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US 2009/0173094 A1Published application
Air conditioner
AssigneeSanden Corporation
InventorYukihiko Taguchi
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AssigneeSanden Corporation
InventorYukihiko Taguchi
Estimating the term…
[Object of the Invention] An object of the present invention is to provide an air conditioner whose operation mode is switchable between cooling mode and heating mode using highly pressurized hot gas in refrigerant cycle, wherein both a cooling mode operation for variably controlling the displacement of the variable displacement compressor, thereby controlling car interior cooling temperature to a predetermined level, and a heating mode operation for variably controlling the displacement of the variable displacement compressor, thereby controlling car interior heating temperature to a predetermined level, can be implemented. [Disclosure of the Invention] An air conditioner comprises a variable displacement compressor and a controller 400. The variable displacement compressor comprises a control valve provided with a valve body, a pressure sensitive mechanism 300A for sensing the lower pressure side pressure of a refrigerating cycle acting to force the valve body and a solenoid 300B for forcing the valve body based on an input electric current, position of the control valve is controlled to vary internal pressure of a control chamber, thereby variably controlling the displacement of the variable displacement compressor. The controller 400 controls the input electric current to the solenoid 300B to control the position of the control valve. Operation of the air conditioner is switchable between cooling mode and heating mode using highly pressurized hot gas in the refrigerant cycle. During the cooling mode operation, the controller 400 controls the input electric current to the solenoid 300B to operate the control valve based on the lower pressure side pressure of the refrigerant acting on the pressure sensitive mechanism 300A and the quantity of the input electric current to the solenoid 300B, and during the heating mode operation it controls the input electric current to the solenoid 300B to operate the control valve based not on the lower pressure side pressure of the refrigerant cycle acting on the pressure sensitive mechanism 300A but only on the quantity of the input electric current to the solenoid 300B.
An air conditioner comprising a variable displacement compressor and a controller, wherein the variable displacement compressor comprises a control valve provided with a valve body, a pressure sensitive mechanism for sensing the lower pressure side pressure of a refrigerating cycle acting to force the valve body and a solenoid for forcing the valve body based on an input electric current, position of the control valve is controlled to vary internal pressure of a control chamber, thereby variably controlling the displacement of the variable displacement compressor, and the controller controls the input electric current to the solenoid to control the position of the control valve, and wherein operation of the air conditioner is switchable between cooling mode and heating mode using highly pressurized hot gas in the refrigerant cycle, and wherein during the cooling mode operation the controller controls the input electric current to the solenoid to operate the control valve based on the lower pressure side pressure of the refrigerant cycle acting on the pressure sensitive mechanism and the quantity of the input electric current to the solenoid, and during the heating mode operation controls the input electric current to the solenoid to operate the control valve based not on the lower pressure side pressure of the refrigerant cycle acting on the pressure sensitive mechanism but only on the quantity of the input electric current to the solenoid.
Dependencies are inferred from the claim text.