Heat pump air conditioning system wind control method, device, equipment and storage medium

Abstract

The present invention relates to the field of air conditioning technology, and discloses a heat pump air conditioning system wind shield control method, device, equipment and storage medium, which are used to solve the problem that when the air source heat pump air conditioning system is in low-temperature cooling or low-temperature heating, the condensation temperature is too low due to wind or the heating and defrosting heat is taken away, resulting in easy damage to the compressor and poor heat exchange. The heat pump air conditioning system wind shield control method includes: in response to a power-on instruction, obtaining the user's set temperature, indoor ambient temperature, outdoor ambient temperature and operating status parameters; determining the working mode according to the set temperature and indoor ambient temperature, and the working mode is a cooling mode or a heating mode; when the working mode is the cooling mode, controlling the wind shield component according to the outdoor ambient temperature and the operating status parameters; when the working mode is the heating mode, judging whether to start the defrosting function according to the outdoor ambient temperature and the operating status parameters; if so, controlling the wind shield component according to the outdoor ambient temperature and the operating status parameters.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a method, device, equipment and storage medium for controlling windage in a heat pump air conditioning system. Background Art

[0002] A heat pump air conditioning system is an air conditioning system that uses a four-way valve to change the flow direction of the refrigerant so that the functions of the heat exchange equipment installed indoors and outdoors can be interchanged to achieve cooling and heating. The heat pump unit usually installed outdoors includes a heat exchanger. When cooling is required, the heat exchanger is used as a condenser, and when heating is used, it is used as an evaporator. Common heat exchangers are usually outdoor heat exchangers.

[0003] With the continuous maturity of low-temperature heat pump technology, low-temperature air source heat pump air conditioning systems have been widely used in northern regions. However, the long-term strong winds in the northern regions in winter can easily lead to poor heat exchange of heat pump units installed outdoors and damage key components of heat pump air conditioning systems. In low-temperature refrigeration, the heat exchanger is affected by the wind, and the condensation heat exchange will increase significantly, resulting in insufficient pressure increase of the refrigerant when passing through the compressor, that is, the operating pressure ratio is too small, which can easily lead to excessive load on the compressor and even damage the compressor. In low-temperature heating, water vapor in the air tends to gradually condense on the surface of the outdoor heat exchanger to form white frost, and the heat in the defrost mode is easily carried away by the strong wind, resulting in unclean defrosting, which seriously affects the heat exchange effect and reduces the heating capacity of the heat pump air conditioning system. Summary of the invention

[0004] The present invention provides a heat pump air conditioning system wind control method, device, equipment and storage medium, which are used to solve the problem that when the air source heat pump air conditioning system is in low-temperature cooling or low-temperature heating, the condensing temperature is too low due to wind or the heating and defrosting heat is taken away, resulting in easy damage to the compressor and poor heat exchange.

[0005] A first aspect of the present invention provides a method for controlling a wind shield of a heat pump air-conditioning system, comprising: in response to a power-on instruction, obtaining a user's set temperature, indoor ambient temperature, outdoor ambient temperature and operating status parameters; determining an operating mode according to the set temperature and the indoor ambient temperature, the operating mode being a cooling mode or a heating mode; when the operating mode is a cooling mode, controlling the wind shield component according to the outdoor ambient temperature and the operating status parameters; when the operating mode is a heating mode, determining whether to start a defrost function according to the outdoor ambient temperature and the operating status parameters; if so, controlling the wind shield component according to the outdoor ambient temperature and the operating status parameters.

[0006] In a feasible implementation, when the working mode is the cooling mode, the wind shield component is controlled according to the outdoor ambient temperature and the operating status parameters, including: parsing the operating status parameters to obtain the coil temperature of the outdoor heat exchanger; generating a wind shield component opening instruction when the outdoor ambient temperature and the coil temperature meet a first preset condition; generating a wind shield component closing instruction when the outdoor ambient temperature and the coil temperature meet a second preset condition.

[0007] In a feasible implementation, when the outdoor ambient temperature and the coil temperature meet a first preset condition, a wind shield component start instruction is generated, including: obtaining a preset target ambient temperature and a preset target coil temperature, the target ambient temperature being the outdoor ambient temperature corresponding to a preset start-up wind shield function in the heat pump air-conditioning system, and the target coil temperature being the coil temperature corresponding to the outdoor heat exchanger when the wind shield function is preset to be started in the heat pump air-conditioning system; when the outdoor ambient temperature is lower than the preset target ambient temperature, and the coil temperature is lower than the preset target coil temperature, a wind shield component start instruction is generated.

[0008] In a feasible implementation, when the outdoor ambient temperature and the coil temperature meet a second preset condition, a wind shield component closing instruction is generated, including: calculating the difference between the outdoor ambient temperature and a preset target ambient temperature to obtain a first ring temperature difference; calculating the difference between the coil temperature and a preset target coil temperature to obtain a first coil temperature difference; when the first ring temperature difference is greater than a preset first threshold value or the first coil temperature difference is greater than a preset second threshold value, a wind shield component closing instruction is generated.

[0009] In a feasible implementation manner, when the working mode is the heating mode, whether to start the defrost function is determined according to the outdoor ambient temperature and the operating status parameters, including: when the working mode is the heating mode, parsing the operating status parameters to obtain the coil temperature, evaporating temperature, return water temperature of the outdoor heat exchanger and the operating time of the heat pump air-conditioning system; calculating the difference between the outdoor ambient temperature and the coil temperature to obtain the ring temperature difference; calculating the difference between the outdoor ambient temperature and the evaporating temperature to obtain the ring evaporation temperature difference; judging that the operating time is greater than or equal to a preset defrost time interval, if so, judging that the ring temperature difference is greater than or equal to a preset defrost ring temperature difference, or whether the ring evaporation temperature difference is greater than or equal to a preset defrost ring temperature difference; if so, judging whether the evaporation temperature is less than or equal to a preset target defrost evaporation temperature; if so, judging whether the return water temperature is greater than the preset target defrost return water temperature, if so, starting the defrost function.

[0010] In a feasible implementation, if so, the wind shield component is controlled according to the outdoor ambient temperature and the operating status parameters, including: when the defrost function is started, obtaining the preset target ambient temperature; calculating the difference between the outdoor ambient temperature and the preset target ambient temperature to obtain a second ring temperature difference; when the second ring temperature difference is less than zero, generating a wind shield component opening instruction; when the second ring temperature difference is greater than a preset third threshold or a defrost end instruction is received, generating a wind shield component closing instruction.

