Title:
AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2018/185922
Kind Code:
A1
Abstract:
This air conditioner has: a plurality of load-side units provided with a plurality of load-side heat exchangers; a heat source-side unit provided with a compressor and a heat source-side heat exchanger which are connected to the plurality of load-side heat exchangers via refrigerant piping; a plurality of expansion valves connected to the plurality of load-side heat exchangers via refrigerant piping; a plurality of liquid temperature sensors which measure the temperature of a liquid refrigerant in the plurality of load-side heat exchangers; a plurality of gas temperature sensors which measure the temperature of a gas refrigerant at the plurality of load-side heat exchangers; a heat source-side gas temperature sensor which measures the temperature of the gas refrigerant suctioned into the compressor; and a control unit which calculates the superheating degree for each of the plurality of load-side heat exchangers and controls the opening degrees of the plurality of expansion valves. When calculating the superheating degree for each of the load-side heat exchangers, the control unit calculates the superheating degree by subtracting the measurement value of the liquid temperature sensors of the load-side heat exchangers to be measured from the measurement value of one temperature sensor among the heat source-side gas temperature sensors and the gas temperature sensors of the load-side heat exchangers to be measured.
Inventors:
MORIYAMA TAKEFUMI (JP)
Application Number:
PCT/JP2017/014444
Publication Date:
October 11, 2018
Filing Date:
April 07, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B5/02; F25B1/00; F25B49/02
Domestic Patent References:
| WO2016203581A1 | 2016-12-22 |
Foreign References:
| JPH01127859A | 1989-05-19 | |||
| JP2005016946A | 2005-01-20 | |||
| JPH0221165A | 1990-01-24 | |||
| JPH11325638A | 1999-11-26 | |||
| JP2002013786A | 2002-01-18 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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