WO2019034127A1

WO2019034127A1 - Human body comfort degree-based air conditioner control method, and air conditioner

Info

Publication number: WO2019034127A1
Application number: PCT/CN2018/100892
Authority: WO
Inventors: 王荟桦; 刘聚科; 郝红波
Original assignee: 青岛海尔空调器有限总公司
Priority date: 2017-08-18
Filing date: 2018-08-16
Publication date: 2019-02-21
Also published as: CN107525236A; CN107525236B

Abstract

A human body comfort degree-based air conditioner control method, and an air conditioner, said control method comprising the following steps: acquiring a real-time body surface temperature Ts of a human wearing clothes in an air-conditioned room; acquiring a real-time building inner surface temperature Tq of the air-conditioning room; acquiring a real-time ambient temperature Th in the air-conditioning room; calculating a real-time human body comfort degree C', C' = hr•(Ts - Tq) + hc•(Ts - Th), where hr and hc are constants, hr is a radiation thermal conductivity, hc is a convection thermal conductivity; and controlling the operation of an air conditioner system to enable the real-time human body comfort degree C' to be equal to a standard human body comfort degree C at which the human body in the air-conditioning room feels comfortable.

Description

Air conditioner control method based on human comfort and air conditioner

Technical field

The present invention relates to the field of air conditioning technology, and in particular, to an air conditioner control method based on human body comfort, and an air conditioner using the same.

Background technique

Human comfort is related to human body's physiological functions such as heat balance function, body temperature regulation, endocrine system, and digestive organs, and is affected by a variety of meteorological elements. For example, atmospheric temperature, humidity, air pressure, light, wind speed, and the like. In the prior art, human comfort is usually calculated according to the SSD formula, SSD = (1.818t + 18.18) (0.88 + 0.002f) + (t - 32) / (45 - t) - 3.2v + 18.2. The SSD is the human body comfort index, t is the average temperature, f is the relative humidity, and v is the wind speed. In the prior art, an air conditioning control system based on human body comfort based on the SSD formula is disclosed, as disclosed in the Chinese Patent Application (Application No. 201310206996.7). "In the air conditioning system, an indoor environmental parameter acquisition module, a human body comfort SSD control module, an indoor main control module, a parameter setting module and a display module are provided, and the indoor environmental parameter acquisition module collects indoor temperature, humidity and air flow speed, and the parameter setting module Set temperature and humidity, area code. Human body comfort SSD control module corrects the human body comfort SSD formula coefficient according to the area code, calculates and adjusts the indoor human body comfort SSD, and sends it to the display module display, especially the human body comfort in the meteorological field. SSD is applied to the air conditioning system, taking into account the influence of temperature, humidity and air flow rate on human comfort, and solving the problem that the human body comfort SSD formula varies from region to region."

Experiments have shown that when the temperature is moderate, the effect of humidity on the human body is not significant. Especially in an air-conditioned room, when the air conditioner is cooled, since the temperature of the heat exchanger surface is lower than the dew point temperature of the air, the surface of the heat exchanger forms condensed water, and the humidity in the air-conditioned room is sure to decrease as the temperature decreases. Therefore, when using air conditioners for cooling, the proportion of humidity factors affecting the comfort of the human body will continue to decrease as the air conditioning time increases, and the main factor affecting the comfort of the air conditioner is the temperature in the air-conditioned room. When heating, the adjustment of the humidity of the air conditioner is not obvious. Therefore, when an air conditioner is installed and the air conditioner is in operation, the SSD formula cannot accurately reflect the change of human comfort under a changing condition, and the control method generated based on the SSD formula also has obvious deviation, and cannot Accurately reflect and maintain optimal human comfort.

Summary of the invention

The present invention provides an air conditioner control method that accurately and maintains optimal human comfort.

An air conditioner control method based on human comfort includes the following steps:

Collecting the real-time clothing body surface temperature T _s of the human body in the air-conditioned room;

Collecting the real-time building internal surface temperature T _{q in the} air-conditioned room;

Collecting the real-time ambient temperature T _{h in the} air-conditioned room;

Calculate real-time human comfort C’,

C'=h _r ·(T _s -T _q )+h _c ·(T _s -T _h )

Where h _r and h _c are constants, where h _r is the radiant thermal conductivity and h _c is the convective thermal conductivity;

Controlling the operation of the air conditioning system allows the real-time human comfort C' to be equal to the standard human comfort C that the human body feels comfortable in the air-conditioned room.

Further, the air conditioner controller stores an association relationship between the degree of human comfort deviation and the human body state, and assigns an operation control mode to each human body state;

The air conditioner controller calculates the difference between the real-time human comfort C' and the standard human comfort C, and determines the degree of real-time human comfort deviation according to the difference, determines the human body state according to the association relationship, and invokes the corresponding operation control. The mode controls the air conditioning system to operate in the operational control mode such that the real-time human comfort C' is equal to the standard human comfort C.

Further, if the difference between the real-time human comfort C' and the standard human comfort C is in the first interval, the real-time human comfort deviation is high, and the human body state is uncomfortable, corresponding to the first operational control mode;

If the difference between the real-time human comfort C' and the standard human comfort C is in the second interval, the real-time human comfort deviation is high, and the human body state is relatively uncomfortable, corresponding to the second operational control mode;

If the difference between the real-time human comfort C' and the standard human comfort C is in the third interval, the real-time human comfort deviation is low, and the human body state is relatively comfortable, corresponding to the third operational control mode;

The thresholds of the first interval, the second interval, and the third interval are sequentially decreased, and the compressor target operating frequencies in the first operation control mode, the second operation control mode, and the third operation control mode are sequentially decreased.

Further, if the control air conditioning system operates according to the third operation control mode, the real-time human comfort C is resampled after the first detection period after the target operating frequency of the third operational control mode is reached; if the air conditioning system is controlled Performing according to the second operation control mode, re-sampling the real-time human comfort C after the second detection period after reaching the target operating frequency of the second operational control mode, if the air conditioning system is controlled according to the first operational control If the mode is running, the real-time human comfort C is re-sampled after the third detection period after the target operating frequency of the first operational control mode is reached, wherein the durations of the first detection period, the second detection period, and the third detection period gradually Decrement.

The air conditioner operates according to the working mode set by the user; the air conditioner controller calculates the trend of the real-time human comfort C′ in two consecutive judgment periods, and if the two consecutive judgment periods, the real-time human comfort C′ changes the same trend. The air conditioner controller calculates a rate of change of the real-time human comfort C' relative to the standard human comfort C at the end of the last judgment period, and determines a degree of real-time human comfort deviation according to the change rate, and determines according to the relationship The human body state, and the corresponding operation control mode is invoked, and the air conditioning system is controlled to operate according to the operation control mode, so that the real-time human comfort C' is equal to the standard human comfort C.

Further, if the rate of change of the real-time human comfort C' and the standard human comfort C is in the first interval, the real-time human comfort deviation is high, and the human body state is uncomfortable, corresponding to the first operational control mode;

If the rate of change of the real-time human comfort C' and the standard human comfort C is in the second interval, the real-time human comfort deviation is high, and the human body state is relatively uncomfortable, corresponding to the second operational control mode;

If the rate of change of the real-time human comfort C' and the standard human comfort C is in the third interval, the real-time human comfort deviation is low, and the human body state is relatively comfortable, corresponding to the third operational control mode;

The thresholds of the first interval, the second interval, and the third interval are sequentially decreased, and the upper limit of the compressor target operating frequency in the first operation control mode, the second operation control mode, and the third operation control mode are sequentially decreased.

Preferably, the inner surface temperature of the building is a surface temperature of a wall facing the air outlet of the air conditioner.

Preferably, the inner surface temperature of the building is an average of the inner surface temperatures of all inner walls of the air-conditioned room.

The control method disclosed by the invention can eliminate the interference of humidity in the detection of human comfort, provide a human comfort parameter that can be used by the air conditioning control system, and control the operation of the air conditioner to maintain the comfort of the human body at the standard human comfort. The air conditioning effect is good.

An air conditioner adopts an air conditioner control method based on human comfort, and the control method comprises the following steps:

Calculate real-time human comfort C’,

C'=h _r ·(T _s -T _q )+h _c ·(T _s -T _h )

The invention has the advantages of good air conditioning effect.

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 first embodiment of a method for controlling an air conditioner based on human body comfort according to the present invention;

2 is a flow chart of a second embodiment of a method for controlling an air conditioner based on human body comfort according to the present invention;

3 is a flow chart of a third embodiment of a method for controlling an air conditioner based on human body comfort according to the present invention;

4 is a schematic block diagram of an embodiment of a human body comfort-based air conditioner disclosed in the present invention;

FIG. 5 is a schematic block diagram of another embodiment of a human body comfort based air conditioner according to the present invention.

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.

Referring to FIG. 5, the air conditioner may generally include an indoor unit 10 and an outdoor unit 20, and an electrical connection is formed between the indoor unit 10 and the outdoor unit 20. The indoor unit 10 and the outdoor unit 20 constitute a vapor compression refrigeration cycle system to achieve cooling and heating of the indoor environment. Specifically, the outdoor unit 20 is provided with a compression refrigeration system such as a compressor 400 and an outdoor heat exchanger, and the indoor unit 10 is provided with a compression refrigeration structure such as an indoor heat exchanger 12. The working principle of the vapor compression refrigeration cycle system is a well-known technique of those skilled in the art, and will not be described herein. An air outlet 11 may be disposed on the indoor unit 10 for air supply. The arrow in FIG. 5 is the general air supply direction of the indoor unit 10, and W1, W2, W3, and W4 are the indoor unit 10 in this embodiment. Interior wall. The indoor wall surface may be composed of four straight wall surfaces, or may be composed of a single curved wall surface, or may be composed of any other number of walls of any shape. The indoor unit 10 may be a cabinet type and disposed at any position in the room, or may be wall-mounted and disposed on any wall in the room.

Referring to FIG. 4, the air conditioner 100 may further include an infrared sensor 200 and a controller 300 to detect a human body and an ambient temperature state and control an air conditioner operating state. In some embodiments, the infrared sensor 200 can also be other temperature sensing detection devices, which can be selected by those skilled in the art as needed. The number of infrared sensors 200 may be plural.

1 is a flow chart showing a first embodiment of a method for controlling an air conditioner based on human body comfort disclosed in the present invention. As shown, the control of human comfort in the control method of the present invention does not depend on the SSD data model. Specifically, it includes the following steps:

First, in step S101, the real-time clothing body surface temperature T _s of the user in the air-conditioned room is collected. The human body real-time clothing body surface temperature T _s can be detected by the infrared sensor 200 disposed on the air conditioner. Step S103, the surface temperature T _q collecting real-time, air-conditioned room in the building, the surface temperature T _q and may be employed in the building wall, a top surface, a temperature sensor for detecting the direct contact with the ground, it may be used an infrared sensor or thermal imager Test. The inner surface temperature _Tq may be the wall surface temperature of the air conditioner installation contact, the surface temperature of the wall surface W1 facing the air outlet 11 of the air conditioner, or the temperature of the top wall or the temperature of the ground. For home users, other factors such as the temperature of the room in the upper and lower neighborhoods and the change in the sunshine time caused by the orientation of the building may also affect the temperature of the inner surface of the air-conditioned room. Therefore, the real-time building inner surface temperature _Tq is preferably an average value of the temperatures of all inner wall inner surfaces (W1, W2, W3, W4) of the air-conditioned room. In step S105, the real-time ambient temperature T _{h in the} air-conditioned room is further collected, and the real-time ambient temperature T _h is preferably the intake air temperature of the air-conditioning return air port 13 . The real-time body surface temperature T _{s of the} human body, the real-time building surface temperature T _q , and the sampling frequency of the real-time ambient temperature T _h in the air-conditioned room are the same. The sampling frequency is preferably 1 time/minute. The sampling frequency can be increased or decreased moderately.

Step S107, calculating the real-time human comfort C' by using the human body real-time clothing body surface temperature T _s , the real-time ambient temperature T _h and the real-time building internal surface temperature T _q ,

C'=h _r ·(T _s -T _q )+h _c ·(T _s -T _h )

Where h _r and h _c are constants, h _r is the radiant thermal conductivity, and h _c is the convective thermal conductivity. In general, h _r ranges from 4 W/(m ² · ° C) to 5 W / (m ² · ° C), and h _c ranges from 3 W / (m ² · ° C) to 4 W / (m ² · °C) between. The radiant thermal conductivity and the convective thermal conductivity are typically set and stored in the controller 300 of the air conditioner for retrieval at any time. Under normal circumstances, the human body real-time clothing body surface temperature T _s , real-time ambient temperature T _h and real-time building internal surface temperature T _q does not exceed 1 ° C.

In step S109, after real-time human comfort is obtained, the air-conditioning system is controlled to operate such that the real-time human comfort C' is equal to the standard human comfort C in which the human body feels comfortable in the air-conditioned room. The numerical interval of the standard human comfort C is generally (-0.5, 0.5), and this range can be further narrowed to improve the control precision of the air conditioner. The basic principle of control is to timely meet the requirement of eliminating the deviation between the real-time human comfort C' and the standard human comfort C by controlling the operating frequency of the compressor 400 and the refrigerant flow entering the indoor heat exchanger 12.

In some embodiments, referring to FIG. 2, step S107 may further include the following steps:

In step S209, the air conditioner controller 300 calculates the difference between the real-time human comfort C' and the standard human comfort C.

Step S211, determining a degree of real-time human comfort deviation according to the difference.

Step S213, determining a human body state according to the association relationship, and calling a corresponding operation control mode.

In step S215, the air conditioning system is controlled to operate in the operational control mode such that the real-time human comfort C' is equal to the standard human comfort.

Specifically, the air conditioner controller 300 stores an association relationship between the degree of human comfort deviation and the human body state. For example, the standard human comfort is 0. When the deviation is within the range of (2.5, 3), the real-time human comfort deviation is high, and the human body state is uncomfortable. When the deviation is within the range of (1.5, 2.5), the real-time human comfort deviation is higher, and the human body state is more uncomfortable. When the deviation is within the range of (0.5, 1.5), the real-time human comfort deviation is low, and the human body state is relatively comfortable. Corresponding to the uncomfortable, uncomfortable and comfortable deviation value range of the human body state, that is, the first interval, the second interval and the third interval corresponding to the one-to-one correspondence, the thresholds of the first interval, the second interval and the third interval are successively decreased and mutually Do not overlap to avoid confusion in subsequent controls. The deviation values of the first interval, the second interval, and the third interval may be adjusted according to the type of user in the air-conditioned room. For example, for a user who is more sensitive to the general user's physical condition such as a kindergarten, a school, or a nursing home, each interval range may be The length is reduced, and the upper threshold of the first interval is lowered to improve user comfort. When the deviation is within the range of (0, 0.5), the air conditioner does not operate.

In order to effectively eliminate the deviation between the real-time human comfort C' and the standard human comfort C, an air-conditioner controller 300 assigns an operation control mode to each of the human body states. If the human body state is uncomfortable, the first operational control mode 1 is assigned correspondingly. If the human body state is uncomfortable, the second operation control mode 2 is assigned correspondingly. If the human body is more comfortable, the third operational control mode 3 is assigned. The target operating frequencies of the compressors 400 in the first operational control mode 1, the second operational control mode 2, and the third operational control mode 3 are successively decremented.

