REFRIGERATION APPARATUS
First Claim
1. A refrigeration apparatus, comprising:
- a compression mechanism having a plurality of compression elements arranged and configured so that refrigerant discharged from a first-stage compression element of the plurality of compression elements is sequentially compressed by a second-stage compression element of the plurality of compression elements;
a heat source-side heat exchanger arranged and configured to function as a radiator or evaporator of refrigerant;
a usage-side heat exchanger arranged and configured to function as an evaporator or radiator of refrigerant;
a switching mechanism arranged and configured to switch betweena cooling operation state in which refrigerant is sequentially circulated through the compression mechanism, the heat source-side heat exchanger functioning as a refrigerant radiator, and the usage-side heat exchanger functioning as an evaporator of refrigerant; and
a heating operation state in which refrigerant is sequentially circulated through the compression mechanism, the usage-side heat exchanger functioning as a refrigerant radiator, and the heat source-side heat exchanger functioning as an evaporator of refrigerant; and
an intermediate heat exchanger arranged and configured tocool refrigerant discharged from the first-stage compression element and drawn into the second-stage compression element when the switching mechanism has been set to the cooling operation state, andevaporate refrigerant whose heat is radiated in the usage-side heat exchanger when the switching mechanism has been set to the heating operation state.
1 Assignment
0 Petitions
Accused Products
Abstract
A refrigeration apparatus includes a compression mechanism, a heat source-side heat exchanger, a usage-side heat exchanger, a switching mechanism and an intermediate heat exchanger. Refrigerant discharged from a first-stage compression element is sequentially compressed by a second-stage compression element. Each of the heat source-side heat exchanger and the usage-side heat exchanger functions an evaporator or radiator. The switching mechanism is configured to switch between a cooling operation state and a heating operation state. The intermediate heat exchanger is configured to cool refrigerant discharged from the first-stage compression element and drawn into the second-stage compression element when the switching mechanism has been set to the cooling operation state, and to evaporate refrigerant whose heat is radiated in the usage-side heat exchanger when the switching mechanism has been set to the heating operation state.
14 Citations
15 Claims
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1. A refrigeration apparatus, comprising:
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a compression mechanism having a plurality of compression elements arranged and configured so that refrigerant discharged from a first-stage compression element of the plurality of compression elements is sequentially compressed by a second-stage compression element of the plurality of compression elements; a heat source-side heat exchanger arranged and configured to function as a radiator or evaporator of refrigerant; a usage-side heat exchanger arranged and configured to function as an evaporator or radiator of refrigerant; a switching mechanism arranged and configured to switch between a cooling operation state in which refrigerant is sequentially circulated through the compression mechanism, the heat source-side heat exchanger functioning as a refrigerant radiator, and the usage-side heat exchanger functioning as an evaporator of refrigerant; and a heating operation state in which refrigerant is sequentially circulated through the compression mechanism, the usage-side heat exchanger functioning as a refrigerant radiator, and the heat source-side heat exchanger functioning as an evaporator of refrigerant; and an intermediate heat exchanger arranged and configured to cool refrigerant discharged from the first-stage compression element and drawn into the second-stage compression element when the switching mechanism has been set to the cooling operation state, and evaporate refrigerant whose heat is radiated in the usage-side heat exchanger when the switching mechanism has been set to the heating operation state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification