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Method for controlling opening degree of electronic expansion valve, computer-readable storage medium and air conditioner

An electronic expansion valve and control method technology, applied in mechanical equipment and other directions, can solve problems such as poor parameter control system reliability, poor system operation energy efficiency, etc. correct effect

Active Publication Date: 2020-04-28
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention proposes a method for controlling the opening of the electronic expansion valve, which controls the opening of the electronic expansion valve through the dynamic suction superheat, and solves the problem of system operation caused by fixed target parameters or fixed range target parameters. Poor energy efficiency issues, and system reliability issues due to poor parameter control

Method used

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  • Method for controlling opening degree of electronic expansion valve, computer-readable storage medium and air conditioner
  • Method for controlling opening degree of electronic expansion valve, computer-readable storage medium and air conditioner
  • Method for controlling opening degree of electronic expansion valve, computer-readable storage medium and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: A method for controlling the opening of an electronic expansion valve.

[0024] refer to figure 2 As shown, a method for controlling the opening of an electronic expansion valve, the specific steps are as follows:

[0025] By detecting the compressor discharge temperature T 排气 , Compressor operating frequency F, indoor heat exchanger temperature T 内换热器 , Outdoor side heat exchanger temperature T 外换热器 , calculate the target suction superheat △T target = T 排气 +a1*F+b1*T 内换热器 +c1*T 外换热器 +d1, by detecting the compressor suction temperature T 吸气 , Evaporation side heat exchanger temperature T 蒸发器换热器 , Compressor operating frequency F, calculate the actual suction superheat △T 实际 = T 吸气 -T 蒸发侧换热器 +a2*F+b2, calculate the deviation value △T between the actual suction superheat and the target suction superheat 偏差 =△T 实际 -△T target , according to the deviation value and adjust the opening of the electronic expansion valve through fuzzy control, and co...

Embodiment 2

[0032] Embodiment 2: A method for controlling the opening of an electronic expansion valve.

[0033] refer to image 3 As shown, a method for controlling the opening of an electronic expansion valve, the specific steps are as follows:

[0034] By detecting the compressor discharge temperature T 排气 , Compressor operating frequency F, indoor heat exchanger temperature T 内换热器 , Outdoor side heat exchanger temperature T 外换热器 , calculate the target suction superheat △T target = T 排气 +a1*F+b1*T 内换热器 +c1*T 外换热器 +d1, by detecting the compressor suction temperature T 吸气 , Evaporation side heat exchanger temperature T 蒸发器换热器 , Compressor operating frequency F, calculate the actual suction superheat △T 实际 = T 吸气 -T 蒸发侧换热器 +a2*F+b2, calculate the deviation value △T between the actual suction superheat and the target suction superheat 偏差 =△T 实际 -△T target , according to the deviation value and adjust the opening of the electronic expansion valve through PID control, and contr...

Embodiment 3

[0040] Embodiment 3: A method for controlling the opening of an electronic expansion valve.

[0041] refer to figure 1 As shown, when calculating and analyzing based on the deviation value, fuzzy control combined with PID control is adopted as the control method for adjusting the opening of the electronic expansion valve; the fuzzy control is specifically as described in the electronic expansion valve opening control method described in Example 1, and the PID control is specifically as follows The electronic expansion valve opening control method described in Embodiment 2.

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Abstract

The invention provides a method for controlling the opening degree of an electronic expansion valve, a computer-readable storage medium and an air conditioner. By detecting relevant parameters of airconditioner operation, the target suction superheat degree and the actual suction superheat degree are calculated, a deviation value between the actual suction superheat degree and the target suctionsuperheat degree is calculated, and the opening degree of the electronic expansion valve is calculated, analyzed and adjusted according to the deviation value. The target suction superheat degree andthe actual suction superheat degree are calculated according to the dynamically-changed air conditioner parameters, optimal and best-matched opening degree adjustment of the electronic expansion valveis achieved according to the deviation between the target suction superheat degree and the actual suction superheat degree, and dynamic optimal target control is realized.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method for controlling the opening of an electronic expansion valve, a computer-readable storage medium and an air conditioner. Background technique [0002] Since the indoor and outdoor environmental conditions are changing (such as the inner ring is gradually lowering, and the outer ring changes with the change of sunshine), the control state of the system actuator is changing, and the refrigerant flow in the system is in a dynamic change. The opening control needs Dynamic control is carried out to ensure the best amount of refrigerant in the system and the reliability of system operation. At present, the electronic expansion valve opening control usually takes the suction superheat, exhaust superheat, and exhaust temperature as the control targets, and controls the opening or closing of the electronic expansion valve by comparing the target parameters with the actua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/46F24F11/70F24F11/64F24F11/61
CPCF24F11/46F24F11/61F24F11/64F24F11/70
Inventor 吴俊鸿连彩云安智廖敏梁博夏光辉周金声田雅颂梁之琦翟振坤徐小魏熊绍森
Owner GREE ELECTRIC APPLIANCES INC
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