Control method, device, medium and system for heat pump air conditioner

Abstract

The invention provides a control method, device, medium and system for a heat pump air conditioner. According to the method, the frosting condition of an outdoor unit heat exchanger is judged by comparing the difference value between the second indoor air outlet temperature and the first indoor air outlet temperature and the difference value between the second outdoor motor temperature and the first outdoor motor temperature, the rotating speed of an outdoor fan blade motor is adjusted, or the frequency of a compressor of the heat pump air conditioner is adjusted, so that the defrosting frequency is reduced, and the defrosting efficiency is improved. Therefore, compared with an existing scheme, the heating duration can be prolonged, the frosting amount of the outdoor unit heat exchanger is delayed, the heating duration is prolonged, the heating comfort of a user is improved, the defrosting frequency is reduced, and the user experience is improved. Therefore, the problem that in the prior art, a technical scheme for improving the heating comfort degree of a user by reducing the defrosting frequency of the heat pump air conditioner is lacked is solved.

Description

Technical Field

[0001] The present application relates to the technical field of heat pump air conditioners, and in particular to a control method, device, medium and system for heat pump air conditioners. Background Art

[0002] When a heat pump air conditioner is used under low temperature and high humidity conditions, after running for a period of time, the outdoor heat exchanger will be frosted, which increases the thermal resistance and wind resistance of the heat exchanger, is not conducive to heat exchange, and makes the performance of the air conditioner worse. In order to make the air conditioner operate normally, when the amount of frost reaches a certain level, the air conditioner needs to be defrosted. The main defrosting method of existing air conditioners is to switch the four-way valve and perform a refrigeration cycle. In this method, during the defrosting process, the indoor fan is stopped and cannot provide heat to the room. At the same time, due to the low temperature of the refrigerant flowing through the indoor heat exchanger, it will also absorb heat from the room, lowering the room temperature, and also reducing the comfort of the room.

[0003] That is, the prior art lacks a technical solution for improving the heating comfort of users by reducing the number of defrosting times of the heat pump air conditioner. Summary of the invention

[0004] The main purpose of the present application is to provide a control method, device, medium and system for a heat pump air conditioner, so as to at least solve the problem that the prior art lacks a technical solution for improving the heating comfort of users by reducing the number of defrosting times of the heat pump air conditioner.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a control method for a heat pump air conditioner is provided, the method comprising: obtaining a first indoor outlet air temperature and a first outdoor motor temperature, the first indoor outlet air temperature and the first outdoor motor temperature being the outlet air temperature of the indoor unit of the heat pump air conditioner at a first preset moment and the motor temperature of the outdoor fan blade motor of the heat pump air conditioner, respectively; obtaining a second indoor outlet air temperature and a second outdoor motor temperature, the second indoor outlet air temperature and the second outdoor motor temperature being the outlet air temperature of the indoor unit at a second preset moment and the motor temperature of the outdoor fan blade motor, respectively, the time from the start time of the indoor unit startup to the first preset moment being less than the time from the start time of the indoor unit startup to the second preset moment; adjusting the speed of the outdoor fan blade motor or adjusting the frequency of the compressor of the heat pump air conditioner according to the size of the first difference and the second difference to reduce the number of defrosting times, the first difference being the difference between the second indoor outlet air temperature and the first indoor outlet air temperature, and the second difference being the difference between the second outdoor motor temperature and the first outdoor motor temperature.

[0006] Optionally, the speed of the outdoor fan blade motor is adjusted, or the frequency of the compressor of the heat pump air conditioner is adjusted according to the size of the first difference and the second difference, including: when the first difference is less than the outlet air temperature threshold and the second difference is greater than the motor temperature threshold, the outlet air temperature of the indoor unit at the current moment is obtained in real time to obtain a third indoor outlet air temperature, and the speed of the outdoor fan blade motor is adjusted according to the third indoor outlet air temperature, or the frequency of the compressor of the heat pump air conditioner is adjusted; when the first difference is greater than or equal to the outlet air temperature threshold, and / or the second difference is less than or equal to the motor temperature threshold, the speed of the outdoor fan blade motor and the frequency of the compressor of the heat pump air conditioner are kept unchanged.

[0007] Optionally, the method further includes: acquiring a current inner ring temperature and a current outer ring temperature; and determining the air outlet temperature threshold and the motor temperature threshold corresponding to the current inner ring temperature and the current outer ring temperature.

[0008] Optionally, the speed of the outdoor fan blade motor is adjusted according to the third indoor air outlet temperature, or the frequency of the compressor of the heat pump air conditioner is adjusted, including: determining a target speed adjustment value as a speed adjustment value corresponding to the third indoor air outlet temperature; and adjusting the speed of the outdoor fan blade motor to the difference between the current speed and the target speed adjustment value; determining a target frequency adjustment value as a frequency adjustment value corresponding to the third indoor air outlet temperature; and adjusting the frequency of the compressor to the difference between the current frequency and the target frequency adjustment value.

[0009] Optionally, after adjusting the speed of the outdoor fan blade motor to the difference between the current speed and the target speed adjustment value, the method also includes: obtaining the outlet air temperature of the indoor unit at the current moment in real time after the heat pump air conditioner has run for a first preset time, obtaining a fourth indoor outlet air temperature, and increasing the frequency of the compressor according to the size of the fourth indoor outlet air temperature, or keeping the frequency of the compressor unchanged.

[0010] Optionally, after increasing the frequency of the compressor according to the size of the fourth indoor air outlet temperature, or keeping the frequency of the compressor unchanged, the method also includes: executing a first adjustment step once every first preset time period, the first adjustment step including determining the target frequency adjustment value as a frequency adjustment value corresponding to the air outlet temperature of the indoor unit at the current moment; and adjusting the frequency of the compressor to the difference between the current frequency and the target frequency adjustment value.

[0011] Optionally, after keeping the rotational speed of the outdoor fan blade motor and the frequency of the compressor of the heat pump air conditioner unchanged, the method further includes: executing a second adjustment step once every second preset time period, and the second adjustment step includes adjusting the rotational speed of the outdoor fan blade motor or adjusting the frequency of the compressor of the heat pump air conditioner according to the size of the first difference and the second difference.

[0012] According to another aspect of the present application, a control device for a heat pump air conditioner is provided, the device comprising: a first acquisition unit, used to acquire a first indoor outlet air temperature and a first outdoor motor temperature, the first indoor outlet air temperature and the first outdoor motor temperature are respectively the outlet air temperature of the indoor unit of the heat pump air conditioner at a first preset moment and the motor temperature of the outdoor fan blade motor of the heat pump air conditioner; a second acquisition unit, used to acquire a second indoor outlet air temperature and a second outdoor motor temperature, the second indoor outlet air temperature and the second outdoor motor temperature are respectively the outlet air temperature of the indoor unit at a second preset moment and the motor temperature of the outdoor fan blade motor, the time from the start time of the indoor unit startup to the first preset moment is less than the time from the start time of the indoor unit startup to the second preset moment; a first processing unit, used to adjust the speed of the outdoor fan blade motor or the frequency of the compressor of the heat pump air conditioner according to the size of the first difference and the second difference, so as to reduce the number of defrosting times, the first difference being the difference between the second indoor outlet air temperature and the first indoor outlet air temperature, and the second difference being the difference between the second outdoor motor temperature and the first outdoor motor temperature.

[0013] According to another aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute any one of the methods described.

[0014] According to another aspect of the present application, a control system for a heat pump air conditioner is provided, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include methods for executing any one of the described methods.

[0015] By applying the technical solution of the present application, the frost condition of the outdoor heat exchanger is judged by comparing the difference between the second indoor air outlet temperature and the first indoor air outlet temperature and the difference between the second outdoor motor temperature and the first outdoor motor temperature, and the rotation speed of the outdoor fan blade motor is adjusted, or the frequency of the compressor of the heat pump air conditioner is adjusted to reduce the number of defrosting times. Compared with the existing solutions, the heating time can be extended, thereby delaying the frost amount of the outdoor heat exchanger, extending the heating time, improving the heating comfort of the user, and reducing the number of defrosting times, thereby solving the problem that the existing technology lacks a technical solution to improve the heating comfort of the user by reducing the number of defrosting times of the heat pump air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 A schematic flow chart of a control method for a heat pump air conditioner provided according to an embodiment of the present application is shown;

[0018] Figure 2 A schematic flow chart of another method for controlling a heat pump air conditioner according to an embodiment of the present application is shown;

[0019] Figure 3 A structural block diagram of a control device for a heat pump air conditioner provided according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0023] As introduced in the background technology, when a heat pump air conditioner is used under low temperature and high humidity conditions, after running for a period of time, the outdoor heat exchanger will frost, which increases the thermal resistance and wind resistance of the heat exchanger, is not conducive to heat exchange, and makes the performance of the air conditioner worse. In order to make the air conditioner operate normally, when the frost reaches a certain level, the air conditioner needs to be defrosted. The main defrosting method of existing air conditioners is to switch the four-way valve to perform a refrigeration cycle. In this method, during the defrosting process, the indoor fan is stopped and cannot provide heat to the room. At the same time, since the temperature of the refrigerant flowing through the indoor heat exchanger is relatively low, it will also absorb heat from the room, lowering the room temperature and also reducing the comfort of the room. In order to solve the problem that the prior art lacks a technical solution to improve the user's heating comfort by reducing the number of defrosting times of the heat pump air conditioner, the embodiments of the present application provide a control method, device, medium and system for a heat pump air conditioner.

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] In this embodiment, a control method for a heat pump air conditioner is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0026] Figure 1 FIG. 1 is a flow chart of a control method for a heat pump air conditioner provided according to an embodiment of the present application. Figure 1 As shown, the method comprises the following steps:

[0027] Step S101, obtaining a first indoor air outlet temperature and a first outdoor motor temperature, wherein the first indoor air outlet temperature and the first outdoor motor temperature are respectively the air outlet temperature of the indoor unit of the heat pump air conditioner at a first preset time and the motor temperature of the outdoor fan motor of the heat pump air conditioner;

[0028] Specifically, when the power-on time is 20-30 minutes (i.e., the timing starts from when the heat pump air conditioner is turned on), the air outlet temperature of the indoor unit and the motor temperature of the outdoor fan motor of the heat pump air conditioner are obtained at the first preset time of the indoor unit of the heat pump air conditioner;

[0029] When the startup time is 50-60 minutes, that is, at the second preset time of the indoor unit of the heat pump air conditioner, the air outlet temperature of the indoor unit and the motor temperature of the outdoor fan blade motor of the heat pump air conditioner are obtained.

[0030] Step S102, obtaining a second indoor air outlet temperature and a second outdoor motor temperature, wherein the second indoor air outlet temperature and the second outdoor motor temperature are respectively the air outlet temperature of the indoor unit at the second preset moment and the motor temperature of the outdoor fan blade motor, and the time from the start moment of the indoor unit startup to the first preset moment is less than the time from the start moment of the indoor unit startup to the second preset moment;

[0031] Specifically, the first difference and the second difference are calculated, and the frosting condition of the outdoor heat exchanger is subsequently determined by comparing the first difference and the second difference, and the rotation speed of the outdoor fan blade motor is adjusted, or the frequency of the compressor of the heat pump air conditioner is adjusted to reduce the number of defrosting times, thereby extending the heating time compared to the existing scheme, thereby delaying the amount of frost on the outdoor heat exchanger, extending the heating time, and improving the heating comfort of the user.

[0032] Step S103, according to the size of the first difference and the second difference, adjust the speed of the above-mentioned outdoor fan blade motor, or adjust the frequency of the compressor of the above-mentioned heat pump air conditioner to reduce the number of defrosting times, the above-mentioned first difference is the difference between the above-mentioned second indoor air outlet temperature and the above-mentioned first indoor air outlet temperature, and the above-mentioned second difference is the difference between the above-mentioned second outdoor motor temperature and the above-mentioned first outdoor motor temperature.

[0033] In the above steps, the frost condition of the outdoor heat exchanger is judged by comparing the difference between the second indoor air outlet temperature and the first indoor air outlet temperature and the difference between the second outdoor motor temperature and the first outdoor motor temperature, and the rotation speed of the outdoor fan blade motor is adjusted, or the frequency of the compressor of the heat pump air conditioner is adjusted to reduce the number of defrosting times, thereby extending the heating time compared with the existing scheme, thereby delaying the frost amount of the outdoor heat exchanger, extending the heating time, improving the user's heating comfort, and reducing the number of defrosting times, thereby solving the problem that the existing technology lacks a technical solution to improve the user's heating comfort by reducing the number of defrosting times of the heat pump air conditioner.

[0034] In one embodiment of the present application, adjusting the speed of the outdoor fan motor or adjusting the frequency of the compressor of the heat pump air conditioner according to the first difference and the second difference includes:

[0035] When the first difference is less than the outlet air temperature threshold and the second difference is greater than the motor temperature threshold, the outlet air temperature of the indoor unit at the current moment is obtained in real time to obtain a third indoor outlet air temperature, and the rotation speed of the outdoor fan motor is adjusted according to the third indoor outlet air temperature, or the frequency of the compressor of the heat pump air conditioner is adjusted;

[0036] When the first difference is greater than or equal to the air outlet temperature threshold, and / or the second difference is less than or equal to the motor temperature threshold, the rotation speed of the outdoor fan motor and the frequency of the compressor of the heat pump air conditioner are kept unchanged.

[0037] Wherein, after keeping the rotation speed of the outdoor fan blade motor and the frequency of the compressor of the heat pump air conditioner unchanged, the method further includes: performing a second adjustment step once every second preset time, wherein the second adjustment step includes adjusting the rotation speed of the outdoor fan blade motor or adjusting the frequency of the compressor of the heat pump air conditioner according to the magnitude of the first difference and the second difference. By continuing to adjust the frequency of the compressor downward, the evaporation temperature of the outdoor heat exchanger is increased, thereby reducing the heat absorbed from the outside by the outdoor heat exchanger, delaying the amount of frost on the outdoor heat exchanger, and extending the heating time.

[0038] Specifically, when the first difference is greater than or equal to the outlet air temperature threshold, and / or the second difference is less than or equal to the motor temperature threshold, it is determined that the frosting condition of the outdoor heat exchanger is not frosted, so the rotation speed of the outdoor fan motor and the frequency of the compressor of the heat pump air conditioner are kept unchanged;

[0039] When the above-mentioned first difference is less than the outlet air temperature threshold and the above-mentioned second difference is greater than the motor temperature threshold, it is determined that the outdoor unit heat exchanger is frosted, and it is necessary to adjust the speed of the above-mentioned outdoor fan blade motor, or adjust the frequency of the compressor of the above-mentioned heat pump air conditioner. It is adjusted every 10 minutes to prevent the degree of frost from worsening. In each adjustment process, the currently obtained indoor outlet air temperature and outdoor motor temperature are used to match the corresponding first indoor outlet air temperature and first outdoor motor temperature (that is, the latter of the indoor outlet air temperature is subtracted from the former, and the latter of the outdoor motor temperature is subtracted from the former. According to these two differences, the adjustment control is performed in the same way as step S103, which will not be repeated here).

