Air conditioner evaporator anti-odor control method, device, system and air conditioner

Abstract

The application discloses an air conditioner evaporator peculiar smell control method, device, system and air conditioner, and belongs to the peculiar smell control field of the air conditioner. When the air conditioner is running, if it is detected that the compressor is stopped, the frequency before the compressor is stopped is acquired, and then it is judged whether the reason for the stop of the compressor is that the frequency before the stop reaches the current compressor set lower limit frequency; if yes, 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 lowest 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 an interval of a preset time length, so that the compressor can be controlled not to stop, the temperature of the evaporator is ensured to be low, peculiar smell volatilization is not caused, users cannot feel peculiar smell, and the experience of the users is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the air conditioner anti-odor technology field, in particular, relates to an air conditioner evaporator anti-odor control method, device, system and air conditioner. BACKGROUND

[0002] With the improvement of people's living standards, people's attention to air conditioning is not only in its ability and energy efficiency, but also gradually increasing demand for comfort.

[0003] Because of the high humidity in summer air, when the wet air containing a large amount of water meets the low-temperature evaporator, condensate will be formed on the surface of the evaporator, and the condensate will be formed around the drain port, combined with the dust and dirt inhaled from the air, and the humid environment will produce a large amount of mold, thereby producing odor. The existing variable frequency air conditioner runs, the compressor often stops, and then restarts after a period of time.

[0004] During the process of compressor operation stop to restart, the indoor fan remains open, and the odor on the surface of the evaporator will be taken out, which brings poor feeling to the user and greatly affects the user's experience. SUMMARY

[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 that in the prior art, during the process of compressor operation stop to restart, the indoor fan remains open, and the odor on the surface of the evaporator will be taken out, which brings poor feeling to the user and greatly affects the user's experience.

[0006] The technical scheme adopted by the present application to solve its technical problems is:

[0007] In a first aspect, an air conditioner evaporator anti-odor control method is provided, comprising:

[0008] When the air conditioner is running, if the compressor is detected to stop, the frequency before the compressor stops is obtained, and the frequency before the compressor stops is the frequency of the compressor when responding to the stop instruction;

[0009] When the pre-stop running frequency is equal to the current compressor set lower limit frequency, the target compressor set lower limit frequency is obtained, and the target compressor set lower limit frequency = current compressor set lower limit frequency-frequency correction value;

[0010] 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 time interval.

[0011] Furthermore, it also includes:

[0012] The evaporator inner tube temperature after the compressor stops and the target number of compressor stops are obtained. The target number of stops is the number of times the compressor stops when the duration of a single stop is less than a threshold.

[0013] The frequency correction value is determined based on the evaporator inner tube temperature and the target number of shutdowns.

[0014] Further, determining the frequency correction value based on the evaporator inner tube temperature and the target number of shutdowns includes:

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

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

[0017] Further, determining the frequency correction value based on the evaporator inner tube temperature and the target number of shutdowns includes:

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

[0019] The frequency correction value is equal to the nth power of the second frequency correction coefficient, where n is the target number of downtimes.

[0020] Furthermore, it also includes:

[0021] If the target compressor's set lower limit frequency is lower than the lowest compressor's lower limit frequency, then the current compressor's set lower limit frequency value remains unchanged, and the compressor is controlled to run after the preset time interval.

[0022] Furthermore, it also includes:

[0023] When the compressor stops, determine the target speed of the indoor fan;

[0024] If the target speed is greater than or equal to the 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 rotational speed of the indoor fan includes:

[0026] When the compressor stops, the actual speed of the indoor fan is obtained, and a timer is started to obtain the shutdown duration of the compressor. The actual speed is the speed of the indoor fan when the compressor stops.

[0027] The speed correction value is determined based on the downtime; the longer the downtime, the lower the speed correction value.

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

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

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

[0031] Speed ​​correction value = Stop time * First motor speed correction coefficient.

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

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

[0034] The speed correction value is equal to the second motor speed correction coefficient raised to the power of t, where t is the downtime.

[0035] Furthermore, it also includes:

[0036] When the temperature of the evaporator inner tube is less than or equal to the threshold, the air speed of the indoor fan is controlled to be the actual air speed, which is the air speed of the indoor fan when the compressor stops.

[0037] Secondly, an air conditioner evaporator odor control device is provided, comprising:

[0038] The pre-stop frequency acquisition module is used to acquire the pre-stop frequency of the compressor when the air conditioner is running and the compressor is detected to be shut down. The pre-stop frequency is the frequency at which the compressor responds to the shutdown command.

[0039] The target lower limit frequency acquisition module is used to acquire the target compressor set lower limit frequency when the operating frequency before shutdown is equal to the current compressor set lower limit frequency. 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 set lower limit frequency to the value of the target 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, and control the compressor to run after a preset time interval.

[0041] Thirdly, an air conditioner evaporator odor prevention control system is provided, including:

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

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

[0044] The processor is configured to perform the above-described air conditioner evaporator odor control method.

[0045] Fourthly, an air conditioner is provided that uses the aforementioned air conditioner evaporator odor control method.

[0046] Beneficial effects:

[0047] This application provides a method, device, system, and air conditioner for controlling odor prevention in an air conditioner evaporator. When the air conditioner is running, if a compressor stoppage is detected, the compressor's pre-stop frequency is obtained. The cause of the compressor stoppage is then determined: is it because the pre-stop frequency reached the current compressor's set lower limit frequency? If so, the target compressor's set lower limit frequency is calculated. If the target compressor's set lower limit frequency is greater than or equal to a preset minimum compressor lower limit frequency, the current compressor's set lower limit frequency is updated to the target set lower limit frequency. The compressor is then controlled to run after a preset interval. This ensures the compressor runs continuously, maintaining a low evaporator temperature and preventing odor evaporation, thus eliminating the odor and significantly improving the user experience. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a flowchart of an air conditioner evaporator odor control method provided in an embodiment of this application;

[0050] Figure 2 This is a flowchart of a specific air conditioner evaporator odor control method provided in an embodiment of this application;

[0051] Figure 3 This is a schematic diagram of the structure of an air conditioner evaporator odor control device provided in an embodiment of this application;

[0052] Figure 4 This is a schematic diagram of an air conditioner evaporator odor prevention control system provided in an embodiment of this application. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0054] Existing technologies include the following methods to prevent odors: determining the water film coverage by measuring the internal pipe temperature Tn, and ensuring the water film completely covers the evaporator fin surface to prevent unpleasant odors from being blown out of the air conditioner unit. However, the presence of the water film can increase mold growth on the evaporator surface, exacerbating odor production.

[0055] This patent application addresses this problem by proposing to correct the compressor's set lower limit frequency and the fan speed corresponding to the user's set speed after the compressor stops by detecting the compressor's operating frequency and shutdown duration when it stops, combined with the evaporator's inner pipe temperature and the number of times the compressor stops, in order to prevent the air conditioner evaporator from emitting odors.

[0056] Reference Figure 1 This application provides a method for controlling odor prevention in an air conditioner evaporator, including:

[0057] S11: When the air conditioner is running, if the compressor is detected to stop, the compressor's pre-stop frequency is obtained, which is the frequency at which the compressor responds to the stop command.

[0058] It should be noted that the solution proposed in this application is applied when the air conditioner is running normally and not turned off. First, it monitors whether the compressor has stopped. If it has stopped, it obtains the frequency before the compressor stopped.

[0059] S12: When the operating frequency before shutdown is equal to the current compressor's set lower limit frequency, obtain the target compressor's set lower limit frequency. The target compressor's set lower limit frequency = the current compressor's set lower limit frequency - 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, specifically as follows: the evaporator inner tube temperature after the compressor stops and the target number of compressor stops are obtained, wherein the target number of stops is the number of times the compressor stops for a single time with a duration less than a threshold; the frequency correction value is determined based on the evaporator inner tube temperature and the target number of stops.

[0062] In some embodiments, determining the frequency correction value based on the evaporator inner tube temperature and the target number of shutdowns includes:

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

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

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

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

[0067] The frequency correction value is equal to the nth power of the second frequency correction coefficient, where n is the target number of downtimes.

[0068] In other embodiments, determining the frequency correction value based on the evaporator inner tube temperature and the target number of shutdowns includes:

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

[0070] The frequency correction value is equal to the nth power of the second frequency correction coefficient, where n is the target number of downtimes.

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

[0072] S13: If the target compressor set lower limit frequency is greater than or equal to the preset minimum compressor lower limit frequency, then 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 time interval.

[0073] If the target compressor's set lower limit frequency is lower than the lowest compressor's lower limit frequency, then the current compressor's set lower limit frequency value remains unchanged, and the compressor is controlled to run after the preset time interval.

[0074] It should be noted that in some embodiments, regardless of the reason for the shutdown, as long as a shutdown is detected and the target compressor's set lower limit frequency is greater than or equal to the minimum compressor's lower limit frequency, the current compressor's set lower limit frequency will be updated to the target set lower limit frequency, and the compressor will be controlled to run after a preset interval.

[0075] As a preferred implementation in the embodiments of this application, it further includes:

[0076] When the compressor stops, the target speed of the indoor fan is determined; if the target speed is greater than or equal to the 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 rotational speed of the indoor fan can be determined based on the indoor temperature or the temperature of the evaporator inner tube. For example, the higher the temperature of the evaporator inner tube, the lower the fan speed.

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

[0079] When the compressor stops, the actual speed of the indoor fan is obtained, and the timer is started to obtain the downtime 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 downtime. The longer the downtime, the lower the speed correction value. A target speed is obtained based on the actual speed and the speed correction value. The target speed = actual speed - speed correction value.

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

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

[0082] Speed ​​correction value = Stop time * First motor speed correction coefficient.

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

[0084] The speed correction value is equal to the second motor speed correction coefficient raised to the power of t, where t is the downtime.

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

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

[0087] The speed correction value is equal to the second motor speed correction coefficient raised to the power of t, where t is the downtime.

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

[0089] In practical use, it also includes:

[0090] When the evaporator inner tube temperature is less than or equal to a threshold, the indoor fan speed is controlled to be the actual speed, which is the speed of the indoor fan when the compressor is stopped. This is because when the evaporator inner tube temperature is less than or equal to the threshold, less odor is emitted. If the indoor fan continues to run at a low speed, it will affect the airflow of the air conditioner, resulting in the indoor temperature not meeting the user's needs.

[0091] The air conditioner evaporator odor control method provided in this application embodiment detects compressor shutdown during air conditioner operation. It then acquires the compressor's pre-shutdown frequency and determines whether the shutdown is due to the pre-shutdown frequency reaching the current compressor's set lower limit frequency. If so, it calculates the target compressor's set lower limit frequency. If the target compressor's set lower limit frequency is greater than or equal to a preset minimum compressor lower limit frequency, it updates the current compressor's set lower limit frequency to the target set lower limit frequency and controls the compressor to run after a preset interval. This ensures the compressor runs continuously, maintaining a low evaporator temperature and preventing odor evaporation, thus greatly improving the user experience as the user does not perceive any odor.

[0092] To illustrate the scheme of this application in more detail, such as Figure 2 As shown, a specific implementation method is provided.

[0093] Since air conditioner shutdowns are typically caused by the compressor running at its lower frequency limit, this patent addresses this issue by designing the following control method:

[0094] During air conditioner operation, if the system detects that the compressor is in a stopped state, the system determines whether the compressor's frequency f1 before stopping is equal to the compressor's set lower limit frequency f2.

[0095] If so, the lower limit frequency of the compressor should be corrected according to the following formula:

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

[0097] The lower limit frequency f3 of the compressor after correction should not be less than the lowest allowable lower limit frequency of the compressor in the system. The frequency correction value F here is related to the evaporator inner tube temperature T.

[0098] If the evaporator inner tube temperature T is low, the frequency correction value F is small. In this case, the frequency correction value F = nd, where n is the number of times the compressor stops and d is the first frequency correction coefficient, which varies depending on the configuration of the unit. For example, the d value is smaller for small household units and larger for large commercial units.

[0099] If the evaporator inner tube temperature T is high, the frequency correction value F will be large. In this case, the frequency correction value F = q. n n represents the number of times the air conditioner actively shuts down due to reaching the lower limit frequency, and q is the second frequency correction coefficient, which varies depending on the configuration of the random group. That is, the q value is smaller for small household units and larger for large commercial units, and q > d.

[0100] When the evaporator inner tube temperature T is high, the odor from the evaporator is more easily emitted after the air conditioner is running. Therefore, the lower limit frequency of the compressor needs to be lowered to ensure that the air conditioner can continuously output cooling capacity and the compressor can run without stopping, thereby reducing the temperature of the evaporator inner tube and reducing the emission of odor from the evaporator. When the evaporator inner tube temperature T is low, the odor from the air conditioner evaporator perceived by the human body is fainter, but the lower limit frequency of the compressor still needs to be slightly lowered to ensure that the compressor runs without stopping.

[0101] In addition, the air conditioner corrects the fan speed corresponding to the user's set speed after the compressor stops by detecting the compressor's off-time t, according to the following formula.

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

[0103] After the compressor stops, the internal fan speed r1 should not be less than the minimum allowable speed of the system. The speed correction value R here is related to the compressor shutdown time t.

[0104] If the compressor downtime t is shorter, the speed correction value R is smaller. In this case, 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. The value of D varies depending on the configuration of the unit. That is, the value of D is smaller for small household units and larger for large commercial units.

[0105] If the compressor downtime t is longer, the correction value D will be larger. In this case, the correction value D = Q. t t is the compressor downtime, and Q is the motor speed correction coefficient, which varies depending on the configuration of the unit. That is, the Q value is smaller for small household units and larger for large commercial units, and Q > D.

[0106] Because the longer the air conditioner compressor is off, the higher the temperature T inside the evaporator, and the stronger the odor from the evaporator. Therefore, the speed of the indoor fan should be reduced to reduce the odor. When the air conditioner compressor is off for a shorter time, the temperature T inside the evaporator is lower, and the odor from the air conditioner evaporator is less noticeable to the human body, but there is still an odor. In this case, the speed of the indoor fan should also be reduced appropriately.

[0107] After the air conditioner compressor stops, the indoor fan speed r1 will run until the evaporator inner tube temperature T drops to a certain value (this value varies depending on the air conditioner configuration; it is higher for large commercial units and lower for small residential units. This value should ensure that the odor from the air conditioner evaporator is faintly perceptible to the human body). Then, the indoor motor will resume the speed corresponding to the current user-set fan speed. This process should not last too long, as it will affect the human body's thermal comfort experience.

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

[0109] To eliminate the problem, when the system detects an odor issue (which can be achieved by installing a microbial detector in the air duct, etc.), an indicator light can be used to prompt the user whether to activate the evaporator self-cleaning function. If the user happens to have activated the self-cleaning function at that time, the air conditioner can automatically perform evaporator self-cleaning after the user turns it off. If the user agrees to activate the evaporator self-cleaning function at that time, it can be activated via remote control. If the user does not activate the evaporator self-cleaning function at that time (this situation should be the most common), the air conditioner will operate 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 intake, the speed of the fresh air unit can be increased to increase the proportion of fresh air in the air supplied by the air conditioner, diluting odors and satisfying the user's comfort experience.

[0111] This application embodiment detects the compressor's operating frequency and shutdown duration when the compressor stops, and combines this with the evaporator's internal pipe temperature and the number of times the compressor stops to correct the compressor's lower limit frequency and the fan speed corresponding to the user's set speed after the compressor stops, in order to prevent the air conditioner evaporator from emitting odors.

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

[0113] The pre-stop frequency acquisition module 31 is used to acquire the pre-stop frequency of the compressor when the compressor is detected to be stopped during the operation of the air conditioner. The pre-stop frequency is the frequency at which the compressor responds to the stop command.

[0114] The target lower limit frequency acquisition module 32 is used to acquire the target compressor set lower limit frequency when the operating frequency before shutdown is equal to the current compressor set lower limit frequency. The target compressor set lower limit frequency = the current compressor set lower limit frequency - frequency correction value.

[0115] This also includes:

[0116] The evaporator inner tube temperature after the compressor stops and the target number of compressor stops are obtained. The target number of stops is the number of times the compressor stops when the duration of a single stop is less than a threshold.

[0117] The frequency correction value is determined based on the evaporator inner tube temperature and the target number of shutdowns.

[0118] Further, determining the frequency correction value based on the evaporator inner tube temperature and the target number of shutdowns includes:

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

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

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

[0122] The frequency correction value is equal to the nth power of the second frequency correction coefficient, where n is the target number of downtimes.

