JPH0616526Y2 - Electric fumigator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an electric fumigator for heating and fumigating chemicals such as fragrances, insecticides, repellents, acaricides and bactericides.

[Conventional technology]

Various types of electric fumigators for heating and fumigating medicines are known.

For example, as shown in Japanese Utility Model Publication No. 45-14273, the lower container and the upper container form a hollow instrument body, and the heating element is attached to the lower container by screwing, and the upper portion of the heating element is inserted through a space. An electric fumigator that covers with a top container, forms an opening in the top container, places a drug permeation body on a heating element, and heats and fumigates it.

As shown in Japanese Utility Model Publication No. 49-23102, an electric fumigator in which a protrusion is provided around the opening of the upper container, a mounting hole formed in a plate-shaped heating element is fitted into the protrusion, and then the protrusion is heated and welded.

As shown in Japanese Utility Model Publication No. 52-145180, a support base is provided on the lower container, and a horizontal insertion groove is formed on the support base.
Electric fumigator in which the heating element is attached to the support by sliding the fixed part of the heating element into the insertion groove.

As shown in Japanese Utility Model Laid-Open No. 52-163579, a pair of vertical insertion grooves are provided in the lower container, and a vertical fixing portion with a claw provided on the heating element is fitted into the vertical insertion groove to attach the heating element. Electric fumigator.

[Problems to be solved by the device]

In the case of the first electric fumigator, since the heating element is attached by the screw, not only the screw tightening step is required, the time required for manufacturing, equipment is required, and the cost is high, but also when the screw is loosened, Since it may rattle or fall off, it is necessary to take measures to prevent the screws from loosening during transportation.

Further, since the upper container and the heating element are separated from each other, the upper container is deformed when a force is applied to the instrument body from above, so that the screwed portion of the heating element is deformed and the heating element There is a danger that the equipment body may be deformed by the heat from the heating element due to misalignment.

In the case of the second electric fumigator, since the projection fitted in the mounting hole of the heating element is fixed by heat welding, a heat source and a jig for heat welding are required, and the manufacturing facility is expensive. Not only that, but if you make a mistake in heating and welding during assembly, it cannot be reused and is useless, resulting in high costs.In addition, the heating element cannot be removed and replaced, and the heating element shifts during heat welding, resulting in a fixed position. Sometimes the heating position of the drug may shift and the desired drug volatilization effect may not be obtained.Furthermore, the strength of the heat welding part is weak, and the heat welding part may be affected by shock or vibration during transportation, use, etc. It may be chipped and the heating element may fall off.

In the case of the third electric fumigator, since the fixing portion of the heating element is inserted and fixed in the insertion groove, there is a gap between the insertion groove and the fixing portion and the fixing strength is weak, and heat is generated during transportation or use. In some cases, the body may move and cannot be fixed at a predetermined position, which may cause the heat influence of the heating element on the device body to cause thermal deformation, or the desired volatilization effect regarding the drug volatilization may not be obtained.

According to the fourth electric fumigator, when the vertical fixing portion is fitted into the vertical insertion groove, the nail scrapes off the vertical insertion groove to prevent the nail from catching, the fixing is loosened, or the nail is pressed and the nail itself is pressed. May be deformed and the claws may be removed and the fixing may loosen, and the heating element may move during transportation and use and may not be fixed in place, which causes the heating element to touch the instrument body and deform thermally, The desired drug volatilization effect may not be obtained during drug volatilization.

Therefore, an object of the present invention is to provide an electric fumigator capable of solving the above-mentioned problems.

[Means and Actions for Solving the Problems]

It is an electric fumigator in which the mounting portion of the heating element is sandwiched by the support table provided in the lower container and the holding member provided over the support table and the inner surface of the upper wall of the upper container. The heating element can be fixed at a predetermined position, and the downward external force acting on the upper container can be supported by the lower container via the pressing member and the support base.

〔Example〕

As shown in FIG. 1, the instrument body 1 has a hollow shape with a lower container 2 and an upper container 3, and the lower container 2 has a casing shape in which an upper portion is opened by a lower wall 2a and a peripheral wall 2b. The ventilation hole 4 is formed, and the pair of support bases 5 and 5 and the pair of engagement pieces 6 and 6 are integrally provided upward, and the upper portion of the support base 5 has a stepped shape and a concave groove shape. It has a heating element receiving portion 7 and a pressing member receiving portion 8.

The heating element 9 is provided with a heat radiating plate 11 on an upper part of the heat radiating portion 10, tongue-shaped mounting portions 12 are provided on both sides of the heat radiating plate 11, and an electrode 13 is provided on the heat generating portion 10. The heating element 9 is fitted and placed on the heating element receiving portion 7 of the support 5, and the heating element 9 is fitted and placed between the pair of supporting elements 5 and 5.

The upper container 3 has a casing shape in which a lower portion is opened by an upper wall 3a and a peripheral wall 3b, a drug volatilization hole 14 is formed in the upper wall 3a, and a pair of locking pieces 15, 15 are integrally provided downward. By engaging the locking piece 15 with the engaging piece 6, the lower container 2 and the upper container 3 are connected to each other so that the heating element 9 is located below the drug volatilization hole 14 and the upper wall 3a. A pressing member 16 is provided between the support 5 and the support 5.

As shown in FIGS. 3 and 4, the holding member 16 has a rectangular frame shape, and an engaging projection 17 is integrally provided on the upper surface thereof.
On the lower surface, a fitting portion 18 that fits and is placed on the holding member receiving portion 8 of the support base 5, and a holding portion 1 that contacts the mounting portion 12 of the heating element 9.
9 is formed so that the locking projection 17 engages with the locking recess 20 formed in the upper wall 3a.

Because of this, the mounting portion 12 of the heating element 9 is attached to the support base 5.
Since the heating element receiving portion 7 and the holding portion 19 of the holding member 16 are sandwiched and firmly fixed, they do not move during transportation and use, and can be fixed correctly at a predetermined position at all times.

Further, the mounting portion 12 of the heating element 9 is fitted and placed on the heating element receiving portion 7, the pressing member 16 is fitted and attached to the pressing member receiving portion 8 of the support base 5, and is engaged with the engaging piece 6. By engaging the stopper 15 and attaching the upper container 3, the heating element 9 can be firmly fixed and the instrument body 1 can be assembled.

Further, since the engaging projection 17 of the pressing member 16 is engaged with the engaging recess 20 of the upper container 3, the positional displacement between the pressing member 16 and the upper container 3 is eliminated.

Further, the upper wall 3a of the upper container 3 is continuous with the support base 5 via the pressing member 16, and when an external force is applied to the upper wall 3a by stepping or the like, the external force is applied via the pressing member 16 to the support base 5.
The upper wall 3a of the upper container 3 is not deformed.

Next, a modified example of the heating element mounting portion will be described.

As shown in FIG. 5, a recessed groove is formed in the lower portion of the pressing member 16 to form a fitting portion 18, and a notch portion 18a facing the mounting portion 12 of the heating element 9 is formed inside the fitting portion 18. Fitting part 18
Fits on the upper part of the support 5 and the upper part of the support 5 and the mounting portion 12
May be covered.

As shown in FIG. 6, a hole 12a is formed in the mounting portion 12 of the heating element 9, a projection 7a is provided in the heating element receiving portion 7 of the support base 5, the projection 7a is fitted into the hole 12a, and a pressing member is provided. A depression 19a is formed in the holding portion 19 of the 16 and the projection 7a is formed in the depression 19
You may make it fit in a.

As shown in FIG. 7, a claw 12b is integrally provided on the mounting portion 12 of the heating element 9, the claw 12b is fitted to the upper portion of the support base 5, and the pressing member 16 is attached to the claw 12b and the support base 5. You may fit and fix over.

