Poppet valve with heater
AssigneeSMC Corporation
InventorMamoru Fukuda
Life of this patent
Estimating the term…
Abstract
To allow the whole outer peripheral face of a casing of a poppet valve to be heated efficiently using an inexpensive rod-like heater. A heat transfer cover 30 formed of heat transfer material is provided in a covering manner on an outer peripheral face of a valve casing 10 comprising main ports 11, 12, a flow path 14 connecting these main ports 11, 12, an annular valve seat 15 provided in the flow path 14, a valve member 13 of a poppet type opening/closing the valve seat 15 and a rod 16 coupled to the valve member 13 so as to surround the whole periphery of the valve casing 10, and a rod-like first heater 32 is attached in a heater hole 31 provided in the heat transfer cover 30.
Claims12
A poppet valve with a heater, comprising:
- a valve casing which has a first main port and a second main port, a flow path connecting both the main ports and an annular valve seat provided in the flow path;
- a cylinder which is coupled to the valve casing;
- a valve member of a poppet type which is provided inside the valve casing to open/close the valve seat;
- a rod whose distal end portion is coupled to the valve member and whose proximal end portion extends into the interior of the cylinder;
- a piston which is slidably arranged in the interior of the cylinder and is coupled to the proximal end of the rod;
- a heat transfer cover which is made of heat transfer material and which covers an outer peripheral face of the valve casing so as to surround the whole valve casing;
- and
- one or more first heaters formed in a rod shape, which are built in the heat transfer cover.
A poppet valve with a heater, comprising:
- a valve casing which has a first main port and a second main port, a flow path connecting both the main ports and an annular valve seat provided in the flow path;
- a cylinder which is coupled to the valve casing;
- a valve member of a poppet type which is provided inside the valve casing to open/close the valve seat;
- a rod whose distal end portion is coupled to the valve member and whose proximal end portion extends into the interior of the cylinder;
- a piston which is slidably arranged in the interior of the cylinder and is coupled to the proximal end of the rod;
- a heat transfer cover which is made of heat transfer material and which covers an outer peripheral face of the valve casing so as to substantially surround the whole valve casing;
- one or more first heaters formed in a rod shape, which are inserted into heater holes formed in a thicker portion of the heat transfer cover;
- and
- a heat insulating cover which has a constitution where a heat diffusing plate for diffusing heat has been attached on an inner face of a heat insulating plate, and which is attached to an outside of the heat transfer cover while a constant space is maintained between the heat insulating cover and the heat transfer cover via a spacer.
Dependencies are inferred from the claim text.