[0123] The current lower limit frequency adjustment module 33 is used to update the value of the current compressor set lower limit frequency to the value of the target 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, and control the compressor to run after a preset time interval.

[0124] If the target compressor's set lower limit frequency is lower than the lowest compressor's lower limit frequency, then the current compressor's set lower limit frequency value remains unchanged, and the compressor is controlled to run after the preset time interval.

[0125] In a preferred implementation of this application, when the compressor stops, the target speed of the indoor fan is determined;

[0126] If the target speed is greater than or equal to the 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] Determining the target speed of the indoor fan includes:

[0128] When the compressor stops, the actual speed of the indoor fan is obtained, and a timer is started to obtain the shutdown duration of the compressor. The actual speed is the speed of the indoor fan when the compressor stops.

[0129] The speed correction value is determined based on the downtime; the longer the downtime, the lower the speed correction value.

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

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

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

[0133] Speed ​​correction value = Stop time * 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 the fourth calculation formula, which is as follows:

[0135] The speed correction value is equal to the second motor speed correction coefficient raised to the power of t, where t is the downtime.

[0136] In addition, when the temperature of the evaporator inner tube is less than or equal to the threshold, the air speed of the indoor fan is controlled to be the actual air speed, which is the air speed of the indoor fan when the compressor stops.

[0137] The air conditioner evaporator odor control device provided in this application embodiment detects compressor shutdown during air conditioner operation. It then acquires the compressor's pre-shutdown frequency and determines whether the shutdown is due to the pre-shutdown frequency reaching the current compressor's set lower limit frequency. If so, it calculates the target compressor's set lower limit frequency. If the target compressor's set lower limit frequency is greater than or equal to a preset minimum compressor lower limit frequency, it updates the current compressor's set lower limit frequency to the target set lower limit frequency and controls the compressor to run after a preset interval. This ensures the compressor runs continuously, maintaining a low evaporator temperature and preventing odor evaporation, thus eliminating the odor and significantly improving the user experience.

[0138] Based on the same inventive concept, such as Figure 4 As shown, this application also provides an air conditioner evaporator odor prevention control system 40, including:

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

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

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

[0142] The air conditioner evaporator odor prevention control system provided in this application embodiment stores executable instructions of the processor in a memory. When these executable instructions are executed, the processor, during air conditioner operation, if it detects that the compressor has stopped, obtains the compressor's frequency before stopping, and then determines whether the compressor stopped because the frequency before stopping reached the current compressor's set lower limit frequency. If so, it calculates the target compressor set lower limit frequency. If the target compressor set lower limit frequency is greater than or equal to a preset minimum compressor lower limit frequency, it updates the current compressor set lower limit frequency to the target set lower limit frequency and controls the compressor to run after a preset interval. This ensures the compressor runs continuously, maintains a low evaporator temperature, prevents odor volatilization, and eliminates the odor for the user, greatly improving the user experience.

[0143] Based on the same inventive concept, this application also provides an air conditioner that applies the air conditioner evaporator anti-odor control method provided in the above embodiments.

[0144] The air conditioner provided in this application embodiment, 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 stops, obtain the compressor's frequency before stopping, and then determine whether the reason for the compressor stopping is because the frequency before stopping reached the current compressor's 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, 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. This can control the compressor to run without stopping, ensure that the evaporator temperature is low, prevent odor volatilization, and ensure that the user does not feel any odor, greatly improving the user experience.

[0145] It should be noted that in the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "a plurality of" means at least two.

[0146] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

Claims

1. A method for controlling odor prevention in an air conditioner evaporator, characterized in that, include: When the air conditioner is running, if the compressor is detected to stop, the compressor's pre-stop frequency is obtained, which is the frequency at which the compressor responds to the stop command. When the frequency before shutdown is equal to the current compressor's set lower limit frequency, the target compressor's set lower limit frequency is obtained. The target compressor's set lower limit frequency = the current compressor's set lower limit frequency - the frequency correction value. If the target compressor's set lower limit frequency is greater than or equal to the preset minimum compressor lower limit frequency, then the current compressor's set lower limit frequency value is updated to the target compressor's set lower limit frequency value, and the compressor is controlled to run after a preset time interval. Also includes: The evaporator inner tube temperature after the compressor stops and the target number of compressor stops are obtained. The target number of stops is the number of times the compressor stops when the duration of a single stop is less than a threshold. The frequency correction value is determined based on the evaporator inner tube temperature and the target number of shutdowns. A lower evaporator inner tube temperature results in a smaller frequency correction value, while a higher evaporator inner tube temperature results in a larger frequency correction value.

