Title:
冷却貯蔵庫
Document Type and Number:
Japanese Patent JP7386018
Kind Code:
B2
Abstract:
To provide a cooling storage capable of realizing an injection circuit in which a liquid-phase refrigerant flows to a compressor in overheat of the compressor and a gas-phase refrigerant flows in non-overheat of the compressor, while suppressing the number of components.SOLUTION: A closed showcase comprises: a refrigeration circuit 30 in which an invertor compressor 31, a condenser 32, an expansion valve 36 and an evaporator 37 are connected by piping 39 in a circulating manner; and an injection circuit 40 branched from the piping 39 connecting the condenser 32 and the expansion valve 36, and connected to the invertor compressor 31. The injection circuit 40 is branched from the piping 39 at a position where a refrigerant flowing from the condenser 32 to the invertor compressor 31 through the injection circuit 40, has a liquid-phase state in a high load where a rotating speed of the invertor compressor 31 is a prescribed rotating speed or more, and has a gas-phase state in a low load of less than the prescribed rotating speed, between the condenser 32 and the expansion valve 36.SELECTED DRAWING: Figure 2
Inventors:
Yoshiro Kumakiri
Application Number:
JP2019163544A
Publication Date:
November 24, 2023
Filing Date:
September 09, 2019
Export Citation:
Assignee:
Hoshizaki Co., Ltd.
International Classes:
F25B1/00; F25D11/00; F25D19/00
Domestic Patent References:
| JP9303887A | ||||
| JP8271063A | ||||
| JP57097863U | ||||
| JP2000130864A | ||||
| JP55049662A |
Foreign References:
| WO2012147290A1 |
Attorney, Agent or Firm:
Patent Attorney Corporation Akatsuki Joint Patent Office