JP7376868B2 - heating evaporator - Google Patents

Description

TECHNICAL FIELD The present invention relates to a heating evaporator that promotes evaporation of a chemical liquid such as an aromatic agent.

BACKGROUND ART A heating evaporator that promotes evaporation of a chemical solution such as an aromatic agent is known. As such a heating evaporator, there are two known configurations: one in which a heating element such as a heater is installed above a chemical container containing a chemical solution, and the other in which a heating element is installed in the upper part of a cover that houses the heating element inside. It is being The heating evaporator heats the liquid absorption wick with a heating element to heat and vaporize the chemical liquid sucked up by the liquid absorption wick, and discharges the chemical liquid vaporized by the heating element to the outside from the evaporation port.

Furthermore, it is known that this type of heating evaporator is provided with a rectifying means on the inner surface of the cover to rectify the airflow within the cover (see, for example, Patent Document 1).

Japanese Patent Application Publication No. 2000-270750

A heating evaporator is required to evaporate a chemical solution over a wide range of a room space such as a room in which the heating evaporator is installed.

Therefore, an object of the present invention is to provide a heating evaporator capable of evaporating liquid over a wide range.

The heating evaporator of the present invention includes a container body that stores a liquid, a liquid absorbent wick that is partially housed in the container body and partially exposed outside the container body, and a container that includes a liquid absorbent wick that is partially housed in the container body and partially exposed outside the container body. a heating unit that heats a portion disposed outside the container body; and a heating unit that is removably attached to the container body, and stores at least a portion of the liquid absorbent wick exposed outside the container body and the heating unit inside. and an opening is formed at the top, and at least a part of the inner surface that continues downward from the opening has an area that is surrounded by the inner surface in a cross section perpendicular to the vertical direction of the range. The inner surface is provided with a plurality of ribs configured in a spiral shape converging from below toward the opening , and a lower end of each of the plurality of ribs is connected to the inner surface of the opening. A cover disposed at the same height as the upper end of the heating section or at a lower height than the upper end of the heating section .

According to the present invention, it is possible to provide a heating evaporator that can evaporate liquid over a wide range.

FIG. 1 is a perspective view showing the configuration of a heating evaporator according to an embodiment of the present invention. FIG. 1 is an exploded perspective view showing the configuration of the heating evaporator of this embodiment. FIG. 1 is a sectional view showing the configuration of a heating evaporator according to the present embodiment. FIG. 3 is a bottom view showing the configuration of a cover and a heating element support part used in the heating evaporator of the present embodiment. FIG. 2 is a perspective view showing the configuration of a heating element support section of the present embodiment. FIG. 2 is a perspective view showing the configuration of a heating element support section of the present embodiment. FIG. 3 is a bottom view showing the configuration of the heating element support section of the present embodiment. FIG. 2 is a plan view showing the configuration of the cover of this embodiment. FIG. 3 is a bottom view showing the configuration of the cover of this embodiment.

A heating evaporator 10 according to one embodiment will be described using FIGS. 1 to 9. FIG. 1 is a perspective view showing the configuration of a heating evaporator 10. FIG. 2 is an exploded perspective view showing the configuration of the heating evaporator 10. As shown in FIG. FIG. 3 is a cross-sectional view showing the configuration of the heating evaporator 10, with only the components other than the chemical liquid container 20 cut away. FIG. 4 is a bottom view showing the configuration of the cover 60 and heating element support part 50 used in the heating evaporator 10. FIG. 5 is a perspective view showing the configuration of the heating element support section 50 as viewed from the front. FIG. 6 is a perspective view showing the configuration of the heating element support section 50 as viewed from the rear. FIG. 7 is a bottom view showing the configuration of the heating element support section 50. FIG. 8 is a plan view showing the structure of the cover 60. FIG. 9 is a bottom view showing the structure of the cover 60.

As shown in FIGS. 1 to 3, the heating evaporator 10 includes a chemical liquid container 20 that stores a chemical liquid L, and a heating evaporator main body 30 that is detachably attached to the upper part of the chemical liquid container 20 and promotes vaporization of the chemical liquid L. It is equipped with. The chemical liquid L is an example of a liquid that is evaporated by the heating evaporator 10. The chemical liquid L is, for example, an aromatic agent.

As shown in FIGS. 2 and 3, the chemical liquid container 20 includes a container main body 21 that stores the chemical liquid L, and a liquid absorption core 22 provided in the container main body 21. The container body 21 includes a cylindrical first body 23 , a bottom wall 24 formed at the lower end of the first body 23 , and a threaded portion 25 formed at the top of the first body 23 . , has.

The first body portion 23 is configured to have a cylindrical shape, for example, with a cross section orthogonal to the up-down direction having a rectangular shape that is elongated in one direction. A protrusion 26 is formed on one side surface of the first body 23 along the longitudinal direction. The protruding portion 26 is configured, for example, in an oval shape.

Note that the vertical direction of the heating evaporator 10 is a direction parallel to the direction of gravity when the heating evaporator 10 is placed on a horizontal plane. The heating evaporator 10 is used in a posture in which the vertical direction of the heating evaporator 10 is parallel or substantially parallel to the direction of gravity.

The bottom wall portion 24 closes the lower end of the first body portion 23 .
The threaded portion 25 is configured such that a lid member that covers the liquid-absorbing wick 22 can be screwed into the threaded portion 25 when the heating evaporator 10 is not in use. The threaded portion 25 has a cylindrical shape, and has a male thread formed on its outer peripheral surface. The threaded portion 25 is arranged coaxially with the first body portion 23 . The threaded portion 25 is configured to have a diameter slightly smaller than the length of the first body portion 23 in the transverse direction, for example. For this reason, a shoulder portion 27 is formed between the lower end of the threaded portion 25 and the edge portion of the upper end of the first body portion 23 along the widthwise direction, which gently connects these. In addition, in FIG. 3, the threaded portion 25 is shown with the male thread omitted.

A first hole 28 in which the liquid absorbent core 22 is placed is formed at the upper end of the threaded portion 25 . The first hole 28 communicates with the inside of the container body 21 .

The liquid absorbent core 22 has a rod shape that is long in one direction. The liquid absorbent wick 22 is attached to the container body 21 through the first hole 28 . A portion of the liquid absorbent wick 22 is housed within the container body 21, and the other portion is placed outside the container body 21.

Further, the liquid absorbent core 22 may be positioned in the first hole 28, for example, with the axis of the liquid absorbent core 22 extending in the vertical direction. The positioning referred to here means that at least movement of the liquid absorbent core 22 in the radial direction of the first hole 28 is prevented. As an example of this regulation, the liquid absorbent wick 22 may be fixed to the first hole 28, for example. In the case of a structure in which the liquid absorbent core 22 is fixed to the first hole 28, this fixing means is an example of a positioning means. For example, by fitting the liquid absorbent core 22 into the first hole 28, be. Note that the means for positioning the liquid absorbent core 22 in the first hole 28 is not limited.

The heating evaporator main body 30 includes a heating element unit 40, a heating element support section 50 that supports the heating element unit 40, and a cover 60.

The heating element unit 40 includes a heating element 41, a control section 42 that controls the heating element 41, and a plug 43. The heating element 41 is a device that includes a heating section 46, which will be described later, and is configured to be able to raise the temperature of the heating section 46. The heating element 41 includes an outer shell 44 , a supported part 45 supported by the heating element support part 50 , and a heating part 46 .

As shown in FIG. 2, the outer shell 44 is made of, for example, a resin material. The outer shell 44 has a second hole 44a in which the heating section 46 is placed. The second hole 44a penetrates the outer shell 44. The outer body 44 is configured to have a long shape in one direction.

For example, a plurality of supported parts 45, specifically two supported parts, are formed on the outer shell 44. The supported portion 45 is configured, for example, as a protrusion that protrudes from each of both side surfaces of the outer body 44 along the longitudinal direction. Each of the supported parts 45 is formed with a third hole 45a in which a screw is placed.

The heating unit 46 is configured to be able to heat the liquid absorbent core 22. The heating part 46 is configured, for example, in a shape in which a part of the liquid-absorbing wick 22 is disposed inside. The heating part 46 is configured in an annular shape, as an example of a shape in which a part of the liquid-absorbing core 22 is disposed inside. The heating section 46 is configured to be able to be heated by electric power supplied from the control section 42 . The heating portion 46 preferably has a size such that its inner surface does not come into contact with the liquid absorbent wick 22. The heating section 46 is supported by the outer shell 44 . For example, the outer circumferential side of the heating part 46 is housed within the outer shell 44, and the inner circumferential side thereof is exposed. The inner peripheral surface of the heating part 46 is arranged inside the second hole 44a of the outer shell 44. The upper end 46a of the heating part 46 is arranged at the same height position as the upper surface of the outer shell 44 in the vertical direction.

The control section 42 is electrically connected to the plug 43 and the heating section 46 . The control section 42 is driven by electric power supplied through the plug 43 and raises the temperature of the heating section 46 . The control unit 42 is configured to be able to raise the temperature of the heating unit 46 to a temperature that promotes evaporation of the chemical solution L contained in the liquid absorbent wick 22.

The plug 43 is electrically connected to the control unit 42 and configured to be insertable into a socket of the power supply unit. The socket of the power supply unit is, for example, a household power outlet. The heating element unit 40 configured in this manner is, for example, a PTC heater.

As shown in FIG. 2, the heating element support section 50 includes a storage section 51 that stores the screw section 25 of the container body 21, a first fixing section 52 to which the heating element 41 is fixed, a control section 42, and a plug 43. and a second fixing part 53 to which is fixed.

As shown in FIGS. 5 to 7, the storage section 51 includes a second body section 54 having a cylindrical shape, and is formed on the upper part of the second body section 54, and is formed in a space inside the second body section 54. and a first upper wall portion 55 that covers the upper part of.

