AIR CONDITIONER

PURPOSE:To assure a necessary and sufficient capability of a cooling side indoor device and a heating side indoor device even if an outdoor device is placed at a location higher than the indoor devices by a method wherein a pressure of refrigerant passing through a liquid pipe and another pressure o...

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Bibliographic Details
Main Author CHUMA YOSHIHIRO
Format Patent
LanguageEnglish
Published 17.03.1992
Edition5
Subjects
AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING
BLASTING
COMBINED HEATING AND REFRIGERATION SYSTEMS
HEAT PUMP SYSTEMS
HEATING
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
MANUFACTURE OR STORAGE OF ICE
MECHANICAL ENGINEERING
RANGES
REFRIGERATION MACHINES, PLANTS OR SYSTEMS
REFRIGERATION OR COOLING
VENTILATING
WEAPONS
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Summary:PURPOSE:To assure a necessary and sufficient capability of a cooling side indoor device and a heating side indoor device even if an outdoor device is placed at a location higher than the indoor devices by a method wherein a pressure of refrigerant passing through a liquid pipe and another pressure of refrigerant passing through a high pressure gas pipe are detected and an amount of refrigerant passing through the liquid is controlled in such a way as a difference of detected pressures is set within a specified range. CONSTITUTION:An outdoor device A is placed at a location higher than those of indoor devices C1 to C4. A required amount of refrigerant flows in the cooling side indoor devices C1 and C2. Refrigerant hardly flows in the heating side indoor device C3. Due to this fact, PMV 16 is set to a predetermined degree of opening. When a heating degree of refrigerant becomes a stable state, a pressure of refrigerant passing through a liquid pipe W is detected by a pressure sensor 61, a pressure of refrigerant passing through a high pressure gas pipe G is detected by a pressure sensor 62 and then a difference DELTAP of both detected pressures is detected. PMV 16 is decreased by a specified amount until the pressure difference DELTAP is converted to a substantial zero value within a predetermined value. A refrigerant pressure within a liquid pipe W is adjusted to a substantial same value as that of the refrigerant in a high pressure gas pipe G, and then the capabilities of the cooling indoor devices C1, C2 and the heating indoor device C3 can be assured.
Bibliography:Application Number: JP19900197867