Control device and control method based on refrigerant heat dissipation and electronic equipment

Abstract

The invention relates to the technical field of air conditioners, in particular to a control device and method based on refrigerant heat dissipation and electronic equipment. The control device comprises a compressor, a four-way valve, a heat exchanger unit, a throttling device, a heat dissipation pipeline unit and a controller, a first connector of the four-way valve is connected with an outlet of the compressor, and a second connector of the four-way valve is connected with an inlet of the compressor; the heat exchanger unit comprises an outdoor heat exchanger and an indoor heat exchanger, one end of the throttling device is connected with the other end of the outdoor heat exchanger, and the other end of the throttling device is connected with the other end of the indoor heat exchanger; one end of the heat dissipation pipeline unit is connected with an inlet of the compressor, and the other end of the heat dissipation pipeline unit is connected with an outlet of the throttling device; the controller is in communication connection with the compressor, the four-way valve, the heat exchanger unit, the throttling device and the heat dissipation pipeline unit. The system heat resistance can be greatly reduced, the heat exchange efficiency is improved, accurate heat dissipation control is achieved, and the local overheating risk is reduced.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, and in particular to a control device, control method and electronic device based on refrigerant heat dissipation. Background Technology

[0002] Existing air conditioner outdoor units are divided into a fan chamber and an electrical control chamber by a partition. The electrical control components (especially the inverter control module) within the electrical control chamber generate heat during operation. Severe overheating can affect the lifespan of these components and even cause malfunctions. Therefore, heat dissipation is necessary for the electrical control components during air conditioner operation. Current technologies offer two methods for cooling the outdoor unit's electrical control components: air cooling and refrigerant cooling. Air cooling involves an air inlet on the side panel of the electrical control chamber and an air outlet connected to the fan chamber on the partition. During operation, the fan rotates, creating negative pressure in the fan chamber, drawing air from the electrical control chamber and creating airflow to cool the components. Refrigerant cooling involves a heat sink connected to the back of the electrical control components. Refrigerant pipes can be embedded in the heat sink, allowing low-temperature refrigerant from the air conditioning system to flow into the refrigerant pipes of the heat sink, exchanging heat with the electrical control components and cooling them. The above-mentioned heat dissipation solutions that only use air cooling are not very effective. Cooling with only refrigerant may only cool down electronic components near the heat sink, and the cooling effect on other electronic components is not obvious.

[0003] In summary, the technical problems existing in the relevant technologies need to be improved. Summary of the Invention

[0004] The main objective of this application is to propose a control device, control method, and electronic device based on refrigerant heat dissipation, which can significantly reduce system thermal resistance, improve heat exchange efficiency, achieve precise heat dissipation control, effectively balance the internal temperature difference of the system, and reduce the risk of local overheating.

[0005] To achieve the above objectives, one aspect of this application provides a control device based on refrigerant heat dissipation, the control device comprising: compressor; A four-way valve, wherein the first port of the four-way valve is connected to the outlet of the compressor, and the second port of the four-way valve is connected to the inlet of the compressor; A heat exchanger unit, comprising an outdoor heat exchanger and an indoor heat exchanger, wherein the third port of the four-way valve is connected to one end of the outdoor heat exchanger and the fourth port of the four-way valve is connected to one end of the indoor heat exchanger. A throttling device, one end of which is connected to the other end of the outdoor heat exchanger, and the other end of which is connected to the other end of the indoor heat exchanger; A heat dissipation piping unit, one end of which is connected to the inlet of the compressor, and the other end of which is connected to the outlet of the throttling device; The controller is communicatively connected to the compressor, the four-way valve, the heat exchanger unit, the throttling device, and the heat dissipation piping unit.

[0006] In some embodiments, the heat dissipation piping unit includes an air inlet heat exchanger, an electrical control unit heat exchanger, and an electrical control heat dissipation piping; The air inlet heat exchanger and the electrical control unit heat exchanger are respectively installed on the electrical control heat dissipation pipeline; One end of the electronically controlled heat dissipation pipe is connected to the inlet of the compressor, and the other end of the electronically controlled heat dissipation pipe is connected to the outlet of the throttling device.

[0007] In some embodiments, the outdoor unit of the air conditioner is divided into a fan chamber and an electrical control chamber by a partition; An air inlet is provided on one side of the housing of the electrical control cavity, and the air inlet heat exchanger is disposed at the air inlet; The heat exchanger of the electrical control unit is installed inside the electrical control cavity; Both the air inlet heat exchanger and the electrical control unit heat exchanger are equipped with refrigerant passage.

[0008] In some embodiments, the electronically controlled heat dissipation pipeline includes a first heat dissipation pipeline, a second heat dissipation pipeline, and a third heat dissipation pipeline; The first heat dissipation pipe and the second heat dissipation pipe are connected in parallel; The air inlet heat exchanger is installed on the first heat dissipation pipe; The heat exchanger of the electrical control unit is installed on the second heat dissipation pipe; The third heat dissipation pipe is provided between the outlet end of the air inlet heat exchanger and the inlet end of the electrical control unit heat exchanger.

[0009] In some embodiments, it further includes a first solenoid valve, a second solenoid valve, a first electronic expansion valve, and a second electronic expansion valve; The first solenoid valve is located at the outlet of the air inlet heat exchanger; The second solenoid valve is installed on the third heat dissipation pipe; The first electronic expansion valve is located at one end of the air inlet heat exchanger near the throttling device. The second electronic expansion valve is located at one end of the heat exchanger in the electronic control unit near the throttling device.

[0010] To achieve the above objectives, another aspect of this application proposes a control method based on refrigerant heat dissipation, the method comprising the following steps: Once the aforementioned refrigerant-based heat dissipation control device is activated, the controller continuously monitors and collects the outdoor ambient temperature and the temperature of the electronic control components; The controller compares the acquired outdoor ambient temperature and the temperature of the electronic control components with a first temperature threshold, a second temperature threshold, and a third temperature threshold, respectively, to obtain the target heat dissipation mode; The controller adjusts the refrigerant-based heat dissipation control device according to the target heat dissipation mode to complete the heat dissipation.

[0011] In some embodiments, the controller compares the acquired outdoor ambient temperature and the temperature of the electronic control component with a first temperature threshold, a second temperature threshold, and a third temperature threshold, respectively, to obtain a target heat dissipation mode, including the following steps: When the outdoor ambient temperature is greater than or equal to the first temperature threshold, and the temperature of the electronic control component is greater than the second temperature threshold and less than the third temperature threshold, the system enters the first heat dissipation mode. When the outdoor ambient temperature is greater than or equal to the first temperature threshold and the temperature of the electronic control component is greater than or equal to the third temperature threshold, the system enters the second heat dissipation mode. When the outdoor ambient temperature is lower than the first temperature threshold and the temperature of the electronic control component is greater than or equal to the third temperature threshold, the third heat dissipation mode is entered. The target heat dissipation mode includes the first heat dissipation mode, the second heat dissipation mode, and the third heat dissipation mode, wherein the second temperature threshold is greater than the first temperature threshold and less than the third temperature threshold.

[0012] In some embodiments, the first heat dissipation mode includes: opening the first electronic expansion valve and the first solenoid valve, and closing the second electronic expansion valve and the second solenoid valve; The second heat dissipation mode includes: opening the first electronic expansion valve and the second solenoid valve, and closing the second electronic expansion valve and the first solenoid valve; The third heat dissipation mode includes: opening the second electronic expansion valve and closing the first electronic expansion valve, the first solenoid valve, and the second solenoid valve.

[0013] In some embodiments, the method further includes the following steps: When the outdoor ambient temperature is lower than the first temperature threshold and the temperature of the electronic control component is lower than the third temperature threshold, the air cooling is turned on and the refrigerant cooling is turned off.

[0014] To achieve the above objectives, another aspect of this application provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the method described above.

[0015] The embodiments of this application include at least the following beneficial effects: This application provides a control device, control method, and electronic device based on refrigerant heat dissipation. This solution adds a heat dissipation pipe unit, connecting one end to the compressor inlet and the other end to the outlet of the throttling device, and simultaneously uses a controller for regulation. Firstly, with the precise control of the heat dissipation pipe unit by the controller, the temperature of the medium entering the compressor inlet can be flexibly adjusted, avoiding excessive operating load due to excessively high inlet medium temperature, which helps improve the working stability and service life of the compressor. Secondly, the heat dissipation pipe unit adds an extra heat dissipation path to the original circulation, which can more accurately match the heat dissipation requirements under different operating conditions, allowing for more reasonable regulation of the heat exchange efficiency of indoor and outdoor heat exchangers. In addition, this structural optimization can enhance heat dissipation under high load conditions and reasonably control energy consumption under low load conditions, thereby improving the overall system's operating energy efficiency and adaptability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the outdoor unit of the air conditioner provided in the embodiment of this application; Figure 2 yes Figure 1 Enlarged structural schematic diagram of the heat exchanger in the central electrical control unit; Figure 3 yes Figure 1 Enlarged structural schematic diagram of the center air inlet heat exchanger; Figure 4 This is a schematic diagram of a control device based on refrigerant heat dissipation. Figure 5 This is a flowchart of a control method based on refrigerant heat dissipation provided in an embodiment of this application; Figure 6 This is a schematic diagram of the first heat dissipation mode of a control device based on refrigerant heat dissipation. Figure 7 This is a schematic diagram of the second heat dissipation mode of the control device based on refrigerant heat dissipation; Figure 8 This is a schematic diagram of the third heat dissipation mode of the control device based on refrigerant heat dissipation; Figure 9 This is a schematic diagram of the hardware structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit it. In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this application; they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this application as detailed in the appended claims.

[0018] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various concepts, but unless otherwise stated, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. For example, without departing from the scope of the embodiments of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the words “if,” “when,” or “in response to a determination” as used herein may be interpreted as “when…” or “when…” or “in response to a determination.”

[0019] As used in this application, the terms "at least one", "multiple", "each", "any", etc., "at least one" includes one, two or more, "multiple" includes two or more, "each" refers to each of the corresponding multiples, and "any" refers to any one of the multiples.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0021] This application provides a control device based on refrigerant heat dissipation, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the core control component of the refrigerant-based heat dissipation control device in this scheme is the compressor 101, which is paired with a four-way valve 102 as a key component for flow direction switching. In terms of connection, the compressor's outlet is directly connected to the first port of the four-way valve, while the compressor's inlet is connected to the second port of the four-way valve, forming a closed-loop basic link between the compressor and the four-way valve. The heat exchanger unit consists of an outdoor heat exchanger 103 and an indoor heat exchanger 104. The third port of the four-way valve connects to one end of the outdoor heat exchanger, and the fourth port connects to one end of the indoor heat exchanger. The switching function of the four-way valve allows for the switching of the two heat exchangers and the compressor. The throttling device 105, as a circulation regulating component, connects one end to the other end of the outdoor heat exchanger and the other end to the other end of the indoor heat exchanger, thus connecting the entire heat exchange loop in series. In addition, the two ends of the heat dissipation piping unit are connected to the compressor inlet and the outlet of the throttling device, respectively, to assist in system heat dissipation; the controller establishes communication connections with the compressor, four-way valve, heat exchanger unit (outdoor heat exchanger and indoor heat exchanger), throttling device, and heat dissipation piping unit to achieve centralized control of each component.

[0022] From a functional perspective, the refrigerant-based heat dissipation control device can flexibly switch between cooling and heating modes through the switching of a four-way valve: during cooling, the high-temperature refrigerant discharged from the compressor flows to the outdoor heat exchanger via the four-way valve, where it dissipates heat as a condenser, and then enters the indoor heat exchanger (where it absorbs heat as an evaporator) after being throttled by the throttling device; during heating, the four-way valve switches the flow direction, and the refrigerant returns to the compressor after passing through the indoor heat exchanger (where it releases heat as a condenser), the throttling device, and the outdoor heat exchanger (where it absorbs heat as an evaporator), meeting the temperature regulation needs of different seasons. Simultaneously, the addition of a heat dissipation piping unit helps reduce the refrigerant temperature at the compressor inlet, improving the compressor's efficiency and stability; the centralized communication connection of the controller allows for real-time adjustment of parameters such as compressor power, throttling device opening, and heat exchanger efficiency, achieving intelligent and energy-saving operation of the system, improving user comfort while reducing energy consumption and component wear.

[0023] The controller first sends a switching command to the four-way valve based on the user-defined temperature mode (cooling / heating): if it is in cooling mode, it controls the four-way valve to connect to the compressor outlet. Outdoor heat exchanger, indoor heat exchanger The link to the compressor inlet; if in heating mode, it switches to the compressor outlet. Indoor heat exchanger, outdoor heat exchanger The compressor inlet circuit is connected to the control unit. Subsequently, the controller adjusts the compressor's operating power based on the difference between the ambient temperature and the set temperature, while simultaneously controlling the opening of the throttling device to match the refrigerant flow rate under current operating conditions. For the heat exchanger unit, the heat exchange efficiency can be changed by adjusting the fan speed (if equipped). The cooling piping unit automatically starts / stops or adjusts the flow rate based on the refrigerant temperature at the compressor inlet, assisting in stable system operation. When the temperature reaches the set value, the controller reduces the compressor power or enters intermittent operation mode to maintain temperature stability while reducing energy consumption.

[0024] In some embodiments, such as Figure 4 As shown, in the refrigerant-based heat dissipation control device, the heat dissipation piping unit is further subdivided into three parts: an air inlet heat exchanger 121, an electrical control unit heat exchanger 111, and an electrical control heat dissipation piping. The air inlet heat exchanger and the electrical control unit heat exchanger are both connected in series on the electrical control heat dissipation piping, forming an independent auxiliary heat dissipation loop. One end of this loop is connected to the compressor inlet, and the other end is connected to the outlet of the throttling device, allowing some of the refrigerant flowing out of the throttling device to enter the electrical control heat dissipation piping, flowing sequentially through the air inlet heat exchanger and the electrical control unit heat exchanger, and finally converging into the compressor inlet, achieving heat dissipation through the flow of refrigerant. Simultaneously, both the air inlet heat exchanger and the electrical control unit heat exchanger are designed with refrigerant channels to ensure smooth refrigerant passage and heat exchange. This structure allows the heat dissipation piping unit to directly utilize the refrigerant within the system as the heat dissipation medium, eliminating the need for additional cooling components and improving resource utilization efficiency.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, the outdoor unit of the air conditioner is divided into two independent chambers: a fan chamber 123 and an electrical control chamber 112, by a partition. The fan chamber typically houses core heat exchange components such as the outdoor heat exchanger and the fan, while the electrical control chamber centrally houses electrical components such as the electrical control module and wiring. In terms of casing layout, the outdoor unit casing has an air inlet 124 on one side, where an air inlet heat exchanger 121 is installed. An air inlet is located on the side plate of the electrical control chamber, and an air outlet 122 connected to the fan chamber is located on the central partition. When the outdoor unit fan is running, the external airflow first passes through the air inlet heat exchanger, which cools the refrigerant in the air inlet heat exchanger and pre-regulates the temperature of the airflow entering the fan chamber. The electrical control heat exchanger is located inside the electrical control chamber, in close contact with heat-generating components such as the electrical control module, and can directly absorb the heat generated by the electrical control components during operation. This layout allows the two heat exchangers of the heat dissipation piping unit to be matched with the airflow channels and heat sources of the outdoor unit, maximizing heat dissipation.

[0026] When the refrigerant-based heat dissipation control device is running, the low-temperature refrigerant flowing out of the throttling device is diverted into the electronic control heat dissipation pipeline: first, it flows through the air inlet heat exchanger, where outdoor cold air flows through the air inlet and exchanges heat with the low-temperature refrigerant, further reducing the refrigerant temperature; then, the refrigerant flows into the heat exchanger of the electronic control section in the electronic control cavity, absorbing the heat generated by the electronic control components, keeping the electronic control components within a suitable operating temperature range. After heat dissipation, the refrigerant flows into the compressor inlet, merging with the refrigerant in the main circuit before entering the compressor, both assisting in compressor cooling and preventing electronic control components from malfunctioning due to overheating. This system utilizes the low-temperature characteristics of the refrigerant to dissipate heat from the electronic control components and pre-cools the refrigerant through the airflow at the air inlet, improving the compressor's intake efficiency; simultaneously, the integration of the heat dissipation components with the outdoor unit's cavity and air inlet layout requires less additional space, making the outdoor unit's structure more compact, and synergistically enhancing heat dissipation and heat exchange functions.

[0027] In some embodiments, such as Figure 4 As shown, the electronic control cooling pipeline is subdivided into a first cooling pipeline 127, a second cooling pipeline 114, and a third cooling pipeline 132. The first and second cooling pipelines are connected to the main circuit in parallel: one end of the first cooling pipeline and one end of the second cooling pipeline are both connected to the outlet of the throttling device, while the other ends of the two pipelines converge into the compressor inlet through different paths. The air inlet heat exchanger is located on the first cooling pipeline, while the electronic control unit heat exchanger is located on the second cooling pipeline. At the same time, a third cooling pipeline is added between the outlet end of the air inlet heat exchanger and the inlet end of the electronic control unit heat exchanger, forming a pipeline structure with parallel connection as the main component and series connection as the auxiliary component. The valves that work with the pipeline include: a first solenoid valve 125 installed at the outlet of the air inlet heat exchanger to control the opening and closing of the first heat dissipation pipeline; a second solenoid valve 131 arranged on the third heat dissipation pipeline to switch the series / parallel connection of the first heat dissipation pipeline and the second heat dissipation pipeline; and a first electronic expansion valve 126 and a second electronic expansion valve 113 respectively located at the end of the air inlet heat exchanger and the heat exchanger of the electronic control unit near the throttling device to independently regulate the refrigerant flow of the two heat dissipation pipelines.

[0028] This segmented and valve-controlled design makes the heat dissipation function of the electronically controlled cooling pipes more flexible and precise. Simultaneously, the switching between series and parallel modes can adapt to different operating conditions and cooling requirements. Parallel mode is used under high loads, allowing both heat exchangers to dissipate heat efficiently simultaneously; series mode is used under low loads to reduce refrigerant diversion losses and improve energy utilization efficiency. Independent control of valves and expansion valves also allows the operating status of each heat dissipation component to be adjusted individually, avoiding resource waste and addressing localized overheating issues, further improving system stability and energy efficiency.

[0029] Figure 5This is an optional flowchart of the control method based on refrigerant heat dissipation provided in the embodiments of this application. Figure 5 The method may include, but is not limited to, steps S510 to S530.

[0030] Step S510: Determine that the control device based on refrigerant heat dissipation is turned on, and the controller continuously monitors and collects the outdoor ambient temperature and the temperature of the electronic control components; In step S520, the controller compares the acquired outdoor ambient temperature and the temperature of the electronic control components with the first temperature threshold, the second temperature threshold, and the third temperature threshold respectively to obtain the target heat dissipation mode. Step S530: Adjust the refrigerant-based heat dissipation control device according to the target heat dissipation mode to complete the heat dissipation.

