Refrigerant heat dissipation device, its control method, and air conditioner

Abstract

The present invention provides a refrigerant heat dissipation device, a control method thereof, and an air conditioner. Among them, the refrigerant heat dissipation device includes: a radiator, in which a refrigerant pipe for allowing the flow of refrigerant is provided and is disposed on the component to be heat-dissipated; an inlet pipe connected to one end of the refrigerant pipe; an outlet pipe connected to the other end of the refrigerant pipe; a valve body disposed on the inlet pipe for adjusting the flow rate of the refrigerant flowing into the refrigerant pipe; and, the control method includes: detecting the detected temperature of the component to be heat-dissipated; adjusting a preset adjustment amount of the opening degree of the valve body according to the detected temperature and a preset target temperature; and adjusting the opening degree according to the detected temperature, the preset target temperature, and the preset adjustment amount. The control method of the refrigerant heat dissipation device of the present invention can make the working temperature of the component to be heat-dissipated constant under different loads, so that the refrigerant radiator meets the heat dissipation requirements of the component to be heat-dissipated.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerant heat dissipation, and particularly to a refrigerant heat dissipation device, a control method thereof, and an air conditioner. Background Art

[0002] Refrigeration equipment is particularly common in people's life, work and entertainment. For example, air conditioners and refrigerators. Generally, a refrigeration cycle system with a compressor is provided therein, and thus cooling capacity can be provided. However, electrical components are usually provided in refrigeration equipment. During the operation of the refrigeration equipment, these electrical components will generate a large amount of heat. In order to ensure the normal functions of the electrical components, radiators are usually provided on the electrical components.

[0003] Currently, in the existing refrigerant radiators in the prior art, the refrigerant in the refrigeration cycle system is made to flow through the channels provided inside it, thereby achieving the cooling of the electrical components. However, the flow rate of the refrigerant entering the refrigerant radiator is constant, and the refrigerant radiator cannot adjust the amount of refrigerant flowing through itself according to the real-time temperature on the electrical components. As a result, the operating temperatures of the electrical components under different loads cannot be constant, and the heat dissipation requirements of the electrical components cannot be met. Summary of the Invention

[0004] An object of the present invention is to provide a refrigerant heat dissipation device, a control method thereof, and an air conditioner that can solve at least one of the above technical defects in the prior art.

[0005] A further object of the present invention is to make the operating temperature of the component to be heat-dissipated constant under different loads, so that the refrigerant radiator meets the heat dissipation requirements of the component to be heat-dissipated.

[0006] In particular, the present invention provides a control method for a refrigerant heat dissipation device, wherein the refrigerant heat dissipation device includes:

[0007] A radiator, inside which a refrigerant pipe for allowing the refrigerant to flow is provided, and is disposed on the component to be heat-dissipated;

[0008] An inlet pipe, connected to one end of the refrigerant pipe;

[0009] An outlet pipe, connected to the other end of the refrigerant pipe;

[0010] A valve body, disposed on the inlet pipe, for adjusting the flow rate of the refrigerant flowing into the refrigerant pipe; and,

[0011] The control method includes:

[0012] Detecting the detected temperature of the component to be heat-dissipated;

[0013] Adjusting a preset adjustment amount of the opening degree of the valve body according to the detected temperature and a preset target temperature;

[0014] Adjust the opening degree according to the detected temperature, the preset target temperature, and the preset adjustment amount.

[0015] Further, the step of adjusting the preset adjustment amount of the opening degree of the valve body according to the detected temperature and the preset target temperature includes:

[0016] Judge whether the step of detecting the temperature of the component to be cooled is executed for the first time after the refrigerant cooling device is started;

[0017] If not, determine the first relationship information including the magnitude relationship between the detected temperature and the preset target temperature;

[0018] Obtain the second relationship information including the magnitude relationship between the preset target temperature and the previously detected temperature;

[0019] Compare whether the magnitude relationship between the detected temperature and the preset target temperature in the first relationship information and the second relationship information is opposite;

[0020] When the magnitude relationship between the detected temperature and the preset target temperature in the first relationship information and the second relationship information is not opposite, maintain the current preset adjustment amount;

[0021] When the magnitude relationship between the detected temperature and the preset target temperature in the first relationship information and the second relationship information is opposite, reduce the preset adjustment amount.

[0022] Further, before the step of judging whether the step of detecting the temperature of the component to be cooled is executed for the first time after the refrigerant cooling device is started, the control method further includes:

[0023] Judge whether the absolute value of the difference between the detected temperature and the preset target temperature is greater than the preset value;

[0024] If so, initialize the preset adjustment amount;

[0025] If not, execute the step of judging whether the step of detecting the temperature of the component to be cooled is executed for the first time after the refrigerant cooling device is started.

[0026] Further, before the step of adjusting the preset adjustment amount of the opening degree of the valve body according to the detected temperature and the preset target temperature, the control method further includes:

[0027] Judge whether the detected temperature is the same as the preset target temperature;

[0028] If not, execute the step of adjusting the preset adjustment amount of the opening degree of the valve body according to the detected temperature and the preset target temperature; and,

[0029] The step of adjusting the opening degree according to the detected temperature, the preset target temperature, and the preset adjustment amount includes:

[0030] Determine the trend of adjusting the opening degree according to the first relationship information;

[0031] Determine the actual adjustment amount according to the absolute value of the difference between the detected temperature and the preset target temperature and the preset adjustment amount;

[0032] Adjust the opening degree according to the trend and the actual adjustment amount.

[0033] Further, when the detected temperature is the same as the preset target temperature, return to the step of detecting the temperature of the heat dissipation component to be detected.

[0034] Further, the frequency of executing the step of detecting the temperature of the heat dissipation component to be detected is once within a preset time period; and,

[0035] After the step of adjusting the opening degree according to the detected temperature, the preset target temperature and the preset adjustment amount, the control method further includes:

[0036] Adjust the preset time period according to the absolute value.

[0037] Further, the preset time period decreases as the absolute value increases;

[0038] The preset time period increases as the absolute value decreases.

[0039] Further, after the step of adjusting the opening degree according to the detected temperature, the preset target temperature and the preset adjustment amount, the control method further includes:

[0040] Judge whether the preset adjustment amount is less than a predetermined value;

[0041] If so, initialize the preset adjustment amount;

[0042] If not, maintain the current preset adjustment amount.

[0043] Specifically, the present invention further provides a refrigerant heat dissipation device, including:

[0044] A radiator, which is provided with a refrigerant pipe for allowing the refrigerant to flow, and is arranged on the heat dissipation component to be dissipated;

[0045] An inlet pipe, connected to one end of the refrigerant pipe;

[0046] An outlet pipe, connected to the other end of the refrigerant pipe;

[0047] A valve body, arranged on the inlet pipe, for adjusting the flow rate of the refrigerant flowing into the refrigerant pipe;

[0048] A controller, including a memory and a processor, wherein the memory stores a machine-executable program, and when the executable program is executed by the processor, the control method of the above-mentioned refrigerant heat dissipation device is realized.

[0049] Specifically, the present invention further provides an air conditioner, comprising:

[0050] An indoor unit, including an indoor heat exchanger;

[0051] An outdoor unit, including a compressor, an outdoor heat exchanger and a four-way valve. The exhaust port of the compressor is communicated with the D pipe of the four-way valve. The S pipe of the four-way valve is communicated with the suction port of the compressor through a return pipe. The C pipe of the four-way valve is communicated with one end of the outdoor heat exchanger. The E pipe of the four-way valve is communicated with one end of the indoor heat exchanger. The other ends of the outdoor heat exchanger and the indoor heat exchanger are connected and communicated through a refrigerant liquid pipe;

[0052] A refrigerant heat dissipation device, including a radiator, a liquid inlet pipe, a liquid outlet pipe and a valve body. A refrigerant pipe for allowing the refrigerant to flow is arranged in the radiator. The radiator is arranged on a component to be cooled. The liquid inlet pipe is connected to one end of the refrigerant pipe and is also connected to the refrigerant liquid pipe. The liquid outlet pipe is connected to the other end of the refrigerant pipe and is also connected to the return pipe. The valve body is arranged on the liquid inlet pipe and is used for adjusting the flow rate of the refrigerant flowing into the refrigerant pipe;

[0053] A controller, including a memory and a processor. A machine-executable program is stored in the memory. When the executable program is executed by the processor, the control method of the above-mentioned refrigerant heat dissipation device is realized.

[0054] For the control method of the refrigerant heat dissipation device of the present invention, since the opening degree can be adjusted according to the detected temperature, the preset target temperature and the preset adjustment amount, furthermore, the flow rate of the refrigerant flowing into the radiator can be adjusted according to the different detected temperatures reflected by the component to be cooled, so that the radiator can always maintain the working temperature of the component to be cooled at an appropriate preset target temperature under different loads. And the preset adjustment amount for adjusting the opening degree of the valve body can also be adjusted according to the detected temperature and the preset target temperature, so as to adjust the influence degree of the detected temperature and the preset target temperature on the opening degree of the valve body during the process of adjusting the opening degree according to the detected temperature, the preset target temperature and the preset adjustment amount, and refine the process of adjusting the opening degree of the valve body. Therefore, the control method of the refrigerant heat dissipation device of the present invention can make the working temperature of the component to be cooled constant under different loads, so that the refrigerant radiator meets the heat dissipation requirements of the component to be cooled.

[0055] For the refrigerant heat dissipation device of the present invention, since it can realize the control method of the refrigerant heat dissipation device of the present invention, furthermore, the refrigerant heat dissipation device of the present invention also has the above-mentioned beneficial technical effects of the control method of the refrigerant heat dissipation device of the present invention.

[0056] For the air conditioner of the present invention, since it can realize the control method of the refrigerant heat dissipation device of the present invention, furthermore, the air conditioner of the present invention also has the above-mentioned beneficial technical effects of the control method of the refrigerant heat dissipation device of the present invention.

[0057] Those skilled in the art will better understand the above and other objects, advantages and features of the present invention from the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an illustrative but not restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0059] Figure 1 is a schematic structural view of an outdoor unit in an air conditioner according to an embodiment of the present invention;

[0060] Figure 2 is a schematic structural view of a refrigerant heat dissipation device according to an embodiment of the present invention;

[0061] Figure 3 is a schematic connection block diagram of a controller, a temperature sensor and a valve body in a refrigerant heat dissipation device or an air conditioner according to an embodiment of the present invention;

[0062] Figure 4 is a schematic flowchart of a control method of a refrigerant heat dissipation device according to an embodiment of the present invention;

[0063] Figure 5 is a schematic flowchart of a control method of a refrigerant heat dissipation device according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0064] In the description of the present embodiment, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0065] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features, that is, include one or more of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. When a certain feature "includes or contains" a certain or certain features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0066] Unless otherwise clearly defined and limited, terms such as "arranged", "connected", "linked" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the connection inside two components or the interaction relationship between two components, unless otherwise clearly defined. Those of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0067] Unless otherwise limited, all terms (including technical terms and scientific terms) used in the description of this embodiment have the same meanings as those commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0068] In the description of this embodiment, the descriptions referring to terms such as "in this embodiment" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0069] The following Figures 1 to 3 is used to detail the air conditioner of this embodiment. Figure 1 is a schematic structural diagram of an outdoor unit in an air conditioner according to an embodiment of the present invention; Figure 2 is a schematic structural diagram of a refrigerant heat dissipation device according to an embodiment of the present invention; Figure 3 is a schematic connection block diagram of a refrigerant heat dissipation device or a controller, a temperature sensor and a valve body in an air conditioner according to an embodiment of the present invention. Refer to Figure 1 、 Figure 2 and Figure 3, in this embodiment, the air conditioner includes an indoor unit, an outdoor unit 110, a refrigerant heat dissipation device 200, and a controller 300. The indoor unit includes an indoor heat exchanger; the outdoor unit 110 includes a compressor 111, an outdoor heat exchanger 112, and a four-way valve 113. The exhaust port of the compressor 111 is connected to the D pipe of the four-way valve 113. The S pipe of the four-way valve 113 is connected to the suction port of the compressor 111 through a return air pipe 118. The C pipe of the four-way valve 113 is connected to one end of the outdoor heat exchanger 112. The E pipe of the four-way valve 113 is connected to one end of the indoor heat exchanger. The other end of the outdoor heat exchanger 112 and the other end of the indoor heat exchanger are connected through a refrigerant liquid pipe 114; the refrigerant heat dissipation device 200 includes a radiator, a liquid inlet pipe 220, a liquid outlet pipe 230, and a valve body 240. A refrigerant pipe 210 for allowing the refrigerant to flow is provided in the radiator, and the radiator is provided on the component to be cooled. The liquid inlet pipe 220 is connected to one end of the refrigerant pipe 210 and is connected to the refrigerant liquid pipe 114 to introduce the liquid refrigerant in the refrigerant liquid pipe 114 into the refrigerant radiator. The liquid outlet pipe 230 is connected to the other end of the refrigerant pipe 210 and is connected to the return air pipe 118. The valve body 240 is provided on the liquid inlet pipe 220, and the valve body 240 is used to adjust the flow rate of the refrigerant flowing into the refrigerant pipe 210; the controller 300 includes a memory 310 and a processor 320. Among them, a machine-executable program 311 is stored in the memory 310. When the executable program is executed by the processor 320, the control method of the refrigerant heat dissipation device 200 in the following embodiment is realized. Furthermore, the beneficial technical effects of the control method of the refrigerant heat dissipation device 200 in the following embodiment are also possessed by the air conditioner in this embodiment.

[0070] Moreover, it should be noted that by setting the refrigerant heat dissipation device 200 at the position in the refrigeration cycle system of the above-mentioned air conditioner, it is equivalent to adding another circulation branch to the refrigeration cycle system. The refrigerant flowing through the refrigerant radiator does not go through a complete refrigeration or heating cycle. Thus, it effectively prevents the cold quantity of the refrigerant flowing through the refrigerant radiator from being insufficient or the pressure from decreasing, and effectively ensures the stability of the refrigerant radiator during the heat dissipation process for the component to be cooled, so as to further meet the requirement that the refrigerant radiator makes the working temperature of the component to be cooled constant under different loads.

[0071] In addition, the component to be cooled can be each electronic control module on the electronic control board provided in the outdoor unit 110 of the air conditioner in this embodiment. An outdoor fan 115, an oil separator 116, and a throttling device 117 can also be provided in the outdoor unit 110. The throttling device 117 can be provided on the refrigerant liquid pipe 114, and the connection between the liquid inlet pipe 220 and the refrigerant liquid pipe 114 can be provided between the throttling device 117 and the indoor heat exchanger. The throttling device 117 can be an electronic expansion valve or a capillary tube; the oil separator 116 can be connected to the return air pipe 118.

[0072] Reference Figure 2 and Figure 3 In this embodiment, the refrigerant heat dissipation device 200 further includes a temperature sensor 250 disposed on the component to be cooled, for detecting the detected temperature of the component to be cooled, and both the valve body 240 and the temperature sensor 250 are connected to the controller 300.

[0073] The following combines Figure 2 and Figure 3 to detail the refrigerant heat dissipation device 200 of this embodiment.

[0074] Reference Figure 2 In this embodiment, the refrigerant heat dissipation device 200 includes a radiator, an inlet pipe 220, an outlet pipe 230, a valve body 240, and a controller 300. A refrigerant pipe 210 for allowing the refrigerant to flow is provided in the radiator, and the radiator is disposed on the component to be cooled; the inlet pipe 220 is connected to one end of the refrigerant pipe 210, and the liquid pipe is used to introduce the liquid refrigerant into the refrigerant radiator; the outlet pipe 230 is connected to the other end of the refrigerant pipe 210; the valve body 240 is disposed on the inlet pipe 220, and the valve body 240 is used to adjust the flow rate of the refrigerant flowing into the refrigerant pipe 210; the controller 300 includes a memory 310 and a processor 320. The memory 310 stores a machine-executable program 311, and when the executable program is executed by the processor 320, it implements the control method of the above-mentioned refrigerant heat dissipation device 200. Furthermore, the refrigerant heat dissipation device 200 of this embodiment also has the beneficial technical effects of the control method of the refrigerant heat dissipation device 200 in the following embodiments.

[0075] Reference Figure 2 and Figure 3 In this embodiment, the refrigerant heat dissipation device 200 further includes a temperature sensor 250 disposed on the component to be cooled, for detecting the detected temperature of the component to be cooled, and both the valve body 240 and the temperature sensor 250 are connected to the controller 300.

