JPH0156730B2 - - 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. Furthermore, during use, poor air flow to the catalyst sometimes caused problems in the heat generating effect.

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 by 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 catalytic heater 56 that has a catalyst 57 and a heat generating plate 58. In the catalytic heater device, the fuel 34 vaporized from the fuel storage chamber 26 is heated by the catalytic action of the catalyst 57 to heat the drug mat 70 placed on the heat generating plate 58. , inner wall member 39 and outer wall member 4
An air chamber forming body 38 comprising:
A catalyst 57 is provided within the inner wall member of the air chamber forming body 38.
A catalyst storage chamber 51 is formed to accommodate the
An air chamber 52 surrounding the outer periphery of the catalyst 57 is formed between the inner wall member and the outer wall member 40, and an air hole 6 is provided in the side wall of the case body 1 to communicate the outside with the outer periphery of the outer wall member 40 inside the case body 1. The notch 5 of the outer wall member 40 is provided in the inner wall member 39.
0, and the fitting protrusion 44 is provided with an air hole 46 that communicates the catalyst storage chamber 51 with the outer periphery of the outer wall member 40.

<Function> When not in use, air can be effectively circulated around the catalyst 57 from the air chamber 52 through the through hole 45, and the area around the catalyst 57 is kept in a dry state, so that the catalyst 57 does not generate moisture. You can do it like this. Further, even during use, the air chamber 52 and the through hole 45 can improve air circulation to the catalyst 57.

<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 top wall 3 is provided with an air hole 6.
is provided with a rectangular opening window 7.

Reference numeral 9 denotes an upper lid that can freely open and close the opening window 7 of the main body 1. The upper lid 9, which has a large number of through holes 12 as shown in FIGS. It is pivotally attached to a shaft 11 so as to be rotatable.

Reference numeral 13 denotes a bottom cover, which is removably fitted to the main body 1 through an annular protrusion 14 and an annular recess 15 at the lower end of the main body 1 so as to cool its lower end opening. The bottom cover 13 has a circular opening 16 in the center as shown in FIG.
An annular protrusion 17 is formed on the inner wall surface of the opening 16, an annular protrusion 18 and an annular recess 19 are formed concentrically, and a pair of insertion holes 20 pass through the annular protrusion 18. It is formed to be divided into two in the direction. As shown in FIG. 6, an inclined surface 21 is provided on each side of the divided end portion of the annular convex portion 18, and cut portions 22 are respectively 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 is provided with an upwardly projecting opening 28 having a male thread 27, and a cap 31 having a female thread 29 and a slot 30. The opening is designed to be removably screwed together. Further, a filament 32 is provided in the mouth portion 28 so as to divide the opening. Also upper half 2
5a is provided with a pair of radial engagement protrusions 33 projecting upwardly in a key shape corresponding to the insertion holes 20 of the bottom cover 13.
By inserting the fuel container 25 from below and rotating the fuel container 25 with respect to the bottom cover 13, the upper end of the engaging protrusion 33 passes through the inclined surface 21 and reaches the cut section 22 of the circular convex part 18. As a result, the lower 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 is inserted into the opening of the bottom cover 13. Part 16 to main body 1
The fuel storage chamber 26 protrudes into the main body 1 and communicates with the inside of the main body 1 via an 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 nonwoven fabric.

Reference numeral 38 denotes an air chamber forming body provided within the main body 1, which 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 an annular recess 43 is formed at the lower end of the inner wall 41. , the inner wall member 39 has a circular recess 43
It is removably fitted to the bottom cover 13 via the annular convex portion 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 the lower part of the inner wall 41 in two stages extending through the inner and outer sides, and also on the upper part of the inner wall 41. One level of through hole 45 is provided. The through hole 45 is the air chamber 5
2 is connected to the catalyst. Each fitting protrusion 44
is provided with an air hole 46 that penetrates the inside and outside.
A pair of radial insertion holes 47 are formed in the upper cover 42 so as to extend through the upper and lower sides, and a through hole 49 is provided in the upper and lower directions. The outer wall member 40 is formed into a cylindrical shape having a pair of radial notches 50 as shown in FIGS. upper wall 4
2, the inner wall member 39 and the bottom cover 13 are engaged with each other at their outer ends.
The outer end of the fitting protrusion 44 of the inner wall member 39 is tightly fitted into the notch 20 of the outer wall member 40. The air chamber forming body 38 forms a catalyst storage chamber 51 in the main body 1 and an air chamber 52 annularly surrounding the outer periphery of the catalyst storage chamber 51 via the inner wall 41.
The catalyst 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, and the air hole 46 of the inner wall member 39 communicates with the catalyst storage chamber 5.
1 and the outer side of the outer wall member 40 are communicated with each other. A cap 31 is removably attached to the lower end of the inner wall 41 of the inner wall member 39, as shown by the chain line in FIG. It is constructed so that it can be fitted.

