Title:
ヒートポンプ熱源機
Document Type and Number:
Japanese Patent JP6969223
Kind Code:
B2
Abstract:
To provide a heat pump heat source machine capable of suppressing reduction of energy efficiency by avoiding an intermittent operation of a compressor under a low load during a heating operation.SOLUTION: A heat pump heat source device comprises: a coolant circuit connecting a compressor, a condensation heat exchanger, expansion means and an evaporation heat exchanger; a bypass passage provided in the coolant circuit so as to bypass the condensation heat exchanger and the expansion means; an on-off valve capable of opening/closing the bypass passage; and an air blower which blows air to the evaporation heat exchanger. A coolant which is heated to a predetermined heating temperature is heat-exchanged with hot water for heating a heating medium which is supplied to a heating terminal, by the condensation heat exchanger. Therefore, a rotation speed of the compressor and an aperture of the expansion means are controlled in such a manner that a temperature of the hot water is settled within a predetermined target temperature range. In a case where the temperature of the hot water becomes higher than the target temperature range while the compressor is being actuated at a preset lower limit rotation speed, the on-off valve can be opened.SELECTED DRAWING: Figure 2
Inventors:
Akihito Eda
Application Number:
JP2017161146A
Publication Date:
November 24, 2021
Filing Date:
August 24, 2017
Export Citation:
Assignee:
Noritsu Co., Ltd.
International Classes:
F24H4/02; F24D3/18; F25B1/00; F25B30/02; F25B39/04
Domestic Patent References:
| JP2014228214A | ||||
| JP61291868A |
Attorney, Agent or Firm:
Toshio Okamura