The second body portion 54 has a cylindrical shape with a predetermined gap S between its inner circumferential surface and the outer circumferential surface of the threaded portion 25 housed therein. The second body portion 54 has a rectangular cylindrical shape, for example.

A flange portion 56 extending outward is formed at the lower end of the second body portion 54 . The flange portions 56 are formed at the lower end of the second body portion 54 in a region facing the shoulder portion 27 of the container body.

An engaging portion 57 configured to be able to engage with the protruding portion 26 of the container body 21 is formed between the two flange portions 56 . Specifically, the engaging portion 57 is configured in a frame shape extending downward from one end of the two flange portions 56 in a direction perpendicular to the direction in which the two flange portions 56 are lined up.

When the heating evaporator main body 30 is attached to the chemical liquid container 20, the lower edge 57a of the engaging portion 57 is arranged below the protrusion 26 of the container main body 21. Therefore, when the heating evaporator main body 30 is moved upward with respect to the chemical liquid container 20, the lower edge portion 57a comes into contact with the protrusion 26, thereby making it difficult for the heating evaporator main body 30 to come off from the chemical liquid container 20.

Note that the engaging portion 57 is configured to engage the protruding portion 26 when the lower surface of the container main body 21 is floating without contacting anything when the plug 43 of the heating evaporator 10 is inserted into a household outlet. Touches the bottom surface. The engagement between the engaging portion 57 and the protruding portion 26 is thus strong enough that it will not be released even when the lower surface of the container body 21 is in a floating state. The engaging portion 57 is configured to move the heating evaporator body 30 upward with a predetermined force with respect to the chemical liquid container 20 when removing the chemical liquid container 20 from the heating evaporator main body 30 when the chemical liquid L is used up. , configured to be released.

The first upper wall portion 55 is formed on the upper part of the second body portion 54 . As shown in FIG. There is a gap between the upper end of the portion 25 and the upper end of the portion 25 . The vertical width of this gap, in other words, the vertical distance from the lower surface 55b to the upper end of the threaded portion 25 is, for example, 1 mm.

When the heating evaporator 10 is placed on the floor, desk, etc., the engaging portion 57 and the protruding portion 26 are released from contact, and the lower surface 55b is brought into contact with the upper end of the threaded portion 25, so that the heating element support portion 50 is supported by the drug solution container 20. A fourth hole 55a is formed in the center of the first upper wall portion 55, in which a portion of the liquid absorbent core 22 exposed from the container body 21 can be placed.

In addition, in this embodiment, when the heating evaporator 10 is placed on a placing part such as a floor or a desk, the lower surface 55b of the first upper wall part 55 comes into contact with the upper end of the threaded part 25, so that heat is generated. Although the structure in which the body support part 50 is supported by the drug solution container 20 has been described as an example, the present invention is not limited to this. In another example, the heating element support part 50 may be supported by the chemical liquid container 20 by the lower end of the second body part 54 or the flange part 56 coming into contact with the container main body 21 .

The first fixing portion 52 is formed integrally with the second body portion 54 and the flange portion 56, and is configured as a protruding portion that protrudes above the upper surface of the first upper wall portion 55 of the second body portion 54. be done. The first fixing portion 52 is formed on the opposite side of the engaging portion 57 across the fourth hole 55a of the first upper wall portion 55.

The first fixing portions 52 are formed in the same number as the supported portions 45 of the heating element 41 . In this embodiment, two first fixing parts 52 are formed. One of the first fixing parts 52 is formed at a position facing one of the supported parts 45 of the heating element 41 in the vertical direction. The other first fixing part 52 is formed at a position facing the other supported part 45 in the vertical direction.

The first fixing part 52 has a protruding part 52a formed on its upper surface to fit into the third hole 45a of the supported part 45 of the heat generating element 41. A fifth hole 52b in which a screw can be placed is formed in the first fixing part 52 and the protruding part 52a.

As shown in FIG. 6, the second fixing portion 53 is integrally formed on the second body portion 54 on the opposite side of the engaging portion 57 with the fourth hole 55a interposed therebetween. Specifically, the second fixing portion 53 includes a rib protruding from the outer surface of the second body portion 54, a wall portion extending downward from the lower end of the second body portion 54, and the like. As shown in FIG. 1, the second fixing portion 53 covers a part of the side surface of the first body 23 of the liquid medicine container 20 that faces the side surface having the protrusion 26.

In the heating element support section 50 configured as described above, a plurality of ventilation holes 58 are formed in a line in the circumferential direction of the fourth hole 55a of the first upper wall section 55. For example, as shown in FIGS. 5 to 7, the ventilation hole 58 includes a first ventilation hole 58a formed in one of the regions between the two flange portions 56 of the second body portion 54, and A plurality of second ventilation holes 58b are formed in each of the regions on both sides of the first ventilation hole 58a of the second body portion 54 and the flange portion 56, and two second ventilation holes 58b of the first upper wall portion 55 are formed. A plurality of third ventilation holes 58c are formed in the area between the first fixing portions 52.

For example, three second ventilation holes 58b are formed on each side of the first ventilation hole 58a. For example, two third ventilation holes 58c are formed.

As shown in FIG. 1, the cover 60 is configured such that at least both the portion of the liquid absorbent wick 22 exposed outside the container body 21 and the heating section 46 can be housed therein. In this embodiment, the cover 60 is open at its lower end, and when the heating evaporator main body 30 is attached to the chemical liquid container 20, at least the heating part 46, which is the part of the heating element 41 where the temperature becomes high, and Both of the portions of the liquid absorbent wick 22 exposed outside the container body 21 are configured to be able to be stored inside.

In this embodiment, the cover 60 is configured to accommodate a part of the chemical liquid container 20, a configuration excluding the plug 43 of the heating element unit 40, a part of the heating element support part 50, and the heating element unit 40 inside. be done.

In addition, the area of the area of the cover 60 surrounded by the inner surface 60a of the cover 60 in a cross section perpendicular to the vertical direction extends upward from the same height position as the upper end 46a of the heating section 46 or from a position lower than the upper end 46a. It is configured in a shape that gradually becomes smaller as the size increases.

In other words, in at least a part of the inner surface 60a of the cover 60 that extends from the evaporation port 63 to the transpiration port 63 below, the area of the region surrounded by the inner surface 60a in the cross section perpendicular to the vertical direction decreases upward. It is formed into a shape. Furthermore, the lower end of this range is arranged at the same height position as the upper end 46a of the heating section 46, or at a lower height position than the upper end 46a.

As a specific example, the cover 60 has a third body part 61 and a second upper wall part 62 formed at the upper end of the third body part 61, as shown in FIG.

The third body portion 61 has a cross section perpendicular to the vertical direction, for example, a rectangular shape, and as it goes from the lower end to the upper end of the third body portion 61 in the vertical direction, the cross section perpendicular to the vertical direction becomes smaller. The area of the region surrounded by the inner surface 61a of the body 61 of No. 3 is formed into a cylindrical shape whose area becomes gradually smaller.

The second upper wall portion 62 is configured in a bowl shape that projects upward. The second upper wall portion 62 has a cross section perpendicular to the vertical direction, for example, a rectangular shape, and as it goes from the lower end to the upper end of the second upper wall portion 62, the second cross section perpendicular to the vertical direction increases. The area of the region surrounded by the inner surface 62a of the upper wall portion 62 is configured to gradually become smaller. The inner surfaces 61a and 62a are part of the inner surface 60a.

Here, R is a region surrounded by the inner surface 60a of the cover 60 in a cross section perpendicular to the vertical direction of the cover 60. The area surrounded by the inner surface 61a of the third body part 61 in the cross section perpendicular to the vertical direction of the third body part 61 is R1, and the second area in the cross section perpendicular to the vertical direction of the second upper wall part 62 is The area surrounded by the inner surface 62a of the upper wall portion 62 is designated as R2.

Regions R1 and R2 are part of region R. The degree of decrease in the area of region R2 from below to above is greater than the degree of decrease in the area of region R1 from below to above. Here, the degree of decrease is large based on a value obtained by dividing the area of the region R at the upper position of two positions shifted by a unit distance in the vertical direction by the area of the region R at the lower position. The smaller the divided value, the greater the degree of decrease. In other words, the second upper wall portion 62 is configured to have a shape that tapers upward compared to the third body portion 61.

The lower end 62b of the inner surface 62a of the second upper wall portion 62 is located at the same height position as the upper end 46a of the heating section 46, or at a lower height position than the upper end 46a. In this embodiment, the lower end 62b is located below the upper end 46a of the heating section 46. In this embodiment, the upper end of the outer shell 44 and the upper end 46a of the heating section 46 are located at the same height position. The upper end of the outer body 44 and the upper end 46a of the heating section 46 constitute the upper end 41a of the heating element 41. Therefore, in other words, the upper end 41a of the heating element 41 is arranged at a position in the internal space of the cover 60 where the rate of decrease in the region R is relatively large. In addition, in FIG. 3, the heating element 41 is shown by a two-dot chain line for explanation of the surrounding structure.

Further, a region of the third body portion 61 facing the second fixing portion 53 is configured to project outward in accordance with the second fixing portion 53 and the control portion 42 .

A portion of the lower edge 61b of the third body portion 61 has a shape that follows the outer edge of the flange portion 56, the engaging portion 57, and a portion of the edge of the second fixing portion 53 of the heating element support portion 50. configured. The other portion of the lower edge 61b of the third body portion 61 is configured to form an opening 61c between the second fixing portion 53 and the opening 61c in which the plug 43 is disposed.

Note that a portion of the third body portion 61 may have a gap between the flange portion 56 and the engaging portion 57. In this embodiment, as shown in FIG. 4, the third body portion 61 has gaps S1 and S2 between it and the flange portion 56. Further, the third body portion 61 has a gap S3 between the third body portion 61 and the engaging portion 57.

As shown in FIG. 8, a transpiration port 63 is formed in the center of the second upper wall portion 62 of the cover 60. For example, as shown in FIG. 3, the center of the evaporation port 63 is arranged on the axis of the first hole 28 of the chemical liquid container 20. In this embodiment, as an example, the liquid absorbent core 22 is positioned coaxially with the first hole 28 . Therefore, the center of the evaporation port 63 is arranged on the axis of the liquid absorption core 22.

For example, the transpiration port 63 has a shape that protrudes from the center of the transpiration port 63 in three directions orthogonal to the up-down direction. In other words, the transpiration port 63 is configured such that three holes 63a arranged in the circumferential direction communicate with each other at the center of the second upper wall portion 62.

As shown in FIGS. 3 and 9, the area R of the inner surface 60a of the cover 60, in which the area of the region R gradually decreases upward, extends from the periphery of the evaporation port 63 to the outside in the radial direction around the transpiration port 63. A plurality of ribs 64 are formed. The plurality of ribs 64 extend along the inner surface 60a. Further, since the evaporation port 63 is formed in the second upper wall portion 62, the plurality of ribs 64 extend downward along the inner surface 62a . For example, six ribs 64 are formed.

The plurality of ribs 64 are configured to have a curved shape when viewed from below that guides the chemical L vaporized from the liquid absorbent wick 22 to the evaporation port 63. The shapes of the plurality of ribs 64 will be specifically explained. Here, the lower end of the region of the inner surface 60a where each rib 64 is formed is defined as a first lower end 64a, and the upper end is defined as a first upper end 64b. As shown in FIG. 9, each rib 64 has a curved shape that protrudes in the same direction from the first lower end 64a to the first upper end 64b when viewed from below. More specifically, each rib 64 has a curved shape that protrudes counterclockwise around the evaporation port 63, for example, as shown by arrow D in the figure. In other words, each rib 64 is configured in a spiral shape. Further, each rib 64 is configured in a shape that allows the cover 60 to be molded, for example, so that the cover 60 can be molded by injection molding.

Next, the lower ends of the plurality of ribs 64 will be referred to as second lower ends 64c, and the positions of the first lower ends 64a and second lower ends 64c, which are the lower ends of the region of the inner surface 60a where each rib 64 is formed, will be described. The first lower end 64a, which is the lower end of the area where each rib 64 of the inner surface 60a is formed, and the second lower end 64c of each of the plurality of ribs 64 are at the same height position as the upper end 46a of the heating section 46, or at the upper end. It is arranged at a lower height position than 46a. In this embodiment, the plurality of ribs 64 are formed on the inner surface 62a of the second upper wall portion 62, and are not formed on the inner surface 61a of the third body portion 61, as an example.

In this embodiment, as an example, the first lower end 64a of each of the plurality of regions in which the ribs 64 of the inner surface 60a are formed and the second lower end 64c of each of the plurality of ribs 64 are vertically arranged on the inner surface 62a. It is arranged at the same position as the lower end 62b. In other words, in this embodiment, the second lower ends 64c of each of the plurality of ribs 64 are linearly arranged in a plane that is perpendicular to the vertical direction of the cover 60 and passes through the lower end 62b.

Next, the height dimensions of each of the plurality of ribs 64 will be explained. As shown in FIG. 3, let H be the height of each of the plurality of ribs 64 from the inner surface 60a. The height dimension H referred to here is the height from the inner surface 60a along the direction orthogonal to the up-down direction. The height dimension H gradually increases from the first upper end 64b to the first lower end 64a of each region of the inner surface 60a where the plurality of ribs 64 are formed.

Further, in this embodiment, the height H of the rib 64 at the first upper end 64b of the region where each of the plurality of ribs 64 of the inner surface 60a is formed is, for example, zero or approximately It is zero.

Furthermore, a third fixing part 65 is formed on the inner surface 60a of the cover 60 to fix the heating element support part 50 with a screw. The same number of third fixing parts 65 as the first fixing parts 52 of the heating element support part 50 are formed. One third fixing part 65 is formed at a position facing one first fixing part 52 in the vertical direction. The other third fixing part 65 is formed at a position facing the other first fixing part 52 in the vertical direction.

Next, an example of a method for assembling the heating evaporator 10 will be described.
First, the heating element unit 40 is attached to the heating element support section 50. Specifically, the control section 42 of the heating element unit 40 is fixed to the second fixing section 53 of the heating element support section 50 .

Next, the supported part 45 of the heat generating element 41 is placed on each of the two first fixed parts 52 of the heat generating element support part 50, and the protruding part 52a of the first fixed part 52 is connected to the second fixed part 52 of the supported part 45. It fits into the hole 45a of No.3. By fitting the protruding portion 52a into the third hole 45a, the heating element 41 is temporarily fixed to the heating element support portion 50.

Next, the heating element unit 40 and the heating element support section 50 are housed in the cover 60. At this time, the second fixing part 53 and the control part 42 of the heating element support part 50 are housed inside the outwardly projecting part of the cover 60, and one supported part 45 of the heating element unit 40 is placed inside the cover 60. , and the other supported part 45 is opposed to the other third fixing part 65 . Due to this alignment, the third fixing part 65 and the first fixing part 52 of the heating element support part 50 are opposed to each other with the supported part 45 interposed therebetween.

Next, a screw is inserted through the hole of the first fixing part 52 and the hole of the supported part 45 and is screwed into the screw hole of the third fixing part 65. Thereby, the heating element 41, the heating element support part 50, and the cover 60 are fixed together. This completes the assembly of the heating evaporator main body 30.

Next, the lid member covering the liquid-absorbing core 22 is removed from the chemical liquid container 20. Next, the heating evaporator main body 30 is attached onto the chemical liquid container 20. Specifically, the threaded portion 25 of the container body 21 is housed in the second body portion 54, and the portion of the liquid absorbent wick 22 that exits from the container body 21 is inserted into the first upper wall portion of the storage portion 51. 55 and the heating section 46 of the heating element 41, and the protruding section 26 of the container body 21 is disposed inside the engaging section 57. This completes the assembly of the heating evaporator 10.

Next, the operation of the heating evaporator 10 will be explained.
When using the heating evaporator 10, the user inserts the plug 43 into, for example, a household electrical outlet arranged on a plane parallel to the vertical direction. When the plug 43 is inserted into a household outlet, the heating evaporator 10 is in an attitude in which the vertical direction of the heating evaporator 10 is parallel or substantially parallel to the direction of gravity.

In the heating evaporator 10, the control unit 42 raises the temperature of the heating unit 46 when the plug 43 is inserted into a household outlet or the like. The heating unit 46 is heated to a temperature that promotes vaporization of the chemical liquid L sucked up by the liquid absorbent wick 22.

The liquid absorption core 22 facing the heating part 46 is heated by the heating part 46, so that the chemical liquid L drawn up from the container body 21 is vaporized. The vaporized chemical liquid L moves upward within the cover 60. At this time, the vaporized chemical liquid L is guided to the evaporation port 63 by a plurality of spiral ribs 64 formed on the inner surface 60a of the cover 60 while forming a spiral movement trajectory. Further, since the vaporized chemical liquid L forms a spiral movement trajectory, the length of the movement path of the vaporized chemical liquid L within the cover 60 becomes longer. As a result, the amount of vaporized chemical L that accumulates inside the cover 60 increases, and the pressure around the evaporation port 63 inside the cover 60 increases.

The vaporized chemical liquid L guided to the evaporation port 63 is linearly discharged upwardly outside the cover 60 through the transpiration port 63 due to the pressure within the cover 60 . The discharged vaporized chemical solution L is diffused over a wide area of the room.

In addition, the air outside the heating evaporator 10 mainly passes through the gap between the heating evaporator main body 30 and the chemical container 20, passes through the ventilation hole 58, and flows between the heating element support part 50 and the cover 60. Move in space. Specifically, it moves into the space between the heating element support part 50 and the cover 60 through the first ventilation hole 58a, the plurality of second ventilation holes 58b, and the plurality of third ventilation holes 58c.

Since the first ventilation hole 58a, the plurality of second ventilation holes 58b, and the plurality of third ventilation holes 58c are arranged in the circumferential direction of the fourth hole 55a of the heating element support part 50, The air that has passed through the air holes 58a, the plurality of second ventilation holes 58b, and the plurality of third ventilation holes 58c and moved into the space between the heating element support part 50 and the cover 60 flows into the heating part 46 of the heating element 41. It invades from the circumferential direction.

In the heating evaporator 10 of the present embodiment configured as described above, the plurality of spiral ribs 64 are formed on the inner surface 60a of the cover 60, so that the chemical liquid L heated by the heating section 46 and turned into a gas is , is guided to the evaporation port 63 along the plurality of spiral ribs 64, so the movement path within the cover 60 to the transpiration port 63 forms a spiral trajectory. For this reason, the moving path length of the chemical liquid L that has become a gas within the cover 60 becomes longer, so that the amount of the chemical liquid L that has become a gas inside the cover 60 is smaller than that of a structure that does not have a plurality of ribs 64. There will be more. As a result, the pressure in the cover 60 in the vicinity of the evaporation port 63 increases, so that the rising height of the gaseous chemical L discharged from the transpiration port 63 to the outside can be increased. For this reason, it becomes possible to diffuse the gaseous chemical liquid over a wide range within the room space where the heating evaporator 10 is installed.

Furthermore, the area of the region surrounded by the inner surface 60a of the cover 60 in a cross section perpendicular to the vertical direction of the cover 60 gradually becomes smaller as it goes from below toward the evaporation port 63. Therefore, it is possible to further increase the pressure in the cover 60 near the evaporation port 63, so that the gaseous chemical L discharged from the transpiration port 63 to the outside is raised to a higher position. becomes possible. As a result, the chemical liquid L that has become a gas can be diffused over a wide range.

