Title:
REFRIGERANT TREATMENT DEVICE
Document Type and Number:
Japanese Patent JP2019138610
Kind Code:
A
Abstract:
To provide a refrigerant treatment device which performs work for returning a refrigerant remaining in a hose to an air-conditioning system side after confirming that the high-pressure hose is removed from the air-conditioning system, when performing the work for returning the refrigerant remaining in the hose to the air-conditioning system side after charging work.SOLUTION: A refrigerant treatment device comprises: high-pressure/low-pressure hoses 2, 3 which are attached and detached to/from high-pressure/low-pressure service valves VH, VL of an air-conditioning system; a high-pressure side pressure sensor 8 and a low-pressure side pressure sensor for detecting the pressure of the high-pressure/low-pressure hoses 2, 3; a refrigerant tank 16 for storing a refrigerant; and a compressor 14 for collecting the refrigerant to the refrigerant tank 16, and charging the refrigerant into the air-conditioning system. The refrigerant treatment device comprises a check function for performing low-pressure charging for making the air-conditioning system suck the refrigerant remaining in the high-pressure hose 2 from the low-pressure hose 3 after a finish of an operation for charging the refrigerant, and discriminating a connection state between the air-conditioning system and the high-pressure hose 2 on the basis of a variation state of pressure which is detected by the high-pressure side pressure sensor 8 at a start of the low-pressure charging.SELECTED DRAWING: Figure 7
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Inventors:
KOBAYASHI TAKEHIRO
MATSUZAKI RYO
SUNAHARA HIROMITSU
MATSUZAKI RYO
SUNAHARA HIROMITSU
Application Number:
JP2018025172A
Publication Date:
August 22, 2019
Filing Date:
February 15, 2018
Export Citation:
Assignee:
MK SEIKO CO LTD
International Classes:
F25B45/00
Domestic Patent References:
| JP2013160409A | 2013-08-19 | |||
| JPS59101176U | 1984-07-07 | |||
| JP2005055077A | 2005-03-03 | |||
| JP2014085082A | 2014-05-12 | |||
| JPS5668875U | 1981-06-08 | |||
| JP3209805U | 2017-04-06 | |||
| JP2002364937A | 2002-12-18 |
Foreign References:
| US20140182312A1 | 2014-07-03 |