JPS59123270U

JPS59123270U - Valve seat shape of expansion valve for heat pump

Info

Publication number: JPS59123270U
Application number: JP1705783U
Authority: JP
Inventors: 治高見
Original assignee: 太平洋工業株式会社
Priority date: 1983-02-07
Filing date: 1983-02-07
Publication date: 1984-08-20

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は可逆流式の膨張弁を用いたヒートポンプ回路を
示す構成図、第２図はヒートポンプ用可逆流式膨張弁と
しての電動式膨張弁の構成を示す縦断側面図、第３図は
従来のヒートポンプ用膨張弁の弁開度−流量特性を示す
グラフ、第４図は本考案の弁座の部分拡大図、第５図は
本考案のヒートポンプ用膨張弁の弁開度−流量特性を示
すグラフ。 ■・・・・・・ヒートポンプ回路、■・・・・・・圧縮
機、■・・・・・・四方向切換弁、■・・・・・・室外
側熱交換器、■・・曲回逆流式の膨張弁、■・・・・・
・室内側熱交換器、■・・・・・・電動式の膨張弁、■
・・・・・・モータの回転子、■・・・・・−針状弁、
［相］・・・・・・弁軸、■・・・・・・おねじ、＠・
・・・・・弁本体、０・・・・・・めねじ、■・・・・
・・ねじ部、＠・・曲軸受、［有］・・・・・・ケース
、◎、［相］・・・・・・流体の出入口、０・・・・・
・弁座、０−−−−−−固定子コイル、◎・・・・・・
絞り部。Fig. 1 is a configuration diagram showing a heat pump circuit using a reversible expansion valve, Fig. 2 is a vertical cross-sectional side view showing the configuration of an electric expansion valve as a reversible expansion valve for a heat pump, and Fig. 3 is a conventional FIG. 4 is a partially enlarged view of the valve seat of the present invention, and FIG. 5 is a graph showing the valve opening-flow characteristics of the expansion valve for a heat pump of the present invention. graph. ■・・・Heat pump circuit, ■・・・Compressor, ■・・・Four-way switching valve, ■・・・Outdoor heat exchanger, ■・・・Turn around Backflow type expansion valve, ■...
・Indoor heat exchanger, ■・・・Electric expansion valve, ■
・・・・・・Motor rotor,■・・・・・・-needle valve,
[Phase]・・・Valve stem, ■・・・Male thread, @・
...Valve body, 0...Female thread, ■...
...Threaded part, @...Curved bearing, [With]...Case, ◎, [Phase]...Fluid inlet/outlet, 0...
・Valve seat, 0---Stator coil, ◎・・・・・・
Aperture part.

Claims

[Scope of utility model registration request]

In a reversible flow heat pump expansion valve that controls the degree of throttling of the refrigerant by changing the opening degree between the needle valve ■ and the valve seat [phase], the inside shape of the valve seat @ is shaped like a sharp edge, and the By making the outer shape into a trumpet shape, the flow rate through the valve seat 0 is larger in the refrigerant flow direction from the outside of the valve to the inside of the valve than from the inside of the valve to the outside of the valve. Features the valve seat shape of the expansion valve for reversible heat pumps.