Furthermore, the second lower ends 64c of the plurality of ribs 64 are arranged at the same height position in the vertical direction as the upper end 46a of the heating section 46, or at a lower height position than the upper end 46a. Therefore, the movement of the chemical liquid L heated and vaporized by the heating unit 46 is guided by the plurality of ribs 64 immediately after it comes out from the heating element 41 . As a result, it becomes possible to smoothly guide the chemical liquid L that has become a gas to the evaporation port 63, so that generation of turbulent flow within the cover 60 can be suppressed. As a result, it becomes possible to raise the vaporized chemical liquid discharged from the evaporation port 63 to a higher position.

Furthermore, the degree of decrease in the area of the region R2 surrounded by the inner surface 62a of the cross section orthogonal to the vertical direction of the second upper wall portion 62 as it goes upward is The lower end 62b of the inner surface 62a is at the same height in the vertical direction as the upper end 46a of the heating part 46, which is higher than the degree of decrease in the area of the region R1 surrounded by the inner surface 61a of the cross section perpendicular to the direction. By being arranged at a lower height position than the upper end 46a, the gaseous chemical L coming out of the heating section 46 is smoothly guided to the evaporation port 63 also by the inner surface 62a. Therefore, generation of turbulent flow within the cover 60 can be suppressed. As a result, it becomes possible to raise the vaporized chemical liquid discharged from the evaporation port 63 to a higher position.

Further, the height H of each of the plurality of ribs 64 gradually increases from the first upper end 64b of the region of the inner surface 60a of the cover 60 where the ribs 64 are formed toward the first lower end 64a. In other words, the height H of the rib 64 decreases as it approaches the evaporation port 63. As a result, the resistance of the gaseous chemical L, which is not guided by the plurality of ribs 64, to flow to the evaporation port 63 can be reduced.

This effect will be specifically explained. Of the chemical liquid L that has become a gas due to the heating element 41 , the chemical liquid L that has become a gas mainly flows near the inner surface 60 a and is guided to the evaporation port 63 by the plurality of ribs 64 . The plurality of ribs 64 act as resistance to the flow of the gaseous chemical L that is not guided by the plurality of ribs 64 to the evaporation port 63 .

However, in the present embodiment, the height dimension H of the plurality of ribs 64 decreases toward the evaporation port 63, so that the resistance to the flow of the chemical liquid L, which has become a gas and is not guided by the plurality of ribs 64, can be reduced. . As a result, generation of turbulent flow within the cover 60 can be suppressed, so that the vaporized chemical solution discharged from the evaporation port 63 can be raised to a higher position.

Furthermore, by forming a plurality of ventilation holes 58 arranged in the circumferential direction of the fourth hole 55a in which the liquid absorbing core 22 is disposed in the heat generating element support part 50, a space between the heat generating element support part 50 and the cover 60 is formed. Air can be supplied in a well-balanced manner from the outside in the circumferential direction toward the liquid-absorbing core 22. As a result, generation of turbulence around the evaporation port 63 of the cover 60 can be suppressed. As a result, it becomes possible to raise the vaporized chemical liquid discharged from the evaporation port 63 to a higher position.

In the present embodiment, the heating evaporator 10 has been described as having a configuration that promotes vaporization of a chemical liquid such as an aromatic agent, but the present invention is not limited to this. The heating evaporator 10 may promote vaporization of liquids other than chemical liquids, for example. In this configuration, the drug solution container 20 stores a liquid other than the drug solution.

In the present embodiment, the heating transpiration device 10 has an area of a region surrounded by the inner surface 60a of the inner surface 60a of the cover 60 in a cross section perpendicular to the vertical direction of at least a part of the range that continues downward from the evaporation port 63. The third body portion 61 has a configuration in which the area of the region surrounded by the inner surface 61a having a cross section orthogonal to the vertical direction from the lower end to the upper end gradually decreases as the area increases as the third body portion 61 gradually decreases as it goes upward; Although the second upper wall portion 62 has been described as an example, the area of the region surrounded by the inner surface 62a having a cross section perpendicular to the vertical direction gradually decreases upward, but the present invention is not limited thereto.

That is, the present embodiment has been described as an example of a shape in which the area of the region surrounded by the inner surface 60a of the cross section perpendicular to the vertical direction from the lower end to the upper end of the cover 60 decreases upward.

In another example, the third body portion 61 may have a constant cross section perpendicular to the up-down direction from the upper end to the lower end. Alternatively, in another example, the cover 60 may have a tapered shape such as a cone or a triangular pyramid.

Further, in the present embodiment, in the heating evaporator 10, each of the plurality of ribs 64 extends in the vertical direction at the first upper end 64b, which is the upper end of the region of the inner surface 60a where each of the plurality of ribs 64 is formed. Although the configuration in which the height dimension H in the orthogonal direction is zero or approximately zero has been described as an example, the present invention is not limited to this. In another example, the height dimension H of each of the plurality of ribs 64 at the first upper end 64b perpendicular to the vertical direction may be larger than zero.

Further, in this embodiment, the lower end 62b of the inner surface 62a of the second upper wall portion 62 is disposed at the same height position as the upper end 46a of the heating section 46, or at a lower height position than the upper end 46a, and Although the second lower end 64c of each of the ribs 64 is arranged at the same height position as the upper end 46a of the heating section 46 or at a lower height position than the upper end 46a, the configuration is not limited to this. Not done.

If the height position of the upper end 46a of the heating part 46 is different from the height position of the upper surface of the outer shell 44, for example, the lower end 62b of the inner surface 62a of the second upper wall part 62 The second lower end 64c of each of the plurality of ribs 64 is located at the same height as the upper surface of the outer shell 44 or at a lower height than the upper surface of the outer shell 44. , it may be arranged at a lower height position than the upper surface of the outer body 44.

For example, when the height position of the upper surface of the outer body 44 is higher than the height position of the upper end 46a of the heating part 46, the chemical liquid L vaporized by the heating part 46 moves above the heating part 46, and then It exits the heating element 41 through a second hole 44a formed on the upper surface of the outer shell 44.

Therefore, the lower end 62b of the inner surface 62a of the second upper wall portion 62 is arranged at the same height as the upper surface of the outer shell 44 or at a lower height than the upper surface of the outer shell 44, and the plurality of ribs 64 If each of the second lower ends 64c is arranged at the same height position as the upper surface of the outer shell 44 or at a lower height position than the upper surface of the outer shell 44, the second lower end 64c of each of the The vaporized chemical liquid L that has come out of the heating element 41 is smoothly guided to the evaporation port 63 by the inner surface 62a of the second upper wall portion 62 and the plurality of ribs 64.

Alternatively, if the height position of the upper end 46a of the heating part 46 is different from the height position of the upper surface of the outer shell 44, for example, the lower end 62b of the inner surface 62a of the second upper wall part 62 A plurality of The second lower end 64c of each of the ribs 64 is located at the same height as the higher of the upper surface of the outer shell 44 and the upper end 46a of the heating section 46, or at the same height as the higher one of the upper surface of the outer shell 44 and the upper end 46a of the heating section 46. It may be arranged at a lower height position than the higher one.

Note that the present invention is not limited to the above-described embodiments, and can be variously modified at the implementation stage without departing from the gist thereof. Moreover, each embodiment may be implemented in combination as appropriate, and in that case, the combined effect can be obtained. Furthermore, the embodiments described above include various inventions, and various inventions can be extracted by combinations selected from the plurality of constituent features disclosed. For example, if a problem can be solved and an effect can be obtained even if some constituent features are deleted from all the constituent features shown in the embodiment, the configuration from which these constituent features are deleted can be extracted as an invention.

DESCRIPTION OF SYMBOLS 10... Heating evaporator, 20... Chemical liquid container, 21... Container main body, 22... Liquid absorption wick, 30... Heating evaporator main body, 40... Heating element unit, 41... Heating element, 41a... Upper end, 46a... Upper end, 50... Heat generating element support part, 51... Storage part, 54... Second body part, 55... First upper wall part, 56... Flange part, 57... Engagement part, 58... Vent hole, 58a... First vent hole , 58b...second ventilation hole, 58c...third ventilation hole, 60...cover, 60a...inner surface, 61...third trunk, 61a...inner surface, 62...second upper wall portion, 62a...inner surface, 62b...lower end, 63...transpiration port, 64...rib, 64a...first lower end, 64b...first upper end, 64c...second lower end (lower end).

Claims (3)

A container including a container body that stores a liquid, and a liquid absorbent core that is partially housed in the container body and partially exposed outside the container body;
a heating unit that heats a portion of the liquid absorbent core located outside the container body;
It is removably attached to the container body, houses at least the portion of the liquid absorbent wick exposed outside the container body and the heating section, has an opening formed in the upper part, and extends downward from the opening on the inner surface. At least a portion of the continuous range is configured such that the area of a region surrounded by the inner surface in a cross section perpendicular to the vertical direction of the range gradually decreases upward, and A plurality of ribs configured in a spiral shape converging toward the opening are provided, and the lower ends of each of the plurality of ribs are at the same height position as the upper end of the heating section, or at the same height as the upper end of the heating section. a cover placed at a lower height than the top end ;
Heating evaporator equipped with. The height of each of the plurality of ribs from the inner surface in a direction perpendicular to the vertical direction gradually increases from the upper end to the lower end of the region of the inner surface where each of the plurality of ribs is formed.
The heating evaporator according to claim 1. comprising a support part that covers the lower end of the cover and supports the heating part,
The support part has a hole in which a part of the liquid absorbent wick that extends outside the container body is arranged, and a plurality of ventilation holes arranged in a circumferential direction of the hole.
The heating evaporator according to claim 1.