Thermostatic valve

US10241525B2 · kind B2 · utility

Assignee

• ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO., LTD. · CN

Inventors

• Haoming Qiu · Zhejiang, CN
• Bin Yin · Longbeilingcun, CN
• Xiaojun Qian · Zhejiang, CN

Key dates

• Filing date: Feb 4, 2016
• Grant date: Mar 26, 2019
• Expiry date: Mar 5, 2037

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H57/0413
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A thermostatic valve is provided according to the present application. In the thermostatic valve, a relief ring movable upward and downward is provided in a cavity of a valve body. Under normal conditions, the relief ring abuts against a step on an inner wall of the cavity or another fixing portion via an elastic element, and the cavity is further provided therein with a first passage which can be opened or closed by upward or downward moving of the relief ring. In the case that the fluid pressure in the thermostatic valve is excessively large, the fluid can push the relief ring to compress the elastic element, thus the first passage in the relief ring is opened, and the first flow passage and the third flow passage may simultaneously allow circulation of the fluid, thereby may prevent damage caused by an excessively large fluid pressure in the thermostatic valve.