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

Abstract

The application provides a heat pump air conditioner control method, device, medium and system. The method compares 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 to determine the frosting condition of the outdoor heat exchanger, adjusts the speed of the outdoor fan blade motor, or adjusts the frequency of the compressor of the heat pump air conditioner, so as to reduce the defrosting frequency, thereby prolonging the heating time compared with the prior art, delaying the frosting amount of the outdoor heat exchanger, prolonging the heating time, improving the heating comfort of the user, reducing the defrosting frequency, and thereby solving the problem that the prior art lacks a technical solution for improving the heating comfort of the user by reducing the defrosting frequency of the heat pump air conditioner.

Description

TECHNICAL FIELD

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

[0002] When the heat pump air conditioner is used under low-temperature and high-humidity conditions, the heat exchanger of the outdoor unit will frost after a period of operation, 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, defrosting needs to be performed when the frost amount reaches a certain degree. The main defrosting method of the existing air conditioner is to switch the four-way valve to perform refrigeration circulation. In the process of defrosting, the indoor fan is stopped, which cannot provide heat to the indoor, and at the same time, the low-temperature refrigerant flowing through the indoor heat exchanger will also absorb heat from the indoor, which reduces the room temperature and also reduces the comfort of the room.

[0003] That is, the prior art lacks a technical solution for reducing the defrosting frequency of a heat pump air conditioner to improve the heating comfort of users. SUMMARY

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

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a control method of a heat pump air conditioner is provided, which comprises: acquiring 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 an indoor unit of the heat pump air conditioner at a first preset time and the motor temperature of an outdoor blade motor of the heat pump air conditioner; acquiring 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 time and the motor temperature of the outdoor blade motor, the time length from the starting time when the indoor unit is turned on to the first preset time being less than the time length from the starting time when the indoor unit is turned on to the second preset time; and adjusting the rotating speed of the outdoor blade motor or adjusting the frequency of a compressor of the heat pump air conditioner according to the size of a first difference value and a second difference value to reduce the defrosting frequency, the first difference value being the difference between the second indoor outlet air temperature and the first indoor outlet air temperature, and the second difference value being the difference between the second outdoor motor temperature and the first outdoor motor temperature.

[0006] Optionally, the adjusting the rotating speed of the outdoor fan motor or the adjusting the frequency of the compressor of the heat pump air conditioner according to the size of the first difference and the second difference comprises: in the case that the first difference is less than an outlet air temperature threshold and the second difference is greater than a motor temperature threshold, obtaining an outlet air temperature of the indoor unit at a current time to obtain a third indoor outlet air temperature, and adjusting the rotating speed of the outdoor fan motor or the frequency of the compressor of the heat pump air conditioner according to the third indoor outlet air temperature; in the case that 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, keeping the rotating speed of the outdoor fan motor and the frequency of the compressor of the heat pump air conditioner unchanged.

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

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

[0009] Optionally, after the rotating speed of the outdoor fan motor is adjusted to the difference value between the current rotating speed and the target rotating speed adjustment value, the method further comprises: obtaining an outlet air temperature of the indoor unit at a current time to obtain a fourth indoor outlet air temperature after the heat pump air conditioner runs for a first preset time length, and increasing the frequency of the compressor or keeping the frequency of the compressor unchanged according to the size of the fourth indoor outlet air temperature.

[0010] Optionally, after the frequency of the compressor is increased or kept unchanged according to the size of the fourth indoor outlet air temperature, the method further comprises: performing a first adjustment step once every time the first preset time length is elapsed, the first adjustment step comprising: determining the target frequency adjustment value as a frequency adjustment value corresponding to the outlet air temperature of the indoor unit at a current time; and adjusting the frequency of the compressor to the difference value between the current frequency and the target frequency adjustment value.

[0011] Optionally, after keeping the rotating speed of the outdoor fan motor and the frequency of the compressor of the heat pump air conditioner unchanged, the method further comprises: performing a second adjusting step every second preset time length, the second adjusting step comprising adjusting the rotating speed of the outdoor fan motor or adjusting the frequency of the compressor of the heat pump air conditioner according to the size of the first difference value and the second difference value.

[0012] According to another aspect of the present application, a control device of a heat pump air conditioner is provided, comprising: a first obtaining unit configured to obtain 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 an outlet air temperature of an indoor unit of the heat pump air conditioner at a first preset time and a motor temperature of an outdoor fan motor of the heat pump air conditioner; a second obtaining unit configured to obtain 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 an outlet air temperature of the indoor unit at a second preset time and a motor temperature of the outdoor fan motor, a time length from a starting time when the indoor unit is turned on to the first preset time being less than a time length from the starting time when the indoor unit is turned on to the second preset time; and a first processing unit configured to adjust a rotating speed of the outdoor fan motor or adjust a frequency of a compressor of the heat pump air conditioner according to the size of a first difference value and a second difference value, so as to reduce the number of defrosting, the first difference value being a difference between the second indoor outlet air temperature and the first indoor outlet air temperature, and the second difference value being a 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, the computer readable storage medium comprising a stored program, wherein the program, when executed, controls a device in which the computer readable storage medium is located to perform any of the methods.

[0014] According to another aspect of the present application, a control system of 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 configured to be executed by the one or more processors, and the one or more programs comprise instructions for performing any of the methods.

[0015] 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, the frosting condition of the outdoor heat exchanger is determined, the rotating speed of the outdoor fan blade motor is adjusted, or the frequency of the compressor of the heat pump air conditioner is adjusted, so as to reduce the defrosting frequency, thereby prolonging the heating time compared with the prior art, delaying the frosting amount of the outdoor heat exchanger, prolonging the heating time, improving the heating comfort of the user, reducing the defrosting frequency, and solving the problem that the prior art lacks a technical solution for improving the heating comfort of the user by reducing the defrosting frequency of the heat pump air conditioner. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings constituting a part of the specification of the present application are used to provide a further understanding of the present application, the illustrative embodiments of the present application and the description thereof 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 flowchart of a control method of a heat pump air conditioner according to an embodiment of the present application is shown;

[0018] Figure 2 A flowchart of another control method of 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 of a heat pump air conditioner according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. 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 present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to 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 in the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0023] As introduced in the background, when the heat pump air conditioner is used in low temperature and high humidity conditions, the outdoor heat exchanger will frost after a period of operation, increasing the thermal resistance and wind resistance of the heat exchanger, which is not conducive to heat exchange, making the performance of the air conditioner worse. In order to make the air conditioner run normally, when the amount of frost reaches a certain degree, the air conditioner needs to be defrosted. The main defrosting method of the existing air conditioner is to switch the four-way valve to perform refrigeration cycle. In the process of defrosting, the indoor fan is stopped, which cannot provide heat to the indoor, and at the same time, due to the low temperature of the refrigerant flowing through the indoor heat exchanger, heat will also be absorbed from the indoor, reducing the room temperature and the comfort of the room. To solve the problem that the prior art lacks a technical solution for reducing the defrosting frequency of the heat pump air conditioner to improve the heating comfort of the user, 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 application will be described clearly and completely in combination with the drawings in the embodiments of the present application.

[0025] In the present 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 drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described herein can be executed in a different order.

[0026] Figure 1 is a flowchart of a control method for a heat pump air conditioner according to the embodiments of the present application. As shown in Figure 1 the method comprises the following steps:

[0027] Step S101, acquiring 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 time and the motor temperature of the outdoor fan blade motor of the heat pump air conditioner, respectively;

[0028] Specifically, when the start-up time is 20-30 minutes (i.e., the time is counted from the start of the heat pump air conditioner), that is, the indoor unit of the heat pump air conditioner obtains the outlet air temperature of the indoor unit at the first preset time and the motor temperature of the outdoor fan blade motor of the heat pump air conditioner;

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

[0030] In step S102, the second indoor outlet air temperature and the second outdoor motor temperature are obtained, and the second indoor outlet air temperature and the second outdoor motor temperature are the outlet air temperature of the indoor unit at the second preset time and the motor temperature of the outdoor fan blade motor, respectively. The time from the start time of the indoor unit to the first preset time is less than the time from the start time of the indoor unit to the second preset time;

[0031] Specifically, the first difference and the second difference are calculated, and then the first difference and the second difference are compared to determine the frosting condition of the outdoor unit heat exchanger, and the speed of the outdoor fan blade motor or the frequency of the compressor of the heat pump air conditioner is adjusted to reduce the defrosting frequency, thereby prolonging the heating time compared to the prior art, thereby delaying the frosting amount of the outdoor unit heat exchanger, prolonging the heating time, and improving the user's heating comfort.

[0032] In step S103, the speed of the outdoor fan blade motor 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, 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.

[0033] In the above steps, the difference between the second indoor outlet air temperature and the first indoor outlet air temperature and the difference between the second outdoor motor temperature and the first outdoor motor temperature are compared to determine the frosting condition of the outdoor unit heat exchanger, and the speed of the outdoor fan blade motor or the frequency of the compressor of the heat pump air conditioner is adjusted to reduce the defrosting frequency, thereby prolonging the heating time compared to the prior art, thereby delaying the frosting amount of the outdoor unit heat exchanger, prolonging the heating time, and improving the user's heating comfort, reducing the defrosting frequency, and thereby solving the problem of the prior art that lacks a technical solution to improve the user's heating comfort by reducing the defrosting frequency of the heat pump air conditioner.

[0034] In an embodiment of the present application, the speed of the outdoor fan blade motor 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, comprising:

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

[0036] In the case that the first difference is greater than or equal to the outlet air temperature threshold value and / or the second difference is less than or equal to the motor temperature threshold value, the rotation speed of the outdoor fan blade motor and the frequency of the compressor of the heat pump air conditioner remain unchanged.

[0037] After the rotation speed of the outdoor fan blade motor and the frequency of the compressor of the heat pump air conditioner remain unchanged, the method further comprises: performing a second adjustment step every second preset time length, and the second adjustment step comprises 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 sizes of the first difference and the second difference. By continuously adjusting the frequency of the compressor downward, the evaporation temperature of the outdoor unit heat exchanger is increased, thereby reducing the heat absorbed by the outdoor unit heat exchanger from the outside, delaying the frost amount of the outdoor unit heat exchanger, and prolonging the heating time.

[0038] Specifically, in the case that the first difference is greater than or equal to the outlet air temperature threshold value and / or the second difference is less than or equal to the motor temperature threshold value, it is determined that the frosting condition of the outdoor unit heat exchanger is not frosting, and therefore the rotation speed of the outdoor fan blade motor and the frequency of the compressor of the heat pump air conditioner remain unchanged.

[0039] In the case that the first difference is less than the outlet air temperature threshold value and the second difference is greater than the motor temperature threshold value, it is determined that the frosting condition of the outdoor unit heat exchanger is frosting, and the rotation speed of the outdoor fan blade motor or the frequency of the compressor of the heat pump air conditioner needs to be adjusted. The adjustment is performed once every 10 minutes to prevent the frosting degree from increasing, and in each adjustment process, the currently obtained indoor outlet air temperature and outdoor motor temperature are used to subtract the corresponding first indoor outlet air temperature and first outdoor motor temperature (i.e., the latter minus the former of the indoor outlet air temperature, and the latter minus the former of the outdoor motor temperature), and the adjustment control is performed according to the two differences and step S103, which will not be described again.

[0040] In an embodiment of the present application, the method further comprises:

[0041] obtaining a current inner ring temperature and a current outer ring temperature;

[0042] determining the outlet air temperature threshold value and the motor temperature threshold value corresponding to the current inner ring temperature and the current outer ring temperature.

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

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

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

[0046] determining a target frequency adjustment value as the 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.

[0047] Specifically, the optimal adjustment mode is to first adjust the speed of the outdoor fan motor, and then adjust the frequency of the compressor after running for 10-20 minutes at the speed, and the adjustment mode is determined according to the corresponding relationship between the indoor air outlet temperature and the indoor fan speed and the corresponding relationship between the indoor air outlet temperature and the compressor frequency.

[0048] The corresponding relationship between the indoor air outlet temperature and the indoor fan speed is shown in Table 1, and the corresponding relationship between the indoor air outlet temperature and the 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 represents the current speed of the indoor fan, R 内转1 , R 内转2 , R 内转3 is a preset indoor fan speed value, and R 内转1 < R 内转2 < R 内转3 , and the values of the three are in the range of 20-50 rpm. In order to ensure the heating effect in the room, the indoor fan speed is adjusted according to the air outlet temperature. The higher the indoor air outlet temperature, the less the frost amount on the outdoor heat exchanger at this time, and the indoor fan speed does not need to be reduced too much. At the same time, the indoor fan speed is adjusted to different degrees for different indoor air outlet temperatures, so as to reduce the heat exchange amount of the indoor heat exchanger, increase the evaporation temperature of the outdoor heat exchanger, and thus reduce the heat absorbed by the outdoor heat exchanger from the outside, delay the frost amount of the outdoor heat exchanger, and prolong the heating time.

[0052] Table 2

[0053]

[0054]

[0055] F represents the current compressor operating frequency, F1, F2, and F3 are preset compressor frequency values, and F1 < F2 < F3, and the values of the three are in the range of 5-10 Hz. In order to ensure the heating effect in the room, the compressor frequency is adjusted according to the outlet air temperature. The compressor frequency can be reduced when the outlet air temperature in the room is high. At the same time, the compressor frequency is adjusted to different degrees according to different outlet air temperatures in the room, so as to improve the evaporation temperature of the outdoor heat exchanger, thereby reducing the heat absorbed by the outdoor heat exchanger from the outside, delaying the frost amount of the outdoor heat exchanger, prolonging the heating time, and T 出风3 and T 出风4 are preset temperature values. When the outlet air temperature is in different preset temperature ranges, the compressor frequency is adjusted. The values can be determined according to the working time of the heat pump air conditioner.

[0056] In an embodiment of the present application, after adjusting the speed of the above-mentioned outdoor fan motor to the difference between the current speed and the above-mentioned target speed adjustment value, the method further comprises:

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

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

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

[0060] Specifically, the amplitude of increasing the frequency of the above-mentioned compressor can be 12 Hz.

[0061] In an embodiment of the present application, after increasing or keeping unchanged the frequency of the above-mentioned compressor according to the size of the above-mentioned fourth indoor outlet air temperature, the method further comprises:

[0062] Every time the first preset time length passes, the first adjustment step is executed, and the first adjustment step includes determining the target frequency adjustment value as a frequency adjustment value corresponding to the outlet air temperature of the indoor unit at the current time, and adjusting the frequency of the compressor to the difference between the current frequency and the target frequency adjustment value.

[0063] Specifically, by continuously adjusting the frequency of the compressor downward, the evaporation temperature of the outdoor unit heat exchanger is increased, thereby reducing the heat absorbed by the outdoor unit heat exchanger from the outside, delaying the frost amount of the outdoor unit heat exchanger, and prolonging the heating time.

[0064] In order to enable those skilled in the art to more clearly understand the technical solutions 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 conjunction with specific embodiments.

[0065] The present embodiment relates to a specific control method of a heat pump air conditioner, as shown in Figure 2 The present embodiment relates to a specific control method of a heat pump air conditioner, as shown in

[0066] The first indoor outlet air temperature and the first outdoor motor temperature are obtained, and 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 the first preset time and the motor temperature of the outdoor fan blade motor of the heat pump air conditioner;

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

[0068] In the case where the first difference is greater than or equal to the outlet air temperature threshold value, and / or the second difference is less than or equal to the motor temperature threshold value, the speed of the outdoor fan blade motor and the frequency of the compressor of the heat pump air conditioner are kept unchanged, and every time the second preset time length (i.e. 10 min) passes, the second adjustment step is executed, and the second adjustment step includes 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; 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] In the case where the first difference is less than the outlet air temperature threshold value and the second difference is greater than the motor temperature threshold value, the outlet air temperature of the indoor unit at the current time is obtained in real time to obtain the third indoor outlet air temperature;

[0070] determining a target rotating speed adjustment value as a rotating speed adjustment value corresponding to the third indoor air outlet temperature; adjusting the rotating speed of the outdoor fan blade motor to a difference between the current rotating speed and the target rotating speed adjustment value, and running for 10 minutes;

[0071] acquiring the indoor air outlet temperature of the indoor unit at the current time in real time to obtain a fifth indoor air outlet temperature, determining a target frequency adjustment value as a frequency adjustment value corresponding to the fifth indoor air outlet temperature, and adjusting the frequency of the compressor to a difference between the current frequency and the target frequency adjustment value.

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

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

[0074] 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 the logical order is shown in the flowchart, in some cases, the steps shown or described herein can be executed in an order different from that shown herein.

[0075] The embodiment of the present application also provides a control device of a heat pump air conditioner. It should be noted that the control device of the heat pump air conditioner of the embodiment of the present application can be used to execute the control method for the heat pump air conditioner provided by the embodiment of the present application. The device is used to realize the above-mentioned embodiments and preferred embodiments, and will not be described again. As used below, the term "module" can be a combination of software and / or hardware that realizes a predetermined function. Although the device described in the following embodiments is preferably realized in software, the realization of hardware, or a combination of software and hardware, is also possible and conceived.

[0076] The control device of the heat pump air conditioner provided by the embodiment of the present application is described below.

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

[0078] The first acquisition unit 31 is configured to acquire a first indoor air outlet temperature and a first outdoor motor temperature, the first indoor air outlet temperature and the first outdoor motor temperature being respectively an air outlet temperature of the indoor unit of the heat pump air conditioner at a first preset time and a motor temperature of an outdoor fan blade motor of the heat pump air conditioner;

[0079] The second acquisition unit 32 is configured to acquire a second indoor air outlet temperature and a second outdoor motor temperature, the second indoor air outlet temperature and the second outdoor motor temperature being respectively an air outlet temperature of the indoor unit at a second preset time and a motor temperature of the outdoor fan blade motor, a time length from a starting time when the indoor unit is turned on to the first preset time being less than a time length from the starting time when the indoor unit is turned on to the second preset time;

[0080] The first processing unit 33 is configured to adjust a rotating speed of the outdoor fan blade motor or adjust a frequency of a compressor of the heat pump air conditioner according to a size of a first difference value and a second difference value, so as to reduce defrosting times, the first difference value being a difference value between the second indoor air outlet temperature and the first indoor air outlet temperature, and the second difference value being a difference value between the second outdoor motor temperature and the first outdoor motor temperature.

[0081] In the device, the defrosting condition of the outdoor unit heat exchanger is determined 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 the outdoor fan blade motor is adjusted, or the frequency of the compressor of the heat pump air conditioner is adjusted, so as to reduce the defrosting times, thereby prolonging the heating time, delaying the defrosting amount of the outdoor unit heat exchanger, prolonging the heating time, improving the heating comfort of the user, reducing the defrosting times, and thus solving the problem that the prior art lacks a technical solution for improving the heating comfort of the user by reducing the defrosting times of the heat pump air conditioner.

[0082] In an embodiment of the present application, the first processing unit comprises a first processing module and a second processing module, the first processing module is configured to acquire an air outlet temperature of the indoor unit at a current time to obtain a third indoor air outlet temperature in a case that the first difference value is less than an air outlet temperature threshold value and the second difference value is greater than a motor temperature threshold value, and adjust the rotating speed of the outdoor fan blade motor or adjust the frequency of the compressor of the heat pump air conditioner according to the third indoor air outlet temperature, and the second processing module is configured to keep the rotating speed of the outdoor fan blade motor and the frequency of the compressor of the heat pump air conditioner unchanged in a case that the first difference value is greater than or equal to the air outlet temperature threshold value and / or the second difference value is less than or equal to the motor temperature threshold value.

[0083] In an embodiment of the present application, the device further comprises a third acquisition unit and a second processing unit; the third acquisition unit is configured to acquire a current inner ring temperature and a current outer ring temperature; and the second processing unit is configured to determine the air outlet temperature threshold and the motor temperature threshold corresponding to the current inner ring temperature and the current outer ring temperature.

[0084] In an embodiment of the present application, the first processing module comprises a first determination sub-module and a second determination sub-module; the first determination sub-module is configured to 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 blade motor to a difference between a current speed and the target speed adjustment value; and the second determination sub-module is configured to 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 a current frequency and the target frequency adjustment value.

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

[0086] In an embodiment of the present application, the first processing module comprises 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 configured to execute a first adjustment step once every time the first preset time length is elapsed, and the first adjustment step comprises determining the target frequency adjustment value as a frequency adjustment value corresponding to the air outlet temperature of the indoor unit at the current time; and adjusting the frequency of the compressor to a difference between a current frequency and the target frequency adjustment value.

[0087] In an embodiment of the present application, the first processing unit comprises a third processing module; after keeping the 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 configured to execute a second adjustment step once every time a second preset time length is elapsed, and the second adjustment step comprises 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 value and the second difference value.

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

[0089] The processor comprises a core, and the core calls the corresponding program units in the memory. One or more cores can be provided, and the problem that the prior art lacks a technical solution for improving the heating comfort of a user by reducing the defrosting frequency of a heat pump air conditioner can be solved by adjusting the core parameters.

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

[0091] The embodiment of the present application provides a computer readable storage medium, and the computer readable storage medium comprises a stored program, wherein the computer readable storage medium controls a device in which the computer readable storage medium is located to execute the control method of the heat pump air conditioner when the program runs.

[0092] The embodiment of the present application provides a processor, and the processor is used for running a program, wherein the control method of the heat pump air conditioner is executed when the program runs.

[0093] The embodiment of the present application provides a device, and the device comprises a processor, a memory and a program stored in the memory and capable of running on the processor, and the processor executes the program to realize at least the following steps: acquiring 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 an air outlet temperature of an indoor unit of the heat pump air conditioner at a first preset time and a motor temperature of an outdoor fan blade motor of the heat pump air conditioner; acquiring 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 an air outlet temperature of the indoor unit at a second preset time and a motor temperature of the outdoor fan blade motor, and a time length from a starting time when the indoor unit is started to the first preset time is less than a time length from the starting time when the indoor unit is started to the second preset time; and adjusting the rotating speed of the outdoor fan blade motor or adjusting the frequency of a compressor of the heat pump air conditioner according to the size of a first difference value and a second difference value to reduce the defrosting frequency, wherein the first difference value is a difference value between the second indoor air outlet temperature and the first indoor air outlet temperature, and the second difference value is a difference value between the second outdoor motor temperature and the first outdoor motor temperature. The device in the present application can be a server, a PC, a PAD, a mobile phone or the like.

[0094] The application also provides a computer program product, when executed on a data processing device, is adapted to execute a program that initializes at least the following method steps: obtaining a first indoor air outlet temperature and a first outdoor motor temperature, the first indoor air outlet temperature and the first outdoor motor temperature being the air outlet temperature of an indoor unit of the heat pump air conditioner at a first preset time and the motor temperature of an outdoor fan blade motor of the heat pump air conditioner, respectively; obtaining a second indoor air outlet temperature and a second outdoor motor temperature, the second indoor air outlet temperature and the second outdoor motor temperature being the air outlet temperature of the indoor unit at a second preset time and the motor temperature of the outdoor fan blade motor, respectively, the time length from the start time of the indoor unit being turned on to the first preset time being less than the time length from the start time of the indoor unit being turned on to the second preset time; adjusting the rotating 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 a first difference value and a second difference value, so as to reduce the defrosting frequency, the first difference value being the difference between the second indoor air outlet temperature and the first indoor air outlet temperature, and the second difference value being the difference between the second outdoor motor temperature and the first outdoor motor temperature.

[0095] The application also provides a control system of 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 comprise a program for executing any of the above methods. 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 to determine the frosting condition of the outdoor unit heat exchanger, the rotating 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 defrosting frequency, thereby prolonging the heating time compared with the prior art, delaying the frosting amount of the outdoor unit heat exchanger, prolonging the heating time, improving the heating comfort of the user, reducing the defrosting frequency, and thus solving the problem of the prior art that there is no technical solution for improving the heating comfort of the user by reducing the defrosting frequency of the heat pump air conditioner.

[0096] It should be apparent to those skilled in the art that the modules or steps of the application described above can be implemented with a general purpose computer, and can be centralized in a single computer or distributed among a network of computers, and can be implemented with program code executable by a computer, and thus can be stored in a storage device and executed by a computer, and in some cases, the steps shown or described can be executed in a different order than shown or described, or can be implemented as separate integrated circuit modules or as a single integrated circuit module, and thus the application is not limited to any particular combination of hardware and software.

[0097] Those skilled in the art will appreciate that embodiments of the application can be devised for a method, a system, or a computer program product. Accordingly, the application can be embodied in the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the application can be in the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk memory, CD-ROMs, optical storage media, etc.) embodying computer readable program code.

[0098] The present application is described herein with reference to the flowchart illustrations and / or block diagrams of the methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart illustrations and / or block diagrams. Figure 1 The means for implementing each of the flowchart illustrations and / or block diagrams Figure 1 The means for implementing each of the flowchart illustrations and / or block diagrams

[0099] These computer program instructions can also be stored in a computer- readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the flowchart illustrations and / or block diagrams. Figure 1 The means for implementing each of the flowchart illustrations and / or block diagrams Figure 1 The means for implementing each of the flowchart illustrations and / or block diagrams

[0100] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the flowchart illustrations and / or block diagrams.Figure 1 one or more processes and / or blocks Figure 1 the function(s) specified in the process or block.

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

[0102] The memory can include non-persistent memory and / or volatile memory, such as random access memory (RAM) and / or cache memory, etc. The memory is an example of computer readable media.

[0103] Computer readable media includes permanent and non-permanent, removable and non-removable media implemented in any method or technology for storage of information such as 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 disc read only memory (CD-ROM), digital versatile disc (DVD), or other optical storage, magnetic cassettes, magnetic disks storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible to a computing device. According to the definition herein, computer readable media does not include transitory media, such as modulated data signals and carrier waves.

[0104] It should also be noted that the terms "comprising", "containing", or any other variant thereof, are intended to encompass non-exclusive inclusion, such that a process, method, article or apparatus that comprises a list of elements does not only include those elements, but can also include other elements not expressly listed or inherent to such process, method, article or apparatus. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus that includes the element.

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

[0106] 1) The heat pump air conditioner control method of this application determines the frosting status of the outdoor unit 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. It then adjusts the speed of the outdoor fan motor or the frequency of the heat pump air conditioner compressor to reduce the number of defrosting cycles. Compared with existing solutions, this method can extend the heating time, thereby delaying the amount of frost on the outdoor unit heat exchanger, extending the heating time, improving the user's heating comfort, and reducing the number of defrosting cycles. This solves the problem that the prior art lacks a technical solution to improve the user's heating comfort by reducing the number of defrosting cycles of the heat pump air conditioner.

[0107] 2) The control device for the heat pump air conditioner of this application determines the frosting status of the outdoor unit 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. It adjusts the speed of the outdoor fan motor or the frequency of the heat pump air conditioner compressor to reduce the number of defrosting cycles. Compared with existing solutions, this can extend the heating time, thereby delaying the amount of frost on the outdoor unit heat exchanger, extending the heating time, improving the user's heating comfort, and reducing the number of defrosting cycles. This solves the problem that the prior art lacks a technical solution to improve the user's heating comfort by reducing the number of defrosting cycles of the heat pump air conditioner.

[0108] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A control method of a heat pump air conditioner, characterized by, The method comprises: obtaining a first indoor air outlet temperature and a first outdoor motor temperature, the first indoor air outlet temperature and the first outdoor motor temperature being an air outlet temperature of an indoor unit of the heat pump air conditioner at a first preset time and a motor temperature of an outdoor fan blade motor of the heat pump air conditioner, respectively; obtaining a second indoor air outlet temperature and a second outdoor motor temperature, the second indoor air outlet temperature and the second outdoor motor temperature being an air outlet temperature of the indoor unit at a second preset time and a motor temperature of the outdoor fan blade motor, respectively, a time length from a starting time when the indoor unit is turned on to the first preset time being less than a time length from the starting time when the indoor unit is turned on to the second preset time; adjusting a rotating speed of the outdoor fan blade motor or a frequency of a compressor of the heat pump air conditioner according to a size of a first difference value and a second difference value, the first difference value being a difference value between the second indoor air outlet temperature and the first indoor air outlet temperature, the second difference value being a difference value between the second outdoor motor temperature and the first outdoor motor temperature; adjusting the rotating 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 value and the second difference value, comprising: in a case where the first difference value is less than an air outlet temperature threshold value and the second difference value is greater than a motor temperature threshold value, obtaining an air outlet temperature of the indoor unit at a current time in real time to obtain a third indoor air outlet temperature, and adjusting the rotating speed of the outdoor fan blade motor or the frequency of the compressor of the heat pump air conditioner according to the third indoor air outlet temperature; in a case where the first difference value is greater than or equal to the air outlet temperature threshold value and / or the second difference value is less than or equal to the motor temperature threshold value, keeping the rotating speed of the outdoor fan blade motor and the frequency of the compressor of the heat pump air conditioner unchanged.

2. The method of claim 1, wherein, The method further comprises: obtaining a current inner ring temperature and a current outer ring temperature; determining the air outlet temperature threshold value and the motor temperature threshold value corresponding to the current inner ring temperature and the current outer ring temperature.

3. The method of claim 1, wherein, Adjusting the rotating speed of the outdoor fan blade motor or the frequency of the compressor of the heat pump air conditioner according to the third indoor air outlet temperature, comprising: determining a target rotating speed adjustment value as a rotating speed adjustment value corresponding to the third indoor air outlet temperature; and adjusting the rotating speed of the outdoor fan blade motor to a difference value between a current rotating speed and the target rotating 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 a difference value between a current frequency and the target frequency adjustment value.

4. The method of claim 3, wherein, After adjusting the rotating speed of the outdoor fan blade motor to the difference value between the current rotating speed and the target rotating speed adjustment value, the method further comprises: obtaining an air outlet temperature of the indoor unit at a current time in real time after the heat pump air conditioner runs for a first preset time length to obtain a fourth indoor air outlet temperature, and increasing the frequency of the compressor or keeping the frequency of the compressor unchanged according to a size of the fourth indoor air outlet temperature.

5. The method of claim 4, wherein, After the frequency of the compressor is increased or kept unchanged according to the size of the indoor-outlet-air temperature of the fourth chamber, the method further comprises: The first adjustment step is performed once every first preset time length, and the first adjustment step comprises determining the target frequency adjustment value as a frequency adjustment value corresponding to the outlet air temperature of the indoor unit at the current time, and adjusting the frequency of the compressor to the difference between the current frequency and the target frequency adjustment value.

6. The method of claim 1, wherein, After the rotating speed of the outdoor fan blade motor and the frequency of the compressor of the heat pump air conditioner are kept unchanged, the method further comprises: The second adjustment step is performed once every second preset time length, and the second adjustment step comprises adjusting the rotating speed of the outdoor fan blade motor or adjusting the frequency of the compressor of the heat pump air conditioner according to the sizes of the first difference value and the second difference value.

7. A control device for a heat pump air conditioner, characterized in that, Comprise: The first acquisition unit is configured 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 being respectively an outlet air temperature of an indoor unit of the heat pump air conditioner at a first preset time and a motor temperature of an outdoor fan blade motor of the heat pump air conditioner; The second acquisition unit is configured 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 being respectively an outlet air temperature of the indoor unit at a second preset time and a motor temperature of the outdoor fan blade motor, a time length from a starting time when the indoor unit is turned on to the first preset time being less than a time length from the starting time when the indoor unit is turned on to the second preset time; The first processing unit is configured to adjust the rotating speed of the outdoor fan blade motor or adjust the frequency of the compressor of the heat pump air conditioner according to the sizes of a first difference value and a second difference value, so as to reduce the defrosting frequency, the first difference value being a difference between the second indoor-outlet-air temperature and the first indoor-outlet-air temperature, and the second difference value being a difference between the second outdoor motor temperature and the first outdoor motor temperature; The first processing unit comprises a first processing module and a second processing module, the first processing module is configured to acquire an outlet air temperature of the indoor unit at a current time in real time to obtain a third indoor-outlet-air temperature, and adjust the rotating speed of the outdoor fan blade motor or adjust the frequency of the compressor of the heat pump air conditioner according to the third indoor-outlet-air temperature, in a case that the first difference value is less than an outlet air temperature threshold value and the second difference value is greater than a motor temperature threshold value; The second processing module is configured to keep the rotating speed of the outdoor fan blade motor and the frequency of the compressor of the heat pump air conditioner unchanged, in a case that the first difference value is greater than or equal to the outlet air temperature threshold value and / or the second difference value is less than or equal to the motor temperature threshold value.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium comprises a stored program, wherein the program controls the device where the computer readable storage medium is located to perform the method of any one of claims 1 to 6 when the program is running.

9. A control system for a heat pump air conditioner, characterized by Comprise: one or more processors, 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, the one or more programs including programs for performing the method of any one of claims 1 to 6.

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