WO2019144939A1

WO2019144939A1 - Thermal sensation-based air conditioner control method and air conditioner

Info

Publication number: WO2019144939A1
Application number: PCT/CN2019/073215
Authority: WO
Inventors: 马林; 刘聚科; 程永甫
Original assignee: 青岛海尔空调器有限总公司
Priority date: 2018-01-26
Filing date: 2019-01-25
Publication date: 2019-08-01
Also published as: CN108413589B; CN108413589A

Abstract

A thermal sensation-based air conditioner control method, which detects in real time a subjective thermal sensation of a heat source in a room having an air conditioner, the subjective thermal sensation being detected by the following method: sampling a body surface temperature of a heat source, an ambient temperature, and a dressing index Iclo, and calculating a body surface heat dissipation amount of the heat source; calculating a dressing compensation coefficient; determining whether the body surface heat dissipation amount is greater than a set heat dissipation amount: if the body surface heat dissipation amount is greater than the set heat dissipation amount, substituting the body surface heat dissipation amount X and the dressing compensation coefficient Tr into the following formula to calculate a subjective thermal sensation Y, Y = -k1X + Q1 + Tr; if the body surface heat dissipation amount is less than and equal to the set heat dissipation amount, substituting the body surface heat dissipation amount X and the dressing compensation coefficient Tr into the following formula to calculate a subjective thermal sensation Y, Y = -k2X + Q2 + Tr, k1 < k2, Q1 < Q2; and determining a subjective thermal sensation level according to the value of the subjective thermal sensation Y. Further disclosed is an air conditioner. The present invention has the advantage of high degree of intelligence.

Description

Air conditioner control method and air conditioner based on warm and cold feeling

Technical field

The present invention relates to the field of air conditioning equipment, and in particular, to an air conditioner control method and an air conditioner based on a warm and cold feeling.

Background technique

The air conditioner is used for cooling or dehumidification in the summer and heating in the winter. It can adjust the indoor temperature, so that the air-conditioned room can reach the comfortable environment of warm winter and cool summer. While the air conditioner guarantees the comfort of the air-conditioned room, the air conditioner manufacturer has been working on the development of new technical solutions, which reduces the energy consumption of the air conditioner and improves the efficiency of the air conditioner.

As disclosed in the Chinese patent application "Method and Apparatus for Realizing Air Conditioning and Refrigeration Control Based on Distance", the application number 201611087736.2 discloses a technical solution: "air conditioner operation, obtaining real-time indoor ambient temperature and setting target temperature Calculating the temperature difference between the real-time indoor ambient temperature and the set target temperature as a real-time temperature difference, performing PID calculation according to the real-time temperature difference to obtain the first frequency; detecting the heat source in the room where the air conditioner is located in real time and determining the real-time distance between the heat source and the air conditioner, according to Corresponding relationship between the known distance and the wind speed determines the wind speed corresponding to the real-time distance and as the real-time wind speed, and obtains the frequency corresponding to the real-time wind speed according to the known relationship between the wind speed and the frequency, as the second frequency; The comfort temperature is compared; if the real-time indoor ambient temperature is not less than the set comfort temperature, the smaller of the first frequency and the second frequency is selected to control the compressor operation of the air conditioner. If the real-time indoor ambient temperature is less than the set comfort temperature, Obtain the real-time coil temperature and coil head of the air conditioner evaporator Temperature, calculate the temperature difference between the real-time coil temperature and the target temperature of the coil, as the real-time coil temperature difference, perform the disk temperature PID calculation according to the real-time coil temperature difference, obtain the third frequency, select the first frequency, the second frequency, and the third The smaller of the frequencies controls compressor operation; wherein the coil target temperature is determined based on the indoor target temperature and the indoor target temperature is less than the coil target temperature."

It is not difficult to see that in the above control method, the real-time wind speed is determined according to the distance between the heat source and the air conditioner, and the frequency is determined according to the real-time temperature difference, the correspondence between the wind speed and the frequency, and one of the indoor ambient temperature and the set comfort temperature. of. Neither the real-time wind speed nor the frequency adjustment takes into account the subjective comfort of the user, and the control accuracy is relatively low.

