Control Method and Control Device for Air Conditioner

Abstract

The present invention provides a control method and a control device for an air conditioner. The air conditioner includes a compressor, an evaporator, a blower for causing air flow to pass through the evaporator, and an electric heater on the downstream side of the evaporator. Among them, the control method of the air conditioner includes: when the air conditioner is in the cooling mode or the dehumidification mode, determining whether the ambient humidity value is greater than or equal to a first preset humidity value; if the ambient humidity value is greater than or equal to the first preset humidity value, determining a target continuous operation duration of the compressor and a target continuous activation duration of the electric heater according to the rotational speed of the blower and the frequency of the compressor; when the continuous operation duration of the compressor reaches the target continuous operation duration, activating the electric heater until the electric heater is activated for the target continuous activation duration. The control method and the control device for the air conditioner provided by the present invention can prevent condensation from occurring on the surface of the electric heater in the air conditioner and improve the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and particularly to a control method and a control device for an air conditioner. Background Art

[0002] The electric heater is a main component of the air conditioner and can effectively improve the heating effect. The evaporator, the fan and the electric heater are all arranged in the heat exchange air duct of the air conditioner. Under the action of the fan, the cold air in the room is discharged outside the air conditioner after being heated by the electric heater. However, affected by the structures of the evaporator, the fan and the electric heating structure, the wind-blown areas on both sides of the electric heater are different, which leads to different surface temperatures of the electric heater. In the cooling mode or the dehumidifying mode, due to the different surface temperatures of the electric heater, condensation is likely to occur on the surface of the electric heater. As time goes by, the condensation gradually increases. When the condensation increases to a certain extent, it will be blown out from the air conditioner, affecting the user experience. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide an anti-condensation control method and a control device for an air conditioner that can overcome or at least partially solve the above problems, and can prevent condensation from occurring on the surface of the electric heater in the air conditioner, improving the user experience.

[0004] Specifically, the present invention provides a control method for an air conditioner, where the air conditioner includes a compressor, an evaporator, a fan that causes air flow to pass through the evaporator, and an electric heater on the downstream side of the evaporator. Among them,

[0005] The control method of the air conditioner includes:

[0006] When the air conditioner is in the cooling mode or the dehumidifying mode, determine whether the ambient humidity value is greater than or equal to a first preset humidity value;

[0007] If the ambient humidity value is greater than or equal to the first preset humidity value, determine the target continuous operation duration of the compressor and the target continuous opening duration of the electric heater according to the rotation speed of the fan and the frequency of the compressor;

[0008] When the continuous operation duration of the compressor reaches the target continuous operation duration, turn on the electric heater until the electric heater is turned on for the target continuous opening duration.

[0009] Optionally, determining the target continuous operation duration of the compressor and the target continuous opening duration of the electric heater according to the rotation speed of the fan and the frequency of the compressor includes:

[0010] Determine the target continuous operation duration of the compressor and the target continuous activation duration of the electric heater according to the relationship table among the rotational speed of the fan, the frequency of the compressor, the target continuous operation duration of the compressor, and the target continuous activation duration of the electric heater;

[0011] In the relationship table:

[0012] When the rotational speed of the fan and the frequency of the compressor are the same, the larger the value of the humidity range where the ambient humidity value is located, the shorter the target continuous operation duration and the longer the target continuous activation duration;

[0013] When the ambient humidity value and the frequency of the compressor are the same, the larger the value of the rotational speed range where the rotational speed of the fan is located, the longer the target continuous operation duration and the shorter the target continuous activation duration;

[0014] When the rotational speed of the fan and the ambient humidity value are the same, the larger the value of the frequency range where the frequency of the compressor is located, the shorter the target continuous operation duration and the longer the target continuous activation duration.

[0015] Optionally, the humidity range includes a first humidity range where the ambient humidity value is greater than or equal to the first preset humidity value and less than the second preset humidity value, a second humidity range where the ambient humidity value is greater than or equal to the second preset humidity value and less than the third preset humidity value, and a third humidity range where the ambient humidity value is greater than or equal to the third preset humidity value;

[0016] The rotational speed range includes a first rotational speed range and a second rotational speed range, and the rotational speed of the fan in the second rotational speed range is greater than the rotational speed of the fan in the first rotational speed range;

[0017] The frequency range includes a first frequency range less than the preset frequency and a second frequency range greater than or equal to the preset frequency.

