Relief valve
AssigneeSurpass Industry Co., Ltd.
InventorKazuki Hirai
Life of this patent
Estimating the term…
Abstract
In the relief valve, an annular convex portion 16a that is convexed in a direction in which a valve element 5a moves away from a valve hole 17 along a center axis of the valve hole 17 and that is arranged around the valve hole 17 is formed in a valve chamber 16, an annular concave portion 5d that is concaved in the direction in which the valve element 5a moves away from the valve hole 17 is formed in the valve element 5a, and in a shut-off state, the annular convex portion 16a is accommodated in the annular concave portion 5d, and an annular channel 19 that extends in a direction of the center axis is formed between an outer peripheral surface 16b of the annular convex portion 16a and an inner peripheral surface 5e of the annular concave portion 5d.
Claims3
A relief valve comprising:
- a valve element;
- a body portion in which a valve chamber that accommodates the valve element is formed;
- an inflow channel that guides a fluid flowing in from an upstream side to the valve chamber;
- a valve hole that allows the valve element to be inserted therein, and shuts off passage of the fluid between the valve hole and the valve chamber by contacting the valve element;
- an outflow channel that guides the fluid flowing into the valve hole from the valve chamber to a downstream side;
- and
- a spring that applies an urging force in a direction to bring the valve element into contact with the valve hole to the valve element,
- wherein an annular convex portion having an annular shape in plan view that is convexed in a direction in which the valve element moves away from the valve hole along a center axis of the valve hole and that is arranged around the valve hole is formed in the valve chamber,
- an annular concave portion having an annular shape in plan view that is concaved, in the direction in which the valve element moves away from the valve hole along the center axis of the valve hole is formed in the valve element, and
- in a shut-off state in which the valve element is in contact with the valve hole, the annular convex portion is accommodated in the annular concave portion, and an annular channel having an annular shape in plan view that extends in a direction of the center axis is formed between an outer peripheral surface of the annular convex portion and an inner peripheral surface of the annular concave portion.
Dependencies are inferred from the claim text.