Automotive air-conditioning apparatus with combustion heater

Heating systems – Heat and power plants – Vehicle

Patent

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Details

237 123C, B60H 102

Patent

active

057526559

ABSTRACT:
To prevent a thermal medium from assuming a superheated state and to stably supply hot air for warming in an apparatus which performs warming by a combustion heater. A hot-water recirculation path connecting a hot-water heater core, water pump, cooler for a motor for running use and an inverter device, first switching valve, and combustion heater in a closed loop is provided. A temperature sensor is disposed at an intermediate location in the hot-water recirculation path. A heat-radiating passage having a second switching valve and radiator is connected to the hot-water recirculation path. During heating operation, an ECU closes the second switching valve and switches off a radiator fan when a detected temperature of the first temperature sensor is less than a set temperature for radiating heat, and opens the second switching valve and switches off the radiator fan when the detected temperature of the first temperature sensor is the set temperature for radiating heat or more.

REFERENCES:
patent: 2476295 (1949-07-01), Hans
patent: 4300720 (1981-11-01), Baier et al.
patent: 4883226 (1989-11-01), Tomita et al.

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