| 摘要 |
PURPOSE:To operate an oil injection device without fail in a place where only a heat source exists by attaching a flexible pipe to the tip opening part of a heat pipe provided with a refrigerant fluid therein and allowing the tip of this flexible pipe to make close contact with a metering piston. CONSTITUTION:Bellows-shaped flexible pipe 304 is attached to the tip opening part of a heat pipe 302 provided with a refrigerant fluid 302a therein, and the tip of this flexible pipe 304 is allowed to make close contact with a metering piston 307 positioned by means of a return spring 305. When heating a part 301 of the heat pipe 302 to be heated, the refrigerant fluid 302a is evaporated to permit the flexible pipe 302 to be elongated, allowing the metering piston 307 to be forced in. When cooling a part of the heat pipe 302 to be cooled, pressure within the heat pipe 302 is reduced to permit the metering piston 307 to return to its original position. Accordingly, it is possible to operate an oil injection device without fail in a place where only a heat source exists. |
