Abnormal sound control method and device, electronic equipment and air conditioning equipment

Abstract

The invention relates to an abnormal sound control method and device, electronic equipment and air conditioning device.According to the method, in the freezing stage of self-cleaning of the air conditioning equipment, the air conditioning equipment can run at the preset valve opening degree for the set duration, the temperature of an indoor heat exchanger of the air conditioning equipment is lowered, and the requirement for the temperature in the freezing stage is met; and in the subsequent process of the freezing stage, an electronic expansion valve and / or a draught fan of the air conditioner equipment are / is adjusted, so that the current temperature of an indoor heat exchanger of the air conditioner equipment can be larger than a first set temperature under the condition that the freezing requirement of the freezing stage is met, and the first set temperature comprises the lowest temperature at which the air conditioner equipment cannot make abnormal sounds. By means of the arrangement, the temperature of the air conditioning equipment in the self-cleaning freezing stage can be kept above the first set temperature under the condition that the freezing requirement of the freezing stage is met, and abnormal sound caused by too low temperature of the air conditioning equipment is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a method and device for controlling abnormal noise, electronic equipment and air conditioning equipment. Background Art

[0002] Air conditioning equipment will accumulate a lot of dust after long-term use, affecting the indoor air quality, and people need to clean the air conditioning equipment regularly. Manual cleaning is time-consuming and labor-intensive, and air conditioning equipment with self-cleaning function can automatically clean itself, which is gradually becoming an industry trend. However, during the self-cleaning process, the air conditioner indoor unit will make strange noises, affecting the user experience. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a method, device, electronic device and air-conditioning equipment for controlling abnormal noise, so as to overcome the problem that the indoor unit of the air conditioner will emit abnormal noise during the self-cleaning process, affecting the user experience.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions:

[0005] In a first aspect, the present application provides a method for controlling abnormal noise, comprising:

[0006] If the duration of the freezing stage of the air-conditioning device during self-cleaning is less than or equal to the set duration, controlling the electronic expansion valve of the air-conditioning device to operate at a preset valve opening;

[0007] If the duration of the freezing stage of the air-conditioning equipment is greater than the set duration, the electronic expansion valve and / or fan of the air-conditioning equipment is adjusted so that the current temperature of the indoor heat exchanger of the air-conditioning equipment can be greater than the first set temperature while meeting the freezing requirements of the freezing stage until the freezing stage ends; the first set temperature includes the lowest temperature at which the air-conditioning equipment cannot make abnormal sounds.

[0008] Further, in the method described above, the electronic expansion valve and / or fan of the air-conditioning equipment is adjusted so that the current temperature of the indoor heat exchanger of the air-conditioning equipment can be greater than the first set temperature while satisfying the freezing requirements of the freezing stage, including:

[0009] Detecting whether the current temperature of the indoor heat exchanger is less than a second set temperature; the second set temperature includes a maximum temperature at which the indoor heat exchanger can meet the freezing requirement of the freezing stage;

[0010] If it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the second set temperature, controlling the electronic expansion valve to reduce the valve opening at a first speed;

[0011] If it is detected that the current temperature of the indoor heat exchanger is lower than the second set temperature, the electronic expansion valve and / or fan of the air-conditioning equipment is adjusted according to the relationship between the current temperature of the indoor heat exchanger and the third set temperature; the third set temperature is lower than the second set temperature.

[0012] Furthermore, in the method described above, adjusting the electronic expansion valve and / or fan of the air-conditioning equipment according to the relationship between the current temperature of the indoor heat exchanger and the third set temperature includes:

[0013] Detecting whether the current temperature of the indoor heat exchanger is lower than the third set temperature;

[0014] If it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the third set temperature, adjusting the electronic expansion valve of the air-conditioning equipment according to the current temperature change rate of the indoor heat exchanger;

[0015] If it is detected that the current temperature of the indoor heat exchanger is lower than the third set temperature, the electronic expansion valve and / or fan of the air-conditioning equipment is adjusted according to the relationship between the current temperature of the indoor heat exchanger and the target temperature; the target temperature includes the temperature of the indoor heat exchanger when the duration of the freezing stage of the air-conditioning equipment is the set duration.

[0016] Furthermore, in the method described above, adjusting the electronic expansion valve of the air-conditioning equipment according to the current temperature change rate of the indoor heat exchanger includes:

[0017] If the current temperature increase rate of the indoor heat exchanger is greater than the first set change rate, the electronic expansion valve is controlled to reduce the valve opening at the first speed; if the current temperature increase rate of the indoor heat exchanger is less than or equal to the first set change rate and greater than the second set change rate, the electronic expansion valve is controlled to reduce the valve opening at the second speed; if the current temperature increase rate of the indoor heat exchanger is less than or equal to the second set change rate, the electronic expansion valve is controlled to maintain the current valve opening;

[0018] Among them, the first set change speed is greater than the second set change speed; the first speed is greater than the second speed.

[0019] Furthermore, in the method described above, adjusting the electronic expansion valve and / or fan of the air-conditioning equipment according to the relationship between the current temperature of the indoor heat exchanger and the target temperature includes:

[0020] If it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the target temperature, adjusting the electronic expansion valve of the air-conditioning equipment according to the current temperature change rate of the indoor heat exchanger;

[0021] If it is detected that the current temperature of the indoor heat exchanger is lower than the target temperature, the electronic expansion valve and / or the fan of the air-conditioning equipment is adjusted according to the relationship between the current temperature of the indoor heat exchanger and the first set temperature.

[0022] Furthermore, in the method described above, adjusting the electronic expansion valve of the air-conditioning equipment according to the current temperature change rate of the indoor heat exchanger includes:

[0023] If the current temperature reduction speed of the indoor heat exchanger is greater than the first set change speed, the electronic expansion valve is controlled to increase the valve opening at the first speed; if the current temperature reduction speed of the indoor heat exchanger is less than or equal to the first set change speed and greater than the second set change speed, the electronic expansion valve is controlled to increase the valve opening at the second speed; if the current temperature reduction speed of the indoor heat exchanger is less than or equal to the second set change speed, the electronic expansion valve is controlled to maintain the current valve opening;

[0024] Among them, the first set change speed is greater than the second set change speed; the first speed is greater than the second speed.

[0025] Furthermore, in the method described above, adjusting the electronic expansion valve and / or fan of the air-conditioning equipment according to the relationship between the current temperature of the indoor heat exchanger and the first set temperature includes:

[0026] If it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the first set temperature, controlling the electronic expansion valve to increase its opening at a first speed;

[0027] If it is detected that the current temperature of the indoor heat exchanger is lower than the first set temperature, the fan is controlled to run at a set speed.

[0028] In a second aspect, the present application provides a self-cleaning abnormal noise control device, comprising:

[0029] A first control module, configured to control the electronic expansion valve of the air-conditioning device to operate at a preset valve opening if the duration of the freezing stage of the self-cleaning of the air-conditioning device is less than or equal to a set duration;

[0030] The second control module is used to adjust the electronic expansion valve and / or fan of the air-conditioning equipment if the duration of the freezing stage of the air-conditioning equipment is greater than the set time, so that the current temperature of the indoor heat exchanger of the air-conditioning equipment can be greater than the first set temperature while meeting the freezing requirements of the freezing stage until the freezing stage ends; the first set temperature includes the lowest temperature at which the air-conditioning equipment cannot make abnormal sounds.

[0031] In a third aspect, the present application provides an electronic device, including a processor and a memory, wherein the processor is connected to the memory:

[0032] Wherein, the processor is used to call and execute the program stored in the memory;

[0033] The memory is used to store the program, and the program is at least used to execute any one of the methods described above.

[0034] In a fourth aspect, the present application provides an air conditioning device, comprising an abnormal sound control device; the abnormal sound control device is configured to be able to execute any of the methods described above.

[0035] The abnormal noise control method, device, electronic device and air conditioning equipment of the present invention can first make the air conditioning equipment run for a set time at a preset valve opening during the freezing stage of the air conditioning equipment self-cleaning, so that the temperature of the indoor heat exchanger of the air conditioning equipment can be reduced, and the temperature requirement of the freezing stage is achieved. In the subsequent process of the freezing stage, the electronic expansion valve and / or fan of the air conditioning equipment is adjusted so that the current temperature of the indoor heat exchanger of the air conditioning equipment can be greater than the first set temperature while meeting the freezing requirements of the freezing stage, wherein the first set temperature includes the lowest temperature at which the air conditioning equipment cannot make abnormal noise. With such an arrangement, the temperature of the air conditioning equipment during the freezing stage of self-cleaning can be maintained above the first set temperature while meeting the freezing requirements of the freezing stage, thereby avoiding abnormal noise caused by the air conditioning equipment due to too low temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 It is a noise test spectrum diagram of air conditioning equipment in self-cleaning mode in the prior art;

[0038] Figure 2 It is a flow chart provided by an embodiment of the abnormal noise control method of the present invention;

[0039] Figure 3 is a flow chart provided by another embodiment of the abnormal noise control method of the present invention;

[0040] Figure 4 is a noise test spectrum diagram of the air-conditioning device of the present invention in the self-cleaning mode;

[0041] Figure 5 It is a structural schematic diagram provided by an embodiment of the abnormal noise control device of the present invention;

[0042] Figure 6 It is a structural schematic diagram provided by an embodiment of the electronic device of the present invention. DETAILED DESCRIPTION

[0043] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0044] As consumers' demand for air quality continues to increase, air conditioners with health functions are gradually becoming a market and industry trend. Among them, the self-cleaning function has become a cleaning mode that companies are competing to adopt for air conditioners due to its significant sterilization ability, convenient operation and cost advantages. However, during the self-cleaning process, abnormal noises will occur in the indoor unit of the air conditioner, which will have a great impact on the comfort of users.

[0045] Air conditioning equipment self-cleaning is a function that can automatically clean dust and bacteria inside the air conditioning equipment, which generally includes three stages: condensation, freezing and defrosting. In the condensation stage, the air conditioning equipment makes the temperature of the indoor heat exchanger surface lower than the dew point temperature of the air through refrigeration. The moisture in the air will condense on the surface of the indoor heat exchanger to form water droplets, so that the dust particles attached to the surface of the indoor heat exchanger can be moistened with condensed water to prepare for the subsequent freezing stage; in the freezing stage, the air conditioning equipment continues to refrigerate, so that the temperature of the indoor heat exchanger surface is further reduced, and the previously formed water droplets form frost, and the dust is fixed in the ice layer, which is convenient for subsequent removal. The low temperature environment also helps to kill some microorganisms; the air conditioning equipment switches to the heating mode and enters the defrosting stage, heating the indoor heat exchanger to melt the frost into water and discharge it through the drain pipe. This step not only removes the dust in the frost, but also further reduces the possibility of bacterial growth through high-temperature drying.

[0046] It should be noted that the self-cleaning mode of some air-conditioning equipment also includes a drying stage, or includes this stage in the defrosting stage. During the drying stage, the air-conditioning equipment will start the drying program to ensure that no impurities or moisture remain in the room during the entire process, which helps prevent the growth of bacteria and mold.

[0047] Figure 1 This is the noise test spectrum of the air conditioner in self-cleaning mode, where: Figure 1 The horizontal axis represents time S, and the vertical axis represents the noise value dB(A). Figure 1 As shown in the figure, the abnormal noise is most obvious in the freezing stage during the self-cleaning process, and in the freezing stage, the position with a higher frequency of abnormal noise is located in the middle and late stages of the freezing stage, that is, after the compressor has been running for 2-3 minutes. This is because after the compressor has been running for 2-3 minutes, the indoor heat exchanger enters and maintains a deep cold state, and the temperature of the indoor heat exchanger is a deep cold temperature. The sudden drop in the temperature of the indoor heat exchanger causes the air conditioner's internal panel, bottom shell and other structural parts to shrink rapidly, resulting in frequent abnormal noises.

[0048] Based on this, the present application proposes a method, device, electronic device and air-conditioning equipment for controlling abnormal noise. The technical solution first makes the air-conditioning equipment run for a set time with a preset valve opening during the freezing stage of self-cleaning of the air-conditioning equipment, and then adjusts the electronic expansion valve and / or fan of the air-conditioning equipment so that the current temperature of the indoor heat exchanger of the air-conditioning equipment can be greater than the first set temperature while meeting the freezing requirements of the freezing stage, thereby reducing the time for the indoor heat exchanger to enter a deep cold state during the freezing stage, reducing the frequency of abnormal noise and the noise value of the abnormal noise.

[0049] Figure 2 This is a flow chart provided by an embodiment of the abnormal noise control method of the present invention. Figure 2 , this embodiment may include the following steps:

[0050] S101. Detect whether the duration of the freezing stage of the air-conditioning equipment in the self-cleaning is greater than the set duration; if the duration of the freezing stage of the air-conditioning equipment in the self-cleaning is less than or equal to the set duration, execute S102; if the duration of the freezing stage of the air-conditioning equipment is greater than the set duration, execute S103.

[0051] After the air-conditioning equipment enters the self-cleaning freezing stage, it is detected whether the duration of the air-conditioning equipment in the self-cleaning freezing stage is greater than the set time. The above set time can be set according to actual conditions, for example, set to 2 minutes or 3 minutes, etc., which is not limited in this embodiment.

[0052] If the duration of the freezing phase of the air-conditioning device during self-cleaning is less than or equal to the set duration, S102 may be executed to control the electronic expansion valve of the air-conditioning device to operate at a preset valve opening. If the duration of the freezing phase of the air-conditioning device during self-cleaning is greater than the set duration, S103 may be executed to adjust the electronic expansion valve and / or fan of the air-conditioning device so that the current temperature of the indoor heat exchanger of the air-conditioning device can be greater than the first set temperature while meeting the freezing requirements of the freezing phase until the freezing phase ends.

[0053] S102, controlling the electronic expansion valve of the air-conditioning equipment to operate at a preset valve opening.

[0054] If it is detected that the duration of the freezing stage of the air-conditioning equipment in the self-cleaning is less than or equal to the set duration, the electronic expansion valve of the air-conditioning equipment is controlled to operate at a preset valve opening. The electronic expansion valve can adjust and control the amount of refrigerant entering the indoor heat exchanger to achieve temperature control of the indoor heat exchanger. In the embodiment of the present application, the specific value of the preset valve opening can be set according to actual conditions, but it should be noted that the preset valve opening must be able to meet the temperature requirements of the indoor heat exchanger in the freezing stage. For example, the preset valve opening can be set to 250P or 300P, etc., which is not limited in this embodiment.

[0055] In an embodiment of the present application, after entering the self-cleaning freezing stage, the air-conditioning equipment is controlled to run at a preset valve opening for a set time, and the temperature of the indoor heat exchanger of the air-conditioning equipment is reduced to achieve the temperature requirements of the freezing stage.

[0056] S103, adjusting the electronic expansion valve and / or the fan of the air-conditioning device so that the current temperature of the indoor heat exchanger of the air-conditioning device can be greater than the first set temperature while meeting the freezing requirement of the freezing stage, until the freezing stage ends.

[0057] If the duration of the freezing phase of the air-conditioning equipment is greater than the set duration, the electronic expansion valve and / or fan of the air-conditioning equipment can be adjusted so that the current temperature of the indoor heat exchanger of the air-conditioning equipment can be greater than the first set temperature while meeting the freezing requirements of the freezing phase until the freezing phase ends.

[0058] More specifically, in order to avoid abnormal noises from the air-conditioning equipment, after the air-conditioning equipment has been running for a set period of time at a preset valve opening, the electronic expansion valve and / or fan of the air-conditioning equipment is adjusted to avoid the temperature of the indoor heat exchanger being too low and entering a deep cooling stage. It should be noted that in order to ensure the self-cleaning effect of the air-conditioning equipment and to ensure that the freezing stage can be completed normally, when adjusting the electronic expansion valve and / or fan of the air-conditioning equipment, the temperature of the indoor heat exchanger cannot be set too high in order to avoid abnormal noises from the air-conditioning equipment. In some embodiments, the current temperature of the indoor heat exchanger of the air-conditioning equipment is greater than the first set temperature while meeting the freezing requirements of the freezing stage until the freezing stage ends.

[0059] The above-mentioned first set temperature includes the lowest temperature at which the air-conditioning device cannot make abnormal noises. That is to say, when the temperature of the indoor heat exchanger is lower than the first set temperature, the probability of abnormal noises in the air-conditioning device will be greatly increased. Setting the current temperature of the indoor heat exchanger of the air-conditioning device to be greater than the first set temperature while meeting the freezing requirements of the freezing stage can reduce the probability of abnormal noises in the air-conditioning device while ensuring that the freezing stage is completed normally. In some embodiments, the first set temperature is obtained through experiments or is set according to actual conditions, which is not limited in this embodiment.

[0060] In the above embodiment, during the freezing stage of the air-conditioning device's self-cleaning, the air-conditioning device can be operated for a set time at a preset valve opening, and the temperature of the indoor heat exchanger of the air-conditioning device can be reduced to meet the temperature requirements of the freezing stage. In the subsequent process of the freezing stage, the electronic expansion valve and / or fan of the air-conditioning device are adjusted so that the current temperature of the indoor heat exchanger of the air-conditioning device can be greater than the first set temperature while meeting the freezing requirements of the freezing stage, wherein the first set temperature includes the lowest temperature at which the air-conditioning device cannot make abnormal noises. With such an arrangement, the temperature of the air-conditioning device during the freezing stage of self-cleaning can be maintained above the first set temperature while meeting the freezing requirements of the freezing stage, thereby avoiding abnormal noises caused by the air-conditioning device due to too low temperature.

[0061] As an optional implementation, another embodiment of the present application discloses that the steps of the above embodiment adjust the electronic expansion valve and / or the fan of the air-conditioning equipment so that the current temperature of the indoor heat exchanger of the air-conditioning equipment can be greater than the first set temperature while meeting the freezing requirements of the freezing stage, which may specifically include the following steps:

[0062] Detect whether the current temperature of the indoor heat exchanger is lower than the second set temperature; if it is detected that the current temperature of the indoor heat exchanger is higher than or equal to the second set temperature, control the electronic expansion valve to reduce the valve opening at a first speed; if it is detected that the current temperature of the indoor heat exchanger is lower than the second set temperature, adjust the electronic expansion valve and / or fan of the air-conditioning equipment according to the relationship between the current temperature of the indoor heat exchanger and the third set temperature; the third set temperature is lower than the second set temperature.

[0063] More specifically, after the duration of the freezing stage of the air conditioner is greater than the set duration, the current temperature of the indoor heat exchanger can be collected. In some embodiments, the current temperature of the indoor heat exchanger is collected once at a set time interval, and the set time interval can be set according to actual conditions, for example, to 5 seconds or 10 seconds, which is not limited in this embodiment.

[0064] Detect whether the current temperature of the indoor heat exchanger is less than the second set temperature. In some embodiments, the second set temperature includes the maximum temperature at which the indoor heat exchanger can meet the freezing requirements of the freezing stage, which can be measured experimentally or set according to actual conditions, and this embodiment does not limit it.

[0065] If it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the second set temperature, it means that the current temperature of the indoor heat exchanger is very high, and it is likely to reach the defrosting temperature and then enter the defrosting stage in advance, affecting the self-cleaning effect of the air-conditioning equipment. In this case, it is necessary to quickly reduce the temperature of the indoor heat exchanger so that the freezing stage can operate normally. Specifically, the electronic expansion valve can be controlled to reduce the valve opening at a first speed, and the faster speed is set as the above-mentioned first speed.

[0066] If it is detected that the current temperature of the indoor heat exchanger is lower than the second set temperature, it means that the current temperature of the indoor heat exchanger can meet the freezing requirements of the freezing stage for a short time. Specifically, it is necessary to determine whether it is necessary to adjust the electronic expansion valve and / or fan of the air-conditioning equipment based on the relationship between the current temperature of the indoor heat exchanger and the third set temperature, so that the current temperature of the indoor heat exchanger of the air-conditioning equipment can be higher than the first set temperature while meeting the freezing requirements of the freezing stage.

[0067] The third set temperature is lower than the second set temperature, and the third set temperature is higher than the first temperature. The third set temperature refers to the tube temperature of the indoor heat exchanger for stable operation. More specifically, the third set temperature is the intercooling temperature. Under normal circumstances, the temperature of the indoor heat exchanger in the freezing stage will be stable near the intercooling temperature, so that the temperature of the indoor heat exchanger of the air-conditioning equipment can be higher than the first set temperature while meeting the freezing requirements in the freezing stage.

[0068] The second set temperature is the sum of the third set temperature and the upper threshold. When the temperature of the indoor heat exchanger is higher than the second set temperature, the temperature of the indoor heat exchanger reaches the defrosting temperature, causing the air-conditioning device to enter the defrosting stage in advance, affecting the self-cleaning effect of the air-conditioning device. The above-mentioned second set temperature and upper threshold can be obtained through experiments or set according to actual conditions, and this embodiment does not limit it. It should be noted that the intermediate cooling temperature is higher than the deep cooling temperature.

[0069] In the above embodiment, when the current temperature of the indoor heat exchanger is high, the temperature of the indoor heat exchanger can be adjusted by adjusting the electronic expansion valve to avoid affecting the self-cleaning effect of the air-conditioning equipment.

[0070] As an optional implementation, another embodiment of the present application discloses that the steps of the above embodiment adjust the electronic expansion valve and / or fan of the air-conditioning equipment according to the relationship between the current temperature of the indoor heat exchanger and the third set temperature, which may specifically include the following steps:

[0071] Detect whether the current temperature of the indoor heat exchanger is less than a third set temperature; if it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the third set temperature, adjust the electronic expansion valve of the air-conditioning equipment according to the current temperature change rate of the indoor heat exchanger; if it is detected that the current temperature of the indoor heat exchanger is less than the third set temperature, adjust the electronic expansion valve and / or fan of the air-conditioning equipment according to the relationship between the current temperature of the indoor heat exchanger and the target temperature; the target temperature includes the temperature of the indoor heat exchanger at the moment when the duration of the freezing stage of the air-conditioning equipment is the set duration.

[0072] Specifically, if it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the third set temperature, it means that although the current temperature of the indoor heat exchanger has not exceeded the second set temperature, it is still at a relatively high temperature state. If the temperature changes rapidly at this time, the current temperature of the indoor heat exchanger may reach or exceed the second set temperature in a short time. In order to avoid this situation, the electronic expansion valve of the air conditioner needs to be adjusted according to the current temperature change speed of the indoor heat exchanger.

[0073] In some embodiments, the electronic expansion valve of the air conditioner is adjusted according to the current temperature change rate of the indoor heat exchanger through the following steps:

[0074] If the current temperature rise rate of the indoor heat exchanger is greater than the first set change rate, the electronic expansion valve is controlled to reduce the valve opening at the first speed; if the current temperature rise rate of the indoor heat exchanger is less than or equal to the first set change rate and greater than the second set change rate, the electronic expansion valve is controlled to reduce the valve opening at the second speed; if the current temperature rise rate of the indoor heat exchanger is less than or equal to the second set change rate, the electronic expansion valve is controlled to maintain the current valve opening.

[0075] The first set change speed is greater than the second set change speed; the first speed is greater than the second speed.

[0076] If the current temperature rise rate of the indoor heat exchanger is greater than the first set change rate, it means that the indoor heat exchanger is heating up faster and may reach or exceed the second set temperature in a short time. In order to avoid this situation, it is necessary to control the electronic expansion valve to reduce the valve opening at the first speed and set the faster speed to the above-mentioned first speed.

[0077] If the current temperature increase speed of the indoor heat exchanger is less than or equal to the first set change speed and greater than the second set change speed, it means that the temperature increase speed of the indoor heat exchanger is slow, and the current temperature of the indoor heat exchanger will reach or exceed the second set temperature after a period of time. In order to avoid this situation, the electronic expansion valve can be controlled to reduce the valve opening at the second speed. Since the current temperature of the indoor heat exchanger will reach or exceed the second set temperature after a period of time, the second speed can be set to be lower than the above-mentioned first speed.

[0078] If the current temperature rise rate of the indoor heat exchanger is less than or equal to the second set change rate, it means that the heating rate of the indoor heat exchanger is very slow, and the current temperature of the indoor heat exchanger will not change much. Then it can be determined that the current temperature of the indoor heat exchanger is stable near the third set temperature, and there is no need to adjust the valve opening of the electronic expansion valve.

[0079] In this way, the valve opening of the electronic expansion valve can be adjusted according to the current temperature rise rate of the indoor heat exchanger to avoid the temperature rising too fast and affecting the self-cleaning function of the air-conditioning equipment.

[0080] Furthermore, if it is detected that the current temperature of the indoor heat exchanger is lower than the third set temperature, it is necessary to determine whether the electronic expansion valve and / or fan of the air-conditioning equipment needs to be adjusted based on the relationship between the current temperature of the indoor heat exchanger and the target temperature, so that the current temperature of the indoor heat exchanger of the air-conditioning equipment can be higher than the first set temperature while meeting the freezing requirements of the freezing stage.

[0081] The target temperature includes the temperature of the indoor heat exchanger when the air-conditioning device is in the freezing stage for a set time. More specifically, the target temperature refers to the cryogenic temperature. When the current temperature of the indoor heat exchanger is stable near the target temperature or lower than the target temperature, the probability of abnormal noise in the air-conditioning device is high. The first set temperature is the difference between the target temperature and the lower threshold. When the temperature of the indoor heat exchanger is lower than the first set temperature, the probability of abnormal noise in the air-conditioning device will become greater. The lower threshold can be set according to the actual situation, and this embodiment does not limit it.

[0082] In some embodiments, the electronic expansion valve and / or fan of the air conditioner is adjusted according to the relationship between the current temperature of the indoor heat exchanger and the target temperature through the following steps:

[0083] If it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the target temperature, the electronic expansion valve of the air-conditioning equipment is adjusted according to the current temperature change rate of the indoor heat exchanger; if it is detected that the current temperature of the indoor heat exchanger is lower than the target temperature, the electronic expansion valve and / or fan of the air-conditioning equipment is adjusted according to the relationship between the current temperature of the indoor heat exchanger and the first set temperature.

[0084] If the current temperature of the indoor heat exchanger is greater than or equal to the target temperature, it means that the current temperature of the indoor heat exchanger is still at a relatively low temperature. If the temperature changes rapidly at this time, the current temperature of the indoor heat exchanger may drop to the first set temperature or below the first set temperature in a short time. In order to avoid this situation, the electronic expansion valve of the air conditioner needs to be adjusted according to the current temperature change speed of the indoor heat exchanger.

[0085] The electronic expansion valve of the air conditioner can be adjusted according to the current temperature change rate of the indoor heat exchanger as follows:

[0086] If the current temperature reduction rate of the indoor heat exchanger is greater than the first set change rate, the electronic expansion valve is controlled to increase the valve opening at the first speed; if the current temperature reduction rate of the indoor heat exchanger is less than or equal to the first set change rate and greater than the second set change rate, the electronic expansion valve is controlled to increase the valve opening at the second speed; if the current temperature reduction rate of the indoor heat exchanger is less than or equal to the second set change rate, the electronic expansion valve is controlled to maintain the current valve opening.

[0087] The first set change speed is greater than the second set change speed; the first speed is greater than the second speed.

[0088] If the current temperature reduction rate of the indoor heat exchanger is greater than the first set change rate, it means that the indoor heat exchanger is cooling down quickly and may drop to the first set temperature or below the first set temperature in a short time. In order to avoid this situation, it is necessary to control the electronic expansion valve to increase the valve opening at the first speed, and set the faster speed to the above-mentioned first speed.

[0089] If the current temperature reduction speed of the indoor heat exchanger is less than or equal to the first set change speed and greater than the second set change speed, it means that the reduction speed of the indoor heat exchanger is slow. After a period of time, the current temperature of the indoor heat exchanger will drop to the first set temperature or below the first set temperature. In order to avoid this situation, the electronic expansion valve can be controlled to increase the valve opening at the second speed. Since the current temperature of the indoor heat exchanger will drop to the first set temperature or below the first set temperature after a period of time, the second speed can be set to be lower than the above-mentioned first speed.

[0090] If the current temperature reduction rate of the indoor heat exchanger is less than or equal to the second set change rate, it means that the cooling rate of the indoor heat exchanger is very slow, and the current temperature of the indoor heat exchanger will not change much. Then it can be determined that the current temperature of the indoor heat exchanger is stable near the third set temperature, and there is no need to adjust the valve opening of the electronic expansion valve.

[0091] In this way, the valve opening of the electronic expansion valve can be adjusted according to the current temperature drop speed of the indoor heat exchanger to avoid abnormal noise in the air-conditioning equipment caused by excessive temperature drop.

[0092] The specific values ​​of the first set change speed, the second set change speed, the first speed and the second speed mentioned above can be set according to actual conditions, and this embodiment does not limit them.

[0093] Furthermore, if it is detected that the current temperature of the indoor heat exchanger is lower than the target temperature, the electronic expansion valve and / or the fan of the air-conditioning equipment is adjusted according to the relationship between the current temperature of the indoor heat exchanger and the first set temperature.

[0094] Specifically, the electronic expansion valve and / or fan of the air-conditioning equipment may be adjusted according to the relationship between the current temperature of the indoor heat exchanger and the first set temperature according to the following steps:

[0095] If it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the first set temperature, the electronic expansion valve is controlled to increase its opening at a first speed; if it is detected that the current temperature of the indoor heat exchanger is less than the first set temperature, the fan is controlled to run at a set speed.

[0096] If it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the first set temperature, it means that the temperature of the indoor heat exchanger is lower than the cryogenic temperature, and the electronic expansion valve needs to increase the valve opening at a faster speed to increase the temperature of the indoor heat exchanger. Specifically, the electronic expansion valve is controlled to increase the opening at a first speed, and the larger speed is set as the first speed.

[0097] If it is detected that the current temperature of the indoor heat exchanger is lower than the first set temperature, it means that the temperature of the indoor heat exchanger has been reduced to a minimum value, and adjusting the valve opening of the electronic expansion valve has no effect, and the fan operation needs to be controlled. Since the indoor fan is greatly affected by the temperature of the indoor heat exchanger, the fan needs to be turned on at a low speed.

[0098] After the set time interval, the current temperature of the indoor heat exchanger can continue to be collected, and the electronic expansion valve and / or fan of the air-conditioning equipment can be adjusted according to the above-mentioned adjustment steps so that the current temperature of the indoor heat exchanger of the air-conditioning equipment can be greater than the first set temperature while meeting the freezing requirements of the freezing stage until the freezing stage ends.

[0099] The indoor heat exchanger in the above embodiment is an evaporator, and the temperature of the indoor heat exchanger is the evaporator tube temperature.

[0100] In a specific embodiment, the following parameters are set:

[0101] T0—Indoor heat exchanger tube temperature at the time of exiting the condensation stage; T 蒸 —Real-time tube temperature of indoor heat exchanger; t1—set duration; T1—deep cooling temperature; P1—preset valve opening; T2—intermediate cooling temperature; Δt1 upper threshold; Δt2—lower threshold; ΔT / dt—current temperature change rate of indoor heat exchanger; P—electronic expansion valve opening; L—fan speed.

[0102] like Figure 3 As shown, the steps of the abnormal noise control method of this embodiment include:

[0103] Before exiting the condensation stage and entering the freezing and thawing stage, the indoor heat exchanger tube temperature is collected as T0. After entering the freezing stage, the electronic expansion valve runs at P1 for t1 time, and collects the indoor heat exchanger tube temperature value T1 at t1, and then enters the real-time judgment link of the indoor heat exchanger tube temperature.

[0104] Check whether T 蒸 <T2+Δt1, if no, it means that the temperature of the indoor heat exchanger is already very high, and it is likely to enter the defrosting temperature, and the electronic expansion valve needs to reduce the valve opening at a faster speed; if yes, it is necessary to further determine whether T 蒸 <T2, if otherwise, it is necessary to judge ΔT / dt. If the pipe temperature rises rapidly, it is necessary to quickly reduce the valve opening to quickly reduce the indoor heat exchanger temperature. If the pipe temperature rises slowly, the indoor heat exchanger temperature can be reduced by reducing the valve opening at a slower speed. If the pipe temperature changes slowly, it means that the pipe temperature is basically maintained near T2, the pipe temperature has reached the target of intercooling, and the valve step maintains the current state without action.

[0105] Further determine whether T 蒸<T1, same as above, if otherwise, it is necessary to judge ΔT / dt. If the pipe temperature drops rapidly, it is necessary to quickly increase the valve opening to quickly increase the indoor heat exchanger temperature. If the pipe temperature drops slowly, the indoor heat exchanger temperature can be increased by increasing the valve opening at a slower speed. If the pipe temperature changes slowly, it means that the pipe temperature is basically maintained near T2, the pipe temperature has reached the target of intercooling, and the valve step maintains the current state without action.

[0106] Further determine whether T 蒸 <T1-Δt2, if no, it means that the indoor heat exchanger temperature has exceeded the initial cryogenic temperature, and the electronic expansion valve needs to increase the valve opening at a faster speed to increase the indoor heat exchanger temperature. If yes, it means that the indoor heat exchanger has dropped to the limit value, and the adjustment of the valve opening has little effect. At this time, the fan needs to be turned on at a low speed L. The internal fan has a greater impact on the indoor heat exchanger tube temperature. Generally, when the fan is turned on, the indoor heat exchanger temperature will rise quickly. After turning on the fan, continue to detect and determine the indoor heat exchanger tube temperature, and the expansion valve will make real-time adjustments. After the freezing stage t1 time, the indoor heat exchanger tube temperature is always determined and the valve opening is adjusted.

[0107] Under certain working conditions, a preferred embodiment is obtained through multiple tests based on the above control logic. The specific control parameters and control logic are as follows:

[0108] Temperature values: T2 = -10°C, Δt1 = 4°C, Δt2 = 4°C;

[0109] Valve opening: P1 = 250P;

[0110] Temperature change rate: M1 = 1 / 5°C / s, M2 = 1 / 10°C / s;

[0111] Valve adjustment speed: N1 = 2P / 5s, N2 = 4P / 5s;

[0112] The whole machine running time: t1 = 3min.

[0113] like Figure 4 As shown, Figure 4 The horizontal axis represents time S, and the vertical axis represents the noise value dB(A). The maximum value of abnormal noise in the freezing stage of the above embodiment is 49dB(A), while the maximum value of abnormal noise in the freezing stage of the original control method is 62dB(A), and the abnormal noise frequency is significantly reduced.

[0114] The present invention also provides a device for controlling abnormal noise, which is used to implement the above method embodiment. Figure 5 1 is a schematic diagram of a structure provided by an embodiment of the abnormal sound control of the present invention. Figure 5 As shown, the device comprises:

[0115] The first control module 100 is used to control the electronic expansion valve of the air-conditioning device to operate at a preset valve opening if the duration of the freezing stage of the air-conditioning device in the self-cleaning is less than or equal to a set duration;

[0116] The second control module 110 is used to adjust the electronic expansion valve and / or fan of the air-conditioning equipment if the duration of the freezing stage of the air-conditioning equipment is greater than the set time, so that the current temperature of the indoor heat exchanger of the air-conditioning equipment can be greater than the first set temperature while meeting the freezing requirements of the freezing stage until the freezing stage ends; the first set temperature includes the lowest temperature at which the air-conditioning equipment cannot make abnormal sounds.

[0117] Furthermore, the second control module 110 is specifically used to: detect whether the current temperature of the indoor heat exchanger is lower than the second set temperature; the second set temperature includes the highest temperature at which the indoor heat exchanger can meet the freezing requirements of the freezing stage; if it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the second set temperature, the electronic expansion valve is controlled to reduce the valve opening at a first speed; if it is detected that the current temperature of the indoor heat exchanger is lower than the second set temperature, the electronic expansion valve and / or fan of the air-conditioning equipment is adjusted according to the relationship between the current temperature of the indoor heat exchanger and the third set temperature; the third set temperature is lower than the second set temperature.

[0118] Furthermore, the second control module 110 is specifically used to: detect whether the current temperature of the indoor heat exchanger is less than a third set temperature; if it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the third set temperature, then adjust the electronic expansion valve of the air-conditioning equipment according to the current temperature change rate of the indoor heat exchanger; if it is detected that the current temperature of the indoor heat exchanger is less than the third set temperature, then adjust the electronic expansion valve and / or fan of the air-conditioning equipment according to the relationship between the current temperature of the indoor heat exchanger and the target temperature; the target temperature includes the temperature of the indoor heat exchanger at the moment when the duration of the freezing stage of the air-conditioning equipment is the set duration.

[0119] Furthermore, the second control module 110 is specifically used to: if the current temperature rise rate of the indoor heat exchanger is greater than the first set change rate, control the electronic expansion valve to reduce the valve opening at a first speed; if the current temperature rise rate of the indoor heat exchanger is less than or equal to the first set change rate and greater than the second set change rate, control the electronic expansion valve to reduce the valve opening at a second speed; if the current temperature rise rate of the indoor heat exchanger is less than or equal to the second set change rate, control the electronic expansion valve to maintain the current valve opening; wherein, the first set change rate is greater than the second set change rate; the first speed is greater than the second speed.

[0120] Furthermore, the second control module 110 is specifically used to: if it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the target temperature, then adjust the electronic expansion valve of the air-conditioning equipment according to the current temperature change rate of the indoor heat exchanger; if it is detected that the current temperature of the indoor heat exchanger is lower than the target temperature, then adjust the electronic expansion valve and / or fan of the air-conditioning equipment according to the relationship between the current temperature of the indoor heat exchanger and the first set temperature.

[0121] Furthermore, the second control module 110 is specifically used to: if the current temperature reduction rate of the indoor heat exchanger is greater than the first set change rate, control the electronic expansion valve to increase the valve opening at a first speed; if the current temperature reduction rate of the indoor heat exchanger is less than or equal to the first set change rate and greater than the second set change rate, control the electronic expansion valve to increase the valve opening at a second speed; if the current temperature reduction rate of the indoor heat exchanger is less than or equal to the second set change rate, control the electronic expansion valve to maintain the current valve opening; wherein, the first set change rate is greater than the second set change rate; the first speed is greater than the second speed.

[0122] Furthermore, the second control module 110 is specifically used to: if it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the first set temperature, control the electronic expansion valve to increase its opening at a first speed; if it is detected that the current temperature of the indoor heat exchanger is less than the first set temperature, control the fan to run at a set speed.

[0123] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0124] Corresponding to the above-mentioned abnormal sound control method, the embodiment of the present application also discloses an electronic device, see Figure 6 As shown, the electronic device includes:

[0125] Memory 200 and processor 210;

[0126] The memory 200 is connected to the processor 210 and is used to store programs;

[0127] The processor 210 is used to implement the abnormal noise control method disclosed in any of the above embodiments by running the program stored in the memory 200.

[0128] Specifically, the electronic device may further include: a bus, a communication interface 220 , an input device 230 and an output device 240 .

[0129] The processor 210, the memory 200, the communication interface 220, the input device 230 and the output device 240 are connected to each other via a bus.

[0130] A bus may include a pathway that transfers information between components of a computer system.

[0131] The processor 210 may be a general-purpose processor, such as a general-purpose central processing unit (CPU), a microprocessor, etc., or an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application. It may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0132] The processor 210 may include a main processor, and may also include a baseband chip, a modem, and the like.

[0133] The memory 200 stores a program for executing the technical solution of the present application, and may also store an operating system and other key services. Specifically, the program may include a program code, and the program code includes computer operation instructions. More specifically, the memory 200 may include a read-only memory (ROM), other types of static storage devices that can store static information and instructions, a random access memory (RAM), other types of dynamic storage devices that can store information and instructions, a disk storage, a flash, and the like.

[0134] The input device 230 may include a device for receiving data and information input by a user, such as a keyboard, a mouse, a camera, a scanner, a light pen, a voice input device, a touch screen, a pedometer, or a gravity sensor.

[0135] Output device 240 may include devices that allow information to be output to a user, such as a display screen, printer, speaker, etc.

[0136] The communication interface 220 may include any transceiver or the like to communicate with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.

[0137] The processor 210 executes the program stored in the memory 200 and calls other devices, which can be used to implement each step of the abnormal sound control method provided in the above embodiment of the present application.

[0138] Furthermore, an embodiment of the present application provides an air-conditioning device, which includes an abnormal sound control device, and the abnormal sound control device is configured to implement each step of the abnormal sound control method provided in the above embodiment of the present application.

[0139] The air-conditioning equipment provided in the present embodiment belongs to the same application concept as the abnormal noise control method provided in the above-mentioned embodiments of the present application, can execute the abnormal noise control method provided in any of the above-mentioned embodiments of the present application, and has functional modules and beneficial effects corresponding to the execution of the above-mentioned abnormal noise control method. For technical details not fully described in this embodiment, please refer to the specific processing content of the abnormal noise control method provided in the above-mentioned embodiments of the present application, which will not be repeated here.

[0140] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0141] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0142] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0143] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0144] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for controlling abnormal noise, characterized in that: include: If the duration of the freezing stage of the air-conditioning device during self-cleaning is less than or equal to the set duration, controlling the electronic expansion valve of the air-conditioning device to operate at a preset valve opening; If the duration of the freezing stage of the air-conditioning equipment is greater than the set duration, the electronic expansion valve and / or fan of the air-conditioning equipment is adjusted so that the current temperature of the indoor heat exchanger of the air-conditioning equipment can be greater than the first set temperature while meeting the freezing requirements of the freezing stage until the freezing stage ends; the first set temperature includes the lowest temperature at which the air-conditioning equipment cannot make abnormal sounds.

2. The method according to claim 1, characterized in that The step of adjusting the electronic expansion valve and / or the fan of the air conditioner so that the current temperature of the indoor heat exchanger of the air conditioner can be greater than the first set temperature while satisfying the freezing requirement of the freezing stage includes: Detecting whether the current temperature of the indoor heat exchanger is less than a second set temperature; the second set temperature includes a maximum temperature at which the indoor heat exchanger can meet the freezing requirement of the freezing stage; If it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the second set temperature, controlling the electronic expansion valve to reduce the valve opening at a first speed; If it is detected that the current temperature of the indoor heat exchanger is lower than the second set temperature, the electronic expansion valve and / or fan of the air-conditioning equipment is adjusted according to the relationship between the current temperature of the indoor heat exchanger and the third set temperature; the third set temperature is lower than the second set temperature.

3. The method according to claim 2, characterized in that The step of adjusting the electronic expansion valve and / or the fan of the air conditioner according to the relationship between the current temperature of the indoor heat exchanger and the third set temperature includes: Detecting whether the current temperature of the indoor heat exchanger is lower than the third set temperature; If it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the third set temperature, adjusting the electronic expansion valve of the air-conditioning equipment according to the current temperature change rate of the indoor heat exchanger; If it is detected that the current temperature of the indoor heat exchanger is lower than the third set temperature, the electronic expansion valve and / or fan of the air-conditioning equipment is adjusted according to the relationship between the current temperature of the indoor heat exchanger and the target temperature; the target temperature includes the temperature of the indoor heat exchanger when the duration of the freezing stage of the air-conditioning equipment is the set duration.

4. The method according to claim 3, characterized in that The step of adjusting the electronic expansion valve of the air-conditioning device according to the current temperature change rate of the indoor heat exchanger includes: If the current temperature increase rate of the indoor heat exchanger is greater than the first set change rate, the electronic expansion valve is controlled to reduce the valve opening at the first speed; if the current temperature increase rate of the indoor heat exchanger is less than or equal to the first set change rate and greater than the second set change rate, the electronic expansion valve is controlled to reduce the valve opening at the second speed; if the current temperature increase rate of the indoor heat exchanger is less than or equal to the second set change rate, the electronic expansion valve is controlled to maintain the current valve opening; Among them, the first set change speed is greater than the second set change speed; the first speed is greater than the second speed.

5. The method according to claim 3, characterized in that: The step of adjusting the electronic expansion valve and / or the fan of the air conditioner according to the relationship between the current temperature of the indoor heat exchanger and the target temperature includes: If it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the target temperature, adjusting the electronic expansion valve of the air-conditioning equipment according to the current temperature change rate of the indoor heat exchanger; If it is detected that the current temperature of the indoor heat exchanger is lower than the target temperature, the electronic expansion valve and / or the fan of the air-conditioning equipment is adjusted according to the relationship between the current temperature of the indoor heat exchanger and the first set temperature.

6. The method according to claim 5, characterized in that The step of adjusting the electronic expansion valve of the air-conditioning device according to the current temperature change rate of the indoor heat exchanger includes: If the current temperature reduction speed of the indoor heat exchanger is greater than the first set change speed, the electronic expansion valve is controlled to increase the valve opening at the first speed; if the current temperature reduction speed of the indoor heat exchanger is less than or equal to the first set change speed and greater than the second set change speed, the electronic expansion valve is controlled to increase the valve opening at the second speed; if the current temperature reduction speed of the indoor heat exchanger is less than or equal to the second set change speed, the electronic expansion valve is controlled to maintain the current valve opening; Among them, the first set change speed is greater than the second set change speed; the first speed is greater than the second speed.

7. The method according to claim 5, characterized in that The step of adjusting the electronic expansion valve and / or the fan of the air conditioner according to the relationship between the current temperature of the indoor heat exchanger and the first set temperature includes: If it is detected that the current temperature of the indoor heat exchanger is greater than or equal to the first set temperature, controlling the electronic expansion valve to increase its opening at a first speed; If it is detected that the current temperature of the indoor heat exchanger is lower than the first set temperature, the fan is controlled to run at a set speed.

8. A control device for self-cleaning abnormal noise, characterized in that: include: A first control module, configured to control the electronic expansion valve of the air-conditioning device to operate at a preset valve opening if the duration of the freezing stage of the self-cleaning of the air-conditioning device is less than or equal to a set duration; The second control module is used to adjust the electronic expansion valve and / or fan of the air-conditioning equipment if the duration of the freezing stage of the air-conditioning equipment is greater than the set time, so that the current temperature of the indoor heat exchanger of the air-conditioning equipment can be greater than the first set temperature while meeting the freezing requirements of the freezing stage until the freezing stage ends; the first set temperature includes the lowest temperature at which the air-conditioning equipment cannot make abnormal sounds.

9. An electronic device, characterized in that: The invention comprises a processor and a memory, wherein the processor is connected to the memory: Wherein, the processor is used to call and execute the program stored in the memory; The memory is used to store the program, and the program is at least used to execute the method according to any one of claims 1 to 7.

10. An air conditioning device, characterized in that: It comprises an abnormal sound control device; the abnormal sound control device is configured to be able to execute the method according to any one of claims 1 to 7.

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