JPH0115247B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a catalytic heater device that heats a drug mat by generating heat from vaporized fuel through catalytic action.

<Prior art> For example, as a portable mosquito repellent, a fuel such as alcohol vaporized from a fuel storage chamber is made to generate heat using an oxidative exothermic reaction caused by the catalytic action of a catalyst, and a mosquito repellent agent placed on a heat generating plate is used. There is a device that heats the medicinal substance contained in the medicinal substance, thereby evaporating the chemical in the medicinal substance without using fire or electricity, thereby making it possible to kill mosquitoes.

<Problems to be Solved by the Invention> However, in this type of conventional catalyst heater device, no consideration is given to moisture, and if the device is not used for a certain period of time, the catalyst may deteriorate due to condensation, etc. absorbed moisture and became wet, which slowed down the exothermic oxidation reaction due to the catalytic action of the catalyst during the next use, resulting in a failure in the exothermic action.

In view of the above-mentioned problems, the present invention is designed to keep the area around the catalyst dry even if the catalyst heater device is not used for a long period of time, maintain good catalytic action of the catalyst, and smoothly generate heat. This is what I did.

<Means for Solving the Problem> The technical means of the present invention for solving this technical problem includes a fuel storage chamber 26 that stores the fuel 34, and a catalyst heater 56 that has a catalyst 57 and a heat generating plate 58. The fuel 34 vaporized from the fuel storage chamber 26
In a catalytic heater device that heats a drug mat 70 placed on a heat generating plate 58 by generating heat through the catalytic action of a catalyst 57, the catalyst 5
A desiccant storage body 38 for storing a desiccant 53 is provided so as to surround the outer periphery of the catalyst 7 in an annular manner. The point is that a hole 45 is provided.

<Operation> Moisture around the catalyst 57 is constantly absorbed and stored in the desiccant 53 stored in the desiccant storage chamber 52 through a large number of through holes 45, so that the area around the catalyst 57 can be kept in a dry state.

<Embodiment> The present invention will be explained below according to the illustrated embodiment. In FIG. 1, 1 is a case body, and a side wall 2
It is formed into a cylindrical shape with a bottom and a top wall 3. As shown in FIGS. 2 and 3, this main body 1 is provided with a pair of radial projecting pieces 5 having hook holes 4, an air hole 6 is opened in the side wall 3, and a rectangular shape is formed in the top wall 3. A shaped opening window 7 is provided.

Reference numeral 9 denotes an upper lid that closes the opening window 7 of the main body 1 in an openable and closable manner, and has a large number of through holes 12 as shown in FIGS. 3 and 4.
has. The top cover 9 is rotatably attached to a pivot shaft 11 of the top wall 3 via a pair of pivots 10.

Reference numeral 13 denotes a bottom cover, which is detachably screwed onto the main body 1 via a male thread 14 and a female thread 15 at the lower end of the main body 1 so as to close the opening at the lower end thereof. As shown in FIG. 5, the bottom cover 13 is provided with a circular opening 16 in the center thereof, a female thread 17 is formed on the inner wall surface of the opening 16, and an annular protrusion 18 and an annular recess 19 are formed. The annular convex portion 18 is formed concentrically, and a pair of insertion holes 20 are formed to divide the annular convex portion 18 into two in the radial direction. As shown in FIG. 6, an inclined surface 21 is provided on each one side of the divided end portion of the annular convex portion 18, and a protrusion 22 is provided to protrude upward.

25 is a fuel container, which includes an upper half 25a and a lower half 25.
b, and these opening edges are joined together with an adhesive or the like, and a fuel storage chamber 26 is formed inside. As shown in FIGS. 7 to 9, the upper half 25a of the fuel container 25 has an upwardly projecting opening 28 having a male thread 27, and a cap 31 having a female thread 29 and a slot 30. are removably screwed together so as to close the opening. Furthermore, a filament 32 is provided in the mouth portion 28 so as to divide the opening into smaller pieces, thereby preventing fingers or the like from being inserted through the opening of the mouth portion 28. Further, a pair of radial engagement protrusions 33 are provided in the upper half 25a to protrude upwardly in a key shape, corresponding to the insertion holes 20 of the bottom cover 13. Insert the bottom cover 13 into the insertion hole 20 from below.
By rotating the fuel container 25 relative to the target, the upper end of the engagement protrusion 33 passes through the inclined surface 21 and engages with the annular protrusion 18 at a position beyond the protrusion 22. The fuel container 25 is removably assembled into the upper main body 1 via the bottom cover 13, and at this time, the opening 28 with the cap 31 removed projects into the main body 1 from the opening 16 of the bottom cover 13. , the fuel storage chamber 26 communicates with the inside of the main body 1 via the opening 28. Numeral 34 is a fuel such as alcohol stored in the fuel storage chamber 26, and is stored in a state where it is impregnated with an impregnated material 35 such as natural pulp or non-woven fabric.

