JP2002224208A - Heating transpiration device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating transpiration device preventing a chemical from transpiration from the outer side of a chemical absorbing rod. SOLUTION: In this heating transpiration device for heating the liquid absorbing rod 4 provided so as to be projected from a container 1 filled with liquid chemicals by a heating element 5 provided around the chemical absorbing rod 4 and transpiring the liquid chemical sucked up by the chemical absorbing rod 4, at least the outer side near the heating element 5 of the chemical absorbing rod 4 is covered with a liquid chemical non-permeable member 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating and evaporating apparatus for vaporizing chemicals such as fragrances and insecticides by heating.

[0002]

2. Description of the Related Art Conventionally, there has been known a heating and vaporizing apparatus in which a porous liquid absorbent core is immersed in a drug solution and an upper portion of the porous liquid absorbent core is heated by a heating element to evaporate the drug. . As the porous absorbent core used in this heating and evaporation apparatus, felt, inorganic powder or a material obtained by fixing inorganic powder and wood powder and the like with a water-soluble glue, or a powder containing organic powder as a glue is used. What is fixed by using is used.

[0003]

As described above, the drug is evaporated from the porous absorbent core by heating the periphery of the upper portion of the porous absorbent core with a heating element as described above. Since the liquid core has an exposed outer surface,
The drug evaporates from this outer surface as well, causing the following problems. That is, the drug evaporated from the outer surface of the porous liquid absorbent core adheres to the heating element, and the performance of the heating element deteriorates. In addition, when evaporating due to the generation of an updraft, an excess amount of the agent evaporates, and efficient evaporating cannot be performed. Further, the drug evaporated from the outer surface of the porous absorbent core diffuses in the device, and as a result, dew condensation occurs on the inner wall surface of the device, thereby contaminating the inside of the device and generating electricity of the device due to the dew condensation. There is a risk of causing an abnormality in the circuit.

[0004] The present invention has been made in view of the above-mentioned problems of the prior art, and provides a heating and evaporating apparatus capable of preventing a drug from evaporating from the outer surface of a porous liquid absorbent core. The purpose is to do.

[0005]

According to the present invention, a liquid absorbing wick provided so as to protrude from a container filled with a chemical solution is heated by a heating element provided around the liquid absorbing wick, and the liquid absorbing wick is heated. In a heating and evaporating apparatus for evaporating the chemical liquid sucked up by a liquid core, at least an outer surface of the liquid absorbing core near the heating element is covered with a chemical liquid impermeable member. I will provide a.

[0006] The chemical-impermeable member may be a synthetic resin film. Further, the liquid absorbing core can be made to suck up a chemical solution by a capillary phenomenon.
Further, the liquid-absorbing core is a top or sliver-shaped fiber bundle that sucks up the liquid medicine by capillary action, the liquid-impermeable member is a synthetic resin film, and the liquid-absorbing core surrounds the liquid medicine. It can be covered with an impermeable member and formed into a column shape.

Further, the liquid absorbing core can be indirectly heated by the heating element via the chemical liquid impermeable member. Further, an ascending airflow can be generated in a gap formed between the outer peripheral surface of the liquid absorbent core and the inner peripheral surface of the heating element. Further, an outside air intake hole is formed in a part of the heating and evaporating device, and the ascending airflow can be generated by introducing outside air into the heating and evaporating device through the outside air intake hole.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a heating and evaporating apparatus according to the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a container filled with a chemical solution (not shown) such as an aromatic liquid or an insecticidal liquid. A cylindrical opening 2 extending upward is formed at the upper center of the container 1. The inner plug 3 is fitted into the opening 2. The inner plug portion 3 has a through hole formed at the center thereof, and the liquid absorbent core 4 penetrates the through hole. As shown in FIG.
The liquid absorbent core 4 is held by the inner plug portion 3 in a state where the lower end side is housed in the container 1, and the upper end side protrudes from the container 1 through the through hole of the inner plug portion 3, and is provided in the container 1. ing. The liquid absorbing core 4 is for sucking up the chemical liquid filled in the container 1.

An annular heating element 5 is provided on the outer periphery of the upper end of the liquid absorbing core 4 by an appropriate means (not shown). As shown in FIG. 1, the inner peripheral surface of the heating element 5 and the liquid absorbing core 4
A gap 10 is formed between the outer peripheral surface and the outer peripheral surface. The heating element 5 is for heating the liquid absorbent core 4 and evaporating the chemical solution sucked up by the liquid absorbent core 4. In addition,
The heating element 5 is electrically connected to a power source such as a power plug.

