Title:
AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/199289
Kind Code:
A1
Abstract:
Provided is an air conditioning device comprising: a first defrost piping that branches, from a main circuit, a portion of a refrigerant discharged from a compressor and supplies the refrigerant to a parallel heat exchanger to be defrosted from among a plurality of parallel heat exchangers; a second defrost piping that returns, to the main circuit, the refrigerant that was supplied to the parallel heat exchanger to be defrosted via the first defrost piping; a first throttle device that is provided to the first defrost piping; a second throttle device that is provided to the second defrost piping and that adjusts the refrigerant pressure of the parallel heat exchanger to be defrosted; a third throttle device that is provided between a connection point between an outlet of the second defrost piping and the main circuit and an indoor heat exchanger functioning as an evaporator from among a plurality of indoor heat exchangers, and that adjusts the refrigerant pressure of the indoor heat exchanger functioning as an evaporator; and a control device. The control device separately controls the second throttle device and the third throttle device during a heating-centered defrost operation.
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Inventors:
WATANABE KAZUYA (JP)
WAKAMOTO SHINICHI (JP)
TAKENAKA NAOFUMI (JP)
TAMURA NAOMICHI (JP)
ARIYAMA TADASHI (JP)
WAKAMOTO SHINICHI (JP)
TAKENAKA NAOFUMI (JP)
TAMURA NAOMICHI (JP)
ARIYAMA TADASHI (JP)
Application Number:
PCT/JP2016/064488
Publication Date:
November 23, 2017
Filing Date:
May 16, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B47/02; F24F11/02; F25B5/02
Domestic Patent References:
| WO2014083867A1 | 2014-06-05 | |||
| WO2010082325A1 | 2010-07-22 | |||
| WO2015140951A1 | 2015-09-24 | |||
| WO2015129080A1 | 2015-09-03 | |||
| WO2015140994A1 | 2015-09-24 |
Foreign References:
| JP2011112233A | 2011-06-09 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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