Air conditioner evaporator peculiar smell prevention control method, device and system and air conditioner

Abstract

The invention discloses an air conditioner evaporator peculiar smell prevention control method, device and system and an air conditioner, and belongs to the field of air conditioner peculiar smell prevention. When the air conditioner runs, if it is detected that the compressor stops, the frequency of the compressor before stopping is obtained, and then whether the compressor stops due to the fact that the frequency before stopping reaches the set lower limit frequency of the current compressor or not is judged; if yes, the set lower limit frequency of the target compressor is calculated, if the set lower limit frequency of the target compressor is larger than or equal to the preset minimum lower limit frequency of the compressor, the value of the current set lower limit frequency of the compressor is updated to be the value of the set lower limit frequency of the target compressor, and the compressor is controlled to operate after the preset time interval; in this way, the compressor can be controlled not to stop, it is guaranteed that the temperature of the evaporator is low, peculiar smell volatilization is avoided, a user cannot feel peculiar smell, and the user experience is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioner odor prevention, and in particular, to an air conditioner evaporator odor prevention control method, device, system and air conditioner. Background Art

[0002] As people's living standards improve, their focus on air conditioners is not only on their capabilities and energy efficiency, but their demand for comfort is also gradually increasing.

[0003] Due to the high humidity content in the air in summer, when the wet air with a large amount of water meets the low-temperature evaporator, condensed water will form on the surface of the evaporator. The condensed water will condense on the surface of the evaporator and around the drain port, and then combine with the dust and dirt inhaled in the air, and the humid environment will produce a large amount of mold, thus producing odor. In the operation of existing variable frequency air conditioners, the compressor often stops and then restarts after a while.

[0004] During the process of the compressor stopping and restarting, the indoor fan remains on, and the odor on the surface of the evaporator will be brought out, giving the user a poor feeling and greatly affecting the user experience. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the present application provides an air conditioner evaporator anti-odor control method, device, system and air conditioner to solve the problem in the prior art that during the process of stopping and restarting the compressor, the indoor fan remains on, and the odor on the surface of the evaporator will be brought out, which brings a poor feeling to the user and greatly affects the user experience.

[0006] The technical solution adopted by this application to solve its technical problem is:

[0007] In a first aspect, a method for controlling odor of an air conditioner evaporator is provided, comprising:

[0008] When the air conditioner is running, if the compressor is detected to be shut down, the pre-shutdown frequency of the compressor is obtained, where the pre-shutdown frequency is the frequency of the compressor when responding to a shutdown instruction;

[0009] When the operating frequency before shutdown is equal to the current compressor setting lower limit frequency, the target compressor setting lower limit frequency is obtained, and the target compressor setting lower limit frequency = the current compressor setting lower limit frequency - the frequency correction value;

[0010] If the target compressor lower limit frequency setting is greater than or equal to the preset minimum compressor lower limit frequency, the current compressor lower limit frequency setting value is updated to the target lower limit frequency setting value, and the compressor is controlled to run after a preset time interval.

[0011] Furthermore, it also includes:

[0012] Acquire the inner tube temperature of the evaporator after the compressor is shut down and the target number of shutdowns of the compressor, where the target number of shutdowns is the number of shutdowns in which the single shutdown duration of the compressor is less than a threshold value;

[0013] The frequency correction value is determined according to the evaporator inner tube temperature and the target shutdown number.

[0014] Further, determining the frequency correction value according to the evaporator inner tube temperature and the target shutdown number includes:

[0015] When the evaporator inner tube temperature is lower than the preset inner tube temperature, the frequency correction value is determined according to a first calculation formula, and the first calculation formula is as follows:

[0016] Frequency correction value = target number of shutdowns * first frequency correction coefficient.

[0017] Further, determining the frequency correction value according to the evaporator inner tube temperature and the target shutdown number includes:

[0018] When the evaporator inner tube temperature is greater than or equal to the preset inner tube temperature, the frequency correction value is determined according to a second calculation formula, and the second calculation formula is as follows:

[0019] Frequency correction value=the nth power of the second frequency correction coefficient, wherein n is the target number of shutdown times.

[0020] Furthermore, it also includes:

[0021] If the target compressor lower limit frequency setting is less than the minimum compressor lower limit frequency, the current compressor lower limit frequency setting value is maintained unchanged, and the compressor is controlled to operate after the preset time interval.

[0022] Furthermore, it also includes:

[0023] When the compressor is stopped, determining a target speed of the indoor fan;

[0024] If the target speed is greater than or equal to a preset minimum speed, the indoor fan is controlled to run at the target speed; if the target speed is less than the minimum speed, the indoor fan is controlled to run at the minimum speed.

[0025] Further, determining the target speed of the indoor fan includes:

[0026] When the compressor stops, the actual speed of the indoor fan is obtained, and the timing is started to obtain the shutdown time of the compressor, wherein the actual speed is the speed of the indoor fan when the compressor stops;

[0027] determining a rotation speed correction value based on the downtime, wherein the longer the downtime is, the lower the rotation speed correction value is;

[0028] A target speed is obtained based on the actual speed and the speed correction value, where target speed=actual speed-speed correction value.

[0029] Further, determining the rotation speed correction value based on the downtime duration includes:

[0030] When the downtime is less than the preset downtime, the speed correction value is determined according to a third calculation formula, and the third calculation formula is as follows:

[0031] Speed ​​correction value = downtime * first motor speed correction coefficient.

[0032] Further, determining the rotation speed correction value based on the downtime duration includes:

[0033] When the downtime is greater than or equal to the preset downtime, the speed correction value is determined according to a fourth calculation formula, and the fourth calculation formula is as follows:

[0034] The speed correction value=the tth power of the second motor speed correction coefficient, wherein t is the shutdown time.

[0035] Furthermore, it also includes:

[0036] When the temperature of the inner tube of the evaporator is less than or equal to a threshold value, the wind speed of the indoor fan is controlled to be an actual wind speed, and the actual speed is the speed of the indoor fan when the compressor is stopped.

[0037] In a second aspect, an air conditioner evaporator anti-odor control device is provided, comprising:

[0038] A pre-stop frequency acquisition module, used for acquiring the pre-stop frequency of the compressor when the compressor is detected to be stopped during the operation of the air conditioner, wherein the pre-stop frequency is the frequency of the compressor when responding to the stop instruction;

[0039] A target lower limit frequency acquisition module is used to acquire a target compressor set lower limit frequency when the operating frequency before shutdown is equal to the current compressor set lower limit frequency, wherein the target compressor set lower limit frequency = the current compressor set lower limit frequency - frequency correction value;

[0040] The current lower limit frequency adjustment module is used to update the value of the current compressor lower limit frequency setting to the value of the target lower limit frequency setting if the target compressor lower limit frequency setting is greater than or equal to the preset minimum compressor lower limit frequency, and control the compressor to run after a preset time interval.

[0041] In a third aspect, an air conditioner evaporator anti-odor control system is provided, comprising:

[0042] at least one processor and at least one memory;

[0043] The memory stores executable instructions of the processor;

[0044] The processor is configured to execute the above-mentioned air conditioner evaporator anti-odor control method.

[0045] In a fourth aspect, an air conditioner is provided, applying the above-mentioned air conditioner evaporator anti-odor control method.

[0046] Beneficial effects:

[0047] The technical solution of the present application provides an air conditioner evaporator anti-odor control method, device, system and air conditioner. When the air conditioner is running, if the compressor is detected to be shut down, the frequency before the compressor is shut down is obtained, and then it is determined whether the reason for the compressor to shut down is because the frequency before the shutdown reaches the current compressor set lower limit frequency; if so, the target compressor set lower limit frequency is calculated, and if the target compressor set lower limit frequency is greater than or equal to the preset minimum compressor lower limit frequency, the current compressor set lower limit frequency value is updated to the target set lower limit frequency value, and the compressor is controlled to run after a preset interval. In this way, the compressor can be controlled not to shut down, ensuring that the temperature of the evaporator is low, and no odor will be volatilized. The user cannot feel the odor, which greatly improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present application 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0049] Figure 1 This is a flow chart of an air conditioner evaporator anti-odor control method provided in an embodiment of the present application;

