processor mainly processes wireless communication. It can be understood that the above-mentioned modem processor may not be integrated into the processor 901 either.

[0124] The memory 902 can be used to store software programs and modules. The processor 901 executes various functional applications and data processing by running the software programs and modules stored in the memory 902. The memory 902 may mainly include a program storage area and a data storage area. Among them, the program storage area can store the operating system, application programs required for at least one function, etc.; the data storage area can store data created according to the use of the terminal device. In addition, the memory 902 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. Correspondingly, the memory 902 may also include a memory controller to provide the processor 901 with access to the memory 902.

[0125] The terminal device further includes a power supply 903 for powering each component. Preferably, the power supply 903 can be logically connected to the processor 901 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. The power supply 903 may also include any components such as one or more DC or AC power supplies, a recharge system, a power device debugging circuit, a power converter or inverter, and a power status indicator.

[0126] The terminal device may further include an input unit 904, which can be used to receive input digital or character information, and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function controls.

[0127] Although not shown, the terminal device may further include a display unit and the like, which will not be elaborated here. Specifically, in this embodiment, the processor 901 in the terminal device will, according to the following instructions, load the executable files corresponding to the processes of one or more application programs into the memory 902, and the processor 901 will run the application programs stored in the memory 902, so as to implement the steps in any cooling method provided by the embodiments of the present application: obtain the temperature of the cooling water; control the state of the multi-way valve according to the temperature of the cooling water; wherein, the state of the multi-way valve includes a first cooling state and a second cooling state, the first cooling state is that the first water outlet of the multi-way valve is closed and the second water outlet of the multi-way valve is open, and the second cooling state is that the first water outlet of the multi-way valve is open and the second water outlet of the multi-way valve is closed.

[0128] This solution utilizes the high specific heat capacity characteristic of water. The heat of the object to be cooled is directly absorbed by the radiator and the water circulation system. Since the specific heat capacity of water is much higher than that of air, the heat dissipation efficiency is significantly higher than that of the traditional air-cooling solution based on air convection. And because the temperature difference between normal temperature water or heated water and the object to be cooled is significantly smaller than the temperature difference between the new refrigerant and the object to be cooled, compared with the solution of cooling by the new refrigerant in the prior art, the problem of component aging caused by too large temperature difference is also avoided.

[0129] For the specific implementation of each of the above operations, reference may be made to the previous embodiments, which will not be elaborated here.

[0130] Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructions, or by controlling relevant hardware through instructions. The instructions can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0131] To this end, the present application provides a computer-readable storage medium, on which a computer program is stored. The computer program can be loaded by a processor to execute the steps in any cooling method provided by the present application.

[0132] For the specific implementation of each of the above operations, reference may be made to the previous embodiments, which will not be elaborated here.

[0133] Among them, the computer-readable storage medium may include: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc.

[0134] Since the instructions stored in the computer-readable storage medium can execute the steps in any of the cooling methods provided in this application, the beneficial effects achievable by any of the cooling methods provided in this application can be realized. For details, refer to the previous embodiments and will not be elaborated here.

[0135] The above has introduced in detail a cooling method, device, terminal device, and computer-readable storage medium provided in this application. Specific examples are used in this article to elaborate on the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, based on the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A cooling system, characterized in that, The cooling system includes: A multi-way valve, the water inlet of the multi-way valve is connected to the water outlet of the water-using equipment of the air conditioner, and the first water outlet of the multi-way valve is connected to the water inlet of the heat exchanger of the air conditioner; A radiator, the water inlet of the radiator is connected to the second water outlet of the multi-way valve, and the water outlet of the radiator is connected to the water inlet of the heat exchanger, for cooling the object to be dissipated heat of the air conditioner; A temperature sensor, arranged at the water outlet of the water-using equipment, for detecting the cooling water temperature; A controller, electrically connected to the multi-way valve.

2. The cooling system according to claim 1, wherein The cooling system further includes: A check valve, arranged between the water outlet of the radiator and the water inlet of the heat exchanger.

3. A cooling method, characterized in that, Applied to any one of the cooling systems in claims 1 to 2, the method includes: Obtaining the cooling water temperature; Controlling the state of the multi-way valve according to the cooling water temperature; wherein, the state of the multi-way valve includes a first cooling state and a second cooling state, the first cooling state is that the first water outlet of the multi-way valve is closed and the second water outlet of the multi-way valve is open, and the second cooling state is that the first water outlet of the multi-way valve is open and the second water outlet of the multi-way valve is closed.

4. The cooling method according to claim 3, characterized in that, The controlling the state of the multi-way valve according to the cooling water temperature includes: If the cooling water temperature is less than or equal to a preset temperature critical value, then control the multi-way valve to maintain the first cooling state; If the cooling water temperature is greater than the preset temperature critical value, then control the multi-way valve to maintain the second cooling state.

5. The cooling method according to claim 3, characterized in that, When the air conditioner is in the variable-frequency heating mode, the controlling the state of the multi-way valve according to the cooling water temperature includes: If the cooling water temperature is greater than or equal to a preset target temperature upper limit, then control the multi-way valve to maintain the second cooling state; If the cooling water temperature is less than or equal to a preset target temperature lower limit, then control the multi-way valve to maintain the first cooling state; wherein, the target temperature upper limit is greater than the target temperature lower limit, and the temperature range between the target temperature lower limit and the target temperature upper limit is a buffer temperature range; If the cooling water temperature decreases from higher than the target temperature upper limit until it enters the buffer temperature range, then control the multi-way valve to maintain the second cooling state; If the cooling water temperature increases from lower than the target temperature lower limit until it enters the buffer temperature range, then control the multi-way valve to maintain the first cooling state.

6. The cooling method according to claim 5, wherein The method further includes: Setting the target temperature upper limit as the working temperature upper limit of the object to be dissipated heat minus a first preset temperature difference; Setting the target temperature lower limit as the target temperature upper limit minus a second preset temperature difference.

7. The cooling method according to claim 3, characterized in that, When the air conditioner is in the variable-frequency cooling mode, the controlling the state of the multi-way valve according to the cooling water temperature includes: Controlling the multi-way valve to maintain the first cooling state.

8. A cooling device, characterized in that, The cooling device includes: A parameter acquisition module, for acquiring the cooling water temperature; A cooling control module, configured to control the state of the multi-way valve according to the temperature of the cooling water; wherein, the states of the multi-way valve include a first cooling state and a second cooling state, the first cooling state is that the first water outlet of the multi-way valve is closed and the second water outlet of the multi-way valve is open, and the second cooling state is that the first water outlet of the multi-way valve is open and the second water outlet of the multi-way valve is closed.

9. A computer-readable storage medium, characterized in that, A computer program is stored, and when the computer program is executed by a processor, the processor is caused to execute the steps of the method according to any one of claims 3 to 7.

10. A terminal device, characterized in that, It includes a memory and a processor, the memory stores a computer program, and when the computer program is executed by the processor, the processor is caused to execute the steps of the method according to any one of claims 3 to 7.

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