Title:
THERMO SENSITIVE VALVE
Document Type and Number:
Japanese Patent JPS5857573
Kind Code:
A
Abstract:
PURPOSE:To enable to sense to the temperature of water and to automatically open and close the flow of water by a method wherein the martensite transformation point of a spring, which is one of two springs installed within the valve and acts for parting a valve from a valve seat, and the Curie point of a thermosensitive magnetic material are rendered to be nearly equal to each other. CONSTITUTION:A thermo sensitive device consisting of the tension spring 5, which is made by forming a memory alloy in corrugated shape, and a compression spring 6 made of ordinal spring material is provided within a casing 1. When water with elevated temperature comes in the casing 1 from an intake 12 and the temperature of the valve 4 made of thermo sensitive magnetic material exceeds its Curie point, the valve 4, which is firmly attracted by a permanent magnet 2, is shifted by being pushed by the pressure of the water, because of the disappearance of the attractive force of the valve 4. Consequently, the water flows into the valve and causes to heat the spring 5 of the thermo sensitive device, resulting in transforming the memory alloy from its martensite state to its mother phase and abruptly contracting the device and consequently abruptly discharging the water through the valve from efflux holes 11.
Inventors:
ABE KOUHEI
ASHIKAWA MASATAKA
ASHIKAWA MASATAKA
Application Number:
JP15572681A
Publication Date:
April 05, 1983
Filing Date:
September 30, 1981
Export Citation:
Assignee:
TOHOKU METAL IND LTD
International Classes:
F16K31/70; G12B1/00; (IPC1-7): F16K17/38
Attorney, Agent or Firm:
Ashida Tan