Volatilization device

Abstract

To provide a volatilization device that can almost volatilize a chemical solution which is not completely used and left on a bottom part of a container.SOLUTION: A volatilization device 10 has a container 20 and a liquid absorption core 50. The container 20 has a cylindrical body part 24 and a bottom part 22 which closes one end of the body part 24 in an axial direction, and houses a chemical solution. The liquid absorption core 50 has a lower end 52 which is arranged on the bottom part 22 in a sticking state, and is arranged in the container while a part of a lower end part is immersed in a chemical solution . The bottom part 22 of the container 20 has: an outer peripheral part 4 which is continuously formed inside one end of the body part 24; a central part 2 which is positioned on the other end side in the axial direction from the outer peripheral part 4 inside the outer peripheral part 4; and a guide groove part 6 which is inclined from the central part 2 toward the outer peripheral part 4. The guide groove part 6 functions so as to slide the lower end 52, which abuts the central part 2 by insertion of the liquid absorption core 50 into the container 20, guide the lower end to the outer peripheral part 4, and arrange the lower end 52 on the outer peripheral part 4.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a volatilization device that volatilizes a chemical solution such as a fragrance or a deodorant, for example.

Background Art

[0002] The volatilization device has, for example, a container that stores a chemical solution, a liquid absorption core that has its lower end immersed in the chemical solution and is disposed in the container, and a volatilization body that is impregnated with the chemical solution sucked up from the container by the liquid absorption core and volatilizes it.

[0003] In this type of volatilization device, in order to use up the chemical solution stored in the container without waste, there is one in which a concavo-convex structure is provided at the bottom of the container. As the concavo-convex structure, for example, a structure is known in which a recess for disposing the lower end of the liquid absorption core is provided at the center of the bottom bulging upward, and a plurality of flow paths connecting the recess and the outer peripheral portion of the bottom are provided. When this container is used, a part of the chemical solution remaining at the outer peripheral portion finally flows into the recess through the plurality of flow paths and can be sucked up by the liquid absorption core.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the above-described conventional volatilization device, since the recess at the center of the bottom of the container is located above the outer peripheral portion in order to be stably installed, a small amount of the chemical solution remains at the outer peripheral portion of the bottom.

[0006] The present invention has been made in view of the above points, and an object thereof is to provide a volatilization device that can substantially eliminate the chemical solution remaining at the bottom of the container.

Means for Solving the Problems

[0007] One aspect of the volatilization device of the present invention includes a container and a liquid absorption core. The container has a cylindrical peripheral portion and a bottom portion that closes one axial end of the peripheral portion, and stores a chemical solution. The liquid absorption core has a lower end disposed against the bottom portion, and a part of the lower end side is immersed in the chemical solution and disposed inside the container. The bottom portion of the container has an outer peripheral portion continuous inside one end of the peripheral portion, a central portion located on the other axial end side of the outer peripheral portion inside the outer peripheral portion, and a guide groove portion inclined from the central portion toward the outer peripheral portion. The guide groove portion functions to guide the lower end that comes into contact with the central portion by inserting the liquid absorption core into the container in sliding contact to the outer peripheral portion and dispose the lower end on the outer peripheral portion.

Effects of the Invention

[0008] According to one aspect of the present invention, it is possible to provide a volatilization device that can substantially eliminate the chemical solution remaining at the bottom of the container.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

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Figure 10

Embodiments for Carrying out the Invention

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. (First Embodiment) As shown in FIG. 1, the volatilization device 10 according to the first embodiment of the present invention includes a container 20, a lid 30, a middle stopper 40, a liquid absorption core 50, and a volatilizer 60. FIG. 1 is a front view of the volatilization device 10 as viewed from the front, FIG. 2 is a side view of the container 20 of the volatilization device 10 in FIG. 1 as viewed from the direction of arrow F2 (left direction in the figure), FIG. 3 is a plan view of the bottom 22 of the container 20 in FIG. 2 as viewed from above, and FIG. 4 is a perspective view showing the concavo-convex structure of the bottom 22.

[0011] The container 20 has a bottom 22 having a substantially elliptical outer shape, a substantially elliptical cylindrical body portion 24 (circumferential portion) continuous with the outer periphery of the bottom 22, a substantially cylindrical neck portion 26, and a shoulder portion 28 having a shape converging from the upper end of the body portion 24 toward the lower end of the neck portion 26. The container 20 is integrally formed of resin with the bottom 22, the body portion 24, the neck portion 26, and the shoulder portion 28. The container 20 can be manufactured by blow molding such as direct blow molding or injection blow molding, for example. The container 20 can be manufactured by polyethylene terephthalate (PET), for example. The container 20 stores chemical liquids such as fragrances and deodorants.

[0012] At the upper end of the neck portion 26 of the container 20, there is a substantially circular opening 26a for injecting the chemical liquid. A male screw 26b is provided on the outer peripheral surface of the neck portion 26. A female screw of a cap (not shown) can be screwed onto the male screw 26b of the neck portion 26 so that the opening 26a can be sealed with the cap. At the time of shipment of the volatilization device 10, the middle stopper 40 is attached to the opening 26a of the container 20 containing the chemical liquid, the liquid absorption core 50 is inserted through the middle stopper 40 and immersed in the chemical liquid, and the opening 26a is closed with a cap to seal the container 20.

[0013] The middle plug 40 has an annular upper wall portion 42 that covers the edge of the opening 26a of the neck portion 26 from above, a cylindrical tube portion 44 that hangs down from the lower surface of the upper wall portion 42 and is arranged along the inner peripheral surface of the neck portion 26, a tube portion 46 that inserts and holds the liquid absorption core 50, and a liquid receiving portion 48 provided between the upper end edge of the tube portion 46 and the inner peripheral edge of the upper wall portion 42. The tube portion 46 and the liquid receiving portion 48 are coaxially arranged inside the tube portion 44. A ventilation hole 49 is provided through the liquid receiving portion 48. The middle plug 40 having the upper wall portion 42, the tube portion 44, the tube portion 46, and the liquid receiving portion 48 is formed, for example, by integral molding of resin.

[0014] The middle plug 40 is attached to the container 20 by fitting the tube portion 44 into the opening 26a of the container 20. With the middle plug 40 attached to the opening 26a, the lower surface of the upper wall portion 42 of the middle plug 40 abuts against the edge of the opening 26a of the neck portion 26. Thus, after attaching the middle plug 40 to the container 20, the liquid absorption core 50 is inserted into the tube portion 46.

[0015] The lower end 52 of the liquid absorption core 50 inserted into the tube portion 46 is guided by the guide groove portion 6 and arranged at the holding portion 8 on the outer peripheral portion 4 of the bottom portion 22 of the container 20 as will be described later. The liquid absorption core 50 is curved toward the rear of the container 20 as shown by the dashed line in FIG. 2 with the lower end 52 arranged at the holding portion 8, and the upper end 54 protrudes above the upper wall portion 42 of the middle plug 40. In the present embodiment, the guide groove portion 6 is provided in the short axis direction of the elliptical bottom portion 22 toward the rear of the container 20, and the curvature of the liquid absorption core 50 with the lower end 52 arranged at the holding portion 8 is minimized.

[0016] The tube portion 46 of the middle plug 40 extends coaxially with the central axis C of the volatilization device 10 (that is, the central axis C of the container 20) in the illustrated state where the middle plug 40 is attached to the neck portion 26 of the container 20. The inner diameter of the tube portion 46 is larger than the outer diameter of the liquid absorption core 50. That is, with the liquid absorption core 50 inserted into the tube portion 46, there is a slight gap (play) between the outer peripheral surface of the liquid absorption core 50 and the inner peripheral surface of the tube portion 46.

[0017] The liquid absorption core 50 is formed into a rod shape with a substantially circular cross-section by a material capable of sucking up the chemical solution, such as felt, a rod-shaped synthetic resin molded body having a plurality of linear grooves formed on its surface, a synthetic fiber bundle, a natural fiber bundle, a porous material such as a foamed synthetic resin, or a material mixed with one or more of these porous materials. When the volatilization device 10 is in use, the upper end 54 of the liquid absorption core 50 contacts the lower surface 62 of the volatilizer 60. The liquid absorption core 50 sucks up the chemical solution contained in the container 20 and guides it to the volatilizer 60. The volatilizer 60 impregnates and volatilizes the chemical solution sucked up by the liquid absorption core 50.

[0018] The lid body 30 integrally has a peripheral wall 32 whose cross-sectional shape perpendicular to the central axis C is substantially the same as that of the body portion 24 of the container 20, and a top wall 34 closing the upper end of the peripheral wall 32. That is, the peripheral wall 32 is substantially elliptical cylindrical, and the top wall 34 is substantially elliptical plate-shaped. The outer peripheral edge of the top wall 34 is connected to the upper end edge of the peripheral wall 32. At least one of the peripheral wall 32 and the top wall 34 has at least one volatilization hole 33 for volatilizing the chemical solution.

[0019] On the inner peripheral surface of the peripheral wall 32, a plurality of support protrusions (not shown) for supporting the lower surface 62 of the volatilizer 60 with the upper surface 64 of the volatilizer 60 facing the inner surface 34a (illustrated lower surface) of the top wall 34 are integrally protruded. The volatilizer 60 is supported by the plurality of support protrusions in a state before the lid body 30 is attached to the container 20, and in a state where the lid body 30 is attached to the container 20 (the state shown in FIG. 1), it is supported by the upper end 54 of the liquid absorption core 50 and is slightly separated upward from the plurality of support protrusions. In this state, the liquid absorption core 50 supports substantially the entire weight of the volatilizer 60 from below.

[0020] The volatilizer 60 has a size and shape that overlap all the support protrusions with respect to the gravitational direction, and is formed into a substantially elliptical plate shape having a certain thickness (for example, a thickness of about 1 mm to 50 mm). The volatilizer 60 absorbs, impregnates, and supports the chemical solution sucked up by the liquid absorption core 50, and volatilizes the chemical solution from its surface into the air. The volatilizer 60 is formed of a material capable of sucking the chemical solution by contacting the chemical solution, such as papers such as natural paper and synthetic paper, or porous materials such as felt, synthetic fiber bundle, natural fiber bundle, and foamed synthetic resin.

[0021] As shown in FIGS. 3 and 4, the bottom 22 of the container 20 has an uneven structure. The uneven structure of the bottom 22 includes a central portion 2 through which the central axis C of the volatilization device 10 passes, an outer peripheral portion 4 continuous inside the lower end of the body portion 24, a ridge portion 3 between the central portion 2 and the outer peripheral portion 4, a guide groove portion 6 inclined from the central portion 2 toward the outer peripheral portion 4, and a holding portion 8 located at the position where the guide groove portion 6 and the outer peripheral portion 4 merge. The edge of the guide groove portion 6 is surrounded by a wall portion 5 including the ridge portion 3.

[0022] As described above, since the container 20 is manufactured by blow molding, the uneven structure of the bottom 22 appears on both the inner surface 22a and the outer surface 22b of the bottom 22. The upper surfaces of the central portion 2, the ridge portion 3, the outer peripheral portion 4, the wall portion 5, the guide groove portion 6, and the holding portion 8 constitute a single surface that smoothly connects as the surface in contact with the chemical solution, and this surface is the inner surface 22a of the bottom 22.

[0023] The central portion 2 is provided in a substantially circular region coaxial with the central axis C and is above the outer peripheral portion 4. The outer peripheral portion 4 is provided in an annular region connected to the lower end of the body portion 24. The bottom surface of the outer peripheral portion 4 is connected over the entire circumference of the outer peripheral portion 4 as the lowest surface of the inner surface 22a of the bottom 22. The central portion 2 is inside the outer peripheral portion 4. The bottom 22 between the central portion 2 and the outer peripheral portion 4 bulges upward toward the ridge portion 3. The guide groove portion 6 has a sliding contact surface 6a that smoothly continues to the bottom surface of the central portion 2. The sliding contact surface 6a is a part of the inner surface 22a of the bottom 22. The guide groove portion 6 is inclined downward from the central portion 2 toward the outer peripheral portion 4 (holding portion 8). The guide groove portion 6 has a converging shape from the central portion 2 toward the outer peripheral portion 4 (holding portion 8) when viewed from above (FIG. 3).

[0024] The ridge portion 3 between the central portion 2 and the outer peripheral portion 4 includes an arcuate raised portion between the central portion 2 and the outer peripheral portion 4, and extends to the holding portion 8 along the edge of the guide groove portion 6. That is, the ridge portion 3 is a part of the wall portion 5 that surrounds the periphery of the recess where the central portion 2 and the guide groove portion 6 are connected. The wall portion 5 is inclined downward from the central portion 2 toward the outer peripheral portion 4 (holding portion 8) following the inclination of the guide groove portion 6. The height of the wall portion 5 extending to the holding portion 8 gradually decreases from the central portion 2 toward the outer peripheral portion 4 so as to be zero at the holding portion 8. The bottom surface of the holding portion 8 is connected to the lowest surface of the outer peripheral portion 4, and there is no wall portion 5 separating the two.

[0025] The sliding contact surface 6a of the guide groove portion 6 surrounded by the wall portion 5 has a shape in which a line intersecting with an imaginary flat cross-section parallel to the central axis C passing through the central portion 2 and the outer peripheral portion 4 (holding portion 8) and a straight line connecting any two points on this line are inclined downward from the central portion 2 toward the outer peripheral portion 4. In other words, the sliding contact surface 6a is a surface in which all parts are inclined downward from the central portion 2 toward the outer peripheral portion 4. In the present embodiment, the sliding contact surface 6a is a surface having a shape in which the line where the imaginary cross-section intersects does not include a straight line portion.

[0026] The line where the sliding contact surface 6a intersects with the imaginary cross-section may include a straight line portion, but in order to slide the lower end 52 of the liquid absorption core 50, it is preferably a free curve. By gently inclining the sliding contact surface 6a, the lower end 52 of the liquid absorption core 50 inserted into the pipe portion 46 of the middle plug 40 slides downward in the direction of gravity while sliding in contact with the sliding contact surface 6a after contacting the bottom surface of the central portion 2, and moves to the holding portion 8 in the outer peripheral portion 4.

[0027] In FIG. 2, the state where the lower end 52 of the liquid absorption core 50 contacts the central portion 2 of the bottom portion 22 is shown by a dashed line, the state where the lower end 52 of the liquid absorption core 50 is sliding along the sliding contact surface 6a of the guide groove portion 6 is shown by a two-dot chain line, and the state where the lower end 52 of the liquid absorption core 50 is arranged at the holding portion 8 in the outer peripheral portion 4 is shown by a broken line. In this way, when the lower end 52 of the liquid absorption core 50 moves from the central portion 2 to the holding portion 8 along the guide groove portion 6, the curvature of the liquid absorption core 50 gradually increases.

[0028] Since the tube portion 46 of the stopper 40 attached to the opening 26a of the container 20 has play and the liquid absorption core 50 is inserted therethrough, the lower end 52 of the liquid absorption core 50 inserted through the tube portion 46 may contact a position slightly displaced outward from the center of the central portion 2 (the point through which the central axis C passes). In this case, since the wall portion 5 outside the central portion 2 has a surface inclined downward from the ridge portion 3 toward the center, the lower end 52 of the liquid absorption core 50 contacting the displaced position moves toward the center of the central portion 2.

[0029] Also, since the inclination of the sliding contact surface 6a of the guide groove portion 6 starts from a position including the center of the central portion 2 (the position through which the central axis C passes), the lower end 52 of the liquid absorption core 50 contacting the central portion 2 is directly received by the guide groove portion 6. Then, the lower end 52 of the liquid absorption core 50 slides on the downward-inclined sliding contact surface 6a of the guide groove portion 6 and moves to the holding portion 8 on the outer peripheral portion 4. At this time, since the chemical liquid is accommodated in the container 20, the chemical liquid functions as a lubricant between the sliding contact surface 6a and the lower end 52 of the liquid absorption core 50, reducing the friction between the two and making it easy to slide.

[0030] As described above, the liquid absorption core 50 has a length such that, in a state where it is inserted through the tube portion 46 of the stopper 40 and the lower end 52 is disposed at the holding portion 8 of the outer peripheral portion 4, the upper end 54 protrudes from the upper wall portion 42 of the stopper 40 by a predetermined protruding amount. The predetermined protruding amount here means that, in a state where the lower end 52 of the liquid absorption core 50 is disposed at the holding portion 8 as shown by the broken line in FIG. 2, when the lid body 30 holding the volatilizer 60 is attached to the container 20 (the state shown in FIG. 1), the upper end 54 of the liquid absorption core 50 contacts at least the lower surface 62 of the volatilizer 60.

[0031] As described above, according to the volatilization device 10 of the first embodiment, the lower end 52 of the liquid absorption core 50 can be disposed at the outer peripheral portion 4 at the lowermost end in the gravitational direction of the inner surface 22a of the bottom portion 22 of the container 20, and substantially all of the chemical liquid accommodated in the container 20 can be sucked up by the liquid absorption core 50 and used up without waste.

[0032] In addition, in the present embodiment, since the guide groove portion 6 is extended in the minor axis direction of the substantially elliptical bottom portion 22, the curvature of the liquid absorption core 50 can be minimized, the protrusion amount from the opening portion 26a at the upper end 54 of the liquid absorption core 50 can be easily controlled, and the upper end 54 of the liquid absorption core 50 can be surely brought into contact with the lower surface 62 of the volatilization body 60. Further, according to the present embodiment, the liquid absorption core 50 can be curved backward of the container 20, and in the state of FIG. 1 when the volatilization device 10 is viewed from the front, the liquid absorption core 50 can be seen straight in the vertical direction, improving the appearance.

[0033] In addition, by extending the guide groove portion 6 in the minor axis direction of the bottom portion 22, after the lower end 52 of the liquid absorption core 50 inserted into the container 20 contacts the central portion 2 of the bottom portion 22, the moving distance until it moves to the holding portion 8 on the outer peripheral portion 4 can be minimized, and the lower end 52 of the liquid absorption core 50 can be surely arranged in the holding portion 8.

[0034] (Second Embodiment) The volatilization device according to the second embodiment of the present invention has an uneven structure 70 as shown in FIG. 5 on the bottom portion 22 of the container 20. Each of the embodiments described below has substantially the same structure as the volatilization device 10 of the first embodiment described above, and only the uneven structure of the bottom portion 22 of the container 20 is different. Therefore, in the description of each of the following embodiments, only the uneven structure of the bottom portion 22 will be described, and the description of other structures will be omitted.

[0035] The uneven structure 70 has another guide groove portion 72 that is symmetric with respect to the major axis of the bottom portion 22 in addition to the guide groove portion 6 of the first embodiment described above. The guide groove portion 72 is a groove portion that gently connects to the central portion 2 and extends in the direction opposite to the guide groove portion 6.

[0036] When two guide groove portions 6 and 72 extending in the minor axis direction of the bottom portion 22 are provided as in the present embodiment, when the liquid absorption core 50 is inserted into the container 20, the lower end 52 of the liquid absorption core 50 that contacts the central portion 2 is received by either one of the guide groove portions 6 and 72 and moves to the outer peripheral portion 4. For this reason, the lower end 52 of the liquid absorption core 50 can be arranged on the outer peripheral portion 4, and the chemical solution can be used up without waste.

[0037] (Third Embodiment) The volatilization device according to the third embodiment of the present invention has an uneven structure 80 as shown in FIG. 6 at the bottom 22 of the container 20. The uneven structure 80 has four guide groove portions 81, 82, 83, 84 that radially extend from the central portion 2 toward the outer peripheral portion 4. The four guide groove portions 81 to 84 have the same shape.

[0038] Also in this embodiment, the lower end 52 of the liquid absorption core 50 that abuts on the central portion 2 of the bottom 22 can be guided to the outer peripheral portion 4, and the chemical liquid can be used up without waste.

[0039] (Fourth Embodiment) The volatilization device according to the fourth embodiment of the present invention has an uneven structure 90 as shown in FIG. 7 at the bottom 22 of the container 20. The uneven structure 90 has, in addition to the guide groove portion 6 of the uneven structure of the first embodiment, two protrusion portions 91, 92. The two protrusion portions 91, 92 each have a shape in which a part of the bottom 22 is raised upward. The two protrusion portions 91, 92 are arranged close to both circumferential sides of the holding portion 8 where the guide groove portion 6 joins the outer peripheral portion 4.

[0040] The two protrusion portions 91, 92 restrict the lower end 52 of the liquid absorption core 50 disposed in the holding portion 8 from moving in the circumferential direction of the bottom 22 along the outer peripheral portion 4. Thereby, the circumferential position of the holding portion 8 where the lower end 52 of the liquid absorption core 50 abuts on the inner surface 22a of the bottom 22 can be fixed, and it is easy to control the protruding amount of the upper end 54 of the liquid absorption core 50 to a desired value.

