Ihi Corporation

Ihi Machinery and Furnace Co., Ltd.

Ihi Machinery and Furnance Co., Ltd.

Noboru Hiramoto

Kazuhiko Katsumata

Atsushi Hirata

Kazuo Miyoshi

Tetsuya Hirata

Masatoshi Mitsuzuka

Hiroyuki Konishi

Yoshiyasu Matsuda

Noriaki Nagai

Yasuhiro Shigegaki

Noboru Kiya

This vacuum cleaning device is provided with: a vapor chamber in which vapor of a hydrocarbon-based cleaning agent is generated; a condensation chamber; a first heat exchanger in which heat exchange between the vapor and a heating medium is carried out; a cleaning chamber in which a workpiece can be cleaned under vacuum by the condensed cleaning agent that has been generated in the condensation chamber; a compressor that adiabatically compresses and further heats the heating medium that was heated by the first heat exchanger; a second heat exchanger that carries out heat exchange between the heating medium heated by the compressor and the hydrocarbon-based cleaning agent in the vapor chamber; and a vacuum unit that further cools the heating medium that has been cooled by the second heat exchanger by forcing vacuum expansion of the heating medium. The heating medium cycles through the first heat exchanger, the compressor, the second heat exchanger, and the vacuum unit by the heating medium cooled by the vacuum unit being returned to the first heat exchanger.

Vacuum cleaning device

The vacuum heat treatment device includes: a guide plate used to guide a cooling medium supplied by a cooling unit, into a heat-insulating container through one of at least two openings of the heat-insulating container in a state where the two openings of the heat-insulating container are opened; and a movement mechanism used to move the guide plate so that at least part of the guide plate is inserted into a movement area of a cover portion in a state where the two openings of the heat-insulating container are opened and so that the guide plate is retracted from the movement area of the cover portion before the cover portion is moved in order to close the two openings of the heat-insulating container.

Vacuum heat treatment device

Vacuum cleaning apparatus () includes a vapor generating member () for generating vapor of a petroleum-based solvent, a cleaning chamber () allowing a workpiece to be cleaned under reduced pressure by the vapor fed from the vapor generating member, a condensing chamber () that is connected to the cleaning chamber and is maintained in a depressurized state, a temperature maintaining member () that maintains the condensing chamber at a lower temperature than the cleaning chamber, and an opening/closing member () that provides or cuts off communication between the condensing chamber and the cleaning chamber.

Vacuum cleaning apparatus and vacuum cleaning method

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Tokyo, Japan

Noboru Hiramoto