CN111637603A - Air conditioner control method and air conditioner - Google Patents

Abstract

The invention discloses an air conditioner control method and an air conditioner. The air conditioner control method includes the following steps: sampling an indoor ambient temperature T _ai according to a set sampling period; if the deviation between T _ai and the comfortable indoor temperature is less than a first After entering the temperature and humidity comfort control mode, after entering the temperature and humidity comfort control mode _, search for the target indoor temperature T _set and the target temperature within the set comfort temperature and humidity range according to Tai and indoor ambient humidity RH _i Indoor humidity RH _set , and use T _set and RH _set as the set temperature and set humidity to control the operation of the air conditioner; monitor whether _{Tai and RH i are} in the set comfort temperature and humidity range; if they are in the set comfort temperature and humidity range; If it deviates from the _set comfort temperature and humidity range, the preset target indoor temperature and preset target indoor humidity are used as the _set temperature and the set humidity control Air conditioner operates. The present invention can effectively improve the air conditioning performance.

Description

Air conditioner control method and air conditioner

technical field

The present invention relates to the technical field of air conditioning equipment, and in particular, to an air conditioner control method and an air conditioner.

Background technique

The automatic control system of the room air conditioner that directly processes the room air, its control objectives should include: meeting people's comfort requirements, that is, realizing the control of room temperature, humidity and wind speed; ensuring the safe and efficient operation of the refrigeration system: No matter under what circumstances, including different climate states, different operating modes, instant switching between modes, normal operation and misoperation, etc., the refrigeration system and the automatic control equipment themselves will not be physically damaged, and at the same time, they must keep relatively High operating efficiency to save energy; easy for users to operate and manage, the human-computer interaction mode is concise and clear, and the operation is simple.

Various air conditioning control systems are disclosed in the prior art to improve the performance of the air conditioner in these three aspects. The following technical solution is disclosed in the Chinese patent (publication number CN206771657U): "The control system includes: an infrared human-sensing device, which is used to detect at least one target parameter of the human body in the environment where the air conditioner is located, wherein the target parameter is used to determine The current PMV value of the human body and/or the current air supply state of the air conditioner; a humidity detection device, used to obtain the air relative humidity of the current environment of the air conditioner; a controller, respectively connected to the infrared human sensing device and the humidity detection device, The temperature compensation value is determined according to the environmental condition of the current operation of the air conditioner, and based on the temperature compensation value, the air conditioner is controlled to correct the indoor ambient temperature, wherein the environmental condition at least includes at least one of the following: PMV value, wind conditions and relative humidity of the air."

It is not difficult to see that, in the above technical solution, an infrared human sensing device is used to detect the current PMV value of the human body, and further control is performed. However, the accuracy of infrared human-sensing devices for detecting human PMV values is still in the experimental stage, and the actual effect deviates greatly from the user experience, which is far from meeting the actual needs.

SUMMARY OF THE INVENTION

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a control method for an air conditioner, which can comprehensively improve the comfort of the air conditioner, simplify the operation, and improve the efficiency of the air conditioner.

Another object of the present invention is to provide an air conditioner using the above air conditioner control method.

The air conditioner control method according to the embodiment of the first aspect of the present invention includes the following steps:

Sampling the indoor ambient temperature T _ai according to the set sampling period, and determining whether to enter the temperature and humidity comfort control mode according to the indoor ambient temperature T _ai ;

If the deviation between the indoor ambient temperature T _ai and the comfortable indoor temperature is less than the first predetermined temperature threshold, enter the temperature and humidity comfort control mode;

After entering the temperature and humidity comfort control mode, the target indoor temperature T _set and the target indoor humidity RH _set are searched within the set comfort temperature and humidity interval according to the indoor ambient temperature T _ai and the indoor ambient humidity RH _i obtained by sampling in the current sampling period, And use the target indoor temperature T _set and target indoor humidity RH _set as the set temperature and set humidity to control the operation of the air conditioner;

Monitoring whether the indoor ambient temperature T _ai and the indoor ambient humidity RH _i are within the set comfort temperature and humidity range;

If the indoor ambient temperature T _ai and the indoor ambient humidity RH _i are within the set comfort temperature and humidity interval, keep the target indoor temperature T _set and the target indoor humidity RH _set unchanged; if the indoor ambient temperature T _ai and the indoor ambient humidity If the RH _i deviates from the set comfort temperature and humidity range, the operation of the air conditioner is controlled using the preset target indoor temperature and the preset target indoor humidity as the set temperature and the set humidity.

