Temperature-responsive valve

摘要

A valve which opens and closes according to the temperature of the fluid passing through it has a fluid-controlling valve member consisting of a helix of a shape memory effect material having an elastic modulus which varies significantly with temperature in a reversible manner. At relatively low fluid temperature, the turns of the helix are closely compacted and obstruct the flow, while at relatively high fluid temperature, the turns are expanded and allow flow of fluid between them.