Control method, control device, heat pump air conditioner, and storage medium

Abstract

The application discloses a control method, a control device, a heat pump air conditioner and a storage medium, and relates to the technical field of air conditioners, in particular to a control method, a control device, a heat pump air conditioner and a storage medium. The control method comprises the following steps: after the air conditioner is started and runs for a preset time, it is determined whether the cooling flow path has a cooling effect according to the temperature in the electric control box and the inlet liquid temperature of the cooling flow path; after it is determined that the cooling flow path has the cooling effect, the opening and closing of the electric valve are controlled according to the temperature in the electric control box and the inlet liquid temperature. The application first determines whether the cooling flow path has the cooling effect, and then controls the opening and closing of the electric valve according to the temperature in the electric control box and the inlet water temperature of the cooling flow path when it is determined that the cooling flow path has the cooling effect, so that the electric valve is timely opened when the cooling flow path has the cooling effect, heat dissipation and cooling of the electric control box are realized, and meanwhile, energy waste caused by the opening of the cooling flow path when the cooling effect of the cooling flow path is poor is avoided.

Description

Technical Field

[0001] This invention relates to the field of air conditioning equipment technology, and in particular to a control method, control device, heat pump air conditioner and storage medium. Background Technology

[0002] Heat pump air conditioning utilizes the solar energy resources stored in the soil, air, and water as a heat source and cold source. It produces no combustion, no smoke, no waste, and no pollution, making it a clean and environmentally friendly technology that utilizes renewable resources.

[0003] During the operation of a heat pump air conditioner, the electronic components that control the load, such as the compressor and outdoor fan, generate a lot of heat. In order to protect these electronic components, they are usually placed in a sealed electrical control box. This causes the temperature of the electrical control box to rise very easily, affecting the normal operation of the heat pump. Summary of the Invention

[0004] The main objective of this invention is to provide a control method, control device, heat pump air conditioner, and storage medium, aiming to improve the technical problem of poor heat dissipation efficiency of the electrical control box in existing heat pump air conditioners.

[0005] An embodiment of the present invention provides a control method for controlling a heat pump air conditioner. The heat pump air conditioner has a cooling flow path for dissipating heat from the electrical control box. An electric valve is provided in the cooling flow path to control the opening and closing of the cooling flow path and to control the flow rate of the cooling flow path. The control method includes:

[0006] After the air conditioner has been running for a preset time, the system determines whether the cooling path has a cooling effect based on the temperature inside the electrical control box and the inlet liquid temperature of the cooling path.

[0007] After confirming that the cooling flow path has a cooling effect, the electric valve is controlled to open and close according to the temperature inside the box and the inlet liquid temperature.

[0008] In some embodiments of the present invention, controlling the opening and closing of the electric valve based on the temperature inside the box and the inlet liquid temperature includes:

[0009] Based on the inlet temperature and the box temperature, determine whether the inlet temperature and the box temperature meet the first condition;

[0010] After determining that the liquid inlet temperature and the temperature inside the box have reached the first condition, control the electric valve to remain open or switch from closed to open;

[0011] After determining that the inlet liquid temperature and the box temperature have not reached the first condition, the electric valve is controlled to remain closed or switch from open to closed.

[0012] In some embodiments of the present invention, determining whether the inlet temperature and the box temperature meet a first condition based on the inlet temperature and the box temperature includes:

[0013] When the liquid inlet temperature is lower than the first preset temperature and the temperature inside the box is higher than the second preset temperature, it is determined that the liquid inlet temperature and the temperature inside the box have reached the first condition.

[0014] When the inlet temperature is higher than the first preset temperature or the box temperature is lower than the second preset temperature, it is determined that the inlet temperature and the box temperature have not met the first condition.

[0015] In some embodiments of the present invention, when the inlet temperature and the box temperature reach a first condition, the control method further includes:

[0016] Obtain the first difference between the temperature inside the box and the inlet liquid temperature, and determine the range of the first difference.

[0017] The opening degree of the electric valve is adjusted according to the difference range in which the first difference is located.

[0018] In some embodiments of the present invention, when the inlet liquid temperature and the box temperature reach the first condition, the control method further includes:

[0019] Obtain a first difference between the temperature inside the box and the inlet liquid temperature, and adjust the opening of the electric valve according to the first difference. Increase the opening of the electric valve when the first difference increases, and decrease the opening of the electric valve when the first difference decreases.

[0020] When the temperature inside the box exceeds the third preset temperature, the air conditioner is shut down, and the opening of the electric valve is adjusted to the maximum.

[0021] In some embodiments of the present invention, determining whether the inlet temperature and the box temperature meet the first condition based on the inlet temperature and the box temperature further includes:

[0022] When the liquid inlet temperature is lower than the first preset temperature, and the heating rate of the temperature inside the box is greater than or equal to the first preset rate, it is determined that the liquid inlet temperature and the temperature inside the box have reached the first condition.

[0023] When the liquid inlet temperature is lower than the first preset temperature, and the heating rate of the temperature inside the box is not greater than or equal to the first preset rate, it is determined that the liquid inlet temperature and the temperature inside the box have not met the first condition.

[0024] When the inlet temperature is higher than the first preset temperature, and the heating rate of the box temperature is greater than or equal to the first preset rate, it is determined that the inlet temperature and the box temperature have not met the first condition.

[0025] In some embodiments of the present invention, determining whether the cooling flow path has a cooling effect based on the internal temperature of the electrical control box and the inlet liquid temperature of the cooling flow path includes:

[0026] Obtain a first difference between the temperature inside the box and the inlet liquid temperature, and determine whether the cooling flow path has a cooling effect based on the first difference;

[0027] If the first difference is greater than or equal to a preset difference, then the cooling flow path is determined to have a cooling effect;

[0028] If the first difference is less than the preset difference, then it is determined that the cooling flow path has no cooling effect.

[0029] In some embodiments of the present invention, a control device is also provided, comprising:

[0030] The acquisition module is used to acquire the internal temperature of the electrical control box and the inlet temperature of the cooling flow path;

[0031] The judgment module is used to determine whether the cooling flow path has a cooling effect based on the internal temperature of the electrical control box and the inlet liquid temperature of the cooling flow path after the air conditioner has been running for a preset time.

[0032] The control module is used to control the opening and closing of the electric valve based on the temperature inside the box and the inlet liquid temperature after determining that the cooling flow path has a cooling effect.

[0033] In some embodiments of the present invention, a heat pump air conditioner is also provided, including a memory and a processor. The memory stores a computer program, and the processor is used to run the computer program in the memory to perform the steps in the control method described above.

[0034] In some embodiments of the present invention, a storage medium is also provided, the storage medium storing a computer program, the computer program being executed and loaded by a processor to perform the steps in the control method described above.

[0035] The embodiments of the present invention provide a control method, device, heat pump air conditioner, and storage medium. The control method first determines whether the cooling flow path has a cooling effect. After determining that the cooling flow path has a cooling effect, the opening and closing of the electric valve is controlled according to the internal temperature of the electrical control box and the inlet water temperature of the cooling flow path. This allows the electric valve to be opened in a timely manner when the cooling flow path has a cooling effect, so as to dissipate heat and cool down the electrical control box. At the same time, it avoids opening the cooling flow path when the cooling effect of the cooling flow path is poor, which would lead to energy waste. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0037] Figure 1 This is a flowchart illustrating a control method according to an embodiment of the present invention;

[0038] Figure 2 This is a schematic diagram of the structure of a control device according to an embodiment of the present invention;

[0039] Figure 3 This is a schematic diagram of the structure of a heat pump air conditioner according to an embodiment of the present invention;

[0040] Figure 4 This is a diagram showing the component connections of a heat pump air conditioner according to an embodiment of the present invention.

[0041] Reference numerals: 10. Control device; 11. Four-way valve; 12. Condenser; 13. Throttling element; 14. Plate heat exchanger; 15. Water pump; 16. Compressor; 21. Ambient temperature sensor; 22. Inlet water temperature sensor; 23. Outlet water temperature sensor; 100. Acquisition module; 200. Judgment module; 300. Control module; 400. Electrical control box; 410. Electrical control board; 420. Heat sink; 430. Cooling flow path; 431. Electric valve; 500. Heat exchange flow path; 510. Variable frequency pump; 601. Processor; 602. Memory; 603. Power supply; 604. Input unit; 700. Heat exchanger. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0043] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0046] like Figures 1-4 As shown, this invention provides a control method, mainly applied to a heat pump air conditioner. The heat pump air conditioner has a cooling flow path, and an electric valve is installed in the cooling flow path to control the opening and closing of the cooling flow path and to control the flow path of the cooling flow path. The control method includes:

[0047] S100 determines whether the cooling path has a cooling effect based on the internal temperature of the electrical control box and the inlet liquid temperature of the cooling path after the air conditioner has been running for a preset time.

[0048] The preset time is a pre-defined duration stored in the air conditioning control center, typically 1 minute, primarily to determine the internal temperature of the control box during normal operation. This preset time can be manually adjusted based on external factors such as season and ambient temperature.

[0049] The inlet temperature of the cooling flow path is the temperature of the medium inside the inlet of the cooling flow path. That is, the medium at this point has not yet exchanged heat with the electrical control box. Therefore, it is possible to directly judge whether the medium has a good cooling effect based on the inlet temperature and the temperature inside the box.

[0050] The internal temperature of the control box generally refers to the temperature of the mainboard inside the control box, which reflects the stable operation of the electronic components inside the control box.

[0051] After confirming that the cooling flow path has a cooling effect, the S300 controls the opening and closing of the electric valve based on the temperature inside the box and the inlet liquid temperature.

[0052] The cooling flow path has a cooling effect, which generally means that the cooling flow path can remove a lot of heat from the electrical control box. It generally requires that the inlet temperature of the cooling flow path and the internal temperature of the electrical control box have a large difference so that the two can exchange heat.

[0053] When the electric valve is open, the medium in the cooling flow path flows, which in turn dissipates heat and cools the electrical control box. When the electric valve is closed, the medium in the cooling flow path cannot flow from the inlet end into the cooling flow path, and the heat pump air conditioner does not use the cooling flow path to dissipate heat and cool the electrical control box.

[0054] Based on the above description, it can be understood that the first step is to determine whether the cooling flow path has a cooling effect. After confirming that the cooling flow path has a cooling effect, the opening and closing of the electric valve is controlled according to the internal temperature of the electrical control box and the inlet water temperature of the cooling flow path. This allows the electric valve to be opened in a timely manner when the cooling flow path has a cooling effect, so as to dissipate heat and cool down the electrical control box. At the same time, it avoids opening the cooling flow path when the cooling effect of the cooling flow path is poor, which would lead to energy waste.

[0055] In some embodiments, S300, controlling the opening and closing of the electric valve based on the temperature inside the box and the inlet liquid temperature includes:

[0056] S310 determines whether the inlet temperature and the box temperature meet the first condition based on the inlet temperature and the box temperature.

[0057] The first condition is a preset condition for the liquid inlet temperature and the internal temperature of the box. When the liquid inlet temperature and the internal temperature of the box both reach their respective preset conditions, it is determined that the liquid inlet temperature and the internal temperature of the box have reached the first condition.

[0058] S311, after determining that the inlet liquid temperature and the box temperature have reached the first condition, controls the electric valve to remain open or switch from closed to open.

[0059] In this control method, the temperature inside the box and the inlet liquid temperature are judged once every preset time period. After determining that the inlet liquid temperature and the temperature inside the box have reached the first condition, if the electric valve was previously in the open state, it is kept in the open state. If the electric valve was previously in the closed state, the electric valve is controlled to open. After a preset time period, the judgment is made again based on the temperature inside the box and the inlet liquid temperature.

[0060] S312, after determining that the inlet liquid temperature and the temperature inside the box have not reached the first condition, controls the electric valve to remain closed or switch from open to closed.

[0061] As mentioned above, this control method checks the temperature inside the box and the inlet liquid temperature every preset time period. If the temperature inside the box and the inlet liquid temperature do not meet the first condition, the electric valve will remain closed if it was previously closed, and will switch to closed if it was previously open.

[0062] Generally, except for the initial judgment on whether the temperature inside the box and the inlet liquid temperature have reached the first condition one minute after the machine is turned on, and the control of the electric valve based on the judgment result, the temperature inside the box and the inlet liquid temperature are judged every two minutes during other times of operation.

[0063] In some embodiments, S310, determining whether the inlet temperature and the box temperature meet a first condition based on the inlet temperature and the box temperature includes:

[0064] When the liquid inlet temperature is lower than the first preset temperature and the temperature inside the box is higher than the second preset temperature, it is determined that the liquid inlet temperature and the temperature inside the box meet the first condition.

[0065] If the inlet temperature is lower than the first preset temperature, it means that the inlet temperature is relatively low. At this inlet temperature, the cooling flow path can generally dissipate heat and cool down the electrical control box.

[0066] When the temperature inside the box is higher than the second preset temperature, it means that the temperature inside the control box or on the main board has reached a point where external heat dissipation and cooling are required.

[0067] When both the inlet liquid temperature and the box internal temperature simultaneously meet the above two preset conditions, it is determined that the first condition is met, and it is necessary and permissible to open the electric valve to allow the cooling flow path to dissipate heat and lower the temperature of the electrical control box. Generally, the first preset temperature is 25℃, and the second preset temperature is 45℃.

[0068] When the liquid inlet temperature is higher than the first preset temperature or the temperature inside the box is lower than the second preset temperature, it is determined that the liquid inlet temperature and the temperature inside the box have not met the first condition.

[0069] Referring to the above conditions where the inlet temperature and the box temperature meet the first condition, when the inlet temperature is higher than the first preset temperature, it means that the temperature of the medium in the cooling flow path is high. Even if the electric valve is opened, the current inlet temperature of the cooling flow path cannot effectively exchange heat with the control box to cool it down. When the box temperature is lower than the second preset temperature, it means that the temperature inside the control box or the motherboard is low, and there is no need to use external structures for heat dissipation and cooling.

[0070] In some embodiments, when the inlet temperature and the internal temperature of the chamber reach a first condition, the control method further includes:

[0071] S410, obtain the first difference between the temperature inside the box and the inlet liquid temperature, and determine the difference range in which the first difference is located.

[0072] The first difference is calculated as: Box temperature - Inlet liquid temperature. Generally, after the first condition is met, the larger the first difference, the higher the box temperature. Therefore, it is necessary to adjust the opening of the electric valve in a timely manner to adjust the flow rate of the cooling path and improve the heat dissipation efficiency of the control box. Similarly, the smaller the first difference, the lower the box temperature. Since the cooling medium in the cooling path may come from other heat exchange paths, excessive flow in the cooling path will lead to lower flow in other paths. Therefore, adjusting the flow rate of the cooling path in a timely manner according to the size of the first difference can avoid ineffective heat dissipation caused by excessive flow in the cooling path and reduce the impact on other paths. At the same time, the air conditioning control center stores multiple ranges of the first difference, i.e., difference ranges. It can determine the difference range of the current box temperature and inlet liquid temperature based on the verticality of the first difference.

[0073] S420, adjusts the opening degree of the electric valve according to the difference range in which the first difference is located.

[0074] In this system, the air conditioning control center assigns a corresponding electric valve opening degree to each differential value range. The correspondence between the electric valve opening degree and the differential value range in one embodiment is shown in the table below:

[0075] First difference (0，A] (a,b) (b，+∞) Electric valve opening H*1 / 3 H*2 / 3 H*1

[0076] Where H is the maximum opening degree of the electric valve.

[0077] In some embodiments, more difference ranges can be set to correspond to more opening sizes.

[0078] In other embodiments, when the inlet temperature and the internal temperature of the container reach a first condition, the control method further includes:

[0079] S410: Obtain the first difference between the temperature inside the box and the inlet liquid temperature, and adjust the opening of the electric valve according to the first difference. When the first difference increases, increase the opening of the electric valve; when the first difference decreases, decrease the opening of the electric valve.

[0080] Wherein, the first difference = box temperature - inlet liquid temperature. Generally, after the first condition is met, the larger the first difference, the higher the box temperature. Therefore, it is necessary to adjust the opening of the electric valve in a timely manner to adjust the flow rate of the cooling path and improve the heat dissipation efficiency of the control box. Similarly, the smaller the first difference, the lower the box temperature. Since the cooling medium in the cooling path may come from other heat exchange paths, when the flow rate of the cooling path is too high, it will lead to a lower flow rate in other paths. Therefore, adjusting the flow rate of the cooling path in a timely manner according to the size of the first difference can avoid ineffective heat dissipation caused by excessive flow rate in the cooling path and reduce the impact on other paths.

[0081] That is, the opening of the electric valve is adjusted proportionally to the first difference in order to more precisely control the flow rate of the cooling path and avoid ineffective heat dissipation caused by excess flow. Ineffective heat dissipation means that the flow rate increases but the heat dissipation efficiency remains unchanged.

[0082] S420: When the temperature inside the box exceeds the third preset temperature, control the air conditioner to stop and adjust the electric valve opening to the maximum.

[0083] The third preset temperature is the temperature at which the electronic control components in the control box need to be shut down and rested. At this temperature, the electronic control components generate a lot of heat and are very easy to burn out and short-circuit. Therefore, it is necessary to control the air conditioner to shut down and dissipate heat with the maximum heat dissipation flow of the cooling flow path to ensure that the control box can cool down quickly.

[0084] In some embodiments, S310, determining whether the inlet temperature and the box temperature have reached the first condition based on the inlet temperature and the box temperature further includes:

[0085] When the inlet temperature is lower than the first preset temperature and the heating rate of the box temperature is greater than or equal to the first preset rate, it is determined that the inlet temperature and the box temperature have reached the first condition.

[0086] The first preset rate is the pre-existing temperature rise rate of the air conditioning control center. When the temperature rise rate inside the box is greater than or equal to the first preset rate, it can be determined that the temperature inside the box is rising rapidly. This means that the electrical control components of the electrical control box are in a high-energy-consumption state. Therefore, even if the temperature inside the box has not reached the second preset temperature, the electric valve can be opened in advance to dissipate heat from the electrical control box and prevent the electrical control components from burning out due to rapid heating.

[0087] If the inlet temperature is lower than the first preset temperature and the heating rate of the box temperature is not greater than or equal to the first preset rate, then it is determined that the inlet temperature and the box temperature have not reached the first condition.

[0088] When the liquid inlet temperature is lower than the first preset temperature and the temperature rise rate inside the box is less than the first preset rate, it means that the temperature change inside the box is normal and the electric valve does not need to be opened.

[0089] If the inlet temperature is higher than the first preset temperature and the heating rate of the box temperature is greater than or equal to the first preset rate, then it is determined that the inlet temperature and the box temperature have not met the first condition.

[0090] In this case, although the temperature inside the control box rises rapidly, the high temperature of the inlet liquid prevents effective heat dissipation from the control box, thus eliminating the need to open the electric valve and saving energy.

[0091] In some embodiments, S100, determining whether the cooling flow path has a cooling effect based on the internal temperature of the electrical control box and the inlet temperature of the cooling flow path includes:

[0092] S110: Obtain the first difference between the temperature inside the box and the inlet liquid temperature, and determine whether the cooling flow path has a cooling effect based on the first difference.

[0093] The first difference is calculated as: box temperature - liquid inlet temperature. This value reflects the heat exchange effect between the control box and the cooling flow path. A larger difference indicates a higher heat exchange efficiency between the control box and the cooling flow path, meaning the cooling flow path has a cooling effect. A smaller difference indicates a lower heat exchange efficiency or no heat exchange effect between the control box and the cooling flow path, meaning the cooling flow path does not have a cooling effect.

[0094] S111, if the first difference is greater than or equal to the preset difference, then it is determined that the cooling flow path has a cooling effect.

[0095] S112, if the first difference is less than the preset difference, then it is determined that the cooling flow path does not have a cooling effect.

[0096] The preset difference is a value pre-stored in the air conditioning control center, which is generally set between 5℃ and 12℃.

[0097] In some embodiments, the present invention also provides a control device 10, including an acquisition module 100, a judgment module 200, and a control module 300. The acquisition module 100 is used to acquire the internal temperature of the control box and the inlet liquid temperature of the cooling flow path. The judgment module 200 is used to determine whether the cooling flow path has a cooling effect based on the internal temperature of the control box and the inlet liquid temperature of the cooling flow path after the air conditioner has been running for a preset time. The control module 300 is used to control the opening and closing of the electric valve based on the internal temperature and the inlet liquid temperature after determining that the cooling flow path has a cooling effect.

[0098] In some embodiments, the present invention also provides a heat pump air conditioner, which may include components such as a processor 601 with one or more processing cores, a memory 602 with one or more computer-readable storage media, a power supply 603, and an input unit 604. Those skilled in the art will understand that the above-described structure of the heat pump air conditioner does not constitute a limitation on the heat pump air conditioner, and may include more or fewer components, or combine certain components, or have different component arrangements. Wherein:

[0099] The processor 601 is the control center of the heat pump air conditioner. It connects various parts of the heat pump air conditioner via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 602, and by calling data stored in the memory 602, it performs various functions and processes data, thereby providing overall monitoring of the heat pump air conditioner. Optionally, the processor 601 may include one or more processing cores; preferably, the processor 601 may integrate an application processor 601 and a modem processor 601. The application processor 601 mainly handles the operating system, user interface, and computer programs, while the modem processor 601 mainly handles wireless communication. It is understood that the modem processor 601 may also not be integrated into the processor 601.

[0100] The memory 602 can be used to store software programs and modules. The processor 601 executes various functional applications and data processing by running the software programs and modules stored in the memory. The memory may mainly include a program storage area and a data storage area. The program storage area may store the operating system, computer programs required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the server, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory may also include a memory controller to provide the processor 601 with access to the memory.

[0101] The heat pump air conditioner also includes a power supply 603 that supplies power to the various components. Preferably, the power supply 603 can be logically connected to the processor 601 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The power supply may also include one or more DC or AC power supplies, a recharging system, a power fault detection circuit, a power converter or inverter, a power status indicator, and any other components.

[0102] The heat pump air conditioner may also include an input unit 604, which can be used to receive input digital or character information, and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control.

[0103] Although not shown, heat pump air conditioners may also include display units, etc., which will not be described in detail here. Specifically, in this embodiment, the processor 601 in the heat pump air conditioner loads the executable files corresponding to the processes of one or more computer programs into the memory 602 according to the following instructions, and the processor 601 runs the computer programs stored in the memory 602 to perform the following steps:

[0104] After determining that the heat pump air conditioner needs to operate at a reduced frequency, the optimal operating frequency is determined based on the best energy efficiency frequency corresponding to the current ambient temperature.

[0105] After the air conditioner has been running for a preset time, the cooling effect of the cooling path is determined based on the temperature inside the control box and the inlet temperature of the cooling flow path.

[0106] After confirming that the cooling flow path has a cooling effect, the electric valve is controlled to open and close based on the temperature inside the box and the inlet liquid temperature.

[0107] The heat pump air conditioner first determines whether the cooling flow path has a cooling effect. After confirming that the cooling flow path has a cooling effect, it controls the opening and closing of the electric valve according to the internal temperature of the control box and the inlet water temperature of the cooling flow path. This allows the electric valve to be opened in a timely manner when the cooling flow path has a cooling effect, so as to dissipate heat and cool down the control box. At the same time, it avoids opening the cooling flow path when the cooling effect of the cooling flow path is poor, which would lead to energy waste.

[0108] like Figure 4 As shown, in some embodiments, the heat pump air conditioner includes at least: a heat exchanger 700, a heat exchange flow path 500, an electrical control box 400, and a cooling flow path 430. The heat exchange flow path 500 exchanges heat through the heat exchanger 700. The inlet of the cooling flow path 430 is connected to the inlet end of the heat exchange flow path 500, and the outlet of the cooling flow path 430 is connected to the outlet end of the heat exchange flow path 500. The cooling flow path 430 exchanges heat with the electrical control box 400 through the electrical control box 400. An electric valve 431 is provided on the cooling flow path 430 to control the opening and closing of the cooling flow path 430 and the flow rate.

[0109] Specifically, the electrical control box 400 includes an electrical control board 410. Multiple electrical control components are mounted on one side of the electrical control board 410, and a heat sink 420 is mounted on the other side. The heat sink 420 has a heat exchange chamber, and a cooling flow path 430 communicates with the heat exchange chamber to deliver cooling medium into it, allowing heat exchange between the heat sink 420 and the electrical control board 410. An electric valve 431 is mounted on the cooling flow path 430 to control its flow rate, opening, and closing. A variable frequency pump 510 is mounted on the heat exchange flow path 500 to drive the flow of the medium in both the heat exchange flow path 500 and the cooling flow path 430. A temperature sensor is mounted on the electrical control board 410 to detect the temperature on the board, which serves as the internal temperature of the box.

[0110] In other embodiments, the cooling flow path is not connected to the heat exchange flow path, and a separate cooling circuit is provided, which is specifically used to dissipate heat and cool down the electrical control box.

[0111] Those skilled in the art will understand that all or part of the steps in any of the methods in the above embodiments can be performed by a computer program or by a computer program controlling related hardware. The computer program can be stored in a computer-readable storage medium and loaded and executed by the processor 601.

[0112] In some embodiments, the present invention also provides a storage medium storing a computer program, which is executed and loaded by a processor to perform the following steps;

[0113] After the air conditioner has been running for a preset time, the cooling effect of the cooling path is determined based on the temperature inside the control box and the inlet temperature of the cooling flow path.

[0114] After confirming that the cooling flow path has a cooling effect, the electric valve is controlled to open and close based on the temperature inside the box and the inlet liquid temperature.

[0115] Through the above steps, it is first determined whether the cooling flow path has a cooling effect. After confirming that the cooling flow path has a cooling effect, the opening and closing of the electric valve is controlled according to the internal temperature of the electrical control box and the inlet water temperature of the cooling flow path. This allows the electric valve to be opened in a timely manner when the cooling flow path has a cooling effect, so as to dissipate heat and cool down the electrical control box. At the same time, it avoids opening the cooling flow path when the cooling effect of the cooling flow path is poor, which would lead to energy waste.

[0116] It will be understood by those skilled in the art that any references to memory, storage, database, or other media used in the embodiments provided by this invention may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM), etc.

[0117] Since the computer program stored in the storage medium can execute the steps in the air conditioning control method in any embodiment of the present invention, the beneficial effects that the air conditioning control method in any embodiment of the present invention can achieve can be realized, as detailed in the preceding embodiments, and will not be repeated here.

[0118] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.

[0119] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the detailed descriptions of other embodiments above, which will not be repeated here.

[0120] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the application concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A control method for controlling a heat pump air conditioner, wherein the heat pump air conditioner has a cooling flow path for dissipating heat from an electrical control box, and an electric valve is provided in the cooling flow path for controlling the opening and closing of the cooling flow path and controlling the flow rate of the cooling flow path, characterized in that, The control method includes: After the air conditioner has been running for a preset time, the system determines whether the cooling path has a cooling effect based on the temperature inside the electrical control box and the inlet liquid temperature of the cooling path. After confirming that the cooling flow path has a cooling effect, the electric valve is controlled to open and close according to the temperature inside the box and the inlet liquid temperature; Based on the inlet temperature and the box temperature, determine whether the inlet temperature and the box temperature meet the first condition; After determining that the inlet temperature and the box temperature have reached the first condition, the electric valve is controlled to switch from closed to open; when the inlet temperature is lower than the first preset temperature and the box temperature is higher than the second preset temperature, it is determined that the inlet temperature and the box temperature have reached the first condition. When the inlet temperature and the box temperature reach the first condition, the first difference between the box temperature and the inlet temperature is obtained, and the difference range in which the first difference is located is determined. The opening degree of the electric valve is adjusted according to the difference range in which the first difference is located.

2. The control method according to claim 1, characterized in that, The step of controlling the opening and closing of the electric valve based on the temperature inside the box and the inlet liquid temperature includes: After determining that the inlet liquid temperature and the box temperature have not reached the first condition, the electric valve is controlled to remain closed or switch from open to closed.

3. The control method according to claim 2, characterized in that, The step of determining whether the inlet temperature and the box temperature meet the first condition based on the inlet temperature and the box temperature includes: When the inlet temperature is higher than the first preset temperature or the box temperature is lower than the second preset temperature, it is determined that the inlet temperature and the box temperature have not met the first condition.

4. The control method according to claim 3, characterized in that, When the inlet temperature and the internal temperature of the container reach the first condition, the control method further includes: Obtain a first difference between the temperature inside the box and the inlet liquid temperature, and adjust the opening of the electric valve according to the first difference. Increase the opening of the electric valve when the first difference increases, and decrease the opening of the electric valve when the first difference decreases. When the temperature inside the box exceeds the third preset temperature, the air conditioner is shut down, and the opening of the electric valve is adjusted to the maximum.

5. The control method according to claim 3, characterized in that, The step of determining whether the inlet temperature and the box temperature meet the first condition based on the inlet temperature and the box temperature further includes: When the liquid inlet temperature is lower than the first preset temperature, and the heating rate of the temperature inside the box is greater than or equal to the first preset rate, it is determined that the liquid inlet temperature and the temperature inside the box have reached the first condition. When the liquid inlet temperature is lower than the first preset temperature, and the heating rate of the temperature inside the box is not greater than or equal to the first preset rate, it is determined that the liquid inlet temperature and the temperature inside the box have not met the first condition. When the inlet temperature is higher than the first preset temperature, and the heating rate of the box temperature is greater than or equal to the first preset rate, it is determined that the inlet temperature and the box temperature have not met the first condition.

6. The control method according to claim 1, characterized in that, The step of determining whether the cooling flow path has a cooling effect based on the internal temperature of the electrical control box and the inlet liquid temperature of the cooling flow path includes: Obtain a first difference between the temperature inside the box and the inlet liquid temperature, and determine whether the cooling flow path has a cooling effect based on the first difference; If the first difference is greater than or equal to a preset difference, then the cooling flow path is determined to have a cooling effect; If the first difference is less than the preset difference, then it is determined that the cooling flow path has no cooling effect.

7. A control device for controlling a heat pump air conditioner, wherein the heat pump air conditioner is provided with a cooling flow path to dissipate heat from an electrical control box, and an electric valve is provided in the cooling flow path for controlling the opening and closing of the cooling flow path and controlling the flow rate of the cooling flow path, characterized in that, The control device includes: The acquisition module is used to acquire the internal temperature of the electrical control box and the inlet temperature of the cooling flow path; it is also used to acquire a first difference between the internal temperature and the inlet temperature when the inlet temperature and the internal temperature reach a first condition, and to determine the difference range in which the first difference is located. The judgment module is used to determine whether the cooling flow path has a cooling effect based on the internal temperature of the electrical control box and the inlet liquid temperature of the cooling flow path after the air conditioner has been running for a preset time; it is also used to determine whether the inlet liquid temperature and the internal temperature of the box have reached a first condition based on the inlet liquid temperature and the internal temperature of the box. When the inlet liquid temperature is lower than a first preset temperature and the internal temperature of the box is higher than a second preset temperature, it is determined that the inlet liquid temperature and the internal temperature of the box have reached the first condition. The control module is configured to, after determining that the cooling flow path has a cooling effect, control the electric valve to open and close according to the temperature inside the box and the inlet liquid temperature; it is also configured to, after determining that the inlet liquid temperature and the temperature inside the box reach the first condition, control the electric valve to switch from closed to open; and it is also configured to, adjust the opening degree of the electric valve according to the difference range in which the first difference value is located.

8. A heat pump air conditioner, characterized in that, The device includes a memory and a processor, the memory storing a computer program, and the processor running the computer program in the memory to perform the steps of the control method according to any one of claims 1-6.

9. A storage medium, characterized in that, The storage medium stores a computer program, which is executed and loaded by a processor to perform the steps of the control method according to any one of claims 1-6.

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