Title:
HEAT PUMP-TYPE HEAT SOURCE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/176273
Kind Code:
A1
Abstract:
This heat pump-type heat source device comprises a compressor, a water heat exchanger, an air heat exchanger, a four-way valve, an expansion valve, first and second temperature sensors, and a control unit. The first temperature sensor detects a first temperature of a refrigerant guided by the four-way valve and suctioned into the compressor. The second temperature sensor detects a second temperature of the refrigerant decompressed by the expansion valve and flowing into the air heat exchanger. The control unit calculates the degree of superheating of the refrigerant by subtracting the second temperature from the first temperature, and, when changing the opening degree of the expansion valve so that the calculated degree of superheating becomes a target value, corrects the target value by using a first correction value that changes according to the heat exchange when the refrigerant discharged from the compressor and the refrigerant suctioned into the compressor pass through the four-way valve.
Inventors:
OKAMOTO TAKAHIRO (JP)
Application Number:
PCT/JP2021/038773
Publication Date:
August 25, 2022
Filing Date:
October 20, 2021
Export Citation:
Assignee:
TOSHIBA CARRIER CORP (JP)
International Classes:
F25B1/00; F25B49/02
Domestic Patent References:
| WO2019171588A1 | 2019-09-12 |
Foreign References:
| JP2019190760A | 2019-10-31 | |||
| JP2009109063A | 2009-05-21 | |||
| JPS495486B1 | 1974-02-07 |
Attorney, Agent or Firm:
S & S INTERNATIONAL PPC (JP)
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