Title:
REFRIGERATION CYCLE APPARATUS AND REFRIGERATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/053858
Kind Code:
A1
Abstract:
This refrigeration cycle apparatus has a refrigerant circuit in which a compressor, a condenser, a subcooler, a throttle device, and an evaporator are connected via refrigerant piping, and which circulates a refrigerant including a refrigerant having a temperature gradient. The subcooler is provided with a refrigerant amount determination unit that: causes the subcooling degree of the refrigerant, the subcooling degree being a temperature difference between the temperature from the condenser to a refrigerant inflow port of the subcooler and the temperature at a refrigerant outflow port on the downstream side of the subcooler, to be greater than a temperature gradient created when the amount of refrigerant is insufficient between the refrigerant inflow port and the refrigerant outflow port of the subcooler; compares the subcooling degree of the refrigerant with a determination threshold which is set to a value greater than the temperature gradient of the refrigerant; and determines whether the amount of refrigerant filled in the refrigerant circuit is insufficient or not.
Inventors:
SATA HIROSHI (JP)
ISHIKAWA TOMOTAKA (JP)
ISHIKAWA TOMOTAKA (JP)
Application Number:
PCT/JP2017/033320
Publication Date:
March 21, 2019
Filing Date:
September 14, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B49/02; F25B1/00
Domestic Patent References:
| WO2017094059A1 | 2017-06-08 |
Foreign References:
| JP2005207644A | 2005-08-04 | |||
| JPH10288428A | 1998-10-27 | |||
| JPH07151400A | 1995-06-13 | |||
| JPH09105567A | 1997-04-22 |
Other References:
See also references of EP 3683523A4
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
Download PDF: