Title:
HOT-WATER SUPPLY DEVICE, AND DUAL HOT-WATER GENERATION UNIT
Document Type and Number:
WIPO Patent Application WO/2018/186043
Kind Code:
A1
Abstract:
To suppress destabilization of the degree of intake superheating of a hot-water supply compressor when, in an operation for simultaneously supplying hot water and heating, the amount of heat in an air-conditioning refrigerant supplied to a cascade heat exchanger increases and decreases in accompaniment with increases and decreases in the number of devices performing a heating operation in an indoor unit. A hot-water supply device (700) connected to an air conditioner (600), wherein: the hot-water supply device (700) comprises a hot-water generation unit (300) and a heat transfer unit (400) that is connected to the air conditioner (600); the hot-water generation unit (300) comprises, in a circular configuration, a compressor (310), a hot-water supply heat exchanger (320) for performing heat exchange between a hot-water supply refrigerant and a hot-water supply heat transfer medium, a flow rate control device (330) for controlling the flow rate of the hot-water supply refrigerant, and a cascade heat exchanger (340) for performing heat exchange between the hot-water supply refrigerant and an air-conditioning refrigerant; and the hot-water generation unit (300) furthermore comprises an internal heat exchanger (370) that uses a CO2 refrigerant as a hot-water supply refrigerant and is capable of performing heat exchange between high-pressure refrigerant at the outlet of the hot-water supply heat exchanger (320) and low-pressure refrigerant at the outlet of the cascade heat exchanger (340).
Inventors:
IITAKA SEISHI
SHIGETA AKIHIRO
SHIGETA AKIHIRO
Application Number:
PCT/JP2018/006505
Publication Date:
October 11, 2018
Filing Date:
February 22, 2018
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
F25B29/00; F24H4/02; F25B1/00; F25B7/00
Domestic Patent References:
| WO2016189813A1 | 2016-12-01 | |||
| WO2014203514A1 | 2014-12-24 | |||
| WO2013161011A1 | 2013-10-31 | |||
| WO2011048695A1 | 2011-04-28 |
Foreign References:
| JP2010121844A | 2010-06-03 | |||
| JP2007271211A | 2007-10-18 | |||
| JP2013088038A | 2013-05-13 |
Attorney, Agent or Firm:
KUSHIBUCHI & ASSOCIATES (JP)
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