JP6626305B2 - Chemical liquid evaporator and method for manufacturing container used therein - Google Patents

Description

  The present invention relates to a chemical vaporizer and a method of manufacturing a container used for the chemical vaporizer.

  2. Description of the Related Art Conventionally, in order to make a living space such as a living room, a toilet, or the interior of an automobile a comfortable space, a chemical vaporizer that volatilizes a chemical such as an aromatic liquid has been used. As one of them, there is a type in which a liquid medicine is accommodated in a container, a liquid absorption core is inserted into the container, and the liquid medicine sucked up by the liquid absorption core is volatilized. In this type of chemical liquid vaporizer, the liquid absorbent core is inserted so as to contact or substantially contact the inner wall surface of the cylindrical mouth of the container so that the liquid does not spill due to shaking or falling of the container. However, if the mouth is completely closed with the liquid-absorbent wick, the temperature in the surrounding environment will increase and the pressure inside the container will be excessive, and a large amount of the chemical will be drawn up along the liquid-absorbent wick. Further, the sucked-up chemical liquid oozes out of the liquid-absorbing wick, leading to waste of the chemical liquid.

  In view of the above, Patent Literatures 1 and 2 are fitted into a cylindrical neck or a neck forming an opening of a container so that the inside and outside of the container communicate with each other even in a state where the liquid absorbent core is inserted into the container. It has been proposed to form a slit-shaped air hole in the inner plug. As a result, a rise in the pressure in the container and, consequently, a large ejection of the chemical solution are suppressed.

Japanese Utility Model Publication No. 55-10700 Japanese Utility Model Publication No. 55-104435

  However, the above-mentioned air holes cannot always completely prevent a large amount of the chemical solution from seeping out. If the air hole is large, it is considered that a certain effect or more can be secured, but in this case, the chemical solution may be spilled due to the container shaking or falling over. Therefore, the present inventor considered that it is important to return the exuded chemical solution to the container in order to prevent waste of the chemical solution.

  In this regard, the above-described air holes can also function as a return route for the chemical solution into the container. However, as described above, if the container is shaken or overturned, the air hole cannot be made a certain size or more, and this return route must be a narrow route. Then, due to the surface tension of the chemical solution, the chemical solution easily stays in this return route, causing clogging. In particular, unless the air escapes from the inside of the container, the chemical liquid cannot return to the inside of the container. Therefore, the clogging makes it more difficult for the chemical liquid to return to the container.

  SUMMARY OF THE INVENTION It is an object of the present invention to provide a chemical vaporizer that can quickly return a chemical solution that has overflowed out of a container along a liquid absorption wick into the container.

  A chemical vaporizer according to a first aspect of the present invention is a chemical vaporizer that volatilizes a chemical, and includes a container, an inner stopper, and a liquid absorbent core. The container includes a body having a liquid space in which the chemical solution is stored, and a neck formed in a tubular shape so as to communicate with the liquid space and extending upward from the body. The inner plug has a cylindrical shape fitted into the neck portion and having an inner wall surface that defines a passage for communicating the liquid space with the external space. The body has an outer wall surface, and is inserted into the liquid space through the passage to suck up the chemical liquid, in such a manner that the outer wall surface contacts or substantially contacts the inner wall surface of the inner plug. . In a state where the liquid absorbent core is inserted into the liquid space via the passage, between the outer wall surface of the liquid absorbent core and the inner wall surface of the inner plug, the liquid space and the external space are Is formed. The lower portion of the inner plug is configured to increase in diameter as the passage goes downward.

  Here, the lower part of the inner plug that defines the passage into which the absorbent core is inserted is configured to expand the diameter of the passage downward. As a result, the air hole formed between the outer wall surface of the liquid absorption core and the inner wall surface of the inner plug also increases in diameter at the lower part of the passage, and the function of the surface tension of the chemical solution is weakened by the expansion. Can be In other words, when the chemical solution that has overflowed out of the container along the absorbent core returns to the vicinity of the lower portion of the passage through the air hole, clogging is unlikely to occur. Therefore, the chemical solution that has overflowed out of the container along the absorbent core can be quickly returned to the container.

  The chemical vaporizer according to a second aspect of the present invention is the chemical vaporizer according to the first aspect, wherein the inner wall surface at the lower portion of the inner plug has an enlarged surface for continuously increasing the diameter of the passage. Including.

  Here, a diameter-expanding surface that continuously expands downward is formed in a lower portion of the passage into which the liquid-wicking core is inserted. Therefore, the chemical solution returns to the vicinity of the lower portion of the passage through the air hole, slides along the enlarged surface, and can quickly return to the lower liquid space.

  A chemical vaporizer according to a third aspect of the present invention is the chemical vaporizer according to the second aspect, wherein the enlarged surface linearly expands the passage in a longitudinal sectional view.

  Here, since the enlarged diameter surface is formed in a straight line, the chemical liquid flows more easily.

  The chemical vaporizer according to the fourth aspect of the present invention is the chemical vaporizer according to the third aspect, wherein the angle between the enlarged surface and the central axis of the inner plug is θ in a vertical cross-sectional view, 5 ° ≦ θ ≦ 75 °.

  Here, since the angle of inclination of the enlarged diameter surface is relatively steep, the chemical liquid flows more easily.

  The chemical vaporizer according to a fifth aspect of the present invention is the chemical vaporizer according to the first aspect, wherein the inner wall surface at the lower portion of the inner plug has a diameter-enlarging surface that expands the passage stepwise. Including.

  Here, in the lower part of the passage into which the liquid absorbent core is inserted, the volume of the space for the return route of the chemical solution can be greatly increased, the surface tension of the chemical solution can be reduced, and clogging can be prevented.

A chemical vaporizer according to a sixth aspect of the present invention is a chemical vaporizer for vaporizing a chemical, and includes a container and a liquid absorbent core. The container is formed in a cylindrical shape having a body portion having a liquid space in which the chemical solution is accommodated, and an inner wall surface defining a passage communicating the liquid space with an external space, and upward from the body portion. An extending neck. The liquid absorbing wick has an outer wall surface, and is inserted into the liquid space through the passage to suck up the liquid medicine in such a manner that the outer wall surface contacts or substantially contacts the inner wall surface of the neck portion. . In a state in which the liquid absorbent core is inserted into the liquid space via the passage, between the outer wall surface of the liquid absorbent core and the inner wall surface of the neck portion, the liquid space and the external space are separated from each other. An air hole to be communicated is formed. The lower part of the neck is configured to increase in diameter as the passage goes downward.
Chemical vaporizer.

  Here, the lower part of the neck of the container that defines the passage into which the liquid absorbent core is inserted is configured to increase the diameter of the passage downward. As a result, the air holes formed between the outer wall surface of the liquid absorption core and the inner wall surface of the neck also increase in diameter at the lower part of the passage, and the function of the surface tension of the chemical solution is weakened by this expansion. . In other words, when the chemical solution that has overflowed out of the container along the absorbent core returns to the vicinity of the lower portion of the passage through the air hole, clogging is unlikely to occur. Therefore, the chemical solution that has overflowed out of the container along the absorbent core can be quickly returned to the container.

  A chemical vaporizer according to a seventh aspect of the present invention is the chemical vaporizer according to any of the first to sixth aspects, wherein the body has a shoulder continuous with a lower edge of the neck. On the lower surface of the shoulder portion, near the lower end edge of the neck portion, a meat reservoir made of a material constituting the container is formed.

  Here, a meat reservoir generated during the manufacture of the container is formed on the lower surface of the shoulder of the container. In other words, the formation of a meat pocket on the inner wall surface of the neck is avoided. As a result, the return route of the chemical solution along the inner wall surface of the neck or the inner plug is not blocked by such a meat reservoir. Therefore, clogging of the return route of the chemical solution can be further suppressed.

  A chemical vaporizer according to an eighth aspect of the present invention is the chemical vaporizer according to any one of the first to seventh aspects, wherein the liquid absorbent core is inserted into the liquid space via the passage. In the above, a dish portion that opens upward around the liquid absorbing core is formed near at least one of the upper portion of the neck portion and the upper portion of the inner plug.

  Here, a dish portion is formed around the liquid absorbing core near at least one of the upper portion of the neck portion and the upper portion of the inner plug. And since this plate part is opening upward, a chemical | medical solution can be stored for a while. As a result, even when a large amount of the chemical liquid overflows from the absorbent core, the chemical liquid can be returned to the return route before the chemical liquid is spilled along the outer wall surface or the like of the container.

A method for manufacturing a container according to a ninth aspect of the present invention is the method for manufacturing a container used in the chemical vaporizer according to any one of the first to eighth aspects, and includes the following (1) to (4). Step.
(1) Extruding a cylindrical parison from a die.
(2) receiving the parison in a mold of the container;
(3) A step of inserting a blow nozzle into the parison in the mold from a side of the parison corresponding to the neck.
(4) forming the container by blowing air from the blow nozzle to press the parison against the inner wall of the mold.
In the step of inserting the blow nozzle, the tip of the blow nozzle is inserted to a position deeper than a position corresponding to a lower edge of the neck in the molding die.

  According to the method here, the meat pocket generated during blow molding of the container is formed not on the inner wall surface of the neck but on the lower surface of the shoulder of the container. As a result, the return route of the chemical solution along the inner wall surface of the neck or the inner plug is not blocked by such a meat reservoir. Therefore, clogging of the return route of the chemical solution can be further suppressed.

  According to the present invention, the neck or the lower part of the inner plug of the container that defines the passage into which the liquid absorbent core is inserted is configured to increase the diameter of the passage downward. As a result, the air hole formed between the outer wall surface of the liquid absorption core and the inner wall surface of the neck or the inner plug also increases in diameter at the lower part of the passage. Is weakened. In other words, when the chemical solution that has overflowed out of the container along the absorbent core returns to the vicinity of the lower portion of the passage through the air hole, clogging is unlikely to occur. Therefore, the chemical solution that has overflowed out of the container along the absorbent core can be quickly returned to the container.

The front view of the chemical vaporizer concerning one embodiment of the present invention. The front view of the chemical vaporizer from which the cap was removed. The sectional view on the AA line of FIG. FIG. Sectional drawing of a liquid absorption core. Sectional drawing which shows the attachment structure of a neck part, a liquid-wicking core, and a plug. The figure explaining the manufacturing process of a container. Another figure explaining the manufacturing process of a container. FIG. 6 is yet another view for explaining the manufacturing process of the container. FIG. 6 is yet another view for explaining the manufacturing process of the container. Sectional drawing which shows the attachment structure of the neck part, the liquid absorption core, and the inner plug which concern on a modification. Sectional drawing which shows the attachment structure of the neck part, liquid absorption core, and inner plug which concerns on another modification. Sectional drawing which shows the attachment structure of the neck part, the liquid suction core, and the inner plug which concerns on another modification.

  Hereinafter, a method for manufacturing a chemical vaporizer and a container used in the chemical vaporizer according to an embodiment of the present invention will be described with reference to the drawings.

<1. Overall composition of chemical vaporizer>
As shown in FIG. 1 and FIG. 2, the chemical vaporizer 100 according to the present embodiment is inserted into the container 1 through the container 1 containing the chemical and the opening 5 of the container 1 to suck up the chemical. And a liquid absorbing core 2. In addition, the chemical vaporizer 100 further includes a cap 3 that covers the mouth 5 of the container 1 together with the liquid absorbent core 2 protruding from the mouth 5. In a state in which the cap 3 is mounted, the liquid absorbent core 2 is substantially closed by the cap 3 and is shut off from the external space. Therefore, in this state, the chemical liquid does not continuously evaporate from the absorbent core 2. Therefore, the cap 3 is attached when the chemical vaporizer 100 is not used, and is removed when used. When the cap 3 is removed, the chemical starts to volatilize into the surrounding space from the liquid absorbent core 2 impregnated with the chemical, and the effect of the chemical can be exhibited.

  In the present embodiment, the mouth 5 of the container 1 is strictly defined by a neck 12 of the container 1 main body and a cylindrical inner plug 4 fitted into the neck 12. Then, the liquid absorbent core 2 is inserted into the inner plug 4. At this time, the inner stopper 4 supports the liquid absorbent core 2 so as to stand up and down in the container 1.

  In the following description, up and down, left and right, and front and back shall be defined as shown in FIGS. 2 and 3 unless otherwise specified. FIGS. 2 and 3 show the use state of the chemical vaporizer 100 with the cap 3 removed. As shown in FIG. 1, the chemical vaporizer 100 is installed in such a manner that the liquid absorbent core 2 projects upward from the container 1 during use. Hereinafter, after describing the chemical solution, the liquid absorbent core 2, the container 1, and the inner plug 4 will be described in detail. After that, a method of using the chemical vaporizer 100 and a method of manufacturing the container 1 will be described.

<2. Chemical>
The chemical solution contains a functional component for making a living space, such as a living room or a toilet where the chemical solution vaporizer 100 is installed, a car interior, etc., a comfortable space. Examples of such a functional component include a fragrance, a deodorant component, an insecticide component, an insect repellent component, a repellent component, an antibacterial component, and the like, and one of these can be used alone. However, a plurality of them can be used in combination. Further, the functional component here may be oily or aqueous as long as it can be volatilized. The chemical liquid is used as an aromatic liquid when it contains a fragrance, as a deodorant liquid when it contains a deodorant component, as an insect repellent liquid when it contains an insect repellent component, or as an antibacterial liquid when it contains an antibacterial component. used. Typically, an aromatic liquid containing a fragrance or an aromatic deodorant liquid containing a fragrance and a deodorant component is used as the chemical liquid.

  The viscosity of the chemical is 0.1-30 mPa.s under a 25 ° C. environment. s, preferably 0.1 to 20 mPa.s. s, more preferably 0.1 to 10 mPa.s. More preferably, s. The numerical value of the viscosity here is a value measured in a 25 ° C. environment using a vibrating viscometer (manufactured by VM-3OO-L Sekonic).

<3. Liquid Absorbent Core>
The liquid absorbent core 2 is a member for sucking out the chemical liquid from the container 1 and volatilizing it outside. As shown in FIG. 4, the liquid absorbent core 2 according to the present embodiment is a rod-shaped member extending linearly, and is formed in a columnar shape. The liquid absorbent core 2 is used by being inserted into the container 1 from the mouth 5 of the container 1 as described above. At this time, as shown in FIGS. 2 and 3, the outer wall surface 2 a of the liquid absorbent core 2 is in contact with or substantially in contact with the inner wall surface of the mouth 5 of the container 1 (the inner wall surface 4 a of the inner plug 4). Is inserted into the mouth 5 (the inner plug 4). As shown in the figure, the axial length of the absorbent core 2 is such that when the lower end portion 21 of the absorbent core 2 contacts the bottom surface 111 of the container 1, the upper end portion 22 of the absorbent core 2 is in contact with the bottom surface 111. Preferably, the length is set to protrude from the mouth 5. When the lower end portion 21 of the liquid absorbent core 2 is in contact with the bottom surface 111 of the container 1 during use, the liquid absorbent core 2 easily sucks up the liquid chemical even when the remaining amount of the liquid chemical is small, and the liquid chemical is used up. Because it can be.

