公开(公告)号：US5913891A

公开(公告)日：1999-06-22

申请号：US170306

申请日：1998-10-13

Applicant: Lawrence G. Clawson

Inventor： Lawrence G. Clawson

IPC: F25B41/06 ,  G05D23/02 ,  F25B41/04

CPC classification number: F25B41/062

Abstract: A thermal expansion valve comprises a metal tube for flowing a fluid therethrough, and a metal rod fixed only at a first end in the tube and disposed wholly within the tube, the metal tube having a greater coefficient of expansion than the metal rod. A plug having an orifice therethrough is disposed in the tube proximate a free end of the rod. Lengthwise thermal expansion and contraction of the tube and the rod caused by the temperature of the fluid in the tube and around the rod causes the free end of the rod to retreat from the plug to increase flow of the fluid therethrough, and causes the free end of the rod to approach the plug to restrict flow of the fluid therethrough, respectively.

Abstract translation: 热膨胀阀包括用于使流体流过的金属管，以及仅在管中的第一端固定并且完全设置在管内的金属杆，金属管具有比金属棒更大的膨胀系数。 具有穿过其中的孔口的塞子靠近杆的自由端设置在管中。 由于管内和周围的流体的温度引起的管和杆的纵向热膨胀和收缩导致杆的自由端从塞子退回以增加流体的流动，并使自由端 的杆以分别接近插塞以限制流体的流动。

公开(公告)号：US5819548A

公开(公告)日：1998-10-13

申请号：US878979

申请日：1997-06-19

Applicant: Lawrence G. Clawson

Inventor： Lawrence G. Clawson

IPC: F25B41/06 ,  G05D23/02 ,  F25B41/04

CPC classification number: F25B41/062

Abstract: A thermal expansion valve comprises a metal tube for flowing a fluid therethrough, and a metal rod fixed only at a first end in the tube and disposed wholly within the tube, the metal tube having a greater coefficient of expansion than the metal rod. A plug having an orifice therethrough is disposed in the tube proximate a free end of the rod. Lengthwise thermal expansion and contraction of the tube and the rod caused by the temperature of the fluid in the tube and around the rod causes the free end of the rod to retreat from the plug to increase flow of the fluid therethrough, and causes the free end of the rod to approach the plug to restrict flow of the fluid therethrough, respectively.