AIR CONDITIONER - DAIKIN IND LTD

Title:

AIR CONDITIONER

Document Type and Number:

WIPO Patent Application WO/2019/087630

Kind Code:

A1

Abstract:

An air conditioner includes a compressor, the operation frequency of which is variable, and a controller for executing compressor protection control to raise the operation frequency of the compressor to a required operation frequency at the start of the cooling or heating operation. The compressor protection control includes a first protection control and a second protection control. In the first protection control, the operation frequency of the compressor is controlled such that the time period from the activation of the compressor to the time at which the operation frequency reaches the required operation frequency should become relatively long. In the second protection control, the operation frequency of the compressor is controlled such that the time period from the activation of the compressor to the time at which the operation frequency reaches the required operation frequency should be relatively short. The control unit executes the second protection control when the predetermined condition is satisfied at the time of executing the compressor protection control.

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Inventors:

ITOU HIROSHI (JP)
NAKATA TAKAHIRO (JP)
OKA SEIJI (JP)
ASHIZAWA TOMOHARU (JP)

Application Number:

PCT/JP2018/036016

Publication Date:

May 09, 2019

Filing Date:

September 27, 2018

Export Citation:

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Assignee:

DAIKIN IND LTD (JP)

International Classes:

F25B1/00; F24F11/86

Domestic Patent References:

WO2015140871A1

2015-09-24

Foreign References:

JPH04268164A	1992-09-24
JPS63150258U	1988-10-03
US20110113797A1	2011-05-19
JPH01305267A	1989-12-08
JPH07310959A	1995-11-28
JPH09119693A	1997-05-06
JP2012149834A	2012-08-09
JPH06101925A	1994-04-12
JPH06341720A	1994-12-13

Other References: