Refrigerant cycle system
AssigneeDaikin Industries, Ltd.
InventorsTakuro Yamada, Eiji Kumakura, Atsushi Yoshimi, Ikuhiro Iwata, Tomoatsu Minamida
Life of this patent
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Abstract
A refrigerant cycle system includes: a primary-side cycle of a vapor compression type that circulates a first refrigerant; a secondary-side cycle of a vapor compression type that circulates a second refrigerant; and a cascade heat exchanger that exchanges heat between the first refrigerant and the second refrigerant. The secondary-side cycle includes a secondary-side heat exchanger that uses cold or heat obtained by the second refrigerant from the cascade heat exchanger. The secondary-side heat exchanger includes a flat multi-hole pipe.
Claims3
A refrigerant cycle system comprising:
- a primary-side cycle of a vapor compression type that circulates a first refrigerant;
- a secondary-side cycle of a vapor compression type that circulates a second refrigerant;
- and
- a cascade heat exchanger that exchanges heat between the first refrigerant and the second refrigerant, wherein
- the secondary-side cycle comprises a secondary-side heat exchanger disposed indoor and that uses cold or heat obtained by the second refrigerant from the cascade heat exchanger,
- the secondary-side heat exchanger comprises a flat multi-hole pipe,
- the cascade heat exchanger is a plate heat exchanger,
- the cascade heat exchanger comprises:
- a first refrigerant passage that allows the first refrigerant to pass;
- and
- a second refrigerant passage that allows the second refrigerant to pass, and
- a first volume V1 of the secondary-side heat exchanger and a second volume V2 of the second refrigerant passage satisfies 0.80≤V1/V2≤1.20.
A refrigerant cycle system comprising:
- a primary-side cycle of a vapor compression type that circulates a first refrigerant;
- secondary-side cycles of a vapor compression type that each circulate a respective second refrigerant;
- and
- cascade heat exchangers that each exchange heat between the first refrigerant and the respective second refrigerant, wherein
- each of the secondary-side cycles comprises a secondary-side heat exchanger comprising a flat multi-hole pipe and disposed indoor and that uses cold or heat obtained by the respective second refrigerant from a corresponding one of the cascade heat exchangers,
- each of the cascade heat exchangers is a plate heat exchanger,
- each of the cascade heat exchangers comprises:
- a first refrigerant passage that allows the first refrigerant to pass;
- and
- a second refrigerant passage that allows the respective second refrigerant to pass, and
- for each of the secondary-side cycles, a first volume V1 of the secondary-side heat exchanger and a second volume V2 of the second refrigerant passage satisfies 0.80≤V1/V2≤1.20.
Dependencies are inferred from the claim text.