As shown in FIG. 8, the chemical volatilization hole 14 is provided on the upper part of the pressing member 16.
Is integrally provided with an annular portion 16a having
a may be fitted in the opening 3c of the upper wall 3a, or as shown in FIG. 9, the annular portion 16a faces the upper portion of the radiator 11 of the heating element 9 to serve as a protective frame for the heating element, and The ventilation hole 16b may be formed.

As shown in FIG. 10, an electric insulating frame 16c may be integrally provided on the inner peripheral side of the pressing member 16. In this way, the electric insulation of the electric fumigator can be easily improved.

In the above embodiment, the mat impregnated with the medicine is placed on the heat dissipation plate 11, and the heating portion 10 is energized to generate heat to heat the mat to fumigate the medicine, and the outside of the instrument body 1 through the medicine volatilization hole 14. I described the electric fumigation system that volatilizes into
In the case of an electric fumigator of the type in which a liquid chemical is put in the bolt and the chemical is sucked up by the liquid absorption core and heated to fumigate, it may be performed as shown in FIGS. 11 to 13.

That is, the lower container 2 has a substantially inverted L shape by the bottom wall 2a bent in a crank shape and the peripheral wall 2b, and the detachable body 21 is provided slidably and detachably. A hook 22 provided at a lower portion of the second member 2 and a locking hook 23 for engaging and disengaging the snap type are provided, and a bottom surface 21a thereof is provided with a bolt accommodating recess 25 for accommodating a bolt 24.

A ring-shaped bolt receiving portion 26 into which the upper small diameter portion 24a of the bolt 24 is fitted is integrally provided on the upper portion of the bottom wall 2a of the lower container 2, and the support base 5 is provided around the bolt receiving portion 26.
Are provided radially.

The bolt 24 has substantially the same shape as the bolt accommodating recess 25, is fitted into the upper small diameter portion 24a, and has the inner plug 27 and the liquid absorbing core 28.
The lower part of the liquid absorbent core 28 is immersed in the chemical solution while facing the inside of the bolt 24, and a plurality of supporting parts 29 provided on the bolt receiving part 26 are brought into contact with the shoulder part 24b thereof to contact the bolt 24.
Are held so as not to move slightly, and a gap 30 is formed between the shoulder portion 24b and the bolt receiving portion 26.
Is open to the outside through an annular space 31 between the lower large-diameter portion 24c of the bolt 24 and the peripheral wall 21b of the detachable body 21 and a lower vent hole 32 formed in the bottom of the detachable body 21.

The heating element 9 comprises a ring-shaped heating portion 10, a plate-shaped mounting portion 12 and an electrode 13. The mounting portion 12 is placed on the heating element receiving portion 7 of the support 5 and the bent hook 12b is fitted therein. In addition, the heating element 9 is mounted and mounted on the support base 5 by fitting.

A large-diameter volatilization hole 14 is formed substantially concentrically with the heating element 9 on the upper wall 3a of the upper container 3, and an umbrella-shaped heating part 32 is located below the volatilization hole 14. A plurality of pressing members 16 are integrally provided at 32, the fitting portion 18 of the pressing member 16 is fitted to the pressing member receiving portion 8 of the support base 5, and the pressing portion 19 is in contact with the mounting portion 12. Between the heat receiving portion 32 and the inner surface of the upper wall 3a, the protrusion 33, which is pressed against the heating element receiving portion 7 of the support base 5 and is integrally provided on the upper portion of the pressing member 16, abuts against the inner surface of the upper wall 3a of the upper container 3. The side vent holes 34 are formed in the upper side of the lower container 2 and the engaging pieces 15 and the locking pieces 6 are engaged with each other to connect the upper container 3 to the lower container 2. It is pressed against the 5 so that it can be firmly fixed.

A central vent 35 is formed in the heat receiving portion 32.

The liquid absorbing core 28 faces the inside of the heat generating portion 10 through the hole 36 of the bolt receiving portion 26, and is provided between the hole 26 and the liquid absorbing core 28 and the heat generating portion 1.
Ventilation gaps 37 and 38 are formed between 0 and the liquid absorbent core 28.

By forming the bolt accommodating recess 25 in a tapered shape, a centripetal action occurs when the bolt 24 is fitted and the center of the liquid absorbent core 28 and the center of the hole 36 and the heat generating portion 10 coincide with each other. Since the gaps 37 and 38 have the same size in the circumferential direction and the ventilation is good, the volatility of the drug can be improved.

Then, the bolt 2 is inserted into the bolt storing recess 25 of the detachable body 21.
4. The large diameter portion 24c of No. 4 is fitted and positioned and attached, and the detachable body 21 is attached to the lower container 2 and the upper small diameter portion 24 of the bolt 24.
A is slidably fitted so that a faces the inside of the bolt receiving portion 26, and the locking hook 23 is engaged with the hook 22 to be connected.

At this time, the liquid absorbent core 28 does not come into contact with the bottle receiving portion 26, and even if it comes into contact with the example, it can be fitted smoothly by gently inclining in the fitting direction, and can be fitted to the heat generating portion 10 and the mounting portion 11. And easily insert.

In this state, when the cord 39 is plugged into a power outlet and the power is turned on, the lamp 40 is turned on, and the light guide rod 41 is seen for visual observation, and the detachable body 21 is passed through to illuminate the bottle 24 to illuminate the inside of the bottle. Liquid level confirmation by lighting and bottle 2
4 and the detachable main body 21 provide an illumination effect.

At the same time, the heating element 9 generates heat to heat the upper part of the liquid absorbent core 28, evaporate the drug in the drug solution sucked from the inside of the bolt 24, and volatilize to the outside through the volatilization hole 14, while the heat receiving part 32 is The heating element 9 is heated by heat rise and preheating.

On the other hand, due to the heat generation of the heating element 9 described above, a heat rising airflow is generated and the outside air flows.

As a result, the evaporated chemical is efficiently volatilized to the outside.

Further, since the heat receiving portion 32 is located inside the volatilization hole 14 and above the heat generating element 9, the heat radiated from the heat generating element 9 once hits the heat receiving portion 32 and then further rises to reach each vent hole. As it rises to the outside through the volatilization hole 14, the preheat radiated from the heating element 9 is absorbed by the heat receiving portion 32, the heat receiving portion 32 becomes hot, and a heat retaining effect is produced, and the heat is passed through the inside of the instrument body 1 through the ventilation hole. As a result, a heat rising airflow to the volatilization holes 14 is naturally generated.

On the other hand, the drug evaporated by heating evaporates from around the heating element heating part due to its own heat rising airflow, and the previous heat rising airflow is also added at the heat receiving part, further evaporating upward and passing through each vent hole. While evaporating from the volatilization hole 14,
The heat-retaining effect of the heat receiving part 32 prevents the evaporation agent from condensing without being cooled.

Even if the medicine contacts the heat receiving portion 32, the medicine does not adhere because the heat receiving portion 32 is hot. In other words, when the drug that has normally evaporated from heat comes into contact with a cold wall and is rapidly cooled, drug coagulation occurs and the drug adhesion phenomenon occurs.
This is because the above-mentioned adhesion phenomenon does not occur when it comes into contact with a hot portion.

Further, even if the distance between the upper lid and the heating element is long, the drug can be volatilized from the volatilization hole 14 without adhering the drug to the inside of the instrument by providing the heat receiving part 32 having good thermal conductivity in a high position.

Further, since the heat receiving portion 32 is disposed in the volatilization hole 14 and is lower than the upper surface of the upper container 3, the cross wind is difficult to directly hit the heat receiving portion and is not cooled even if the cross wind blows, and the cross wind is temporarily received. Even if it hits, it is hard to be cooled due to high heat, and the above-mentioned drug adhesion phenomenon due to the rapid cooling due to the side wind becomes less likely to occur, and at least a double heat rising air flow is generated from the vent holes around the center of the heat receiving part 32 and around the heat receiving part 32. Since a heat ascending air current is applied to the outside air through the large evaporation hole, the influence on the chemical evaporation can be remarkably suppressed even if a side wind or atmospheric disturbance occurs.

Combined with the above, the evaporated drug does not adhere to the vent hole part, the passing area of the tablet does not decrease and the evaporation amount does not decrease, and the desired drug efficacy can be expected and the heat receiving Since the part 32 absorbs a large amount of heat, the temperature of the upper surface around the volatilization hole 14 of the upper container 3 does not rise so much, the heating is prevented, the risk of burn injury is reduced, and further, the evaporated chemical is not trapped inside the device body 1. Therefore, it is not necessary to disassemble and clean the apparatus main body 1 without depositing the evaporated chemicals.

Further, since the temperature of the upper surface of the upper container 3 can be lowered as described above, the temperature of the upper surface of the upper body 3 can be electrically reduced even if the distance between the upper container 3 and the heating element 9 is shortened to lower the overall height of the apparatus body. It can be maintained within the temperature range specified by the Goods Control Law.

In other words, in the Electrical Appliance and Material Control Law, there is a regulation that the outer surface temperature of the outer fumigant insecticide that uses 100V electricity is 70 ° C or less. Upper container 3 and heating element 9
Since it is necessary to make a large distance, the total height becomes high. However, according to the electric fumigator according to the present invention described above, even if the distance between the upper container and the heating element is shortened, the temperature around the chemical vaporization part is 70%. It can be kept below ℃.

In the above-described embodiments, the heat receiving portion 32 may be provided on the heating element 9 so as to cover the heating element 9 and have ventilation holes in the central portion and the periphery thereof, and the shapes of these ventilation holes are arbitrary. The ventilation holes in the central portion may be, for example, circular, polygonal, star-shaped, and the like, and the ventilation holes in the periphery may have various shapes such as a slit shape, a hole shape, and an annular shape.

Also, the temperature at which drug adhesion is unlikely to occur varies depending on the type of drug, but when used as an electric mosquito repellent, general allethrin, phenothrin, and aliphatic hydrocarbon solvents,
In the case of using a drug containing pyrethroid insecticide such as flamethrin or praresulin, the heat receiving part temperature is 60 ° C.
Above, it is preferable to keep at 70 ° C. or higher.

For this purpose, it is possible to raise the temperature of the heating element, and a heating element temperature of 70 ° C. or higher and 450 ° C. or lower is suitable.

For example, when a heating element of 120 to 130 ° C is used, the distance between the heating element and the lower surface of the heat receiving portion is less than 10 mm, preferably 5 mm.
By setting the temperature to less than 70 ° C., the temperature of the heat receiving portion can be maintained at 70 ° C. or higher.

Further, the chemicals to be used can be conventional transpiration agents such as insecticides, bactericides, fragrances, deodorants, and the like. , Pyrethroid insecticides such as permethrin, and giraffe insecticides such as sumithione, diazinon, DDVP, and marathons.

In the above embodiment, the heat receiving portion 32 and the pressing member 16 are integrally formed as a separate body from the upper container 3, but as shown in FIG. 14, the heat receiving portion 32 and the pressing member 16 are integrated with the upper wall 3a of the upper container 3. It may be provided in.

In each of the above embodiments, the material of the mounting portion 12 of the heating element 9 may be metal, polymer resin, ceramic or the like.

The material of the holding member 16 is aluminum, stainless steel, copper,
Metals such as brass, ceramics such as alumina, glass, and ceramics, polymer resins such as phenol resin, nylon resin, and polypropenelene resin may be used as long as they can withstand the heat during use, but they have low thermal conductivity. By using a porous material, a heat insulating effect on the upper container can be obtained.