According to some embodiments of the present invention, if the deviation between the indoor ambient temperature T _ai and the comfortable indoor temperature is greater than or equal to the first predetermined temperature threshold, the deviation is reduced by the strong cooling mode or the strong heating mode to make the indoor ambient temperature T The deviation between _ai and the comfort room temperature is less than the first predetermined temperature threshold.

According to some embodiments of the present invention, if it is detected that the indoor ambient temperature T _ai and the indoor ambient humidity RH _i do not belong to the set comfort temperature and humidity interval, the indoor ambient temperature T is further monitored in the first continuous valid timing period Whether both _ai and indoor environmental humidity _RHi do not belong to the set comfort temperature and humidity range; if so, it is determined that the indoor environmental temperature _Tai and indoor environmental humidity _RHi deviate from the set comfort temperature and humidity range.

According to some embodiments of the present invention, before determining whether to enter the temperature and humidity comfort control mode, first determine the current season mode according to the outdoor ambient temperature T _odi ;

Determining the current season mode involves the following steps:

Sampling the outdoor ambient temperature To _odi ;

If the outdoor ambient temperature T _odi is not lower than the seasonal mode temperature threshold, it is determined that the current seasonal mode is summer;

If the outdoor ambient temperature _Todi is lower than the seasonal mode temperature threshold, it is determined that the current seasonal mode is winter.

According to some embodiments of the present invention, after entering the winter season mode, if the outdoor ambient temperature T _odi is greater than or equal to the summer mode temperature threshold and satisfies the first accumulated timing period, the current season mode turns to summer;

After entering the summer season mode, if the outdoor ambient temperature T _odi is less than or equal to the winter mode temperature threshold and the accumulation satisfies the first accumulation timing period, the current season mode turns to winter.

According to some embodiments of the present invention, if it is determined that the current seasonal mode is summer, then:

Determine whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the first temperature interval; if it belongs to the first temperature interval, firstly use the preset target indoor temperature and the preset target indoor humidity as the set temperature and setting The humidity control air conditioner operates; then controls the air conditioner to enter the temperature and humidity comfort control mode; or

Determine whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the second temperature interval; if it belongs to the second temperature interval, control the air conditioner to enter the temperature and humidity comfort control mode; or

Determine whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the third temperature interval; if it belongs to the third temperature interval, control the fan to work at the set speed and sample the indoor ambient humidity, if the indoor ambient humidity is higher than the humidity intervention upper limit If the indoor ambient humidity is lower than the lower threshold of humidity intervention, it will enter the air supply mode;

The temperature value in the first temperature interval, the temperature value in the second temperature interval, and the temperature value in the third temperature interval decrease sequentially.

According to some embodiments of the present invention, if the difference between the indoor ambient temperature T _ai and the preset target indoor temperature is greater than 3 degrees Celsius, the target operating frequency of the compressor is obtained through incremental PID operation;

If the difference between the indoor ambient temperature T _ai and the preset target indoor temperature is less than 3 degrees Celsius, the target operating frequency of the compressor is obtained through a fuzzy algorithm.

According to some embodiments of the present invention, in the summer mode, the target indoor temperature T _set is the highest temperature value corresponding to the indoor environmental humidity RH _i sampled in the set comfort temperature and humidity interval corresponding to the current sampling period; the target indoor humidity RH _set It is the lowest humidity value corresponding to the indoor ambient temperature T _ai obtained by sampling in the current sampling period in the comfort temperature and humidity interval.

According to some embodiments of the present invention, the dehumidification mode includes:

During the second valid timing period, the air conditioner maintains the cooling operation;

After the second valid timing period ends, the difference between the indoor ambient temperature T _ai sampled in the current sampling period and the dehumidification set temperature is used as the set temperature, the air conditioner maintains the cooling operation, and the fan keeps the wind speed unchanged.

According to some embodiments of the present invention, after entering the temperature and humidity comfort control mode, if the indoor ambient temperature T _ai sampled in the current sampling period belongs to the corresponding temperature range of the set comfort temperature and humidity interval, it is determined that the current sampling period sampling is obtained. Whether the indoor ambient humidity _RHi is greater than the wind speed intervention threshold, if it is higher than the wind speed intervention threshold, control the fan speed to increase; if it is lower than the wind speed intervention threshold, control the fan speed to decrease.

According to some embodiments of the present invention, if it is determined that the current seasonal mode is winter, then:

Determine whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the fourth temperature interval; if it belongs to the fourth temperature interval, firstly use the preset target indoor temperature and the preset target indoor humidity as the set temperature and setting The humidity control air conditioner operates; then controls the air conditioner to enter the temperature and humidity comfort control mode; or

Determine whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the fifth temperature interval; if it belongs to the fifth temperature interval, control the air conditioner to enter the temperature and humidity comfort control mode; or

Determine whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the sixth temperature range;

If it belongs to the sixth temperature range, enter the air supply mode;

Wherein, the temperature value of the fourth temperature interval, the temperature value of the fifth temperature interval, and the temperature value of the sixth temperature interval increase sequentially.

According to some embodiments of the present invention, in the winter mode, the target indoor temperature T _set is the lowest temperature value corresponding to the indoor environmental humidity RH _i sampled in the set comfort temperature and humidity interval corresponding to the current sampling period; the target indoor humidity RH _set It is the highest humidity value corresponding to the indoor ambient temperature T _ai sampled by the current sampling period in the comfort temperature and humidity interval.

The air conditioner according to the embodiment of the second aspect of the present invention adopts the air conditioner control method according to the embodiment of the first aspect of the present invention.

The air conditioner control method disclosed in the present invention optimizes the control logic of the air conditioner according to the indoor ambient temperature and the actual comfort of the user, so as to make the control process more accurate. At the same time, the operation process is simplified, the energy consumption is more reasonable, and the overall performance of the air conditioner is comprehensively improved.

The air conditioner disclosed in the present invention has the advantages of excellent performance and high degree of intelligence.

Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

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

FIG. 1 is a flowchart of the first embodiment of the air conditioner control method disclosed in the present invention;

FIG. 2 is a flowchart of the second embodiment of the air conditioner control method disclosed in the present invention;

Figure 3 shows the comfort temperature and humidity range in summer mode;

Figure 4 shows the comfort temperature and humidity range in winter mode.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIG. 1, a flowchart of an embodiment of the air conditioner control method disclosed in the present invention is shown. The air conditioner control method disclosed in the present invention can be used as a subroutine of the whole air conditioner control, which is activated by the user by operating specific keys on the air conditioner control panel, remote control or other remote control terminals. Or write the control program of the air conditioner to start automatically when the air conditioner is turned on. After entering the control method, as shown in Figure 1, it specifically includes the following steps:

Step 1: Sampling the indoor ambient temperature T _ai according to the set sampling period. The indoor ambient temperature T _ai is preferably detected by a temperature sensor disposed on the air return port of the indoor unit of the air conditioner. Preferably, a humidity sensor is further provided on the air return port of the indoor unit of the air conditioner to detect the indoor ambient humidity RH _i . The air conditioner determines whether to enter the temperature and humidity comfort control mode according to the indoor ambient temperature T _ai . In the embodiments disclosed in the present invention, the temperature and humidity comfort control mode is a control method with high precision, so that the air conditioning effect is more in line with human comfort. That is to say, when the deviation between the indoor ambient temperature and the comfortable indoor temperature is small, the temperature and humidity comfort control mode can provide a more precise control effect, achieve a balance of temperature and humidity, and make the air parameters in the room meet people's needs. Comfort is required, and the user does not need to perform the corresponding operation. On the other hand, when the deviation between the indoor ambient temperature and the comfortable indoor temperature is large, it is preferable to first narrow the deviation in the strong cooling mode or the strong heating mode, and increase the heating or cooling speed. The strong cooling mode/heating mode is specifically: the compressor runs at the compressor target frequency calculated by the incremental PID control algorithm based on the temperature difference between the real-time indoor ambient temperature and the set temperature, and the strong cooling mode/heating mode is currently It has been used in commercial products, and its control method is not the focus of the protection of the present invention, and will not be repeated here. The sampling period of the indoor ambient temperature T _ai and the indoor ambient humidity RH _i is preferably set to 5 minutes, that is, sampling is performed every 5 minutes.

Step 2: If the deviation between the indoor ambient temperature T _ai and the comfortable indoor temperature is relatively small, the system enters the temperature and humidity comfort control mode for precise control. Specifically, the set comfort temperature and humidity zones are stored in advance in the system. The set comfort temperature interval is a two-dimensional data interval with the humidity as the abscissa and the temperature as the ordinate, which is obtained by professional technicians through a large number of experiments according to the refrigeration principle. As shown in FIG. 3 and FIG. 4 , the area marked with Chinese “comfort” is the temperature and humidity interval in which the human body feels comfortable, that is, the set comfort temperature interval.

Step 3: After entering the temperature and humidity comfort control mode, further search for the target indoor temperature T _set and the target indoor humidity within the set comfort temperature and humidity range according to the indoor environmental temperature T _ai and indoor environmental humidity RH _i obtained by sampling in the current sampling period RH _set . The data pointer is addressed in the storage unit pre-stored to set the comfort temperature range until the target indoor temperature T _set and the target indoor humidity RH _set are found.

Step 4: After finding the target indoor temperature T _set and the target indoor humidity RH _set , use the target indoor temperature T _set and the target indoor humidity RH _set as the set temperature and set humidity to control the operation of the air conditioner.

Step 5: Monitor whether the indoor ambient temperature T _ai and the indoor ambient humidity RH _i are within the range limited by the set comfort temperature and humidity interval, so as to determine whether the current control method can effectively suppress the indoor air parameters and the ideal comfortable air parameters. deviation between.

Step 6, if the indoor ambient temperature T _ai and the indoor ambient humidity RH _i are within the set comfort temperature and humidity range, it means that the current control method effectively suppresses the deviation between the indoor air parameters and the ideal comfortable air parameters, and the air conditioner The user in the room feels comfortable, keeping the target indoor temperature T _set and target indoor humidity RH _set unchanged. Correspondingly, if the indoor ambient temperature T _ai and the indoor ambient humidity RH _i deviate from the set comfort temperature and humidity range, it means that the heat source in the current air-conditioned room has changed, and the current control method is not enough to effectively suppress the deviation. Poor experience, under this condition, actively intervene and operate a set of preset target indoor temperature and preset target indoor humidity as the set temperature and set humidity control air conditioner to ensure the user's actual experience.

In order to avoid frequent fluctuations of the system, if it is detected that the indoor ambient temperature T _ai and the indoor ambient humidity RH _i do not belong to the set comfort temperature and humidity range, start the timer in the control chip, and further monitor the continuous first effective timing Whether the indoor ambient temperature T _ai and the indoor ambient humidity RH _i in the cycle do not belong to the set comfort temperature and humidity range. If yes, it is determined that the indoor ambient temperature T _ai and the indoor ambient humidity RH _i deviate from the set comfort temperature and humidity range. Preferably, the first effective timing period is 15 minutes.

2 , the flow of the cooling mode and the heating mode in the air conditioner control method disclosed in the present invention will be described in detail.

First determine the current season mode. The seasonal mode is preferably obtained by comparing the outdoor ambient temperature T _odi with the seasonal mode temperature threshold: if the outdoor ambient temperature T _odi is not lower than the seasonal mode temperature threshold, it is determined that the current seasonal mode is summer; if the outdoor ambient temperature T _odi is lower than the seasonal mode If the temperature threshold is set, it is determined that the current seasonal mode is winter. The seasonal mode temperature threshold is preferably set to 20 degrees Celsius. The outdoor ambient temperature To _odi is obtained by sampling from a temperature sensor disposed in the outdoor unit of the air conditioner, and can also be obtained by sampling through telecommunication, which is not limited herein. The sampling period of the outdoor ambient temperature _Todi is preferably set to 5 minutes, that is, sampling is performed every 5 minutes.

In order to make the operation of the air conditioner easier and realize fully intelligent automatic control, in the air conditioner control method disclosed in the present invention, after entering the summer mode, the outdoor ambient temperature T _odi obtained by sampling is continuously compared with the temperature threshold value of the winter mode , if the outdoor ambient temperature T _odi is less than or equal to the winter mode temperature threshold and the accumulation satisfies the first cumulative timing period, the current seasonal mode will be switched to winter; similarly, after entering the winter mode, the sampled outdoor ambient temperature T _odi will also continue to be compared with Compared with the summer mode temperature threshold, if the outdoor ambient temperature T _odi is greater than or equal to the summer mode temperature threshold and satisfies the first accumulated timing period, the current season mode is turned to summer. The above mode switching is performed automatically by the program without manual intervention. Preferably, the temperature threshold is set to be 15 degrees Celsius in winter mode, 25 degrees Celsius in summer mode, and the first accumulated time is 30 minutes. It should be noted that, in order to reduce the probability of misoperation and avoid frequent changes in the operating conditions of the air conditioner, before the first accumulated time of 30 minutes is reached, if the fluctuation of the outdoor ambient temperature T _odi is greater than the temperature threshold of the winter mode in the summer mode. situation, or in the winter mode, when the fluctuation of the outdoor ambient temperature To _odi is smaller than the temperature threshold in the summer mode, the first accumulated time is reset to zero, and the timing is restarted.

