Electronic expansion valve adjusting method and device, equipment and storage medium

Through the electronic expansion valve adjustment method matching hierarchical control logic and algorithm, the problem of adjustment failure of the heat pump system under extreme working conditions is solved, the precise dynamic adjustment of the electronic expansion valve opening is achieved, and the energy efficiency and stability of the system are improved.

CN120684831APending Publication Date: 2025-09-23ANHUI ZHIMEI INTELLIGENT TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202511004836.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-21
Publication Date
2025-09-23

AI Technical Summary

Technical Problem

In existing heat pump systems, the control method of the electronic expansion valve has poor dynamic adaptability when facing ambient temperature fluctuations and user load changes, resulting in reduced energy efficiency and the risk of compressor liquid hammer, especially failure under extreme working conditions.

Method used

Adopting hierarchical control logic that matches working condition identification with algorithms, the system obtains the real-time operating parameters of the heat pump system, identifies the operating mode, and dynamically adjusts the opening of the electronic expansion valve based on optimized PID, fuzzy PID and compound control algorithms, including standard mode, low-temperature heating mode and high-load cooling mode.

Benefits of technology

It improves the energy efficiency ratio of the heat pump system, accelerates the dynamic response speed, enhances the working stability under extreme working conditions, reduces the risk of liquid hammer, and improves the safety and service life of the system.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of heat pump systems, in particular to an electronic expansion valve adjusting method, device and equipment and a storage medium, and the method comprises the steps that real-time operation parameters of a heat pump system are obtained to confirm the operation mode of the heat pump system; when the operation mode is the standard mode, the working state of the electronic expansion valve is adjusted based on an optimized PID algorithm; when the operation mode is the low-temperature heating mode, the working state of the electronic expansion valve is adjusted based on a fuzzy PID algorithm; when the operation mode is the high-load refrigeration mode, the working state of the electronic expansion valve is adjusted based on a compound control algorithm; according to the method disclosed by the invention, the problem that a traditional single algorithm is difficult to adapt to all working conditions is solved through hierarchical control logic matched with working condition recognition and an algorithm, and accurate dynamic adjustment of the opening degree of the electronic expansion valve in different scenes is realized; and compared with traditional PID control, the energy efficiency ratio of the heat pump system is increased, the dynamic response speed is increased, and the working stability of the heat pump system under the extreme working condition is remarkably enhanced.
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Citation Information

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