Title:
HYBRID AIR CONDITIONING SYSTEM AND A METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO1998002695
Kind Code:
A3
Abstract:
A system for conditioning the air within an enclosure which houses heat producing equipment. The system includes a passive heat removal system (12), for precooling the air, and a thermoelectric temperature control system (14) used in conjunction with the passive heat removal system (12) to achieve additional cooling, temperature control and heating. The passive heat removal system (12) includes a heat pipe system. A power control system (30) includes a programmable control means (56) which receives signals, from a temperature sensor (36), which are indicative of the temperature of the air in the enclosure (20). Based upon these signals, the power control system (30) controls the activation of thermoelectric devices in the thermoelectric temperature control system (14) and controls the activation of fans (38, 42) to remove a desired amount of heat from the air in the enclosure (20) and discharge the unwanted heat to the outside air. A switching device (58) operates to apply battery power (60) to the power control system (30) if the electrical power source for the thermoelectric temperature control system (14) fails. A polarity reversal circuit (50) reverses the DC polarity of the DC voltage applied to the thermoelectric devices to reverse the heat pumping of the thermoelectric devices in the situation where the air in the enclosure (20) needs to be heated. Circuitry and sensors are provided to monitor the speed of the fans to detect any failure of a fan. A current control circuit supplies power to and temperature control of thermoelectric cooling devices. 00000
Inventors:
RAJASUBRAMANIAN SATHYA
DEVILBISS ROGER S
DEDMON THOMAS C
QUISENBERRY TONY M
BORMAN RON
BOGER ALLEN D JR
DEVILBISS ROGER S
DEDMON THOMAS C
QUISENBERRY TONY M
BORMAN RON
BOGER ALLEN D JR
Application Number:
PCT/US1997/012103
Publication Date:
March 12, 1998
Filing Date:
July 11, 1997
Export Citation:
Assignee:
THERMOTEK INC (US)
International Classes:
F24F5/00; F28D15/02; (IPC1-7): F24F5/00
Foreign References:
| GB2260191A | 1993-04-07 | |||
| DE3730830A1 | 1989-03-23 | |||
| US4631728A | 1986-12-23 | |||
| US5371665A | 1994-12-06 | |||
| EP0478204A2 | 1992-04-01 | |||
| US4709323A | 1987-11-24 | |||
| US4347474A | 1982-08-31 | |||
| US5450727A | 1995-09-19 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 096, no. 009 30 September 1996 (1996-09-30)
PATENT ABSTRACTS OF JAPAN vol. 006, no. 240 (M - 174) 27 November 1982 (1982-11-27)
PATENT ABSTRACTS OF JAPAN vol. 095, no. 007 31 August 1995 (1995-08-31)
PATENT ABSTRACTS OF JAPAN vol. 006, no. 240 (M - 174) 27 November 1982 (1982-11-27)
PATENT ABSTRACTS OF JAPAN vol. 095, no. 007 31 August 1995 (1995-08-31)
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