Title:
FREEZING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/249984
Kind Code:
A1
Abstract:
The purpose of the present invention is to improve heat exchange efficiency. This turbo freezer comprises a compressor that compresses refrigerant, a condenser that condenses the refrigerant compressed by the compressor, an expansion valve that expands the refrigerant condensed by the condenser, an evaporator (5) that evaporates the refrigerant expanded by the expansion valve, and an expansion valve control unit that controls the aperture of the expansion valve. The evaporator (5) has: a pressure container (11) forming an outer shell; a heat transfer pipe group (16) accommodated inside the pressure container (11), the heat transfer pipe group (16) having a plurality of heat transfer pipes (16a) disposed so as to be lined up in the vertical direction; a refrigerant tray (13) that supplies the refrigerant to the heat transfer pipe group (16) from above; and an eductor (10) for guiding refrigerant that is retained in a lower section of the pressure container (11) and that is not evaporated by the heat transfer pipe group (16) to the refrigerant tray (13). The expansion valve control unit controls the aperture of the expansion valve such that the liquid level of refrigerant retained in a lower section of a casing reaches a level that corresponds to the amount of refrigerant circulated by the eductor (10), said amount changing according to operating conditions of a turbo freezing apparatus.
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| JPS5839472 | 【考案の名称】放冷板 |
Inventors:
WU WENPING (JP)
HASEGAWA YASUSHI (JP)
TOGANO YOSHIE (JP)
YOKOYAMA AKIMASA (JP)
ISHIGURO TATSUO (JP)
YOSHII TAICHI (JP)
YOSHIDA KAZUTO (JP)
HASEGAWA YASUSHI (JP)
TOGANO YOSHIE (JP)
YOKOYAMA AKIMASA (JP)
ISHIGURO TATSUO (JP)
YOSHII TAICHI (JP)
YOSHIDA KAZUTO (JP)
Application Number:
PCT/JP2022/020913
Publication Date:
December 01, 2022
Filing Date:
May 20, 2022
Export Citation:
Assignee:
MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD (JP)
International Classes:
F25B39/02; F25B41/31
Foreign References:
| US3095255A | 1963-06-25 | |||
| US20110056664A1 | 2011-03-10 | |||
| JPH08189726A | 1996-07-23 | |||
| JPS62162868A | 1987-07-18 | |||
| CN101191683A | 2008-06-04 |
Attorney, Agent or Firm:
FUJITA, Takaharu (JP)
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