[0050] Figure 2 This is a flow chart of a specific air conditioner evaporator anti-odor control method provided in an embodiment of the present application;

[0051] Figure 3 It is a schematic structural diagram of an air-conditioning evaporator anti-odor control device provided in an embodiment of the present application;

[0052] Figure 4 It is a schematic diagram of the structure of an air-conditioning evaporator anti-odor control system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application is described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other implementation methods obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0054] The prior art has the following solution to prevent odor: the water film coverage is determined by the inner tube temperature Tn, and the water film completely covers the surface of the evaporator fins to prevent the air conditioner from blowing out the unpleasant smell on the evaporator fins. However, the presence of the water film will increase the mold on the evaporator surface, exacerbating the generation of odor.

[0055] In response to this problem, this patent application proposes to detect the operating frequency and duration of the compressor when it is shut down, and combine the temperature of the evaporator inner tube and the number of compressor shutdowns to correct the lower limit frequency of the compressor and the speed corresponding to the wind speed set by the user after the compressor is shut down, so as to prevent the air conditioner evaporator from emitting odor.

[0056] Reference Figure 1 The present application provides an air conditioner evaporator anti-odor control method, comprising:

[0057] S11: When the air conditioner is running, if it is detected that the compressor is shut down, the frequency before the compressor is shut down is obtained, and the frequency before the compressor is shut down is the frequency when the compressor responds to the shutdown instruction.

[0058] It should be noted that when the present application scheme is applied to the air conditioner when it is operating normally and is not shut down, it first monitors whether the compressor is shut down. If it is shut down, the frequency before the shutdown is obtained.

[0059] S12: when the operating frequency before shutdown is equal to the current compressor setting lower limit frequency, obtaining the target compressor setting lower limit frequency, the target compressor setting lower limit frequency = the current compressor setting lower limit frequency - the frequency correction value;

[0060] In one embodiment, the frequency correction value is a fixed value, which is set based on experience.

[0061] In another embodiment, the frequency correction value is a dynamic value, which is specifically as follows: the temperature of the inner tube of the evaporator after the compressor is shut down and the target number of shutdowns of the compressor are obtained, the target number of shutdowns being the number of shutdowns in which a single shutdown duration of the compressor is less than a threshold; the frequency correction value is determined based on the temperature of the inner tube of the evaporator and the target number of shutdowns.

[0062] In some embodiments, determining the frequency correction value according to the evaporator inner tube temperature and the target shutdown number includes:

[0063] When the evaporator inner tube temperature is lower than the preset inner tube temperature, the frequency correction value is determined according to a first calculation formula, and the first calculation formula is as follows:

[0064] Frequency correction value = target number of shutdowns * first frequency correction coefficient.

[0065] At this time, when the temperature of the inner tube of the evaporator is greater than or equal to the preset inner tube temperature, the frequency correction value can be a fixed value. The following method can also be used:

[0066] When the evaporator inner tube temperature is greater than or equal to the preset inner tube temperature, the frequency correction value is determined according to a second calculation formula, and the second calculation formula is as follows:

[0067] Frequency correction value=the nth power of the second frequency correction coefficient, wherein n is the target number of shutdown times.

[0068] In some other embodiments, determining the frequency correction value according to the evaporator inner tube temperature and the target shutdown number includes:

[0069] When the evaporator inner tube temperature is greater than or equal to the preset inner tube temperature, the frequency correction value is determined according to a second calculation formula, and the second calculation formula is as follows:

[0070] Frequency correction value=the nth power of the second frequency correction coefficient, wherein n is the target number of shutdown times.

[0071] When the inner tube temperature of the evaporator is lower than the preset inner tube temperature, a fixed value may be used, or the first calculation formula may be used for calculation.

[0072] S13: If the target compressor lower limit frequency setting is greater than or equal to the preset minimum compressor lower limit frequency, the current compressor lower limit frequency setting value is updated to the target lower limit frequency setting value, and the compressor is controlled to run after a preset time interval.

[0073] If the target compressor lower limit frequency setting is less than the minimum compressor lower limit frequency, the current compressor lower limit frequency setting value is maintained unchanged, and the compressor is controlled to operate after the preset time interval.

