Air conditioner, control method of air conditioner and computer program product

Abstract

The invention relates to an air conditioner, a control method of the air conditioner and a computer program product, and the control method comprises the following steps: controlling the air conditioner to enter a defrosting mode in response to a condition that a first heat exchanger meets a defrosting condition; acquiring the temperature of the first heat exchanger; acquiring high-pressure saturation temperature according to the temperature of the first heat exchanger; judging whether the high-pressure saturation temperature is greater than or equal to a temperature threshold; if yes, the first fan is started, and the rotating speed of the first fan is controlled according to the high-pressure saturation temperature. According to the invention, a pressure sensor is removed, so that more efficient experience can be brought in the aspects of production process and user use; and in the defrosting process, the high pressure is controlled within a reasonable range, high-pressure faults cannot be reported, faults such as high-pressure protection or exhaust protection of the air conditioner in the defrosting period are effectively avoided, defrosting can be effectively achieved, and the stable performance of the air conditioner is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air treatment, in particular to an air conditioner, a control method of the air conditioner and a computer program product. BACKGROUND

[0002] In the current air conditioner, frost or ice will be generated on the heat exchanger during use. When the frost or ice accumulates to a certain extent, it will hinder the air flow and reduce the heat exchange efficiency, so that the air conditioner cannot effectively exchange heat, resulting in weakening of the refrigeration or heating effect. Continuous frost can cause damage to the heat exchanger and fan of the air conditioner, and the defrosting process can prevent damage to these components. Therefore, the existing air conditioning system is usually equipped with an automatic defrosting control mechanism. When the sensor detects that the frost layer reaches a certain extent, the system will automatically switch to the defrosting mode. During the defrosting process, the air conditioner switches the heat exchange mode, uses high-temperature and high-pressure refrigerant to melt the frost, and at the same time, the fan is turned off or the rotating speed is reduced to help the frost melt more quickly, but high-pressure protection failure is likely to occur. In order to avoid high-pressure protection failure, the current method is to detect the high-pressure pressure by a pressure sensor, and to control the high-pressure pressure within a reasonable range by a corresponding control method. However, the cost of the pressure sensor is high, resulting in high overall cost of the air conditioner. SUMMARY

[0003] In view of the above problems, the present application is proposed in order to provide an air conditioner, a control method of the air conditioner and a computer program product which overcome the above problems or at least partially solve the above problems, and aims to solve the problems of existing air conditioners that are prone to high-pressure protection or exhaust protection failure during defrosting and have high production cost.

[0004] Specifically, the present application provides the following technical solutions:

[0005] A control method of an air conditioner, comprising:

[0006] In response to a first heat exchanger meeting a defrosting condition, controlling the air conditioner to enter a defrosting mode;

[0007] Obtaining a temperature of the first heat exchanger;

[0008] According to the temperature of the first heat exchanger, obtaining a high-pressure saturation temperature;

[0009] Determining whether the high-pressure saturation temperature is greater than or equal to a temperature threshold value;

[0010] If yes, starting a first fan and controlling the rotating speed of the first fan according to the high-pressure saturation temperature.

[0011] Optionally, the control method further comprises:

[0012] Obtaining an ambient temperature in which the first heat exchanger is located;

[0013] The temperature threshold is obtained according to the ambient temperature.

[0014] Optionally, before the step of controlling the rotation speed of the first air fan according to the high-pressure saturation temperature, the method further comprises:

[0015] controlling the first air fan to operate at a set rotation speed for a first time length; wherein the set rotation speed is less than a maximum rotation speed value of the first air fan.

[0016] Optionally, the step of controlling the rotation speed of the first air fan according to the high-pressure saturation temperature comprises:

[0017] obtaining a temperature change rate of the high-pressure saturation temperature according to the high-pressure saturation temperature;

[0018] controlling the rotation speed of the first air fan according to the temperature change rate.

[0019] Optionally, a mapping relationship table of temperature change rates and preset rotation speed values is pre-stored in the air conditioner.

[0020] The step of controlling the rotation speed of the first air fan according to the temperature change rate comprises:

[0021] determining a preset rotation speed value corresponding to the current temperature change rate according to the mapping relationship table;

[0022] controlling the first air fan to execute the corresponding preset rotation speed value.

[0023] Optionally, the step of controlling the rotation speed of the first air fan according to the temperature change rate comprises:

[0024] in response to the temperature change rate being in a first interval, controlling the first air fan to execute a first rotation speed value;

[0025] in response to the temperature change rate being in a second interval, controlling the first air fan to execute a second rotation speed value;

[0026] in response to the temperature change rate being in a third interval, controlling the first air fan to execute a third rotation speed value;

[0027] in response to the temperature change rate being in a fourth interval, controlling the first air fan to execute a fourth rotation speed value;

[0028] wherein the temperature change rate values corresponding to the first interval, the second interval, the third interval and the fourth interval gradually increase, and the first rotation speed value < the second rotation speed value < the third rotation speed value < the fourth rotation speed value.

[0029] Optionally, the rotation speed of the first air fan and the temperature change rate are in a positive correlation relationship.

[0030] Optionally, the step of controlling the rotation speed of the first air fan according to the high-pressure saturation temperature comprises:

[0031] The rotation speed of the first air fan is in positive correlation with the high-pressure saturation temperature.

[0032] Optionally, the step of controlling the rotation speed of the first air fan according to the high-pressure saturation temperature is performed every second time length.

[0033] Optionally, the step of obtaining the high-pressure saturation temperature according to the temperature of the first heat exchanger comprises:

[0034] The high-pressure saturation temperature is calculated according to the following formula:

[0035] Tb = Ta + K

[0036] Wherein, Tb is the high-pressure saturation temperature;

[0037] Ta is the temperature of the first heat exchanger;

[0038] K is a correction value.

[0039] Optionally, the step of obtaining the temperature threshold according to the ambient temperature comprises:

[0040] The temperature threshold is calculated according to the following formula:

[0041] Y = a * Tc - b

[0042] Wherein, Y is the temperature threshold;

[0043] a is a preset coefficient;

[0044] b is a preset value;

[0045] Tc is the ambient temperature.

[0046] Optionally, the air conditioner further comprises a second heat exchanger;

[0047] When the first heat exchanger is an outdoor heat exchanger and the first air fan is an outdoor air fan, the second heat exchanger is an indoor heat exchanger;

[0048] When the first heat exchanger is an indoor heat exchanger and the first air fan is an indoor air fan, the second heat exchanger is an outdoor heat exchanger.

[0049] Optionally, a defrosting temperature sensor is arranged on the first heat exchanger to obtain the temperature of the first heat exchanger.

[0050] In another aspect, the present application also provides an air conditioner. The air conditioner further comprises a controller, the controller comprising a memory, a processor and a computer program stored in the memory and running on the processor, and when the processor executes the computer program, the steps of the control method of the air conditioner are realized.

[0051] In another aspect, the present application also provides a computer program product. The computer program product comprises a computer program, which, when executed by a processor, realizes the steps of the control method of the air conditioner.

[0052] In the air conditioner, the control method of the air conditioner and the computer program product of the present application, on the one hand, the air conditioner does not install a high-pressure pressure sensor. Compared with the prior art, the present application eliminates the high-pressure pressure sensor, which can significantly reduce the production cost of the air conditioner.

[0053] On the other hand, in the process of defrosting the first heat exchanger, the high-pressure saturation temperature is obtained according to the temperature of the heat exchanger; when the high-pressure saturation temperature is greater than or equal to the temperature threshold, it indicates that the high-pressure pressure is relatively large at this time, and the first fan is started at this time to reduce the temperature of the first heat exchanger, so as to reduce the high-pressure saturation temperature and further reduce the high-pressure pressure. In addition, the present application also adaptively adjusts the rotating speed of the first fan according to the high-pressure saturation temperature, so as to better balance the defrosting effect and the effect of reducing the high-pressure pressure.

[0054] In summary, the present application removes the pressure sensor, which can bring more efficient experience in both production process and user use; and in the defrosting process, the high-pressure pressure is controlled in a reasonable range, without high-pressure fault, effectively avoiding the high-pressure protection or exhaust protection fault of the air conditioner during defrosting, which can effectively defrost and improve the stability of the air conditioner.

[0055] Therefore, the above and other objects, advantages and features of the present application will become more apparent from the following detailed description of some embodiments thereof, when taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0056] Some specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. The same reference numbers in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0057] Figure 1 is a schematic flow chart of the control method of the air conditioner according to an embodiment of the present application;

[0058] Figure 2 is a schematic flow chart of the control method according to an embodiment of the present application;

[0059] Figure 3 This is a schematic flowchart of a control method according to an embodiment of the present invention;

[0060] Figure 4 This is a schematic flowchart of a control method according to an embodiment of the present invention;

[0061] Figure 5 This is a schematic flowchart of a control method according to an embodiment of the present invention;

[0062] Figure 6 This is a schematic flowchart of a control method according to an embodiment of the present invention;

[0063] Figure 7 This is a schematic diagram illustrating the working principle of an air conditioner according to an embodiment of the present invention;

[0064] Figure 8 This is a schematic block diagram of an air conditioner according to an embodiment of the present invention;

[0065] Figure 9 This is a schematic block diagram of a computer program product according to an embodiment of the present invention. Detailed Implementation

[0066] The following reference Figures 1 to 9 This invention describes an air conditioner, an air conditioner control method, and a computer program product according to embodiments of the present invention. The terms "front," "rear," "upper," "lower," "top," "bottom," "inner," "outer," and "lateral," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplification, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0067] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically stated, this indicates that other features are not excluded and may be further included.

[0068] Unless otherwise defined, the terms "set", "mount", "connected", "link", "fixed", "coupled" and the like are to be construed in accordance with their ordinary meanings, for example, "connected" can be a fixed connection, or a releasable connection, or an integral connection; "mechanically connected" or "electrically connected" can be direct connection, or indirect connection through an intermediate medium; "connected" can be internal connection of two elements, or interaction relationship between two elements; unless otherwise defined, the ordinary skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0069] In addition, in the description of the present embodiment, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. That is, in the description of the present embodiment, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" or "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0070] In the description of the present embodiment, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] Figure 1 is a schematic flow chart of a control method of an air conditioner 100 according to an embodiment of the present application, and is combined with Figures 2-9 The embodiment of the present application provides a control method of an air conditioner 100, which can include the following steps:

[0072] S100, when the first heat exchanger meets the defrosting condition, controlling the air conditioner to enter a defrosting mode to defrost the first heat exchanger.

[0073] S200, obtaining the temperature of the first heat exchanger.

[0074] S300, obtaining the high-pressure saturation temperature according to the temperature of the first heat exchanger.

[0075] S400, determining whether the high-pressure saturation temperature is greater than or equal to a temperature threshold value; if yes, executing S500.

[0076] S500, start the first fan, and control the speed of the first fan according to the high pressure saturation temperature.

[0077] On the one hand, the air conditioner in this embodiment does not have a high-pressure sensor. Compared with the prior art, this invention eliminates the need for a high-pressure sensor, significantly reducing the production cost of the air conditioner. On the other hand, during the defrosting process of the first heat exchanger, the high-pressure saturation temperature is obtained based on the temperature of the heat exchanger. When the high-pressure saturation temperature is greater than or equal to the temperature threshold, it indicates that the high-pressure is relatively high. At this time, the first fan is activated to lower the temperature of the first heat exchanger, thereby lowering the high-pressure saturation temperature and thus reducing the high-pressure. Furthermore, this embodiment also adaptively adjusts the speed of the first fan based on the high-pressure saturation temperature, thereby better balancing the defrosting effect and the effect of reducing high-pressure. In other words, by using the control method of this embodiment, the high-pressure can be controlled within a reasonable range, effectively avoiding faults such as high-pressure protection or exhaust protection during defrosting, and improving the stability of the air conditioner.

[0078] In summary, the present invention eliminates the high-pressure sensor, resulting in a more efficient experience in both production processes and user operation; it also prevents high-pressure faults during defrosting, effectively defrosts, and improves the stability of the machine.

[0079] like Figure 2 As shown, in some optional embodiments of the present invention, before step S400, the control method further includes the following steps: S601, obtaining the ambient temperature of the first heat exchanger; S602, obtaining a temperature threshold based on the ambient temperature.

[0080] In this embodiment, the temperature threshold of the high-pressure saturation temperature is obtained based on the ambient temperature of the environment in which the first heat exchanger is located. This is more conducive to the precise control of the first fan, thereby avoiding misjudgment of the high-pressure and maximizing the defrosting effect.

[0081] In some optional embodiments of the present invention, step S502, obtaining a temperature threshold based on the ambient temperature, specifically includes:

[0082] The temperature threshold is calculated using the following formula:

[0083] Y = a * Tc – b

[0084] Where Y is the temperature threshold, a is the preset coefficient, b is the preset value, and Tc is the ambient temperature of the first heat exchanger.

[0085] Preferably, a is -3.35 and b is 0.034. That is, the formula for calculating the temperature threshold is: Y = -3.35 * Tc – 0.034.

[0086] The embodiment provides a specific algorithm for obtaining the temperature threshold according to the ambient temperature. The temperature threshold of the high-pressure saturation temperature can be quickly and accurately obtained by using the embodiment, and the control accuracy can be further improved.

[0087] In some alternative embodiments, the temperature threshold can also be calculated by using other algorithms.

[0088] As shown in the figure, in some alternative embodiments of the application, before the step of controlling the rotation speed of the first air fan according to the high-pressure saturation temperature, the method further comprises the step of: controlling the first air fan to operate at a set rotation speed for a first time length; wherein the set rotation speed is less than the maximum rotation speed value of the first air fan. Figure 3 Preferably, the set rotation speed is a second preset rotation speed value. That is, the set rotation speed is the rotation speed corresponding to the first gear of the first air fan.

[0089] Preferably, the set rotation speed is a second preset rotation speed value. That is, the set rotation speed is the rotation speed corresponding to the first gear of the first air fan.

[0090] As shown in the figure, in some alternative embodiments of the application, the step of controlling the rotation speed of the first air fan according to the high-pressure saturation temperature comprises the following steps:

[0091] Figure 4 S501, obtaining a temperature change rate of the high-pressure saturation temperature according to the high-pressure saturation temperature;

[0092] S501, obtaining a temperature change rate of the high-pressure saturation temperature according to the high-pressure saturation temperature;

[0093] S502, controlling the rotation speed of the first air fan according to the temperature change rate.

[0094] Specifically, the high-pressure saturation temperature is obtained every preset time.

[0095] The calculation formula of the temperature change rate is as follows:

[0096] △Tb=(Tb2-Tb1) / Tb2

[0097] Wherein, △Tb is the temperature change rate, Tb2 is the high-pressure saturation temperature obtained this time, and Tb1 is the high-pressure saturation temperature obtained last time.

[0098] In the embodiment, the rotation speed of the first air fan is controlled according to the temperature change rate of the high-pressure saturation temperature, so that the rotation speed of the first air fan can be adaptively adjusted, and the control accuracy is high.​

[0099] In some optional embodiments of the present application, a mapping relationship table of temperature change rate and preset speed value is pre-stored in the air conditioner.

[0100] As shown in FIG. 5, step S502, controlling the speed of the first fan according to the temperature change rate, comprises the following steps: Figure 5

[0101] S5021, determining the preset speed value corresponding to the current temperature change rate according to the mapping relationship table;

[0102] S5022, controlling the first fan to execute the corresponding preset speed value.

[0103] By setting the mapping relationship table of temperature change rate and preset speed value in advance on the controller of the air conditioner, the speed of the first fan can be quickly and accurately controlled, so that the high pressure can be controlled within a reasonable pressure range, and good defrosting effect can be maintained.

[0104] In some optional embodiments of the present application, a mapping relationship table of temperature change rate-preset gear-preset speed value is pre-stored in the air conditioner.

[0105] S502, controlling the speed of the first fan according to the temperature change rate, comprises the following steps: determining the preset speed value and the preset gear corresponding to the current temperature change rate according to the mapping relationship table; controlling the first fan to execute the corresponding preset speed value and the preset gear.

[0106] Specifically, the mapping relationship table of temperature change rate-preset gear-preset speed value can be shown in Table 1 as follows:

[0107] Table 1

[0108]

[0109]

[0110] As can be seen from Table 1, the smaller the temperature change rate, the smaller the preset speed value corresponding to the first fan. Conversely, the greater the temperature change rate, the greater the preset speed value corresponding to the first fan. The greater the temperature change rate, the faster the high pressure rises, at which time, high speed is adopted to quickly reduce the high pressure, so as to effectively avoid the air conditioner from appearing high pressure protection or exhaust protection failure during defrosting.

[0111] ​In some optional embodiments of the present application, S502, controlling the rotating speed of the first air fan according to the temperature change rate comprises: when the temperature change rate is in a first interval, controlling the first air fan to execute a first rotating speed value; when the temperature change rate is in a second interval, controlling the first air fan to execute a second rotating speed value; when the temperature change rate is in a third interval, controlling the first air fan to execute a third rotating speed value; and when the temperature change rate is in a fourth interval, controlling the first air fan to execute a fourth rotating speed value.

[0112] In the present embodiment, the temperature change rate values corresponding to the first interval, the second interval, the third interval and the fourth interval gradually increase, and the first rotating speed value < the second rotating speed value < the third rotating speed value < the fourth rotating speed value. By using the method of the present embodiment, the rotating speed of the first air fan can be accurately controlled, so that the defrosting effect and the effect of reducing the high-pressure pressure can be better balanced.

[0113] In some optional embodiments of the present application, the rotating speed of the first air fan is positively correlated with the temperature change rate. By using the method of the present embodiment, the rotating speed of the first air fan can be accurately controlled, so that the defrosting effect and the effect of reducing the high-pressure pressure can be better balanced.

[0114] In some optional embodiments of the present application, the rotating speed of the first air fan is positively correlated with the high-pressure saturation temperature. By using the method of the present embodiment, the rotating speed of the first air fan can be accurately controlled, so that the defrosting effect and the effect of reducing the high-pressure pressure can be better balanced.

[0115] In some optional embodiments of the present application, the step of controlling the rotating speed of the first air fan according to the high-pressure saturation temperature is executed once every second time length. The second time length can be set according to requirements. Preferably, the second time length is 3s-10s. More preferably, the second time length is 5s.

[0116] In some optional embodiments of the present application, the high-pressure saturation temperature is obtained according to the temperature of the first heat exchanger, comprising:

[0117] The high-pressure saturation temperature is calculated according to the following formula:

[0118] Tb = Ta + K

[0119] In the present embodiment, Tb is the high-pressure saturation temperature, Ta is the temperature of the first heat exchanger, and K is a correction value.

[0120] Preferably, -2≤K≤2. For example, K can be any one of -2, -1, 0, 1 and 2.

[0121] The present embodiment provides a specific method for simulating the high-pressure saturation temperature according to the temperature of the first heat exchanger. By using the above method, the high-pressure saturation temperature can be quickly and accurately obtained, so that the control accuracy can be improved.

[0122] In some alternative embodiments of the present application, the air conditioner further comprises a second heat exchanger and a second fan.

[0123] When the first heat exchanger is an outdoor heat exchanger and the first fan is an outdoor fan, the second heat exchanger is an indoor heat exchanger and the second fan is an indoor fan.

[0124] When the first heat exchanger is an indoor heat exchanger and the first fan is an indoor fan, the second heat exchanger is an outdoor heat exchanger and the second fan is an outdoor fan.

[0125] That is, when the outdoor heat exchanger meets the defrosting condition, the air conditioner is controlled to defrost the outdoor heat exchanger. When the indoor heat exchanger meets the defrosting condition, the air conditioner is controlled to defrost the indoor heat exchanger. The control method of the present embodiment is applicable to defrosting both the outdoor heat exchanger and the indoor heat exchanger.

[0126] In some alternative embodiments of the present application, a defrosting temperature sensor is arranged on the first heat exchanger to obtain the temperature of the first heat exchanger. In the present embodiment, the temperature of the surface of the first heat exchanger can be obtained during defrosting of the first heat exchanger by arranging the defrosting temperature sensor on the first heat exchanger.

[0127] In some alternative embodiments of the present application, the air conditioner 100 can be a wall-mounted air conditioner or a cabinet air conditioner or a multi-connected air conditioner or a central air conditioner.

[0128] In some alternative embodiments of the present application, as shown in Figure 7 The air conditioner comprises a compressor 120, an outdoor heat exchanger 140, an outdoor fan and an indoor heat exchanger 150. The exhaust port side of the compressor 120 is provided with a high-pressure pressure switch 160, and a defrosting temperature sensor 130 is arranged on the distribution pipe of the outdoor heat exchanger 140 to obtain the temperature of the outdoor heat exchanger 140 during defrosting. The outdoor heat exchanger is the first heat exchanger and the outdoor fan is the first fan. The air conditioner has a pre-stored mapping relationship table of temperature change rate-pre-set gear-pre-set speed value.

[0129] As shown in Figure 6 A control method of an air conditioner comprises the following steps:

[0130] S1, when the outdoor heat exchanger meets the defrosting condition, the air conditioner is controlled to enter a defrosting mode to defrost the outdoor heat exchanger;

[0131] S2, obtaining the temperature of the outdoor heat exchanger;

[0132] S3, obtaining the high-pressure saturated temperature according to the temperature of the outdoor heat exchanger;

[0133] S4, acquire the ambient temperature where the outdoor heat exchanger is located to obtain an outdoor ambient temperature;

[0134] S5, acquire the temperature threshold according to the formula Y=-3.35*Tc-0.034; wherein Y is the temperature threshold, and Tc is the ambient temperature where the outdoor heat exchanger is located;

[0135] S6, determine whether the high-pressure saturation temperature is greater than or equal to the temperature threshold; if yes, execute S7; if no, execute S2;

[0136] S7, start the outdoor fan and control the outdoor fan to operate at the speed corresponding to the first gear;

[0137] S8, after the first time length, acquire the temperature change rate of the high-pressure saturation temperature every preset time;

[0138] S9, determine the preset speed value and the preset gear corresponding to the current temperature change rate according to the mapping relationship table of the temperature change rate-preset gear-preset speed value;

[0139] S10, control the outdoor fan to execute the corresponding preset speed value and preset gear;

[0140] S11, determine whether the defrosting exit condition is met; if yes, execute S12; if no, execute S8.

[0141] S12, control the air conditioner to exit the defrosting mode.

[0142] Since the high and low pressure sensors are high in cost and have a certain error range, the high and low pressure sensors are removed in the embodiment, which can bring a more efficient experience in terms of production process and user use; and after the high and low pressure sensors are removed, no high pressure fault is reported in the defrosting process, the defrosting can be effectively performed, and the stability of the machine is improved.

[0143] As shown in Figure 8 The embodiment of the present application also provides an air conditioner 100, which further comprises a controller 110, the controller 110 comprises a memory 111, a processor 112 and a computer program 210 stored in the memory 111 and running on the processor 112, and when the processor 112 executes the computer program 210, the steps of the control method of the air conditioner 100 of any embodiment or embodiment combination are realized.

[0144] The controller 110 can be directly arranged in the air conditioner 100, wiredly connected with the related electrical elements of the air conditioner 100, and realize the steps of the control method of the air conditioner 100. The controller can also be arranged on a cloud server, wiredly or wirelessly connected with the related electrical elements of the air conditioner 100, and realize the steps of the control method of the air conditioner 100.

[0145] The air conditioner 100 can be a household air conditioner, a central air conditioner, a multi-split air conditioner, etc.

[0146] Further, the air conditioner further comprises a compressor 120 and a defrosting temperature sensor 130.

[0147] In some embodiments of the computer program product of the present application, as shown in Figure 9 The computer program product 200 comprises a computer program 210 which, when executed by the processor 112, implements the steps of any of the control methods of the air conditioner 100 described above.

[0148] The computer program 210 for performing the operations of the present application can be in assemblies instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine dependent instructions, microcode, firmware instructions, state setting data, configuration data for integrated circuits, or in source code or object code written in any combination of one or more programming languages and processes, either at one time or at different times. The computer program 210 can be executed completely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or completely on a remote computer or server. In the latter case, the remote computer can be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or can be connected to an external computer (for example, through the Internet using an Internet Service Provider). In some embodiments, in order to execute aspects of the present application, electronic circuits, including for example programmable logic circuits, Field-Programmable Gate Arrays (FPGA) or Programmable Logic Arrays (PLA), can execute computer readable program instructions by utilizing state information of the computer readable program instructions to individualize the electronic circuits.

[0149] For the description of the present embodiment, the computer program product 200 is a relevant product comprising the computer program 210.

[0150] The computer program 210 can be stored in a computer readable storage medium.

[0151] It is to be appreciated that the logical and / or steps represented in the flow diagrams, or otherwise described herein, can be considered as a sequence of executable instructions, for example, that can be implemented in any computer-readable storage medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor- containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions, or a combination thereof.

[0152] For the description of the present embodiments, the computer readable storage medium can be any apparatus that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer readable storage medium include the following: an electrical connection having one or more wires (electrical apparatus), a portable computer diskette (magnetic apparatus), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber (optical apparatus), and a portable compact disc read-only memory (CDROM). In addition, the computer readable storage medium can even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, for example, via an optical scanner, then compiled, interpreted, or otherwise processed, and stored in a computer memory in order to be executed.

[0153] The flow diagrams provided by the present embodiments are not intended to indicate that the operations of the methods will be executed in any particular order, or that all of the operations of the methods will be included in every case. In addition, the methods can include additional operations. Additional changes can be made to the above-described methods within the scope of the technical ideas provided by the present embodiments.

