Electric resistance heating devices – Heating devices – Vaporizer
Patent
1989-10-06
1991-08-06
Walberg, Teresa J.
Electric resistance heating devices
Heating devices
Vaporizer
392406, 392392, F24F 608
Patent
active
050383949
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to devices for thermal vaporization, and more particularly to thermal vaporizers of the so-called cordless type for use as directly attached to electric outlets provided on interior vertical surfaces as of walls, pillars, etc.
BACKGROUND ART
Thermal vaporizers, such as electric mosquito controlling devices, include those of the mat type wherein a mat impregnated with an insecticidal solution is used as placed on a heat plate, and those of the liquid type wherein a chemical solution is heated for vaporization while being drawn up through a wick from a bottle. Those of the mat type include cordless devices already proposed, while cordless devices of the liquid type have yet to be proposed. The electric mosquito controlling device of the liquid type is relatively heavy in its entirety since the overall weight of the device includes the weight of the device body and that of the solution bottle. If cordless, the entire device must be supported against gravity solely by a plug attached to the electric outlet. It is therefore likely that the plug will slip off the outlet when the device is heavy. This defect has been a serious obstacle to overcome in designing cordless liquid-type devices. For example, the conventional electric mosquito controlling device of the liquid type with a cord comprises a box-shaped body and is used with a solution bottle accommodated in the body. The device body of the conventional structure must have a height at least sufficient for the body to accommodate the solution bottle and the wick projecting upward from the bottle, and is consequently large-sized, heavy and unsuited for use as a cordless device. The device is further inconvenient in that the bottom portion of the device body needs to be removed when the solution bottle is to be accommodated in the body.
DISCLOSURE OF THE INVENTION
The main object of the present invention is to provide a cordless thermal vaporizer of the liquid type which is usable as attached to an electric outlet reliably with stability.
Another object of the invention is to provide a cordless thermal vaporizer of the liquid type wherein a chemical solution bottle can be attached to the body of the device easily.
Still another object of the invention is to provide a thermally vaporizable chemical solution which is usable for a prolonged period of time for thermal vaporization and can therefore be used as contained in a small bottle.
Other features of the present invention will become apparent from the following description.
The present invention provides a cordless thermal vaporizer for use with a plug inserted in an electric outlet, the vaporizer being characterized in that the body of the vaporizer is internally provided with a heater for heating a wick for drawing up a chemical solution from a bottle, and a socket disposed under the heater and removably fittable in the form of a cap to the bottle for attachment thereto.
The thermal vaporizer of the present invention is so constructed that the body thereof can be fittingly attached, at its socket in the form of a cap, to the chemical solution bottle. Accordingly, the body is smaller in size, especially in the dimension along the direction of its height, and in weight than the box-shaped conventional one. The reduced weight lessens the burden on the plug blades inserted in the outlet during use, almost completely eliminating the tendency for the plug to slip off the outlet and making the vaporizer usable as attached to the outlet reliably with stability.
Since the solution bottle can be attached directly to the socket of the vaporizer body, the bottle is easy to fit in and remove.
According to the present invention, the plug is provided on the rear side of the vaporizer body. Electric outlets are divided into two types: the vertical type for use with (two or three) plug blades as arranged vertically, and the horizontal type for use with plug blades as arranged horizontally. Either the vertical type or the horizontal type is used in countries depending on th
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patent: 1994932 (1935-03-01), Vidal
patent: 2597195 (1952-05-01), Smith
patent: 2898649 (1959-08-01), Murray
patent: 3431393 (1969-03-01), Katsuda
patent: 3780260 (1973-12-01), Elsner
patent: 4804821 (1989-02-01), Glucksman
Hasegawa Takahiro
Kashihara Takanobu
Mesaki Junichiro
Nishimura Akira
Earth Chemical Co., Ltd.
Walberg Teresa J.
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