[0011] In a feasible implementation, in response to a wind shield assembly opening instruction, a preset wind shield assembly opening table is obtained; a target opening corresponding to the wind shield assembly is determined based on the outdoor ambient temperature, the operating status parameters and the wind shield assembly opening table; and the opening of the wind shield assembly is adjusted based on the target opening.

[0012] A second aspect of the present invention provides a wind shield control device for a heat pump air-conditioning system, comprising: a first acquisition module, for obtaining a user's set temperature, indoor ambient temperature, outdoor ambient temperature and operating status parameters in response to a power-on instruction; a first determination module, for determining an operating mode based on the set temperature and the indoor ambient temperature, the operating mode being a cooling mode or a heating mode; a first control module, for controlling the wind shield component based on the outdoor ambient temperature and the operating status parameters when the operating mode is the cooling mode; a second determination module, for determining whether to start a defrost function based on the outdoor ambient temperature and the operating status parameters when the operating mode is the heating mode; and a second control module, for controlling the wind shield component based on the outdoor ambient temperature and the operating status parameters if so.

[0013] In a feasible embodiment, the first control module is specifically used for: an analysis unit, used to analyze the operating status parameters to obtain the coil temperature of the outdoor heat exchanger; a starting unit, used to generate an opening instruction of the wind shield component when the outdoor ambient temperature and the coil temperature meet a first preset condition; a closing unit, used to generate a closing instruction of the wind shield component when the outdoor ambient temperature and the coil temperature meet a second preset condition.

[0014] In a feasible embodiment, the starting unit is specifically used to: obtain a preset target ambient temperature and a preset target coil temperature, the target ambient temperature being the outdoor ambient temperature corresponding to the preset start-up wind shield function in the heat pump air-conditioning system, and the target coil temperature being the coil temperature corresponding to the outdoor heat exchanger when the preset start-up wind shield function in the heat pump air-conditioning system; when the outdoor ambient temperature is lower than the preset target ambient temperature, and the coil temperature is lower than the preset target coil temperature, a wind shield component start instruction is generated.

[0015] In a feasible implementation, the closing unit is specifically used to: calculate the difference between the outdoor ambient temperature and the preset target ambient temperature to obtain a first ring temperature difference; calculate the difference between the coil temperature and the preset target coil temperature to obtain a first coil temperature difference; when the first ring temperature difference is greater than a preset first threshold or the first coil temperature difference is greater than a preset second threshold, generate a wind shield component closing instruction.

[0016] In a feasible implementation, the second determination module is specifically used for: when the working mode is the heating mode, parsing the operating status parameters to obtain the coil temperature, evaporating temperature, return water temperature of the outdoor heat exchanger and the operating time of the heat pump air-conditioning system; calculating the difference between the outdoor ambient temperature and the coil temperature to obtain the ring temperature difference; calculating the difference between the outdoor ambient temperature and the evaporating temperature to obtain the ring-evaporation temperature difference; judging that the operating time is greater than or equal to a preset defrost time interval, and if so, judging that the ring temperature difference is greater than or equal to a preset defrost ring temperature difference, or whether the ring-evaporation temperature difference is greater than or equal to a preset defrost ring temperature difference; if so, judging whether the evaporating temperature is less than or equal to a preset target defrost evaporation temperature; if so, judging whether the return water temperature is greater than a preset target defrost return water temperature, and if so, starting the defrost function.

[0017] In a feasible embodiment, the second control module is specifically used for: if yes, then controlling the wind shield assembly according to the outdoor ambient temperature and the operating status parameters, including: when the defrost function is started, obtaining the preset target ambient temperature; calculating the difference between the outdoor ambient temperature and the preset target ambient temperature to obtain a second ring temperature difference; when the second ring temperature difference is less than zero, generating a wind shield assembly opening instruction; when the second ring temperature difference is greater than a preset third threshold or a defrost end instruction is received, generating a wind shield assembly closing instruction.

[0018] In a feasible embodiment, a second acquisition module is used to obtain a preset wind shield component opening table in response to a wind shield component opening instruction; a processing module is used to determine the target opening corresponding to the wind shield component based on the outdoor ambient temperature, the operating status parameters and the wind shield component opening table; and an adjustment module is used to adjust the opening of the wind shield component according to the target opening.

[0019] The third aspect of the present invention provides a heat pump air conditioning system wind shield control device, comprising: a memory and at least one processor, wherein the memory stores instructions; the at least one processor calls the instructions in the memory so that the heat pump air conditioning system wind shield control device executes the above-mentioned heat pump air conditioning system wind shield control method.

[0020] A fourth aspect of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores instructions, which, when executed on a computer, enable the computer to execute the above-mentioned heat pump air conditioning system wind control method.

[0021] In the technical solution provided by the present invention, the windshield control method of the heat pump air-conditioning system is executed by a windshield device of an outdoor heat exchanger, the windshield device of the outdoor heat exchanger includes an outer frame of the outdoor heat exchanger and a windshield assembly, the windshield assembly is fixedly installed on the outer frame, the windshield assembly includes a driving device and a windshield component, the driving device is transmission-connected to the windshield component, and in response to a power-on instruction, obtains the user's set temperature, indoor ambient temperature, outdoor ambient temperature and operating status parameters; determines the working mode according to the set temperature and the indoor ambient temperature, and the working mode is a cooling mode or a heating mode; when the working mode is the cooling mode, controls the windshield assembly according to the outdoor ambient temperature and the operating status parameters; when the working mode is the heating mode, determines whether to start the defrost function according to the outdoor ambient temperature and the operating status parameters; if so, controls the windshield assembly according to the outdoor ambient temperature and the operating status parameters. In the embodiment of the present invention, the windshield device provided on the heat pump air conditioner frame solves the problem of large heat dissipation loss due to wind. The windshield component is precisely controlled in response to the outdoor ambient temperature and the operating state parameters. In the cooling mode, the wind can be effectively blocked from entering the outdoor heat exchanger, and the pressure increase of the refrigerant when passing through the compressor is not enough, resulting in too small operating pressure ratio. When defrosting in the heating mode, the wind can be effectively blocked from entering the outdoor heat exchanger, resulting in the problem of unclean heating and defrosting, and the energy efficiency and stability of the heat pump air conditioning system can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the installation of a windshield device according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic structural diagram of a rolling curtain type windshield component according to an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of an embodiment of a windshield control method in an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of another embodiment of a wind shielding control method for a heat pump air conditioning system according to an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of an embodiment of a wind shield control device for a heat pump air conditioning system according to an embodiment of the present invention;

[0027] Figure 6A schematic diagram of another embodiment of a wind shield control device for a heat pump air conditioning system according to an embodiment of the present invention;

[0028] Figure 7 It is a schematic diagram of an embodiment of a wind shield control device of a heat pump air conditioning system in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The present invention provides a wind blocking control method, device, equipment and storage medium for a heat pump air-conditioning system, which are used in low-temperature and windy scenarios to avoid excessive heat exchange during low-temperature refrigeration, ensure that the compressor operates at a stable operating pressure ratio, extend the operating life of the compressor, and avoid defrosting heat being carried away by wind during heating and defrosting, thereby improving defrosting efficiency and enhancing the energy efficiency and stability of the heat pump air-conditioning system.