[0040] In one embodiment of the present application, the above method further includes:

[0041] Get the current inner ring temperature and the current outer ring temperature;

[0042] Determine the above-mentioned outlet temperature threshold and the above-mentioned motor temperature threshold corresponding to the above-mentioned current inner ring temperature and the above-mentioned current outer ring temperature.

[0043] Specifically, by setting the mapping relationship among the inner ring temperature, the outer ring temperature, the outlet temperature threshold, and the motor temperature threshold, the values ​​of the outlet temperature threshold and the motor temperature threshold are made more consistent with the actual working conditions.

[0044] In one embodiment of the present application, adjusting the speed of the outdoor fan motor or adjusting the frequency of the compressor of the heat pump air conditioner according to the third indoor air outlet temperature includes:

[0045] Determine the target speed adjustment value as the speed adjustment value corresponding to the third indoor air outlet temperature; and adjust the speed of the outdoor fan motor to the difference between the current speed and the target speed adjustment value;

[0046] Determine a target frequency adjustment value as a frequency adjustment value corresponding to the third indoor air outlet temperature; and adjust the frequency of the compressor to the difference between the current frequency and the target frequency adjustment value.

[0047] Specifically, the best adjustment method is to first adjust the speed of the outdoor fan blade motor, run it at this speed for 10-20 minutes, and then adjust the frequency of the compressor. The adjustment methods are based on.

[0048] The correspondence between indoor air outlet temperature and indoor fan speed is shown in Table 1, and the correspondence between indoor air outlet temperature and compressor frequency is shown in Table 2.

[0049] Table 1

[0050]

[0051] T 出风1 is the first indoor air outlet temperature, T 出风2 is the second indoor air outlet temperature; R 内转 Indicates the current speed of the indoor fan. 内转1 , R 内转2 , R 内转3 is the preset indoor fan speed value, and R 内转1 <R 内转2 <R 内转3 , and the range of the three values ​​is 20-50rpm. In order to ensure the indoor heating effect, the indoor fan speed is adjusted according to the outlet air temperature. The high indoor outlet air temperature indicates that the amount of frost on the outdoor heat exchanger is less than that on the indoor outlet air temperature, and the indoor fan speed does not need to be reduced much at this time; at the same time, the indoor fan speed is adjusted to different degrees according to different indoor outlet air temperatures, so as to reduce the heat exchange of the indoor heat exchanger, increase the evaporation temperature of the outdoor heat exchanger, and then reduce the heat inhaled from the outside by the outdoor heat exchanger, delay the amount of frost on the outdoor heat exchanger, and extend the heating time.

[0052] Table 2

[0053]

[0054]

[0055] F represents the current compressor operating frequency, F 1 、F 2 、F 3 is the preset compressor frequency value, and F 1 <F 2 <F 3 , and the range of the three values ​​is 5-10Hz. In order to ensure the indoor heating effect, the compressor frequency is adjusted according to the outlet air temperature. If the indoor outlet air temperature is high, the compressor frequency can be reduced more; at the same time, the compressor frequency is adjusted to different degrees according to different indoor outlet air temperatures, so as to increase the evaporation temperature of the outdoor heat exchanger, thereby reducing the heat absorbed from the outside by the outdoor heat exchanger, delaying the frost of the outdoor heat exchanger, and extending the heating time, T 出风3 and T 出风4 It is a preset temperature value. When the air outlet temperature is within a different preset temperature range, the compressor frequency is adjusted. The specific value can be determined according to the working time of the heat pump air conditioner.

[0056] In one embodiment of the present application, after adjusting the speed of the outdoor fan blade motor to the difference between the current speed and the target speed adjustment value, the method further includes:

[0057] After the heat pump air conditioner runs for a first preset time, the air outlet temperature of the indoor unit at the current moment is obtained in real time to obtain a fourth indoor air outlet temperature, and according to the size of the fourth indoor air outlet temperature, the frequency of the compressor is increased or kept unchanged.

[0058] When the fourth indoor air outlet temperature is the same as the temperature at the adjacent time, or lower than the temperature at the adjacent time, the frequency of the compressor is increased; when the fourth indoor air outlet temperature is higher than the temperature at the adjacent time, the frequency of the compressor is kept unchanged.

[0059] By adjusting the indoor fan speed and compressor frequency, the evaporation temperature of the outdoor heat exchanger is increased, thereby reducing the heat absorbed by the outdoor heat exchanger from the outside, delaying the frost on the outdoor heat exchanger, extending the heating time, and improving the user's heating comfort.

[0060] Specifically, the frequency of the compressor may be increased by 12 Hz.

[0061] In one embodiment of the present application, after increasing the frequency of the compressor according to the fourth indoor air outlet temperature, or keeping the frequency of the compressor unchanged, the method further includes:

[0062] The first adjustment step is executed once every time the above-mentioned first preset time period has passed. The above-mentioned first adjustment step includes determining the above-mentioned target frequency adjustment value as the frequency adjustment value corresponding to the air outlet temperature of the above-mentioned indoor unit at the current moment; and adjusting the frequency of the above-mentioned compressor to the difference between the current frequency and the above-mentioned target frequency adjustment value.

[0063] Specifically, the evaporation temperature of the outdoor heat exchanger is increased by continuing to adjust the frequency of the compressor downward, thereby reducing the heat absorbed by the outdoor heat exchanger from the outside, delaying the frost on the outdoor heat exchanger, and extending the heating time.

[0064] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the implementation process of the control method of the heat pump air conditioner of the present application will be described in detail below in combination with specific embodiments.

[0065] This embodiment relates to a specific control method for a heat pump air conditioner. Figure 2 As shown, the following steps are included:

[0066] Obtaining a first indoor air outlet temperature and a first outdoor motor temperature, where the first indoor air outlet temperature and the first outdoor motor temperature are respectively the air outlet temperature of the indoor unit of the heat pump air conditioner at a first preset time and the motor temperature of the outdoor fan motor of the heat pump air conditioner;

[0067] Obtain a second indoor air outlet temperature and a second outdoor motor temperature, the second indoor air outlet temperature and the second outdoor motor temperature are respectively the air outlet temperature of the indoor unit at a second preset moment and the motor temperature of the outdoor fan blade motor, and the time from the start time of the indoor unit startup to the first preset moment is less than the time from the start time of the indoor unit startup to the second preset moment;

[0068] When the first difference is greater than or equal to the outlet air temperature threshold, and / or the second difference is less than or equal to the motor temperature threshold, the rotation speed of the outdoor fan blade motor and the frequency of the compressor of the heat pump air conditioner are kept unchanged, and the second adjustment step is performed once every second preset time (i.e., 10 minutes), and the second adjustment step includes adjusting the rotation speed of the outdoor fan blade motor or adjusting the frequency of the compressor of the heat pump air conditioner according to the size of the first difference and the second difference; the first difference is the difference between the second indoor outlet air temperature and the first indoor outlet air temperature, and the second difference is the difference between the second outdoor motor temperature and the first outdoor motor temperature;

[0069] When the first difference is less than the outlet air temperature threshold and the second difference is greater than the motor temperature threshold, the outlet air temperature of the indoor unit at the current moment is acquired in real time to obtain a third indoor outlet air temperature;

[0070] Determine the target speed adjustment value as the speed adjustment value corresponding to the third indoor air outlet temperature; and adjust the speed of the outdoor fan motor to the difference between the current speed and the target speed adjustment value, and run for 10 minutes;

[0071] The outlet air temperature of the indoor unit at the current moment is obtained in real time to obtain the fifth indoor outlet air temperature, and the target frequency adjustment value is determined to be the frequency adjustment value corresponding to the fifth indoor outlet air temperature; and the frequency of the compressor is adjusted to the difference between the current frequency and the target frequency adjustment value.

[0072] After the speed of the outdoor fan motor is adjusted to the difference between the current speed and the target speed adjustment value, the outlet air temperature of the indoor unit at the current moment is obtained in real time after the heat pump air conditioner runs for a first preset time (i.e., 10 minutes), and a fourth indoor outlet air temperature is obtained, and according to the fourth indoor outlet air temperature, the frequency of the compressor is increased, or the frequency of the compressor is kept unchanged;

[0073] After increasing the frequency of the compressor according to the size of the fourth indoor air outlet temperature, or keeping the frequency of the compressor unchanged, the first adjustment step is executed once every first preset time (i.e. 10 minutes). The first adjustment step includes determining a target frequency adjustment value as a frequency adjustment value corresponding to the air outlet temperature of the indoor unit at the current moment; and adjusting the frequency of the compressor to the difference between the current frequency and the target frequency adjustment value.

[0074] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0075] The embodiment of the present application also provides a control device for a heat pump air conditioner. It should be noted that the control device for a heat pump air conditioner in the embodiment of the present application can be used to execute the control method for a heat pump air conditioner provided in the embodiment of the present application. The device is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware for a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0076] The following is an introduction to the control device of the heat pump air conditioner provided in the embodiment of the present application.

[0077] Figure 3is a structural block diagram of a control device for a heat pump air conditioner provided according to an embodiment of the present application. Figure 3 As shown, the device comprises:

[0078] A first acquisition unit 31 is used to acquire a first indoor air outlet temperature and a first outdoor motor temperature, wherein the first indoor air outlet temperature and the first outdoor motor temperature are respectively the air outlet temperature of the indoor unit of the heat pump air conditioner at a first preset time and the motor temperature of the outdoor fan motor of the heat pump air conditioner;

[0079] A second acquisition unit 32 is used to acquire a second indoor air outlet temperature and a second outdoor motor temperature, wherein the second indoor air outlet temperature and the second outdoor motor temperature are respectively the air outlet temperature of the indoor unit at a second preset time and the motor temperature of the outdoor fan blade motor, and the time from the start time of the indoor unit startup to the first preset time is less than the time from the start time of the indoor unit startup to the second preset time;

[0080] The first processing unit 33 is used to adjust the rotation speed of the above-mentioned outdoor fan blade motor, or adjust the frequency of the compressor of the above-mentioned heat pump air conditioner according to the size of the first difference and the second difference, so as to reduce the number of defrosting times. The above-mentioned first difference is the difference between the above-mentioned second indoor air outlet temperature and the above-mentioned first indoor air outlet temperature, and the above-mentioned second difference is the difference between the above-mentioned second outdoor motor temperature and the above-mentioned first outdoor motor temperature.

