Semi-Electric Mobile Refrigerated System
First Claim
1. A mobile refrigerated system for transport of perishable cargo, the mobile refrigerated system comprising:
- a refrigeration unit having a compressor and a plurality of refrigeration unit electric loads; and
a power supply system including an engine coupled to the compressor for direct drive powering the compressor, and a generator arranged to be driven by the engine for generating electric power.
1 Assignment
0 Petitions
Accused Products
Abstract
A power supply system for a transport refrigeration system (20) includes an engine (26) coupled to a compressor (32) of a refrigeration unit for direct drive powering the compressor (32) and a generator (24) arranged to also be direct driven by the engine (26) for generating electric power. The generator (24) and the compressor (32) are mounted to a common drive shaft (25) driven by the engine (26), and the generator (24) may be integrated with the compressor (32). The power supply system may further include an alternator (50) arranged to be belt driven by the engine (26) for generating DC electric power. A battery pack (28) may be provided for storing and supplying additional DC power. During peak load demand on the refrigeration unit (20), the engine (26) may be operated with the generator (24) switched off to directly drive the compressor (32) and direct current may be drawn from the battery pack (28) to drive the condenser/gas cooler and evaporator fans (40, 44).
31 Citations
20 Claims
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1. A mobile refrigerated system for transport of perishable cargo, the mobile refrigerated system comprising:
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a refrigeration unit having a compressor and a plurality of refrigeration unit electric loads; and a power supply system including an engine coupled to the compressor for direct drive powering the compressor, and a generator arranged to be driven by the engine for generating electric power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for operating a transport refrigeration system having a refrigeration unit having a compressor, a condenser fan and an evaporator fan, the method comprising the steps of:
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providing an engine and coupling the engine to the compressor for directly driving the compressor; providing a generator and coupling the generator to the engine for driving the generator for generating alternating current power; providing alternating current motors for driving the condenser fan and the evaporator fan; and powering the alternating current motors with alternating current generated by the generator. - View Dependent Claims (14, 15)
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16. A method for operating a transport refrigeration system having a refrigeration unit having a compressor, a condenser fan and an evaporator fan, the method comprising the steps of:
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providing an engine and coupling the engine to the compressor for driving the compressor; providing a generator and coupling the generator to the engine for directly driving the generator for generating alternating current power; providing a high voltage battery pack for storing and supplying direct current power; providing direct current motors for driving the condenser fan and the evaporator fan; during a temperature pull down mode, operating the engine to drive the compressor, switching off the generator and powering the direct current motors with direct current supplied by the high voltage battery pack. - View Dependent Claims (17, 18, 19, 20)
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Specification