REFRIGERATION SYSTEM AND METHOD FOR DETECTING QUANTITY OF REFRIGERANT OF REFRIGERATION SYSTEM

Title:

REFRIGERATION SYSTEM AND METHOD FOR DETECTING QUANTITY OF REFRIGERANT OF REFRIGERATION SYSTEM

Document Type and Number:

WIPO Patent Application WO/2004/063644

Kind Code:

A1

Abstract:

A refrigeration system comprising a refrigerant circuit including a compressor and a receiver in which the judgment accuracy of a liquid level detecting circuit for judging whether liquid refrigerant is stored up to a specified position of the receiver is enhanced. An air conditioner (1) comprises a main refrigerant circuit (10) and the liquid level detecting circuit (30). The main refrigerant circuit (10) comprises a compressor (21) for compressing gas refrigerant, a heat-source-side heat exchanger (24), the receiver (26) for storing liquid refrigerant, and a utilization-side heat exchanger (52). The liquid level detecting circuit (30) is arranged to take out a part of refrigerant in the receiver (26) from a first fixed position (L₁) thereof, to reduce the pressure thereof while heating, and to return the refrigerant back to the suction-side of the compressor (21) after measuring the refrigerant temperature, thus detecting the fact that the liquid level in the receiver (26) has reached the first fixed position (L₁).

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JP2019015495	REFRIGERATION CYCLE DEVICE
JPH05296528	AIR CONDITIONER

Inventors:

MIZUTANI KAZUHIDE (JP)
MATSUOKA HIROMUNE (JP)

Application Number:

PCT/JP2003/016490

Publication Date:

July 29, 2004

Filing Date:

December 22, 2003

Export Citation:

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Assignee:

DAIKIN IND LTD (JP)
MIZUTANI KAZUHIDE (JP)
MATSUOKA HIROMUNE (JP)

International Classes:

F25B1/00; F25B13/00; F25B45/00; F25B49/02; (IPC1-7): F25B45/00

Foreign References:

JP2002350014A	2002-12-04
JPH11182990A	1999-07-06
JP2002061966A	2002-02-28
EP1033541A1	2000-09-06

Other References: