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Refrigerating apparatus

A refrigeration device and refrigerant technology, which is applied in the directions of refrigerators, refrigeration components, refrigeration and liquefaction, can solve the problems of the decrease of the heating capacity of the indoor unit, and achieve the effect of improving the coefficient of performance and the heating capacity.

Inactive Publication Date: 2009-03-25
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the refrigerant liquefies and accumulates in the stopped indoor heat exchanger in this way, the amount of refrigerant flowing through the running (heating) indoor heat exchanger will be somewhat insufficient, reducing the heating capacity of the indoor unit.

Method used

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Embodiment approach

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Abstract

A refrigerating apparatus including a refrigerant circuit (10) in which such a refrigerating cycle that the pressure of a refrigerant discharged from a compressor (22) is increased to a critical value or higher. When the heating operation is performed in a first indoor heat exchanger (33a) and a second indoor heat exchanger (33b) is stopped to operate, an indoor expansion valve (34b) corresponding to the indoor heat exchanger (33b) being stopped to operate is fully closed.

Description

Technical field [0001] The present invention relates to a refrigeration device that can separate a plurality of use-side heat exchangers to perform heating operations, and in particular, relates to a countermeasure for the accumulation of refrigerant liquefaction in the use-side heat exchanger in a stopped state. Background technique [0002] A refrigeration device that circulates a refrigerant to perform a refrigeration cycle is widely used in air conditioners and the like. As this type of air conditioner, there is a so-called multi-type air conditioner in which a plurality of indoor units are connected to the outdoor unit in parallel with respect to the outdoor unit. [0003] For example, the air conditioner of Patent Document 1 includes one outdoor unit having a compressor and an outdoor heat exchanger (heat source side heat exchanger), and two indoor units each having an indoor heat exchanger (utilization side heat exchanger). The two branch pipes respectively connected to th...

Claims

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Application Information

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IPC IPC(8): F25B6/02F25B1/00F24F11/02
CPCF25B9/008F25B2500/24F25B13/00F25B2600/2513F25B2313/0314F25B2313/02323F25B2700/2104F25B2309/061F25B2313/02741F25B41/31
Inventor 笠原伸一山口贵弘
Owner DAIKIN IND LTD
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