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Refrigeration device

A refrigeration device, liquid refrigerant technology, used in refrigerators, refrigeration components, refrigeration and liquefaction, etc.

Inactive Publication Date: 2008-07-16
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Embodiment Construction

[0046] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0047] Fig. 1 is a refrigerant circuit diagram of a refrigeration device 1 according to the present embodiment. This freezing device 1 is installed in convenience stores and is used for cooling refrigerated showcases and refrigerated showcases, as well as supplying cold and warm air in the store.

[0048] The refrigerating device 1 described above includes an outdoor unit (heat source side unit) 10, an indoor unit (second use side unit) 20, a refrigerating unit (first use side unit) 30, and a refrigerating unit (first use side unit) 40. Each unit 10 , 20 , 30 , and 40 are connected by gas side communication pipes 51 , 52 and liquid side communication pipes 53 , 54 , 55 to form a refrigerant circuit 50 that performs a vapor compression refrigeration cycle.

[0049] The gas-side connecting pipes 51 and 52 are composed of a first gas-side connecting pipe (low-pr...

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Abstract

In a refrigerating system that has multiple systems of use-side heat exchangers (20, 30, 40) and one liquid-side connecting pipe (53, 54, 55) to connect the liquid pipes of multiple systems, the unused outdoor When the heat exchanger (15) performs heating operation with 100% heat recovery, even when the outdoor air temperature is low, the refrigerant flow in the refrigerant circuit (50) can be stabilized and the refrigeration capacity will not be reduced, and at the same time, it can prevent the malfunction of the device from causing 1 operation is stopped, therefore, the heat source side liquid pipe (62) and liquid receiver (17) of the outdoor unit (10) connected to the liquid side communication piping (53, 54, 55) A liquid refrigerant inflow passage (66) is connected to the inflow port of the liquid refrigerant inflow passage (66), and an on-off valve (SV1) capable of being opened and closed is provided on the liquid refrigerant inflow passage (66).

Description

technical field [0001] The present invention relates to a refrigerating device, in particular to a refrigerating device which is used for refrigeration, freezing and air conditioning and has multiple heat exchangers on the utilization side and can perform 100% heat recovery operation between the heat exchangers on the utilization side . Background technique [0002] Freezers carrying out a refrigeration cycle are known. This type of refrigerating apparatus is widely used as an air conditioner for indoor cooling and heating, and as a cooler for a display case or the like for refrigerating or freezing foodstuffs or the like. Some of such refrigerating devices perform both air-conditioning and refrigerating / freezing. For example, refer to Patent Document 1. This type of refrigerating device is installed in a convenience store, for example, and only one refrigerating device can be installed to cool the air conditioner and display cabinet in the store. [0003] In the above-me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B29/00F25B1/00F25B41/04
CPCF25B2313/0231Y02B30/741F25B2600/2519F25B13/00F25B2700/1931F25B2600/021F25B2500/31F25B2313/02743F25B2400/22F25B2400/16F25B2400/075Y02B30/70F25B29/00F25B1/00F25B49/02F25B41/20
Inventor 竹上雅章谷本憲治小田吉成野村和秀近藤东
Owner DAIKIN IND LTD
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