GEOTHERMAL HEAT PUMP DEVICE - MITSUBISHI ELECTRIC CORP

Title:

GEOTHERMAL HEAT PUMP DEVICE

Document Type and Number:

WIPO Patent Application WO/2018/163347

Kind Code:

A1

Abstract:

A geothermal heat pump device comprises a heat pump heat source unit that has a refrigerant circuit in which there are sequentially connected a compressor, a water-refrigerant heat exchanger, an expansion valve, and a refrigerant-brine heat exchanger to which a heat medium from an underground heat exchanger embedded in the ground is connected in a circulating manner; a hot water heating unit for circulating and supplying hot water that has been heated by the water-refrigerant heat exchanger for space heating or hot water supply; and a control device for controlling the upper limit value of the operating frequency of the compressor on the basis of the limit value of the collected heat that is set based on a comparison of the inlet/outlet temperature of the heating medium circulating to the refrigerant brine heat exchanger and the unitary actual evaporation performance calculated from the circulation flow amount.

Inventors:

AOYAGI YOSHIRO (JP)
SUZUKI KAZUTAKA (JP)
MATSUZAWA KOJI (JP)

Application Number:

PCT/JP2017/009420

Publication Date:

September 13, 2018

Filing Date:

March 09, 2017

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

F25B1/00; F25B27/00

Domestic Patent References:

WO2014156895A1

2014-10-02

Foreign References:

JP2003130494A	2003-05-08
JP2006292310A	2006-10-26
JP2012233669A	2012-11-29
US20110146317A1	2011-06-23
JP2006292310A	2006-10-26
JP2012233669A	2012-11-29

Other References: