Title:
REFRIGERATION DEVICE
Document Type and Number:
Japanese Patent JP2018132292
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve security of a refrigeration device.SOLUTION: A refrigeration device 100 includes: a compressor 11; a heat source side expansion valve 15 which comes into a closed state for most greatly preventing the flow of a refrigerant to a utilization side refrigerant circuit RC2 by being controlled to a minimum opening; a fusible plug 22; a controller 60; and a refrigerant leakage sensor 40 for detecting refrigerant leakage in the utilization side refrigerant circuit RC2. The fusible plug 22 is arranged in the refrigerant circuit RC, and communicates the refrigerant circuit RC with the outside space by coming into an open state. In the case where the refrigerant leakage in the utilization side refrigerant circuit RC2 is detected by the refrigerant leakage sensor 40, the controller 60 controls the heat source side expansion valve 15 into a closed state in refrigerant leakage first control, and shifts the fusible plug 22 into an open state in refrigerant leakage second control.SELECTED DRAWING: Figure 3
Inventors:
SAKAE SATORU
MESAKI TAKEMUNE
MESAKI TAKEMUNE
Application Number:
JP2018024380A
Publication Date:
August 23, 2018
Filing Date:
February 14, 2018
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
F25B49/02; F25B1/00; F25B43/00
Domestic Patent References:
| JP2010002137A | 2010-01-07 | |||
| JPH01300170A | 1989-12-04 | |||
| JP2005530650A | 2005-10-13 | |||
| JPS6174078U | 1986-05-19 | |||
| JP2002228281A | 2002-08-14 | |||
| JP2016166680A | 2016-09-15 | |||
| JP2016090175A | 2016-05-23 |
Foreign References:
| WO2017212599A1 | 2017-12-14 | |||
| EP2233865A2 | 2010-09-29 | |||
| WO2016151641A1 | 2016-09-29 |
Attorney, Agent or Firm:
Shinki Global IP Patent Corporation