  As shown in FIG. 4, a slit 25 extending in the axial direction is formed on the outer wall surface 2a of the liquid absorbent core 2 according to the present embodiment. The slit 25 serves as an air hole for communicating the inside and outside of the container 1 between the outer wall surface 2a of the liquid absorbent core 2 and the inner wall surface of the mouth portion 5 in a state where the liquid absorbent core 2 is inserted into the container 1. Function. That is, since air can enter and exit the container 1 through the slit 25, a significant pressure difference between the inside and the outside of the container 1 is unlikely to occur even when the liquid absorbent core 2 is inserted into the container 1. . This makes it difficult for the pressure in the container 1 to be excessively increased even when the temperature of the surrounding environment rises, and it is possible to prevent the chemical solution from being drawn up excessively along the liquid absorbent core 2 and sometimes being ejected.

  Further, the above slit 25 also functions as a return route of the chemical solution into the container 1. In other words, although the suction amount of the chemical is suppressed by the above-described pressure adjusting function of the slit 25, the chemical that has risen along the liquid absorbent core 2 may seep out of the liquid absorbent core 2 to a considerable extent. However, such a chemical solution overflowing outside the container 1 can return to the inside of the container 1 again through the slit 25 connecting the inside and the outside of the container 1.

  As shown in FIG. 4, the slit 25 according to the present embodiment is formed over the entire liquid absorbent core 2 in the axial direction. As a result, the chemical solution that has entered the slit 25 can easily return to the lower end portion 21 of the liquid absorbent core 2 along the slit 25. In particular, when the lower end portion 21 of the liquid absorbent core 2 is in contact with the bottom surface 111 of the container 1, it is possible to easily return to the bottom surface 111 of the container 1. However, the slit 25 does not necessarily need to be formed over the entire liquid absorbing core 2 in the axial direction. However, from the viewpoint of efficiently exhibiting the return route function of the chemical solution, the lower end of the slit 25 extends to the lower end edge of the mouth 5 of the container 1 in the use state in which the liquid absorbent core 2 is inserted into the container 1. Is preferred. In other words, the lower end of the slit 25 preferably extends to the lower edge of the inner plug 4, and more preferably extends to the lower edge of the neck 12 thereunder. In the same state, the upper end of the slit 25 preferably extends to the upper end edge of the mouth 5 of the container 1. In other words, the upper end of the slit 25 preferably extends to the upper end edge of the inner plug 4 described later.

  Further, it is preferable that the slit 25 has a small size such that the liquid medicine does not spill through the slit 25 even when the container 1 shakes or falls. Specifically, in consideration of the pressure adjustment function, the return route function of the chemical solution, the function of preventing the spilling of the chemical solution at the time of falling, etc., the size w1 of the slit 25 is 0.5 mm ≦ w1 ≦ 3.0 mm. Preferably, 0.8 mm ≦ w1 ≦ 2.0 mm, more preferably 1.0 mm ≦ w1 ≦ 1.7 mm. Note that the size w1 referred to here is the outer wall surface 2a (before forming the slit 25) along the normal direction of the outer wall surface 2a (before forming the slit 25) in the cross-sectional view of the liquid absorbent core 2. Is the distance from to the deepest part of the slit 25 (see FIG. 5).

  As shown in FIG. 5, in the present embodiment, a plurality of slits 25 are formed. In this case, at least one slit 25 can function as a return route for the chemical solution, and another at least one slit 25 can function as an air passage. It is difficult for the chemical solution to return to the inside of the container 1 unless air escapes from the inside of the container 1. However, in the present embodiment, since the plurality of slits 25 are formed, the return route for the chemical solution and the route for venting the air are separately established, and the chemical solution can quickly return into the container 1. Note that, in order to more effectively realize the role sharing of the slits 25, as shown in FIG. 5, in the present embodiment, the slits 25 are formed to have different sizes. Further, it is preferable that these slits 25 are arranged at equal intervals along the circumferential direction of the liquid absorbent core 2. In the present embodiment in which two slits 25 are formed, these slits 25 are arranged at positions 180 ° apart in the circumferential direction of the liquid absorbent core 2.

  The material constituting the liquid absorbing core 2 is not particularly limited as long as it is a material that can suck up the chemical solution and volatilize the sucked chemical solution into the external space. For example, various materials such as nylon, polyethylene terephthalate, polypropylene, polyethylene, polyoxymethylene, isoparaffin, rattan, and cellulose can be used as the material of the liquid absorbent core 2. Further, the liquid absorbent core 2 is preferably made of a material that does not swell when impregnated with a chemical solution so that the slit 25 is not filled by deformation.

  As a particularly preferred example, a material formed of a material containing polyester and / or nylon can be used as the material of the liquid absorbent core 2. When the liquid absorbent core 2 made of a material containing polyester and / or nylon is used as described above, it is possible to suppress the deformation of the liquid absorbent core 2 at a high temperature and to stably maintain its shape. Become.

  The type of polyester used as the material of the liquid absorbent core 2 is not particularly limited, and examples thereof include polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate. These polyesters may be used alone or in a combination of two or more. Among these polyesters, polyethylene terephthalate is preferably used from the viewpoint of more effectively suppressing the deformation of the liquid absorbent core 2 at a high temperature.

  Further, the kind of nylon used as the material of the liquid absorbent core 2 is not particularly limited, and examples thereof include nylon 6, nylon 6,6, and nylon 4,6. These nylons may be used alone or in a combination of two or more.

  The liquid absorbent core 2 may be used alone by selecting one from polyester and nylon, or may be used in combination of two or more of these.

  The content of the polyester and / or nylon in the material forming the absorbent core 2 is, for example, 10% by weight or more, preferably 30 to 100% by weight, more preferably 50 to 100% by weight, and further preferably 70 to 100% by weight. %, Particularly preferably 80 to 100% by weight, most preferably 90 to 100% by weight.

  The liquid absorbing core 2 may include, as necessary, other resin materials such as polyolefin such as polyethylene and polypropylene; acrylic; vinylon; and polyurethane in addition to polyester and / or nylon. However, since the polyolefin can cause deformation of the liquid absorbent core 2 at a high temperature, the liquid absorbent core 2 preferably has a low content of polyolefin, and more preferably contains substantially no polyolefin. Specifically, the content of the polyolefin in the material forming the liquid absorbent core 2 is usually 50% by weight or less, preferably 30% by weight or less, and more preferably 0% by weight.

  The liquid absorbing core 2 is formed by welding or bonding fibrous polyester and / or nylon into a predetermined shape, or fibrous polyester and / or nylon, for example, so that the liquid chemical in the container 1 can be sucked up. It may be knitted into a predetermined shape, nonwoven fabric made of polyester and / or nylon into a predetermined shape, polyester and / or nylon formed into a sponge-like shape, and the like.

<4. Container>
As shown in FIGS. 2 and 3, the container 1 includes a body 11 and a neck 12 connected to an upper portion of the body 11, and these are integrally formed. The body 11 has a bottom surface 111, a side surface 112 rising from the bottom surface 111, and an upper surface 113 which is continuous with the upper end edge of the side surface 112 and extends so as to face the bottom surface 111. A space S1 surrounded by the bottom surface 111, the side surface 112, and the upper surface 113 is formed in the body portion 11, and a chemical solution is stored therein. Hereinafter, the space S1 is referred to as a liquid space S1.

  The neck portion 12 is formed in a cylindrical shape, and particularly in the present embodiment, is formed in a cylindrical shape. The inner wall surface 12a of the neck portion 12 defines a passage connecting the liquid space S1 and the external space. The neck 12 extends upward from near the center of the upper surface 113 of the body 11 and has a smaller diameter than the body 11. As a result, the upper surface 113 of the body 11 forms a shoulder. Therefore, the upper surface 113 of the trunk 11 may be hereinafter referred to as a shoulder 113. In addition, the trunk | drum 11 which concerns on this embodiment is a substantially rectangular parallelepiped shape wide in the left-right direction and narrow in the front-back direction as shown. The shoulder 113 is continuous with the lower edge of the neck 12.

  A helical male screw 14 is formed on the outer wall surface 12 b of the neck 12. The male screw 14 is screwed with a female screw (not shown) of the cap 3, and the cap 3 is detachably fixed to the neck 12 by these screws.

  The material forming the container 1 is a resin in the present embodiment, but is not limited to this example, and may be, for example, glass. It is preferable to select a transparent or translucent material from the viewpoint of making the remaining amount of the chemical solution visible. In the present embodiment, the container 1 is manufactured by using a manufacturing method by blow molding described later. Therefore, on the lower surface 113 a of the shoulder portion 113, near the lower end edge of the neck portion 12, a meat reservoir 15 made of a material constituting the container 1 is formed. The meat reservoir 15 is formed in an annular shape so as to surround the lower edge of the neck 12. However, the meat reservoir 15 has an uneven surface shape with a variation in height and thickness in the circumferential direction. On the other hand, the inner wall surface 12a of the neck portion 12 does not have a wall formed of the material constituting the container 1, and the inner wall surface 12a has a smooth curved surface.

<5. Inner stopper>
The inner plug 4 is a cylindrical member fitted into the neck 12 of the container 1, and in the present embodiment, is a cylindrical member. The inner wall surface 4a of the inner plug 4 defines a passage S2 for communicating the liquid space S1 with the external space, and the liquid absorbent core 2 is inserted into the passage S2 in order to suck up the chemical from the liquid space S1.

  FIG. 6 is a cross-sectional view of the mounting structure of the neck portion 12, the liquid absorbent core 2, and the inner plug 4. As shown in FIG. 2, the inner plug 4 has a main body portion 41 at the upper and lower centers, an upper portion 42 continuing to the upper end of the main body portion 41, and a lower portion 43 continuing to the lower end of the main body portion 41. The outer diameter of the main body 41 is substantially equal to the inner diameter of the neck 12, whereby the inner plug 4 is pressed into the neck 12 and firmly fixed. The upper portion 42 of the inner plug 4 includes a flange portion projecting radially outward from the main body portion 41. Therefore, the inner plug 4 can be inserted into the neck 12 from the lower portion 43 until the flange abuts on the upper edge of the neck 12. The outer diameter of the lower portion 43 is slightly smaller than the inner diameter of the neck portion 12, and the outer wall surface of the lower portion 43 forms a space between itself and the inner wall surface 12 a of the neck portion 12.

  The lower portion 43 of the inner plug 4 is configured to increase in diameter as the passage S2 goes downward. In the present embodiment, the inner wall surface 4a of the lower portion 43 is formed as an enlarged surface B1 for continuously increasing the diameter of the passage S2. In particular, the enlarged surface B1 is linear in a longitudinal sectional view, and linearly expands the diameter of the passage S2. In addition, when the angle between the enlarged diameter surface B1 and the central axis of the inner plug 4 is θ1 in a vertical cross-sectional view, θ1 is preferably an acute angle, more preferably 5 ° ≦ θ1 ≦ 75 °, More preferably, 10 ° ≦ θ1 ≦ 45 °. In the present embodiment, the enlarged surface B1 is formed over the entire circumferential direction.

  On the other hand, the upper portion 42 of the inner plug 4 is configured so that the diameter increases as the passage S2 moves upward. In the present embodiment, the inner wall surface 4a of the upper portion 42 includes an enlarged surface B2 for continuously increasing the diameter of the passage S2. In particular, the enlarged diameter surface B2 is linear in a longitudinal sectional view, and linearly expands the diameter of the passage S2. In addition, when the angle between the enlarged diameter surface B2 and the central axis of the inner plug 4 in the vertical cross section is defined as θ2, θ2 is preferably an acute angle, more preferably 5 ° ≦ θ2 ≦ 75 °, More preferably, 10 ° ≦ θ2 ≦ 45 °. In the present embodiment, the enlarged diameter surface B2 is formed over the entire circumferential direction.

  The upper portion 42 of the inner plug 4 configured as described above forms a dish portion 45 that opens upward around the liquid absorbent core 2 in a state where the liquid absorbent core 2 is inserted into the passage S2. The dish portion 45 is sucked up from the liquid space S <b> 1 by the liquid absorbent core 2, and serves as a tray for receiving the chemical solution oozing out of the liquid absorbent core 2 outside the container 1. This prevents the chemical solution from spilling along the outer wall and the like of the container 1. In addition, since the dish portion 45 defines a space of an inverted truncated cone shape that narrows downward, the positioning of the liquid absorbent core 2 becomes easy when the liquid absorbent core 2 is inserted into the inner stopper 4.

  In the present embodiment, the cross-sectional diameter of the passage S2 at the position of the main body 41 is substantially equal to the cross-sectional diameter of the liquid absorbent core 2. Therefore, the liquid absorbent core 2 is press-fitted into the inner plug 4 and is firmly supported. When the liquid absorbent core 2 is press-fitted into the inner plug 4, the outer wall surface 2a of the liquid absorbent core 2 and the inner wall surface 4a of the inner plug 4 are in contact with or substantially in contact with each other. Therefore, a gap along the circumferential direction is not substantially formed between the outer wall surface 2a of the liquid absorbent core 2 and the inner wall surface 4a of the inner plug 4. However, as described above, the slit 25 is formed on the outer wall surface 2a of the liquid absorbent core 2. Therefore, these slits 25 form an air hole between the outer wall surface 2a of the liquid absorbent core 2 and the inner wall surface 4a of the inner plug 4 to communicate the liquid space S1 with the outer space.

  In the present embodiment, a groove 46 extending in the up-down direction is formed on the inner wall surface 4 a of the inner plug 4. The groove 46 also forms an air hole between the outer wall surface 2a of the liquid absorbent core 2 and the inner wall surface 4a of the inner plug 4 when the liquid absorbent core 2 is inserted into the passage S2. However, the groove 46 does not reach the lower portion 43 of the inner plug 4, and it is difficult to function as a return route of the chemical solution like the slit 25. However, the groove 46 can effectively function as an air passage that can pass through the inside of the liquid absorbent core 2. Although one such groove 46 is formed in the present embodiment, a plurality of such grooves may be formed.

  The material constituting the container 1 is a resin in the present embodiment, and more specifically, polyethylene terephthalate. However, any material can be selected as long as the inner plug 4 can perform the above-described function.

<6. How to use chemical vaporizer>
Hereinafter, a method of using the chemical liquid vaporizer 100 will be described. First, before the start of use, a cap 3 is attached to the mouth portion 5 of the container 1, and the liquid absorbent core 2, and eventually the chemical solution, is substantially sealed from the external space. Therefore, in many cases, the chemical liquid leaked out of the container 1 via the liquid absorbent core 2 cannot volatilize into the external space, but remains in the closed space inside the cap 3.

  Therefore, at the start of use, the cap 3 is removed with the bottom surface 111 of the container 1 facing down and the cap 3 facing upward so that the chemical liquid accumulated in the cap 3 does not spill. As a result, the chemical solution in the cap 3 is received in the above-described dish portion 45 formed around the liquid absorbent core 2.

  Even after the cap 3 is opened, the chemical liquid evaporator 100 is installed with the bottom surface 111 kept down and the liquid absorbent core 2 kept up. As a method of installation, for example, a method of placing the bottom surface 111 on a table or a method of suspending the bottom surface is also conceivable.

  When installed as described above, the chemical solution stored in the dish portion 45 drops toward the liquid space S1 by gravity along at least one slit 25 of the liquid absorbent core 2. Then, when reaching the lower part 43 of the inner plug 4, the inner wall surface 4 a of the inner plug 4 is expanded, so that the return route of the chemical solution is also expanded. Therefore, the function of the surface tension of the chemical solution that has moved in the narrow space is weakened by the diameter expansion, and the chemical solution is formed in the narrow space formed around the liquid absorbing core 2 and surrounded by the inner plug 4 and the neck 12. Clogging hardly occurs. Therefore, the chemical liquid can quickly return to the liquid space S1. In particular, in the present embodiment, since the enlarged diameter surface B1 forms a downwardly inclined surface, the chemical solution can flow so as to slide along the inclined surface. In addition, the flow rate of the chemical solution increases near the lower portion 43 of the inner plug 4 due to the diameter increase of the return route of the chemical solution, and the chemical solution quickly returns to the liquid space S1. Then, at this time, the air in the liquid space S1 can flow out to the outside mainly through the remaining slits 25 and the grooves 46. Therefore, the return of the chemical solution is not hindered by the inability of the air to escape. As described above, waste of the chemical solution is prevented.

  In a steady state after the chemical solution stored in the plate portion 45 returns to the liquid space S1, the slits 25 and the grooves 46 function as air passages for adjusting the pressure inside and outside the container 1. Not only at the start of use but also due to a rise in the pressure in the container 1 due to a rise in the temperature of the surrounding environment or the like, a large amount of the chemical solution may be sucked into the liquid absorbent core 2. Also in such a case, the above-described return route of the chemical solution can similarly exhibit its function.

  After the cap 3 is opened, the functional components contained in the chemical solution volatilize continuously from the liquid absorbent core 2 to the external space. Thereby, the space where the chemical liquid vaporizer 100 is installed can be made a comfortable space.

<7. Manufacturing method of container>
Hereinafter, a method for manufacturing the container 1 will be described. Here, the method of manufacturing the container 1 is a preferred example, and other methods can be adopted.

  In the present embodiment, the container 1 is manufactured by blow molding. 7A to 7D are diagrams illustrating the manufacturing process. First, as shown in FIG. 7A, a cylindrical parison 71 is extruded downward from a die 70. Then, the pair of containers 72 and 73 receive the parison 71 from both sides so as to sandwich the parison 71 (see FIG. 7B). At this time, the lower portions 72a and 73a of the molding dies 72 and 73 come into contact with each other to form a flat plate without an opening, but the upper portions 72b and 73b face each other to form a flat plate having an opening at the center. Then, the parison 71 is inserted into the central opening. Thereafter, the blow nozzle 74 enters the inside of the parison 71 located in the molds 72 and 73. At this time, the blow nozzle 74 is inserted into the molding dies 72 and 73 from above through the central opening of the flat plate formed by combining the upper portions 72b and 73b (see FIG. 7C). The outer diameter of the blow nozzle 74 is cylindrical. At this time, the tip 74a of the blow nozzle 74 is located at a position corresponding to the lower edge of the neck 12 of the container 1 in the molding dies 72, 73, in other words, lower than the lower edges of the upper portions 72b, 73b of the molding dies 72, 73. It is inserted to a deep position.

  Then, in the state of FIG. 7C, high-pressure air is blown from the air ejection port of the blow nozzle 74. As a result, the parison 71 is pressed against the inner walls of the molds 72 and 73, and molded into the shape of the container 1 (see FIG. 7D). At this time, the front end 74 a of the blow nozzle 74 exists below the lower edge of the neck 12 of the container 1, in other words, the entire inner wall surface 12 a of the neck 12 faces the outer peripheral surface of the blow nozzle 74. In addition, no pocket is formed on the inner wall surface 12a of the neck portion 12. On the other hand, on the lower surface 113a of the shoulder portion 113 of the container 1 and near the neck portion 12, an annular meat reservoir 15 is formed.

  Then, the container 1 is released from the molds 72 and 73 after the container 1 in the molds 72 and 73 is cooled. Thereby, the container 1 is manufactured.

<8. Modification>
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said Embodiment, A various change is possible unless it deviates from the meaning. For example, the following changes are possible. Further, the gist of the following modified examples can be appropriately combined.

<8-1>
When an air hole for communicating the liquid space S1 with the external space is separately provided by the slit 25 or the like, the groove 46 can be omitted. Alternatively, the groove 46 can be configured to reach the lower portion 43 of the inner plug 4. However, in this case, when the circumferential positions of the groove 46 and the slit 25 match, depending on the size of the two openings, a relatively large opening is formed by the combination of the two openings, and the container 1 shakes. Also, unexpected liquid leakage may occur at the time of falling. Therefore, when forming both the slit 25 and the groove 46 reaching the lower part 43 of the inner plug 4, it is preferable to adjust the size of both openings. Alternatively, the slits 25 can be omitted after the groove 46 is configured to reach the lower portion 43 of the inner plug 4.

<8-2>
In the above-described embodiment, the diameter of the passage S2 is continuously and linearly increased as it goes downward. However, the diameter may be increased stepwise as the enlarged surface B1 goes downward (see FIG. 8A), or it may be enlarged. The surface B1 may be curved in a longitudinal sectional view. Further, a surface whose diameter increases as it goes downward and a surface which does not increase its diameter can be combined (see FIG. 8B). The same applies to the upper enlarged surface B2.

<8-3>
The inner plug 4 can be omitted, and the liquid absorbent core 2 can be inserted into the passage defined by the inner wall surface 12a of the neck portion 12. In this case, the outer wall surface 2a of the liquid absorbent core 2 is configured to contact or substantially contact the inner wall surface 12a of the neck portion 12. Then, between the outer wall surface 2a of the liquid absorbent core 2 and the inner wall surface 12a of the neck portion 12, an air hole for communicating the liquid space S1 with the outer space is secured. Further, similarly to the lower portion 43 of the inner plug 4, the lower end of the neck portion 12 is configured such that the diameter increases as the passage in the neck portion 12 moves downward. Also in the case of the above configuration, the chemical solution can be quickly returned to the liquid space S1 as in the above embodiment.
<8-4>
The dish part 45 can be comprised by the inner plug 4 and the neck part 12, as shown in FIG. When the inner plug 4 is omitted as in Modification Example 8-3, a dish 45 having the same shape as that formed on the inner plug 4 can be formed on the upper portion of the neck 12.

<8-5>
In the above embodiment, the enlarged diameter surface B1 is formed over the entire circumferential direction, but may be formed partially on the circumferential direction. If the enlarged diameter surface B1 is formed at least at the same position in the circumferential direction as the air hole (slit 25) communicating the liquid space S1 and the external space, the return route of the above-described chemical solution can be enlarged. . Similarly, the dish portion 45 can be formed not in the entire circumferential direction but in a part in the circumferential direction.

REFERENCE SIGNS LIST 100 Chemical vaporizer 1 Container 11 Body 113 Shoulder 113a Lower surface 12 of shoulder 12 Neck 12a Inner wall 2 Liquid absorbing core 2a Outer wall 25 Slit (air hole)
4 Inner plug 4a Inner wall surface 42 Upper part 43 Lower part 45 Dish part 70 Die 71 Parison 72, 73 Mold 74 Blow nozzle B1 Enlarged surface S1 Liquid space S2 Passage

Claims (10)

A chemical vaporizer that volatilizes the chemical,
A body having a liquid space in which the chemical solution is stored, and a container including a neck formed in a tubular shape so as to communicate with the liquid space and extending upward from the body.
A tubular plug having an inner wall surface that is fitted into the neck portion and defines a passage communicating the liquid space and the external space,
Having an outer wall surface, in such a manner that the outer wall surface is in contact with or substantially in contact with the inner wall surface of the inner plug, and a liquid absorbing core inserted into the liquid space through the passage to suck up the chemical liquid. Prepare
In a state where the liquid absorbent core is inserted into the liquid space via the passage, between the outer wall surface of the liquid absorbent core and the inner wall surface of the inner plug, the liquid space and the external space are Air holes are formed to communicate
The lower portion of the inner plug is configured to increase in diameter as the passage goes downward,
Chemical vaporizer. The inner wall surface at the lower portion of the inner plug includes an enlarged surface that continuously enlarges the passage.
The chemical vaporizer according to claim 1. The expanding surface linearly increases the diameter of the passage in a longitudinal sectional view,
The chemical vaporizer according to claim 2. When the angle between the enlarged surface and the central axis of the inner plug is defined as θ in a longitudinal sectional view, 5 ° ≦ θ ≦ 75 °,
The chemical vaporizer according to claim 3. The inner wall surface at the lower portion of the inner plug includes an enlarged surface that enlarges the passage in a stepped manner.
The chemical vaporizer according to claim 1. In a state in which the liquid absorbent core is inserted into the liquid space through the passage, at least one of an upper part of the neck and an upper part of the inner plug is opened upward around the liquid absorbent core. A dish portion is formed,
The chemical vaporizer according to any one of claims 1 to 5. A chemical vaporizer that volatilizes the chemical,
A body portion having a liquid space in which the chemical solution is stored, and a neck portion formed in a cylindrical shape having an inner wall surface defining a passage communicating the liquid space with the external space, and extending upward from the body portion. Containing container,
A liquid absorbing core inserted into the liquid space through the passage to suck up the chemical liquid, in a manner such that the outer wall surface has an outer wall surface that contacts or substantially contacts the inner wall surface of the neck portion. ,
In a state in which the liquid absorbent core is inserted into the liquid space via the passage, between the outer wall surface of the liquid absorbent core and the inner wall surface of the neck portion, the liquid space and the external space are separated from each other. Air holes to communicate are formed,
The lower portion of the neck is configured to increase in diameter as the passage goes downward,
Chemical vaporizer. Wherein in a state where the wick is inserted into the liquid space through the passage, in the vicinity of the upper portion of the neck, pan that opens upward around the wick is formed,
The chemical vaporizer according to claim 7 . The trunk has a shoulder continuous with a lower edge of the neck,
On the lower surface of the shoulder, near the lower edge of the neck, a meat reservoir made of a material constituting the container is formed.
The chemical vaporizer according to any one of claims 1 to 8 . It is a manufacturing method of the container used for the chemical vaporizer according to any one of claims 1 to 9 ,
Extruding a cylindrical parison from the die;
Receiving the parison in a mold of the container;
Inserting a blow nozzle from the side of the parison corresponding to the neck, inside the parison in the mold;
Molding the container by blowing air from the blow nozzle and pressing the parison against the inner wall of the mold.
In the step of inserting the blow nozzle, the tip of the blow nozzle is inserted to a position deeper than a position corresponding to a lower edge of the neck in the mold.
Container manufacturing method.