Fan type chemical diffusing apparatus

Abstract

A fan type debugging apparatus is provided in which the active ingredient impregnated body or mass is disposed in a wind inlet side of the fan type blower and is designed to provide a wind force resistance which in terms of the proportion of current consumption by the motor in the presence of the active ingredient impregnated body or mass to current consumption by the motor in the absence of the active ingredient impregnated body or mass, ranges from 5 to 25%.

Description

[0001] This application is a Divisional Application of Ser. No. 10 / 181,573 filed Jul. 18, 2002, which is a U.S. National Phase Application under 35 USC 371 of International Application PCT / JP01 / 00610 filed Jan. 30, 2001.TECHNICAL FIELD [0002] The present invention relates to a fan type chemical diffusing apparatus of volatilizing a chemical, a technique for diffusing an active ingredient of a volatile chemical such as an insecticide, insect repellent or moth-proofing agent, aromatic chemical and deodorant by ventilating a carrier body impregnated with the active ingredient while utilizing a fan type blower powered by a motor. [0003] More specifically, the invention relates to a fan type debugging apparatus for repelling and exterminating or excluding noxious or harmful insects including bugs such as mosquitoes, flies, cockroaches, mites, ants and centipedes and clothing bags such as skin beetles and clothes moths by ventilating a carrier body impregnated with an active ingredient wh...

AI Technical Summary

Benefits of technology

The present invention provides a fan type chemical diffusing apparatus for repelling and excluding noxious or harmful insects with an active ingredient containing at least one chemical having a vapor pressure of not less than 1.0×10−4 mmHg at a temperature of -30°C and effective to act as an insecticide or acaricide or to control growth, or to hinder bloodsucking, biting or eating behavior, of the insect, or to repel the insect, or effective to prevent any other damage by the insect. The apparatus includes a fan type blower powered to be driven by a motor, an active ingredient impregnated body or mass, and a fan air inlet and air outlet. The apparatus is compact and small-sized, and the active ingredient is efficiently volatilized with wind resistance. The fan type blower has a specific air resistance, size, and weight to optimize motor performance. The invention also provides a fan type debugging apparatus for repelling and excluding a noxious or harmful insect with an active ingredient containing at least one chemical having a vapor pressure of not less than 1.0×10−4 mmHg at a temperature of -30°C and effective to act as an insecticide or acaricide or to control growth, or to hinder bloodsucking, biting or eating behavior, of the insect, or to repel the insect, or effective to prevent any other damage by the insect.

Problems solved by technology

As a result, it is forced to be complex in structure and makes the apparatus large in size.

The requirement that the active ingredient impregnated body and the fan be arranged to efficiently send air into, through and out of the active ingredient impregnated body tends to make the apparatus structure complex and large in size.

If the apparatus is to be powered by a battery, providing a space for accommodating the battery in the apparatus makes the apparatus even more complex and larger in size.

However, many problems still remain unresolved, for example, as regards an unsatisfactory durability (e. g., brittleness) of the fan which must be made by forming, a limited impregnable amount (small amount) of an active ingredient and, if the fan is of replacement type, the time, labor and cost entailed for replacement, which may make the apparatus poor in utility and serviceability.

The first type debugging apparatus seems to lack concreteness and seems to have many problems to be resolved for practical use.

The second type debugging apparatus is technologically concrete and practical but if ever practiced seems to lack flexibility.

But, the idea of requiring it to be shaped so as to reduce wind resistance as much as possible was found much questionable.

This is a loss in wind force and in other words a loss in driving energy.

In contrast, excessively increasing air resistance would reduce the wind speed of a wind coming out of the air outlet and lose the capacity to carry the chemical far.

The fourth type debugging apparatus seems to lack concreteness for using a battery as power supply and seems to have many problems to be resolved for practical use.

However, no consideration appears to be taken, e. g., in efficiently using the battery to allow the chemical to be volatilized for a prolonged time period.

However, using this type of apparatus as placed in a living space in a dwelling proves it insufficiently efficacious.

It has been found, however, that any of these measure cannot be taken without making larger the entire volume of the chemical impregnated body, or without making the fan larger in size or deteriorating energy efficiency.

Especially, an increase of the chemical impregnated body in size brings about the problems as follows: (1) Local changes in air flow within the chemical impregnated body.

This leads to an unbalance of volatilization over the entire impregnated body and prevents the chemical from volatilizing stably.

However, increase in the size of the chemical impregnated body makes longer the distance for the chemical to move and requires longer time for the chemical to be made even in the body.

(3) An increase in size of the chemical impregnated body for the reason of the problem mentioned at (1) above also brings about a drop in the air flow per unit time from the air outlets (volatilization outlets) of the chemical impregnated body receptacle, which leads to a drop in the ability of the chemical to volatilize into a room and in turn to a drop in the efficacy of the chemical.

Made to resolve these problems, an attempt to intensify the fan's wind force is an attempt to waste energy and proves inefficient and uneconomical.

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