[0030] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" or "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] It can be understood that the wind shielding control method of the heat pump air-conditioning system of the present invention is executed through the wind shielding device of the outdoor heat exchanger. The heat pump air-conditioning system is used to obtain and process real-time environmental data and real-time operating status parameters, and generate corresponding control instructions for controlling the wind shielding device of the outdoor heat exchanger to perform corresponding wind shielding operations.

[0032] Figure 1 The present invention is a schematic diagram of a heat pump air conditioning system in which a windshield device is installed on an outdoor heat exchanger 1. At this time, the windshield device is in a fully open state. The windshield device of the outdoor heat exchanger is described below, including an outer frame 2 of the outdoor heat exchanger and a windshield assembly 3. The windshield assembly 3 is fixedly installed on the outer frame. The windshield assembly 3 includes a driving device 31 and a windshield component 32. The driving device is transmission-connected to the windshield component. The heat pump air conditioning system controls the driving device to open or close the windshield component. When the windshield component is fully opened (i.e., the opening degree is 100%), it can cover the outer frame of the outdoor heat exchanger to achieve the purpose of windshield.

[0033] Optionally, the outdoor heat exchanger can be a fin heat exchanger or other types of heat exchangers. The heat pump air conditioner absorbs or releases heat from the outdoor environment through the outdoor heat exchanger to achieve indoor cooling and heating functions. Taking the fin heat exchanger as an example, the fin radiator is usually composed of an internally threaded copper tube, a heat dissipation fin and a header. A header is provided at both ends of the internally threaded copper tube for distributing and collecting the refrigerant. Corrugated or louvered heat dissipation fins are provided between adjacent internally threaded copper tubes to enhance the heat exchange efficiency between the evaporator and the air side. There is a certain distance between the outer frame and the heat dissipation fins. When the wind shield assembly is opened, it can block the air inlet of the outdoor heat exchanger.

[0034] In some special occasions, there is also a need for refrigeration under low temperature conditions. For example, closed indoor scenes such as KTV also need indoor air conditioning under low temperature conditions. If there is a strong wind outdoors and the ambient temperature is low, the heat exchange temperature difference is large, and the outdoor unit air volume is too large, resulting in low high pressure, which causes the system to fail to operate normally. The existing outdoor heat exchanger does not have an air valve, which easily causes excessive heat exchange between the heat dissipation fins and the outside world, resulting in insufficient pressure increase of the refrigerant when passing through the compressor, that is, the operating pressure ratio is too small, which easily causes the compressor to be overloaded or even damaged. In the heating and defrosting scenario, in order to prevent the heat in the defrosting mode from being carried away by strong winds, resulting in unclean defrosting of the heat dissipation fins and affecting the defrosting and heat exchange effects, this embodiment sets a windshield component on the outer frame of the fin radiator to control the air volume of the fin radiator through the windshield component.

[0035] Optionally, the driving device includes a driving motor and a transmission component, the driving motor and the transmission component are fixedly connected, the transmission component is connected to the wind shield component, the driving motor is connected to the wind shield component through the transmission component, and drives the wind shield component to move to control the area of ​​the cooling fins of the outdoor radiator exposed to the wind field.

[0036] Optionally, the opening degree of the windshield component can be adjusted according to actual needs. The above-mentioned windshield component connection can be a roller-type windshield component, a shutter-type windshield component, a plate-type windshield component, or other types of windshield components. The transmission component can be a wheel or a shaft. The user can choose according to the actual situation, and this application does not limit it. Among them, the roller-type windshield component can be composed of a roller curtain made of flexible fabric, and the opening and closing control of the roller-type windshield component is completed by rolling up and lowering the roller curtain; the shutter-type windshield component can be composed of a plurality of blades arranged horizontally or vertically and parallel to each other, and the opening and closing control of the shutter-type windshield component is completed by the opening and closing angle of the blades; the plate-type windshield component is composed of one or two windshield plates that can move left and right or open and close up and down, and the opening and closing control of the plate-type windshield component is completed by controlling the moving position or the up and down opening and closing angle of the windshield plate.

[0037] It can be understood that according to different types of windshield components, there are many possible installation positions of the windshield assembly and the outer frame, such as fixedly installed on the top of the outer frame, and the windshield component is controlled to be lowered and raised by a driving motor, or controlled by controlling the opening and closing angle. Another example is movably installed on the left and / or right side of the outer frame, and the top and bottom of the outer frame have sliding rails, and the position of the windshield assembly is controlled by controlling the left and right movement of the sliding rails.

[0038] It should be further explained that the windshield component can be controlled by a built-in controller of the heat pump air conditioning system, or a controller for the windshield device can be set separately, and the windshield device can also be turned on and off by a manual button.

[0039] Reference Figure 2 A schematic diagram of a windshield assembly structure, wherein the windshield assembly 3 is a rolling curtain type windshield assembly, the windshield component 32 includes a rolling curtain tube 321, a rolling curtain 322, and a rolling curtain bottom rod 323, and the driving device 31 includes a tubular motor 311 and a rotating wheel 312;

[0040] The tubular motor 311 is disposed inside the rolling curtain tube 321 , and a rotating wheel 312 is disposed at the output end of the tubular motor 311 , and the outer side of the rotating wheel 312 is fixedly mounted to the inner side of the rolling curtain tube 321 ;

[0041] The rear end of the tubular motor 311 is fixedly connected to the first mounting seat 324;

[0042] A tail plug 326 is provided at one end of the rolling curtain tube 321, and the rolling curtain tube 321 is movably connected to the second mounting seat 325 through the tail plug 326, the rolling curtain 322 is rolled up on the outside of the rolling curtain tube 321, and the lower end of the rolling curtain 322 is clamped on the rolling curtain bottom rod 323, and the first mounting seat 324 and the second mounting seat 325 are fixedly installed on the top of the outer frame of the heat exchanger.

[0043] The above-mentioned roller curtain windshield assembly has a simple structure and ingenious design, and can effectively solve the problem of large heat dissipation loss caused by wind, thereby effectively solving the problem of too small low-temperature refrigeration pressure ratio and unclean heating and defrosting caused by wind.

[0044] For ease of understanding, the specific process of the embodiment of the present invention is described below. Figure 3 An embodiment of the wind shielding control method of the heat pump air conditioning system in the embodiment of the present invention includes:

[0045] 301. In response to a power-on instruction, obtain a user's set temperature, indoor ambient temperature, outdoor ambient temperature, and operating status parameters.

[0046] When the heat pump air conditioning system receives the user's power-on command, it obtains the set temperature currently set by the user and the ambient temperature. The ambient temperature includes the indoor ambient temperature and the outdoor ambient temperature, which can be collected through temperature sensors installed on the indoor unit and the outdoor unit. Furthermore, the real-time operating status parameters of the heat pump air conditioning system are obtained to adjust the control instructions in real time.

[0047] Among them, the operating status parameters may include the coil temperature (i.e. fin temperature) of the outdoor heat exchanger, the evaporating temperature, the return water temperature and the operating time of the heat pump air-conditioning system. The evaporating temperature refers to the temperature of the refrigerant when it evaporates in the evaporator, that is, the saturation temperature corresponding to the low pressure; the return water temperature refers to the temperature returned to the heat pump air-conditioning system after passing through the indoor radiator; the coil temperature refers to the temperature of the cooling fins in the outdoor heat exchanger; the operating time is the accumulated operating time of the heat pump air-conditioning system after receiving the start-up command, and the timing will not be cleared when the indoor ambient temperature reaches the set temperature and stops or when the system is manually shut down.

[0048] 302. Determine a working mode according to the set temperature and the indoor ambient temperature, the working mode being a cooling mode or a heating mode.

[0049] The heat pump air conditioning system calculates the difference between the set temperature and the indoor ambient temperature. When the difference is greater than zero, the operating mode is determined to be the heating mode. When the difference is less than zero, the operating mode is determined to be the cooling mode.

[0050] 303. When the working mode is a cooling mode, control the wind shield component according to the outdoor ambient temperature and the operating state parameters.

[0051] After receiving the cooling command, the heat pump air conditioning system parses the operating status parameters to obtain the coil temperature of the outdoor heat exchanger; when the outdoor ambient temperature and the coil temperature meet the first preset condition, a wind shield component opening instruction is generated; when the outdoor ambient temperature and the coil temperature meet the second preset condition, a wind shield component closing instruction is generated.

[0052] Specifically, a preset target ambient temperature and a preset target coil temperature are obtained, wherein the target ambient temperature is the outdoor ambient temperature corresponding to the preset start-up wind shield function in the heat pump air-conditioning system, and the target coil temperature is the coil temperature corresponding to the outdoor heat exchanger when the preset start-up wind shield function in the heat pump air-conditioning system; when the outdoor ambient temperature is lower than the preset target ambient temperature, and the coil temperature is lower than the preset target coil temperature, a wind shield component start instruction is generated.

[0053] Specifically, the difference between the outdoor ambient temperature and the preset target ambient temperature is calculated to obtain a first ring temperature difference; the difference between the coil temperature and the preset target coil temperature is calculated to obtain a first coil temperature difference; when the first ring temperature difference is greater than a preset first threshold or the first coil temperature difference is greater than a preset second threshold, a wind shield component closing instruction is generated.

[0054] For example, the heat pump air conditioning system, based on the outdoor ambient temperature and the coil temperature of the outdoor heat exchanger, if the outdoor ambient temperature is lower than the target ambient temperature and the coil temperature of the fin heat exchanger is lower than the target coil temperature, opens the wind screen to block the wind, so as to reduce the loss of heat dissipation of the fin heat exchanger due to the external wind field, thereby increasing the condensing pressure and the system compression ratio; if the outdoor ambient temperature is more than 2 degrees Celsius higher than the target ambient temperature or the coil temperature of the fin heat exchanger is more than 5 degrees Celsius higher than the target coil temperature, closes the wind screen to resume normal heat exchange.

[0055] It can be understood that the target ambient temperature is set according to the temperature conditions in the actual area, the target coil temperature should be set according to the specific performance of the outdoor heat exchanger, the first threshold and the second threshold can be adjusted according to the actual situation, the smaller the first threshold and the second threshold are set, the more frequently the heat pump air conditioning system controls the windshield component, and the higher the sensitivity of the adjustment. The setting of the first threshold and the second threshold should take into account the heat exchange efficiency under low-temperature refrigeration and the stability of equipment such as the compressor.

[0056] 304. When the working mode is the heating mode, determine whether to start the defrosting function according to the outdoor ambient temperature and the operating status parameters.

[0057] When the heat pump air conditioning system receives a heating instruction, it determines whether to start the defrosting function according to the outdoor ambient temperature and the operating status parameters.

[0058] Specifically, the heat pump air-conditioning system parses the operating status parameters to obtain the coil temperature, evaporating temperature, return water temperature of the outdoor heat exchanger and the operating time of the heat pump air-conditioning system; calculates the difference between the outdoor ambient temperature and the coil temperature to obtain the ring temperature difference; calculates the difference between the outdoor ambient temperature and the evaporating temperature to obtain the ring-evaporation temperature difference; judges whether the operating time is greater than or equal to a preset defrost time interval, and if so, judges whether the ring temperature difference is greater than or equal to a preset defrost ring temperature difference, or whether the ring-evaporation temperature difference is greater than or equal to a preset defrost ring-evaporation temperature difference; if so, judges whether the evaporating temperature is less than or equal to a preset target defrost evaporation temperature; if so, judges whether the return water temperature is greater than a preset target defrost return water temperature, and if so, starts the defrost function.

[0059] 305. If yes, control the wind shield assembly according to the outdoor ambient temperature and the operating status parameters.

[0060] When the heat pump air conditioning system starts the defrost function, the preset target ambient temperature is obtained; the difference between the outdoor ambient temperature and the preset target ambient temperature is calculated to obtain the second ring temperature difference; when the second ring temperature difference is less than zero, a wind shield component opening instruction is generated; when the second ring temperature difference is greater than a preset third threshold or a defrost end instruction is received, a wind shield component closing instruction is generated.

[0061] For example, if the outdoor ambient temperature is lower than the target ambient temperature, the wind screen is opened to block the wind, so as to reduce the loss of heat dissipation of the fin heat exchanger due to the external wind field, ensure sufficient heat for defrosting, and improve the defrosting efficiency; if the outdoor ambient temperature is higher than the target ambient temperature by more than 2 degrees Celsius or the defrost command ends, the wind screen is closed to resume normal heat exchange.