[0154] The scope of the present application should be understood and appreciated to include all such additional changes without departing from the spirit and scope of the present application.

Claims

1. A control method of an air conditioner, characterized by, The method comprises: in response to the first heat exchanger meeting a defrosting condition, controlling the air conditioner to enter a defrosting mode; obtaining a temperature of the first heat exchanger; obtaining a high-pressure saturation temperature according to the temperature of the first heat exchanger; determining whether the high-pressure saturation temperature is greater than or equal to a temperature threshold value; if yes, starting a first fan and controlling a rotating speed of the first fan according to the high-pressure saturation temperature.

2. The control method according to claim 1, characterized by, Further comprising: obtaining an ambient temperature in which the first heat exchanger is located; obtaining the temperature threshold value according to the ambient temperature.

3. The control method according to claim 1, wherein, before the step of controlling the rotating speed of the first fan according to the high-pressure saturation temperature, the method further comprises: controlling the first fan to operate at a set rotating speed for a first time length, wherein the set rotating speed is less than a maximum rotating speed value of the first fan.

4. The control method according to claim 1, wherein, the step of controlling the rotating speed of the first fan according to the high-pressure saturation temperature comprises: obtaining a temperature change rate of the high-pressure saturation temperature according to the high-pressure saturation temperature; and controlling the rotating speed of the first fan according to the temperature change rate.

5. The control method according to claim 4, wherein, a mapping relationship table of temperature change rates and preset rotating speed values is pre-stored in the air conditioner; and the step of controlling the rotating speed of the first fan according to the temperature change rate comprises: determining a preset rotating speed value corresponding to the current temperature change rate according to the mapping relationship table; and controlling the first fan to execute the corresponding preset rotating speed value.

6. The control method according to claim 4, wherein, the step of controlling the rotating speed of the first fan according to the temperature change rate comprises: in response to the temperature change rate being in a first interval, controlling the first fan to execute a first rotating speed value; in response to the temperature change rate being in a second interval, controlling the first fan to execute a second rotating speed value; in response to the temperature change rate being in a third interval, controlling the first fan to execute a third rotating speed value; in response to the temperature change rate being in a fourth interval, controlling the first fan to execute a fourth rotating speed value; wherein the temperature change rate values corresponding to the first interval, the second interval, the third interval and the fourth interval gradually increase, and the first rotating speed value < the second rotating speed value < the third rotating speed value < the fourth rotating speed value.

7. The control method according to claim 4, wherein, the rotating speed of the first fan and the temperature change rate are in a positive correlation.

8. The control method according to claim 1, wherein, the step of controlling the rotating speed of the first fan according to the high-pressure saturation temperature comprises: the rotating speed of the first fan and the high-pressure saturation temperature are in a positive correlation.

9. The control method according to claim 1, wherein, the step of controlling the rotating speed of the first fan according to the high-pressure saturation temperature is executed once every second time length.

10. The control method according to claim 1, wherein, the step of obtaining the high-pressure saturation temperature according to the temperature of the first heat exchanger comprises: ​ ​ ​ ​ ​ ​ ​ ​ ​ The high-pressure saturation temperature is calculated according to the following formula: Tb = Ta + K wherein Tb is the high-pressure saturation temperature; Ta is the temperature of the first heat exchanger; K is a correction value.

11. The control method according to claim 2, wherein the temperature threshold is obtained according to the ambient temperature, comprising: the temperature threshold is calculated according to the following formula: Y = a * Tc - b wherein Y is the temperature threshold; a is a preset coefficient; b is a preset value; Tc is the ambient temperature.

12. The control method according to claim 1, wherein the air conditioner further comprises a second heat exchanger; when the first heat exchanger is an outdoor heat exchanger and the first fan is an outdoor fan, the second heat exchanger is an indoor heat exchanger; when the first heat exchanger is an indoor heat exchanger and the first fan is an indoor fan, the second heat exchanger is an outdoor heat exchanger.

13. The control method according to claim 1, wherein a defrosting temperature sensor is arranged on the first heat exchanger to obtain the temperature of the first heat exchanger.

14. An air conditioner characterized by comprising: a controller comprising a memory, a processor and a computer program stored in the memory and running on the processor, and when the processor executes the computer program, the steps of the control method of the air conditioner according to any one of claims 1 to 13 are implemented.

15. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the control method of the air conditioner according to any one of claims 1 to 13.

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