[0076] In addition, the valve body 240 can be an electronic expansion valve.

[0077] The following combines Figure 4 to detail the control method of the refrigerant heat dissipation device 200 in this embodiment. Figure 4 is a schematic flowchart of the control method of the refrigerant heat dissipation device according to an embodiment of the present invention; referring to Figure 4 In this embodiment, the control method of the refrigerant heat dissipation device 200 includes:

[0078] Step S402, detecting the detected temperature of the component to be cooled.

[0079] Step S404, adjust the preset adjustment amount of the opening degree of the valve body 240 according to the detected temperature and the preset target temperature, where the preset adjustment amount includes or has an initial value.

[0080] Step S406, adjust the opening degree according to the detected temperature, the preset target temperature, and the preset adjustment amount.

[0081] Since the control method of the refrigerant heat dissipation device 200 in this embodiment can adjust the opening degree according to the detected temperature, the preset target temperature, and the preset adjustment amount, and further can adjust the flow rate of the refrigerant flowing into the radiator according to the different detected temperatures reflected by the component to be dissipated, so that the radiator can always maintain the working temperature of the component to be dissipated at an appropriate preset target temperature under different loads. And it can also adjust the preset adjustment amount of the opening degree of the valve body 240 according to the detected temperature and the preset target temperature, so as to adjust the influence degree of the detected temperature and the preset target temperature on the opening degree of the valve body 240 in the process of adjusting the opening degree according to the detected temperature, the preset target temperature, and the preset adjustment amount, and refine the process of adjusting the opening degree of the valve body 240. Therefore, the control method of the refrigerant heat dissipation device 200 in this embodiment can make the working temperature of the component to be dissipated constant under different loads, so that the refrigerant radiator meets the heat dissipation requirements of the component to be dissipated.

[0082] In addition, in this embodiment, step S404 may include steps S506 to S520 in the following embodiments. Step S404 may include steps S520 to S524 in the following embodiments.

[0083] Figure 5 It is a schematic flowchart of the control method of the refrigerant heat dissipation device according to another embodiment of the present invention. Refer to Figure 5 , in this embodiment, the control method of the refrigerant heat dissipation device 200 includes:

[0084] Step S502, detect the detected temperature of the component to be dissipated; wherein, when executing step S502, the frequency of the step of detecting the detected temperature of the component to be dissipated is to execute once within a preset time period.

[0085] Step S504, determine whether the detected temperature is the same as the preset target temperature; if so, execute step S502, that is, when the detected temperature is the same as the preset target temperature, return to execute the step of detecting the detected temperature of the component to be dissipated; if not, execute the step of adjusting the preset adjustment amount of the opening degree of the valve body 240 according to the detected temperature and the preset target temperature, that is, step S506 can be executed.

[0086] Step S506: Determine whether the absolute value of the difference between the detected temperature and the preset target temperature is greater than a preset value. If so, execute Step S508; if not, execute the step of determining whether the step of detecting the detected temperature of the component to be cooled is the first execution after the refrigerant cooling device 200 is turned on, that is, execute Step S510.

[0087] Step S508: Initialize the preset adjustment amount; that is, assign the initial value to the preset adjustment amount.

[0088] Step S510: Determine whether the step of detecting the detected temperature of the component to be cooled is the first execution after the refrigerant cooling device 200 is turned on. If not, execute Step S512; if so, that is, when the step of detecting the detected temperature of the component to be cooled is the first execution after the refrigerant cooling device 200 is turned on, execute Step S518.

[0089] Step S512: Determine the first relationship information including the magnitude relationship between the detected temperature and the preset target temperature.

[0090] Step S514: Obtain the second relationship information including the magnitude relationship between the preset target temperature and the previously detected detected temperature.

[0091] Step S516: Compare whether the magnitude relationship between the detected temperature and the preset target temperature in the first relationship information and the second relationship information is opposite. If not, that is, when the magnitude relationship between the detected temperature and the preset target temperature in the first relationship information and the second relationship information is not opposite, execute Step S518; if so, that is, when the magnitude relationship between the detected temperature and the preset target temperature in the first relationship information and the second relationship information is opposite, execute Step S520.

