Back to results
US 6,523,361 B2Granted
Air conditioning systems
AssigneeSanden Corporation
InventorAkiyoshi Higashiyama
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeSanden Corporation
InventorAkiyoshi Higashiyama
Estimating the term…
An air conditioning system includes a refrigerant circuit. The refrigerant circuit includes a compressor for receiving a refrigerant gas and for compressing the refrigerant gas, and a condenser for condensing a portion of the compressed refrigerant gas into a liquid refrigerant. The refrigerant circuit also includes an expansion valve for reducing a pressure of the condensed liquid refrigerant, and an evaporator for evaporating the condensed liquid refrigerant. Moreover, the compressor is driven by an electric motor which controls a rotational speed of the compressor via an inverter, and a temperature of the inverter is decreased by the refrigerant circuit. The system also includes an electric circuit for determining whether a temperature of the inverter is greater than a first predetermined temperature, and an electric circuit for controlling a rotational speed of the compressor. Specifically, when the temperature of the inverter is greater than the first predetermined temperature, the electric circuit decreases the rotational speed of the compressor.
An air conditioning system comprising:
An air conditioning system comprising:
A method of employing an air conditioning system comprising a compressor for receiving a refrigerant gas and for compressing said refrigerant gas, a condenser for condensing at least a portion of said compressed refrigerant gas into a liquid refrigerant, an expansion valve for reducing a pressure of said condensed liquid refrigerant, and an evaporator for evaporating said condensed liquid refrigerant, wherein said compressor is driven by an electric motor and said electric motor controls a rotational speed of said compressor by an inverter, comprising the steps of:
Dependencies are inferred from the claim text.