Refrigerating apparatus for use in vehicles, using an engine as power source
First Claim
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1. A refrigerating apparatus for use in vehicles that use an engine as power source, said apparatus comprising:
- a refrigerating cycle having a compressor, a condenser and an evaporator, in which refrigerant discharged from the compressor is circulated through the condenser and the evaporator;
a generator which is driven by the engine;
a storage battery unit which is recharged with an output of the generator;
an inverter for converting electric power supplied from the generator and the storage battery unit, to power for driving the compressor; and
a controller which has first control means for supplying the output of the generator to the inverter, second control means for supplying power from the storage battery unit to the inverter, third control means for supplying the output of the generator to the inverter and supplying power from the storage battery unit to the inverter when no power is thereafter available from the generator, and fourth control means for selectively controlling these control means.
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Abstract
The engine drives the generator, which generates electric power. The power drives the compressor. Thus driven, the compressor cools the interior of the refrigerating chamber. When the engine stops, the output of the generator stops is no longer available. Then, the compressor is automatically driven by the power of the storage battery unit.
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Citations
20 Claims
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1. A refrigerating apparatus for use in vehicles that use an engine as power source, said apparatus comprising:
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a refrigerating cycle having a compressor, a condenser and an evaporator, in which refrigerant discharged from the compressor is circulated through the condenser and the evaporator;
a generator which is driven by the engine;
a storage battery unit which is recharged with an output of the generator;
an inverter for converting electric power supplied from the generator and the storage battery unit, to power for driving the compressor; and
a controller which has first control means for supplying the output of the generator to the inverter, second control means for supplying power from the storage battery unit to the inverter, third control means for supplying the output of the generator to the inverter and supplying power from the storage battery unit to the inverter when no power is thereafter available from the generator, and fourth control means for selectively controlling these control means. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A refrigerating apparatus for use in vehicles that use an engine as power source, said apparatus comprising:
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a refrigerating cycle having a compressor, a condenser and an evaporator, in which refrigerant discharged from the compressor is circulated through the condenser and the evaporator;
a generator which is driven by the engine;
a storage battery unit which is recharged with an output of the generator;
a connection terminal that can be connected to a commercial power supply;
an inverter for converting electric power supplied from the generator, the storage battery unit and the connection terminal, to power for driving the compressor; and
a controller which has eleventh control means for supplying the output of the generator to the inverter, twelfth control means for supplying power from the storage battery unit to the inverter, thirteenth control means for supplying the power from the connection terminal to the inverter, fourteenth control means for supplying the output of the generator to the inverter and supplying power from the storage battery unit to the inverter when no power is thereafter available from the generator, fifteenth control means for supplying the power from the connection terminal to the inverter and supplying power from the storage battery unit to the inverter when power is no longer supplied to the connection terminal, and sixteenth control means for selectively controlling these control means. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A refrigerating apparatus for use in vehicles that has an engine and refrigerating chamber, designed to cool the interior of the refrigerating chamber, said apparatus comprising:
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a refrigerating cycle having a compressor, a condenser and an evaporator, in which refrigerant discharged from the compressor is circulated through the condenser and the evaporator;
an intra-chamber temperature sensor provided in the refrigerating chamber and configured to detect a temperature in the refrigerating chamber;
a generator which is driven by the engine;
a connection terminal that can be connected to a commercial power supply;
a rectifying circuit for rectifying an output of the generator and power supplied to the connection terminal;
a storage battery unit which is recharged with the output of the generator;
a switching circuit for converting an output of the rectifying circuit and power of the storage battery unit to power for driving the compressor;
a first switch provided in a current path between the generator and the rectifying circuit;
a second switch provided in a current path between the connection terminal and the rectifying circuit;
a third switch provided in a current path between the storage battery unit and the switching circuit;
a first operation switch which start and stop the engine;
a second operation switch which supplies the power of the storage battery unit to drive the compressor;
a power supply for the controller, which outputs power necessary for driving the controller; and
a controller having detecting means for detecting whether the generator outputs power and whether power is supplied to the connection terminal, twenty-first control means for controlling the switches in accordance with the fact detected by the detecting means and the operation of the second operation switch thereby to selectively perform a generator-driving mode operation of driving the compressor with the output of the generator, a commercial power mode operation of driving the compressor with power of the commercial power supply, an idling-stop mode operation of driving the compressor with the power of the storage battery unit and an automatic mode operation of changing the operating mode to the idling-stop mode after the generator-driving mode operation and the commercial power mode operation are terminated;
a twenty-second control means for controlling the switching circuit and an output frequency of the switching circuit in accordance with the temperature detected by the intra-chamber temperature sensor; and
a twenty-third control means for forming a power-supplying path extending from the power supply to the controller, when the first operation switch or the second operation switch is turned on, and for maintaining the power-supplying path until a preset time elapses after each mode operation is terminated. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification