JPH09107860A - Chemical liquid heating and transpiring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chemical liquid heating and transpiring device showing high transpiration, minimized in danger of electric shock caused by insertion of a metallic material. SOLUTION: In this chemical liquid heating and transpiring device in which a chemical liquid container 2 having a liquid sucking core 9 is attached to a device 1 and a heating element unit 3 for forming a ring-shaped gap 10 to face a ceiling opening part 4 of the device is installed around the liquid sucking core, a transpiring cylinder 5 positioned above the ring-shaped gap is arranged inside the ceiling opening part of the device, plural rising flow reinforcing holes 6 are formed on the circumference of the ceiling opening part of the device and above the top of the heating element unit and the device is closed except the ceiling opening part and the rising flow reinforcing holes. A second transpiring cylinder 7 positioned at the outer periphery of the transpiring device 5 and the rising flow reinforcing holes 6 is protrusively installed in a concentric state with the transpiring cylinder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating chemical liquid evaporation device, and more particularly to improvement of a vaporization cylinder of a heating chemical liquid evaporation device for heating and evaporating a chemical liquid such as an insecticide.

[0002]

2. Description of the Related Art Conventionally, as a method for heating and evaporating a drug for the purpose of insecticidal, (1) so-called mosquito coil and (2)
Electric mosquito mats have been loved. In recent years, a method of immersing an absorbent core in a chemical solution and heating the upper part of the core to heat and evaporate the chemical solution has been regained attention because of the convenience of use, the effect being stable for a long time, and the like. This system has been known for a long time, and for example, Japanese Utility Model Publication No. 43-25081 discloses a system by direct heating. In addition, as a method of indirect heating, a method of heating a liquid absorbent core and a heating element with a constant distance therebetween is disclosed in JP-B-44-8361, JP-B-45-14913 and JP-B-45-2924.
No. 4 publication.

The evaporation efficiency of the chemical liquid is closely related to the structure of the heating chemical liquid evaporation device. However, in the case of commercially available products, the evaporation port is provided on the upper part of the body and the ventilation hole is provided on the body part or the bottom part. , Many are in communication with the evaporation port. However, since the heating chemical liquid evaporation device is provided with the lead wires for connecting the heating element, the switch, the fuse, the pilot lamp, etc. below the heating element unit, the heating chemicals evaporation apparatus is provided in the body trunk or the bottom. There is a danger of electric shock when a metal object such as wire is inserted through the ventilation hole.

[0004]

SUMMARY OF THE INVENTION According to the present invention, heating is provided with a structure capable of sealing the lower side of the upper end of a heating element unit to eliminate the risk of electric shock due to insertion of a metal object and maintaining high evaporation efficiency. It is an object of the present invention to improve the evaporation tube of a chemical evaporation device.

[0005]

In order to achieve the above object, the inventors of the present invention have examined the usability, the evaporation efficiency, etc. in the heating chemical liquid evaporation device from all angles, and found that the inside of the top opening of the vessel is A vaporization tube is provided to allow multiple upward flow around the top opening and above the upper end of the heating element unit, i.e., where there is no risk of electric shock even if a metal object such as wire is inserted. By providing a strengthening hole and sealing the body part other than the top opening and the upward flow strengthening hole, it is possible to efficiently evaporate the chemical liquid through the evaporation tube without loss of chemical liquid, and it is extremely effective in preventing electric shock. I found that there is.

That is, according to the first aspect of the present invention, the chemical liquid container having the liquid absorbent core is mounted on the container, and heat is generated around the liquid absorbent core to form an annular gap facing the top opening of the container. In a heated chemical vaporization device having a body unit, inside the top opening of the vessel, a vaporization tube located above the annular gap is provided, around the top opening of the vessel, and A plurality of upward flow strengthening holes are provided above the upper end of the heating element unit, and the inside of the container is closed except for the top surface opening and the upward flow strengthening holes. It relates to the device.

According to a second aspect of the present invention, in the structure of the first aspect, the evaporation tube is provided on the inner surface of the top surface of the vessel, and the evaporation tube is located on the outer periphery of the upward flow strengthening hole. It is provided so as to project substantially concentrically with the cylinder.

[0008]

According to the first aspect of the present invention, the transpiration efficiency is improved by the combined action of the evaporation tube and the upward flow strengthening hole. Further, since the lower side of the upper end of the heating element unit is sealed, the risk of electric shock due to insertion of a wire or the like is extremely low.

The evaporation tube is located above the gap between the liquid absorption core and the heating element unit, and is formed inside the top surface opening. The inner diameter of the evaporation tube is preferably 10 to 30 mm, and the thickness is 0.5 to
3mm, depth (length from the upper end to the lower end of the cylinder inner surface) is 5
-20 mm is suitable. When the depth is less than 5 mm,
No improvement in the efficiency of chemical evaporation due to the evaporation tube was observed. On the other hand, when the depth exceeds 20 mm, there arises a problem that the chemical liquid evaporated in the evaporation tube adheres to the inner surface of the evaporation tube.

It is more advantageous to place the evaporation tube as close as possible to the heating element unit. However, in consideration of heat deterioration of materials such as resin forming the evaporation tube, the lower end of the evaporation tube and the upper end of the heating element unit are taken into consideration. It is necessary to provide a space of 1 mm or more between the and. However, if the distance exceeds 5 mm, the effect of attaching the evaporation tube cannot be sufficiently exerted. Therefore, the distance between the lower end of the evaporation tube and the upper end of the heating element unit is preferably in the range of 1 to 5 mm.

The present invention is characterized in that a plurality of upward flow strengthening holes are provided around the opening on the top surface and above the upper end of the heating element unit. The upward flow strengthening holes have a function of further improving the chemical liquid evaporation efficiency by the evaporation tube.
The shape, the opening area, and the like are appropriately determined in consideration of the design and the like.

According to the second aspect of the present invention, since the second evaporation cylinder is provided on the outer periphery of the evaporation cylinder and the upward flow strengthening hole,
The evaporation efficiency can be further enhanced. The second evaporation tube is provided so as to project substantially concentrically with the evaporation tube and has an inner diameter of 30 to 50 m.
m is preferred. Further, the depth (the length from the upper end to the lower end of the inner surface of the cylinder) is appropriately 5 to 20 mm, and it may be made to hang from the lower end portion (outer end portion) of the upward flow strengthening hole.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A heating chemical liquid evaporation apparatus of the present invention will be described below with reference to the drawings. 1 to 4 show the heating chemical liquid evaporation device of the present invention, the present invention is not limited to these.

An embodiment of the apparatus for vaporizing a heated chemical liquid according to the present invention shown in FIGS. 1 and 2 comprises a container 1 and a chemical liquid container 2,
The chemical liquid container 2 has a structure in which it is screwed into and suspended from a screw portion inside the body 1. The body 1 is hollow and is provided with a heating element unit 3, a top surface opening 4, an evaporation tube 5, an upward flow strengthening hole 6, a screw port 17 for a chemical liquid container, and the like, while a chemical liquid container containing a chemical liquid 8 is provided. 2 has a male screw around the container mouth, and is provided with a liquid-absorbing core 9 protruding from the inside of the container to the outside. Body 1
When the male screw of the chemical liquid container 2 is screwed into the screw port 17 for the chemical liquid container of 1, the lower surface side of the chemical body 1 becomes a sealed state, and the hollow container 1
Only the top surface opening 4 and the upward flow strengthening hole 6 communicate with the inside of the. The evaporation tube 5 projects downward from the top surface opening 4 located in the upper part of the heating element unit 3 provided in the container 1, and the upward flow strengthening hole 6 serves as the top surface opening 4. A plurality of (in this example, six in a radial direction, equidistantly) arrangements are provided around. Further, the heating chemical liquid evaporation device of FIG. 3 has a structure in which the second evaporation cylinder 7 is further provided in a protruding manner. in this way,
If the structure is such that the second evaporation tube 7 is provided on the outer periphery of the upward flow strengthening hole 6, the evaporation efficiency can be further improved.
Further, FIG. 4 shows a heating chemical liquid evaporation device of a type in which the structure of the container 1 is reduced, and the container 1 is attached to the head of the liquid container 2. Reference numeral 16 in the drawing is for fitting and mounting the liquid container 2. It is a pedestal having a recess for doing.

The body 1 is molded by using a semi-rigid or hard synthetic resin, but it may be constructed by dividing it into appropriate parts and assembling them into a required single form. or,
The container body 1 may be partially made of transparent resin or may be perforated to provide a liquid amount confirmation window so that the liquid amount in the liquid medicine container 2 can be confirmed from the outside of the device.

The chemical liquid container 2 is made of a chemical resistant synthetic resin,
After being filled with the chemical liquid 8 and holding the liquid absorbent core 9 in the form of a tight plug through a suitable holding member, the liquid absorbent core 9 is attached to the body 1 and mounted. As a method of attaching the liquid medicine container 2 to the body 1, for example, a method of screwing or fitting a holding body provided on the liquid medicine container 2 (for example, as shown in FIG. Screwing the container mouth of the drug solution container 2 into the screw port 17 to suspend it), or providing a screw-type bottom lid on the bottom surface, and mounting the drug solution container 2 on this, or the head of the drug solution container 2 A method of screwing or fitting the body 1 to the portion to expose the peripheral surface of the liquid medicine container 2 (as shown in FIG. 4 as an example, the liquid medicine container 2 is attached to the screw port 17 located on the lower surface of the body 1). There is a method of screwing the container mouth and mounting the body 1 on the head of the drug solution container 2). At this time, the drug solution container 2 may be placed and held on a pedestal.

The heat generating unit 3 is provided at the center of the top surface of the body 1 so as to surround the upper end of the liquid absorbent core 9 with a gap 10 therebetween. When energized, the portion of the heating element unit that faces the liquid absorption core is heated to a temperature of 105 to 150 ° C. By this radiant heat, the chemical liquid contained in the liquid absorption core 9 passes through the evaporation tube 5 and the top surface opening 4 is formed. Evaporates into the air.

Further, an on / off operation switch 11, a fuse 12, a pilot lamp 13, a power cord 14, etc. are appropriately attached to the outside or inside of the body 1 of the heated chemical liquid evaporation device of the present invention, and these are mutually connected by a lead wire 15. Is connected to the heating element unit 3 (in the drawing, the lead wire 15A
And the lead wire 15B are separated, but are actually connected). The on / off operation switch 11 may include a light source that emits light during the on operation, and the power cord 14
The extension cord may be attached, a so-called cordless type in which the plug terminal is fixed to the body 1, or a storage chamber for storing the power cord may be separately provided in the body 1.

As the chemical liquid 8 used in the present invention, an insecticide or the like is used as a solvent having a high flash point, no odor, and a safe toxicological property, for example, normal paraffin, isoparaffin or naphthenic carbonization having 11 or more carbon atoms. Those dissolved in hydrogen are preferable. Further, a polyoxyalkylene ether-based surfactant and water may be blended to use an aqueous chemical solution in which an insecticide or the like is solubilized. Unlike the oil-based chemical liquid, this aqueous chemical liquid is safer because it has no flammability.

As the insecticide, various conventionally used volatile insecticides can be used, and examples thereof include pyrethroid insecticides, carbamate insecticides, organophosphorus insecticides and the like. Generally, because of its high safety, pyrethroid insecticides are preferably used, for example,
The following insecticides can be exemplified, but of course the present invention is not limited thereto. a) 3-allyl-2-methylcyclopent-2-ene-
4-on-1-yl d-cis / trans-chrysanthate (trade name; Pinamine Forte: manufactured by Sumitomo Chemical Co., Ltd.) b) (S) -2-methyl-4-oxo-3- (2- Propynyl) cyclopent-2-enyl d-cis / trans-chrysanthemate (generic name; pralethrin) c) 5-propargyl-2-furylmethyl d-cis /
Trans-chrysanthemate (trade name; Pinamine D Forte: manufactured by Sumitomo Chemical Co., Ltd.) d) 1-ethynyl-2-methyl-2-pentenyl d-
Cis / trans-chrysanthemate (generic name; empentrin)

The chemical liquid 8 contains, in addition to the insecticide and solvent,
If necessary, a surfactant, an antioxidant, a stabilizer such as an ultraviolet absorber, a fragrance and the like are added. In addition, synergists, repellents and the like can be added to further enhance the insecticidal effect or insect repellent effect.
It is also possible to impart an effect other than insect repellent.

The liquid absorbent core 9 is made of an inorganic substance such as calcium carbonate, magnesia, clay, talc, kaolin, diatomaceous earth, gypsum, porcelain substance, heat-resistant polymer substance, wood flour, pulp, charcoal powder, Organic powder such as activated charcoal is used as starch, dextrin, methyl cellulose, CMC, PVA
It can be obtained by hardening with a sizing agent such as. or,
Formed and fired inorganic and / or organic powder, or braided felt, cotton, cloth, non-woven fabric, etc., or porous evaporation of glass, inorganic fiber, synthetic resin, wood, porous ceramics, porous polymer, etc. A layer, which is preferably covered with a holding material such as glass, inorganic fiber, or synthetic resin, is excellent in strength and easy to adjust the amount of liquid absorption and the evaporation rate, which is more suitable. Then, these liquid absorbent cores 9 are held in the drug solution container 2 in the form of tight plugs through an appropriate holding member.

When the thus obtained heating chemical liquid vaporizing apparatus of the present invention is used with electricity, the chemical liquid that has penetrated into the heat receiving portion of the liquid absorbent core 9 is indirectly heated by the heating element unit 3 to be vaporized. That is, the vapor of the chemical liquid and the air in contact with the heating element unit 3 flow upward as the temperature rises, and then move into the evaporation tube 5, where the chimney effect of the evaporation tube 5 and the upward flow strengthening hole 6 Is efficiently evaporated into the air from the top opening 4.

In order to explain the present invention in more detail, test examples are shown below.

Test Example 1 Pineamine D Forte (trade name; manufactured by Sumitomo Chemical Co., Ltd.) 1.5 wt% as an insecticide, diethylene glycol monobutyl ether 50 wt%, dibutyl hydroxytoluene (BHT) 1.8 wt% and purified water. A synthetic resin pharmaceutical liquid container having an internal volume of 50 ml was filled with 45 ml of an aqueous drug solution containing a, and a liquid absorbent core with a holding member (outer diameter 7.0 mm, length 75.5 mm) was attached. As the liquid absorbent core, a bundle of polyester fibers was covered with a braided core of the same material coated with silicone varnish, and the upper surface was heat-sealed. This chemical solution container was attached to various heated chemical solution vaporizers having the specifications shown in Table 1 and used by energization, and the following items were tested. Table 2 shows the results. (I) Evaporation efficiency: The evaporated insecticidal liquid was trapped in a column packed with silica gel and analyzed by gas chromatography to determine the amount of evaporated Pinamine D forte, and the effective volatilization rate with respect to the reduced amount of insecticidal liquid was calculated. (II) Degree of dirt on the device: Body 1 after 300 hours of use
Alternatively, the chemical liquid adhering to the inside of the evaporation tube 5 was observed.

[0026]

[Table 1] ^{* 1} Evaporation tube: Inner diameter 20 mm, depth 10 mm, distance between evaporation tube lower end and heating element unit 3 mm ^{* 2} Upflow strengthening hole: Width 3 mm, height 10 mm slits at 6 radial / equal intervals ^{* 3} Second evaporation tube: inner diameter 50 mm, depth 10 mm ^{* 4} Comparative Example 2: Top surface opening inner diameter 20 mm, distance between opening and heating element unit 20 mm

[0027]

[Table 2]

As a result of the test, when the heating chemical liquid evaporation apparatus of the present invention was used, the evaporation efficiency was very high, and it was also effective in preventing the apparatus from becoming dirty. On the other hand, a device having a vaporization cylinder but not having an upflow strengthening hole (Comparative Example 1) or a device having neither a vaporization cylinder nor an upflow strengthening hole (Comparative Example 2) has low evaporation efficiency and is free from dirt. Adhesion was also observed. In addition, since the device of the present invention seals the lower side from the upper end of the heating element unit, the risk of electric shock due to insertion of a metal object is extremely low, and in this respect, there is a ventilation hole in the body or bottom of the body. Superior to commercial products.

[0029]

As described above in detail, in the heating chemical liquid evaporation device of the present invention, the vaporization cylinder and the upward flow strengthening hole work well for chemical liquid evaporation, exhibiting high chemical liquid evaporation efficiency, and This is useful because the risk of electric shock due to the insertion of an object is extremely low. Further, in the present invention, the evaporation efficiency can be further improved by providing the second evaporation tube on the outer periphery of the evaporation tube and the upward flow strengthening hole.

[Brief description of the drawings]

FIG. 1 shows a cross-sectional view of an embodiment of a heated chemical liquid evaporation device of the present invention.

FIG. 2 shows a plan view of the heating chemical liquid evaporation device of FIG.

FIG. 3 shows a cross-sectional view of another embodiment of the heated chemical liquid evaporation device of the present invention.

FIG. 4 shows a cross-sectional view of another embodiment of the heated chemical liquid evaporation device of the present invention.

[Explanation of symbols]

 1 Body 2 Chemical Solution Container 3 Heating Element Unit 4 Top Opening 5 Evaporation Tube 6 Upflow Enhancement Hole 7 Second Evaporation Tube 8 Chemical Solution 9 Liquid Suction Core 10 Gap 11 On / Off Operation Switch 12 Fuse 13 Pilot Lamp 14 Power Cord 15 Lead wire 16 Pedestal 17 Screw port for chemical solution container

Claims (2)

[Claims] 1. A heating device comprising a liquid medicine container having a liquid-absorbing core attached to a body, and a heating element unit surrounding the liquid-absorbing core and forming an annular gap facing the top opening of the body. In the chemical vaporization device, a vaporization cylinder located above the annular gap is provided inside the top surface opening of the container, around the top surface opening of the container, and at the upper end of the heating element unit. A heating chemical liquid evaporation device characterized in that a plurality of upward flow strengthening holes are provided further upward, and the inside of the body is sealed except for the top surface opening and the upward flow strengthening holes. 2. The heating chemical liquid vaporization device according to claim 1, wherein a second vaporization pipe located on the outer surface of the vaporization pipe and the upward flow strengthening hole is provided on the inner surface of the top surface of the container. A heated chemical liquid evaporating device characterized in that it is provided so as to project substantially concentrically.