On the container 1, a protective body 6 for protecting the inside of the apparatus is provided detachably from the container 1. Figure 1
As shown in (1), this protective body 6 is formed substantially in the shape of a cap as a whole, and a transpiration port 7 is formed in the uppermost central portion. The transpiration port 7 is used to transpirate the medicine outside the apparatus. One or more outside air intake holes 8 are formed on the outer periphery of the lower end of the protection body 6. The outside air intake hole 8 takes in outside air into the protection body 6 and
This is for generating an upward air flow in the gap 10 formed between the inner peripheral surface of the liquid absorbent core 4 and the outer peripheral surface of the liquid absorbent core 4.

Next, the features of the present invention will be described. At least the outer surface of the liquid absorbing core 4 near the heating element 5 is covered with a liquid-impermeable member that does not allow the liquid medicine to permeate. In the structure shown in FIG. 1, the entire outer surface of the liquid absorbent core 4 is covered with a chemical liquid impermeable member 11. This liquid-impermeable member 11
, A synthetic resin film can be used.
Further, as the liquid absorbing core 4, one that sucks up a chemical solution by a capillary phenomenon, for example, a top or sliver-like fiber bundle can be used. In this case, the liquid absorbing core 4 can be covered with a synthetic resin film as the liquid impermeable member 11 and formed into a column shape. The liquid absorbent core 4 having a synthetic resin film in the outer layer can be manufactured by simply winding the fiber bundle of the liquid absorbent core 4 with a synthetic resin film.
Alternatively, the fiber bundle of the liquid absorbent core 4 is passed through a synthetic resin (polyethylene) hollow extruder to inject polyethylene onto the peripheral wall of the fiber bundle, and then cooled to form a synthetic layer on the outer layer of the liquid absorbent core 4. It can be manufactured by forming a resin film layer.

As described above, since the liquid absorbing core 4 is covered at least on the outer surface near the heating element 5 with the liquid-impermeable member 11, the heating element 5 is interposed through the liquid-impermeable member 11. Will be heated. Therefore, the heating element 5
When the liquid absorbent core 4 is heated by this, the chemical solution sucked up by the liquid absorbent core 4 does not evaporate from the outer peripheral surface of the liquid absorbent core 4, but only from the upper end of the liquid absorbent core 4. The chemical evaporated from the upper end of the liquid absorbent core 4 evaporates out of the apparatus through the evaporation port 7.

As described in the section of the prior art, in the related art, since the outer surface of the liquid absorbent core is exposed, the drug evaporates also from the outer surface, and as a result, the drug adheres to the heating element. However, according to the above embodiment, at least the outer surface of the liquid absorbing core 4 near the heating element 5 has the chemical-impermeable member 11.
When the heating element 5 heats the liquid-absorbing wick 4, the chemical solution sucked up by the liquid-absorbing wick 4 is
Evaporates only from the upper end of the liquid absorbent core 4 without evaporating from the outer peripheral surface of. Therefore, since the medicine does not adhere to the heating element, it is possible to prevent the performance of the heating element from deteriorating due to the adhesion of the medicine. In addition, since the excess amount of the drug does not evaporate, efficient evaporation can be performed. Further, since the evaporated drug does not diffuse in the apparatus, dew condensation does not occur on the inner wall surface of the apparatus and the inside of the apparatus is not contaminated.

Since one or a plurality of outside air intake holes 8 are formed in the outer periphery of the lower end of the protection body 6, outside air is taken into the protection body 6 through the outside air intake holes 8 and rises into the gap 10. Airflow is generated and the drug is more efficiently
It is possible to evaporate out of the apparatus through the evaporator port 7.

FIG. 1 shows a case where the entire outer surface of the liquid absorbent core 4 is covered with a chemical-impermeable member 11, but as shown in FIG. The chemical liquid impermeable member 11 may be coated only on the outer surface of the liquid absorbing core 4 facing the surface. As shown in FIG. 3, a flange 12 is attached to the heating element 5, and a chemical-impermeable member 11 is provided on an inner peripheral surface of the flange 12, so that the inner peripheral surface of the flange 12 is opposed to the flange 12. The outer surface of the absorbent core 4 may be covered with a chemical-impermeable member 11. Further, the entire flange portion 12 may be formed of a chemical-impermeable material.

As shown in FIG. 4, an extended cylindrical portion 15 is formed integrally or separately above the upper end of the inner plug portion 3, and a heating element 5 is provided on the outer periphery of the cylindrical portion 15. In this case, the liquid-absorbing wick 4 is provided by providing a chemical-impermeable member on the entire outer surface of the inner plug portion 3 or the outer surface of the cylindrical portion 15.
However, at least the outer surface near the heating element 5 may be covered with a chemical liquid impermeable member. Also, the inner plug part 3 or the cylindrical part 1
5 itself may be formed of a liquid-impermeable material.

Further, as shown in FIG.
A cylindrical portion 14 extending downward from the outer periphery of the evaporation port 7 is formed so that the upper end side of the liquid absorbing core 4 is inserted into the cylindrical portion 14. When the liquid-absorbing core 4 is provided, a chemical-impermeable member is provided on the entire inner peripheral surface of the cylindrical portion 14 or on the inner peripheral surface of the cylindrical portion 14 facing the liquid-absorbing core 4. The outer surface near the heating element 5 may be covered with a chemical-impermeable member. In short,
As long as at least the outer surface of the liquid absorbing core 4 near the heating element 5 can be covered with the chemical liquid impermeable member, the liquid absorbing core 4 is not limited to the illustrated one, and may be any type. Further, the cylindrical portion 14 may be formed integrally with or separately from the protective body 6. Further, the entire cylindrical portion 14 may be formed of a chemical-impermeable material.

The liquid absorbing core 4 may be a conventionally known felt, an inorganic powder, or an inorganic powder and a wood powder or the like formed by fixing with a glue. A sliver-like fiber bundle drawn by a top or leveler carded with fibers or natural fibers, or as it is bonded with a thermosetting adhesive (for example, polyurethane resin), or mixed with a low-melting synthetic resin Compressed and heated fiber bundles. As synthetic fibers, polyester,
Examples thereof include polypropylene, acetate, and nylon. Examples of natural fibers include rayon and cotton. The liquid absorbent core 4 is for sucking up a chemical solution by utilizing a capillary phenomenon, and has a porosity of 20% to
It can be 80%, preferably 50% to 70%. In addition, examples of the chemical liquid include an aromatic liquid, a deodorant liquid, an insect repellent liquid, and an insecticidal liquid. Examples of the drug-impermeable member include, for example, metal, glass, and a synthetic resin molded product or film, and more preferably, a synthetic resin film such as polyethylene, polypropylene, polyester, and nylon. it can.

[0019]

According to the present invention, an absorbent core provided so as to protrude from a container filled with a drug solution is heated by a heating element provided around the absorbent core, and the absorbent core is heated. In the heating and evaporating apparatus for evaporating the chemical liquid sucked up by the above, since at least the outer surface of the liquid absorbent core near the heating element is covered with a chemical liquid impermeable member, the drug is absorbed from the outer surface of the liquid absorbent core. Can be prevented from evaporating.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a heating and evaporating apparatus according to the present invention.

FIG. 2 is a cross-sectional view showing another embodiment.

FIG. 3 is a cross-sectional view showing still another embodiment.

FIG. 4 is a cross-sectional view showing still another embodiment.

FIG. 5 is a sectional view showing still another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container 2 Opening part 3 Inner plug part 4 Liquid absorption core 5 Heating element 6 Protector 7 Evaporation port 8 External air intake hole 10 Gap 11 Chemical liquid impermeable member 12 Flange part 14 Tube part 15 Tube part

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Asako Yonehara 1-4-10 Shimochirai, Shinjuku-ku, Tokyo F-term in ST Chemical Co., Ltd. (reference) 2B121 CA04 CA17 CA20 CA21 CA35 CA42 CA46 CA52 CA53 CA54 CA60 CC02 EA01 FA06 4C080 AA09 BB03 BB05 BB07 HH02 JJ06 KK04 NN26 NN27 NN28 QQ12 QQ18

Claims (7)

[Claims] 1. A liquid-absorbing wick provided so as to protrude from a container filled with a liquid medicine, is heated by a heating element provided around the liquid-absorbing wick, and the liquid medicine sucked up by the liquid-absorbing wick. In the heat evaporation device for evaporating, at least the outer surface of the liquid absorbing core near the heating element is:
A heating and evaporating apparatus, which is covered with a chemical liquid impermeable member. 2. The heat evaporation device according to claim 1, wherein the liquid-impermeable member is a synthetic resin film. 3. The heat evaporation device according to claim 1, wherein the liquid-absorbing wick absorbs a chemical solution by a capillary phenomenon. 4. The liquid-absorbing core is a top or sliver-shaped fiber bundle that sucks up a liquid chemical by capillary action, the liquid-impermeable member is a film made of synthetic resin, and the liquid-absorbing core is a peripheral part thereof. 2. The substrate is covered with the liquid-impermeable member and formed into a column shape.
A heating and evaporating apparatus according to item 1. 5. The heat evaporation device according to claim 1, wherein the liquid absorbent core is indirectly heated by the heating element via the chemical liquid impermeable member. 6. An airflow is generated in a gap formed between an outer peripheral surface of the liquid absorbing core and an inner peripheral surface of the heating element. A heating and evaporating apparatus according to item 1. 7. The heating air evaporation device according to claim 6, wherein an outside air intake hole is formed in a part of the heating evaporation device, and the upward air flow is generated by introducing outside air into the heating evaporation device through the outside air intake hole. A heating and evaporating apparatus according to item 1.