Further, it is preferable that the columnar portions of the support base 5 and the pressing member 16 extending in the vertical direction are made thicker by matching their vertical positions so that an external force from above can be easily transmitted downward.

Further, the mounting portion 12 of the heating element 9 is fitted and mounted on the support base 5,
When the pressing member 16 is placed, a hook, a claw, a frame, and a concavo-convex portion may be provided so as to face each other so that the heating element 9 can be securely fixed.

Further, by using a special heat resistant and chemical resistant material only for the pressing member 16 and using a general material such as polypropylene and ABS for the upper container 3 and the like, it is possible to reduce costs and keep the safety of the electric fumigator high.

Further, the holding member 16 may be provided with a heat insulating frame, a heat insulating frame, a heating element protection frame, etc. to improve the thermal efficiency of the heating element, increase the amount of drug volatilization, and reduce the amount of electricity consumed.

[Effect of device]

The pressing member receiving portion 8 of the support base 5 and the pressing portion 19 of the pressing member 16
Since the mounting portion 12 of the heating element 9 is clamped by the
The heating element 9 is simply attached to the pressing member receiving portion 8 of the support base 5.
Can be firmly fixed in place, its assembly work is easy,
Not only the equipment does not need special equipment, it can be made inexpensive,
Since the heating element 9 does not move and come into contact with the instrument body 1 during transportation or use, the instrument body 1 is not thermally deformed, and since the heating element 9 is in a predetermined position during use,
The desired drug volatilization effect can be obtained.

Further, the upper wall 3a of the upper container 3 and the support base 5 are held by the pressing member 16
Since it is continuously continuous through the lower body 2, when a downward external force acts on the upper container 3 when the instrument body 1 is stepped on, the downward external force is transmitted to the lower container 2 via the pressing member 16 and the support base 5. Since the device main body 1 can be prevented from being deformed, the heating element 9 can be prevented from deforming or moving, the desired drug volatilization effect can be obtained, and the device main body 1 can be thicker than necessary. Therefore, it can withstand the static load test of the Electrical Appliance and Material Control Law.

[Brief description of drawings]

1 to 4 show a first embodiment of the present invention, FIG. 1 is an overall longitudinal sectional view, FIG. 2 is an exploded perspective view of a heating element fixing portion, and FIG.
FIG. 4 is a perspective view of a holding member, a vertical cross-sectional view, and FIGS. 5 to 10 are vertical cross-sectional views showing a modification of a heating element fixing portion.
FIG. 13 to FIG. 13 show a second embodiment, FIG. 11 is an overall vertical sectional view, FIG. 12 and FIG. 13 are perspective views of a holding member and a heat receiving portion, a vertical sectional view, and FIG. 14 is a holding member. FIG. 7 is an overall vertical cross-sectional view showing a modified example of the heat receiving part. DESCRIPTION OF SYMBOLS 1 is an instrument main body, 2 is a lower container, 3 is an upper container, 5 is a support base, 7 is a heating element receiving portion, 8 is a holding member receiving portion, 9 is a heating element, 12 is a heating element mounting portion, and 16 is a holding portion. A member, 19 is a holding part.

Claims (1)

[Scope of utility model registration request] 1. A lower container 2 and an upper container 3 are connected to each other to form a hollow instrument main body 1, and a heating element receiving portion 7 is attached to the lower container 2.
The support base 5 having the pressing member receiving portion 8 is provided, and the mounting portion 12 of the heating element 9 disposed in the hollow portion of the instrument body 1 is fitted and mounted on the heating element receiving portion 7 of the support base 5. , The upper container 3
The pressing member 19 is formed on the pressing member 16 provided over the inner surface of the upper wall 3a and the pressing member receiving portion 8 of the support 5, and the pressing member 19 is pressed against the upper surface of the mounting portion 12 of the heating element 9. An electric fumigator in which the mounting portion 12 of the heating element 9 is sandwiched between the support base 5 and the pressing member 16.