Method for controlling an air conditioning system
First Claim
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1. An air conditioning method, comprising:
- when a refrigerant circuit is in operation, a refrigerant circuit compressor is on, and a temperature of an evaporator of the refrigerant circuit is lower than a temperature of a heat exchanger of a heating circuit, transferring heat from the heat exchanger to air passing from the evaporator through the heat exchanger;
when the refrigerant circuit is not in operation, the refrigerant circuit compressor is off, and the temperature of the evaporator is higher than the temperature of the heat exchanger, transferring heat from the air passing from the evaporator through the heat exchanger to the heat exchanger; and
when the refrigerant circuit is not in operation and when a desired temperature of a passenger cabin is above a current temperature of the passenger cabin, transferring heat from the heat exchanger to air passing from the evaporator through the heat exchanger.
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Abstract
An air conditioning method is provided. The method comprises when a refrigerant circuit is in operation and a temperature of an evaporator of the refrigerant circuit is lower than a temperature of a heat exchanger of a heating circuit, transferring heat from the heat exchanger to air passing through the heat exchanger, and when the refrigerant circuit is not in operation and the temperature of the evaporator is higher than the temperature of the heat exchanger, transferring heat from the air passing through the heat exchanger to the heat exchanger. In this way, the heat exchanger functions to augment the cooling capabilities of the evaporator.
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Citations
20 Claims
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1. An air conditioning method, comprising:
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when a refrigerant circuit is in operation, a refrigerant circuit compressor is on, and a temperature of an evaporator of the refrigerant circuit is lower than a temperature of a heat exchanger of a heating circuit, transferring heat from the heat exchanger to air passing from the evaporator through the heat exchanger; when the refrigerant circuit is not in operation, the refrigerant circuit compressor is off, and the temperature of the evaporator is higher than the temperature of the heat exchanger, transferring heat from the air passing from the evaporator through the heat exchanger to the heat exchanger; and when the refrigerant circuit is not in operation and when a desired temperature of a passenger cabin is above a current temperature of the passenger cabin, transferring heat from the heat exchanger to air passing from the evaporator through the heat exchanger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An engine air conditioning system, comprising:
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a refrigerant circuit including at least one evaporator; a heating circuit including at least one heat exchanger; a coolant circuit connected in a fluid-conducting manner to the heating circuit; and a controller configured to; when the engine is operating and a temperature of the evaporator is lower than a temperature of the heat exchanger, transfer heat from the heat exchanger to air passing from the evaporator through the heat exchanger; when the engine is not operating and the temperature of the evaporator is higher than the temperature of the heat exchanger, transfer heat from the air passing from the evaporator through the heat exchanger to the heat exchanger; and when the engine is not operating and a desired temperature of a passenger cabin is above a current temperature of the passenger cabin, transferring heat from the heat exchanger to air passing from the evaporator through the heat exchanger. - View Dependent Claims (11, 12, 13)
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14. A vehicle method, comprising:
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under a first condition, routing coolant from a fluid accumulator to a heat exchanger and directing airflow through an evaporator to the heat exchanger and to a passenger cabin of the vehicle to transfer heat from the heat exchanger to the air; and under a second condition, routing coolant from the fluid accumulator to the heat exchanger while separating the coolant from a coolant circuit of an engine of the vehicle, and directing airflow through the evaporator to and the heat exchanger and to the passenger cabin to transfer heat from the air to the heat exchanger. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification