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Transport refrigeration system

  • US 5,046,326 A
  • Filed: 10/24/1990
  • Issued: 09/10/1991
  • Est. Priority Date: 10/24/1990
  • Status: Expired due to Fees
First Claim
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1. A transport refrigeration system having an evaporator, an evaporator blower, a condenser, a condenser blower, and a refrigerant compressor driven by an internal combustion engine, with the internal combustion engine having an output shaft, a pressurized oil lubrication system and a crankcase having an oil sump, the improvement comprising:

  • a variable speed drive for the evaporator blower which includes an input shaft, a fluid coupling, a first output shaft, and a second output shaft concentric with the first output shaft,said input shaft being connected to the output shaft of the internal combustion engine,said fluid coupling including an impeller connected to said input shaft, a turbine connected to said first output shaft, a housing surrounding said impeller and turbine, an oil inlet on said housing, and an oil outlet on said housing,said first coupling being connected to receive oil from the oil lubrication system of the internal combustion engine via said oil inlet, and to return oil to the oil sump via said oil outlet,said first output shaft being connected to the evaporator blower,and said second output shaft being connected to the condenser blower.

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