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Control method and control system

A control method and electronic control technology, which is applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problem of single operation mode of electronic expansion valves, and achieve the effect of improving real-time performance and accuracy

Pending Publication Date: 2021-06-11
HANGZHOU SANHUA RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The electronic expansion valve obtains the target opening degree through the host computer, and the electronic expansion valve executes the target opening degree to realize the operation control of the electronic expansion valve. However, the host computer has multiple modes, but the operating mode of the electronic expansion valve is relatively single, which makes the electronic expansion valve The real-time and accuracy of control need to be further improved

Method used

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  • Control method and control system
  • Control method and control system

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0024] An embodiment of the present invention provides an opening degree control system of an electronic expansion valve. figure 1 A schematic structural diagram of a control system provided by an embodiment of the present invention is shown. see figure 1 , the control system includes: a controller 100, the controller 100 includes a processing unit 101, a temperature detection unit 102 and a pressure detection unit 103; the temperature detection unit 102 is used to obtain the temperature signal of the outlet of t...

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Abstract

The embodiment of the invention discloses a control system and a control method which can control an electronic expansion valve. The method comprises the steps that a temperature signal of an outlet of the electronic expansion valve and a pressure signal of the outlet of the electronic expansion valve are obtained; a first current superheat degree is determined based on the temperature signal of the outlet of the electronic expansion valve and the pressure signal of the outlet of the electronic expansion valve; and a processing unit controls the electronic expansion valve to operate one of a temperature control mode, a superheat degree control mode and an opening degree control mode according to the requirement of an upper computer or the requirement of a set condition. According to the technical scheme, the control real-time performance and accuracy of the electronic expansion valve are improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of automatic control, and in particular, to a control system and a control method. Background technique [0002] As a throttling element, the electronic expansion valve is used in air-conditioning cooling systems and battery water cooling systems. By controlling the opening of the electronic expansion valve to control the flow of refrigerant, the cooling effect is achieved. [0003] The electronic expansion valve obtains the target opening degree through the host computer, and the electronic expansion valve executes the target opening degree to realize the operation control of the electronic expansion valve. However, the host computer has multiple modes, but the operating mode of the electronic expansion valve is relatively single, which makes the electronic expansion valve The real-time and accuracy of control need to be further improved. Contents of the invention [0004] In vi...

Claims

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Application Information

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IPC IPC(8): F25B41/31
CPCF25B2600/2513F25B49/02F25B41/35F25B2700/191F25B2700/21174F25B2500/19Y02B30/70F25B41/31G05B15/02
Inventor 不公告发明人
Owner HANGZHOU SANHUA RES INST CO LTD
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