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Refrigerating plant

A refrigeration device and refrigerant technology, which is used in household refrigeration devices, cooling fluid circulation devices, refrigerators, etc., can solve the problems of reduced heating capacity, low compressor discharge pressure, and inability to carry out comfortable air conditioning, and achieves the ability to suppress condensation. The effect of lowering, improving thermal efficiency, improving efficiency

Inactive Publication Date: 2009-06-24
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, because the flow direction of the refrigerant is only changed by the four-way steering valve, the flow of refrigerant flowing to the heat exchanger on the heat source side cannot be fine-tuned, and the discharge pressure of the compressor is too low, which reduces the heating capacity and cannot perform comfortable air conditioning.

Method used

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  • Refrigerating plant
  • Refrigerating plant
  • Refrigerating plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0033] The refrigerating apparatus 1 described above includes an outdoor unit 1A, an indoor unit 1B, a refrigerating unit 1C, and a refrigerating unit 1D, and includes a refrigerant circuit 1E that performs a vapor compression refrigerating cycle. Also, this refrigerant circuit 1E includes a booster unit 1F. The refrigerant circuit 1E includes a first system circuit for refrigeration and freezing and a second system circuit for air conditioning. Furthermore, the above-mentioned refrigerant circuit 1E is configured to be switchable between a cooling cycle and a heating cycle.

[0034] The above-mentioned indoor unit 1B is configured to switch between cooling operation and heating operation, and is installed, for example, in a shopping mall. In addition, the above-mentioned refrigerating unit 1C is installed in the commercial cabinet for refrigeration to cool the air in the commercial cabinet. The above-mentioned refrigerating unit 1D is installed in the commercial cabinet for...

Embodiment approach 2

In this embodiment, if figure 1 As shown, the controller 80 according to Embodiment 1 is provided with a refrigeration device as a control unit 81 of the control device.

[0093]The control unit 81 is configured to suppress a decrease in the condensation capability of the indoor heat exchanger 41 when the flow rate of the refrigerant is varied by the three-way diverter valve 101 on the discharge side of the flow regulator. Specifically, the control unit 81 is configured to reduce the air volume of the outdoor fan 4F of the heat source side heat exchanger 4 . The control unit 81 is provided to suppress the decrease in the heating performance of the indoor heat exchanger 41 when the heating performance of the indoor heat exchanger 41 is extremely reduced during the heat recovery operation of the second heating and cooling operation. That is, if the inverter compressor 2 continues to be operated as it is, when the house-warming capacity is extremely reduced, this decline in the h...

Embodiment approach 3

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PUM

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Abstract

The freezing device (1) includes a compressor (2), an outdoor heat exchanger (4), an expansion mechanism, an indoor heat exchanger (41) for the air-conditioning room, and an indoor heat exchanger (41) for the cooling room (freezer / refrigerator) Refrigerant circuit (1E) for cooling heat exchangers (45, 51). The refrigerant circuit (1E) is provided with the refrigerant ejected from the compressor (2) in a changeable manner when the indoor heat exchanger (41) and the outdoor heat exchanger (4) are used as condensers for heat recovery operation. A three-way diverter valve (101) assigned to the discharge side of the indoor heat exchanger (41) and the outdoor heat exchanger (4). As a result, when the heat obtained by the cooling heat exchanger (45) exceeds the heat required by the indoor heat exchanger (41), the excess heat is discharged without reducing the discharge pressure of the compressor (2).

Description

technical field [0001] The invention relates to a refrigeration device, in particular to a refrigeration device comprising an air-conditioning heat exchanger and a cooling heat exchanger. Background technique [0002] Conventionally, refrigerating apparatuses that perform a refrigerating cycle are known, and are widely used as air conditioners for heating and cooling houses and refrigerators for storing food and the like. This refrigerating device is a device that performs both air conditioning and refrigeration. For example, a plurality of heat exchangers on the utilization side including an air-conditioning heat exchanger and a cooling heat exchanger are installed in convenience stores. This refrigerating device can cool both the air conditioner in the store and the merchandise cabinet with only one (refer to Patent Documents 1 and 2). [0003] In the above-mentioned conventional refrigerating apparatus, heat absorbed by the cooling heat exchanger of the commercial cabine...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B29/00F25B13/00F25D17/02F25B6/02
CPCF25B2313/0231F25B13/00F25B5/02
Inventor 竹上雅章植野武夫谷本宪治阪江觉
Owner DAIKIN IND LTD