[0018] Optionally, when the ambient humidity value is in the first humidity range:

[0019] When the rotational speed of the fan is in the first rotational speed range and the frequency of the compressor is in the first frequency range, the target continuous operation duration of the compressor is the first preset duration, and the target continuous activation duration of the electric heater is the first activation duration;

[0020] When the rotational speed of the fan is in the first rotational speed range and the frequency of the compressor is in the second frequency range, the target continuous operation duration of the compressor is the second preset duration, and the target continuous activation duration of the electric heater is the second activation duration;

[0021] When the rotational speed of the blower is within the second rotational speed range and the frequency of the compressor is within the first frequency range, the target continuous operation duration of the compressor is the third preset duration, and the target continuous activation duration of the electric heater is the third activation duration;

[0022] When the rotational speed of the blower is within the second rotational speed range and the frequency of the compressor is within the second frequency range, the target continuous operation duration of the compressor is the fourth preset duration, and the target continuous activation duration of the electric heater is the fourth activation duration.

[0023] Optionally, when the environmental humidity value is within the second humidity range:

[0024] When the rotational speed of the blower is within the first rotational speed range and the frequency of the compressor is within the first frequency range, the target continuous operation duration of the compressor is the first preset duration, and the target continuous activation duration of the electric heater is the fifth activation duration;

[0025] When the rotational speed of the blower is within the first rotational speed range and the frequency of the compressor is within the second frequency range, the target continuous operation duration of the compressor is the second preset duration, and the target continuous activation duration of the electric heater is the sixth activation duration;

[0026] When the rotational speed of the blower is within the second rotational speed range and the frequency of the compressor is within the first frequency range, the target continuous operation duration of the compressor is the third preset duration, and the target continuous activation duration of the electric heater is the seventh activation duration;

[0027] When the rotational speed of the blower is within the second rotational speed range and the frequency of the compressor is within the second frequency range, the target continuous operation duration of the compressor is the fourth preset duration, and the target continuous activation duration of the electric heater is the eighth activation duration.

[0028] Optionally, when the environmental humidity value is within the third humidity range:

[0029] When the rotational speed of the blower is within the first rotational speed range and the frequency of the compressor is within the first frequency range, the operation duration of the compressor is the fifth preset duration, and the target continuous activation duration of the electric heater is the ninth activation duration;

[0030] When the rotational speed of the blower is within the first rotational speed range and the frequency of the compressor is within the second frequency range, the operation duration of the compressor is the sixth preset duration, and the target continuous activation duration of the electric heater is the tenth activation duration;

[0031] When the rotational speed of the blower is within the second rotational speed range and the frequency of the compressor is within the first frequency range, the operating duration of the compressor is the seventh preset duration, and the target continuous on-duration of the electric heater is the eleventh on-duration;

[0032] When the rotational speed of the blower is within the second rotational speed range and the frequency of the compressor is within the second frequency range, the operating duration of the compressor is the eighth preset duration, and the target continuous on-duration of the electric heater is the twelfth on-duration.

[0033] Optionally, the control method of the air conditioner further includes:

[0034] When the electric heater is turned on, the air deflector of the air conditioner is closed or the air deflector starts the non-blowing mode, the compressor is turned off or the frequency of the compressor is reduced so that the compressor operates at a frequency lower than a certain frequency, and the blower is turned off.

[0035] Optionally, the control method of the air conditioner further includes:

[0036] In response to turning off the electric heater, the blower is turned on;

[0037] After the blower is turned on for a preset duration, the air deflector and the compressor return to the preset state or the state before the electric heater is turned on.

[0038] Optionally, the first humidity range is 50% to 70%, the second humidity range is 70% to 90%, and the third humidity range is greater than or equal to 90%;

[0039] The preset frequency is 50HZ, the first frequency range is less than 50HZ, and the second frequency range is greater than or equal to 50HZ;

[0040] The first preset duration is 175 minutes to 185 minutes, the second preset duration is 115 minutes to 125 minutes, the third preset duration is 295 minutes to 305 minutes, the fourth preset duration is 235 minutes to 245 minutes, the fifth preset duration is 55 minutes to 65 minutes, the sixth preset duration is 45 minutes to 55 minutes, the seventh preset duration is 115 minutes to 125 minutes, and the eighth preset duration is 55 minutes to 65 minutes;

[0041] The first opening duration is from 25 s to 35 s, the second opening duration is from 55 s to 65 s, the third opening duration is from 25 s to 35 s, the fourth opening duration is from 45 s to 55 s, the fifth opening duration is from 35 s to 45 s, the sixth opening duration is from 65 s to 75 s, the seventh opening duration is from 35 s to 45 s, the eighth opening duration is from 55 s to 65 s, the ninth opening duration is from 35 s to 45 s, the tenth opening duration is from 85 s to 90 s, the eleventh opening duration is from 35 s to 45 s, and the twelfth opening duration is from 65 s to 75 s;

[0042] The preset duration is from 38 s to 42 s.

[0043] The present invention also provides a control device for an air conditioner, including a processor and a memory. A computer program for execution on the processor is stored on the memory. When the processor executes the computer program, the control method of the air conditioner described in any one of the above is implemented.

[0044] In the control method and control device of the air conditioner of the present invention, the target continuous operation duration of the compressor is determined according to the rotational speed of the blower and the frequency of the compressor. When the continuous operation duration of the compressor reaches the target continuous operation duration, the electric heater is turned on, which can effectively prevent condensation on the surface of the electric heater and improve the user experience.

[0045] Based on the following detailed description of specific embodiments of the present invention in conjunction with the drawings, those skilled in the art will more clearly understand the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the drawings in an exemplary and non-limiting manner. The same reference numerals in the drawings denote 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:

[0047] Figure 1 is a schematic flow chart of a control method of an air conditioner according to an embodiment of the present invention;

[0048] Figure 2 is a schematic flow chart of a control method of an air conditioner according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0049] The following refers to Figures 1 to 2To describe the control method and control device of an air conditioner according to an embodiment of the present invention. In the description of this embodiment, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features, that is, include one or more of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. When a certain feature "includes or contains" a certain or certain features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0050] Unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. Those of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0051] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but in contact through other features between them. That is, in the description of this embodiment, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "beneath", or "under" the second feature may be the first feature being directly below or obliquely below the second feature, or simply indicating that the first feature is at a lower horizontal height than the second feature.

[0052] In the description of this embodiment, the description with reference to terms such as "an embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" 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 invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0053] Figure 1 is a schematic flowchart of the control method of an air conditioner according to an embodiment of the present invention, asFigure 1 as shown in and with reference to Figure 2 , an embodiment of the present invention provides a control method for an air conditioner. The air conditioner includes a compressor, an evaporator, a blower for causing air flow to pass through the evaporator, and an electric heater on the downstream side of the evaporator. Among them,

[0054] as Figure 1 shown, the control method for the air conditioner includes:

[0055] Step S1: When the air conditioner is in the cooling mode or the dehumidifying mode, determine whether the ambient humidity value is greater than or equal to a first preset humidity value;

[0056] Step S2: If the ambient humidity value is greater than or equal to the first preset humidity value, determine the target continuous operation duration of the compressor and the target continuous on duration of the electric heater according to the rotational speed of the blower and the frequency of the compressor;

[0057] Step S3: When the continuous operation duration of the compressor reaches the target continuous operation duration, turn on the electric heater until the electric heater is turned on for the target continuous on duration, that is, after the electric heater is turned on for the target continuous on duration, turn off the electric heater.

[0058] In the above step S1, the ambient humidity value can be detected by a humidity sensor provided on the indoor unit of the air conditioner. When the ambient humidity value is less than the first preset humidity value, the air conditioner does not enter the control method in this embodiment.

[0059] In the above step S2, the frequency of the compressor and the rotational speed of the blower can be obtained by the control device of the air conditioner. The ambient humidity value, the frequency of the compressor, and the rotational speed of the blower all affect the formation of surface condensation on the electric heater. Therefore, the turning-on time of the electric heater can be determined through the above parameters to achieve the purpose of preventing condensation. The electric heater can be a PTC electric heater, and the PTC electric heater has advantages such as high heat transfer efficiency, automatic constant temperature, energy saving and power saving.

[0060] In the control method for the air conditioner according to the embodiment of the present invention, the target continuous operation duration of the compressor is determined according to the rotational speed of the blower and the frequency of the compressor, and when the continuous operation duration of the compressor reaches the target continuous operation duration, the electric heater is turned on, which can effectively prevent surface condensation on the electric heater and improve the user experience.

[0061] In some embodiments of the present invention, the electric heater includes an electric heating element and two electrode strips. One end of each of the two electrode strips is electrically connected to the electric heating element, and the other end is electrically connected to a power supply device to supply power to the electric heating element. Before this application, the electrode strips were large in size and had no insulation protection. When the environmental humidity was high, water vapor easily entered between the two electrode strips, resulting in insufficient electrical clearance and causing problems with the electric heater. In this embodiment, the two electrode strips are small in size, and high-temperature insulation sheaths are sleeved on both of the two electrode strips, which can prevent water vapor from entering between the two electrode strips, improving the safety performance and service life of the electric heater.

[0062] In some embodiments of the present invention, determining the target continuous operation duration of the compressor and the target continuous on duration of the electric heater according to the rotational speed of the fan and the frequency of the compressor includes:

[0063] Step S21: Determine the target continuous operation duration of the compressor and the target continuous on duration of the electric heater according to the relationship table between the rotational speed of the fan, the frequency of the compressor, the target continuous operation duration of the compressor, and the target continuous on duration of the electric heater;

[0064] Specifically, in the relationship table:

[0065] When the rotational speed of the fan and the frequency of the compressor are the same, the larger the value of the humidity range where the environmental humidity value is located, the shorter the target continuous operation duration, and the longer the target continuous on duration;

[0066] When the environmental humidity value and the frequency of the compressor are the same, the larger the value of the rotational speed range where the rotational speed of the fan is located, the longer the target continuous operation duration, and the shorter the target continuous on duration;

[0067] When the rotational speed of the fan and the environmental humidity value are the same, the larger the value of the frequency range where the frequency of the compressor is located, the shorter the target continuous operation duration, and the longer the target continuous on duration.

[0068] In some embodiments of the present invention, the humidity ranges include a first humidity range where the environmental humidity value is greater than or equal to a first preset humidity value and less than a second preset humidity value, a second humidity range where the environmental humidity value is greater than or equal to the second preset humidity value and less than a third preset humidity value, and a third humidity range where the environmental humidity value is greater than or equal to the third preset humidity value. For example, the first humidity range is from 50% to 70%, the second humidity range is from 70% to 90%, and the first humidity range is greater than 90%.

[0069] The rotational speed ranges include a first rotational speed range and a second rotational speed range. The rotational speed of the fan in the second rotational speed range is greater than that of the fan in the first rotational speed range. That is to say, the first rotational speed range is a low rotational speed range, and the second rotational speed range is a medium-high rotational speed range.

[0070] The frequency range includes a first frequency range less than a preset frequency and a second frequency range greater than or equal to the preset frequency. For example, if the preset frequency is 50HZ, the frequency of the compressor in the first frequency range is less than 50HZ, and the frequency of the compressor in the second frequency range is greater than or equal to 50HZ.

[0071] In some embodiments of the present invention, when the ambient humidity value is in the first humidity range:

[0072] When the rotational speed of the fan is in the first rotational speed range and the frequency of the compressor is in the first frequency range, the target continuous operation duration of the compressor is the first preset duration, and the target continuous on duration of the electric heater is the first on duration. For example, the first preset duration is 175 minutes to 185 minutes, preferably 180 minutes. The first on duration is 25s to 35s, preferably 30s.

[0073] When the rotational speed of the fan is in the first rotational speed range and the frequency of the compressor is in the second frequency range, the target continuous operation duration of the compressor is the second preset duration, and the target continuous on duration of the electric heater is the second on duration. For example, the second preset duration is 115 minutes to 125 minutes, preferably 120 minutes. The second on duration is 55s to 65s, preferably 60s.

[0074] When the rotational speed of the fan is in the second rotational speed range and the frequency of the compressor is in the first frequency range, the target continuous operation duration of the compressor is the third preset duration, and the target continuous on duration of the electric heater is the third on duration. For example, the third preset duration is 295 minutes to 305 minutes, preferably 300 minutes. The third on duration is 55s to 65s, preferably 60s.

[0075] When the rotational speed of the fan is in the second rotational speed range and the frequency of the compressor is in the second frequency range, the target continuous operation duration of the compressor is the fourth preset duration, and the target continuous on duration of the electric heater is the fourth on duration. For example, the fourth preset duration is 235 minutes to 245 minutes, preferably 240 minutes. The fourth on duration is 45s to 55s, preferably 50s.