The air conditioner controller 300 samples the real-time body surface temperature T _s of the human body in the air-conditioned room according to the set sampling frequency, the real-time building internal surface temperature T _q and the real-time ambient temperature T _h and calculates the real-time human comfort C′, further calculating The difference between the real-time human comfort C' and the standard human comfort C, determine the numerical interval to which the difference belongs, and obtain the real-time human body state according to the relationship between the deviation value interval and the human body state, and call the corresponding according to the human body state The operation control mode controls the air conditioning system to operate according to the operation control mode, so that the deviation between the real-time human comfort C' and the standard human comfort C is gradually reduced until the real-time human comfort C' is equal to the standard human comfort C, thereby Converting the size of the indoor load on which the ordinary air conditioning system operates is converted into true real-time human comfort, while maintaining continuous adjustment of the comfort of the human body, the compressor 400 continuously operates at different rotational speeds, reducing the compressor 400 Irreversible losses caused by frequent start and stop.

In order to achieve the purpose of energy saving, if the control air conditioning system operates according to the real-time human comfort C' according to the third operational control mode during the first detection and control process after the power-on, the target frequency upper limit of the compressor 400 in the operational control mode The lower, the smaller the deviation, the smaller the energy consumption can eliminate the deviation and control the stable operation of the air conditioner, and the load of the entire air-conditioned room is relatively stable. Under stable conditions, the real-time human comfort C' is again sampled after the first detection period after reaching the target operating frequency of the third operational control mode. If the control air conditioning system is operated according to the real-time human comfort C' according to the second operational control mode during the first detection and control after the power-on, the upper limit of the target frequency of the compressor 400 is higher and the deviation is larger in the operational control mode. Medium energy consumption can eliminate the deviation and control the stable operation of the air conditioner. The load of the entire air-conditioned room fluctuates but the fluctuation is not large. Under this condition, the human comfort C' is again sampled after the second detection period after the target operating frequency of the second operational control mode is reached. If the control air conditioning system is operated according to the real-time human comfort C' according to the first operational control mode during the first detection and control process after the power-on, in the operational control mode, the upper limit of the target frequency of the compressor 400 is high, and the deviation is large, and Larger energy consumption can eliminate the deviation and control the stable operation of the air conditioner, and the fluctuation of the load of the entire air-conditioned room is large. Under the condition of large fluctuation, the real-time human comfort C' is again sampled after the third detection period after reaching the target operating frequency of the first operational control mode. The durations of the first detection period, the second detection period and the third detection period are gradually decreased, thereby reducing the frequency of detection and control when the condition of the air-conditioned room is stable, maintaining a lower level of control, when the load of the air-conditioned room fluctuates but When the fluctuation is not large, it is guaranteed to detect the operating frequency and the control action frequency to a certain extent, and maintain the moderate level control. When the load fluctuation of the air-conditioned room is large, the high frequency detection action and the control action are maintained, and the high level control is maintained. It should be noted that the above-mentioned "lower", "higher" and "high" of the target frequency of the compressor 400 do not mean that the absolute value of the target frequency is lower, higher or higher, but compares three operating modes. The result of the first frequency up-conversion target frequency. After the compressor 400 is stopped, the above control process is also performed when starting again.

It should be further explained that, when calculating the deviation, the sign of the data can be retained, and an independent storage unit is reserved in the controller 300 of the air conditioner to store the sign bit. The symbol represents the user's hot and cold, and directly controls the four-way reversing valve to control the air conditioner in the cooling or cooling mode. For example, the standard human comfort is 0. When the deviation is within the range of (-3, -2.5), the human body state is very cold. When the deviation is within the range of (-2.5, -1.5), the human body state is cold. When the deviation is within the range of (-1.5, -0.5), the human body state is slightly cold, and the above three numerical intervals correspond to the first operational control mode, the second operational control mode, and the third operation under heating conditions. Control mode. Correspondingly, when the deviation is within the range of (2.5, 3), the human body state is very hot. When the deviation is within the range of (1.5, 2.5), the human body state is hot. When the deviation is in the range of (0.5, 1.5), the human body state is slightly hot, and the above three numerical intervals correspond to the first operational control mode, the second operational control mode, and the third operational control mode in the cooling condition.

Referring to FIG. 3, a second specific embodiment of the control method disclosed in the present invention is shown. In the present embodiment, the air conditioning control method based on human body comfort can be used as a sub-mode of the inverter air conditioner, and the user can enter the control mode through the remote controller operation. The algorithm of the control mode is stored in the form of a module in the controller 300 of the air conditioner. It is also possible to automatically enter this control mode.

Automatic entry into this control mode can be triggered by the following conditions (or via the following steps). In step S301, the air conditioner operates according to a working mode set by the user, such as a power saving mode, a sleep mode, a low wind mode, and the like in a cooling or heating condition. In step S303, the air conditioner controller 300 calculates the trend of the real-time human comfort C' relative to the standard human comfort C in two consecutive determination periods. For example, if the judgment period is 1 minute, the air conditioner controller 300 determines the trend of the real-time human comfort C′ in two determination periods. If the value of the human comfort C′ is continuously increased, the comfort is obvious. The deterioration trend, the air conditioner controller 300 automatically enters a control mode based on human comfort. Condition S305, if the two consecutive determination periods, the trend of the real-time human comfort C' changes is the same. In step S307, the air conditioner controller 300 calculates the rate of change of the real-time human comfort C' with respect to the standard human comfort at the end of the last judgment period. Step S309, determining the degree of real-time human comfort deviation according to the change rate. In step S311, the human body state is determined according to the association relationship. In step S313, the corresponding operation control mode is called. In step S313, the air conditioning system is controlled to operate in the operational control mode such that the real-time human comfort C' is equal to the standard human comfort C.

Specifically, if the rate of change of the real-time human comfort C' and the standard human comfort C is in the first interval, the real-time human comfort deviation is high, and the human body state is uncomfortable, corresponding to the first operational control mode, the first interval Can be set to (500%, 600%);

If the rate of change of the real-time human comfort C' and the standard human comfort C is in the second interval, the real-time human comfort deviation is higher, the human body state is more uncomfortable, corresponding to the second operational control mode, and the second interval can be set. (300%, 500%);

If the rate of change of the real-time human comfort C' and the standard human comfort C is in the third interval, the real-time human comfort deviation is low, the human body state is relatively comfortable, and the third operational control mode is assigned, and the third interval can be set. (100%, 300%);

The thresholds of the first interval, the second interval, and the third interval are sequentially decreased, and the target operating frequencies of the compressor 400 in the first operational control mode, the second operational control mode, and the third operational control mode are sequentially decreased.

The rate of change refers to the percentage of the difference between the real-time human comfort C' and the standard human comfort C as a percentage of the standard human comfort C at the end of the last judgment period. For example, the standard value C is 0.5 in the set standard human comfort value interval, such as the real-time human comfort C' in the first determination period is 0.7, and the real-time human comfort C in the second determination period. 'With 1.2, enter the control mode based on human comfort. The rate of change = (1.2-0.5) / 0.5 = 140%, the human body state is more comfortable, corresponding to the third operational control mode, and the air conditioning system is controlled until the real-time human comfort C' is equal to the standard human comfort C. In this control mode, the value of the standard human comfort C is not zero.

In order to achieve the purpose of energy saving, if the control air conditioning system operates according to the real-time human comfort C' according to the third operational control mode during the first detection and control process after the power-on, the target frequency of the compressor 400 is compared in the operational control mode. Low, small deviation, low energy consumption can eliminate the deviation and control the stable operation of the air conditioner, and the load of the entire air-conditioned room is relatively stable. Under stable conditions, the real-time human comfort C' is again sampled after the first detection period after reaching the target operating frequency of the third operational control mode. If the control air conditioning system operates according to the real-time human comfort C' according to the second operational control mode during the first detection and control process after the power-on, the target frequency of the compressor 400 is higher and the deviation is larger in the operational control mode. Moderate energy consumption can eliminate the deviation and control the stable operation of the air conditioner. The load of the entire air-conditioned room fluctuates but the fluctuation is not large. Under this condition, the human comfort C' is again sampled after the second detection period after the target operating frequency of the second operational control mode is reached. If the control air conditioning system operates according to the real-time human comfort C' according to the first operational control mode during the first detection and control process after the power-on, the target frequency of the compressor 400 is high and the deviation is large in the operation control mode. The large energy consumption can eliminate the deviation and control the stable operation of the air conditioner, and the fluctuation of the load of the entire air-conditioned room is large. Under the condition of large fluctuation, the real-time human comfort C' is again sampled after the third detection period after reaching the target operating frequency of the first operational control mode. The durations of the first detection period, the second detection period, and the third detection period are gradually decreased, thereby reducing the frequency of detection and control when the condition of the air-conditioned room is stable, maintaining a lower level of control, when the load of the air-conditioned room fluctuates but When the fluctuation is not large, it is guaranteed to detect the operating frequency and the control action frequency to a certain extent, and maintain the moderate level control. When the load fluctuation of the air-conditioned room is large, the high frequency detection action and the control action are maintained, and the high level control is maintained. It should be noted that the above-mentioned "lower", "higher" and "high" of the target frequency of the compressor 400 do not mean that the absolute value of the target frequency is lower, higher or higher, but compares three operating modes. The result of the first frequency up-conversion target frequency. After the compressor 400 is stopped, the above control process is also performed when starting again.

By adopting the control method disclosed in the above embodiment of the present invention, the interference of the humidity in the detection of the human comfort can be excluded, the human comfort parameter that can be used by the air conditioning control system is provided, and the operation of the air conditioner is controlled to maintain the comfort of the human body at all times. Standard human body comfort, air conditioning effect is good.

The invention also discloses an air conditioner 100, which adopts the air conditioner control method based on human body comfort disclosed in the above embodiment. The specific steps of the control method are described in detail in the above embodiments, and the air conditioners using the above-described human body comfort-based air conditioner control method have the same technical effects.

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 human comfort includes the following steps:

Collecting the real-time clothing body surface temperature T s of the human body in the air-conditioned room;

Collecting the real-time building internal surface temperature T q in the air-conditioned room;

Collecting the real-time ambient temperature T h in the air-conditioned room;

Calculate real-time human comfort C’,

C'=h r ·(T s -T q )+h c ·(T s -T h )

Where h r and h c are constants, where h r is the radiant thermal conductivity and h c is the convective thermal conductivity;

Controlling the operation of the air conditioning system allows the real-time human comfort C' to be equal to the standard human comfort C that the human body feels comfortable in the air-conditioned room.
The air conditioner control method based on human body comfort according to claim 1, wherein:

The air conditioner controller stores an association relationship between the degree of human comfort deviation and the human body state, and assigns an operation control mode to each human body state;

The air conditioner controller calculates the difference between the real-time human comfort C' and the standard human comfort C, and determines the degree of real-time human comfort deviation according to the difference, determines the human body state according to the association relationship, and invokes the corresponding operation control. The mode controls the air conditioning system to operate in the operational control mode such that the real-time human comfort C' is equal to the standard human comfort C.
The air conditioner control method based on human body comfort according to claim 2, wherein

If the difference between the real-time human comfort C' and the standard human comfort C is in the first interval, the real-time human comfort deviation is high, and the human body state is uncomfortable, corresponding to the first operational control mode;

If the difference between the real-time human comfort C' and the standard human comfort C is in the second interval, the real-time human comfort deviation is high, and the human body state is relatively uncomfortable, corresponding to the second operational control mode;

If the difference between the real-time human comfort C' and the standard human comfort C is in the third interval, the real-time human comfort deviation is low, and the human body state is relatively comfortable, corresponding to the third operational control mode;

The thresholds of the first interval, the second interval, and the third interval are sequentially decreased, and the compressor target operating frequencies in the first operation control mode, the second operation control mode, and the third operation control mode are sequentially decreased.
The human body comfort-based air conditioner control method according to claim 3, wherein

If the control air conditioning system operates according to the third operational control mode, re-sampling the real-time human comfort C after the first detection period after reaching the target operational frequency of the third operational control mode; if the air conditioning system is controlled as described When the second operation control mode is running, the real-time human comfort C is resampled after the second detection period after the target operating frequency of the second operational control mode is reached, and if the air conditioning system is controlled to operate according to the first operational control mode, Then, the real-time human comfort C is re-sampled after the third detection period after the target operating frequency of the first operational control mode is reached, wherein the durations of the first detection period, the second detection period, and the third detection period are gradually decreased.
The human body comfort-based air conditioner control method according to claim 1, wherein

The air conditioner controller stores an association relationship between the degree of human comfort deviation and the human body state, and assigns an operation control mode to each human body state;

The air conditioner operates according to the working mode set by the user; the air conditioner controller calculates the trend of the real-time human comfort C′ in two consecutive judgment periods, and if the two consecutive judgment periods, the real-time human comfort C′ changes the same trend. The air conditioner controller calculates a rate of change of the real-time human comfort C' relative to the standard human comfort C at the end of the last judgment period, and determines a degree of real-time human comfort deviation according to the change rate, and determines according to the relationship The human body state, and the corresponding operation control mode is invoked, and the air conditioning system is controlled to operate according to the operation control mode, so that the real-time human comfort C' is equal to the standard human comfort C.
The air conditioner control method based on human body comfort according to claim 5, wherein

If the rate of change of the real-time human comfort C' and the standard human comfort C is in the first interval, the real-time human comfort deviation is high, and the human body state is uncomfortable, corresponding to the first operational control mode;

If the rate of change of the real-time human comfort C' and the standard human comfort C is in the second interval, the real-time human comfort deviation is high, and the human body state is relatively uncomfortable, corresponding to the second operational control mode;

If the rate of change of the real-time human comfort C' and the standard human comfort C is in the third interval, the real-time human comfort deviation is low, and the human body state is relatively comfortable, corresponding to the third operational control mode;

The thresholds of the first interval, the second interval, and the third interval are sequentially decreased, and the upper limit of the compressor target operating frequency in the first operation control mode, the second operation control mode, and the third operation control mode are sequentially decreased.
The human body comfort-based air conditioner control method according to claim 6, wherein

If the control air conditioning system operates according to the third operational control mode, re-sampling the real-time human comfort C after the first detection period after reaching the target operational frequency of the third operational control mode; if the air conditioning system is controlled as described When the second operation control mode is running, the real-time human comfort C is resampled after the second detection period after the target operating frequency of the second operational control mode is reached, and if the air conditioning system is controlled to operate according to the first operational control mode, Then, the real-time human comfort C is re-sampled after the third detection period after the target operating frequency of the first operational control mode is reached, wherein the durations of the first detection period, the second detection period, and the third detection period are gradually decreased.
The air conditioner control method based on human body comfort according to claim 1, wherein the inner surface temperature of the building is a surface temperature of a wall facing the air outlet of the air conditioner.
The human body comfort-based air conditioner control method according to claim 1, wherein the inner surface temperature of the building is an average value of inner surface temperatures of all inner walls of the air-conditioned room.
An air conditioner characterized by using the human body comfort-based air conditioner control method according to claim 1.