Patent ID: 8714522
Filing Date: 2014-05-06
Classification: F02B,F02D,F02M,F16K,Y02T,Y10T

Abstract:
1. A fluid control valve, comprising: a body forming a fluid passage and including a sealing surface positioned in the fluid passage; a valve body configured to rotate between an open position and closed position within the fluid passage; a first elastic sealing member and a second elastic sealing member provided at a rim portion of the valve body; the first elastic sealing member and the second elastic sealing member each including a lip portion directed towards a center portion of the valve body; each of the lip portions contacting the sealing surface in the closed position of the valve body, and a surface of each lip portion facing the sealing surface is exposed to the fluid passage; in a first state of the closed position of the valve body, the lip portion of the first elastic sealing member being pressed against the sealing surface by fluid pressure in the fluid passage acting on one side of the valve body, and the lip portion of the second elastic sealing member being pressed against the sealing surface by the fluid pressure in the fluid passage acting between a first contact portion of the second elastic sealing member and a second contact portion of the second elastic sealing member; wherein the lip portion of the first elastic sealing member and the lip portion of the second elastic sealing member each includes a base portion extended from the respective elastic sealing member to be directed towards the center portion of the valve body and a tip end portion connected to the base portion and directed to the sealing surface when the valve body is at the closed position; and wherein the first contact portion is provided between the base portion and the tip end portion and is configured to contact the second contact portion of the second elastic sealing member after the tip end portion contacts the sealing surface in a second state of the closed position of the valve body.