JPS6315464U

JPS6315464U -

Info

Publication number: JPS6315464U
Application number: JP10674186U
Authority: JP
Priority date: 1986-07-14
Filing date: 1986-07-14
Publication date: 1988-02-01

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る膨張弁の断面
図、第２図は第１図に示す弁押えの要部斜視図、
第３図は第２図に示す線に沿う要部断面図、第
４，５図は他の実施例に係る弁押えの要部斜視図
、第６図は一般的な自動車用冷房サイクルの概略
図、第７図はそのサイクルをモリエル線図上に表
わしたグラフ、第８図は従来の膨張弁の断面図で
ある。４……コンデンサ、７……エボポレータ、８…
…冷媒入口、９……冷媒出口、１０……ケーシン
グ、１１……連通路、１２……スロート部、１４
……弁作動棒、１５……ダイヤフラム、２６，２
６ａ，２６ｂ……弁押え、２９……ボールベアリ
ング、３２……Ｏリング。 FIG. 1 is a sectional view of an expansion valve according to an embodiment of the present invention, FIG. 2 is a perspective view of essential parts of the valve holder shown in FIG. 1,
Fig. 3 is a sectional view of the main part taken along the line shown in Fig. 2, Figs. 4 and 5 are perspective views of the main part of a valve holder according to other embodiments, and Fig. 6 is a schematic diagram of a general automotive cooling cycle. 7 is a graph showing the cycle on a Mollier diagram, and FIG. 8 is a sectional view of a conventional expansion valve. 4...Capacitor, 7...Evoporator, 8...
... Refrigerant inlet, 9 ... Refrigerant outlet, 10 ... Casing, 11 ... Communication passage, 12 ... Throat section, 14
...Valve operating rod, 15...Diaphragm, 26,2
6a, 26b...Valve holder, 29...Ball bearing, 32...O ring.

Claims

[Scope of utility model registration request]

In the casing 10, which has a refrigerant inlet 8 that communicates with the condenser 4 side and a refrigerant outlet 9 that communicates with the evaporator 7 side, a communication passage 11 that communicates the refrigerant inlet and the refrigerant outlet is formed. A valve body 13 provided in a throat portion 12 formed in the middle of the road is connected to the other end of a valve operating rod 14 whose one end is connected to a diaphragm 15 that undergoes membrane displacement, and the valve is biased by a spring in the direction of the diaphragm 15. Presser foot 26
, 26a, 26b, and the diaphragm 1
In the cooling cycle expansion valve that moves the valve body 13 by the membrane displacement of No. 5 and adjusts the opening degree of the throat portion 12, the valve holder 26, 26a26b
Valve retainer radial movement regulating members 29 and 32 are attached to the outer periphery of the valve holder 29 and 32, which are applied with elastic force toward the inner wall of the casing 10 constituting the communication passage 11 and slide into point or line contact with the inner wall. An expansion valve characterized by: