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Method and system for controlling air mixing valve of fresh air machine based on fuzzy PID control and computer readable storage medium

A control method, fuzzy controller technology, applied in heating and ventilation control systems, heating and ventilation safety systems, mechanical equipment, etc., can solve the problems of not having a full heat exchange process, waste, and difficult to achieve precise control, etc., to achieve Good comfort and energy-saving effect of equipment operation

Active Publication Date: 2019-10-01
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing fresh air equipment simply introduces outdoor fresh air into the room through filtration, and does not have a full heat exchange process, and the air without full heat exchange cannot recover the waste heat of the indoor air, and the energy is not fully utilized, resulting in bad necessary waste
[0003] The Chinese patent with the application number CN20181136904.8 discloses an all-in-one fresh air conditioner with full heat recovery, which proposes a fresh air conditioner with a heat exchanger and full heat recovery, but does not give the fresh air conditioner Detailed ratio, it is difficult to achieve precise control in actual operation

Method used

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  • Method and system for controlling air mixing valve of fresh air machine based on fuzzy PID control and computer readable storage medium
  • Method and system for controlling air mixing valve of fresh air machine based on fuzzy PID control and computer readable storage medium
  • Method and system for controlling air mixing valve of fresh air machine based on fuzzy PID control and computer readable storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] When the indoor CO2 concentration, indoor temperature value, outdoor temperature value, and the number of people in the room respectively correspond to: the indoor CO2 concentration is positive, the indoor temperature value is positive, the outdoor temperature value is positive, and the number of people in the room is large, the table lookup results are as follows: Kp'=M, Ki'=M, Kd'=M, then: the opening of the air mixing valve K= Kp+ Ki+ Kd= Kpo*Kp'+ Kio*Ki'+ Kdo*Kd' =K standard value*(1 +M+M+M), that is, the opening value is increased by 3 M on the basis of the standard value.

[0073] The amount of each M depends on the situation: the standard value can be set to 0.5, M is 20%, m is 10%, mm is -5%, and the opening K of the above air mixing valve is 0.5*(1+0.2+0.2 +0.2)=0.8.

Embodiment 2

[0075] When the indoor CO2 concentration, indoor temperature value, outdoor temperature value, and indoor number correspond to: the indoor CO2 concentration is zero, the indoor temperature value is negatively small, the outdoor temperature value is positively large, and the number of people indoors is positively small, look up the table to get the following results: Kp'=mm, Ki'=m, Kd'=m, then: the opening of the air mixing valve K= Kp+ Ki+ Kd= Kpo*Kp'+ Kio*Ki'+ Kdo*Kd'=K standard value*(1 +mm+m+m), that is, the opening value is increased by 1 mm plus 2 m on the basis of the standard value.

[0076] The amount of M, m, and mm depends on the situation: the standard value can be set to 0.5, M is 20%, m is 10%, mm is -5%, and the opening K of the above air mixing valve is 0.5*(1-0.05 +0.1+0.1)=0.575).

Embodiment 3

[0078] When the indoor CO2 concentration, indoor temperature value, outdoor temperature value, and the number of people in the room respectively correspond to: the concentration of indoor CO2 is negative, the indoor temperature value is negative, the outdoor temperature is negative, and the number of people in the room is negative, the result of the table lookup is as follows Result: Kp'=mm, Ki'=mm, Kd'=mm, then: the opening of the mixing valve K= Kp+ Ki+ Kd= Kpo*Kp'+ Kio*Ki'+ Kdo*Kd'=K standard value* (1+mm+mm+mm), that is, the opening value is increased by 3 mm on the basis of the standard value.

[0079] The amount of each mm depends on the situation: the standard value can be set to 0.5, M is 20%, m is 10%, mm is -5%, and the opening K of the above air mixing valve is 0.5*(1-0.05-0.05 -0.05)=0.425.

[0080] In order to save more energy, the indoor unit of the fresh air blower includes a casing; the casing is provided with an air inlet channel, a return air channel, and a ...

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Abstract

The invention discloses a method and system for controlling an air mixing valve of a fresh air machine based on fuzzy PID control, and relates to the technical field of fresh air machine valve control. According to the method, a plurality of factors affecting CO2 concentration indoors and the CO2 concentration are taken as an input of a fuzzy controller, the correction values Kp', Ki', and Kd' istaken as an output of the fuzzy controller, and the output is obtained from the input of the fuzzy controller, namely, the values of the correction values Kp', Ki', and the Kd' are obtained, and thus,the opening degree K of the air mixing valve is equal to Kpo*Kp'+Kio*Ki'+Kdo*Kd', wherein Kpo, Kio and Kdo are preset standard values. According to the method and the system, the opening of the air mixing valve of the fresh air machine can be intelligently adjusted according to different requirements of different indoor environments for outdoor fresh air and indoor return air, so that the indoorenvironment is more comfortable, and the operation of equipment is more energy-saving.

Description

technical field [0001] The invention relates to the technical field of fresh air fan valve control, in particular to a control method for a fresh air mixing valve based on fuzzy PID control. Background technique [0002] With the improvement of people's requirements for indoor air quality, various equipment with fresh air functions appear on the market, such as fresh air fans, fresh air haze removers, etc. These devices with fresh air function can introduce fresh air into the room to improve the indoor air quality to meet the user's requirements for indoor air quality. However, the existing fresh air equipment simply introduces outdoor fresh air into the room through filtration, and does not have a full heat exchange process, and the air without full heat exchange cannot recover the waste heat of the indoor air, and the energy is not fully utilized, resulting in bad Necessary waste. [0003] The Chinese patent with the application number CN20181136904.8 discloses a fresh a...

Claims

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Application Information

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IPC IPC(8): F24F11/64F24F11/65F24F11/74F24F110/70
CPCF24F11/64F24F11/65F24F11/74F24F2110/70Y02B30/70
Inventor 岳锐陈远远袁琪邓李娇
Owner GREE ELECTRIC APPLIANCES INC
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