[0081] In the above-mentioned device, the frost condition of the outdoor heat exchanger is judged by comparing the difference between the above-mentioned second indoor air outlet temperature and the above-mentioned first indoor air outlet temperature and the difference between the above-mentioned second outdoor motor temperature and the above-mentioned first outdoor motor temperature, and the rotation speed of the above-mentioned outdoor fan blade motor is adjusted, or the frequency of the compressor of the above-mentioned heat pump air conditioner is adjusted to reduce the number of defrosting times, thereby extending the heating time more than the existing scheme, thereby delaying the frost amount of the outdoor heat exchanger, extending the heating time, improving the user's heating comfort, and reducing the number of defrosting times, thereby solving the problem that the existing technology lacks a technical solution to improve the user's heating comfort by reducing the number of defrosting times of the heat pump air conditioner.

[0082] In one embodiment of the present application, the first processing unit includes a first processing module and a second processing module. The first processing module is used to obtain the outlet air temperature of the indoor unit at the current moment in real time when the first difference is less than the outlet air temperature threshold and the second difference is greater than the motor temperature threshold, obtain the third indoor outlet air temperature, and adjust the speed of the outdoor fan blade motor or the frequency of the compressor of the heat pump air conditioner according to the third indoor outlet air temperature; the second processing module is used to keep the speed of the outdoor fan blade motor and the frequency of the compressor of the heat pump air conditioner unchanged when the first difference is greater than or equal to the outlet air temperature threshold and / or the second difference is less than or equal to the motor temperature threshold.

[0083] In one embodiment of the present application, the above-mentioned device also includes a third acquisition unit and a second processing unit; the third acquisition unit is used to obtain the current inner ring temperature and the current outer ring temperature; the second processing unit is used to determine the above-mentioned outlet temperature threshold and the above-mentioned motor temperature threshold corresponding to the above-mentioned current inner ring temperature and the above-mentioned current outer ring temperature.

[0084] In one embodiment of the present application, the first processing module includes a first determination submodule and a second determination submodule, the first determination submodule is used to determine the target speed adjustment value as the speed adjustment value corresponding to the above-mentioned third indoor air outlet temperature; and adjust the speed of the above-mentioned outdoor fan blade motor to the difference between the current speed and the above-mentioned target speed adjustment value; the second determination submodule is used to determine the target frequency adjustment value as the frequency adjustment value corresponding to the above-mentioned third indoor air outlet temperature; and adjust the frequency of the above-mentioned compressor to the difference between the current frequency and the above-mentioned target frequency adjustment value.

[0085] In one embodiment of the present application, the first processing module includes a first processing sub-module. After the speed of the outdoor fan blade motor is adjusted to the difference between the current speed and the target speed adjustment value, the first processing sub-module is used to obtain the outlet air temperature of the indoor unit at the current moment in real time after the heat pump air conditioner runs for a first preset time, obtain a fourth indoor outlet air temperature, and increase the frequency of the compressor according to the size of the fourth indoor outlet air temperature, or keep the frequency of the compressor unchanged.

[0086] In one embodiment of the present application, the first processing module includes a second processing sub-module. After increasing the frequency of the compressor or keeping the frequency of the compressor unchanged according to the size of the fourth indoor air outlet temperature, the second processing sub-module is used to execute a first adjustment step once every first preset time period. The first adjustment step includes determining the target frequency adjustment value as a frequency adjustment value corresponding to the air outlet temperature of the indoor unit at the current moment; and adjusting the frequency of the compressor to the difference between the current frequency and the target frequency adjustment value.

[0087] In one embodiment of the present application, the first processing unit includes a third processing module. After keeping the rotation speed of the outdoor fan blade motor and the frequency of the compressor of the heat pump air conditioner unchanged, the third processing module is used to execute a second adjustment step once every second preset time period. The second adjustment step includes adjusting the rotation speed of the outdoor fan blade motor or adjusting the frequency of the compressor of the heat pump air conditioner according to the size of the first difference and the second difference.

[0088] The control device of the heat pump air conditioner includes a processor and a memory. The first acquisition unit, the second acquisition unit and the first processing unit are stored in the memory as program units, and the processor executes the program units stored in the memory to implement corresponding functions. The modules are all located in the same processor; or, the modules are located in different processors in any combination.

[0089] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be set, and the problem that the prior art lacks a technical solution to improve the heating comfort of users by reducing the number of defrosting times of heat pump air conditioners is solved by adjusting kernel parameters.

[0090] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0091] An embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the control method of the heat pump air conditioner.

[0092] An embodiment of the present invention provides a processor, and the processor is used to run a program, wherein the control method of the heat pump air conditioner is executed when the program is run.