[0041] (Fifth Embodiment) The volatilization device according to the fifth embodiment of the present invention has a container 100 with a shape different from that of the container 20 of the volatilization device 10 of the first embodiment. Further, this volatilization device has a lid body (not shown) with a shape adapted to the shape of the container 100. Since the middle plug 40, the liquid absorption core 50, and the volatilization body 60 are substantially the same as those of the volatilization device 10 of the first embodiment, their illustration and description are omitted.

[0042] Container 100 has a substantially square bottom 102 with rounded corners. Bottom 102 has substantially the same uneven structure (central part 2, ridge part 3, outer peripheral part 4, wall part 5, guide groove part 6) as volatilization device 10 of the first embodiment. Therefore, for the uneven structure, components having the same functions as those in the first embodiment are denoted by the same reference numerals, and detailed descriptions thereof are omitted.

[0043] Container 100 has a body part 104 (peripheral part) with a shape different from that of body part 24 of container 20 of the first embodiment. Body part 104 is a cylindrical shape in which the front side bulges greatly outward and the back side bulges slightly outward. Body part 104 has a shape that expands toward the annular lower end of shoulder 108.

[0044] Also in this embodiment, the lower end 52 of liquid absorption core 50 in contact with central part 2 of bottom 102 can be guided to outer peripheral part 4, and the chemical liquid can be used up without waste.

[0045] The present invention has been described based on several embodiments above, but the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications and applications are possible within the scope of the gist of the present invention. Also, each embodiment may be implemented in appropriate combination, and in that case, the combined effects can be obtained.

[0046] For example, in the above-described first to fourth embodiments, the shape of bottom 22 of container 20 was substantially elliptical, but the shape of bottom 22 may be any shape, and in addition to the shape of bottom 102 of the fifth embodiment, for example, it may be circular, polygonal, or the like.

[0047] Also, for example, the uneven structure of bottom 102 of container 100 of the fifth embodiment may be made the same as the structures of the second to fourth embodiments.

Explanation of Reference Numerals

[0048] 2…Center part, 3…Ridge part, 4…Outer peripheral part, 5…Wall part, 6…Guide groove part, 6a…Folding joint surface, 8…Holding part, 10…Volatilization device, 20, 100…Container, 22, 102…Bottom part, 22a…Inner surface, 24, 104…Barrel part, 26, 106…Head part, 26a…Opening part, 28…Shoulder part, 30…Cover body, 33…Volatilization hole, 40…Plug, 42…Upper wall part, 46…Tube part, 50…Liquid absorption core, 52…Lower end, 54…Upper end, 60…Volatilization body, 62…Lower surface, 64…Upper surface, C…Central axis.

Claims

1. A container having a cylindrical peripheral portion and a bottom portion with one axial end of the peripheral portion closed, the container containing a drug solution; a liquid-absorbent wick having a lower end that is disposed against the bottom and disposed in the container with a portion of the lower end side immersed in the chemical solution; the bottom portion has an outer circumferential portion continuous with the inside of the one end of the peripheral portion, a center portion located inside the outer circumferential portion toward the other end in the axial direction from the outer circumferential portion, and a guide groove portion inclined from the center portion toward the outer circumferential portion, the guide groove portion functions to guide the lower end of the liquid absorbent wick, which has been in contact with the central portion when the liquid absorbent wick is inserted into the container, to the outer periphery by sliding the lower end of the liquid absorbent wick toward the outer periphery, and to position the lower end on the outer periphery. Volatilization device.

2. the liquid absorbent wick has a length such that, with the lower end disposed on the outer periphery, at least the upper end protrudes from an opening at the other end of the container; The volatilization device according to claim 1.

3. a sliding contact surface of the guide groove portion with which the lower end of the liquid absorbent wick slides has a shape in which a line intersecting a flat cross section along the axial direction passing through the central portion and the outer circumferential portion and a straight line connecting any two points on the line are inclined from the central portion toward the one end toward the outer circumferential portion. The volatilization device according to claim 1.

4. The line is a free-form curve. The volatilization device according to claim 3.

5. The guide groove portion is provided in a plurality of portions. The volatilization device according to claim 1.

6. The guide groove and the outer periphery are joined to each other in a circumferential direction of the holding portion. The volatilization device according to claim 1.

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