[0031] In steps S510 to S530 of the embodiments of this application, after the refrigerant-based heat dissipation control device is turned on, the controller continuously monitors and collects data on the outdoor ambient temperature and the temperature of the electronic control components in real time, and compares these two temperatures with preset first temperature thresholds, second temperature thresholds, and third temperature thresholds respectively to determine the target heat dissipation mode suitable for the current operating conditions. Subsequently, the controller precisely adjusts the valves and electronic expansion valves of the electronic control heat dissipation pipeline according to the determined target heat dissipation mode. Through this series of temperature threshold-based mode determinations and component adjustments, the control device can achieve targeted heat dissipation by utilizing the flow of refrigerant, ensuring the temperature stability of the electronic control components and adapting to the heat dissipation requirements of different outdoor environments, thus achieving efficient and energy-saving operation.

[0032] In some embodiments, in step S510, after the refrigerant-based heat dissipation control device is turned on, the controller continuously collects two core parameters, namely the outdoor ambient temperature and the temperature of the electronic control components, and switches different heat dissipation modes based on these parameters. In steps S520 to S530, the entire control logic uses a first temperature threshold, i.e., the boundary value of the outdoor ambient temperature, and a second temperature threshold and a third temperature threshold, i.e., the two boundary values ​​of the temperature of the electronic control components, as decision nodes to divide four operating scenarios, three of which are refrigerant heat dissipation modes and one is air-cooled heat dissipation mode.

[0033] Specifically, such as Figure 6 , Figure 7 and Figure 8 As shown, Figure 6 , Figure 7 and Figure 8 Both the red and green arrows indicate the path and direction of refrigerant flow. Red arrows indicate the flow path and direction of the refrigerant in the main circuit of the air conditioning system, while green arrows indicate the flow path and direction of the refrigerant in the heat dissipation piping unit. When the outdoor ambient temperature... When the temperature reaches the first temperature threshold, refrigerant cooling is prioritized; if the temperature of the electronic control components is at the second temperature threshold at this time... Temperature of electronic control components Within the third temperature threshold range, the first heat dissipation mode is triggered; if the temperature of the electronic control components... The third temperature threshold triggers the second heat dissipation mode. When the outdoor ambient temperature... At the first temperature threshold, adjustments are made based on the temperature of the electronic control components: if the temperature of the electronic control components... The third temperature threshold triggers the third heat dissipation mode; if the temperature of the electronic control components... If the third temperature threshold is reached, refrigerant cooling will be shut down, and only air cooling will be activated. The second temperature threshold is greater than the first temperature threshold but less than the third temperature threshold.

[0034] If the outdoor ambient temperature is lower than the first temperature threshold, it indicates that the outdoor temperature is low. The outdoor air entering the electronic control chamber can already cool the electronic control components to some extent. When the temperature of the electronic control components is lower than the third temperature threshold, air cooling can be used alone. However, when the temperature of the electronic control components is high, i.e., greater than or equal to the third temperature threshold, it indicates that the outdoor air temperature is insufficient to cool the electronic control components, and refrigerant needs to be introduced for heat dissipation, i.e., the third heat dissipation mode. If the outdoor ambient temperature is greater than or equal to the first temperature threshold, it indicates that the outdoor temperature is high. The outdoor air entering the electronic control chamber has limited cooling effect on the electronic control components, and refrigerant needs to be introduced immediately for heat dissipation. In this case, the temperature of the electronic control components is first detected. If the temperature of the electronic control components is greater than the second temperature threshold but less than the third temperature threshold, it indicates that the temperature of the electronic control components is slightly high. In this case, only the air entering the electronic control chamber can be cooled to improve the effect of air cooling, i.e., the first heat dissipation mode. However, when the temperature of the electronic control components is greater than or equal to the third temperature threshold, it indicates that the heat dissipation effect of the first heat dissipation mode is insufficient, and refrigerant needs to be introduced for heat dissipation, i.e., the second heat dissipation mode is activated. In the second heat dissipation mode, the refrigerant used for heat dissipation first flows into the air inlet heat exchanger and then into the electrical control unit heat exchanger. The advantage of this is that the branch refrigerant undergoes heat exchange in the air inlet heat exchanger first, and the refrigerant temperature rises slightly before entering the electrical control unit heat exchanger. This reduces the temperature difference between the refrigerant and the electrical control components, thereby reducing the risk of condensation on the electrical control components.

[0035] Different heat dissipation modes correspond to the differentiated states of valves and electronic expansion valves in the electronically controlled heat dissipation pipeline, achieving targeted refrigerant heat dissipation. For example... Figure 6As shown, the control actions for the first heat dissipation mode are: opening the first electronic expansion valve and the first solenoid valve, and closing the second electronic expansion valve and the second solenoid valve. The refrigerant flowing into the main control pipeline flows directly into the inlet radiator, exchanging heat with the air flowing into the control chamber, thus lowering the temperature of the air entering the control chamber. At this time, the refrigerant only flows through the first heat dissipation pipeline: entering the first electronic expansion valve (regulating flow rate) from the throttling device outlet, flowing through the inlet heat exchanger (exchanging heat with the outdoor air for cooling), and then converging into the compressor inlet via the first solenoid valve. This mode is suitable for scenarios with high outdoor temperatures and slight overheating of the control components, using the airflow from the inlet to pre-cool the refrigerant and simultaneously assist in heat dissipation of the control components. In this mode, the heat exchange efficiency of the inlet heat exchanger is adjusted by regulating the opening of the first electronic expansion valve. Figure 7 As shown, the control actions for the second heat dissipation mode are: opening the first electronic expansion valve and the second solenoid valve, and closing the second electronic expansion valve and the first solenoid valve. At this time, the refrigerant flows along the first heat dissipation pipe. Third heat dissipation pipe The refrigerant in the second heat dissipation pipe flows in series, passing through the first electronic expansion valve to the inlet heat exchanger for cooling. Then, it flows through the second solenoid valve (third heat dissipation pipe) into the electronic control unit heat exchanger, absorbing a large amount of heat from the electronic control components before converging into the compressor inlet. In the second heat dissipation mode, the refrigerant flowing from the main path into the electronic control pipe flows sequentially through the inlet heat exchanger and the electronic control unit heat exchanger. The refrigerant exchanges heat with the air flowing into the electronic control chamber and the electronic control components in sequence, achieving dual cooling. This second heat dissipation mode is designed for situations where the outdoor temperature is high and the electronic control components are severely overheated. By connecting two heat exchangers in series, dual heat dissipation is achieved, enhancing the efficiency of cold air utilization. In this mode, the heat exchange efficiency of the inlet heat exchanger and the electronic control unit heat exchanger can be adjusted by regulating the opening of the first electronic expansion valve. Figure 8 As shown, the control action of the third heat dissipation mode is as follows: open the second electronic expansion valve, and close the first electronic expansion valve, the first solenoid valve, and the second solenoid valve. At this time, the refrigerant only flows through the second heat dissipation pipe: it enters the second electronic expansion valve from the outlet of the throttling device (to regulate the flow rate), flows directly through the heat exchanger of the electronic control unit to absorb heat, and then flows into the compressor inlet. The third heat dissipation mode is suitable for scenarios where the outdoor temperature is low but the electronic control components are severely overheated. It does not require the participation of the inlet heat exchanger, directly and specifically dissipating heat from the electronic control components, avoiding excessive impact of the low outdoor temperature on the refrigerant. In this mode, the heat exchange efficiency of the heat exchanger of the electronic control unit can be adjusted by regulating the opening degree of the second electronic expansion valve.

[0036] In summary, the heat exchange efficiency of the heat exchanger can be adjusted by changing the opening of the electronic expansion valve in each of the target heat dissipation modes. For example, if the temperature drop of the electronic control unit is less than x degrees after entering the target heat dissipation mode for a period of time, the opening of the electronic expansion valve on the corresponding heat dissipation pipe is increased to allow more low-temperature refrigerant to enter the heat dissipation pipe, thereby improving heat exchange efficiency and enhancing heat dissipation effect.

[0037] The control logic of the target heat dissipation mode achieves a dual effect of adapting to operating conditions and precise energy saving. On the one hand, by combining the outdoor ambient temperature and the temperature of the electronic control components, the heat dissipation method is highly matched with the load demand. In high-temperature environments, the inlet heat exchanger is used to enhance pre-cooling; in cases of severe overheating, series heat dissipation is activated; and in low-temperature environments, the piping is simplified to reduce losses, avoiding the resource waste caused by a one-size-fits-all approach to heat dissipation. On the other hand, the switching between refrigerant heat dissipation and air cooling allows the refrigerant circuit to be shut off when the temperature of the electronic control components is low, and air cooling alone can meet the demand, further reducing system energy consumption. Furthermore, the independent control of valves and electronic expansion valves in each mode allows for precise adjustment of the participation status of each heat dissipation component and the refrigerant flow rate, ensuring both heat dissipation effect and avoiding ineffective refrigerant consumption, ultimately improving the operational stability and energy efficiency ratio of the entire device.

[0038] In some embodiments, during the operation of the refrigerant-based heat dissipation control device, the controller first sets three key temperature thresholds: a first temperature threshold of 20°C, a second temperature threshold of 70°C, and a third temperature threshold of 80°C. After system startup, the controller strictly implements a periodic monitoring strategy, sampling and detecting the real-time temperature of the electronic control components every 5 minutes, while continuously monitoring the outdoor ambient temperature to provide accurate data support for subsequent heat dissipation mode switching.

[0039] During mode switching in high-temperature environments, the outdoor ambient temperature remains at 26℃, which is higher than the first temperature threshold (20℃), indicating that the outdoor ambient temperature is high and refrigerant heat dissipation should be prioritized. After the air conditioner has been running for 20 minutes, the controller detects that the temperature of the electronic control components has risen to 75℃. At this point, the system logic determines that the temperature of the electronic control components is between the second and third temperature thresholds (70℃). 75℃ The temperature of the electronic control components was 80℃, indicating a slight overheating of the components, but not severe. Therefore, the controller entered the first cooling mode: opening the first electronic expansion valve and the first solenoid valve, and closing the second electronic expansion valve and the second solenoid valve. The refrigerant flowed only through the inlet heat exchanger of the first cooling pipe, using the airflow at the inlet to pre-cool the refrigerant and simultaneously assisting in electronic cooling. After 30 minutes of operation, reaching a total running time of 50 minutes, the data showed that the temperature of the electronic control components had further increased to 83℃, exceeding the third temperature threshold (80℃), indicating that the components were severely overheated. To enhance cooling, the controller immediately adjusted its strategy, switching the air conditioner to the second cooling mode: keeping the first electronic expansion valve open but closing the first solenoid valve, while simultaneously opening the second solenoid valve and closing the second electronic expansion valve. At this time, the refrigerant, after flowing through the inlet heat exchanger, no longer flowed directly back, but instead flowed through the electronic control unit heat exchanger via the third cooling pipe. This type of inlet heat exchanger... The series connection of the heat exchanger in the electrical control unit ensures that the low-temperature refrigerant is pre-cooled before entering the electrical control chamber, and then absorbs a large amount of heat from the electrical control components, achieving dual enhanced heat dissipation and ensuring that the temperature of the electrical control components drops rapidly.

[0040] In directional heat dissipation under low-temperature conditions, specifically when the outdoor ambient temperature is 16°C, which is lower than the first temperature threshold (20°C), opening the air inlet heat exchanger in this environment could lead to refrigerant overcooling or unnecessary energy consumption. After the air conditioner has been running continuously for 1.5 hours (90 minutes), due to accumulated internal load, the temperature of the electronic control components spiked to 85°C, far exceeding the third temperature threshold (80°C). Despite the low outdoor temperature, the high heat generation of the electronic control components necessitates refrigerant cooling, but interference from the low outdoor temperature must be avoided. Therefore, the controller directly instructs the device to enter the third cooling mode: closing the first electronic expansion valve, the first solenoid valve, and the second solenoid valve, and opening only the second electronic expansion valve. At this time, the refrigerant flows out from the throttling device outlet and directly through the second heat dissipation pipe, passing through the heat exchanger in the electronic control section, absorbing heat, and then flowing into the compressor inlet. The third heat dissipation mode completely cuts off the participation of the air inlet heat exchanger, avoiding the adverse effects of outdoor cold air on the system, and concentrates all the cooling capacity on the heat exchanger of the electrical control unit. This achieves precise, efficient, and directional heat dissipation of the electrical control components in a low-temperature environment, solving the overheating problem and ensuring the economic efficiency of system operation.

[0041] This application also provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the above-described method. This electronic device can be any smart terminal, including tablet computers, in-vehicle computers, etc.

[0042] It is understood that the content of the above method embodiments is applicable to this device embodiment. The specific functions implemented by this device embodiment are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0043] Please see Figure 9 , Figure 9 The hardware structure of an electronic device according to another embodiment is illustrated. The electronic device includes: The processor 901 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this application. The memory 902 can be implemented as a read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM). The memory 902 can store the operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 902 and is called and executed by the processor 901 using the methods described in the embodiments of this application. The input / output interface 903 is used to implement information input and output; The communication interface 904 is used to enable communication and interaction between this device and other devices. Communication can be achieved through wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.). Bus 905 transmits information between various components of the device (e.g., processor 901, memory 902, input / output interface 903, and communication interface 904); The processor 901, memory 902, input / output interface 903, and communication interface 904 are connected to each other within the device via bus 905.

[0044] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0045] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0046] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0047] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0048] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0049] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0050] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0051] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0052] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0053] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A control device based on refrigerant heat dissipation, characterized in that, The control device includes: compressor; A four-way valve, wherein the first port of the four-way valve is connected to the outlet of the compressor, and the second port of the four-way valve is connected to the inlet of the compressor; A heat exchanger unit, comprising an outdoor heat exchanger and an indoor heat exchanger, wherein the third port of the four-way valve is connected to one end of the outdoor heat exchanger and the fourth port of the four-way valve is connected to one end of the indoor heat exchanger. A throttling device, one end of which is connected to the other end of the outdoor heat exchanger, and the other end of which is connected to the other end of the indoor heat exchanger; A heat dissipation piping unit, one end of which is connected to the inlet of the compressor, and the other end of which is connected to the outlet of the throttling device; The controller is communicatively connected to the compressor, the four-way valve, the heat exchanger unit, the throttling device, and the heat dissipation piping unit.