2. The method according to claim 1, characterized in that: Determining the frequency correction value based on the evaporator inner tube temperature and the target number of shutdowns includes: When the temperature of the evaporator inner tube is lower than the preset inner tube temperature, the frequency correction value is determined according to the first calculation formula, which is as follows: Frequency correction value = target number of downtimes * first frequency correction coefficient.

3. The method according to claim 1, characterized in that: Determining the frequency correction value based on the evaporator inner tube temperature and the target number of shutdowns includes: When the temperature of the evaporator inner tube is greater than or equal to the preset inner tube temperature, the frequency correction value is determined according to the second calculation formula, which is as follows: The frequency correction value is equal to the second frequency correction coefficient raised to the power of n, where n is the target number of downtimes.

4. The method according to claim 1, characterized in that, Also includes: If the target compressor's set lower limit frequency is lower than the lowest compressor's lower limit frequency, then the current compressor's set lower limit frequency value remains unchanged, and the compressor is controlled to run after the preset time interval.

5. The method according to claim 1, characterized in that, Also includes: When the compressor stops, determine the target speed of the indoor fan; If the target speed is greater than or equal to the 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.

6. The method according to claim 5, characterized in that: Determining the target rotational speed of the indoor fan includes: When the compressor stops, the actual speed of the indoor fan is obtained, and a timer is started to obtain the shutdown duration of the compressor. The actual speed is the speed of the indoor fan when the compressor stops. The speed correction value is determined based on the downtime. The shorter the downtime, the lower the speed correction value; the longer the downtime, the higher the speed correction value. The target speed is obtained based on the actual speed and the speed correction value, where the target speed = actual speed - speed correction value.

7. The method according to claim 6, characterized in that: The determination of the speed correction value based on the downtime includes: When the downtime is less than the preset downtime, the speed correction value is determined according to the third calculation formula, which is as follows: Speed ​​correction value = downtime * first motor speed correction coefficient.

8. The method according to claim 6, characterized in that: The determination of the speed correction value based on the downtime includes: When the downtime is greater than or equal to the preset downtime, the speed correction value is determined according to the fourth calculation formula, which is as follows: The speed correction value is equal to the second motor speed correction coefficient raised to the power of t, where t is the downtime.

9. The method according to claim 5, characterized in that, Also includes: When the temperature of the evaporator inner tube is less than or equal to the threshold, the air speed of the indoor fan is controlled to the actual rotation speed, which is the rotation speed of the indoor fan when the compressor stops.

10. An air conditioner evaporator odor control device, characterized in that, include: The pre-stop frequency acquisition module is used to acquire the pre-stop frequency of the compressor when the air conditioner is running and the compressor is detected to be shut down. The pre-stop frequency is the frequency at which the compressor responds to the shutdown command. The target lower limit frequency acquisition module is used to acquire the target compressor set lower limit frequency when the frequency before shutdown is equal to the current compressor set lower limit frequency. The target compressor set lower limit frequency = current compressor set lower limit frequency - frequency correction value. It also includes acquiring the evaporator inner tube temperature after the compressor stops and the target number of compressor shutdowns, where the target number of shutdowns is the number of times the compressor's single shutdown duration is less than a threshold. The frequency correction value is determined based on the evaporator inner tube temperature and the target number of shutdowns; a lower evaporator inner tube temperature results in a smaller frequency correction value, and a higher evaporator inner tube temperature results in a larger frequency correction value. The current lower limit frequency adjustment module is used to update the value of the current compressor set lower limit frequency to the value of 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, and control the compressor to run after a preset time interval.

11. An air conditioner evaporator odor prevention control system, characterized in that, include: At least one processor and at least one memory; The memory stores the executable instructions of the processor; The processor is configured to perform the method according to any one of claims 1-9.

12. An air conditioner, characterized in that, The method described in any one of claims 1-9.

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