[0092] Step S518: Maintain the current preset adjustment amount; after Step S518 is executed, the preset adjustment amount is the initial value or the value reduced after the previous execution of Step S520.

[0093] Step S520: Reduce the preset adjustment amount.

[0094] Step S522: Determine the trend of adjusting the opening degree according to the first relationship information.

[0095] Step S524: Determine the actual adjustment amount according to the absolute value of the difference between the detected temperature and the preset target temperature and the preset adjustment amount.

[0096] Step S526: Adjust the opening degree according to the trend and the actual adjustment amount.

[0097] Step S528: Determine whether the preset adjustment amount is less than a predetermined value. If so, execute Step S530; if not, execute Step S532.

[0098] Step S530, initialize the preset adjustment amount.

[0099] Step S532, maintain the current preset adjustment amount.

[0100] Step S534, adjust the preset duration according to the absolute value.

[0101] It can be understood that through steps S506 to S520, the adjustment of the preset adjustment amount is realized. And the preset adjustment amount of the opening degree of the valve body 240 can be adjusted step by step according to the detected temperature and the preset target temperature. Specifically, steps S506 and S508 can indicate that the difference between the detected temperature and the preset target temperature is large. Furthermore, in this stage where the detected temperature is far from the preset target temperature, the preset adjustment amount can be at the initial value to ensure that in the process of adjusting the opening degree according to the detected temperature, the preset target temperature and the preset adjustment amount, the influence degrees of the detected temperature and the preset target temperature on the opening degree of the valve body 240 are ensured, and further ensure that the valve body 240 can have a large movement so that the detected temperature can be quickly adjusted to the preset target temperature; steps S512 to S516 and step S520 can indicate that when the difference between the detected temperature and the preset target temperature is small, and the detected temperature is very close to the preset target temperature and fluctuates around the preset target temperature and is not constant. Furthermore, in this stage of the detected temperature, the preset adjustment amount can be at a small value. Thus, in the process of adjusting the opening degree according to the detected temperature, the preset target temperature and the preset adjustment amount, the influence degrees of the detected temperature and the preset target temperature on the opening degree of the valve body 240 are small, so that the movement of the valve body 240 is further reduced to realize the refined movement of the valve body 240 and facilitate maintaining the detected temperature at the preset target temperature; steps S512 to S518 can indicate that the difference between the detected temperature and the preset target temperature is small, but the detected temperature is not very close to the preset target temperature. Furthermore, in this stage of the detected temperature, the preset adjustment amount can be maintained at the value reduced by step S520 last time or maintained at the initial value to maintain the influence degrees of the detected temperature and the preset target temperature on the opening degree of the valve body 240 in the process of adjusting the opening degree according to the detected temperature, the preset target temperature and the preset adjustment amount, so that the detected temperature is quickly adjusted to the preset target temperature, or the movement of the valve body 240 is refined to facilitate maintaining the detected temperature at the preset target temperature. Among them, in step S520, the preset adjustment amount is reduced. Specifically, the preset adjustment amount can be reduced to one-half of the preset adjustment amount after the last execution of steps S502 to S534 to ensure the effect of realizing the refined movement of the valve body 240. Therefore, in the process of adjusting the opening degree of the valve body 240 in this embodiment, when the detected temperature is in different stages, the preset adjustment amount is at different values, thus refining the entire process of adjusting the opening degree of the valve body 240 and effectively ensuring that the refrigerant heat dissipation device 200 can meet the heat dissipation requirements of the components to be dissipated.

[0102] Moreover, through steps S528 to S532, it is possible to avoid the preset adjustment amount from being continuously decreased after step S520 is executed multiple times, ensuring the normal operation of this control method.

[0103] In addition, through step S504, when the detected temperature is the same as the preset target temperature, it indicates that the detected temperature has reached the preset target temperature, and the flow rate of the refrigerant flowing in the refrigerant heat dissipation device 200 matches the load of the component to be cooled. Therefore, there is no need to adjust the current opening degree of the valve body 240. Furthermore, it is possible to continue to return to execute step S502 at a frequency of once every preset duration.

