Drying and gas or vapor contact with solids – Apparatus – For hair on head
Patent
1988-05-13
1991-02-26
Bennet, Henry A.
Drying and gas or vapor contact with solids
Apparatus
For hair on head
431344, 431 75, 432222, A45D 200, A45D 206
Patent
active
049951718
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a combustion type dryer which ignites a liquefied gas as a fuel and combusts it to forcibly blow out, by a fan, heated air generated within the dryer.
BACKGROUND ART
A gas combustion type dryer of this type is constructed of a handle and a blowing barrel, the former accommodating a liquefied gas tank, a fan battery, a switch and an ignition device made of a piezoelectric unit, and the latter being of a double wall structure and having therein a combustion housing coupled to the liquefied gas tank. A jet nozzle for a liquefied gas and an ignition electrode are mounted within the combustion housing. Heated air within the combustion housing generated by combusting the liquefied gas therein is blown out of the blowing barrel by a fan mounted behind the combustion housing.
Since a dryer of this type does not require a cord as in the case of an electric dryer, it is advantageous over an electric dryer in that it can be used at any place as desired, even outdoors. However, if a fan is stopped simultaneously with stopping combustion after using the dryer, the blowing barrel is still exposed to remaining heat of the combustion housing so that it becomes necessary to continue fan cooling even after the stop of combustion, otherwise carelessly touching the blowing barrel may cause a burn. This problem can be solved to some extent if the blowing barrel is constructed of double wall structure. It is not desirable, however, in terms of handling it because of an increase of its weight.
Further, a dryer of this type utilizes combustion heat of a liquefied gas so that the gas must be supplied to the combustion area while always maintaining its pressure constant. Combustion under unstable pressure may often lead to excessive combustion or incomplete combustion, so that it becomes impossible to use it due to unstable temperature of blown air or becomes dangerous to use it.
DISCLOSURE OF INVENTION
It is an object of the present invention to provide a gas combustion type dryer which has very small remaining heat after the stop of combustion so that even if a fan is stopped simultaneously with stopping combustion, a blowing barrel is not heated by the remaining heat.
It is another object of the present invention to provide a gas combustion type dryer provided with a pressure regulator by which a liquefied gas in a liquefied gas tank can be supplied to a combustor while controlling the gas pressure always constant.
It is a further object of the present invention to provide a gas combustion type dryer with the combustor and a temperature controller mounted within the blowing barrel, wherein a gaseous liquefied gas and an air are mixed within the combustor and the mixed gas is ignited by piezoelectrically generated spark to combust it within the combustor, and wherein the temperature controller controls the combustion temperature within the combustor at a predetermined temperature or less.
According to a gas combustion type dryer achieving the above objects of the present invention, the dryer is constructed of a dryer main body and a handle mounted below the main body, the main body having a blowing barrel and a suction barrel integrally and laterally formed with respect to the former. The combustor and the temperature controller are housed within the blowing barrel, while a fan, a fan motor and a re-chargeable battery are housed within the suction barrel.
A piezoelectric unit for ignition of the liquefied gas and a liquefied gas tank coupled to a pressure regulator are housed within the handle. The pressure regulator and the combustor are coupled to each other by a flexible tube via the temperature controller.
The combustor is constructed of a laterally extending hollow tube with a jet nozzle at the back thereof and a combustion nozzle at the front thereof, a tubular heater net mounted on the hollow tube at its front outer periphery, and a block cover closing the front end of the heater net. A discharge electrode of the piezoelectric unit is mounted extending to the side of
REFERENCES:
patent: 4555232 (1985-11-01), Raccah et al.
patent: 4635382 (1987-01-01), Bourdeau
patent: 4800654 (1989-01-01), Levin et al.
Mashine Hiroyoshi
Yoshinaga Sadao
Bennet Henry A.
Gromada Denise L. F.
Prince Industrial Development Co., Ltd.
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