冷凍サイクル装置

Japanese Patent JP6380265

B2

A refrigeration cycle device includes a first refrigeration cycle circuit (1), a second refrigeration cycle circuit (2), a hot water circuit (5) that cools a heat source (3), a first water-refrigerant heat exchanger (13) that performs a heat exchange between a refrigerant in the first refrigeration cycle circuit and a coolant in the hot water circuit, and a second water-refrigerant heat exchanger (14) that performs a heat exchange between a refrigerant in the second refrigeration cycle circuit and the coolant in the hot water circuit. The first refrigeration cycle circuit and the second refrigeration cycle circuit are controlled so that one of those refrigeration cycle circuits performs defrosting operation while the other refrigeration cycle circuit performs heating operation. With the above configuration, the first and second refrigeration cycle circuits do not perform the defrosting operation at the same time. When it is determined that the first refrigeration cycle circuit performs the defrosting operation and the first refrigeration cycle circuit can absorb the heat from a hot water, the control device (6) allows the hot water of the hot water circuit (5) to flow in the first water-refrigerant heat exchanger (13) and to exchange heat with the refrigerant. A heat absorbed by one refrigeration cycle circuit can be leveraged for the defrosting operation of the other refrigeration cycle circuit through the hot water circuit, and the defrosting efficiency can be improved, and the defrosting time can be reduced.

Akira Fujita
Masami Taniguchi
Ryo Takizawa
Kurata Takehiro

JP2015133794A

August 29, 2018

July 02, 2015

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株式会社デンソー

B60H1/22; B60H1/08; F25B1/00; F25B6/04; F25B13/00; F25B47/02; F25B49/02

JP2014088060A
JP2005090784A

Kazuyuki Yahagi
Taihei Nonobe
Takanori Kubo

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