Title:
EJECTOR REFRIGERATING DEVICE
Document Type and Number:
Japanese Patent JP2023184132
Kind Code:
A
Abstract:
To provide an ejector refrigerating device that can restrain decreases in refrigeration capacity and device efficiency from occurring when a hybrid type refrigeration cycle in which a compressor is introduced into an ejector refrigeration cycle is applied.SOLUTION: A control unit C switches to an ejector mode of turning off a compressor 7, and making a refrigerant from an evaporator 6 flow to a suction inlet 1b via a switching mechanism 9, when a pressure ratio of a back pressure Pd to a compressor pressure Ps is lower than a first threshold value, switches to a parallel hybrid mode of turning on the compressor 7, and making the refrigerant from the compressor 7 flow to a discharge port 1c via the switching mechanism 9, when the pressure ratio is equal to or higher than the first threshold value and lower than a second threshold value, and switches to a serial hybrid mode of turning on the compressor 7, and making the refrigerant from the compressor 7 flow to the suction inlet 1b via the switching mechanism 9, when the pressure ratio is equal to or higher than the second threshold value.SELECTED DRAWING: Figure 1
Inventors:
YOSHIDA TOKIAKI
MATSUBARA TAKESHI
YASUJIMA KENTETSU
MATSUBARA TAKESHI
YASUJIMA KENTETSU
Application Number:
JP2022098098A
Publication Date:
December 28, 2023
Filing Date:
June 17, 2022
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD
International Classes:
F25B27/02; F25B1/00
Attorney, Agent or Firm:
Sakai International Patent Office
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