A desiccant storage body 38 is provided in the main body 1 and includes an inner wall member 39 and an outer wall member 40. As shown in FIGS. 10 to 12, the inner wall member 39 has a cylindrical inner wall 41 and an upper wall 42 projecting radially outward from the upper end of the inner wall 41, and a male thread 43 is formed at the lower end of the inner wall 41. The inner wall member 39 is removably screwed onto the bottom cover 13 via a male thread 43 and a female thread 17 of the bottom cover 13. In addition, a pair of fitting protrusions 44 in the radial direction are provided on the inner wall 41 so as to protrude outward, and a large number of through holes 45 are provided in an inner and outer penetrating manner. 46 are provided. A pair of radial insertion holes 47 are formed in the upper lid 42 so as to pass through the upper and lower sides. The outer wall member 40 is the thirteenth
A pair of radial notches 5 as shown in FIG.
0, the lower end fits into the annular recess 19 of the bottom cover 13, and the upper end fits into the inner wall member 39.
The inner wall member 39 is vertically held between the inner wall member 39 and the bottom cover 13 while being engaged with the outer end of the upper wall 42 .
The outer end of the fitting protrusion 44 fits into the notch 50 of the outer wall member 40 so as to close it. Thus, a catalyst storage chamber 5 is created in the main body 1 by the desiccant storage body 38.
1 and a desiccant storage chamber 52 annularly surrounding the outer periphery of the main body 1 via an inner wall 41, the fuel storage chamber 51 communicates with the fuel storage chamber 26 of the fuel container 25 attached to the lower side of the main body 1, Air hole 46 of inner wall member 39
communicates the catalyst storage chamber 51 with the outside of the outer wall member 40. A cap 31 is removably fitted into the lower end of the inner wall 41 of the inner wall member 39 so as to close the lower end opening of the fuel storage chamber 51 with the fuel container 25 removed from the main body 1, as shown by the chain line in FIG. It is configured so that it can be done. 53 is a desiccant such as silica gel stored in the desiccant storage chamber 52.

56 is a catalyst heater provided in the main body 1;
As shown in FIGS. 5 and 16, it has a catalyst 57 and a heat generating plate 58, and the catalyst 57 is made of ceramic, platinum, etc., and is formed in a rectangular parallelepiped honeycomb shape having a large number of through holes 59 in the vertical direction. ing.
The heat generating plate 58 is formed into a rectangular plate shape from a metal plate with high thermal conductivity, and a pair of clamping plates 61 are provided on the heat generating plate 58 to protrude downward along one opposing outer surface of the catalyst 57. A pair of locking pieces 63 are protruded from each of the holding plates 61 along the other opposing outer surface of the catalyst 57 so as to be opposed to those of the other holding plate 61 . Each of the locking pieces 63 is formed with a locking portion 64 which is folded back in a dogleg shape. Holding plate 61
Similarly to the heat generating plate 58, the locking piece 63 is made of a metal plate with high thermal conductivity. 65 is an elastic clip formed in a bifurcated shape, as shown in FIGS. 15 and 1.
As shown in FIG. 6, the opposing locking pieces 63 are removably engaged with the locking portions 64 of the locking pieces 63 so as to pull each other against each other, and as a result, the elastic clips 6
5 is a pair of clamping plates 61 with a shortened interval between them.
is brought into close contact with the outer surface of the catalyst 57. An engaging portion 66 that engages the catalyst 57 from below is bent at the lower end of the elastic clip 65. Reference numeral 67 denotes a stopper provided on the clamping plate 61, which is cut and raised inward from the clamping plate 61 as shown in FIGS.
It regulates the upward movement of Insertion protrusions 68 are protruded from both longitudinal ends of the heat generating plate 58, and by inserting the insert protrusions 68 into the insertion holes 47 of the desiccant storage body 38 from above, the heat generating plate 58 is attached to the desiccant storage body 38 so as to close the upper end opening of the catalyst storage chamber 51, and the catalyst 57 projects downward into the catalyst storage chamber 51. Reference numeral 70 denotes a drug mat impregnated with a mosquito repellent drug, which is placed on the heating plate 58 and projects into the opening window 7 of the top wall 3 of the main body 1.

According to the configuration of the above embodiment, the cap 31 is removed from the mouth 28 of the fuel container 25 containing the fuel 34, and the engaging protrusion 33 is engaged with the annular protrusion 18 as shown in FIG. When the container 25 is attached to the main body 1, the fuel in the fuel storage chamber 26 is vaporized and released into the mouth part 2.
8 into the catalyst storage chamber 51, where the catalyst 5
The catalytic action of step 7 causes an oxidative exothermic reaction to generate heat, and this heat generation effectively heats the heat generating plate 58 directly or via the holding plate 61 and the locking piece 63, and the heat generating plate 58 is placed on the heat generating plate 58. The heated drug mat 70 is heated. At this time, air is supplied to the catalyst storage chamber 51 through the air hole 6 of the main body 1 and the air hole 46 of the desiccant storage body 38. Therefore, the medicine in the medicine mat 70 is evaporated by heat without using fire or electricity. For example, if the medicine mat 70 is impregnated with a mosquito repellent, it can be used in places without electrical outlets, in camping areas, etc. It can be conveniently used as a mosquito repellent even outdoors. When not in use, the fuel container 25 can be removed from the main body 1 and the opening 2
By screwing the cap 31 into the fuel tank 8, the fuel 34 in the fuel storage chamber 26 will not be wasted.
Further, at this time, the lower end opening of the catalyst storage chamber 51 can be closed using the cap 31 as shown by the chain line in FIG. The area around the catalyst 57 can be kept dry by the desiccant 53 stored in the desiccant storage chamber 52, and the catalyst 57 can be prevented from generating moisture. The function can be improved and the catalyst heater 56 can smoothly generate heat.

The chemical mat 70 heated by the catalyst heater 56 is not limited to a chemical mat impregnated with a mosquito repellent, but may also be a mat impregnated with other insecticides,
It may also be a mat impregnated with other fragrances or deodorizers, as long as it is constructed so that the chemicals evaporate when heated.

<Effects of the Invention> According to the present invention, the desiccant storage body 38 stores the desiccant 53 so as to annularly surround the outer periphery of the catalyst 57.
is provided, and the desiccant storage body 38 is provided with a large number of through holes 45 that communicate the desiccant storage chamber 52 toward the catalyst 57.
The area around the catalyst 57 can be effectively maintained in a dry state by the desiccant 53 stored in the container, so that the catalyst 57 can be prevented from generating moisture, and the catalytic action of the catalyst 57 can be improved during the next use. Therefore, the heat generating action of the catalytic heater 56 can always be performed smoothly, and the effect is remarkable.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a front cross-sectional view of the entire case, Fig. 2 is a plan view of the case body, Fig. 3 is a sectional view of the same side, Fig. 4 is a plan view of the top cover, and Fig. 5 is a plan view of the case body. The figure is a plan view of the bottom cover, Figure 6 is a sectional view taken along the line A-A in Figure 5, Figure 7 is a front sectional view of the fuel container, Figure 8 is a plan view of the same, and Figure 9 is the upper half of the fuel container. Side view of section, No. 10
The figure is a front view of the inner wall member, Fig. 11 is a plan view thereof, Fig. 12 is a half-cut side sectional view of the same, Fig. 13 is a cutaway front sectional view of the outer wall member, Fig. 14 is a bottom view thereof, and Fig. 15 is a front view of the inner wall member. 16 is a bottom view of the catalyst heater, and FIG. 16 is a side view of the same. 26...Fuel storage chamber, 34...Fuel, 38...
Desiccant storage body, 45...through hole, 52...desiccant storage chamber, 53...desiccant, 56...catalyst heater,
57... Catalyst, 58... Heat generating plate, 70... Drug mat.

Claims (1)

[Claims] 1 includes a fuel storage chamber 26 that stores the fuel 34 and a catalyst heater 56 that has a catalyst 57 and a heat generating plate 58, and stores the fuel 34 vaporized from the fuel storage chamber 26.
In a catalytic heater device that heats a drug mat 70 placed on a heat generating plate 58 by generating heat through the catalytic action of a catalyst 57, the catalyst 5
A desiccant storage body 38 for storing a desiccant 53 is provided so as to surround the outer periphery of the catalyst 7 in an annular manner. A catalytic heater device characterized in that a hole 45 is provided.