[0093] An embodiment of the present invention provides a device, which includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, at least the following steps are implemented: obtaining a first indoor air outlet temperature and a first outdoor motor temperature, wherein the first indoor air outlet temperature and the first outdoor motor temperature are respectively the air outlet temperature of the indoor unit of the heat pump air conditioner at a first preset time and the motor temperature of the outdoor fan blade motor of the heat pump air conditioner; obtaining a second indoor air outlet temperature and a second outdoor motor temperature, wherein the second indoor air outlet temperature and the second outdoor motor temperature are respectively the air outlet temperature of the indoor unit at a second preset time and the motor temperature of the outdoor fan blade motor, wherein the time from the start time of the indoor unit startup to the first preset time is less than the time from the start time of the indoor unit startup to the second preset time; adjusting the rotation speed of the outdoor fan blade motor or adjusting the frequency of the compressor of the heat pump air conditioner according to the size of the first difference and the second difference, so as to reduce the number of defrosting times, wherein the first difference is the difference between the second indoor air outlet temperature and the first indoor air outlet temperature, and the second difference is the difference between the second outdoor motor temperature and the first outdoor motor temperature. The devices in this article can be servers, PCs, PADs, mobile phones, etc.

[0094] The present application also provides a computer program product, which, when executed on a data processing device, is suitable for executing a program that is initialized with at least the following method steps: obtaining a first indoor outlet air temperature and a first outdoor motor temperature, the first indoor outlet air temperature and the first outdoor motor temperature are respectively the outlet air temperature of the indoor unit of the heat pump air conditioner at a first preset moment and the motor temperature of the outdoor fan blade motor of the heat pump air conditioner; obtaining a second indoor outlet air temperature and a second outdoor motor temperature, the second indoor outlet air temperature and the second outdoor motor temperature are respectively the outlet air temperature of the indoor unit at a second preset moment and the motor temperature of the outdoor fan blade motor, the time from the start time of the indoor unit startup to the first preset moment is less than the time from the start time of the indoor unit startup to the second preset moment; adjusting the rotation speed of the outdoor fan blade motor or adjusting the frequency of the compressor of the heat pump air conditioner according to the size of the first difference and the second difference, so as to reduce the number of defrosting times, the first difference being the difference between the second indoor outlet air temperature and the first indoor outlet air temperature, and the second difference being the difference between the second outdoor motor temperature and the first outdoor motor temperature.

[0095] The present application also provides a control system for a heat pump air conditioner, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include methods for executing any of the above methods. The frost condition of the outdoor heat exchanger is judged by comparing the difference between the second indoor air outlet temperature and the first indoor air outlet temperature and the difference between the second outdoor motor temperature and the first outdoor motor temperature, and the speed of the outdoor fan motor is adjusted, or the frequency of the compressor of the heat pump air conditioner is adjusted to reduce the number of defrosting times, thereby being able to extend the heating time longer than the existing solution, thereby delaying the amount of frost on the outdoor heat exchanger, extending the heating time, improving the heating comfort of the user, and reducing the number of defrosting times, thereby solving the problem that the existing technology lacks a technical solution for improving the heating comfort of the user by reducing the number of defrosting times of the heat pump air conditioner.

[0096] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0097] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0098] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0099] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0100] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0101] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0102] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0103] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0104] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0105] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0106] 1) The control method of the heat pump air conditioner of the present application determines the frosting condition of the outdoor heat exchanger by comparing the difference between the second indoor air outlet temperature and the first indoor air outlet temperature and the difference between the second outdoor motor temperature and the first outdoor motor temperature, and adjusts the rotation speed of the outdoor fan blade motor, or adjusts the frequency of the compressor of the heat pump air conditioner to reduce the number of defrosting times, thereby extending the heating time compared with the existing scheme, thereby delaying the frosting amount of the outdoor heat exchanger, extending the heating time, improving the heating comfort of the user, and reducing the number of defrosting times, thereby solving the problem that the prior art lacks a technical solution to improve the heating comfort of the user by reducing the number of defrosting times of the heat pump air conditioner.

[0107] 2) The control device of the heat pump air conditioner of the present application determines the frosting condition of the outdoor heat exchanger by comparing the difference between the second indoor air outlet temperature and the first indoor air outlet temperature and the difference between the second outdoor motor temperature and the first outdoor motor temperature, and adjusts the rotation speed of the outdoor fan blade motor, or adjusts the frequency of the compressor of the heat pump air conditioner to reduce the number of defrosting times, thereby extending the heating time compared with the existing scheme, thereby delaying the frosting amount of the outdoor heat exchanger, extending the heating time, improving the user's heating comfort, and reducing the number of defrosting times, thereby solving the problem that the prior art lacks a technical solution to improve the user's heating comfort by reducing the number of defrosting times of the heat pump air conditioner.

[0108] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A control method for a heat pump air conditioner, characterized in that: include: Acquire a first indoor air outlet temperature and a first outdoor motor temperature, wherein the first indoor air outlet temperature and the first outdoor motor temperature are respectively the air outlet temperature of the indoor unit of the heat pump air conditioner at a first preset time and the motor temperature of the outdoor fan motor of the heat pump air conditioner; Acquire a second indoor air outlet temperature and a second outdoor motor temperature, wherein the second indoor air outlet temperature and the second outdoor motor temperature are respectively the air outlet temperature of the indoor unit at a second preset time and the motor temperature of the outdoor fan blade motor, and the time from the start time of powering on the indoor unit to the first preset time is less than the time from the start time of powering on the indoor unit to the second preset time; According to the size of the first difference and the second difference, the speed of the outdoor fan blade motor is adjusted, or the frequency of the compressor of the heat pump air conditioner is adjusted to reduce the number of defrosting times, the first difference is the difference between the second indoor air outlet temperature and the first indoor air outlet temperature, and the second difference is the difference between the second outdoor motor temperature and the first outdoor motor temperature.

2. The method according to claim 1, characterized in that According to the magnitude of the first difference and the second difference, adjusting the rotation speed of the outdoor fan motor, or adjusting the frequency of the compressor of the heat pump air conditioner, comprises: When the first difference is less than the outlet air temperature threshold and the second difference is greater than the motor temperature threshold, the outlet air temperature of the indoor unit at the current moment is acquired in real time to obtain a third indoor outlet air temperature, and the rotation speed of the outdoor fan motor is adjusted according to the third indoor outlet air temperature, or the frequency of the compressor of the heat pump air conditioner is adjusted; When the first difference is greater than or equal to the air outlet temperature threshold, and / or the second difference is less than or equal to the motor temperature threshold, the rotation speed of the outdoor fan blade motor and the frequency of the compressor of the heat pump air conditioner are kept unchanged.

3. The method according to claim 2, characterized in that The method further comprises: Get the current inner ring temperature and the current outer ring temperature; The air outlet temperature threshold and the motor temperature threshold corresponding to the current inner ring temperature and the current outer ring temperature are determined.

4. The method according to claim 2, characterized in that: Adjusting the rotation speed of the outdoor fan motor according to the third indoor air outlet temperature, or adjusting the frequency of the compressor of the heat pump air conditioner, includes: Determine a target speed adjustment value as a speed adjustment value corresponding to the third indoor air outlet temperature; and adjust the speed of the outdoor fan motor to the difference between the current speed and the target speed adjustment value; Determine a target frequency adjustment value as a frequency adjustment value corresponding to the third indoor air outlet temperature; and adjust the frequency of the compressor to a difference between the current frequency and the target frequency adjustment value.

5. The method according to claim 4, characterized in that After adjusting the rotation speed of the outdoor fan blade motor to the difference between the current rotation speed and the target rotation speed adjustment value, the method further includes: After the heat pump air conditioner runs for a first preset time, the air outlet temperature of the indoor unit at the current moment is obtained in real time to obtain a fourth indoor air outlet temperature, and according to the size of the fourth indoor air outlet temperature, the frequency of the compressor is increased or kept unchanged.

6. The method according to claim 5, characterized in that After increasing the frequency of the compressor according to the fourth indoor air outlet temperature, or keeping the frequency of the compressor unchanged, the method further includes: The first adjustment step is performed once every time the first preset time has passed. The first adjustment step includes determining the target frequency adjustment value as a frequency adjustment value corresponding to the air outlet temperature of the indoor unit at the current moment; and adjusting the frequency of the compressor to the difference between the current frequency and the target frequency adjustment value.

7. The method according to claim 2, characterized in that After maintaining the rotation speed of the outdoor fan motor and the frequency of the compressor of the heat pump air conditioner unchanged, the method further includes: The second adjustment step is performed once every second preset time period, and the second adjustment step includes adjusting the speed of the outdoor fan motor or the frequency of the compressor of the heat pump air conditioner according to the size of the first difference and the second difference.

8. A control device for a heat pump air conditioner, characterized in that: include: A first acquisition unit is used to acquire a first indoor air outlet temperature and a first outdoor motor temperature, wherein the first indoor air outlet temperature and the first outdoor motor temperature are respectively the air outlet temperature of the indoor unit of the heat pump air conditioner at a first preset time and the motor temperature of the outdoor fan blade motor of the heat pump air conditioner; A second acquisition unit is used to acquire a second indoor air outlet temperature and a second outdoor motor temperature, wherein the second indoor air outlet temperature and the second outdoor motor temperature are respectively the air outlet temperature of the indoor unit at a second preset time and the motor temperature of the outdoor fan blade motor, and the time from the start time of the indoor unit startup to the first preset time is less than the time from the start time of the indoor unit startup to the second preset time; The first processing unit is used to adjust the speed of the outdoor fan blade motor or the frequency of the compressor of the heat pump air conditioner according to the size of the first difference and the second difference to reduce the number of defrosting times, the first difference is the difference between the second indoor air outlet temperature and the first indoor air outlet temperature, and the second difference is the difference between the second outdoor motor temperature and the first outdoor motor temperature.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the method according to any one of claims 1 to 7.

10. A control system for a heat pump air conditioner, characterized in that: include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include methods for executing any one of claims 1 to 7.

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