JPH01121780U

JPH01121780U -

Info

Publication number: JPH01121780U
Application number: JP1766188U
Authority: JP
Priority date: 1988-02-12
Filing date: 1988-02-12
Publication date: 1989-08-17

Description

[Brief explanation of the drawing]

第１図は通常時の温度遮断弁の縦断面図、第２
図は閉弁状態の縦断面図。１……弁ボデイ、２……入口、３……出口、５
……弁口、６……弁座、８……弁体、９……弁ス
テム、１４……感熱素子、１５……連通孔、２０
……溝。 Figure 1 is a vertical cross-sectional view of the temperature cutoff valve during normal operation, Figure 2
The figure is a longitudinal cross-sectional view of the valve in the closed state. 1... Valve body, 2... Inlet, 3... Outlet, 5
... Valve port, 6 ... Valve seat, 8 ... Valve body, 9 ... Valve stem, 14 ... Heat-sensitive element, 15 ... Communication hole, 20
……groove.

Claims

[Scope of utility model registration request]

A valve seat with a valve hole is provided perpendicularly between the inlet and outlet of the valve body, and a valve body is provided with a heat-sensitive chamber that penetrates the valve hole and accommodates a heat-sensitive element made of a shape memory alloy inside. The valve stem is equipped with an interlocking valve stem, and the heat-sensitive chamber of the valve body expands due to martensitic transformation due to temperature rise of the shape-memory alloy heat-sensitive element, and a communication hole is connected to the valve seat to communicate with the fluid on the upstream side even when the valve is closed. The valve body is provided on the inside of the contact surface of the valve body in contact with the valve body, and is open when the heat-sensitive element is not extended. What is claimed is: 1. A temperature cutoff valve housed in a temperature cutoff valve, characterized in that a labyrinth groove is provided on at least one of the sliding surfaces of the valve body and the valve body housing chamber.