Method and apparatus for regulating the operating temperature of electronic devices

• US 6,957,544 B2
• Filed: 07/18/2003
• Issued: 10/25/2005
• Est. Priority Date: 07/18/2003
• Status: Expired due to Fees

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Barsun, Stephan K., Barr, Andrew H., Dobbs, Robert W.
• Primary Examiner(s): Jiang, Chen Wen
• Application Number:
  US10/622,917
• Publication Number:
  US 20050011208A1
• Time in Patent Office: 830 Days
• Field of Search: 621/78, 621/77, 622/592, 624/04, 165/80.3, 361/696, 361/694
• US Class Current: 62/178
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/56 Remote control
• CPC Class Codes: F24F 11/76 by means responsive to temperature, e.g. bimetal springs
• CPC Class Codes: F24F 2110/10 Temperature
• CPC Class Codes: F24F 2221/40 HVAC with raised floors
• CPC Class Codes: H05K 7/20745 within rooms for removing heat from cabinets, e.g. by air conditioning device
• CPC Class Codes: H05K 7/20836 Thermal management, e.g. server temperature control

Abstract

In one embodiment, the present invention recites a temperature control subsystem for use with an air conditioning system. The temperature control subsystem comprises a temperature sensor located in proximity to a heat-generating device disposed within a housing, where the temperature sensor generates data corresponding to the temperature of the heat-generating device. The temperature control subsystem further comprises an air-flow control feature coupled to the housing, whereby the air-flow control feature is configured to regulate the delivery of cooling air to the housing. Cooling air is provided by the air conditioning system. A local control subsystem is coupled to the air-flow control feature to control the air flow of cooling air to the housing so that the air flow is adjustable to correspond to the temperature data received from the temperature sensor.

Claims

1. A system for controlling the temperature of an electronic device comprising:

a duct for conveying heated air away from an electrical device disposed within a housing, said duct preventing the heated air from mixing with the ambient air of a room in which said housing is disposed;

a temperature sensor disposed within said duct for generating data substantially corresponding to the temperature of the heated air;

a second temperature sensor disposed in said room for generating data substantially corresponding to the temperature of said room;

an air-flow control feature disposed within said housing for regulating the amount of the heated air being conveyed away from said electrical device; and

a local control subsystem coupled with said air-flow control feature and with said temperature sensors for controlling said air-flow control feature based upon the data received from said temperature sensors, wherein the amount of the heated air conveyed away from said electrical device is adjusted in response to a control signal generated by said local control subsystem.

2. The system of claim 1, wherein said duct is coupled with said housing.

3. The system of claim 1, wherein said duct conveys the heated air directly to an air conditioning system.

4. The system of claim 1, wherein said local control subsystem determines a value corresponding to the difference between the data generated by said temperature sensor and said second sensor.

5. The system of claim 4, wherein said control signal is generated in response to said value.

6. The system of claim 1, wherein said data and said control signal are conveyed to said local control subsystem via a wired link.

7. The system of claim 1, wherein said data and said control signal are conveyed to said local control subsystem via a wireless link.

8. A method for controlling the temperature of an electrical device comprising:

coupling a duct for conveying heated air with a housing of an electrical device;

generating data substantially corresponding to the temperature of heated air being conveyed from said housing using a temperature sensor disposed within said duct;

generating data substantially corresponding to the temperature of a room in which said housing is disposed using a second temperature sensor;

generating a control signal to an air-flow control feature disposed within said duct in response to receiving the data; and

regulating the flow of the heated air out of said housing using said air-flow control feature.

9. The method as recited in claim 8, wherein said generating said control signal comprises comparing the data from said temperature sensor with the data from said second temperature sensor.

10. The method as recited in claim 8 further comprising:

conveying the heated air out of said room to an air conditioning system.

11. The method as recited in claim 10, wherein said heated air does not mix with the ambient air of said room.

12. The method as recited in claim 8 further comprising:

communicatively coupling said temperature sensor and said air-flow control feature with a local control subsystem for generating said control signal.

13. The method as recited in claim 12, wherein said temperature sensor and said air-flow control feature are communicatively coupled with said local control subsystem using a wired link.

14. The method as recited in claim 12, wherein said temperature sensor and said air-flow control feature are communicatively coupled with said local control subsystem using a wireless link.