AIR CONDITIONER AND METHOD OF CONTROLLING WASHING OPERATION THEREOF

Title:

AIR CONDITIONER AND METHOD OF CONTROLLING WASHING OPERATION THEREOF

Document Type and Number:

WIPO Patent Application WO/1996/012921

Kind Code:

A1

Abstract:

An air conditioner which includes ports (22, 23, 24) provided on portions in a refrigerant circuit where oil are liable to gather, such as bottoms of a compressor (1), accumulator (5), a receiver (12) and the like, through which ports a refrigerant is extracted and charged. The air conditioner is further provided with a control unit (50) for controlling washing operation for the refrigerant circuit, such that at the time of washing of the refrigerant circuit, washing operation is continued under the control of the control unit (50) for a predetermined period of time while increasing a frequency of the compressor (1) so as to, for example, make a temperature in a discharge pipe (2) higher than a predetermined value, and then is stopped, and the washing operation is resumed after a fixed period of time. In the air conditioner, washing of the refrigerant circuit is efficiently and effectively performed by repeatedly starting and stopping the operation of the compressor (1) predetermined times within a predetermined period of time. After washing, the refrigerant and an oil are replaced by new ones. Such replacement is simply performed through the ports (22, 23, 24).

Inventors:

TAIRA SHIGEHARU (JP)
OONUMA YOUICHI (JP)

Application Number:

PCT/JP1995/002181

Publication Date:

May 02, 1996

Filing Date:

October 24, 1995

Export Citation:

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Assignee:

DAIKIN IND LTD (JP)
TAIRA SHIGEHARU (JP)
OONUMA YOUICHI (JP)

International Classes:

F25B43/02; F25B45/00; (IPC1-7): F25B43/00; F25B45/00; F25B47/00

Foreign References:

JPH0566482U	1993-09-03
JPH04198676A	1992-07-20
JPH05321613A	1993-12-07

Other References: