JPH0420963U

JPH0420963U -

Info

Publication number: JPH0420963U
Application number: JP6258790U
Authority: JP
Priority date: 1990-06-12
Filing date: 1990-06-12
Publication date: 1992-02-21

Description

[Brief explanation of the drawing]

第１図は本考案の実施例にかかる電子膨張弁の
開度制御装置におけるコントローラの機能対応図
、第２図は本考案の実施例にかかる電子膨張弁の
開度制御装置を付設してなる冷凍サイクル図、第
３図は本考案の実施例にかかる電子膨張弁の縦断
面図、第４図は本考案の実施例にかかる電子膨張
弁の開度制御装置の作用を説明するためのフロー
チヤートである。３……電子膨張弁、１９……コントローラ、２
１……動作方向判定手段、２２……開度制御手段
、Ａ……冷凍サイクル。 Fig. 1 is a functional correspondence diagram of a controller in an electronic expansion valve opening control device according to an embodiment of the present invention, and Fig. 2 is a diagram showing a controller equipped with an electronic expansion valve opening control device according to an embodiment of the present invention. Refrigeration cycle diagram, FIG. 3 is a vertical cross-sectional view of the electronic expansion valve according to the embodiment of the present invention, and FIG. 4 is a flowchart for explaining the operation of the electronic expansion valve opening control device according to the embodiment of the present invention. It's a chat. 3...Electronic expansion valve, 19...Controller, 2
1... Operating direction determining means, 22... Opening degree control means, A... Refrigeration cycle.

Claims

[Claims for Utility Model Registration] 1. In an electronic expansion valve whose opening is controlled by an electronic signal and is configured such that a predetermined amount of operation hysteresis occurs when the direction of operation of the valve is reversed, an operation direction for determining the operation direction. A determining means 21 and a predetermined amount of motion are output when the motion direction determining means 21 determines that the motion direction has not been reversed, and the motion direction determining means 21 determines that the motion direction has been reversed. An opening control device for an electronic expansion valve, characterized in that an opening control means 22 is provided for outputting a corrected operating amount obtained by adding the actuation hysteresis amount to a predetermined operating amount. 2 Built into the refrigeration cycle A, the opening degree is controlled by an electronic signal so that the degree of superheat of the refrigerant in the refrigeration cycle A becomes a predetermined value, and the valve is configured so that a predetermined amount of operational hysteresis occurs when the operating direction of the valve is reversed. In the electronic expansion valve, the operating direction determining means 21 determines the operating direction, and if the operating direction determining means 21 determines that the operating direction is not reversed, outputs a predetermined operating amount, and The present invention is characterized in that an opening control means 22 is provided for outputting a corrected operation amount obtained by adding the actuation hysteresis amount to a predetermined operation amount when the operation direction determination means 21 determines that the operation direction has been reversed. Electronic expansion valve opening control device.