Title:
CONTROL METHOD OF HEAT PUMP
Document Type and Number:
Japanese Patent JP2018048777
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To surely reduce a variation in a rotational speed of an engine accompanied by a reduced-cylinder operation or an increased-cylinder operation of a multi-cylinder engine for a heat pump.SOLUTION: A heat pump 100 includes: at least one compressor 211 or 213 driven by a multi-cylinder engine which can perform reduced-cylinder control being control for reducing the number of operation cylinders, and/or increased-cylinder control being control for increasing the number of the operation cylinders; and a heat exchanger 250. In the heat pump 100, the number of the operation cylinders is reduced after performing load alleviation control being control for lowering a power factor of the compressor in the reduced-cylinder control, and the number of the operation cylinders is increased after performing the load alleviation control in the increased-cylinder control. When the heat pump includes a hot gas bypass valve 290, the load alleviation control can be performed by releasing the hot gas bypass valve. When the compressor includes a capacity solenoid valve 291 or 293, the load alleviation control can be performed by opening the capacity solenoid valve.SELECTED DRAWING: Figure 1
Inventors:
OGASAWARA RETSU
Application Number:
JP2016185002A
Publication Date:
March 29, 2018
Filing Date:
September 23, 2016
Export Citation:
Assignee:
AISIN SEIKI
International Classes:
F25B27/00; F02D17/02; F02D41/02; F25B1/00
Attorney, Agent or Firm:
Patent business corporation Prospec patent office