IP Library Granted Patent US 7,363,766
Granted Patent B2
US 7,363,766 · App. 11/268,533 · Granted Apr 29, 2008

Vehicle air conditioning system

Assignee: Nissan Technical Center North America, Inc.
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Quick Facts
Patent No.
US 7,363,766
App. No.
11/268,533
Granted
Apr 29, 2008
Kind
B2
Abstract

A vehicle air conditioning system includes a compressor, a condenser, an evaporator and a thermoelectric device. The compressor is configured to receive a refrigerant and compress the refrigerant to a compressed state. The condenser is in fluid communication with the compressor to receive the refrigerant in the compressed state via a high pressure tube. The evaporator is in fluid communication between the condenser and the compressor to receive the refrigerant from the condenser and convey the refrigerant to the compressor via a low pressure tube. The thermoelectric device is operatively arranged relative to at least a portion of the high pressure tube to remove heat from the high pressure tube.

Claims (38)

1. A vehicle air conditioning system comprising:

a compressor configured to receive a refrigerant and compress the refrigerant to a compressed state;

a condenser in fluid communication with the compressor to receive the refrigerant in the compressed state via a high pressure tube;

an evaporator in fluid communication between the condenser and the compressor to receive the refrigerant from the condenser and convey the refrigerant to the compressor via a low pressure tube; and

a thermoelectric device operatively arranged relative to at least a portion of the high pressure tube to remove heat from the high pressure tube, the thermoelectric device contacting at least a portion of the low pressure tube to dissipate heat from the thermoelectric device to the portion of the low pressure tube.

2. The vehicle air conditioning system as set forth in claim 1 , further comprising

a controller operatively connected to the thermoelectric device to turn the thermoelectric device on and off in response to a predetermined operating condition of the vehicle air conditioning system.

3. A vehicle air conditioning system comprising:

a compressor configured to receive a refrigerant and compress the refrigerant to a compressed state;

a condenser in fluid communication with the compressor to receive the refrigerant in the compressed state via a high pressure tube;

an evaporator in fluid communication between the condenser and the compressor to receive the refrigerant from the condenser and convey the refrigerant to the compressor via a low pressure tube;

a thermoelectric device operatively arranged relative to at least a portion of the high pressure tube to remove heat from the high pressure tube; and

a controller operatively connected to the thermoelectric device to turn the thermoelectric device on and off in response to a predetermined operating condition of the vehicle air conditioning system, the controller being operatively connected to a temperature sensor that is configured and arranged to sense temperature of the evaporator as the predetermined operating condition.

4. The vehicle air conditioning system as set forth in claim 3 , wherein

the controller is configured to turn the thermoelectric device on in response to detection by the temperature sensor of the evaporator operating above a threshold temperature.

5. The vehicle air conditioning system as set forth in claim 3 , wherein

the controller is operatively connected to a temperature sensor that is configured and arranged to detect ambient temperature outside a vehicle equipped with the vehicle air conditioning system as the predetermined operating condition.

6. The vehicle air conditioning system as set forth in claim 5 , wherein

the controller is configured to turn the thermoelectric device on in response to detection by the temperature sensor of the ambient temperature exceeding a threshold temperature when the vehicle air conditioning system is operating.

7. The vehicle air conditioning system as set forth in claim 3 , wherein

the controller is operatively connected to a temperature sensor that is configured and arranged to detect temperature of the thermoelectric device, and

the controller configured to turn the thermoelectric device off in response to detection by the temperature sensor of the thermoelectric device exceeding a threshold temperature when the vehicle air conditioning system is operating.

8. The vehicle air conditioning system as set forth in claim 7 , wherein

the controller is operatively connected to a temperature sensor that is configured and arranged to sense temperature of the evaporator as the predetermined operating condition.

9. The vehicle air conditioning system as set forth in claim 8 , wherein

the controller is configured to turn the thermoelectric device on in response to detection by the temperature sensor of the evaporator operating above a threshold temperature.

10. The vehicle air conditioning system as set forth in claim 7 , wherein

the controller is operatively connected to a temperature sensor that is configured and arranged to detect ambient temperature outside a vehicle equipped with the vehicle air conditioning system as the predetermined operating condition.

11. The vehicle air conditioning system as set forth in claim 10 , wherein

the controller is configured to turn the thermoelectric device on in response to detection by the temperature sensor of the ambient temperature exceeding a threshold temperature when the vehicle air conditioning system is operating.

12. The vehicle air conditioning system as set forth in claim 3 , wherein

the thermoelectric device contacts at least a portion of the low pressure tube to dissipate heat from the thermoelectric device to the portion of the low pressure tube.

13. The vehicle air conditioning system as set forth in claim 3 , wherein

the thermoelectric device contacts at least a portion of a vehicle body member to dissipate heat from the thermoelectric device to the vehicle body member.

14. The vehicle air conditioning system as set forth in claim 3 , wherein

the thermoelectric device has a heat sink that is arranged formed by to dissipate heat from the thermoelectric device to the heat sink.

15. The vehicle air conditioning system as set forth in claim 14 , wherein

the heat sink has a heat dissipation member that includes cooling fins.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 2, 2008
From: NISSAN TECHNICAL CENTER NORTH AMERICA, INC.
To: NISSAN MOTOR CO., LTD.
Reel/Frame 021901/0937 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 8, 2005
From: EISENHOUR, RONALD S.
To: NISSAN TECHNICAL CENTER NORTH AMERICA, INC.
Reel/Frame 017208/0950 →
Continuity (1)
Related Publication 20070101747A1 · May 10, 2007