AIR-CONDITIONING APPARATUS

Provided is an air-conditioning apparatus, including: a refrigeration cycle (30); an injection circuit (40) for connecting between an injection port (1 a) and a branching portion (31) arranged between an indoor expansion valve (10) and a main circuit expansion valve (22); an injection circuit expans...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	KORENAGA, KAZUNORI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING WEAPONS
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Beschreibung
Zusammenfassung:	Provided is an air-conditioning apparatus, including: a refrigeration cycle (30); an injection circuit (40) for connecting between an injection port (1 a) and a branching portion (31) arranged between an indoor expansion valve (10) and a main circuit expansion valve (22); an injection circuit expansion valve (21) arranged in the injection circuit (40); an internal heat exchanger (20) for exchanging heat between refrigerant flowing between the branching portion (31) and the main circuit expansion valve (22) and refrigerant depressurized by the injection circuit expansion valve (21); and an outdoor unit control device (18), the outdoor unit control device (18) being configured to control an opening degree A of the main circuit expansion valve (22) so as to satisfy Relation A+C=BxGr, where A represents the opening degree of the main circuit expansion valve (22), C represents an opening degree of the injection circuit expansion valve (21), B represents a coefficient, and Gr represents a refrigerant circulating amount in the refrigeration cycle (30).