[0074] It should be noted that in some embodiments, no matter what the reason for the shutdown is, as long as the shutdown is detected and the target compressor set lower limit frequency is greater than or equal to the minimum compressor lower limit frequency, the current compressor set lower limit frequency value is updated to the target set lower limit frequency value, and the compressor is controlled to run after a preset interval.

[0075] As a preferred implementation method in the embodiment of the present application, it also includes:

[0076] When the compressor is stopped, the target speed of the indoor fan is determined; if the target speed is greater than or equal to a preset minimum speed, the indoor fan is controlled to run at the target speed; if the target speed is less than the minimum speed, the indoor fan is controlled to run at the minimum speed.

[0077] In one embodiment, the rotation speed of the indoor fan may be determined according to the indoor temperature or according to the temperature of the inner tube of the evaporator. For example, the higher the temperature of the inner tube of the evaporator, the lower the wind speed.

[0078] In another embodiment, determining a target speed of the indoor fan includes:

[0079] When the compressor stops, the actual speed of the indoor fan is obtained, and the timing is started to obtain the shutdown time of the compressor. The actual speed is the speed of the indoor fan when the compressor stops; a speed correction value is determined based on the shutdown time, and the longer the shutdown time, the lower the speed correction value; based on the actual speed and the speed correction value, a target speed is obtained, and the target speed = actual speed - speed correction value.

[0080] In some embodiments, determining the rotation speed correction value based on the downtime duration includes:

[0081] When the downtime is less than the preset downtime, the speed correction value is determined according to a third calculation formula, and the third calculation formula is as follows:

[0082] Speed ​​correction value = downtime * first motor speed correction coefficient.

[0083] When the downtime is greater than or equal to the preset downtime, the speed correction value may be a fixed value, or may be determined according to a fourth calculation formula, which is as follows:

[0084] The speed correction value=the tth power of the second motor speed correction coefficient, wherein t is the shutdown time.

[0085] In some other embodiments, determining the rotation speed correction value based on the downtime duration includes:

[0086] When the downtime is greater than or equal to the preset downtime, the speed correction value is determined according to a fourth calculation formula, and the fourth calculation formula is as follows:

[0087] The speed correction value=the tth power of the second motor speed correction coefficient, wherein t is the shutdown time.

[0088] When the downtime duration is less than a preset downtime duration, a fixed value may be used, or the downtime duration may be calculated according to a third calculation formula.

[0089] In actual use, it also includes:

[0090] When the temperature of the evaporator inner tube is less than or equal to the threshold, the wind speed of the indoor fan is controlled to be the actual wind speed, and the actual speed is the speed of the indoor fan when the compressor is stopped. Because when the temperature of the evaporator inner tube is less than or equal to the threshold, the odor is less volatilized at this time. If the indoor fan continues to run at a low wind speed, it will affect the air volume of the air conditioner, and then cause the indoor temperature to not meet the user's needs.

[0091] The air-conditioning evaporator anti-odor control method provided in the embodiment of the present application, when the air-conditioning is running, if the compressor is detected to be shut down, the frequency of the compressor before shutdown is obtained, and then it is determined whether the reason for the shutdown of the compressor is because the frequency before shutdown reaches the current compressor set lower limit frequency; if so, the target compressor set lower limit frequency is calculated, and if the target compressor set lower limit frequency is greater than or equal to the preset minimum compressor lower limit frequency, the value of the current compressor set lower limit frequency is updated to the value of the target set lower limit frequency, and the compressor is controlled to run after a preset interval. In this way, the compressor can be controlled without shutting down, ensuring that the temperature of the evaporator is low, and the volatilization of odor will not occur. The user cannot feel the odor, which greatly improves the user experience.

[0092] In order to more specifically describe the solution of this application, Figure 2 As shown, a specific implementation method is provided.

[0093] If the air conditioner stops running, it is usually because the compressor runs to its lower frequency limit. Therefore, this patent designs the following control method to solve this problem:

[0094] During the operation of the air conditioner, if the system detects that the compressor is in a shutdown state, the system determines whether the frequency f1 before the compressor is shut down is equal to the lower limit frequency f2 set for the compressor;

[0095] If yes, the lower frequency limit of the compressor is corrected according to the following formula:

[0096] That is: the lower limit frequency f3 after compressor correction = the lower limit frequency f2 set by compressor - frequency correction value F,

[0097] The corrected lower frequency f3 of the compressor should not be less than the lowest lower frequency of the compressor allowed by the system. The frequency correction value F is related to the temperature T of the inner tube of the evaporator.

[0098] If the temperature T of the evaporator inner tube is low, the frequency correction value F is small. At this time, the frequency correction value F = nd, where n is the number of compressor shutdowns and d is the first frequency correction coefficient, which varies with the unit configuration. For example, the d value for a small household unit is small, while the d value for a large commercial unit is large.

[0099] If the temperature T of the evaporator inner tube is higher, the frequency correction value F is larger. At this time, the frequency correction value F = q n , n is the number of times the air conditioner is actively shut down due to reaching the lower limit frequency, q is the second frequency correction coefficient, which varies with the random unit configuration, that is, the q value of a small household unit is smaller, the q value of a large commercial unit is larger, and q>d.

[0100] Because when the temperature T of the inner tube of the evaporator is higher, the odor of the evaporator is more likely to be emitted after the air conditioner is running, so the lower limit frequency of the compressor needs to be lowered to ensure that the air conditioner remains in operation and can continuously output cold air and the compressor runs without stopping, thereby lowering the temperature of the inner tube of the evaporator and reducing the emission of odor from the evaporator; when the temperature T of the inner tube of the evaporator is lower, the odor of the air conditioner evaporator perceived by the human body is lighter, but the lower limit frequency of the compressor also needs to be slightly lowered to ensure that the compressor runs without stopping.

[0101] In addition, the air conditioner detects the downtime t of the compressor and corrects the speed corresponding to the wind speed set by the user after the compressor stops according to the following formula:

[0102] That is: the speed of the internal fan after the compressor stops r1 = the speed corresponding to the wind speed set by the user after the compressor stops r2-speed correction value R,

[0103] Here, after the compressor stops, the internal fan speed r1 should not be less than the minimum speed allowed by the system. Here, the speed correction value R is related to the compressor stop time t.

[0104] If the compressor downtime t is shorter, the speed correction value R is smaller. At this time, the speed correction value R = tD, where t is the downtime of the compressor and D is the speed correction coefficient of the first motor, which varies with the unit configuration. That is, the D value of a small household unit is smaller, and the D value of a large commercial unit is larger.

[0105] If the compressor downtime t is longer, the D correction value will be larger. At this time, D correction value = Q t , t is the downtime of the compressor, Q is the motor speed correction coefficient, which varies with the unit configuration, that is, the Q value of a small household unit is smaller, the Q value of a large commercial unit is larger, and Q>D.

[0106] Because, when the air-conditioning compressor is shut down for a longer time, the evaporator tube temperature T will be higher, and the evaporator odor will be stronger, so the internal fan speed will be reduced to reduce the odor volatilization; when the air-conditioning compressor is shut down for a shorter time, the evaporator tube temperature T will be lower, and the air-conditioning evaporator odor perceived by the human body will be lighter, but the odor will still exist, and the internal fan speed should also be appropriately reduced at this time.

[0107] After the compressor stops, the air conditioner runs at the internal fan speed r1 until the evaporator inner tube temperature T drops to a certain value (this value varies with the air conditioner configuration, it is higher for large commercial units and lower for small household units. This value must ensure that the odor of the air conditioner evaporator perceived by the human body is lighter). The indoor motor resumes the speed corresponding to the wind speed currently set by the user, and the duration of this process should not be too long, otherwise it will affect the thermal comfort experience of the human body.

[0108] It should be noted that the odor is caused by bacteria growing on the evaporator surface caused by dust and other substances attached to the surface of the fins. Therefore, it is difficult to expel it during the use of the air conditioner, otherwise it will affect the human comfort experience.

[0109] If you want to eliminate it, when the system detects the existence of an odor problem (you can do this by setting up a microbial detector in the air duct, etc.), you can use a prompt light to feedback to the user whether to perform the evaporator self-cleaning function. If the user happens to turn on the self-cleaning function at this time, the air conditioner can spontaneously perform the evaporator self-cleaning after the user turns it off; if the user agrees to turn on the evaporator self-cleaning function at this time, you can turn it on through the remote control; if the user does not turn on the evaporator self-cleaning function at this time (this situation should account for the majority), the air conditioner will execute according to the control method of this patent application to ensure the user's comfort experience.

[0110] In addition, for air conditioners with fresh air, you can also increase the speed of the fresh air fan to increase the proportion of fresh air in the air-conditioned air supplied, dilute the odor, and at the same time satisfy the user's comfort experience.

[0111] The embodiment of the present application detects the operating frequency and the length of time the compressor is shut down, and combines the tube temperature in the evaporator and the number of times the compressor is shut down to correct the lower limit frequency of the compressor and the speed corresponding to the wind speed set by the user after the compressor is shut down, so as to prevent the air conditioner evaporator from emitting odor.

[0112] Based on the same inventive concept, Figure 3 As shown, the present application also provides 11. an air conditioner evaporator anti-odor control device 30, comprising:

[0113] The pre-stop frequency acquisition module 31 is used to acquire the pre-stop frequency of the compressor if the compressor is detected to be stopped during the operation of the air conditioner. The pre-stop frequency is the frequency of the compressor when responding to the stop instruction.

[0114] A target lower limit frequency acquisition module 32 is used to acquire a target compressor lower limit frequency when the operating frequency before shutdown is equal to the current compressor lower limit frequency, wherein the target compressor lower limit frequency = the current compressor lower limit frequency - the frequency correction value;

[0115] Among them, it also includes:

[0116] Acquire the inner tube temperature of the evaporator after the compressor is shut down and the target number of shutdowns of the compressor, where the target number of shutdowns is the number of shutdowns in which the single shutdown duration of the compressor is less than a threshold value;

[0117] The frequency correction value is determined according to the evaporator inner tube temperature and the target shutdown number.

[0118] Further, determining the frequency correction value according to the evaporator inner tube temperature and the target shutdown number includes:

[0119] When the evaporator inner tube temperature is lower than the preset inner tube temperature, the frequency correction value is determined according to a first calculation formula, and the first calculation formula is as follows:

[0120] Frequency correction value = target number of shutdowns * first frequency correction coefficient.

[0121] When the evaporator inner tube temperature is greater than or equal to the preset inner tube temperature, the frequency correction value is determined according to a second calculation formula, and the second calculation formula is as follows:

[0122] Frequency correction value=the nth power of the second frequency correction coefficient, wherein n is the target number of shutdown times.

[0123] The current lower limit frequency adjustment module 33 is used to update the value of the current compressor lower limit frequency setting to the value of the target lower limit frequency setting if the target compressor lower limit frequency setting is greater than or equal to the preset minimum compressor lower limit frequency, and control the compressor to run after a preset time interval.

[0124] If the target compressor lower limit frequency setting is less than the minimum compressor lower limit frequency, the current compressor lower limit frequency setting value is maintained unchanged, and the compressor is controlled to operate after the preset time interval.

[0125] As a preferred implementation of the embodiment of the present application, when the compressor is stopped, a target speed of the indoor fan is determined;

[0126] If the target speed is greater than or equal to a preset minimum speed, the indoor fan is controlled to run at the target speed; if the target speed is less than the minimum speed, the indoor fan is controlled to run at the minimum speed.

[0127] The target speed of the indoor fan is determined by:

[0128] When the compressor stops, the actual speed of the indoor fan is obtained, and the timing is started to obtain the shutdown time of the compressor, wherein the actual speed is the speed of the indoor fan when the compressor stops;

[0129] determining a rotation speed correction value based on the downtime, wherein the longer the downtime is, the lower the rotation speed correction value is;

[0130] A target speed is obtained based on the actual speed and the speed correction value, where target speed=actual speed-speed correction value.

[0131] Further, determining the rotation speed correction value based on the downtime duration includes:

[0132] When the downtime is less than the preset downtime, the speed correction value is determined according to a third calculation formula, and the third calculation formula is as follows:

[0133] Speed ​​correction value = downtime * first motor speed correction coefficient.

[0134] When the downtime is greater than or equal to the preset downtime, the speed correction value is determined according to a fourth calculation formula, and the fourth calculation formula is as follows:

[0135] The speed correction value=the tth power of the second motor speed correction coefficient, wherein t is the shutdown time.

[0136] In addition, when the temperature of the inner tube of the evaporator is less than or equal to a threshold value, the wind speed of the indoor fan is controlled to be an actual wind speed, and the actual speed is the speed of the indoor fan when the compressor is stopped.

[0137] The air-conditioning evaporator anti-odor control device provided in the embodiment of the present application, when the air-conditioning is running, if the compressor is detected to be shut down, the frequency of the compressor before shutdown is obtained, and then it is determined whether the reason for the shutdown of the compressor is because the frequency before shutdown reaches the current compressor set lower limit frequency; if so, the target compressor set lower limit frequency is calculated, and if the target compressor set lower limit frequency is greater than or equal to the preset minimum compressor lower limit frequency, the value of the current compressor set lower limit frequency is updated to the value of the target set lower limit frequency, and the compressor is controlled to run after a preset interval. In this way, the compressor can be controlled without shutting down, ensuring that the temperature of the evaporator is low, and the volatilization of odor will not occur. The user cannot feel the odor, which greatly improves the user experience.

[0138] Based on the same inventive concept, Figure 4 As shown, the present application also provides an air conditioner evaporator anti-odor control system 40, comprising:

[0139] at least one processor 41 and at least one memory 42;

[0140] The memory stores executable instructions of the processor;

[0141] The processor is configured to execute the air conditioner evaporator anti-odor control method provided in the above embodiment.

[0142] The air conditioner evaporator anti-odor control system provided by the embodiment of the present application stores executable instructions of the processor in the memory. When the executable instructions are executed, the processor can obtain the pre-stop frequency of the compressor if the compressor is detected to be stopped during the operation of the air conditioner, and then determine whether the reason for the compressor stopping is because the pre-stop frequency reaches the current compressor set lower limit frequency; if so, calculate the target compressor set lower limit frequency, if the target compressor set lower limit frequency is greater than or equal to the preset minimum compressor lower limit frequency, then update the current compressor set lower limit frequency value to the target set lower limit frequency value, and control the compressor to run after a preset interval, so that the compressor can be controlled not to stop, ensure that the temperature of the evaporator is low, will not cause the volatilization of odor, the user will not feel the odor, and greatly improve the user experience. .

[0143] Based on the same inventive concept, the present application also provides an air conditioner, which uses the air conditioner evaporator anti-odor control method provided in the above embodiment.

[0144] The air conditioner provided in the embodiment of the present application, by applying the air conditioner evaporator anti-odor control method provided in the above embodiment, can, when the air conditioner is running, if the compressor is detected to be shut down, obtain the frequency of the compressor before shutdown, and then determine whether the reason for the compressor shutdown is because the frequency before shutdown reaches the current compressor set lower limit frequency; if so, calculate the target compressor set lower limit frequency, if the target compressor set lower limit frequency is greater than or equal to the preset minimum compressor lower limit frequency, then update the value of the current compressor set lower limit frequency to the value of the target set lower limit frequency, and control the compressor to run after a preset interval, so that the compressor can be controlled without stopping, ensuring that the temperature of the evaporator is low, and will not cause the volatilization of odor, and the user will not feel the odor, which greatly improves the user experience.

[0145] It should be noted that, in the description of this application, 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 this application, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0146] 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.

Claims

1. A method for preventing odor from entering an air conditioner evaporator, characterized in that: include: When the air conditioner is running, if the compressor is detected to be shut down, the pre-shutdown frequency of the compressor is obtained, where the pre-shutdown frequency is the frequency of the compressor when responding to a shutdown instruction; When the operating frequency before shutdown is equal to the current compressor setting lower limit frequency, the target compressor setting lower limit frequency is obtained, and the target compressor setting lower limit frequency = the current compressor setting lower limit frequency - the frequency correction value; If the target compressor lower limit frequency setting is greater than or equal to the preset minimum compressor lower limit frequency, the current compressor lower limit frequency setting value is updated to the target lower limit frequency setting value, and the compressor is controlled to run after a preset time interval.

