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Method of adjusting electronic expansion valve of outdoor unit of air conditioner

An electronic expansion valve, air conditioner outdoor unit technology, applied in heating mode, space heating and ventilation, household heating and other directions, can solve the problem that the adjustment of valve opening cannot be adapted, the adjustment of valve opening is not accurate enough, and it is difficult to achieve air conditioning refrigerant. Issues such as the energy efficiency ratio of the circulation system to achieve the effect of improving the energy efficiency ratio

Active Publication Date: 2016-11-16
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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AI Technical Summary

Problems solved by technology

However, in the existing PID valve control, the PID parameter value is fixed, so that the adjustment of the valve opening cannot adapt to the changes of different types of air conditioners and different operating conditions, and the adjustment of the valve opening is not accurate enough to achieve the ideal air conditioning refrigerant. Energy Efficiency Ratio of Circulation System

Method used

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  • Method of adjusting electronic expansion valve of outdoor unit of air conditioner

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Embodiment Construction

[0014] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0015] See figure 1 , which is a flow chart of an embodiment of the method for controlling the electronic expansion valve of an air conditioner outdoor unit according to the present invention, specifically, a flow chart of an embodiment of controlling the opening of the electronic expansion valve in the air conditioner refrigerant circulation system .

[0016] Such as figure 1 As shown, the method for realizing electronic expansion valve control in this embodiment includes the following steps:

[0017] Step 11: After the compressor is started and running, obtain the real-time operating frequency, real-time discharge temperature and real-time outdoor ambient temperature of the compressor.

[0018] In this step, the real-time operating frequency o...

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Abstract

The invention discloses a method of adjusting an electronic expansion valve of an outdoor unit of an air conditioner. The method comprises the following steps: after a compressor is started to operate, acquiring a real-time operational frequency, a real-time exhaust temperature and a real-time outdoor environmental temperature of the compressor; determining a real-time frequency region where the real-time operational frequency is located and a real-time outdoor environmental temperature region where the real-time outdoor environmental temperature is located according to known frequency regions and outdoor environmental temperature regions; acquiring a real-time PID operational parameter value corresponding to the real-time frequency region and the real-time outer environmental temperature region according to a known corresponding relationship between PID operational parameter values and the frequency regions and the outdoor environmental temperature regions; and by taking a difference value of the real-time exhaust temperature and the set target exhaust temperature as a deviation, performing PID control on the open degree of the electronic expansion valve based on the deviation. By adopting the method disclosed by the invention, precise and stable adjustment on the open degree of the electronic expansion valve is realized.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, in particular relates to the adjustment of the air conditioner, and more specifically relates to a method for adjusting the electronic expansion valve of the outdoor unit of the air conditioner. Background technique [0002] As a new type of control element, the electronic expansion valve is widely used in the air-conditioning refrigerant circulation system. By adjusting the opening of the electronic expansion valve, the refrigerant circulation volume in the system can be adjusted to meet the performance requirements of the air conditioner. Therefore, how to effectively control the electronic expansion valve is the key to measure the energy efficiency ratio of the air conditioning system. [0003] In the prior art, a PID algorithm may be used to control the opening of the electronic expansion valve. Specifically, the difference between the actual exhaust temperature of the compressor a...

Claims

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Application Information

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IPC IPC(8): F24F11/00
Inventor 许文明付裕张明杰王飞徐贝贝刘聚科罗荣邦李波任志强
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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