Air conditioner for vehicle
First Claim
1. An air conditioner for a vehicle, comprising:
- a pump configured to take in and discharge a heat medium;
a heat medium/air heat exchanger that regulates a temperature of ventilation air blown into a vehicle interior by conducting sensible-heat exchange between the ventilation air and the heat medium circulated by the pump;
a heat transfer device having a passage through which the heat medium flows and configured to conduct heat transfer with the heat medium circulated by the pump;
a compressor disposed to take in and discharge a refrigerant in a refrigeration cycle;
a heat medium/refrigerant heat exchanger configured to perform heat exchange between the heat medium circulated by the pump and the refrigerant in the refrigeration cycle to regulate a temperature of the heat medium circulated by the pump; and
a controller configured to control a heat transfer amount with the heat medium in the heat transfer device or heat exchange capability of the heat medium/air heat exchanger such that a temperature of the ventilation air regulated by the heat medium/air heat exchanger approaches a first target temperature, whereinthe heat medium/refrigerant heat exchanger is disposed to heat the heat medium by performing heat exchange between the refrigerant discharged by the compressor and the heat medium,the heat medium/air heat exchanger is disposed to heat the ventilation air by conducting sensible-heat exchange between the heat medium heated in the heat medium/refrigerant heat exchanger and the ventilation air, andthe controller is configured toregulate a flow rate of the heat medium in at least one of the heat medium/air heat exchanger and the heat transfer device, andregulate one of a flow rate of the refrigerant or the flow rate of the heat mediums such that the temperature of the ventilation air approaches the first target temperature, and regulate the other one of the flow rate of the refrigerant or the flow rate of the heat medium such that a temperature of the heat transfer device approaches a second target temperature,when the first target temperature is higher than the second target temperature, the controller regulates the flow rate of the refrigerant such that the temperature of the ventilation air heated in the heat medium/air heat exchanger approaches the first target temperature, and the controller regulates the flow rate of the heat medium such that the temperature of the heat transfer device approaches the second target temperature, andwhen the second target temperature is higher than the first target temperature, the controller regulates the flow rate of the refrigerant such that the temperature of the heat transfer device approaches the second target temperature, and the controller regulates the flow rate of the heat medium such that the temperature of the ventilation air heated in the heat medium/air heat exchanger approaches the first target temperature.
1 Assignment
0 Petitions
Accused Products
Abstract
An air conditioner for a vehicle including a pump that takes in and discharges a heat medium, a heat medium/air heat exchanger which regulates a temperature of ventilation air by conducting sensible-heat exchange between the ventilation air and the heat medium circulated by the pump, a heat transfer device having a passage through which the heat medium flows and conducts heat transfer with the heat medium, a compressor, a heat medium/refrigerant heat exchanger which regulates the temperature of the heat medium, and a controller which regulates a heat transfer amount with the heat medium in the heat transfer device or heat exchange capability of the heat medium/air heat exchanger such that a temperature of the ventilation air regulated by the heat medium/air heat exchanger approaches a target temperature.
29 Citations
21 Claims
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1. An air conditioner for a vehicle, comprising:
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a pump configured to take in and discharge a heat medium; a heat medium/air heat exchanger that regulates a temperature of ventilation air blown into a vehicle interior by conducting sensible-heat exchange between the ventilation air and the heat medium circulated by the pump; a heat transfer device having a passage through which the heat medium flows and configured to conduct heat transfer with the heat medium circulated by the pump; a compressor disposed to take in and discharge a refrigerant in a refrigeration cycle; a heat medium/refrigerant heat exchanger configured to perform heat exchange between the heat medium circulated by the pump and the refrigerant in the refrigeration cycle to regulate a temperature of the heat medium circulated by the pump; and a controller configured to control a heat transfer amount with the heat medium in the heat transfer device or heat exchange capability of the heat medium/air heat exchanger such that a temperature of the ventilation air regulated by the heat medium/air heat exchanger approaches a first target temperature, wherein the heat medium/refrigerant heat exchanger is disposed to heat the heat medium by performing heat exchange between the refrigerant discharged by the compressor and the heat medium, the heat medium/air heat exchanger is disposed to heat the ventilation air by conducting sensible-heat exchange between the heat medium heated in the heat medium/refrigerant heat exchanger and the ventilation air, and the controller is configured to regulate a flow rate of the heat medium in at least one of the heat medium/air heat exchanger and the heat transfer device, and regulate one of a flow rate of the refrigerant or the flow rate of the heat mediums such that the temperature of the ventilation air approaches the first target temperature, and regulate the other one of the flow rate of the refrigerant or the flow rate of the heat medium such that a temperature of the heat transfer device approaches a second target temperature, when the first target temperature is higher than the second target temperature, the controller regulates the flow rate of the refrigerant such that the temperature of the ventilation air heated in the heat medium/air heat exchanger approaches the first target temperature, and the controller regulates the flow rate of the heat medium such that the temperature of the heat transfer device approaches the second target temperature, and when the second target temperature is higher than the first target temperature, the controller regulates the flow rate of the refrigerant such that the temperature of the heat transfer device approaches the second target temperature, and the controller regulates the flow rate of the heat medium such that the temperature of the ventilation air heated in the heat medium/air heat exchanger approaches the first target temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An air conditioner for a vehicle, comprising:
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a pump configured to take in and discharge a heat medium; a heat medium/air heat exchanger that regulates a temperature of ventilation air blown into a vehicle interior by conducting sensible-heat exchange between the ventilation air and the heat medium circulated by the pump; a heat transfer device having a passage through which the heat medium flows and configured to conduct heat transfer with the heat medium circulated by the pump; a compressor disposed to take in and discharge a refrigerant in a refrigeration cycle; a heat medium/refrigerant heat exchanger configured to perform heat exchange between the heat medium circulated by the pump and the refrigerant in the refrigeration cycle to regulate a temperature of the heat medium circulated by the pump; and a controller configured to control a heat transfer amount with the heat medium in the heat transfer device or heat exchange capability of the heat medium/air heat exchanger such that a temperature of the ventilation air regulated by the heat medium/air heat exchanger approaches a first target temperature, wherein the heat medium/refrigerant heat exchanger is disposed to cool the heat medium by performing heat exchange between the refrigerant decompressed and expanded in a decompression device and the heat medium, the heat medium/air heat exchanger is disposed to cool the ventilation air by conducting sensible-heat exchange between the heat medium cooled in the heat medium/refrigerant heat exchanger and the ventilation air, and the controller is configured to regulate a flow rate of the heat medium in at least one of the heat medium/air heat exchanger and the heat transfer device, and regulate one of a flow rate of the refrigerant or the flow rate of the heat medium such that the temperature of the ventilation air approaches the first target temperature, and regulate the other one of the flow rate of the refrigerant or the flow rate of the heat medium such that a temperature of the heat transfer device approaches a second target temperature, when the first target temperature is lower than the second target temperature, the controller regulates the flow rate of the refrigerant such that the temperature of the ventilation air cooled in the heat medium/air heat exchanger approaches the first target temperature, and the controller regulates the flow rate of the heat medium such that the temperature of the heat transfer device approaches the second target temperature, and when the second target temperature is lower than the first target temperature, the controller regulates the flow rate of the refrigerant such that the temperature of the heat transfer device approaches the second target temperature, and the controller regulates the flow rate of the heat medium such that the temperature of the ventilation air cooled in the heat medium/air heat exchanger approaches the first target temperature.
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12. An air conditioner for a vehicle, comprising:
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a pump configured to take in and dis charge a heat medium; a heat medium/air heat exchanger that regulates a temperature of ventilation air blown into a vehicle interior by conducting sensible-heat exchange between the ventilation air and the heat medium circulated by the pump; a heat transfer device having a passage through which the heat medium flows and configured to conduct heat transfer with the heat medium circulated by the pump; a compressor disposed to take in and discharge a refrigerant in a refrigeration cycle; a heat medium/refrigerant heat exchanger configured to perform heat exchange between the heat medium circulated by the pump and the refrigerant in the refrigeration cycle to regulate a temperature of the heat medium circulated by the pump; and a controller configured to control a heat transfer amount with the heat medium in the heat transfer device or heat exchange capability of the heat medium/air heat exchanger such that a temperature of the ventilation air regulated by the heat medium/air heat exchanger approaches a first target temperature, wherein the heat medium/refrigerant heat exchanger is disposed to cool or heat the heat medium by conducting heat exchange between the heat medium circulated by the pump and the refrigerant, and the controller is configured to regulate a flow rate of the heat medium in at least one of the heat medium/air heat exchanger and the heat transfer device, and regulate one of a flow rate of the refrigerant or the flow rate of the heat medium such that the temperature of the ventilation air approaches the first target temperature, and regulate the other one of the flow rate of the refrigerant or the flow rate of the heat medium such that a temperature of the heat transfer device approaches a second target temperature, and further comprising; a first control mode in which the controller regulates the flow rate of the refrigerant such that the temperature of the ventilation air approaches the first target temperature, and the controller regulates the flow rate of the heat medium such that the temperature of the heat transfer device approaches the second target temperature, and a second control mode in which the controller regulates the flow rate of the refrigerant such that the temperature of the heat transfer device approaches the second target temperature, and the controller regulates the flow rate of the heat medium such that the temperature of the ventilation air approaches the first target temperature, wherein the controller switches between the first and second control modes based on weather the first deviation is positive or negative and the second deviation is positive or negative, (i) when the first deviation denotes a difference that the first target temperature is subtracted from the temperature of the ventilation air in a case where the ventilation air is being cooled in the heat medium/air, heat exchanger, or a difference that the temperature of the ventilation air is subtracted from the first target temperature in a case where the ventilation air is being heated in the heat medium/air heat exchanger; and (ii) when the second deviation denotes a difference that the second target temperature is subtracted from the temperature of the heat transfer device in a case where the heat medium is receiving heat in the heat transfer device, or a difference that the temperature of the heat transfer device is subtracted from the second target temperature in a case where the heat medium is releasing heat in the heat transfer device. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. An air conditioner for a vehicle, comprising:
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a pump configured to take in and discharge a heat medium; a heat medium/air heat exchanger that regulates a temperature of ventilation air blown into a vehicle interior by conducting sensible-heat exchange between the ventilation air and the heat medium circulated by the pump; a heat transfer device having a passage through which the heat medium flows and configured to conduct heat transfer with the heat medium circulated by the pump; a compressor disposed to take in and discharge a refrigerant in a refrigeration cycle; a heat medium/refrigerant heat exchanger configured to perform heat exchange between the heat medium circulated by the pump and the refrigerant in the refrigeration cycle to regulate a temperature of the heat medium circulated by the pump; and a controller configured to control a heat transfer amount with the heat medium in the heat transfer device or heat exchange capability of the heat medium/air heat exchanger such that a temperature of the ventilation air regulated by the heat medium/air heat exchanger approaches a first target temperature, wherein the heat medium/refrigerant heat exchanger is disposed to cool or heat the heat medium by conducting heat exchange between the heat medium circulated by the pump and the refrigerant, and the controller is configured to regulate a flow rate of the heat medium in at least one of the heat medium/air heat exchanger and the heat transfer device, and regulate one of a flow rate of the refrigerant or the flow rate of the heat medium such that the temperature of the ventilation air approaches the first target temperature, and regulate the other one of the flow rate of the refrigerant or the flow rate of the heat medium such that a temperature of the heat transfer device approaches a second target temperature, in a case where an amount of heat exchange or a heat exchange demand between the heat medium and the ventilation air in the heat medium/air heat exchanger is higher than the heat transfer amount or a heat transfer demand with the heat medium in the heat transfer device, the controller regulates the flow rate of the refrigerant such that the temperature of the ventilation air approaches the first target temperature, and the controller regulates the flow rate of the heat medium such that the temperature of the heat transfer device approaches the second target temperature, and in a case where the heat transfer amount or the heat transfer demand with the heat medium in the heat transfer device is higher or presumed to be higher than the amount of heat exchange or the heat exchange demand between the heat medium and the ventilation air in the heat medium/air heat exchanger, the controller regulates the flow rate of the refrigerant such that the temperature of the heat transfer device approaches the second target temperature, and the controller regulates the flow rate of the heat medium such that the temperature of the ventilation air approaches the first target temperature.
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Specification