[0104] In addition, in step S524, the relationship between the absolute value of the difference between the detected temperature and the preset target temperature, the preset adjustment amount, and the actual adjustment amount can be:

[0105] a = w×|y - x| / B where a represents the actual adjustment amount, and the unit can be steps or percentage;

[0106] w represents the preset adjustment amount, and the unit can be steps or percentage;

[0107] y represents the preset target temperature, and the unit can be degrees;

[0108] x represents the detected temperature, and the unit can be degrees;

[0109] B represents the adjustment amount determination coefficient.

[0110] In addition, through step S534, the frequency of executing step S502 can be adjusted, and thus the frequency of adjusting the opening degree of the valve body 240 can be adjusted. Specifically, the preset duration decreases as the absolute value increases. That is, when the absolute value of the difference between the detected temperature and the preset target temperature is large, the frequency of adjusting the opening degree of the valve body 240 is high, and the valve body 240 can always operate at a large flow rate so that the component to be cooled can be quickly maintained at the preset target temperature; the preset duration increases as the absolute value decreases. That is, when the absolute value of the difference between the detected temperature and the preset target temperature is small, the frequency of adjusting the opening degree of the valve body 240 is low, that is, the detected temperature is close to the preset target temperature, and there is no need to adjust the opening degree too frequently so that the frequency of adjusting the opening degree can adapt to the heat dissipation requirements of the component to be cooled. Specifically, the relationship formula between the absolute value of the difference between the detected temperature and the preset target temperature and the preset duration can be:

[0111] t = F / |y - x|

[0112] where t represents the preset duration, and the unit can be seconds;

[0113] y represents the preset target temperature, and the unit can be degrees;

[0114] x represents the detected temperature, and the unit can be degrees.

[0115] F represents the duration determination coefficient.

[0116] In addition, it should be noted that for steps S528 to S532 and step S534, the execution order before and after in this embodiment is only for explaining the corresponding technical effects, and even if their execution order is swapped, it should still be considered to be within the protection scope of this embodiment.

[0117] In this embodiment, step S522 may include:

[0118] Determine whether the detected temperature is greater than the preset target temperature.

[0119] If so, determine that the trend of adjusting the opening is to increase the opening of the valve body 240.

[0120] If not, determine that the trend of adjusting the opening is to decrease the opening of the valve body 240.

[0121] Furthermore, the determination of the opening trend can be achieved.

[0122] At this point, those skilled in the art should recognize that although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and determined to cover all these other variations or modifications.

Claims

1. A control method for a refrigerant heat dissipation device, wherein, The refrigerant heat dissipation device includes: A radiator, which is provided with a refrigerant pipe for allowing the refrigerant to flow, and is arranged on the component to be heat-dissipated; An inlet pipe, connected to one end of the refrigerant pipe; An outlet pipe, connected to the other end of the refrigerant pipe; A valve body, arranged on the inlet pipe, for adjusting the flow rate of the refrigerant flowing into the refrigerant pipe; and, The control method includes: Detecting the detected temperature of the component to be heat-dissipated; Adjusting a preset adjustment amount of the opening degree of the valve body according to the detected temperature and a preset target temperature; Adjusting the opening degree according to the detected temperature, the preset target temperature, and the preset adjustment amount; Wherein, the step of adjusting the preset adjustment amount of the opening degree of the valve body according to the detected temperature and the preset target temperature includes: Judging whether the step of detecting the detected temperature of the component to be heat-dissipated is executed for the first time after the refrigerant heat dissipation device is started; If not, determining first relationship information including the magnitude relationship between the detected temperature and the preset target temperature; Obtaining second relationship information including the magnitude relationship between the preset target temperature and the detected temperature detected last time; Comparing whether the magnitude relationship between the detected temperature and the preset target temperature in the first relationship information and the second relationship information is opposite; When the magnitude relationship between the detected temperature and the preset target temperature in the first relationship information and the second relationship information is opposite, reducing the preset adjustment amount.

2. The control method of the refrigerant heat dissipation device according to claim 1, wherein, The step of adjusting the preset adjustment amount of the opening degree of the valve body according to the detected temperature and the preset target temperature further includes: When the magnitude relationship between the detected temperature and the preset target temperature in the first relationship information and the second relationship information is not opposite, maintaining the current preset adjustment amount.

3. The control method of the refrigerant heat dissipation device according to claim 2, wherein, Before the step of judging whether the step of detecting the detected temperature of the component to be heat-dissipated is executed for the first time after the refrigerant heat dissipation device is started, the control method further includes: Judging whether the absolute value of the difference between the detected temperature and the preset target temperature is greater than a preset value; If so, initializing the preset adjustment amount; If not, executing the step of judging whether the step of detecting the detected temperature of the component to be heat-dissipated is executed for the first time after the refrigerant heat dissipation device is started.

4. The control method of the refrigerant heat dissipation device according to claim 2, wherein, Before the step of adjusting the preset adjustment amount of the opening degree of the valve body according to the detected temperature and the preset target temperature, the control method further includes: Judging whether the detected temperature is the same as the preset target temperature; If not, executing the step of adjusting the preset adjustment amount of the opening degree of the valve body according to the detected temperature and the preset target temperature; and, The step of adjusting the opening degree according to the detected temperature, the preset target temperature, and the preset adjustment amount includes: Determining the trend of adjusting the opening degree according to the first relationship information; Determine the actual adjustment amount according to the absolute value of the difference between the detected temperature and the preset target temperature and the preset adjustment amount; Adjust the opening degree according to the trend and the actual adjustment amount.

5. The control method of the refrigerant heat dissipation device according to claim 4, wherein When the detected temperature is the same as the preset target temperature, return to execute the step of detecting the detected temperature of the component to be dissipated.

6. The control method of the refrigerant heat dissipation device according to claim 5, wherein The frequency of executing the step of detecting the detected temperature of the component to be dissipated is once within a preset time period; and After the step of adjusting the opening degree according to the detected temperature, the preset target temperature and the preset adjustment amount, the control method further includes: Adjust the preset time period according to the absolute value.

7. The control method of the refrigerant heat dissipation device according to claim 6, wherein The preset time period decreases as the absolute value increases; The preset time period increases as the absolute value decreases.

8. The control method of the refrigerant heat dissipation device according to claim 1, wherein After the step of adjusting the opening degree according to the detected temperature, the preset target temperature and the preset adjustment amount, the control method further includes: Judge whether the preset adjustment amount is less than a predetermined value; If so, initialize the preset adjustment amount; If not, maintain the current preset adjustment amount.

9. A refrigerant heat dissipation device, comprising: A radiator, inside which a refrigerant pipe for allowing refrigerant to flow is provided, and is disposed on the component to be dissipated; An inlet pipe, connected to one end of the refrigerant pipe; An outlet pipe, connected to the other end of the refrigerant pipe; A valve body, disposed on the inlet pipe, for adjusting the flow rate of the refrigerant flowing into the refrigerant pipe; A controller, including a memory and a processor, wherein a machine-executable program is stored in the memory, and when the executable program is executed by the processor, it realizes the control method of the refrigerant heat dissipation device according to any one of claims 1 to 8.

10. An air conditioner, comprising: An indoor unit, including an indoor heat exchanger; An outdoor unit, including a compressor, an outdoor heat exchanger and a four-way valve, the exhaust port of the compressor is communicated with the D pipe of the four-way valve, the S pipe of the four-way valve is communicated with the return port of the compressor through a return pipe, and the C pipe of the four-way valve is communicated with one end of the outdoor heat exchanger, the E pipe of the four-way valve is communicated with one end of the indoor heat exchanger, and the other ends of the outdoor heat exchanger and the indoor heat exchanger are connected and communicated through a refrigerant liquid pipe; A refrigerant heat dissipation device, including a radiator, an inlet pipe, an outlet pipe and a valve body, a refrigerant pipe for allowing refrigerant to flow is provided inside the radiator, and the radiator is disposed on the component to be dissipated, the inlet pipe is connected to one end of the refrigerant pipe and is connected to the refrigerant liquid pipe, the outlet pipe is connected to the other end of the refrigerant pipe and is connected to the return pipe, the valve body is disposed on the inlet pipe, and the valve body is used for adjusting the flow rate of the refrigerant flowing into the refrigerant pipe; A controller, comprising a memory and a processor, wherein a machine-executable program is stored in the memory, and when the executable program is executed by the processor, it implements the control method of the refrigerant heat dissipation device according to any one of claims 1 to 8.

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