Control method of air conditioner, control device of air conditioner, and air conditioner

Abstract

The application discloses a control method of an air conditioner, a control device of the air conditioner and the air conditioner. The control method of the air conditioner comprises the following steps: acquiring a current gear frequency interval; acquiring an ambient temperature after the current gear frequency interval is a preset low-frequency interval; controlling a compressor to operate according to the ambient temperature and acquiring an actual compression ratio of the compressor; and controlling an operating state of the air conditioner according to the actual compression ratio. According to the control method of the air conditioner, when the current gear frequency interval of the air conditioner is located in the preset low-frequency interval, the compression ratio of the compressor is preliminarily adjusted according to the ambient temperature, and then the adjustment is judged to further adjust the compression ratio of the compressor, so that the sliding vane of the compressor can be kept in a stable state during operation, the noise of the air conditioner is reduced, and the comfort of users is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household equipment manufacturing, and in particular to a control method of an air conditioner, a control device of the air conditioner suitable for the control method, and the air conditioner. BACKGROUND

[0002] The existing portable air conditioner, when the user uses the mute gear, the operating frequency of the compressor is low, and the compressor is prone to produce the sound of the sliding vane hitting the cylinder wall during operation, thereby generating a large amount of noise, affecting the comfort of the user, reducing the service life of the compressor, and there is room for improvement. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to propose a control method of an air conditioner, which is conducive to reducing or eliminating the swing of the sliding vane during operation, so as to reduce the noise of the compressor and improve the service life of the compressor.

[0004] The control method of the air conditioner according to an embodiment of the present application comprises: obtaining a current gear frequency interval; obtaining an ambient temperature after the current gear frequency interval is a preset low frequency interval; controlling the operation of the compressor according to the ambient temperature and obtaining an actual compression ratio of the compressor; and controlling the operating state of the air conditioner according to the actual compression ratio.

[0005] The control method of the air conditioner according to an embodiment of the present application, when the current gear frequency interval of the air conditioner is located in the preset low frequency interval, preliminarily adjusts the compression ratio of the compressor according to the ambient temperature, and judges after the preliminary adjustment to further adjust the compression ratio of the compressor, so that the sliding vane of the compressor remains in a stable state during operation, reduces the noise of the air conditioner, and improves the comfort of the user.

[0006] The control method of the air conditioner according to some embodiments of the present application, the control method comprises: obtaining an actual target operating frequency according to the ambient temperature; controlling the compressor to operate at the actual target operating frequency; and obtaining the actual compression ratio of the compressor after controlling the compressor to operate for a preset time length.

[0007] The control method of the air conditioner according to some embodiments of the present application, the control method comprises: judging whether the actual compression ratio is less than a preset compression ratio; if yes, increasing the actual target operating frequency of the compressor and reducing the rotating speed of the fan on the condenser side; and if no, keeping the actual target operating frequency of the compressor unchanged.

[0008] The control method of the air conditioner according to some embodiments of the present application, the obtaining of the actual compression ratio of the compressor comprises: obtaining the high-pressure side pressure and the low-pressure side pressure of the compressor; and obtaining the actual compression ratio according to the ratio of the high-pressure side pressure to the low-pressure side pressure.

[0009] The control method of the air conditioner according to some embodiments of the present application, the control method further comprises: after the current gear frequency interval is a preset low frequency interval; obtaining the starting mode of the air conditioner; and controlling the running state of the air conditioner according to the starting mode.

[0010] The control method of the air conditioner according to some embodiments of the present application, the controlling of the running state of the air conditioner according to the starting mode comprises: when the starting mode is a cold start, controlling the compressor and the evaporator side fan to start after the condenser side fan is controlled to start and run for a first set time period.

[0011] The control method of the air conditioner according to some embodiments of the present application, the controlling of the running state of the air conditioner according to the starting mode comprises: when the starting mode is a hot start, controlling the compressor and the condenser side fan to start after the evaporator side fan is controlled to start and run for a second set time period.

[0012] The control method of the air conditioner according to some embodiments of the present application, the obtaining of the starting mode of the air conditioner comprises: obtaining the starting duration of the air conditioner; and determining the starting mode to be a cold start or a hot start according to the starting duration.

[0013] The present application further provides a control device of an air conditioner.

[0014] The control device of the air conditioner according to the embodiments of the present application, the control device comprises: an obtaining module, the obtaining module is used for obtaining a current gear frequency interval, and obtaining an ambient temperature after the current gear frequency interval is a preset low frequency interval; and a control module, the control module is used for controlling a compressor to run according to the ambient temperature, obtaining an actual compression ratio of the compressor, and controlling a running state of the air conditioner according to the actual compression ratio.

[0015] The present application further provides an air conditioner.

[0016] The air conditioner according to the embodiments of the present application comprises a memory, a processor, and a control program of the air conditioner stored in the memory and capable of running on the processor, and the processor implements the control method of the air conditioner according to any of the above embodiments when executing the control program of the air conditioner.

[0017] The control device for the air conditioner, the air conditioner itself, and the control method for the air conditioner described above all have the same advantages over the prior art, and will not be repeated here.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a flowchart illustrating the control method of an air conditioner according to an embodiment of the present invention;

[0021] Figure 2 This is a flowchart illustrating the control method of an air conditioner according to an embodiment of the present invention during its specific execution.

[0022] Figure 3 This is an overall flowchart of the control method for an air conditioner according to an embodiment of the present invention;

[0023] Figure 4 This is a flowchart illustrating the control method of an air conditioner according to an embodiment of the present invention during its specific execution.

[0024] Figure 5 This is a flowchart illustrating the control method of an air conditioner according to an embodiment of the present invention during its specific execution.

[0025] Figure 6 This is a structural cross-sectional view of an air conditioner according to an embodiment of the present invention.

[0026] Figure label:

[0027] Air conditioner 100,

[0028] Condenser 1, Evaporator 2, Compressor 3. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] The following is for reference. Figures 1-6 This invention describes a control method for an air conditioner according to an embodiment of the present invention.

[0031] like Figure 6As shown, the air conditioner 100 is configured as a rectangular structure as a whole, and the overall size is small, facilitating the movement of the air conditioner 100, thereby facilitating placement in different scenarios, such as a bedroom, a living room, and a kitchen, and occupying a small space, facilitating placement in a room. The air conditioner 100 has an evaporator 2, a condenser 1, and a fan assembly, the evaporator 2 includes a first evaporator 2 and a second evaporator 2, the condenser 1 includes a first condenser 1 and a second condenser 1, and the fan assembly includes a motor, a fan wheel, and a bracket. The evaporator 2 and the condenser 1 are located at the upper and lower ends of the shell and are arranged in an upper and lower relationship, such as Figure 6 As shown, the first condenser 1 and the second condenser 1 are respectively arranged at the lower two sides of the internal space of the shell, the first evaporator 2 and the second evaporator 2 are respectively arranged at the upper two sides of the internal space of the shell, and the first evaporator 2 and the first condenser 1 are arranged in sequence in the upward and downward directions, while the second evaporator 2 and the second condenser 1 are arranged in sequence in the upward and downward directions, and the fan assembly is installed at the intermediate position of the evaporator 2 and the condenser 1.

[0032] It should be noted that the air conditioner 100 is provided with a compressor 3, which is used to compress the refrigerant in the refrigerant circuit of the air conditioner 100, wherein the compressor 3 can extract the refrigerant from the evaporator 2, compress the refrigerant, and make the refrigerant change from a gaseous state to a liquid state, so that the gas pressure is increased. The compressed refrigerant flows into the condenser 1 to be cooled and condensed, so that heat is dissipated to the air through the cooling fins. At this time, the cooled refrigerant flows from the condenser 1 to the evaporator 2 and is injected into the evaporator 2 through the capillary tube, so that the pressure drops and the liquid refrigerant immediately changes to a gaseous state to absorb heat from the air on the evaporator 2 side through the cooling fins. In this way, the compressor 3 of the air conditioner 100 works continuously, thereby continuously absorbing heat from one end of the evaporator 2 into the refrigerant and sending it to the condenser 1 to be dissipated to the air, thereby playing a role in adjusting the temperature of the air on the evaporator 2 side. That is, the evaporator 2 is the low-pressure side, and the condenser 1 is the high-pressure side.

[0033] As shown, Figure 1 The control method of the embodiment of the present application comprises:

[0034] S10: Obtain the current gear frequency range. The air conditioner 100 usually has multiple different gears, such as a silent gear, a comfortable gear, and a high wind gear, etc. The user can select the gear of the air conditioner 100 according to his own needs to improve his own comfort, and different gears usually have different frequency ranges. When the air conditioner 100 operates at a specific gear, the operating frequency of the air conditioner 100 is always within the frequency range.

[0035] That is, when the user selects a gear, the air conditioner 100 is controlled to operate in the selected gear, at which time the current gear frequency interval of the air conditioner 100 can be obtained, and it is determined whether the gear frequency interval belongs to the preset low frequency interval, or belongs to the preset medium frequency interval, or belongs to the preset high frequency interval. The preset low frequency interval, the preset medium frequency interval and the preset high frequency interval can be divided according to the experience of the person skilled in the art and the test results.

[0036] S20: After the current gear frequency interval is the preset low frequency interval, the ambient temperature is obtained. It should be noted that the current gear frequency interval is in the preset low frequency interval, for example, when the gear of the air conditioner 100 is the mute gear, the operating frequency of the compressor 3 is low, at this time, the pressure ratio between the high pressure area and the low pressure area in the compressor 3 is small (that is, the compression ratio is small), and in the running process, the compressor 3 is easy to appear the condition that the sliding vane strikes the cylinder wall, which will produce a large amount of noise, affect the comfort of the user, and will cause the sliding vane to be damaged, reduce the service life of the compressor 3.

[0037] It can be understood that when the compression ratio of the compressor 3 is small, the ambient temperature has a greater impact on the pressure in the compressor 3, for example, when the ambient temperature is high, the pressures of the high pressure area and the low pressure area in the compressor 3 are both increased, which causes the compression ratio of the compressor 3 to further decrease, reducing the operating stability of the compressor 3. That is, the air conditioner 100 is provided with a temperature sensor, which detects the current ambient temperature through the temperature sensor, so as to determine the influence of the ambient temperature on the compressor 3.

[0038] S30: According to the ambient temperature, the compressor 3 is controlled to operate and the actual compression ratio of the compressor 3 is obtained. That is, when the air conditioner 100 obtains the ambient temperature, the operating frequency of the compressor 3 can be adjusted according to the ambient temperature, for example, when the ambient temperature is high, the operating frequency of the compressor 3 can be increased, so that the compression ratio of the high pressure area and the low pressure area in the compressor 3 is increased, to reduce the possibility of the sliding vane in the compressor 3 to swing.

[0039] Further, the compressor 3 operates at the adjusted frequency, so that the pressures of the high pressure area and the low pressure area in the compressor 3 change, at which time the actual compression ratio of the compressor 3 is obtained, and the actual compression ratio is used to determine whether the sliding vane in the compressor 3 will swing.

[0040] S40: controlling the running state of the air conditioner 100 according to the actual compression ratio. That is, when the actual compression ratio is large, that is, the slide in the compressor 3 will not swing, the air conditioner 100 is in a stable state, and the compressor 3 continues to run at the adjusted frequency. If the actual compression ratio is small, that is, the slide in the compressor 3 may swing, the running state of the air conditioner 100 is further adjusted to increase the compression ratio of the compressor 3, so that the slide in the compressor 3 remains stable, and the noise of the air conditioner 100 is reduced.

[0041] According to the control method of the air conditioner, when the current gear frequency interval of the air conditioner 100 is located in the preset low frequency interval, the compression ratio of the compressor 3 is preliminarily adjusted according to the environment temperature, and after the preliminary adjustment, it is judged to further adjust the compression ratio of the compressor 3, so that the slide in the compressor 3 remains stable during operation, reduces the noise of the air conditioner 100, and improves the comfort of the user.

[0042] In some embodiments, as shown in Figure 2 According to the control method of the air conditioner, when the current gear frequency interval of the air conditioner 100 is located in the preset low frequency interval, the compression ratio of the compressor 3 is preliminarily adjusted according to the environment temperature, and after the preliminary adjustment, it is judged to further adjust the compression ratio of the compressor 3, so that the slide in the compressor 3 remains stable during operation, reduces the noise of the air conditioner 100, and improves the comfort of the user.

[0043] S31: obtaining the actual target running frequency according to the environment temperature. That is, when the air conditioner 100 is in the preset low frequency interval, the environment temperature can be obtained by the temperature sensor, and the actual target running frequency can be calculated according to the environment temperature and the current gear of the air conditioner 100. Wherein, when the environment temperature is high, the actual target running frequency is greater than the current gear frequency interval.

[0044] S32: controlling the compressor 3 to run at the actual target running frequency. Wherein, the actual target running frequency is close to the frequency that makes the compressor 3 stable, so as to reduce the possibility of the slide in the compressor 3 swinging. Specifically, when the environment temperature is high, the compressor 3 is running at a frequency greater than the current gear frequency interval, so that the compression ratio of the compressor 3 increases to approach the compression ratio that makes the slide in the compressor 3 stable, improves the stability of the slide in the compressor 3, reduces the noise of the air conditioner 100, and improves the comfort of the user.

[0045] S33: obtaining the actual compression ratio of the compressor 3 after controlling the compressor 3 to run for a preset time length. It can be understood that when the compressor 3 runs at the actual target running frequency for a preset time length, the running of the compressor 3 tends to be stable, and then the compression ratio of the compressor 3 tends to be stable. At this time, the actual compression ratio of the compressor 3 can be obtained to judge the stable state of the slide.

[0046] In some embodiments, as shown in Figure 3 According to the control method of the air conditioner, when the current gear frequency interval of the air conditioner 100 is located in the preset low frequency interval, the compression ratio of the compressor 3 is preliminarily adjusted according to the environment temperature, and after the preliminary adjustment, it is judged to further adjust the compression ratio of the compressor 3, so that the slide in the compressor 3 remains stable during operation, reduces the noise of the air conditioner 100, and improves the comfort of the user.

[0047] S41: determining whether the actual compression ratio is less than a preset compression ratio. It should be noted that the preset compression ratio can be obtained through experiments. When the compression ratio of the compressor 3 is not less than the preset compression ratio, the sliding vane in the compressor 3 is in a stable state, and the compressor 3 can be relatively stable during operation to avoid scratching the inner wall of the compressor 3. When the compression ratio of the compressor 3 is less than the preset compression ratio, the sliding vane in the compressor 3 is in an unstable state, and the compressor 3 is prone to swing during operation, which will scratch the inner wall of the compressor 3 and generate a large amount of noise.

[0048] S42: if yes, increasing the actual target operating frequency of the compressor 3 and reducing the fan speed on the condenser 1 side. That is, when the actual compression ratio is less than the preset compression ratio, the actual compression ratio is too small, and the sliding vane of the compressor 3 is prone to swing in the sliding vane groove. At this time, the actual target operating frequency of the compressor 3 is increased by a preset frequency value, and the fan speed on the condenser 1 side is reduced by a preset speed value. The preset frequency value and the preset speed value are obtained through experiments.

[0049] Through the above setting, the temperature of the high-pressure side of the compressor 3 is increased, thereby increasing the pressure of the high-pressure side to increase the compression ratio of the compressor 3, reducing the possibility of the sliding vane of the compressor 3 swinging, and helping to achieve the elimination of abnormal noise.

[0050] S43: if no, the actual target operating frequency of the compressor 3 remains unchanged. That is, when the actual compression ratio is not less than the preset compression ratio, the sliding vane of the compressor 3 is in a stable state, and at this time, the actual target operating frequency of the compressor 3 can be maintained.

[0051] Further, as shown in Figure 3 When the judgment is completed and the compressor 3 continues to operate for a preset time, the current gear frequency range of the air conditioner 100 can be re-judged. If the current operating frequency of the air conditioner is in the preset low frequency range, the control method of the embodiment of the application is executed again.

[0052] In some embodiments, as shown in Figure 4 The actual compression ratio of the compressor 3 is obtained by:

[0053] S34: obtaining the high-pressure side pressure and the low-pressure side pressure of the compressor 3. That is, a pressure sensor can be arranged on the high-pressure side and the low-pressure side of the compressor 3 to detect in real time through the pressure sensor, thereby obtaining the high-pressure side pressure and the low-pressure side pressure of the compressor 3.

[0054] S35: Obtain the actual compression ratio according to the ratio of the high-pressure side pressure to the low-pressure side pressure. It can be understood that, by detecting the high-pressure side pressure and the low-pressure side pressure in real time to obtain an accurate actual compression ratio, the compression ratio of the compressor 3 can be effectively monitored, thereby facilitating adjustment of the operating state of the compressor 3.

[0055] In some embodiments, as shown in FIG. 1, Figure 5 As shown in FIG. 1, the control method further comprises:

[0056] S100: Obtain the starting mode of the air conditioner 100. It should be noted that the starting mode of the air conditioner includes cold starting and hot starting. The hot starting is that the air conditioner 100 is started after a short shutdown, at this time, the refrigerant and oil in the compressor 3 are not completely miscible, and the compressor 3 can be quickly started. The cold starting is that the air conditioner 100 is started after a long shutdown, at this time, the solubility of the oil in the compressor 3 in the refrigerant is large, and the compressor 3 needs to be preheated for a long time to increase the discharge temperature of the compressor 3, so as to separate the refrigerant and the oil, thereby realizing the starting of the air conditioner 100.

[0057] S200: Control the operating state of the air conditioner 100 according to the starting mode. That is, when the starting mode is hot starting, the operating state of the air conditioner 100 can be adjusted to ensure that the air conditioner 100 can quickly blow cold air, thereby improving the comfort of the user; when the starting mode is cold starting, the operating state of the air conditioner 100 can be adjusted so that the air conditioner 100 starts to blow air after being fully heated, thereby reducing the noise of the air conditioner 100 during the starting stage and improving the comfort of the user.

[0058] In some embodiments, as shown in FIG. 1, Figure 5 As shown in FIG. 1, the control method further comprises:

[0059] S201: When the starting mode is cold starting, control the fan on the side of the condenser 1 to start operating for a first set time period, and then control the fans on the sides of the compressor 3 and the evaporator 2 to start. It should be noted that when the air conditioner 100 operates at a low wind resistance and a low frequency, the system requires a small amount of refrigerant, the system has serious liquid accumulation, and the evaporator 2 of the air conditioner 100 is located above the compressor 3. When the refrigerant enters the cylinder of the compressor 3 and is compressed, the refrigerant will vaporize in the cylinder, causing the sliding vane to separate from the cylinder wall, thereby causing a knocking noise. That is, the fan on the side of the condenser 1 can be started first to concentrate most of the refrigerant in the condenser 1, reduce the flow of refrigerant to the compressor 3, and reduce the vaporization of the refrigerant in the compressor 3 to cause the sliding vane to vibrate. At the same time, the compressor 3 can be heated to separate the refrigerant from the oil, thereby facilitating the normal operation of the air conditioner 100.

[0060] Further, when the fan on the side of the condenser 1 is operated for a first set time period, the temperature of the compressor 3 is increased, the amount of refrigerant is increased, and the refrigeration effect of the air conditioner 100 is improved. At this time, the fan on the side of the compressor 3 and the evaporator 2 is turned on, so that the air conditioner 100 can normally refrigerate. It can be understood that, by preferentially turning on the fan on the side of the condenser 1, the air conditioner 100 can start working when the refrigerant is sufficient, the working efficiency of the air conditioner 100 is improved, the reliability of the air conditioner 100 is improved, the noise of the air conditioner 100 when starting is reduced, and the comfort of the user is improved.

[0061] In some embodiments, as shown in Figure 5 controlling the running state of the air conditioner 100 according to the starting mode comprises:

[0062] S202: When the starting mode is a hot start, the fan on the side of the evaporator 2 is controlled to be turned on and operated for a second set time period, and then the fan on the side of the compressor 3 and the condenser 1 is controlled to be turned on.

