Title:
冷凍機制御装置、ターボ冷凍機、冷凍機制御方法およびプログラム
Document Type and Number:
Japanese Patent JP6835651
Kind Code:
B2
Abstract:
A refrigeration machine control device according to an embodiment of the present invention serves to control a turbo refrigeration machine and is equipped with a pressure reduction rate identification unit for identifying a pressure reduction rate at which foaming does not occur in an oil tank, and a pressure adjustment unit for adjusting the pressure of an evaporator on the basis of the identified pressure reduction rate. The pressure reduction rate identification unit is equipped with: a refrigerant precipitation gas volume calculation unit for calculating the volume of refrigerant gas precipitated from lubricating oil when the pressure is reduced at a prescribed pressure reduction rate; and a determination unit for determining whether or not foaming is permissible on the basis of a comparison between the calculated volume and the volume on the surface of the oil in the oil tank.
Inventors:
Yoshie Togano
Yasushi Hasegawa
Ryosuke Suemitsu
Yasushi Hasegawa
Ryosuke Suemitsu
Application Number:
JP2017070049A
Publication Date:
February 24, 2021
Filing Date:
March 31, 2017
Export Citation:
Assignee:
Mitsubishi Heavy Industries Thermal Systems Co., Ltd.
International Classes:
F25B1/053; F04D27/00
Domestic Patent References:
| JP2015094560A | ||||
| JP2009186030A | ||||
| JP7218010A | ||||
| JP60114659A |
Attorney, Agent or Firm:
Yasushi Matsunuma
Eisuke Ito
Hiroyuki Hashimoto
Satoshi Koto
Koichiro Kamata
Taichi Hasegawa
Ryuichiro Mori
Masatake Shiga
Tadashi Takahashi
Tetsuo Yamazaki
Eisuke Ito
Hiroyuki Hashimoto
Satoshi Koto
Koichiro Kamata
Taichi Hasegawa
Ryuichiro Mori
Masatake Shiga
Tadashi Takahashi
Tetsuo Yamazaki