Title:
CONTROL DEVICE, REFRIGERATOR, CONTROL METHOD AND PROGRAM
Document Type and Number:
Japanese Patent JP2019090552
Kind Code:
A
Abstract:
To provide a control device for a refrigerator that can perform, even when a different refrigerant is used for the refrigerator, overheating degree control suitable to the refrigerant.SOLUTION: A control device 2 comprises: a pressure acquisition part which acquires exit pressure of an evaporator 6 from a pressure sensor 7 detecting the pressure of a refrigerant at an exit of the evaporator 6; a temperature acquisition part which acquires an exit temperature of the evaporator 6 from a temperature sensor 8 detecting the temperature of the refrigerant at the exit of the evaporator 6; a saturation temperature table acquisition part which acquires one of a plurality of saturation temperature tables recorded in a recording part 4, the plurality of saturation temperature tables corresponding to different refrigerants and a saturation temperature table specifying a gas-side saturation temperature at each pressure of the corresponding refrigerant; and an expansion valve control part which controls, based upon the acquired saturation temperature table, the acquired exit pressure, and the acquired exit temperature, an expansion valve opening of an electronic expansion valve 5 in the refrigerator so as to obtain a predetermined overheating degree.SELECTED DRAWING: Figure 1
Inventors:
KADOSHIMA YUTA
KAI MASAKAZU
HACHISUGA KATSUMI
OSADA KAZUMI
KAI MASAKAZU
HACHISUGA KATSUMI
OSADA KAZUMI
Application Number:
JP2017218055A
Publication Date:
June 13, 2019
Filing Date:
November 13, 2017
Export Citation:
Assignee:
MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD
International Classes:
F25B1/00; B60H1/32
Attorney, Agent or Firm:
Yasushi Matsunuma
Eisuke Ito
Hiroyuki Hashimoto
Satoshi Koto
Koichiro Kamata
Taichi Hasegawa
Eisuke Ito
Hiroyuki Hashimoto
Satoshi Koto
Koichiro Kamata
Taichi Hasegawa