當(dāng)加熱時(shí)，本體內(nèi)的蠟膨脹，推動(dòng)膜片，膜片推動(dòng)柱塞，柱塞推動(dòng)推桿，產(chǎn)生升程和推動(dòng)力當(dāng)冷卻時(shí)，彈簧推動(dòng)推桿回位。

When heated, the wax enclosed in the cup, expands and pushes against the diaphragm, the movement is transmitted via the plug to the piston. The guide
maintains the diaphragm, and allows the plug and piston to slide freely.An external spring ensures the return of the.Piston when cooling down.