Electrically powered transport refrigeration unit

A transport refrigeration unit of the type configured to be mounted on the front wall of a transport trailer, the transport trailer being adapted to be connected to and towed by a motorized tractor, the connected trailer and tractor defining therebetween a predetermined envelope bounded by the tractor swing radius and the trailer front wall, said refrigeration unit comprising:

• a structural support framework configured to be attached to the front wall of the transport trailer;
• an outer cover configured to be supported by said framework and to be within said predetermined envelope;
• and
• the following component, all supported by said framework, and contained within said outer cover:
• a compressor having a discharge port and a suction port and further having an electric compressor drive motor hermetically disposed therein for running the compressor;
• a condenser heat exchanger unit operatively coupled to said compressor discharge port;
• an evaporator heat exchanger unit operatively coupled to said compressor suction port;
• at least one fan assembly having at least one electric fan motor configured to provide air flow over one of said heat exchanger units;
• and
• an integrally mounted unitary engine driven generator assembly configured to selectively produce at least one A.C. voltage at one or more frequencies;
• wherein said at least one compressor drive motor and said at least one fan motor are configured to be directly coupled to said generator and to operate at a voltage and frequency produced by said generator.

A transport refrigeration unit of the type configured to be mounted on the front wall of a transport trailer, the transport trailer being adapted to be connected to and towed by a motorized tractor, the connected trailer and tractor defining therebetween a predetermined envelope bounded by the tractor swing radius and the trailer front wall, said refrigeration unit comprising:

• a structural support framework configured to be attached to the front wall of the transport trailer;
• an outer cover configured to be supported by said framework and to be within said predetermined envelope;
• and
• the following component, all supported by said framework, and contained within said outer cover:
• a compressor having a discharge port and a suction and further having an electric compressor drive motor hermetically disposed therein for running the compressor;
• a condenser heat exchanger unit operatively coupled to said compressor discharge port;
• an evaporator heat exchanger unit operatively coupled to the compressor suction port;
• a condenser fan assembly including at least one electric fan motor configured to provide air flow over said condenser heat exchanger;
• an evaporator fan assembly including at least one electric fan motor configured to provide air flow over said evaporator heat exchanger unit;
• auxiliary electrical components associated with operation and control of said transport refrigeration system;
• and
• an integrally mounted unitary engine driven synchronous generator assembly configured to selectively produce at least one A.C. voltage at one or more frequencies;
• wherein said compressor motor, said condenser fan motor, said evaporator fan motor, and said auxiliary electrical devices are configured to be directly coupled to said generator and to operate at a voltage and a frequency produced by said synchronous generator.

A transport refrigeration unit of the type configured to be mounted on the front wall of a transport trailer, which is adapted to be connected to and towed by a motorized tractor, the trailer and tractor combination being of the type referred to as a “European 33 Pallet Trailer Refrigeration Unit”, the connected trailer and tractor defining a predetermined envelope bounded by the tractor swing radius and the 33 Pallet trailer front wall, said refrigeration unit comprising:

• a structural support framework configured to be attached to the front wall of the transport trailer;
• an outer cover configured to be supported by said framework and to be within said predetermined envelope;
• and
• the following component, all supported by said framework, and contained within said outer cover:
• a compressor having a discharge port and a suction port and further having an electric compressor drive motor hermetically disposed therein for running the compressor;
• a condenser heat exchanger unit operatively coupled to said compressor discharge port;
• an evaporator heat exchanger unit operatively coupled to said compressor suction port;
• at least one fan assembly having at least one electric fan motor configured to provide air flow over one of said heat exchanger units;
• and
• an integrally mounted unitary engine driven synchronous generator assembly configured to selectively produce at least one A.C. voltage at one or more frequencies;
• wherein said at least one compressor drive motor and said at least one fan motor are configured to be directly coupled to said generator and to operate at a voltage and frequency produced by said synchronous generator.