2. The control device based on refrigerant heat dissipation according to claim 1, characterized in that, The heat dissipation piping unit includes an air inlet heat exchanger, an electrical control unit heat exchanger, and an electrical control heat dissipation piping. The air inlet heat exchanger and the electrical control unit heat exchanger are respectively installed on the electrical control heat dissipation pipeline; One end of the electronically controlled heat dissipation pipe is connected to the inlet of the compressor, and the other end of the electronically controlled heat dissipation pipe is connected to the outlet of the throttling device.

3. The control device based on refrigerant heat dissipation according to claim 2, characterized in that, The outdoor unit of the air conditioner is divided into a fan chamber and an electrical control chamber by a partition; An air inlet is provided on one side of the housing of the electrical control cavity, and the air inlet heat exchanger is disposed at the air inlet; The heat exchanger of the electrical control unit is installed inside the electrical control cavity; Both the air inlet heat exchanger and the electrical control unit heat exchanger are equipped with refrigerant passage.

4. The control device based on refrigerant heat dissipation according to claim 3, characterized in that, The electronically controlled heat dissipation pipeline includes a first heat dissipation pipeline, a second heat dissipation pipeline, and a third heat dissipation pipeline; The first heat dissipation pipe and the second heat dissipation pipe are connected in parallel; The air inlet heat exchanger is installed on the first heat dissipation pipe; The heat exchanger of the electrical control unit is installed on the second heat dissipation pipe; The third heat dissipation pipe is provided between the outlet end of the air inlet heat exchanger and the inlet end of the electrical control unit heat exchanger.

5. The control device based on refrigerant heat dissipation according to claim 4, characterized in that, It also includes a first solenoid valve, a second solenoid valve, a first electronic expansion valve, and a second electronic expansion valve; The first solenoid valve is located at the outlet of the air inlet heat exchanger; The second solenoid valve is installed on the third heat dissipation pipe; The first electronic expansion valve is located at one end of the air inlet heat exchanger near the throttling device. The second electronic expansion valve is located at one end of the heat exchanger in the electronic control unit near the throttling device.

6. A control method based on refrigerant heat dissipation, characterized in that, The method includes the following steps: The control device based on refrigerant heat dissipation as described in claim 5 is turned on, and the controller continuously monitors and collects the outdoor ambient temperature and the temperature of the electronic control components; The controller compares the acquired outdoor ambient temperature and the temperature of the electronic control components with a first temperature threshold, a second temperature threshold, and a third temperature threshold, respectively, to obtain the target heat dissipation mode; The controller adjusts the refrigerant-based heat dissipation control device according to the target heat dissipation mode to complete the heat dissipation.

7. The control method based on refrigerant heat dissipation according to claim 6, characterized in that, The controller compares the acquired outdoor ambient temperature and the temperature of the electronic control components with a first temperature threshold, a second temperature threshold, and a third temperature threshold, respectively, to obtain a target heat dissipation mode, including the following steps: When the outdoor ambient temperature is greater than or equal to the first temperature threshold, and the temperature of the electronic control component is greater than the second temperature threshold and less than the third temperature threshold, the system enters the first heat dissipation mode. When the outdoor ambient temperature is greater than or equal to the first temperature threshold and the temperature of the electronic control component is greater than or equal to the third temperature threshold, the system enters the second heat dissipation mode. When the outdoor ambient temperature is lower than the first temperature threshold and the temperature of the electronic control component is greater than or equal to the third temperature threshold, the third heat dissipation mode is entered. The target heat dissipation mode includes the first heat dissipation mode, the second heat dissipation mode, and the third heat dissipation mode, wherein the second temperature threshold is greater than the first temperature threshold and less than the third temperature threshold.

8. The control method based on refrigerant heat dissipation according to claim 7, characterized in that, The first heat dissipation mode includes: opening the first electronic expansion valve and the first solenoid valve, and closing the second electronic expansion valve and the second solenoid valve; The second heat dissipation mode includes: opening the first electronic expansion valve and the second solenoid valve, and closing the second electronic expansion valve and the first solenoid valve; The third heat dissipation mode includes: opening the second electronic expansion valve and closing the first electronic expansion valve, the first solenoid valve, and the second solenoid valve.

9. The control method based on refrigerant heat dissipation according to claim 7, characterized in that, The method further includes the following steps: When the outdoor ambient temperature is lower than the first temperature threshold and the temperature of the electronic control component is lower than the third temperature threshold, the air cooling is turned on and the refrigerant cooling is turned off.

10. An electronic device, characterized in that, The electronic device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the method according to any one of claims 6 to 9.

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