Heat exchange apparatus and refrigerating machine
AssigneeSanyo Electric Co., Ltd.
InventorsMasahisa Otake, Koji Sato, Hiroshi Mukaiyama, Ichiro Kamimura, Norio Sawada
Life of this patent
Estimating the term…
Abstract
In a refrigerating machine, a water cooling device having a cooling tower or an ice heat storage tank is provided as a heat exchanger for cooling refrigerant after heat-exchange in a heat-source side heat exchanger between an outdoor expansion valve and the heat-source side heat exchanger.
Claims17
A heat exchange apparatus including an outdoor unit having a compressor (2), an outdoor heat exchanger (3a, 3b) serving as a heat-source side heat exchanger and an outdoor expansion valve (27a, 27b) and at least one indoor unit (5a, 5b) having an indoor expansion valve (18a, 18b) and an indoor heat exchanger (6a, 6b) serving as a use-side heat exchanger, the outdoor heat exchanger and the indoor heat exchanger being connected to each other through an inter-unit pipe to constitute an heat exchange cycle, characterized in that a heat exchanger (28a, 28b, 65, 85, 101, 111) for carrying out heat exchange between a heat medium and refrigerant after the refrigerant is heat-exchanged in the heat-source side heat exchanger (3a, 3b) or carrying out heat exchange between the heat medium and the refrigerant with no heat-exchange of the refrigerant in the heat-source side heat exchanger (3a, 3b) during operation is provided between the outdoor expansion valve (27a, 27b) and the heat-source side heat exchanger (3a, 3b).
A refrigerating machine comprising:
- an outdoor unit having a compressor (2), an outdoor heat exchanger (3a,3b) serving as a heat-source side heat exchanger and an outdoor expansion valve (27a, 27b);
- and
- at least one indoor unit (5a, 5b) having an indoor expansion valve (18a, 18b) and an indoor heat exchanger (6a, 6b) serving as a use-side heat exchanger, the outdoor heat exchanger and each of the indoor heat exchangers being connected to each other through an inter-unit pipe to constitute an heat exchange cycle, characterized in that one end of the outdoor heat exchanger is selectively connected to one of a refrigerant discharge pipe and a refrigerant suction pipe of the compressor, the inter-unit pipe comprises a high pressure pipe connected to the refrigerant discharge pipe, a low pressure pipe connected to the refrigerant suction pipe and an intermediate pressure pipe connected to the other end of the outdoor heat exchanger, one end of each indoor heat exchanger in each of the indoor units is selectively connected to one of the high pressure pipe and the low pressure gas pipe while the other end of the indoor heat exchanger is connected to the intermediate pressure pipe, whereby cooling operation or heating operation is simultaneously performed in different indoor units or both cooling operation and heating operation is simultaneously performed in a mixing mode in different indoor units, and a cooling heat exchanger for cooling the refrigerant after heat-exchange in the heat-source side heat exchanger between the outdoor expansion valve and the heat-source side heat exchanger during cooling operation.
Dependencies are inferred from the claim text.