Heater, in particular vehicle auxiliary heater, with a temperatu

Details Heater, in particular vehicle auxiliary heater, with a temperatu Heater, in particular vehicle auxiliary heater, with a temperatu

1989-02-22

1990-07-31

Bennett, Henry A.

Heating systems

Heat and power plants

Vehicle

237 2A, B60H 102

Patent

active

049444549

ABSTRACT:
A water type heater, in particular a vehicle auxiliary heater having a temperature safety mechanism, intended to prevent overheating damage to temperature-sensitive parts of the heater, that utilizes a contact sensor that is in heat conducting connection with the heat exchanger. As a heat conducting connection, a direct physical contact between the heat exchanger and a water jacket casing of the heater can be utilized that is, preferably, achieved with the aid of a projection, and optionally, a diametrically opposite projection acting as countersupport. In a modified embodiment, an elastic body that conducts heat well can be placed in a compressed state between the jacket casing and the heat exchanger. The contact sensor then lies against the outer surface of the casing as the temperature safety mechanism. The elastic body that conducts heat well is suitably made in the form of a disk made of a graphite material. In other embodiments, the contact sensor can be spring-mounted or at least a head part thereof can be elastically deformable. In this way, the contact sensor can extend into direct engagement with the heat exchanger without being adversely affected by thermal expansion effects experienced by the heat exchanger and jacket casing during operation of the heater.

REFERENCES:
patent: 2192389 (1940-03-01), Trca

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