JPH0343996Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a heating evaporation plate that evaporates chemicals such as insecticides, fragrances, and bactericides into the air.

BACKGROUND ART Conventionally, as a heating evaporation device for evaporating a drug, for example, an electric mosquito repellent device for killing mosquitoes is known.
In addition, as a transpiration plate that contains a long-term drug in compartments, for example, as in Utility Model Publication No. 7009, a disk-shaped insecticidal board with compartments is made rotatable, and the drug is heated and evaporated in each compartment. There is something.

Problems that the invention aims to solve However, in the former publication of Utility Model Publication No. 44-7009, the partitioned disc-shaped insecticidal board was simply cut out and partitioned with ventilation holes, making it impractical for practical use. When one compartment is heated, the drug evaporates from this compartment, creating a concentration difference between adjacent compartments.Since the adjacent compartments are connected without any special partitions, capillary tubes flow through this connection. Due to the phenomenon and concentration difference, the drug moves from an adjacent section with a high concentration to a heated section with a low concentration, and more than the set amount of drug transpires from this section, making it impossible to control the transpiration of a certain amount of drug. There is. Furthermore, when this adjacent compartment is heated, the chemical has already migrated and the charged amount of the chemical has been used up, so the chemical cannot be evaporated sufficiently, resulting in a reduction in insecticidal efficacy. Furthermore, as mentioned above, if the structure is simply connected by providing ventilation holes, sufficient strength cannot be obtained because the connected part becomes significantly thinner than the other parts, and
When an internal application such as thermal deformation is applied, stress concentrates on this thin connecting part, causing bends and tears, causing the transpiration plate to warp or bend, making it difficult to make sufficient contact with the heated part. There were also disadvantages such as insufficient evaporation of the drug.

Means and action for solving the problem Evaporation pieces are stored in a large number of compartments formed in the main body, so that the chemical does not transfer from adjacent evaporation pieces during heating and evaporation, and the rigidity is increased to prevent warping. , to prevent bending.

Embodiment FIG. 9 is a perspective view of an electric evaporation device, in which a transpiration plate mounting portion 2 is rotatably mounted on a rectangular hollow body 1, and the transpiration plate mounting portion 2 hinges a lid 4 to a cylinder 3. An annular protrusion 6 is integrally formed in the center of the bottom plate 5, and a heating element 7 is provided on one side, and the cylindrical body 3 has an opening 8 and a notched recess 9 facing each other in the radial direction. The lid 4 has a cutout window 10 facing the heating element 7 and a protrusion 1 that fits into the cutout recess 9.
1 is formed.

A cord 12 is wound around the lower part of the cylindrical body 3, and when the cord 12 is pulled, the cylindrical body 3 rotates and is fed out, and when the cylindrical body 3 is rotated, the cord 1
2 can be wound up.

The annular projection 6 is provided with an elastic locking member, such as a spring 13, facing the heating element 7, and a lamp 14.

The heating evaporation plate 20 according to the present invention has a main body 25 in which a ring-shaped outer frame 21 and an inner frame 22 are radially connected by a plurality of connecting members 23 to form a large number of partitioned storage sections 24 at equal intervals in the circumferential direction. and a transpiration piece 26 stored in each storage section 24,
The inner frame 22 is fitted into the outer periphery of the annular protrusion 6, the outer frame 21 is fitted into the inner periphery of the cylindrical body 3, and one of the evaporation pieces 26 is mounted so as to be positioned on the heating element 7. , the outer frame 21 can be rotated by pressing it through the opening 8, and can be easily taken out by pressing the outer frame 21 through the opening 8 and the notch recess 9.

In addition, on the inner periphery of the inner frame 22, locking recesses 27 with which the springs 13 engage are formed at intervals in the circumferential direction in the same number as the respective housing sections 24, and the locking recesses 27 and the springs 13 are heated. The rotation direction of the transpiration plate 20 is restricted to one direction, and the rotation angle is regulated so that the evaporation plate 26 is always positioned on the heating element 7.

1 to 7 are detailed views of the heating evaporation plate 20, and an upper support piece 28 is integrated with the upper part of both sides in the longitudinal direction of the connecting member 23, that is, the upper part of the inner circumference of the outer frame 21 and the upper part of the outer circumference of the inner frame 22. formed, and the connecting member 23
A protrusion 29 for preventing lateral displacement of the evaporation piece 26 is integrally formed in the longitudinally intermediate portion of the frame, and lower support pieces 30 are integrally formed at the lower inner circumference of the outer frame 21 and the outer circumference lower part of the inner frame 22. The lower support piece 30 has a downwardly inclined side surface 30a and a horizontal upper surface 30b.

Because of this, if the evaporation piece 26 is pushed into the housing part 24 from between the opposing lower support pieces 30, 30, the lower support piece 30 will be enlarged and deformed and can be easily inserted, and can be supported by the upper surface 30b of the lower support piece 30. At the same time, the upper support piece 28 prevents it from slipping out,
The protrusion 29 prevents lateral displacement and allows the evaporation piece 26 to be housed and supported in a stable state.

As shown in FIG. 7, the distance between the lower surface 28a of the upper support piece 28 and the upper surface 30b of the lower support piece 30, that is, the height of the storage section 24, is larger than the thickness of the evaporation piece 26, so that the evaporation piece 26 is stored. Since it can move up and down within the section 24, even if the mounting positions of the heating element 7 and the heating evaporation plate 20 are slightly shifted in the vertical direction, the evaporation piece 26 will surely contact the heating element 7 as shown in FIG.

Furthermore, since the main body 25 is made by connecting the outer frame 21 and the inner frame 22 with a large number of radial connecting members 23, when an external force or internal stress such as thermal strain occurs, the force is transferred to the main body through the connecting members 23. It can be distributed throughout the body to prevent warping or bending of the main body 25, and each transpiration piece 26
deformation can be prevented.

Further, the evaporation piece 26 has a slightly smaller shape than the storage part 24, and only the peripheral surface of the evaporation piece 26 is in contact with the protrusion 29, and the contact area is small, so that not much heat is transferred to the main body 25. Moreover, a gap is created between the inner surface of the storage portion 24 and the evaporation piece 26, and the heated air flows upward through the gap as an upward current, which improves the diffusion of the drug.

In the embodiments described above, the material of the main body 25 may be any material such as polymeric material, metal, ceramic, etc., as long as it can withstand heat during use and prevents the transfer of chemicals from the transpiration pieces.

Furthermore, the shapes of the upper support piece 28 and the lower support piece 30 are not limited to those shown in the figures;
8 may be tilted and the transpiration piece 26 may be inserted from the upper support piece 28, or the upper and lower support pieces 28, 30 may be inserted at an angle.
may be provided at the upper and lower parts of the connecting member 23.

Further, the lower support piece 30 or the upper support piece 28 may be bent, melted, attached, etc. after the evaporation piece is installed to support the evaporation piece.

Further, the position of the locking recess 27 is not limited to the inner frame 22, but may be provided in the outer frame 21, and a locking member such as a spring may be provided oppositely.

Effect of the invention: The storage section 24 is divided into sections for each evaporation piece 26.
Therefore, when one evaporation piece 26 is heated and evaporated, the drug does not transfer from an adjacent evaporation piece, and stable evaporation of the drug is possible.

Further, since the main body 25 and the evaporation piece 26 are made separate, the main body 25 and the rigidity can be increased, and the evaporation piece 26 can be prevented from warping or bending, and the drug can be sufficiently evaporated.

Furthermore, the storage section 24 opens on the upper and lower surfaces of the main body, and the evaporation piece 26 has a slightly smaller shape than the storage section 24 and opens on the upper and lower surfaces of the main body.
The storage portion 24 is supported between the lower support pieces 28 and 30.
Since there is a gap between the inner surface of the body and the evaporation piece 26, the evaporation piece 26 can be efficiently heated from the bottom by the heating element, and the air at the bottom of the body is heated and flows upward through the gap as an upward current. , the chemical in the evaporation piece 26 can be efficiently evaporated and diffused well.

Moreover, since the main body 25 is ring-shaped,
Not only can it be rotatably supported on the heating transpiration tool using the inner frame 22 as a guide, but there is also a gap between the evaporation piece 26, the upper support piece 28, and the lower support piece 30, so that the evaporation piece 26 can move up and down slightly. , body 2
Even if the mounting position of the heating element and the heating evaporation plate 20 is slightly shifted in the vertical direction when rotating the transpiration plate 26 to bring it into contact with the heating element, the evaporation element 26 will move up and down to ensure that it is placed on the heating element. can be contacted.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a plan view, FIG. 2 is a sectional view, FIG. 3 is a perspective view, and FIG.
Figure 5 is an enlarged plan view and sectional view of the storage section, Figure 6 is
Figure 7 is an enlarged plan view and cross-sectional view of the evaporation piece installed,
Figure 8 is a sectional view showing the positional relationship with the heating element, Figure 9
The figure is a perspective view of the electric vaporization device. 24 and 33 are storage parts, 25 is a main body, and 26 is a transpiration piece.

Claims (1)

[Claims for Utility Model Registration] Ring-shaped outer frame 21 and ring-shaped inner frame 22
are connected by a plurality of connecting members 23 to form a main body 25 having a plurality of storage portions 24 opened on the upper and lower surfaces at intervals in the circumferential direction. Support pieces 30 are provided spaced apart from each other in the vertical direction, and the storage portion 2 is provided in the storage portion 24 of the main body 25.
4, and thinner than the vertical distance between the upper support piece 28 and the lower support piece 30.
The heating evaporation plate is housed so as to face between the upper support piece 28 and the lower support piece 30.