ヒートポンプ装置 - National Institute for Agricultural and Food Industry Research Organization

Title:

ヒートポンプ装置

Document Type and Number:

Japanese Patent JP7359361

Kind Code:

B2

Abstract:

To provide an open loop type and direct expansion type heat pump device having low cost and furthermore having improved heat exchange efficiency compared to a closed loop type heat pump device.SOLUTION: The heat pump device is provided that includes a freezing cycle in which a compressor 110 compressing refrigerant, a four-way valve 120, an outdoor heat exchanger 130, an expansion valve 140 and an indoor heat exchanger 210 are connected via a refrigerant pipe 2, 3. By switching the four-way valve 120, the outdoor heat exchanger 130 functions as a condenser and the indoor heat exchanger 210 functions as an evaporator during cooling operation, and the indoor heat exchanger 210 functions as a condenser and the outdoor heat exchanger 130 functions as an evaporator during heating operation. The heat pump device further includes a water reservoir 160 in which water such as groundwater can be stored, the outdoor heat exchanger 130 is immersed into the water reservoir and thus functions as a direct expansion type water-refrigerant heat exchanger.SELECTED DRAWING: Figure 1

Inventors:

Masahisa Ishii
Satomi Okushima
Hideki Moriyama
Ryota Tsuchiya
Shinji Takasugi

Application Number:

JP2018183856A

Publication Date:

October 11, 2023

Filing Date:

September 28, 2018

Export Citation:

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Assignee:

National Institute for Agricultural and Food Industry Research Organization
Geosystem Co., Ltd.

International Classes:

F25B39/00; F25B1/00; F25B13/00; F25B30/06; F28F13/12; F28F19/04

Domestic Patent References:

JP2016133232A
JP2008164237A
JP2013024457A

Foreign References:

WO2013172166A1
WO2014054310A1

Attorney, Agent or Firm:

Takuya Ohhara

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