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US 2001/0043808 A1Published application
Heating apparatus for vehicle cabin
OwnerKen Matsunaga, Hisashi Iedainventors
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Abstract
A temperature sensor detecting a temperature of fluid flowing through a fluid passage is disposed at a bent portion located at an upper side of the fluid passage in an area close to a fluid outlet. Particularly, the temperature sensor is disposed at a position far from the fluid inlet by half or more of an entire length L of the fluid passage. Thus, it is possible to prevent the detected temperature of the temperature sensor from being remarkably different from an actual temperature and to prevent the electric heater from being thermally damaged.
Claims13
A heating apparatus, comprising:
- a fluid passage having bent portions at plural positions, said fluid passage defining a fluid inlet and a fluid outlet, said fluid passage extending from said fluid inlet to said fluid outlet while meandering;
- an electric heater provided within said fluid passage and generating heat due to an electric current;
- temperature detecting means for detecting a temperature of fluid flowing through said fluid passage;
- and
- control means for controlling an operation of said electric heater based on a detecting value of said temperature detecting means, wherein
- said temperature detecting means is disposed at said bent portions located at an upper side of said fluid passage in an area close to said fluid outlet.
3 more elements
A heating apparatus, comprising:
- a casing made of resin, said casing forming a fluid passage therein;
- a heater disposed in said fluid passage and heating a fluid flowing through said fluid passage;
- and
- a fixing block made of metal, said fixing block fixed to said casing and supporting said heater.
1 more element
Dependencies are inferred from the claim text.