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US 7,024,875 B2Granted
Air conditioning apparatus using variable displacement compressor
AssigneeSanden Corporation
InventorYoshihiro Ochiai
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AssigneeSanden Corporation
InventorYoshihiro Ochiai
Estimating the term…
In an air conditioner provided with a refrigerant circulation circuit having a variable displacement compressor (11), there is provided a flow rate sensor (21) for detecting a collision force of a refrigerant flowing in the refrigerant circulation circuit to produce a collision force detection value. A discharge capacity of the variable displacement compressor is controlled referring to the collision force detection value. It may also be possible to control a discharge capacity such that a valve portion serving to introduce a discharged refrigerant into a crank chamber is applied with a collision force of the refrigerant and an electromagnetic force in opposite directions and, when the collision force is greater than the electromagnetic force, the valve portion is opened to cause the collision force to approach the electromagnetic force.
An air conditioner provided with a refrigerant circulation circuit including a variable capacity compressor, said air conditioner characterized by comprising collision force detecting means for detecting a collision force of a refrigerant flowing in said refrigerant circulation circuit to produce a collision force detection value, and discharge capacity control means for controlling a discharge capacity of said variable capacity compressor by referring to said collision force detection value.
An air conditioner provided with a refrigerant circulation circuit including a variable capacity compressor, said air conditioner characterized by comprising a collision plate subjected to collision with a refrigerant flowing in said refrigerant circulation circuit, and a valve portion adapted to introduce discharged gas into a crank chamber, said valve portion provided to a rod through which an electromagnetic force is exerted to said collision plate, wherein when a force exerted to said collision plate by the collision with the refrigerant is greater than said electromagnetic force, said valve portion is opened to control a discharge capacity of said variable capacity compressor such that the force exerted to said collision plate approaches said electromagnetic force.
Dependencies are inferred from the claim text.