2. The method according to claim 1, characterized in that: Also includes: Acquire the inner tube temperature of the evaporator after the compressor is shut down and the target number of shutdowns of the compressor, where the target number of shutdowns is the number of shutdowns in which the single shutdown duration of the compressor is less than a threshold value; The frequency correction value is determined according to the evaporator inner tube temperature and the target shutdown number.

3. The method according to claim 2, characterized in that: The determining the frequency correction value according to the evaporator inner tube temperature and the target shutdown number includes: When the evaporator inner tube temperature is lower than the preset inner tube temperature, the frequency correction value is determined according to a first calculation formula, and the first calculation formula is as follows: Frequency correction value = target number of shutdowns * first frequency correction coefficient.

4. The method according to claim 2, characterized in that: The determining the frequency correction value according to the evaporator inner tube temperature and the target shutdown number includes: When the evaporator inner tube temperature is greater than or equal to the preset inner tube temperature, the frequency correction value is determined according to a second calculation formula, and the second calculation formula is as follows: Frequency correction value=the nth power of the second frequency correction coefficient, wherein n is the target number of shutdown times.

5. The method according to claim 1, characterized in that Also includes: If the target compressor lower limit frequency setting is less than the minimum compressor lower limit frequency, the current compressor lower limit frequency setting value is maintained unchanged, and the compressor is controlled to operate after the preset time interval.

6. The method according to claim 1, characterized in that Also includes: When the compressor is stopped, determining a target speed of the indoor fan; If the target speed is greater than or equal to a preset minimum speed, the indoor fan is controlled to run at the target speed; if the target speed is less than the minimum speed, the indoor fan is controlled to run at the minimum speed.

7. The method according to claim 6, characterized in that: Determining the target speed of the indoor fan includes: When the compressor stops, the actual speed of the indoor fan is obtained, and the timing is started to obtain the shutdown time of the compressor, wherein the actual speed is the speed of the indoor fan when the compressor stops; determining a rotation speed correction value based on the downtime, wherein the longer the downtime is, the lower the rotation speed correction value is; A target speed is obtained based on the actual speed and the speed correction value, where target speed=actual speed-speed correction value.

8. The method according to claim 7, characterized in that: The determining of the rotation speed correction value based on the downtime duration includes: When the downtime is less than the preset downtime, the speed correction value is determined according to a third calculation formula, and the third calculation formula is as follows: Speed ​​correction value = downtime * first motor speed correction coefficient.

9. The method according to claim 7, characterized in that: The determining of the rotation speed correction value based on the downtime duration includes: When the downtime is greater than or equal to the preset downtime, the speed correction value is determined according to a fourth calculation formula, and the fourth calculation formula is as follows: The speed correction value=the tth power of the second motor speed correction coefficient, wherein t is the shutdown time.

10. The method according to claim 6, characterized in that Also includes: When the temperature of the inner tube of the evaporator is less than or equal to a threshold value, the wind speed of the indoor fan is controlled to be an actual wind speed, and the actual speed is the speed of the indoor fan when the compressor is stopped.

11. An air conditioner evaporator anti-odor control device, characterized in that: include: A pre-stop frequency acquisition module, used for acquiring the pre-stop frequency of the compressor when the compressor is detected to be stopped during the operation of the air conditioner, wherein the pre-stop frequency is the frequency of the compressor when responding to the stop instruction; A target lower limit frequency acquisition module is used to acquire a target compressor set lower limit frequency when the operating frequency before shutdown is equal to the current compressor set lower limit frequency, wherein the target compressor set lower limit frequency = the current compressor set lower limit frequency - frequency correction value; The current lower limit frequency adjustment module is used to update the value of the current compressor lower limit frequency setting to the value of the target lower limit frequency setting if the target compressor lower limit frequency setting is greater than or equal to the preset minimum compressor lower limit frequency, and control the compressor to run after a preset time interval.

12. An air conditioner evaporator anti-odor control system, characterized in that: include: at least one processor and at least one memory; The memory stores executable instructions of the processor; The processor is configured to execute the method according to any one of claims 1-10.

13. An air conditioner, characterized in that: The method according to any one of claims 1 to 10 is used.

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