The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 2002
Filed:
Aug. 21, 2001
Yutaka Yamashita, Shizuoka, JP;
Suzuki Motor Corporation, Shizuoka, JP;
Abstract
The present invention aims at providing an air conditioner used in an electric vehicle which can exert a sufficient cooling performance without enlarging the size of a motor for driving a compressor or supplying an excessive amount of driving current to the motor. The air conditioner of the invention is provided with a condenser fan for cooling a condenser and a motor for driving the condenser fan. A driving current Ap of a motor for driving a compressor is detected and compared with respect to reference currents A and A to select a driving current Vd (low voltage), Vd (moderate voltage) or Vd (high voltage) for controlling the rotation speed of the condenser motor. Since the increase in the load put on the compressor 2 caused by an increase in the temperature of the gas inside the condenser 4 can be suppressed by the cooling effect of the condenser 4 owing to the rotation of the condenser fan, a rotation speed of the compressor necessary to achieve the predetermined temperature can be obtained without providing a high driving current to the motor.