Steuerungsvorrichtung, Kühlmittelkreislaufsystem, Steuerungsverfahren und Programm

Details

Veröffentlichungs-Nr.

EP3306231

Aktenzeichen

EP17194422

Anmeldetag

2. Oktober 2017

Veröffentlichung

27. März 2019

Erteilung

27. März 2019

Rechtsraum

EP

IPC

F25B31/00F25B49/02// F25B13/00

Abstract

A control device (20) which performs control for returning an appropriate amount of refrigerator oil to a compressor (1) according to an operation state is provided. The control device (20) in a refrigerant circuit (10) which includes a compressor (1) configured to compress a refrigerant, an oil separator (9) configured to separate refrigerator oil contained in the refrigerant discharged from the compressor (1) from the refrigerant, an oil return pipe (8c) configured to return the separated refrigerator oil to the compressor (1), and a flow rate control valve (11) provided in the oil return pipe includes a valve opening degree control part (24) configured to control a valve opening degree of the flow rate control valve (11) on the basis of a target return flow rate of the refrigerator oil that needs to be returned to the compressor (1) and a pressure difference (”P) between a discharge side pressure (HP) and a suction side pressure (LP) of the compressor (1).

Anmelder

Firma

MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.

Land

🇯🇵 Japan

Fachgebiete