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Air conditioning system

A technology of reconciliation and air, which is applied in the field of air conditioning devices, which can solve the problems that indoor heat exchangers cannot be used for warming operations, and achieve the effects of suppressing the amount of warm air, improving comfort, and suppressing air flu

Inactive Publication Date: 2009-07-08
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, since the indoor heat exchanger located downstream of the expansion valve must be used as an evaporator, the indoor heat exchanger cannot perform the heating operation.

Method used

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  • Air conditioning system
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[0099] The above-described embodiments and modifications may also have the following configurations.

[0100] For example, in the above-mentioned embodiments, the outdoor heat exchanger is used as the outdoor heat exchanger 27, but it is not limited thereto, and may be configured as a heat exchanger for exchanging heat between a refrigerant and another heat medium such as water or brine.

[0101] In addition, in the above-mentioned embodiments of the present invention, the bypass passage 28 may be omitted, and the indoor radiant panel 23 and the indoor air heat exchanger 25 may be provided independently.

[0102] In addition, in the above-mentioned embodiments and the like, an air conditioner capable of cooling operation has been described, but the present invention can also be applied to an air conditioner capable of heating operation and defrosting operation in addition to cooling operation.

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Abstract

An air conditioning system includes a refrigerant circuit (20) in which a compressor (21), an indoor radiant panel (23), a first expansion valve (24), a room air heat exchanger (25), a second expansion valve (26) and an outdoor air heat exchanger (27) are connected in this order and which operates in a refrigeration cycle by reversibly circulating refrigerant therethrough. During a defrosting operation, the first expansion valve (24) is controlled to reduce the refrigerant pressure so that in a cooling cycle the refrigerant releases heat in the outdoor air heat exchanger (27) and the room airheat exchanger (25) and evaporates in the indoor radiant panel (23). Thus, the air conditioning system concurrently provides the defrosting of the outdoor air heat exchanger (27) and the room heating of the room air heat exchanger (25).

Description

technical field [0001] The present invention relates to air conditioners and in particular to comfort during defrost operation. Background technique [0002] Hitherto, air-conditioning devices for indoor heating by radiant heat and warm air including radiant panels and indoor heat exchangers are known. For example, the air conditioner of Patent Document 1 includes a refrigerant circuit that sequentially connects a compressor, an outdoor heat exchanger, an expansion valve, an indoor heat exchanger, and a radiation panel. In addition, the refrigerant circuit is configured such that the refrigerant reversibly circulates to perform a refrigerating cycle. [0003] In this air conditioner, when the heating operation (heating cycle) is in progress, the refrigerant discharged from the compressor flows through the condensate in the order of the radiant panel and the indoor heat exchanger. Radiant heat provides interior. Also, in the case of cooling operation (cooling cycle), the i...

Claims

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Application Information

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IPC IPC(8): F24F11/02F24F1/00F25B1/00F25B47/02
CPCF25B2313/0231F25B2313/02344F25B47/02F25B2313/02321F25B13/00F25B2600/2513F25B9/008F24F3/001F25B2313/0234F25B2309/061F25B2313/02342F25B2341/0662F25B2313/02741F25B41/39F24F11/42F24F11/62
Inventor 松冈弘宗栗原利行
Owner DAIKIN IND LTD
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