[0076] In some embodiments of the present invention, when the ambient humidity value is in the second humidity range:

[0077] When the rotational speed of the fan is in the first rotational speed range and the frequency of the compressor is in the first frequency range, the target continuous operation duration of the compressor is the first preset duration, and the target continuous on duration of the electric heater is the fifth on duration. The fifth on duration is 35s to 45s, preferably 40s.

[0078] When the rotational speed of the fan is within the first rotational speed range and the frequency of the compressor is within the second frequency range, the target continuous operation duration of the compressor is the second preset duration, and the target continuous activation duration of the electric heater is the sixth activation duration. The sixth activation duration is from 65 s to 75 s, preferably 70 s.

[0079] When the rotational speed of the fan is within the second rotational speed range and the frequency of the compressor is within the first frequency range, the target continuous operation duration of the compressor is the third preset duration, and the target continuous activation duration of the electric heater is the seventh activation duration. The seventh activation duration is from 35 s to 45 s, preferably 40 s.

[0080] When the rotational speed of the fan is within the second rotational speed range and the frequency of the compressor is within the second frequency range, the target continuous operation duration of the compressor is the fourth preset duration, and the target continuous activation duration of the electric heater is the eighth activation duration. The eighth activation duration is from 55 s to 65 s, preferably 60 s.

[0081] In some embodiments of the present invention, when the ambient humidity value is within the third humidity range:

[0082] When the rotational speed of the fan is within the first rotational speed range and the frequency of the compressor is within the first frequency range, the operation duration of the compressor is the fifth preset duration, and the target continuous activation duration of the electric heater is the ninth activation duration. For example, the fifth preset duration is from 55 minutes to 65 minutes, preferably 60 minutes. The ninth activation duration is from 35 s to 45 s, preferably 40 s.

[0083] When the rotational speed of the fan is within the first rotational speed range and the frequency of the compressor is within the second frequency range, the operation duration of the compressor is the sixth preset duration, and the target continuous activation duration of the electric heater is the tenth activation duration. For example, the sixth preset duration is from 45 minutes to 55 minutes, preferably 50 minutes. The tenth activation duration is from 85 s to 95 s, preferably 90 s.

[0084] When the rotational speed of the fan is within the second rotational speed range and the frequency of the compressor is within the first frequency range, the operation duration of the compressor is the seventh preset duration, and the target continuous activation duration of the electric heater is the eleventh activation duration. For example, the seventh preset duration is from 115 minutes to 125 minutes, preferably 120 minutes. The eleventh activation duration is from 35 s to 45 s, preferably 40 s.

[0085] When the rotational speed of the fan is within the second rotational speed range and the frequency of the compressor is within the second frequency range, the operation duration of the compressor is the eighth preset duration, and the target continuous activation duration of the electric heater is the twelfth activation duration. For example, the eighth preset duration is from 55 minutes to 65 minutes, preferably 60 minutes. The twelfth activation duration is from 65 s to 75 s, preferably 70 s.

[0086] In some embodiments of the present invention, as Figure 2 shown, the control method of the air conditioner further includes:

[0087] Step S4: When the electric heater is turned on, close the air deflector of the air conditioner or start the air deflector in a non-blowing mode, turn off the compressor or reduce the frequency of the compressor so that the compressor operates at a frequency lower than a certain frequency, and turn off the blower.

[0088] When the electric heater is turned on, the electric heater will generate a large amount of heat. If the blower is not turned off, the hot air will blow out from the air conditioner, causing the indoor temperature to rise and making the user uncomfortable. Moreover, when the hot air blows directly at the user, the hot air may scald the user, resulting in losses. Therefore, the air deflector can be started in a non-blowing mode, adjusting the angle of the air deflector to blow the air to other positions without blowing directly at people. For example, the air can be blown forward and upward. Of course, the air deflector can also be closed. Reducing the compressor frequency is also beneficial to the energy saving of the air conditioner. For example, the compressor operates at a frequency lower than 50HZ. Of course, the compressor can also be turned off at this time.

[0089] In some embodiments of the present invention, as Figure 2 shown, the control method of the air conditioner further includes:

[0090] Step S5: In response to turning off the electric heater, turn on the blower;

[0091] Step S6: After the blower is turned on for a preset duration, the air deflector and the compressor are restored to the preset state or the state before the electric heater is turned on.

[0092] In this embodiment, although the electric heater is turned off, there will still be a small amount of residual heat. At this time, if the air deflector and the compressor are directly restored to the preset state or the state before the electric heater is turned on, the residual heat may still be blown out, and condensation will occur when the cold air generated by the refrigeration system meets the hot air. Therefore, turning on the blower first can cool down the electric heater and dissipate the residual heat, avoiding the above situation. For example, the preset duration for turning on the blower is 38s to 42s. Preferably, the preset duration is 40s.

[0093] An embodiment of the present invention further provides a control device for an air conditioner, which includes a processor and a memory. A computer program for execution on the processor is stored on the memory. When the processor executes the computer program, the control method of the air conditioner in any of the above embodiments is implemented. The control device of the air conditioner further includes a communication interface and a communication bus. The processor, the memory, and the communication interface complete mutual communication through the communication bus. The processor is used to provide computing and control capabilities. The memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and computer program instructions. The internal memory provides an environment for the operation of the operating system and computer program instructions in the non-volatile storage medium. The communication interface of the above device is used to communicate with an external terminal in a wired or wireless manner. The wireless manner can be implemented through WIFI, a carrier network, NFC (Near Field Communication), or other technologies.

[0094] At this point, those skilled in the art should recognize that although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and determined to cover all these other variations or modifications.

Claims

1. A control method for an air conditioner, the air conditioner including a compressor, an evaporator, a blower for causing air flow to pass through the evaporator, and an electric heater on the downstream side of the evaporator, wherein, The control method of the air conditioner includes: When the air conditioner is in the cooling mode or the dehumidification mode, determine whether the ambient humidity value is greater than or equal to the first preset humidity value; If the ambient humidity value is greater than or equal to the first preset humidity value, determine the target continuous operation duration of the compressor and the target continuous opening duration of the electric heater according to the rotation speed of the fan and the frequency of the compressor; When the continuous operation duration of the compressor reaches the target continuous operation duration, turn on the electric heater until the electric heater is turned on for the target continuous opening duration; Among them, determining the target continuous operation duration of the compressor and the target continuous opening duration of the electric heater according to the rotation speed of the fan and the frequency of the compressor includes: Determine the target continuous operation duration of the compressor and the target continuous opening duration of the electric heater according to the relationship table between the rotation speed of the fan, the frequency of the compressor, the target continuous operation duration of the compressor, and the target continuous opening duration of the electric heater; In the relationship table: When the rotation speed of the fan and the frequency of the compressor are the same, the larger the value of the humidity interval where the ambient humidity value is located, the shorter the target continuous operation duration, and the longer the target continuous opening duration; When the ambient humidity value and the frequency of the compressor are the same, the larger the value of the rotation speed interval where the rotation speed of the fan is located, the longer the target continuous operation duration, and the shorter the target continuous opening duration; When the rotation speed of the fan and the ambient humidity value are the same, the larger the value of the frequency interval where the frequency of the compressor is located, the shorter the target continuous operation duration, and the longer the target continuous opening duration.

2. The control method for an air conditioner according to claim 1, wherein, The humidity interval includes a first humidity interval where the ambient humidity value is greater than or equal to the first preset humidity value and less than the second preset humidity value, a second humidity interval where the ambient humidity value is greater than or equal to the second preset humidity value and less than the third preset humidity value, and a third humidity interval where the ambient humidity value is greater than or equal to the third preset humidity value; The rotation speed interval includes a first rotation speed interval and a second rotation speed interval, and the rotation speed of the fan in the second rotation speed interval is greater than the rotation speed of the fan in the first rotation speed interval; The frequency interval includes a first frequency interval less than the preset frequency and a second frequency interval greater than or equal to the preset frequency.

3. The control method for an air conditioner according to claim 2, wherein, When the ambient humidity value is in the first humidity interval: When the rotation speed of the fan is in the first rotation speed interval and the frequency of the compressor is in the first frequency interval, the target continuous operation duration of the compressor is the first preset duration, and the target continuous opening duration of the electric heater is the first opening duration; When the rotation speed of the fan is in the first rotation speed interval and the frequency of the compressor is in the second frequency interval, the target continuous operation duration of the compressor is the second preset duration, and the target continuous opening duration of the electric heater is the second opening duration; When the rotational speed of the blower is within the second rotational speed range and the frequency of the compressor is within the first frequency range, the target continuous operation duration of the compressor is the third preset duration, and the target continuous activation duration of the electric heater is the third activation duration; When the rotational speed of the blower is within the second rotational speed range and the frequency of the compressor is within the second frequency range, the target continuous operation duration of the compressor is the fourth preset duration, and the target continuous activation duration of the electric heater is the fourth activation duration.

