Title:
LIQUID COOLING DEVICE AND MAINTENANCE METHOD OF LIQUID COOLING SYSTEM
Document Type and Number:
Japanese Patent JP2019178818
Kind Code:
A
Abstract:
To provide a liquid cooling device in which a condenser is easily maintained.SOLUTION: The liquid cooling device comprises: a refrigerant circuit in which a compressor (1), a condenser (3), an electric expansion valve (EV) and an evaporator (4) are annularly connected; a four-way switch valve (2) switching a refrigerant circulation direction of the refrigerant circuit from a normal cycle to a reverse cycle; a control device (20) controlling the refrigerant circuit and the four-way switch valve (2); and a housing (11) in which the refrigerant circuit, the four-way switch valve (2) and the control device (20) are housed. The condenser (3) is detachably attached to the housing (11). The refrigerant circuit has, at a housing (11) side, closing valves (V1, V2) closing a refrigerant pipe connected to the condenser (3). The control device (20) controls the four-way switch valve (2) and the refrigerant circuit before detaching the condenser (3) from the housing (11) to switch the refrigerant circulation direction of the refrigerant circuit to a reverse cycle, and then starts the compressor (1) to perform a pump-down operation to store the refrigerant at an evaporator (4) side.SELECTED DRAWING: Figure 1
Inventors:
NAKADA TETSUO
MIYAZAKI TAKESHI
MIYAZAKI TAKESHI
Application Number:
JP2018068911A
Publication Date:
October 17, 2019
Filing Date:
March 30, 2018
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
F25B1/00; B23Q11/12; F25B39/02; F25B39/04; F28G9/00
Attorney, Agent or Firm:
Samejima Mutsumi
Hiroshi Yamazaki
Etsuko Isoe
Toshiyuki Yamazaki
Hiroshi Yamazaki
Etsuko Isoe
Toshiyuki Yamazaki