[0062] It is understandable that when the heat pump air conditioner is defrosting its outdoor heat exchanger, the heat pump air conditioner will switch to a cooling operation mode which is opposite to the heating operation mode, and use the high-temperature refrigerant discharged by the compressor to defrost the outdoor heat exchanger. During the defrosting operation, the indoor unit of the heat pump air conditioner stops supplying heat, and the thermal comfort of the indoor environment of the heat pump air conditioner cannot be effectively guaranteed. Therefore, the third threshold value can be adjusted according to actual conditions. The smaller the set third threshold value, the more frequent the heat pump air conditioning system controls the wind shield component and the higher the adjustment sensitivity. The setting of the third threshold value should take into account both the heating efficiency and the defrosting efficiency under heating and defrosting.

[0063] In the embodiment of the present invention, the windshield device provided on the heat pump air conditioner frame solves the problem of large heat dissipation loss due to wind. The windshield component is precisely controlled in response to the outdoor ambient temperature and the operating state parameters. In the cooling mode, the wind can be effectively blocked from entering the outdoor heat exchanger, and the pressure increase of the refrigerant when passing through the compressor is not enough, resulting in too small operating pressure ratio. When defrosting in the heating mode, the wind can be effectively blocked from entering the outdoor heat exchanger, resulting in the problem of unclean heating and defrosting, and the energy efficiency and stability of the heat pump air conditioning system can be further improved.

[0064] See also Figure 4 Another embodiment of the wind shielding control method of the heat pump air conditioning system in the embodiment of the present invention includes:

[0065] 401. In response to a power-on instruction, obtain a user's set temperature, indoor ambient temperature, outdoor ambient temperature, and operating status parameters.

[0066] 402. Determine a working mode according to the set temperature and the indoor ambient temperature, the working mode being a cooling mode or a heating mode.

[0067] 403. When the working mode is a cooling mode, the wind shield component is controlled according to the outdoor ambient temperature and the operating state parameters.

[0068] Steps 401-403 are similar to steps 301-303, and can be executed with reference to steps 301-303, which will not be repeated here.

[0069] 404. When the working mode is the heating mode, determine whether to start the defrosting function according to the outdoor ambient temperature and the operating status parameters.

[0070] When the heat pump air conditioning system receives a heating instruction, it retrieves the preset defrost time interval table and defrost ring pipe temperature difference table (or defrost ring wing temperature difference table) according to the outdoor ambient temperature to determine the target defrost time interval and target defrost ring pipe temperature difference.

[0071] Among them, the defrost time interval table is used to indicate the correspondence between multiple outdoor ambient temperature intervals and defrost time intervals. The defrost time interval is usually the shortest when it is close to 0°C. The higher or lower the ambient temperature, the longer the defrost time interval will be. The specific interval length can be adjusted according to actual conditions; the defrost ring pipe temperature difference table is used to indicate the correspondence between multiple outdoor ambient temperature intervals and the defrost ring pipe temperature difference. The lower the outdoor ambient temperature, the smaller the defrost ring pipe temperature difference.

[0072] As an example, when the outdoor ambient temperature is greater than or equal to 5 degrees Celsius, the first defrost time interval is determined as the target defrost time interval; when the outdoor ambient temperature is between -2 degrees Celsius and -5 degrees Celsius, the second defrost time interval is determined as the target defrost time interval; when the outdoor ambient temperature is between -10 degrees Celsius and -2 degrees Celsius, the third defrost time interval is determined as the target defrost time interval; when the outdoor ambient temperature is less than or equal to -10 degrees Celsius, the fourth defrost time interval is determined as the target defrost time interval, wherein the corresponding durations of the first defrost time interval, the second defrost time interval, the third defrost time interval, and the fourth defrost time interval can be set to be shortened in sequence, or the corresponding durations of the first defrost time interval, the second defrost time interval, the third defrost time interval, and the fourth defrost time interval can be set according to actual conditions.

[0073] Furthermore, the heat pump air conditioning system may also obtain the ambient humidity, and adjust the target defrost time interval according to the ambient humidity to obtain an adjusted target defrost time interval.

[0074] Furthermore, when the heat pump air conditioning system is defrosted for the first time after being powered on or the compressor is shut down for more than 2 hours, frosting is obvious in the low temperature environment, and a corresponding time length can be set for the first defrost time interval.

[0075] As an example, when the outdoor ambient temperature is greater than or equal to 5 degrees Celsius, the first defrost ring temperature difference is determined as the target defrost ring temperature difference; when the outdoor ambient temperature is between minus 2 degrees Celsius and plus 5 degrees Celsius, the second defrost ring temperature difference is determined as the target defrost ring temperature difference; when the outdoor ambient temperature is between minus 10 degrees Celsius and minus 2 degrees Celsius, the third defrost ring temperature difference is determined as the target defrost ring temperature difference; when the outdoor ambient temperature is less than or equal to minus 10 degrees Celsius, the fourth defrost ring temperature difference is determined as the target defrost ring temperature difference, wherein the temperature differences corresponding to the first defrost ring temperature difference, the second defrost ring temperature difference, the third defrost ring temperature difference, and the fourth defrost ring temperature difference can be set to decrease in sequence, or the temperature differences corresponding to the first defrost ring temperature difference, the second defrost ring temperature difference, the third defrost ring temperature difference, and the fourth defrost ring temperature difference can be set according to actual conditions.

[0076] The heat pump air conditioning system determines whether to start the defrost function based on the analyzed coil temperature, evaporation temperature, return water temperature and the operating time of the heat pump air conditioning system, as well as the target defrost time interval and target defrost loop temperature difference determined according to the outdoor ambient temperature.

[0077] Specifically, when all of the following conditions are met, the heat pump air conditioning system starts the defrosting function, the conditions are as follows:

[0078] (1) The running time is greater than or equal to the preset defrost time interval;

[0079] (2) The difference between the outdoor ambient temperature and the coil temperature is greater than or equal to the target defrost loop temperature difference, or the difference between the outdoor ambient temperature and the evaporation temperature is greater than or equal to the target defrost loop evaporation temperature difference;

[0080] (3) The evaporation temperature is less than or equal to the preset target defrost evaporation temperature;

[0081] (4) The return water temperature is greater than the preset target defrost return water temperature.

[0082] It is understandable that the target defrost ring evaporation temperature difference can also be set in multiple intervals according to the outdoor ambient temperature to improve the flexibility of the defrost function startup conditions. By real-time sensing of the environment and system operating status, the defrost time interval and the corresponding preset value can be dynamically corrected to accurately grasp the defrost timing; improve the system defrost efficiency, defrost more when there is more frost, defrost less when there is less frost, and no defrost at all when there is no frost, effectively avoiding the heating loss of the conventional defrost mode.

[0083] 405. If yes, control the wind shield assembly according to the outdoor ambient temperature and the operating status parameters.

[0084] When the heat pump air conditioning system starts the defrosting function, the operating state parameters are analyzed to obtain the corresponding number of units and windshield components of the outdoor heat exchanger, such as Figure 1The outdoor heat exchanger includes two left and right units, and a wind shield component is provided on the outer frame of each unit. If there are multiple units and multiple wind shield components, the multiple units are controlled to alternately start the defrost function according to the outdoor ambient temperature and the operating status parameters, and the multiple wind shield components are controlled to alternately start the wind shield function to take into account both heating needs and defrost needs. The wind shield component only blocks the outdoor heat exchanger unit that is defrosting, while ensuring that other units are not blocked by the wind shield component and can continue to perform heating, thereby avoiding the inconvenience caused by the suspension of indoor heating when all units start defrosting.

[0085] Furthermore, based on the differences in operating parameters of different units, units with more serious frosting can be defrosted and shielded from wind first, while units with less frosting can be retained to continue heating. The degree of frost can be judged based on the current ring pipe temperature difference, return water temperature and evaporation temperature corresponding to each unit.

[0086] 406. In response to the wind shield assembly opening instruction, obtain a preset wind shield assembly opening table.

[0087] When the heat pump air conditioning system receives an instruction to open the windshield component, it can also obtain a preset windshield component opening table, which is used to indicate the opening of the corresponding windshield component in different situations and to indicate the windshield degree of the windshield component.

[0088] Furthermore, the heat pump air conditioning system can evaluate the windshield effect based on the outdoor ambient temperature and the operating status parameters, and dynamically adjust the opening table of the windshield component according to the windshield effect to adapt to the wind direction characteristics and installation position of the windshield component in different regions.

[0089] 407. Determine a target opening corresponding to the wind shield component according to the outdoor ambient temperature, the operating status parameter and the wind shield component opening table.

[0090] The heat pump air conditioning system queries the windshield component opening table according to the outdoor ambient temperature and the operating status parameters to determine the target opening corresponding to the windshield component, so as to ensure that the windshield component can provide appropriate windshield effect under different circumstances.

[0091] 408. Adjust the opening of the wind shield assembly according to the target opening.

[0092] The heat pump air conditioning system dynamically adjusts the windshield assembly according to the target opening. When the roller shutter windshield assembly is fully opened, that is, the opening is 100%, the roller shutter is fully lowered, and the bottom rod of the roller shutter reaches the bottom of the outer frame, which can completely block the incoming wind. For example, when the shutter windshield assembly is partially opened, the blade angle is adjusted, and the incoming air volume is half of the incoming air volume when the opening is 100%. When the opening is 100%, multiple blades of the shutter windshield assembly are connected in sequence to form a whole, which can completely block the incoming wind. The heat pump air conditioning system can flexibly control the windshield effect by adjusting the opening of the windshield assembly in real time to meet different needs and environmental conditions.

[0093] In the embodiment of the present invention, in the low-temperature and windy scenario, excessive heat exchange during low-temperature cooling is avoided, the compressor is guaranteed to operate at a stable operating pressure ratio, the operating life of the compressor is extended, and the defrost heat is avoided to be carried away by the wind during heating and defrosting, thereby improving the defrost efficiency and the energy efficiency and stability of the heat pump air-conditioning system. By dynamically correcting the defrost time interval and the corresponding preset value through real-time perception of the environment and the system operating status, the defrost timing can be accurately grasped, the defrost efficiency of the system can be improved, and further, the different units of the outdoor heat exchanger are alternately controlled to alternately start the defrost function and the wind shield function, taking into account both the heating demand and the defrost demand, and the opening of the wind shield component is accurately and dynamically adjusted through the wind shield component opening table, thereby improving the flexibility of the wind shield function of the heat pump air-conditioning system.

[0094] The above describes the wind shielding control method of the heat pump air conditioning system in the embodiment of the present invention. The following describes the wind shielding control device of the heat pump air conditioning system in the embodiment of the present invention. Figure 5 In one embodiment of the present invention, a wind shield control device for a heat pump air conditioning system includes:

[0095] The first acquisition module 501 is used to obtain the user's set temperature, indoor ambient temperature, outdoor ambient temperature and operating status parameters in response to the power-on instruction;

[0096] A first determining module 502 is used to determine a working mode according to the set temperature and the indoor ambient temperature, wherein the working mode is a cooling mode or a heating mode;

[0097] A first control module 503, configured to control the wind shield component according to the outdoor ambient temperature and the operating state parameter when the operating mode is a cooling mode;

[0098] A second determination module 504 is used to determine whether to start the defrosting function according to the outdoor ambient temperature and the operating state parameter when the working mode is the heating mode;

[0099] The second control module 505 is used to control the wind shield component according to the outdoor ambient temperature and the operating status parameters.

[0100] In the embodiment of the present invention, the windshield device provided on the heat pump air conditioner frame solves the problem of large heat dissipation loss due to wind. The windshield component is precisely controlled in response to the outdoor ambient temperature and the operating state parameters. In the cooling mode, the wind can be effectively blocked from entering the outdoor heat exchanger, and the pressure increase of the refrigerant when passing through the compressor is not enough, resulting in too small operating pressure ratio. When defrosting in the heating mode, the wind can be effectively blocked from entering the outdoor heat exchanger, resulting in the problem of unclean heating and defrosting, and the energy efficiency and stability of the heat pump air conditioning system can be further improved.

[0101] See also Figure 6 Another embodiment of the wind shield control device of the heat pump air conditioning system in the embodiment of the present invention includes:

[0102] The first acquisition module 501 is used to obtain the user's set temperature, indoor ambient temperature, outdoor ambient temperature and operating status parameters in response to the power-on instruction;

[0103] A first determining module 502 is used to determine a working mode according to the set temperature and the indoor ambient temperature, wherein the working mode is a cooling mode or a heating mode;

[0104] A first control module 503, configured to control the wind shield component according to the outdoor ambient temperature and the operating state parameter when the operating mode is a cooling mode;

[0105] A second determination module 504 is used to determine whether to start the defrosting function according to the outdoor ambient temperature and the operating state parameter when the working mode is the heating mode;

[0106] The second control module 505 is used to control the wind shield component according to the outdoor ambient temperature and the operating status parameters.

[0107] In a feasible implementation manner, the first control module 503 includes:

[0108] The parsing unit 5031 is used to parse the operating state parameters to obtain the coil temperature of the outdoor heat exchanger;

[0109] A start unit 5032, configured to generate a wind shield component start instruction when the outdoor ambient temperature and the coil temperature meet a first preset condition;

[0110] The closing unit 5033 is used to generate a wind shield component closing instruction when the outdoor ambient temperature and the coil temperature meet a second preset condition.

[0111] In a feasible implementation, the starting unit 5032 is specifically used to: obtain a preset target ambient temperature and a preset target coil temperature, wherein the target ambient temperature is the outdoor ambient temperature corresponding to the preset start-up wind shield function in the heat pump air-conditioning system, and the target coil temperature is the coil temperature corresponding to the outdoor heat exchanger when the preset start-up wind shield function in the heat pump air-conditioning system; when the outdoor ambient temperature is lower than the preset target ambient temperature, and the coil temperature is lower than the preset target coil temperature, a wind shield component start instruction is generated.

[0112] In a feasible implementation, the closing unit 5033 is specifically used to: calculate the difference between the outdoor ambient temperature and the preset target ambient temperature to obtain a first ring temperature difference; calculate the difference between the coil temperature and the preset target coil temperature to obtain a first coil temperature difference; when the first ring temperature difference is greater than a preset first threshold or the first coil temperature difference is greater than a preset second threshold, generate a wind shield component closing instruction.

[0113] In a feasible implementation manner, the second determination module 504 is specifically used for: when the working mode is the heating mode, parsing the operating status parameters to obtain the coil temperature, evaporating temperature, return water temperature of the outdoor heat exchanger and the operating time of the heat pump air-conditioning system; calculating the difference between the outdoor ambient temperature and the coil temperature to obtain the ring temperature difference; calculating the difference between the outdoor ambient temperature and the evaporating temperature to obtain the ring-evaporation temperature difference; judging that the operating time is greater than or equal to a preset defrost time interval, and if so, judging that the ring temperature difference is greater than or equal to a preset defrost ring temperature difference, or whether the ring-evaporation temperature difference is greater than or equal to a preset defrost ring temperature difference; if so, judging whether the evaporation temperature is less than or equal to a preset target defrost evaporation temperature; if so, judging whether the return water temperature is greater than a preset target defrost return water temperature, and if so, starting the defrost function.

[0114] In a feasible embodiment, the second control module 505 is specifically used for: if yes, then controlling the wind shield component according to the outdoor ambient temperature and the operating status parameters, including: when the defrost function is started, obtaining the preset target ambient temperature; calculating the difference between the outdoor ambient temperature and the preset target ambient temperature to obtain a second ring temperature difference; when the second ring temperature difference is less than zero, generating a wind shield component opening instruction; when the second ring temperature difference is greater than a preset third threshold or a defrost end instruction is received, generating a wind shield component closing instruction.

[0115] In a feasible implementation manner, the wind shield control device of the heat pump air conditioning system further includes:

[0116] A second acquisition module 506, for acquiring a preset windshield component opening table in response to a windshield component opening instruction;

[0117] The processing module 507 is used to determine the target opening corresponding to the wind shield component according to the outdoor ambient temperature, the operating state parameter and the wind shield component opening table;

[0118] The adjustment module 508 is used to adjust the opening of the wind shield assembly according to the target opening.

[0119] In the embodiment of the present invention, in a low-temperature and windy scenario, excessive heat exchange during low-temperature refrigeration is avoided, the compressor is guaranteed to operate at a stable operating pressure ratio, the operating life of the compressor is extended, and the defrosting heat is avoided from being carried away by the wind during heating and defrosting, thereby improving the defrosting efficiency, and improving the energy efficiency and stability of the heat pump air-conditioning system. The opening of the wind shield component is dynamically adjusted through real-time perception of the environment and system operating status, thereby improving the flexibility of the wind shield function of the heat pump air-conditioning system.

[0120] above Figure 5 and Figure 6 The wind shield control device of the heat pump air conditioning system in the embodiment of the present invention is described in detail from the perspective of modular functional entity, and the wind shield control device of the heat pump air conditioning system in the embodiment of the present invention is described in detail from the perspective of hardware processing.

[0121] Figure 7 7 is a schematic diagram of the structure of a heat pump air conditioning system wind control device provided by an embodiment of the present invention. The heat pump air conditioning system wind control device 700 may have relatively large differences due to different configurations or performances, and may include one or more processors (central processing units, CPU) 710 (for example, one or more processors) and a memory 720, and one or more storage media 730 (for example, one or more mass storage devices) storing application programs 733 or data 732. Among them, the memory 720 and the storage medium 730 may be temporary storage or permanent storage. The program stored in the storage medium 730 may include one or more modules (not shown in the figure), and each module may include a series of computer-readable instructions in the heat pump air conditioning system wind control device 700. Furthermore, the processor 710 may be configured to communicate with the storage medium 730, and execute a series of computer-readable instructions in the storage medium 730 on the heat pump air conditioning system wind control device 700. When the computer-readable instructions are executed by the processor, the processor executes the steps of the heat pump air conditioning system wind control method in the above-mentioned embodiments.

[0122] The heat pump air conditioning system wind control device 700 may also include one or more power supplies 740, one or more wired or wireless network interfaces 750, one or more input and output interfaces 760, and / or one or more operating systems 731, such as Windows Serve, Mac OS X, Unix, Linux, FreeBSD, etc. Those skilled in the art will appreciate that Figure 7 The structure of the wind control device for a heat pump air conditioning system shown does not constitute a limitation on the wind control device for a heat pump air conditioning system, and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0123] The present invention also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium. Instructions are stored in the computer-readable storage medium. When the instructions are executed on a computer, the computer executes the steps of the heat pump air conditioning system wind control method.

[0124] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0125] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program codes.

[0126] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wind blocking control method for a heat pump air conditioning system, characterized in that: The windshield control method of the heat pump air conditioning system is performed by a windshield device of an outdoor heat exchanger, wherein the windshield device of the outdoor heat exchanger comprises an outer frame of the outdoor heat exchanger and a windshield assembly, wherein the windshield assembly is fixedly mounted on the outer frame, wherein the windshield assembly comprises a driving device and a windshield component, wherein the driving device is transmission-connected to the windshield component, and wherein the windshield control method of the heat pump air conditioning system comprises: In response to a power-on instruction, obtaining a user's set temperature, indoor ambient temperature, outdoor ambient temperature, and operating status parameters; Determine a working mode according to the set temperature and the indoor ambient temperature, the working mode being a cooling mode or a heating mode; When the working mode is a cooling mode, the wind shielding component is controlled according to the outdoor ambient temperature and the operating state parameter; When the working mode is the heating mode, judging whether to start the defrosting function according to the outdoor ambient temperature and the operating state parameters; If yes, controlling the wind shield assembly according to the outdoor ambient temperature and the operating state parameter; When the working mode is the heating mode, judging whether to start the defrosting function according to the outdoor ambient temperature and the operating state parameter includes: When the working mode is the heating mode, the operating state parameters are analyzed to obtain the coil temperature, evaporation temperature, return water temperature of the outdoor heat exchanger and the operating time of the heat pump air conditioning system; Calculate the difference between the outdoor environment temperature and the coil temperature to obtain the loop temperature difference; Calculating the difference between the outdoor ambient temperature and the evaporation temperature to obtain the ring evaporation temperature difference; Determine whether the running time is greater than or equal to a preset defrost time interval, and if so, determine whether the ring pipe temperature difference is greater than or equal to a preset defrost ring pipe temperature difference, or whether the ring evaporation temperature difference is greater than or equal to a preset defrost ring evaporation temperature difference; If yes, determining whether the evaporation temperature is less than or equal to a preset target defrost evaporation temperature; If so, it is determined whether the return water temperature is greater than the preset target defrost return water temperature, and if so, the defrost function is started.

2. The wind blocking control method of the heat pump air conditioning system according to claim 1, characterized in that: When the working mode is the cooling mode, controlling the wind shielding component according to the outdoor ambient temperature and the operating state parameter includes: Analyzing the operating state parameters to obtain the coil temperature of the outdoor heat exchanger; When the outdoor environment temperature and the coil temperature meet a first preset condition, generating a wind shield component opening instruction; When the outdoor ambient temperature and the coil temperature meet a second preset condition, a wind shield component closing instruction is generated.

3. The wind blocking control method of the heat pump air conditioning system according to claim 2, characterized in that: The step of generating a wind shield component opening instruction when the outdoor ambient temperature and the coil temperature meet a first preset condition comprises: Obtaining a preset target ambient temperature and a preset target coil temperature, wherein the target ambient temperature is the outdoor ambient temperature corresponding to when the wind shielding function is preset to be started in the heat pump air conditioning system, and the target coil temperature is the coil temperature corresponding to the outdoor heat exchanger when the wind shielding function is preset to be started in the heat pump air conditioning system; When the outdoor ambient temperature is lower than the preset target ambient temperature and the coil temperature is lower than the preset target coil temperature, a wind shield component opening instruction is generated.

4. The wind blocking control method of the heat pump air conditioning system according to claim 2, characterized in that: The step of generating a wind shield component closing instruction when the outdoor ambient temperature and the coil temperature meet a second preset condition comprises: Calculating the difference between the outdoor ambient temperature and the preset target ambient temperature to obtain a first ring temperature difference; Calculating the difference between the coil temperature and a preset target coil temperature to obtain a first coil temperature difference; When the first ring temperature difference is greater than a preset first threshold or the first coil temperature difference is greater than a preset second threshold, a wind shield component closing instruction is generated.

5. The wind blocking control method of the heat pump air conditioning system according to claim 1, characterized in that: If so, controlling the wind shield component according to the outdoor ambient temperature and the operating state parameter includes: When the defrost function is activated, the preset target ambient temperature is obtained; Calculating the difference between the outdoor ambient temperature and the preset target ambient temperature to obtain a second ring temperature difference; When the temperature difference of the second ring is less than zero, generating an instruction to open the wind shield component; When the second ring temperature difference is greater than a preset third threshold or a defrost end instruction is received, a wind shield assembly closing instruction is generated.

6. The wind shielding control method for a heat pump air conditioning system according to any one of claims 1 to 5, characterized in that: Also includes: In response to a windshield component opening instruction, obtaining a preset windshield component opening table; Determine the target opening corresponding to the windshield component according to the outdoor ambient temperature, the operating state parameter and the windshield component opening table; The opening degree of the wind shield assembly is adjusted according to the target opening degree.

7. A wind control device for a heat pump air conditioning system, characterized in that: The heat pump air conditioning system wind shield control device comprises: A first acquisition module, for acquiring a user's set temperature, indoor ambient temperature, outdoor ambient temperature and operating status parameters in response to a power-on instruction; A first determining module, configured to determine a working mode according to the set temperature and the indoor ambient temperature, wherein the working mode is a cooling mode or a heating mode; A first control module, used for controlling the wind shield component according to the outdoor ambient temperature and the operating state parameter when the working mode is a cooling mode; A second determination module is used to determine whether to start the defrosting function according to the outdoor ambient temperature and the operating state parameter when the working mode is the heating mode; a second control module, configured to control the wind shield assembly according to the outdoor ambient temperature and the operating state parameter; The second determination module is specifically used for: when the working mode is the heating mode, parsing the operating status parameters to obtain the coil temperature, evaporating temperature, return water temperature of the outdoor heat exchanger and the operating time of the heat pump air-conditioning system; calculating the difference between the outdoor ambient temperature and the coil temperature to obtain the ring temperature difference; calculating the difference between the outdoor ambient temperature and the evaporating temperature to obtain the ring-evaporation temperature difference; judging that the operating time is greater than or equal to the preset defrost time interval, if so, judging that the ring temperature difference is greater than or equal to the preset defrost ring temperature difference, or whether the ring-evaporation temperature difference is greater than or equal to the preset defrost ring temperature difference; if so, judging whether the evaporating temperature is less than or equal to the preset target defrost evaporation temperature; if so, judging whether the return water temperature is greater than the preset target defrost return water temperature, if so, starting the defrost function.

8. The wind shield control device for a heat pump air conditioning system according to claim 7, characterized in that: The first control module is specifically used for: a parsing unit, used to parse the operating state parameter to obtain the coil temperature of the outdoor heat exchanger; The starting unit is used to generate an opening instruction of the wind shield component when the outdoor ambient temperature and the coil temperature meet a first preset condition; the closing unit is used to generate a closing instruction of the wind shield component when the outdoor ambient temperature and the coil temperature meet a second preset condition.

9. A wind control device for a heat pump air conditioning system, characterized in that: The heat pump air conditioning system wind control device comprises: a memory and at least one processor, wherein the memory stores instructions; The at least one processor calls the instruction in the memory so that the heat pump air conditioning system windshield control device executes the heat pump air conditioning system windshield control method according to any one of claims 1-6.

10. A computer-readable storage medium having instructions stored thereon, characterized in that: When the instruction is read and executed, the wind shield control method of the heat pump air conditioning system as described in any one of claims 1-6 is executed.

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