Patent ID: 6497372
Filing Date: 2002-12-24
Classification: G05D

Abstract:
An automatic temperature control valve comprising:(a) a valve body including therein a valve chamber with a predetermined size having at both ends a fluid inlet and a fluid outlet, wherein said valve body includes: (i) a first body having at its one side a fluid outlet formed through the first body in a longitudinal direction, and a protuberance protruding from an inner periphery thereof; and (ii) a second body assembled with the first body and having a fluid passage formed through the second body in a longitudinal direction, wherein the first body and the second body form together the valve chamber; (b) an expansion and contraction means mounted within the valve chamber of the valve body and expanding and contracting depending on a variation of fluid temperature with respect to a predetermined value; and (c) a first opening and closing means inserted into the expansion and contraction means for opening and closing fluid passages by moving in a first direction and in a second different direction within the valve chamber in response to the expansion and contraction of the expansion and contraction means, wherein said first opening and closing means includes: (i) a valve disk coming into contact with the protuberance protruding from the inner periphery of the valve chamber of the first body at its outer peripheral surface for opening and closing the fluid passage by moving in the second direction and in the first direction by an alien force; and (ii) a bias spring mounted between the other end of the valve disk and the second fixed ring for exerting a biasing force allowing the valve disk to moved away from the protuberance; (d) a fist fixed ring mounted to the first body and a thread connection of the second body, the first fixed ring supporting one side of the coil spring and having a plurality fluid through holes formed through the first fixed ring; (e) a support extending and passing through the first fixed ring and the valve disk, thereby supporting the first fixed ring and the valve disk; and (f) a second fixed ring inserted and positioned around one end of the support for supporting one side of the bias spring.