JPS6266073U

JPS6266073U -

Info

Publication number: JPS6266073U
Application number: JP15767085U
Authority: JP
Priority date: 1985-10-15
Filing date: 1985-10-15
Publication date: 1987-04-24

Description

[Brief explanation of the drawing]

図面は本考案による感温弁の一実施例を示し、
第１図は低温における開状態を示す全体断面図、
第２図は高温における閉状態を示す全体断面図で
ある。符号の説明、１０……感温部ケース、１１……
開口端縁、１２……内周面、１５……通気孔、２
０……バルブケース、２１……開口端縁、２２…
…内周面、２４……第１ポート、２５……第２ポ
ート、２８……第１環状溝、２９……第２環状溝
、３０……弁体、３１……外周面、３５……第１
Ｏリング、３６……第２Ｏリング、４０……第１
スプリング、４１……第２スプリング、Ａ……感
温室、Ｂ……弁室。 The drawing shows an embodiment of the temperature-sensitive valve according to the present invention,
Figure 1 is an overall sectional view showing the open state at low temperatures;
FIG. 2 is an overall sectional view showing the closed state at high temperatures. Explanation of symbols, 10...Temperature sensing part case, 11...
Opening edge, 12...Inner peripheral surface, 15...Vent hole, 2
0... Valve case, 21... Opening edge, 22...
...Inner circumferential surface, 24...First port, 25...Second port, 28...First annular groove, 29...Second annular groove, 30...Valve body, 31...Outer circumferential surface, 35... 1st
O-ring, 36...2nd O-ring, 40...1st
Spring, 41...Second spring, A... Sensitive chamber, B... Valve chamber.

Claims

[Scope of utility model registration request]

a temperature sensing part case and a valve case each having a bottomed cylindrical shape and being connected to each other at an opening edge;
A valve body is provided in both cases to be movable in the axial direction and separates the space inside both cases into a temperature-sensitive chamber on the temperature-sensing unit case side and a valve chamber on the valve case side; A first and second port whose mutual communication is opened and closed by the movement of the valve body, a first spring made of a shape memory alloy and interposed in a compressed state between the valve body and the temperature sensing part case, and a normal In a temperature-sensitive valve comprising a second spring made of a spring material and interposed in a compressed state between the valve body and the valve case, the cylindrical outer peripheral surface of the valve body is on the inner peripheral surface of both the cases. A first annular groove is fitted in the inner circumferential surface near the boundary between the two cases, and is fitted so as to be movable in the axial direction with a considerable distance therebetween.
The O-ring is inserted so as to protrude slightly inward from the inner circumferential surface, and the first O-ring is slidably fitted and abutted on the outer circumferential surface of the valve body, so that the sensitive chamber and the valve chamber are always kept airtight. The first and second ports are opened in the valve case with a gap between them in the axial direction, and a second O-ring is provided in an annular groove formed between the two ports on the inner peripheral surface of the valve case. The second O-ring is inserted so as to protrude somewhat inward from the inner circumferential surface, and is capable of being fitted into and detached from the outer circumferential surface of the valve body to open and close communication between the two ports, and the temperature sensing portion This temperature-sensitive valve features a case with a ventilation hole that communicates with the outside.