Apparatus for controlling in-vehicle heater

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United States of America Patent

PATENT NO 9821635
SERIAL NO

14351823

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In order to perform overheating protection of a controller for water-heating heaters 3A and 3B for in-vehicle heating, an energization circuit for a heater 3 (3A, 3B) includes IGBTs 11 and 12 as switching devices that are disposed therein to be in series with the heater 3, and a first temperature sensor (first thermistor) 21 which measures temperature of these IGBTs 11, 12. A comparator 25 is provided to transmit a signal when the temperature of the IGBTs 11, 12 is equal to or greater than a predetermined temperature. Then, the IGBTs 11, 12 can be forcibly turned OFF via the IGBT driver 13 in response to a signal from the comparator 25 without a microprocessor 14 intervening therebetween.

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Patent Owner(s)

Patent OwnerAddress
SANDEN HOLDINGS CORPORATION20 KOTOBUKI-CHO ISESAKI-SHI GUNMA 372-8502

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arai, Jyouji Isesaki, JP 1 3
Fujita, Mamoru Wako, JP 51 484
Inoue, Naoki Wako, JP 139 1239
Kaneko, Shunsuke Isesaki, JP 4 9
Mizuno, Soichi Wako, JP 1 3
Ushigome, Kazuyasu Isesaki, JP 7 34

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