4. The control method for an air conditioner according to claim 3, wherein, When the environmental humidity value is within the second humidity range: When the rotational speed of the blower is within the first rotational speed range and the frequency of the compressor is within the first frequency range, the target continuous operation duration of the compressor is the first preset duration, and the target continuous activation duration of the electric heater is the fifth activation duration; When the rotational speed of the blower is within the first rotational speed range and the frequency of the compressor is within the second frequency range, the target continuous operation duration of the compressor is the second preset duration, and the target continuous activation duration of the electric heater is the sixth activation duration; When the rotational speed of the blower is within the second rotational speed range and the frequency of the compressor is within the first frequency range, the target continuous operation duration of the compressor is the third preset duration, and the target continuous activation duration of the electric heater is the seventh activation duration; When the rotational speed of the blower is within the second rotational speed range and the frequency of the compressor is within the second frequency range, the target continuous operation duration of the compressor is the fourth preset duration, and the target continuous activation duration of the electric heater is the eighth activation duration.

5. The control method for an air conditioner according to claim 4, wherein, When the environmental humidity value is within the third humidity range: When the rotational speed of the blower is within the first rotational speed range and the frequency of the compressor is within the first frequency range, the operation duration of the compressor is the fifth preset duration, and the target continuous activation duration of the electric heater is the ninth activation duration; When the rotational speed of the blower is within the first rotational speed range and the frequency of the compressor is within the second frequency range, the operation duration of the compressor is the sixth preset duration, and the target continuous activation duration of the electric heater is the tenth activation duration; When the rotational speed of the blower is within the second rotational speed range and the frequency of the compressor is within the first frequency range, the operation duration of the compressor is the seventh preset duration, and the target continuous activation duration of the electric heater is the eleventh activation duration; When the rotational speed of the blower is within the second rotational speed range and the frequency of the compressor is within the second frequency range, the operation duration of the compressor is the eighth preset duration, and the target continuous activation duration of the electric heater is the twelfth activation duration.

6. The control method for an air conditioner according to claim 1, further comprising: When the electric heater is activated, the air deflector of the air conditioner is closed or the air deflector starts the non-blowing-to-people air supply mode, the compressor is closed or the frequency of the compressor is reduced so that the compressor operates at a frequency lower than a certain frequency, and the blower is closed.

7. The control method of the air conditioner according to claim 6 further includes: In response to the closing of the electric heater, the blower is activated; After the fan is turned on for a preset duration, the air deflector and the compressor return to the preset state or the state before the electric heater is turned on.

8. The control method of the air conditioner according to claim 5, wherein The first humidity range is 50% to 70%, the second humidity range is 70% to 90%, and the third humidity range is greater than or equal to 90%; The preset frequency is 50HZ, the first frequency range is less than 50HZ, and the second frequency range is greater than or equal to 50HZ; The first preset duration is 175 minutes to 185 minutes, the second preset duration is 115 minutes to 125 minutes, the third preset duration is 295 minutes to 305 minutes, the fourth preset duration is 235 minutes to 245 minutes, the fifth preset duration is 55 minutes to 65 minutes, the sixth preset duration is 45 minutes to 55 minutes, the seventh preset duration is 115 minutes to 125 minutes, and the eighth preset duration is 55 minutes to 65 minutes; The first opening duration is 25s to 35s, the second opening duration is 55s to 65s, the third opening duration is 25s to 35s, the fourth opening duration is 45s to 55s, the fifth opening duration is 35s to 45s, the sixth opening duration is 65s to 75s, the seventh opening duration is 35s to 45s, the eighth opening duration is 55s to 65s, the ninth opening duration is 35s to 45s, the tenth opening duration is 85s to 90s, the eleventh opening duration is 35s to 45s, and the twelfth opening duration is 65s to 75s; The preset duration is 38s to 42s.

9. A control device for an air conditioner, characterized in that It includes a processor and a memory. A computer program for execution on the processor is stored on the memory. When the processor executes the computer program, the control method of the air conditioner as described in any one of claims 1 to 8 is implemented.

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