초록 ▼

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,

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.

대표청구항 ▼

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,

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. linder; 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. 11. A poppet valve according to claim 10, wherein the valve member has one or more second heaters, the second heaters are attached to a portion of a front face of the valve member which is positioned in an internal hole of the valve seat to face the flow path at a time of valve closing and the second heaters are covered with a heater cover air-tightly; and a cylindrical heat transfer body provided at its distal end with a heat transfer face with which the valve member comes in contact at a valve opening position is disposed in the interior of the valve casing about the rod concentrically therewith, and one or more third heaters are attached in heater holes provided in the heat transfer body. 12. A poppet valve according to claim 10, wherein the valve casing and the cylinder are coupled to each other via a heat insulating portion for preventing heat from transfer from the valve casing to the cylinder.