Summary of the invention

The invention provides an air conditioner control method based on warm and cold feeling, and adjusts air parameters of an air-conditioned room according to the relationship between the subjective comfort of the accurately detected person, the distance between the person and the air conditioner, the ambient temperature and the outlet air temperature. Form an air-conditioned room environment that is comfortable for people.

An air conditioner control method based on a warm and cold feeling, the air conditioner operates in a cooling mode, and the control method comprises the following steps:

The subjective warm feeling of the heat source in the air-conditioned room is detected in real time, and the subjective warm feeling is detected by the following method:

Sampling the body surface temperature T of the heat source in the air-conditioned room, the ambient temperature T ₀ of the air-conditioned room, and the dressing index I _clo of the heat source in the air-conditioned room,

The body surface temperature T, the ambient temperature T _{0 of the} air conditioner, and the wear index I _clo of the heat source in the air-conditioned room are brought into the following formula to calculate the heat dissipation amount X of the heat source body; X=(h+(1+0.18h*I _clo ) (TT ₀ ), where h=h _r +h _c , h _r is the radiant thermal conductivity, and h _c is the convective thermal conductivity;

The body surface temperature T, the ambient temperature T _{0 of the} air conditioner and the dressing index I _clo of the heat source in the air-conditioned room are brought into the following formula to calculate the dressing compensation coefficient T _r ,T _r =(I _clo /(TT ₀ ))-T ₀ /T;

Determine whether the heat dissipation of the body surface is greater than the set heat dissipation amount:

If it is larger than the set heat dissipation amount, the body surface heat dissipation amount X and the dressing compensation coefficient Tr are brought into the following formula to calculate the subjective temperature cooling feeling Y:

Y=-k ₁ X+Q ₁ +T _r ;

If it is less than or equal to the set heat dissipation amount, the body surface heat dissipation amount X and the dressing compensation coefficient Tr are brought into the following formula to calculate the subjective temperature cooling feeling Y:

Y=-k ₂ X+Q ₂ +T _r ; where k ₁ <k _2, Q ₁ <Q ₂

The subjective temperature and cooling level is determined based on the value of the subjective temperature and cooling feeling Y.

When the heat dissipation amount of the body surface is higher or lower than the set heat dissipation amount, the detection values of the subjective temperature and cold sense are corrected by using two different correction formulas, which can accurately detect, in particular, the body surface heat dissipation is large. At the same time, the actual subjective temperature and cold feeling of the human body under high ambient temperature and high body surface temperature reduces the probability of misjudgment and provides an accurate data basis for subsequent control.

At the same time, an air conditioner is disclosed, which adopts an air conditioner control method based on a warm and cold feeling. The air conditioner operates in a cooling mode, and the control method includes the following steps:

Y=-k ₁ X+Q ₁ +T _r ;

Y=-k ₂ X+Q ₂ +T _r ; where k ₁ <k _2, Q ₁ <Q ₂

The air conditioner disclosed by the invention has the advantages of high comfort and good intelligence.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a flow chart of a specific embodiment of a method for controlling a temperature and humidity based air conditioner according to the present invention;

2 is a flow chart of a first embodiment of a subjective temperature-sensing control air conditioner operation calculated by the method disclosed in FIG. 1;

3 is a flow chart showing a second embodiment of the operation of the subjective temperature and cooling sense control air conditioner calculated by the method disclosed in FIG. 1;

4 is a flow chart showing a third embodiment of the subjective temperature-sensing control air conditioner operation calculated by the method disclosed in FIG. 1;

Figure 5 is a flow chart showing a fourth embodiment of the operation of the subjective temperature-cooling control air conditioner calculated by the method disclosed in Figure 1;

Figure 6 is a schematic block diagram of a specific embodiment of the disclosed air conditioner.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described below. Of course, they are merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in different examples. This repetition is for the purpose of simplicity and clarity, and is not in the nature of the description of the various embodiments and/or arrangements discussed. Additionally, the structure of the first feature described below "on" the second feature may include embodiments in which the first and second features are formed in direct contact, and may include additional features formed between the first and second features. Embodiments such that the first and second features may not be in direct contact.

In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "mounted" and "connected" are to be understood broadly, and may be, for example, a mechanical connection or an electrical connection, or a communication within two elements. They may be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms may be understood on a case-by-case basis.

The method for controlling the air conditioner based on the temperature and cooling feeling disclosed in the present invention will be specifically described below with reference to the accompanying drawings. The control method disclosed in this embodiment operates against the summer operation of the air conditioner, and the air conditioner operates in the cooling mode. After the air conditioner is turned on, it is preferable to execute a control algorithm as disclosed in the background art.

An infrared sensor that can collect the absolute temperature and thermal image of the heat source is provided on the air conditioner. The subjective temperature and cooling feeling of the heat source in the air-conditioned room is determined by the detected value of the infrared sensor, specifically, the following steps are included:

Step S102, sampling the body surface temperature T of the heat source in the air-conditioned room, the ambient temperature T ₀ of the air-conditioned room, and the dressing index I _clo of the heat source in the air-conditioned room.

The heat source in the air-conditioned room is the person in the air-conditioned room. After detecting the heat source for at least two minutes, the infrared sensor starts sampling the body surface temperature T of the heat source to overcome the error caused by the outdoor environment to the body surface temperature T. A return air temperature sensor is disposed on the air return port of the air conditioner, and the ambient temperature of the air-conditioned room is sampled by the return air temperature sensor. The dressing index I _clo of the heat source in the air conditioner room can be obtained by analyzing the thermal image generated by the infrared sensor. However, a more preferred method of sampling the wear index I _clo is that the air conditioner establishes communication with the server, and the server retrieves real-time recommended dressing information from the weather bureau database. A one-to-one correspondence between the dressing information and the dressing index I _clo is pre-stored in the air conditioner, and the dressing index I _clo is a dimensionless constant.

The following is a list relationship between the optional dressing information and the dressing index I _clo .

穿衣信息Dressing information	穿衣指数I _clo Dressing index I _clo
短袖衬衫、裤子、短裤、鞋Short-sleeved shirts, pants, shorts, shoes	0.50.5
长袜、短袖衬衫、裙Stockings, short-sleeved shirts, skirts	0.550.55
衬衫、长裤、袜Shirts, trousers, socks	0.60.6
衬衫、连衣裙、袜、鞋Shirts, dresses, socks, shoes	0.70.7

Step S103, taking the body surface temperature, the ambient temperature T _{0 of the} air conditioner, and the dressing index I _clo of the heat source in the air-conditioned room into the following formula, and calculating the heat dissipation amount X of the body surface; X=(h/(1+0.18h*I _clo) )) (TT ₀ ), where h = h _r + h _c , h _r is the radiant heat conductivity, h _c is the convective thermal conductivity, and h is preferably 8.35 W/m 2 .

Step S104, taking the body surface temperature T, the ambient temperature T _{0 of the} air conditioner, and the dressing index I _clo of the heat source in the air-conditioned room into the following formula, and calculating the dressing compensation coefficient T _r , T _r = (I _clo /(TT ₀ ) ) -T ₀ /T.

In step S105, it is determined whether the amount of heat dissipation of the body surface is greater than the set heat dissipation amount. The greater the amount of heat dissipated by the human body, the more people feel cold, and the smaller the amount of heat dissipated, the more people feel hot. In the summer, when the heat dissipation of the human body is large, even if the temperature in the room is high and the body surface temperature is high, the human body may have a subjective warmth and cold feeling due to indoor humidity and the health of the human body. Therefore, when the heat dissipation of the human body is high, it is necessary to treat this situation with caution, and therefore it is desirable to obtain a more accurate detection value of the subjective warmth and coldness of the human body as a reference for the next control. Through a large number of experimental and theoretical guidance, a critical threshold that is most prone to the above situation is obtained, and this critical threshold is used as the set heat dissipation amount.

In step S1061, if the heat dissipation amount of the body surface is greater than the set heat dissipation amount, the body surface heat dissipation amount X and the dressing compensation coefficient Tr are brought into the following formula to calculate the subjective temperature cooling feeling Y:

Y=-k ₁ X+Q ₁ +T _r ;

In step S1062, if the set heat dissipation amount is less than or equal to, the body surface heat dissipation amount X and the wear compensation coefficient Tr are brought into the following formula to calculate the subjective temperature cooling feeling Y:

Y=-k ₂ X+Q ₂ +T _r .

Wherein k ₁ < k _2, Q ₁ < Q _2, preferably, the heat dissipation amount is set to 30 W/m 2 , k ₁ = 0.09, k _2, = 0.2; Q ₁ = 1.5, and Q ₂ = 7.5. That is, when the heat dissipation of the body surface is greater than 30 W/m2, Y=-0.09X+1.5+T _r , when the heat dissipation of the body surface is less than 30 W/m 2 , Y=-0.2X+7.5+T _r .

When the heat dissipation of the body surface is higher or lower than the set heat dissipation amount, the detection values of the subjective temperature and cold sense are corrected by using two different correction formulas, which can be accurately detected, especially the body surface heat dissipation is large, and at the same time The actual subjective warmth and coldness of the human body under high ambient temperature and high body surface temperature reduces the probability of misjudgment and provides an accurate data basis for subsequent control.

Preferably, when the subjective temperature and cold feeling Y∈(-4, -2.5), the subjective temperature and cold feeling level is very cold, and the subjective temperature and cooling feeling Y∈ (-2.5, -1.5), the subjective temperature and cold feeling level is cold. Subjective temperature and cold feeling Y∈ (-1.5, 1.5), subjective temperature and cold feeling level is comfortable; subjective warm and cold feeling Y∈ (1.5, 2.5), subjective temperature and cold feeling level is hot; subjective temperature and cold feeling Y∈ At (2.5, 4), the subjective warmth level is very hot.

2 is a flow chart of a particular preferred embodiment of a subjective temperature-sensing control air conditioner operation calculated using the method disclosed in FIG.

In step S201, the level of subjective warmth and coldness is determined.

In step 202, if the level of subjective warmth and coldness is not lower than the thermal level, the person feels very hot and performs the following control strategy.

In step S203, the distance between the heat source and the air conditioner is detected in real time. Distance detection is also obtained by an infrared sensor in combination with existing algorithms.

In order to allow the user to achieve the comfort of the body temperature at the same time and at the same time, the temperature control function, in the control method disclosed in the embodiment, further includes the following steps:

Step S204, determining the wind speed corresponding to the distance according to the correspondence between the distance and the wind speed as the real-time wind speed. In order to avoid the stimulation caused by a large amount of wind from the low temperature during the cooling operation, the subjective temperature and cooling level of the user jumps from the “hot” level to the “cold” and below level. . In a refrigerating environment, once self-heating to cold overshoot occurs, it is difficult to automatically adjust to return to comfort.

According to the common activity area of the person in the air-conditioned room, in the present embodiment, it is preferable to set three distance setting sections in accordance with the area of the air-conditioned room.

Specifically, if the heat source, that is, the distance between the user and the air conditioner belongs to the first distance setting interval, determining the first set wind speed according to the relationship between the distance and the wind speed, and determining that the first set wind speed is the real-time wind speed, and controlling The air conditioner indoor unit fan runs. If the heat source, that is, the distance between the user and the air conditioner belongs to the second distance setting interval, determining the second set wind speed according to the relationship between the distance and the wind speed, and determining that the second set wind speed is the real-time wind speed, controlling the indoor unit of the air conditioner The fan is running. If the heat source, that is, the distance between the user and the air conditioner belongs to the third distance setting interval, the third set wind speed is determined according to the relationship between the distance and the wind speed, and the third set wind speed is determined as the real-time wind speed, and the indoor unit of the air conditioner is controlled. The fan is running. Considering the relationship between the outlet air temperature and the body surface temperature, the upper limit thresholds of the first distance interval, the second distance interval, and the third distance interval are sequentially increased, the first set wind speed, the second set wind speed, and the third setting. The wind speed increases in turn. The area of the common air-conditioned room is less than or equal to 30 square meters. Therefore, preferably, the first distance setting interval is set to (0, 1 m), and the second distance setting interval is (1, 2 m), the third The distance setting interval is (2,3m), the first set wind speed corresponds to the low wind gear position or the breeze gear position, the second set wind speed corresponds to the stroke position, and the third set wind speed corresponds to the high wind gear position, avoiding a large number of The cold wind is blown to the close-up user's body surface.

