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1. (WO2014199788) AIR-CONDITIONING DEVICE

Pub. No.:    WO/2014/199788    International Application No.:    PCT/JP2014/063289
Publication Date: Fri Dec 19 00:59:59 CET 2014 International Filing Date: Wed May 21 01:59:59 CEST 2014
IPC: F25B 1/00
F24F 11/02
Applicants: DAIKIN INDUSTRIES, LTD.
ダイキン工業株式会社
Inventors: HOSHIKA, Keitarou
星加 啓太郎
MAKINO, Tatsuya
牧野 達也
SHIMODA, Junichi
下田 順一
Title: AIR-CONDITIONING DEVICE
Abstract:
An air-conditioning device (1) wherein the operating capacity of a compressor (21) and/or the operating capacity of an outdoor fan (36) is changed, after which the change in the amount of refrigerant circulation passing through an upstream expansion valve (24, 26) and a downstream expansion valve (26, 24) is predicted, with the prediction condition being based on the correlation relationship between a high-pressure-side pressure difference (obtained by subtracting an intermediate pressure from a high pressure) and a low-pressure-side pressure difference (obtained by subtracting a low pressure from the intermediate pressure), and the predicted change in the amount of refrigerant circulation is taken into account to perform a control for changing the degree of opening of the upstream expansion valve (24, 26) and the downstream expansion valve (26, 24).