Title:
AIR CONDITIONER
Document Type and Number:
Japanese Patent JP2018128158
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To shorten time for a room temperature to reach the vicinity of a heating preset temperature when returning to a heating operation after defrosting, in an air conditioner including an inverter compressor.SOLUTION: An inverter compressor 11 is constituted so as to change a refrigerant circulation amount of a refrigerant circuit 10 by changing an operation frequency by inverter control, and compresses the refrigerant flowing toward an indoor heat exchanger 16 which is a radiator. An expansion valve 14 changes resistance when decompressing the refrigerant flowing toward the indoor heat exchanger 16 by adjusting an expansion valve opening. The inverter compressor 11 is operated at an operation frequency determined based on a difference between a room temperature and a heating preset temperature, when returning to a heating operation after defrosting of an outdoor heat exchanger 13 which is an evaporator. In the expansion valve 14, when returning to the heating operation after defrosting of the outdoor heat exchanger 13, the expansion valve opening is adjusted to a heating return time opening which is acquired by adding a correction value changed according to a difference between the room temperature and the heating preset temperature to an opening before defrosting before defrosting.SELECTED DRAWING: Figure 1
Inventors:
NAKATA TAKAHIRO
ASHIZAWA TOMOHARU
ASHIZAWA TOMOHARU
Application Number:
JP2017019545A
Publication Date:
August 16, 2018
Filing Date:
February 06, 2017
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
F24F11/86; F24F11/84; F25B1/00; F25B13/00
Domestic Patent References:
| JPS6071838A | 1985-04-23 | |||
| JPH0921556A | 1997-01-21 | |||
| JP2009299986A | 2009-12-24 | |||
| JPH06123474A | 1994-05-06 | |||
| JP2015059708A | 2015-03-30 |
Attorney, Agent or Firm:
Shinki Global IP Patent Corporation