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Title:
MULTI-ROOM TYPE AIR CONDITIONING DEVICE
Document Type and Number:
Japanese Patent JP2011202893
Kind Code:
A
Abstract:

To provide a multi-room type air conditioning device preventing inflow of a refrigerant to a compressor in switching a refrigerant circuit by recovering the refrigerant accumulated in refrigerant piping of a stopped outdoor unit, when the stopped outdoor unit exists when a heating operation is performed under a low outside air temperature.

As a heating operation is switched to a defrosting operation or a cooling operation after performing an operation in a refrigerant recovery mode for a prescribed time, in switching to the defrosting operation or the cooling operation in a case when the heating operation is performed with the outside air temperature at a prescribed temperature or lower, and with at least one outdoor unit stopped, the refrigerant circuit is prevented from being switched with the refrigerant accumulated in the refrigerant pipe of the stopped outdoor unit. Accordingly, inflow of the refrigerant accumulated in the refrigerant pipe of the stopped outdoor unit to an accumulator, and further inflow of the refrigerant not received by the accumulator to the compressor can be prevented, when the refrigerant circuit is switched to flow the refrigerant in the direction opposite to that in the heating operation.


Inventors:
WATANABE MASATOSHI
MATSUNAGA TAKAHIRO
KIMURA TAKASHI
Application Number:
JP2010071205A
Publication Date:
October 13, 2011
Filing Date:
March 26, 2010
Export Citation:
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Assignee:
FUJITSU GENERAL LTD
International Classes:
F24F11/02; F25B43/00



 
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