Temperature controlled switch and fuel cell gas in-out system with same

Abstract

The invention relates to a temperature controlled switch. The temperature controlled switch includes a temperature controlled spring, a one-way valve and a flexible connecting chain for connecting thetemperature controlled spring with the one-way valve; the one-way valve includes a valve element and a valve seat, and the valve element and the valve seat are connected by adopting a shaft with an unsymmetric form; the flexible connecting chain and the valve element of the one-way valve are connected by adopting an eccentric hinge joint mode, and thus a laboursome lever is formed by the flexibleconnecting chain and the valve element of the one-way valve; the end, away from the valve element of the one-way valve, of the temperature controlled spring is fixed to a fixed object, and the end, close to the valve element of the one-way valve, of the temperature controlled spring is fixedly hinged to the flexible connecting chain; the temperature controlled spring has the temperature memory function, and elastic deformation occurs along with temperature variation; the length of the flexible connecting chain is larger than the maximum deformation of the temperature controlled spring; and the maximum deformation of the temperature controlled spring is larger than the specified displacement of the valve element of the one-way valve. The temperature controlled switch has the advantages that the structure is simple, the cost is low, type random design is easy, reliability is high, the turn-on degree of the switch is quantitatively adjusted through the temperature, the temperature controlled switch is applied to gas inlet and outlet pipelines of a fuel cell electric pile system, gas and dust impurities are prevented from entering when an electric pile stops working, the electric pileis protected from water loss, and automatic start-stop of gas feeding is achieved.

Description

Technical field [0001] The invention relates to a temperature control switch, in particular to a temperature control switch mechanically controlled by a temperature control spring; [0002] The invention also relates to a fuel cell gas inlet and outlet system with the temperature control switch. Background technique [0003] The temperature-controlled switch is a series of automatic control elements that physically deform inside the switch according to the temperature change of the working environment, thereby generating a turn-on or turn-off action. Mainly used for water dispensers, water heaters, sandwich toasters, dishwashers, dryers, disinfection cabinets, microwave ovens, electric coffee makers, electric cookers, refrigerators, air conditioners, glue machines, office equipment, car seat heaters, etc. appliance. The popular main temperature control switches mostly adopt the automatic control of electronic components to realize the switching function. Not only the mechanical s...

AI Technical Summary

Problems solved by technology

[0004] Usually, the fuel inlet and outlet ports of the fuel cell stack itself are exposed in the air. During the shutdown process, impurities and moisture in the air are easy to enter into the fuel cell stack, affecting the performance of the MEA in the fuel cell stack and affecting the battery stack itself. cause irreparable damage

Images