If the air conditioner is not equipped with an outdoor temperature sensor, or the outdoor temperature sensor is malfunctioning. In the present invention, the current seasonal mode can also be determined by the geographic location and time of the working place of the air conditioner. The air conditioner establishes a connection with the server through the WIFI module and obtains the current date. In the northern hemisphere, the period from October 1 to April 30 of the following year is winter mode, and the period from May 1 to September 30 of the current year is summer; in the southern hemisphere, October 1 of the current year The summer mode is from April 30th of the following year, and the winter mode is from May 1st to September 30th of the current year.

When it is determined that the current season mode is summer mode:

It is further determined whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the first temperature range. Preferably, when the indoor ambient temperature T _ai is greater than 28° C., it is considered to belong to the first temperature range. When the indoor ambient temperature T _ai belongs to the first temperature range, the deviation between the indoor ambient temperature and the comfortable temperature of the human body is relatively large. Therefore, the operation of the air conditioner is controlled with the preset target indoor temperature and the preset target indoor humidity as the set temperature and the set humidity. Preferably, if the difference between the indoor ambient temperature T _ai and the preset target indoor temperature is greater than 3 degrees Celsius, the target operating frequency of the compressor is obtained through incremental PID operation, and if the indoor ambient temperature T _ai and the preset target If the difference between the indoor temperatures is less than 3 degrees Celsius, the target operating frequency of the compressor is obtained through a fuzzy algorithm. Using two modes can take into account the requirements of system cooling capacity and energy consumption, so that the indoor temperature drops at an ideal rate. A set of optional values is that the preset target indoor temperature is 27° C., and the preset target indoor humidity is 30%. Then control the air conditioner to enter the temperature and humidity comfort control mode. According to the indoor ambient temperature T _ai and the indoor ambient humidity RH _i obtained by sampling in the current sampling period, the target indoor temperature T _set and the target indoor humidity RH _set are searched within the set comfort temperature and humidity interval. Specifically, the target indoor temperature T _set is Set the highest temperature value corresponding to the indoor ambient humidity RH _i sampled in the comfort temperature and humidity interval corresponding to the current sampling period, and the target indoor humidity RH _set is the indoor ambient temperature T sampled in the current sampling period in the comfort temperature and humidity interval The minimum humidity value corresponding to _ai . It is easy to understand that when the humidity is relatively high, the body temperature will increase significantly. Therefore, the target indoor temperature T _set and the target indoor humidity RH _set fully consider the factors affecting human comfort. After taking the target indoor temperature T _set and target indoor humidity RH _set as the set control parameters, the target temperature and target humidity are obtained, and it is further monitored whether the indoor environmental temperature T _ai and the indoor environmental humidity RH _i are within the set comfort. temperature and humidity range. If yes, keep the target indoor temperature T _set and target indoor humidity RH _set unchanged. If not, and it lasts for a certain period of time, preferably 15 minutes, it means that the indoor comfort has dropped significantly, and the preset target indoor temperature is used again. And the preset target indoor humidity is the control target for cooling operation.

Or, it is further determined whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the second temperature interval. Specifically, preferably, when the indoor ambient temperature T _ai is less than or equal to 28° C. and greater than or equal to 24° C., it is considered to belong to the second temperature range. When the indoor ambient temperature T _ai belongs to the second temperature range, the deviation between the indoor ambient temperature and the human body comfort temperature is small, and the temperature and humidity comfort control mode is directly entered. The temperature and humidity comfort control mode is the same as that described in the above paragraphs, and will not be repeated here. Similarly, after obtaining the target temperature and target humidity, it is further monitored whether the indoor ambient temperature _Tai and the indoor ambient humidity _RHi are within the set comfort temperature and humidity range. If yes, keep the target indoor temperature T _set and target indoor humidity RH _set unchanged, if not, and continue for a certain period of time, that is, the first effective timing period, preferably for 15 minutes, it means that the indoor comfort is significantly decreased, The cooling operation is performed again with the preset target indoor temperature and the preset target indoor humidity as the control targets.

Or, it is further determined whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the third temperature range. Specifically, preferably, when the indoor ambient temperature T _ai is less than 24° C. and lasts for at least 15 minutes, it is considered that it belongs to the third temperature range. The third temperature range is relatively low in temperature relative to the human body's comfortable environment. In this case, the user's cooling demand is likely to be reduced due to the high indoor humidity. Therefore, firstly, the fan is controlled to work at a set rotational speed, preferably 700 rpm, and the indoor ambient humidity RH _i is sampled at the same time. If the indoor ambient humidity is higher than the humidity intervention upper threshold, enter the dehumidification mode. Specifically, the dehumidification mode includes maintaining the cooling operation of the air conditioner within the second valid timing period, and preferably, the second valid timing period is set to be 3 minutes. After the second valid timing period ends, the air conditioner maintains the cooling operation by taking the difference between the indoor ambient temperature T _ai sampled in the current sampling period and the dehumidification set temperature as the set temperature. In order to quickly reduce the indoor ambient humidity to an ideal range, preferably, the dehumidification temperature is set at 2°C, and the fan keeps the wind speed unchanged at 700rpm. If the indoor ambient humidity is lower than the lower threshold of humidity intervention, it means that the humidity deviation is relatively controllable, enter the air supply mode, and keep the fan speed at 700rpm to reduce the energy consumption of the air conditioner.