[0063] That is, the air conditioner 100 is closed for a short time, the compressor 3 is not completely cooled, and the amount of refrigerant is sufficient. The fan on the side of the evaporator 2 can be preferentially controlled to be turned on, so that the temperature of the air at the evaporator 2 is quickly reduced. When the fan on the side of the evaporator 2 is turned on and operated for a second set time period, the air temperature at the evaporator 2 is low. At this time, the fan on the side of the compressor 3 and the condenser 1 is turned on to blow cold air, which reduces the time for the user to wait for cold air and improves the comfort of the user.

[0064] In some embodiments, as shown in Figure 5 obtaining the starting mode of the air conditioner 100 comprises:

[0065] S101: Obtain the starting duration of the air conditioner 100. That is, the air conditioner 100 is provided with a timing device. When the air conditioner 100 is turned off, the timing device starts to work, and stops timing when the air conditioner 100 is turned on next time, so as to obtain the starting duration of the air conditioner 100. It should be noted that if the air conditioner 100 starts after power-off and reconnection, the starting duration in the timing device is automatically taken as the maximum value.

[0066] S102: Determine the starting mode as a cold start or a hot start according to the starting duration. That is, the starting mode of the air conditioner 100 can be determined according to the shutdown time of the air conditioner 100. In the case of starting for a duration greater than or equal to a set duration, it is a cold start. In the case of starting for a duration less than the set duration, it is a hot start. The set duration can be obtained according to the experience or test of a person skilled in the art.

[0067] The application also provides a control device of an air conditioner.

[0068] The control device of the air conditioner according to the embodiment of the present application comprises: an acquisition module and a control module. The acquisition module can acquire the current gear frequency interval of the air conditioner 100, and determine whether the gear frequency interval belongs to a preset low frequency interval. After determining that the current gear frequency interval is the preset low frequency interval, the control module controls the temperature sensor to acquire the ambient temperature.

[0069] The control module can adjust the operating frequency of the compressor 3 according to the ambient temperature. For example, when the ambient temperature is high, the operating frequency of the compressor 3 can be increased, so that the compression ratio of the high-pressure area and the low-pressure area in the compressor 3 is increased, thereby reducing the possibility of the sliding vane in the compressor 3 swinging. The control module can control the compressor 3 to operate at the adjusted frequency, so that the pressure of the high-pressure area and the low-pressure area in the compressor 3 changes. At this time, the control module can acquire the actual compression ratio of the compressor 3, and determine according to the actual compression ratio.

[0070] Further, when the control module determines that the actual compression ratio is large, that is, the sliding vane in the compressor 3 will not swing, the air conditioner 100 is in a stable state, and the control module controls the compressor 3 to continuously operate at the adjusted frequency. If the control module determines that the actual compression ratio is small, that is, the sliding vane in the compressor 3 may swing, the control module can further adjust the operating state of the air conditioner 100 to increase the compression ratio of the compressor 3, so as to ensure that the sliding vane of the compressor 3 remains stable, thereby reducing the noise of the air conditioner 100.

[0071] Therefore, the control device can preliminarily adjust the compression ratio of the compressor 3 according to the ambient temperature when the current gear frequency interval of the air conditioner 100 is in the preset low frequency interval, and determine after the preliminary adjustment to further adjust the compression ratio of the compressor 3, so that the sliding vane of the compressor 3 remains in a stable state during operation, thereby reducing the noise of the air conditioner 100 and improving the comfort of the user.

[0072] It should be noted that the control device of the air conditioner according to the embodiment of the present application is applicable to the control method of the air conditioner according to any one of the above embodiments, and the specific implementation is the same as the above method steps, which will not be described here.

[0073] The present application also provides an air conditioner 100.

[0074] The air conditioner 100 according to the embodiment of the present application comprises a memory, a processor, and a control program of the air conditioner stored in the memory and executable on the processor, and the processor executes the control program of the air conditioner to implement the control method of the air conditioner according to any one of the above embodiments. The air conditioner 100 can preliminarily adjust the compression ratio of the compressor 3 according to the ambient temperature when the current gear frequency interval of the air conditioner 100 is in the low frequency interval, and make a judgment after the preliminary adjustment to further adjust the compression ratio of the compressor 3, so that the sliding vane of the compressor 3 maintains a stable state during operation, reduces the noise of the air conditioner 100, and improves the comfort of the user.

[0075] In addition, other configurations and effects of the air conditioner 100 according to the embodiment of the present application are known to those skilled in the art, and are not described here.

[0076] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0077] In the description of the present application, "first feature" and "second feature" can include one or more of the features.

[0078] In the description of the present application, "a plurality of" means two or more.

[0079] In the description of the present application, "above", "over", and "on" of a first feature to a 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.

[0080] In the description of the present application, "above", "over", and "on" of a first feature to a second feature include that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height.

[0081] In the description of the specification, reference to "one embodiment", "some embodiments", "an exemplary embodiment", "an example", "a specific example", or "some examples" means that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. The appearances of the phrases "in one embodiment", "in some embodiments", "in an exemplary embodiment", "an example", "a specific example", or "some examples" in various places in the specification are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0082] Although embodiments of the application have been shown and described, it will be appreciated that those skilled in the art can make various changes, modifications, substitutions and alterations thereto without departing from the principles and scope of the application, which are defined by the claims and their equivalents.

Claims

1. A control method for an air conditioner, characterized in that, The control method includes: Obtain the current frequency range of the compressor; After the current frequency range of the compressor is within a preset low-frequency range, the ambient temperature is obtained; The compressor is controlled to operate based on the ambient temperature, and the actual compression ratio of the compressor is obtained. The operating status of the air conditioner is controlled according to the actual compression ratio; After the current frequency range of the compressor is within the preset low frequency range, The start-up mode of the air conditioner is obtained, wherein the start-up mode is either cold start or hot start; The air conditioner's fan is controlled according to the cold start or hot start start method.

2. The control method for an air conditioner according to claim 1, characterized in that, The step of controlling the compressor operation based on the ambient temperature to obtain the actual compression ratio of the compressor includes: The actual target operating frequency is obtained based on the ambient temperature. Control the compressor to operate at the actual target operating frequency; The actual compression ratio of the compressor is obtained after controlling the compressor to run for a preset time.

3. The control method for an air conditioner according to claim 1, characterized in that, The step of controlling the operating state of the air conditioner according to the actual compression ratio includes: Determine whether the actual compression ratio is less than the preset compression ratio; If so, the actual target operating frequency of the compressor is increased and the fan speed on the condenser side is decreased; If not, the actual target operating frequency of the compressor is kept constant.

4. The control method for an air conditioner according to claim 1, characterized in that, The step of obtaining the actual compression ratio of the compressor includes: Obtain the high-pressure side pressure and low-pressure side pressure of the compressor; The actual compression ratio is obtained based on the ratio of the high-pressure side pressure to the low-pressure side pressure.

5. The control method for an air conditioner according to claim 1, characterized in that, The control of the operating status of the air conditioner according to the start-up method includes: When the start-up mode is determined to be a cold start, the fan on the condenser side is controlled to start running for a first set time period, and then the fans on the compressor and evaporator sides are controlled to start.

6. The control method for an air conditioner according to claim 1, characterized in that, The control of the operating status of the air conditioner according to the start-up method includes: When the start-up method is determined to be a hot start, the fan on the evaporator side is controlled to start running for a second set time period, and then the fans on the compressor and condenser side are controlled to start.

7. The control method for an air conditioner according to claim 1, characterized in that, The method for obtaining the start-up mode of the air conditioner includes: Obtain the start-up time of the air conditioner; The startup method is determined to be either a cold start or a warm start based on the startup duration.

8. A control device for an air conditioner, suitable for using the control method of the air conditioner according to any one of claims 1-7, characterized in that, The control device includes: The acquisition module is used to acquire the ambient temperature after acquiring the current gear frequency range of the compressor and the current gear frequency range of the compressor being a preset low frequency range; The control module is used to control the operation of the compressor according to the ambient temperature and obtain the actual compression ratio of the compressor, and to control the operating status of the air conditioner according to the actual compression ratio.

9. An air conditioner, characterized in that, The device includes a memory, a processor, and a control program for an air conditioner stored in the memory and executable on the processor. When the processor executes the control program for the air conditioner, it implements the control method for the air conditioner according to any one of claims 1-7.

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