Step S205, further considering the influence of the outlet air temperature on the ambient temperature and the body surface temperature, taking into account the demand of the cooling effect, real-time detecting the return air temperature of the air return air inlet of the air conditioner and the air outlet temperature of the air outlet, and calculating the return air temperature and the outflow temperature The temperature difference between the wind temperatures is taken as the real-time air supply temperature difference.

In step S206, it is determined whether the real-time air supply temperature difference is greater than or equal to the temperature difference set value. The set value of the temperature difference is a temperature point obtained by the research and development personnel under the guidance of a large number of air-conditioning operation simulation experiments, and the ideal frequency corresponding to the temperature point is calculated. The return air temperature of the air return of the air conditioner can be equal to the indoor ambient temperature. When the real-time supply air temperature difference is greater than or equal to the temperature difference set value, the indoor ambient temperature is high or the supply air temperature is low.

As shown in steps S207 to S211, after the air conditioner operates at the ideal frequency as the operating frequency, the sampling period is set. At the beginning of the sampling cycle, the compressor operates at the desired frequency. The wind speed correction value or / frequency correction value is generated according to the trend of the indoor temperature. At the end of the sampling period, it is determined whether the subjective temperature and cooling level is a "comfort" level.

As shown in step S212 and step S214, if the determination result is still "hot" or "very hot", the sampling period starts again, and the compressor 21 combines the real-time wind speed with the wind speed correction value generated by the previous sampling period. The sum of the operating frequency and the frequency correction value controls the operation of the compressor 21 and the indoor fan 11. If it is a "comfort" level, then in step S213, the above control process is exited and the compressor operates at a low frequency.

As shown in steps S215 to 217, in the sampling period, the corresponding wind speed correction value and/or frequency correction value are also generated from the distance. The cycle program is executed until the end of the sampling period, the result is judged as "comfort" level, and the above control process is exited, and the compressor operates at a low frequency.

According to the control method disclosed in the above embodiment, when the subjective temperature and cooling level of the user in the air-conditioned room is “hot” or “very hot”, the wind speed is first limited according to the distance between the user and the air conditioner. Interval, avoiding a lot of cold wind blowing to the user, so that the user's warm and cold feeling changes from "hot" level to "cold" level, causing overshoot, and secondly, when the ambient temperature in the air-conditioned room is higher, or the outlet temperature is lower When the operating frequency of the compressor is adjusted to an ideal frequency, and the wind speed or the compressor frequency is corrected during the sampling period or a plurality of consecutive sampling periods, and the temperature is lowered in the air conditioning room during the control process. During the process, the user's subjective warmth and sensation can be changed in an asymptotically stable trend and maintained at a "comfortable" level, allowing the user to feel comfortable all the time.

When the user is far away from the air conditioner, it is generally less likely that an overshoot situation will occur. When it is closer to the air conditioner, there is a higher possibility of overshoot. Further, according to the distance of the user from the air conditioner, it is preferable to generate a temperature difference setting value corresponding thereto, and when the distance and the real-time air supply temperature difference both satisfy the condition, a more precise control strategy is executed.

Specifically, as shown in steps S301 to S304 in FIG. 3, if the distance belongs to the first distance setting interval, it is determined whether the real-time air supply temperature difference is greater than or equal to the first temperature difference setting value. If the real-time supply air temperature difference is greater than or equal to the first temperature difference set value, a corresponding frequency correction value is generated in each sampling period, and the compressor operation is controlled by the sum of the operating frequency and the frequency correction value in the next sampling period.

As shown in steps S401 to S404 in FIG. 4, if the distance belongs to the second distance setting interval, it is determined whether the real-time air supply temperature difference is greater than or equal to the second temperature difference setting value, and if the real-time air supply temperature difference is greater than or equal to the second temperature difference setting The fixed value generates a corresponding wind speed correction value in each sampling period, and starts to control the indoor fan operation with the sum of the second set wind speed and the wind speed correction value in the next sampling period.

As shown in steps S501 to S504 in FIG. 5, if the distance belongs to the third distance setting interval, it is determined whether the real-time air supply temperature difference is greater than or equal to the third temperature difference setting value. If the real-time supply air temperature difference is greater than or equal to the third temperature difference set value, the corresponding frequency correction value and the wind speed correction value are generated in each sampling period, and the sum of the running frequency and the frequency correction value is controlled to start compression in the next sampling period. The machine is running, and the indoor fan operation is controlled by the sum of the third set wind speed and the wind speed correction value.

The first temperature difference set value, the second temperature difference set value, and the third temperature difference set value are sequentially incremented. Wind speeds and frequencies allow for a wider range of adjustments when the distance is relatively far.

The wind speed correction value in each sampling period is preferably generated by generating a coding sequence of the sampling period simultaneously when generating the sampling period, and the wind speed correction value in each sampling period is the product of the wind speed correction factor and the coding number of the corresponding sampling period. . Preferably, the wind speed correction value is a negative number.

The frequency correction value in each sampling period is preferably generated by generating a coding sequence of the sampling period while generating the sampling period, and the frequency correction value in each sampling period is the product of the frequency correction factor and the coding number of the corresponding sampling period. . Preferably, the frequency correction value is a negative number.

The sampling period is preferably in seconds.

According to the air-cooling-based air conditioner control method disclosed in the above embodiments, when the person feels hot in the cooling mode, the compressor frequency and the wind speed are accurately adjusted according to the distance between the heat source and the air conditioner to avoid overshoot. The phenomenon.

The invention also discloses an air conditioner 1 which adopts a temperature and cooling sense based air conditioner control method as disclosed in any of the above embodiments. For a specific implementation of the air conditioner control method, refer to the detailed description of any one of the above embodiments and the drawings, and details are not described herein again. The same technical effect can be achieved by the air conditioner using the above air conditioner control method.

It should be noted that any process or method description in the flowcharts or otherwise described herein can be understood as representing code that includes one or more executable instructions for implementing the steps of a particular logical function or process. Modules, segments or portions, and the scope of the preferred embodiments of the invention includes additional implementations, which may not be in the order shown or discussed, including in a substantially simultaneous manner or in reverse order depending on the functionality involved. The functions are performed, which should be understood by those skilled in the art to which the embodiments of the present invention pertain.

It should be understood that portions of the invention may be implemented in hardware, software, firmware or a combination thereof. In the above-described embodiments, multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques well known in the art: having logic gates for implementing logic functions on data signals. Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. The integrated modules, if implemented in the form of software functional modules and sold or used as stand-alone products, may also be stored in a computer readable storage medium.

One of ordinary skill in the art can understand that all or part of the steps carried by the method of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium. When executed, one or a combination of the steps of the method embodiments is included.

In the description of the present specification, the description of the term "some embodiments" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that The technical solutions described in the foregoing embodiments are modified, or the equivalents of the technical features are replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

An air conditioner control method based on warm and cold feeling, characterized in that an air conditioner operates in a cooling mode, and the control method comprises the following steps:

The subjective warm feeling of the heat source in the air-conditioned room is detected in real time, and the subjective warm feeling is detected by the following method:

Sampling the body surface temperature T of the heat source in the air-conditioned room, the ambient temperature T 0 of the air-conditioned room, and the dressing index I clo of the heat source in the air-conditioned room,

The body surface temperature T, the ambient temperature T 0 of the air conditioner, and the wear index I clo of the heat source in the air-conditioned room are brought into the following formula to calculate the heat dissipation amount X of the heat source body; X=(h+(1+0.18h*I clo ) (TT 0 ), where h=h r +h c , h r is the radiant thermal conductivity, and h c is the convective thermal conductivity;

The body surface temperature T, the ambient temperature T 0 of the air conditioner and the dressing index I clo of the heat source in the air-conditioned room are brought into the following formula to calculate the dressing compensation coefficient T r ,T r =(I clo /(TT 0 ))-T 0 /T;

Determine whether the heat dissipation of the body surface is greater than the set heat dissipation amount:

If it is larger than the set heat dissipation amount, the body surface heat dissipation amount X and the dressing compensation coefficient Tr are brought into the following formula to calculate the subjective temperature cooling feeling Y:

Y=-k 1 X+Q 1 +T r ;

If it is less than or equal to the set heat dissipation amount, the body surface heat dissipation amount X and the dressing compensation coefficient Tr are brought into the following formula to calculate the subjective temperature cooling feeling Y:

Y=-k 2 X+Q 2 +T r ; where k 1 <k 2 , Q 1 <Q 2

The subjective temperature and cooling level is determined based on the value of the subjective temperature and cooling feeling Y.
The air-cooling-sensing air conditioner control method according to claim 1, wherein the dressing index I clo is determined according to a correspondence relationship between the dressing information and the dressing index I clo , and the air conditioner receives the wear from the server. Clothing information.
The air-cooling-sensing air conditioner control method according to claim 2, wherein

If the subjective temperature sense level is not lower than the heat level, perform the following control strategy:

Detecting a distance between the heat source and the air conditioner in real time, and determining a wind speed corresponding to the distance according to the correspondence between the distance and the wind speed as a real-time wind speed;

Real-time detecting the return air temperature of the air return air inlet and the air outlet temperature of the air outlet, calculating a temperature difference between the return air temperature and the air outlet temperature, as a real-time air supply temperature difference; when the real-time air supply temperature difference is greater than or equal When the temperature difference is set, the operating frequency is determined according to the relationship between the temperature difference set value and the frequency;

Setting a sampling period, generating a corresponding wind speed correction value and/or a frequency correction value according to the distance in each sampling period; starting the wind speed correction value generated by the real-time wind speed and the previous sampling period in the next sampling period The sum of the sum and/or operating frequency and frequency correction values controls the operation of the compressor and the indoor fan until the subjective temperature sense level is a comfort level and the compressor operates at a low frequency.
The air-cooling-based air conditioner control method according to claim 3, wherein:

If the distance belongs to the first distance setting interval, determining a first set wind speed according to the correspondence between the distance and the wind speed, wherein the first set wind speed is a real-time wind speed;

If the distance belongs to the second distance setting interval, determining a second set wind speed according to the correspondence between the distance and the wind speed, wherein the second set wind speed is a real-time wind speed;

If the distance belongs to the third distance setting interval, determining a third set wind speed according to the correspondence between the distance and the wind speed, wherein the third set wind speed is a real-time wind speed;

The first distance setting interval, the second distance setting interval, and the upper limit threshold of the third distance setting interval are sequentially incremented, and the first set wind speed, the second set wind speed, and the third Set the wind speed to increase in order.
The air-cooling-sensing air conditioner control method according to claim 4, wherein:

If the distance belongs to the first distance setting interval, it is determined whether the real-time air supply temperature difference is greater than or equal to the first temperature difference setting value, and if the real-time air supply temperature difference is greater than or equal to the first temperature difference setting value, then in each A corresponding frequency correction value is generated in the sampling period, and the compressor operation is controlled by the sum of the target frequency and the frequency correction value in the next sampling period.
The air-cooling-sensing air conditioner control method according to claim 5, wherein:

If the distance belongs to the second distance setting interval, it is determined whether the real-time air supply temperature difference is greater than or equal to the second temperature difference setting value, and if the real-time air supply temperature difference is greater than or equal to the second temperature difference setting value, then in each A corresponding wind speed correction value is generated in the sampling period, and the indoor fan operation is controlled to start with the sum of the second set wind speed and the wind speed correction value in the next sampling period.
The air-cooling-sensing air conditioner control method according to claim 6, wherein:

If the distance belongs to the third distance setting interval, it is determined whether the real-time air supply temperature difference is greater than or equal to the third temperature difference setting value, and if the real-time air supply temperature difference is greater than or equal to the third temperature difference setting value, then in each The corresponding frequency correction value and wind speed correction value are generated in the sampling period, and the compressor operation is controlled by the sum of the target frequency and the frequency correction value in the next sampling period, and the indoor fan is controlled by the sum of the third set wind speed and the wind speed correction value. run.
The air-cooling-sensing air conditioner control method according to claim 7, wherein the first temperature difference set value, the second temperature difference set value, and the third temperature difference set value are sequentially incremented.
The air-cooling-sensing air conditioner control method according to claim 8, wherein a coding sequence of the sampling period is set, and a wind speed correction value in each sampling period is a wind speed correction factor and a coding of a corresponding sampling period. The product of the ordinal number, the frequency correction value in each sampling period is the product of the frequency correction factor and the coded ordinal number of the corresponding sampling period, wherein the coding ordinal number of the first sampling period is zero.
An air conditioner characterized by using the air conditioner control method according to any one of claims 1 to 9.