It should be noted that the numerical ranges of the first temperature interval, the second temperature interval and the third temperature interval disclosed above are only preferred values, and can be adjusted in actual operation, but the temperature values of the first temperature interval, the second temperature interval The temperature value of the first temperature and the temperature value of the third temperature interval should be kept in a decreasing trend within the appropriate adjustment range.

In the temperature and humidity comfort control mode, if the indoor ambient temperature T _ai obtained by the current sampling period belongs to the set comfort temperature and humidity range, but the indoor ambient humidity RH _i is greater than the wind speed intervention threshold, the control fan speed is increased, preferably 1250rpm . If the indoor ambient humidity RH _i is less than the wind speed intervention threshold, the control fan speed is reduced, preferably 1000 rpm, so as to play an auxiliary adjustment role and save energy consumption at the same time.

Correspondingly, when it is determined that the current season mode is winter mode:

It is further determined whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the fourth temperature interval. Preferably, when the indoor ambient temperature T _ai is less than 20° C., it is considered to belong to the fourth temperature range. When the indoor ambient temperature T _ai belongs to the fourth temperature range, the deviation between the indoor ambient temperature and the comfortable temperature of the human body is relatively large, and the human body feels cold. Therefore, the operation of the air conditioner is controlled with the preset target indoor temperature and the preset target indoor humidity as the set temperature and the set humidity. Preferably, if the difference between the indoor ambient temperature T _ai and the preset target indoor temperature is greater than 3 degrees Celsius, the target operating frequency of the compressor is obtained through incremental PID operation, and if the indoor ambient temperature T _ai and the preset target If the difference between the indoor temperatures is less than 3 degrees Celsius, the target operating frequency of the compressor is obtained through a fuzzy algorithm. Using two modes can take into account the requirements of system heating and energy consumption, so that the indoor temperature rises at an ideal rate. In the winter mode, a set of selectable values are, the preset target indoor temperature is 22°C, and the preset target indoor humidity is 80%. Then control the air conditioner to enter the temperature and humidity comfort control mode. According to the indoor ambient temperature T _ai and the indoor ambient humidity RH _i obtained by sampling in the current sampling period, the target indoor temperature T _set and the target indoor humidity RH _set are searched within the set comfort temperature and humidity interval (as shown in Figure 4 ). Specifically, , the target indoor temperature T _set is the lowest temperature value corresponding to the indoor ambient humidity RH _i sampled in the set comfort temperature and humidity interval corresponding to the current sampling period; the target indoor humidity RH _set is the current sampling period in the set comfort temperature and humidity interval The highest humidity value corresponding to the indoor ambient temperature T _ai obtained by sampling. It is easy to understand that when the humidity is relatively high, the body temperature will increase significantly. Also, indoors are usually drier in winter. Therefore, the target indoor temperature T _set and the target indoor humidity RH _set fully consider the factors affecting human comfort. After taking the target indoor temperature T _set and target indoor humidity RH _set as the set control parameters, the target temperature and target humidity are obtained, and it is further monitored whether the indoor environmental temperature T _ai and the indoor environmental humidity RH _i are within the set comfort. temperature and humidity range. If yes, keep the target indoor temperature T _set and target indoor humidity RH _set unchanged. If not, and it lasts for a certain period of time, preferably 15 minutes, it means that the indoor comfort has dropped significantly, and the preset target indoor temperature is used again. And the preset target indoor humidity is the control target for heating operation. The preset target indoor temperature can be slightly adjusted relative to the initial preset target temperature, for example, it is set to 21 degrees Celsius.

Or, it is further determined whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the fifth temperature interval. Specifically, preferably, when the indoor ambient temperature T _ai is less than or equal to 24° C. and greater than or equal to 20° C., it is considered to belong to the fifth temperature range. When the indoor ambient temperature T _ai belongs to the fifth temperature range, the deviation between the indoor ambient temperature and the human body comfort temperature is small, and the temperature and humidity comfort control mode is directly entered. The temperature and humidity comfort control mode is the same as that described in the above paragraphs, and will not be repeated here. Similarly, after obtaining the target temperature and target humidity, it is further monitored whether the indoor ambient temperature _Tai and the indoor ambient humidity _RHi are within the set comfort temperature and humidity range. If yes, keep the target indoor temperature T _set and target indoor humidity RH _set unchanged. If not, and it lasts for a certain period of time, preferably 15 minutes, it means that the indoor comfort has dropped significantly, and the preset target indoor temperature is used again. And the preset target indoor humidity is the control target for heating operation.

Alternatively, it is further determined whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the sixth temperature range. Specifically, preferably, when the indoor ambient temperature T _ai is greater than 24° C. and lasts for at least 15 minutes, it is considered to belong to the sixth temperature range. The temperature in the sixth temperature interval is relatively high. Taking into account the user's comfort, directly enter the air supply mode and control the fan speed to 700rpm.

It should be noted that the numerical ranges of the fourth temperature interval, the fifth temperature interval and the sixth temperature interval disclosed above are only preferred values, and can be adjusted in actual operation, but the temperature values of the fourth temperature interval, the fifth temperature interval The temperature value of 1 and the temperature value of the sixth temperature interval should maintain a trend of increasing sequentially.

The air conditioner control method disclosed in the present invention optimizes the control logic of the air conditioner according to the indoor ambient temperature and the current seasonal pattern in the form of data pointer lookup table, and takes the actual comfort of the user as the starting point, so that the control process is more accurate, In the whole control process, the user does not need manual intervention, which simplifies the operation process while improving the control performance, makes the energy consumption more reasonable, and comprehensively improves the overall performance of the air conditioner.

The present invention also discloses an air conditioner, which adopts the air conditioner control method disclosed in the above embodiments. The specific steps of the air conditioner control method are detailed in the above description, which will not be repeated here. The air conditioner using the above air conditioner control method can achieve the same technical effect.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (13)

1. A method for controlling an air conditioner, comprising the following steps: Sampling the indoor ambient temperature T _ai according to the set sampling period, and determining whether to enter the temperature and humidity comfort control mode according to the indoor ambient temperature T _ai ; If the deviation between the indoor ambient temperature T _ai and the comfortable indoor temperature is less than the first predetermined temperature threshold, enter the temperature and humidity comfort control mode; After entering the temperature and humidity comfort control mode, the target indoor temperature T _set and the target indoor humidity RH _set are searched within the set comfort temperature and humidity interval according to the indoor ambient temperature T _ai and the indoor ambient humidity RH _i obtained by sampling in the current sampling period, And use the target indoor temperature T _set and target indoor humidity RH _set as the set temperature and set humidity to control the operation of the air conditioner; Monitoring whether the indoor ambient temperature T _ai and the indoor ambient humidity RH _i are within the set comfort temperature and humidity range; If the indoor ambient temperature T _ai and the indoor ambient humidity RH _i are within the set comfort temperature and humidity interval, keep the target indoor temperature T _set and the target indoor humidity RH _set unchanged; if the indoor ambient temperature T _ai and the indoor ambient humidity If the RH _i deviates from the set comfort temperature and humidity range, the operation of the air conditioner is controlled using the preset target indoor temperature and the preset target indoor humidity as the set temperature and the set humidity. 2 . The air conditioner control method according to claim 1 , wherein if the deviation between the indoor ambient temperature T _ai and the comfortable indoor temperature is greater than or equal to the predetermined first temperature threshold, the air conditioner is controlled by a strong cooling mode or a strong control mode. 3 . The thermal mode narrows the deviation so that the deviation between the indoor ambient temperature T _ai and the comfortable indoor temperature is less than the first predetermined temperature threshold. 3. The air conditioner control method according to claim 1, wherein if it is detected that the indoor ambient temperature T _ai and the indoor ambient humidity RH _i do not belong to the set comfort temperature and humidity interval, then further monitoring is performed in a continuous Whether the indoor ambient temperature T _ai and the indoor ambient humidity RH _i in the first valid timing period do not belong to the set comfort temperature and humidity interval; if so, it is determined that the indoor ambient temperature T _ai and the indoor ambient humidity RH _i deviate by Set the comfort temperature and humidity range as described above. 4. The air conditioner control method according to any one of claims 1-3, wherein before determining whether to enter the temperature and humidity comfort control mode, first determine the current season mode according to the outdoor ambient temperature T _odi ; Determining the current season mode involves the following steps: Sampling the outdoor ambient temperature To _odi ; If the outdoor ambient temperature T _odi is not lower than the seasonal mode temperature threshold, it is determined that the current seasonal mode is summer; If the outdoor ambient temperature _Todi is lower than the seasonal mode temperature threshold, it is determined that the current seasonal mode is winter. 5. The air conditioner control method according to claim 4, characterized in that, after entering the winter season mode, if the outdoor ambient temperature T _odi is greater than or equal to the summer mode temperature threshold and satisfies the first cumulative timing period, the current season mode is switched to. for summer; After entering the summer season mode, if the outdoor ambient temperature T _odi is less than or equal to the winter mode temperature threshold and the accumulation satisfies the first accumulation timing period, the current season mode turns to winter. 6. The air conditioner control method according to claim 4, wherein if it is determined that the current seasonal mode is summer, then: Determine whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the first temperature interval; if it belongs to the first temperature interval, firstly use the preset target indoor temperature and the preset target indoor humidity as the set temperature and setting The humidity control air conditioner operates; then controls the air conditioner to enter the temperature and humidity comfort control mode; or Determine whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the second temperature interval; if it belongs to the second temperature interval, control the air conditioner to enter the temperature and humidity comfort control mode; or Determine whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the third temperature interval; if it belongs to the third temperature interval, control the fan to work at the set speed and sample the indoor ambient humidity, if the indoor ambient humidity is higher than the humidity intervention upper limit If the indoor ambient humidity is lower than the lower threshold of humidity intervention, it will enter the air supply mode; The temperature value in the first temperature interval, the temperature value in the second temperature interval, and the temperature value in the third temperature interval decrease sequentially. 7. The air conditioner control method according to claim 6, characterized in that, if the difference between the indoor ambient temperature T _ai and the preset target indoor temperature is greater than 3 degrees Celsius, the compressor's target operating frequency; If the difference between the indoor ambient temperature T _ai and the preset target indoor temperature is less than 3 degrees Celsius, the target operating frequency of the compressor is obtained through a fuzzy algorithm. 8. The air conditioner control method according to claim 6, wherein in the summer mode, the target indoor temperature _Tset corresponds to the indoor environmental humidity RH _i obtained by sampling in the corresponding current sampling period in the set comfort temperature and humidity interval. The target indoor humidity RH _set is the lowest humidity value corresponding to the indoor ambient temperature T _ai sampled by the current sampling period in the set comfort temperature and humidity interval. 9. The air conditioner control method according to claim 6, wherein the dehumidification mode comprises: During the second valid timing period, the air conditioner maintains the cooling operation; After the second valid timing period ends, the difference between the indoor ambient temperature T _ai sampled in the current sampling period and the dehumidification set temperature is used as the set temperature, the air conditioner maintains the cooling operation, and the fan keeps the wind speed unchanged. 10 . The air conditioner control method according to claim 6 , wherein after entering the temperature and humidity comfort control mode, if the indoor ambient temperature T _ai obtained by sampling in the current sampling period belongs to the corresponding temperature and humidity interval of the set comfort. 11 . temperature range, then determine whether the indoor ambient humidity RH _i sampled in the current sampling period is greater than the wind speed intervention threshold, if it is higher than the wind speed intervention threshold, control the fan speed to increase; if it is lower than the wind speed intervention threshold, control the fan speed to decrease . 11. The air conditioner control method according to claim 4, wherein if it is determined that the current seasonal mode is winter, then: Determine whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the fourth temperature interval; if it belongs to the fourth temperature interval, firstly use the preset target indoor temperature and the preset target indoor humidity as the set temperature and setting The humidity control air conditioner operates; then controls the air conditioner to enter the temperature and humidity comfort control mode; or Determine whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the fifth temperature interval; if it belongs to the fifth temperature interval, control the air conditioner to enter the temperature and humidity comfort control mode; or Determine whether the indoor ambient temperature T _ai sampled according to the set sampling period belongs to the sixth temperature range; If it belongs to the sixth temperature range, enter the air supply mode; Wherein, the temperature value of the fourth temperature interval, the temperature value of the fifth temperature interval, and the temperature value of the sixth temperature interval increase sequentially. 12 . The air conditioner control method according to claim 11 , wherein, in the winter mode, the target indoor temperature _Tset corresponds to the indoor ambient humidity RH _i sampled in the set comfort temperature and humidity interval corresponding to the current sampling period. 13 . The target indoor humidity RH _set is the highest humidity value corresponding to the indoor ambient temperature T _ai sampled by the current sampling period in the set comfort temperature and humidity interval. 13. An air conditioner, characterized in that the air conditioner control method according to any one of claims 1-12 is adopted.

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