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 pieces 64 so as to pull them together, and as a result, the elastic clip 65 narrows the gap between the pair of clamping plates 61 and clamps them. The plate 61 is brought into close contact with the outer surface of the catalyst 57. This elastic clip 65
An engaging portion 66 that engages with the catalyst 57 from below is bent at the lower end. 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. 15 and 16, and restricts the upward movement of the catalyst 57 with respect to the clamping plate 61. ing. Insertion protrusions 68 are protruded from both longitudinal ends of the heat generating plate 58.
is inserted into the insertion hole 47 of the desiccant storage body 38 from above, and the insertion protrusion 68 protrudes downward from the insertion hole 47.
By bending the tip end into a dogleg shape, the heat generating plate 58 is attached to the desiccant storage body 38 so that the upper end of the catalyst storage chamber 51 is opened, and the catalyst 57 protrudes downward into the catalyst storage chamber 51. has been done. 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 cutout 22 of the annular protrusion 18 as shown in FIG. When the fuel container 25 is attached to the main body 1, the fuel in the fuel storage chamber 26 is vaporized and rises from the opening 28 into the catalyst storage chamber 51, where an oxidative exothermic reaction occurs due to the catalytic action of the catalyst 57. This heat generation effectively heats the heat generating plate 58 directly or via the holding plate 61 and the locking piece 63, and heats the drug mat 70 placed on the heat generating plate 58. At this time, air is supplied to the catalyst storage chamber 51 through the air holes 6 of the main body 1 and the air chamber forming body 3.
8 through the air holes 46, and also from the air chamber 52 through the through hole 45. At this time, the through holes 49 also contribute to air circulation. 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, camping grounds, etc. It can be conveniently used as a mosquito repellent even outdoors. Also, when not in use, if the fuel container 25 is removed from the main body 1 and the cap 31 is screwed into the opening 28,
The fuel in the fuel storage chamber 26 is not wasted. At this time, the cap 31 can also be used to keep the opening at the lower end of the catalyst storage chamber 51 cold, as shown by the chain line in FIG. Air can be effectively circulated around the catalyst 57 from the air chamber 52 through the through hole 45, and the area around the catalyst 57 can be kept dry to prevent the catalyst 57 from generating moisture. During the next use, the catalytic action of the catalyst 57 can be improved and the heat generating action of the catalytic heater 56 can be smoothly performed.

The chemical mat 70 heated by the catalytic heater 56 is not limited to a chemical mat impregnated with a mosquito repellent, but may also be a mat impregnated with other insecticides,
The mat may also be impregnated with other fragrances or deodorizers, and in short, any mat that is constructed so that the chemical evaporates when heated is sufficient. Further, the number, position and shape of the through holes 45 can be changed as appropriate.

<Effects of the Invention> According to the present invention, the air chamber forming body 38 comprising the inner wall member 39 and the outer wall member 40 is provided in the case body 1, and the inner wall member 39 of the air chamber forming body 38 has A catalyst storage chamber 51 is formed, and an air chamber 52 surrounding the outer periphery of the catalyst 57 is formed between the inner wall member 39 and the outer wall member 40. Air holes 6 communicating with the outer periphery of the outer wall member 40 are provided, and the inner wall member 39 is provided with a fitting protrusion 44 that fits into the notch 50 of the outer wall member 40.
is provided with an air hole 46 that communicates between the catalyst storage chamber 51 and the outer periphery of the outer wall member 40, so that when not in use, humid air from the outside flows through the air hole 6 and the outer periphery of the outer wall member 40 inside the case body 1. , the catalyst storage chamber 51 through a complicated detour passing through the air holes 46.
This makes it difficult for the catalyst 57 to absorb moisture; Air can be passed through and thus the area around the catalyst 57 can be kept very effectively dry to prevent the catalyst 57 from forming moisture, allowing the catalyst 57 to The function can be improved and the heat generating function of the catalyst heater 56 can be smoothly performed.

In addition, during use, air is supplied to the catalyst storage chamber 51 from the outside through the air hole 6 of the case body 1 and the air hole 46 of the air chamber forming body 38, and also from the air chamber 52 through the through hole 45. The air circulation to the catalyst 57 is greatly improved.
The exothermic effect can be increased as much as possible, and the effect is significant.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and 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. The figure is a plan view of the bottom cover, Figure 6 is a sectional view taken along 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...
Air chamber forming body, 45...through hole, 52...air chamber,
56... Catalyst heater, 57... Catalyst, 58...
Heat generating plate, 70...Matsuto medicine.

Claims (1)

[Claims] 1. A catalyst heater 56 having a fuel storage chamber 26 for storing fuel 34, a catalyst 57, and a heat generating plate 58.
The fuel 3 vaporized from the fuel storage chamber 26
4 is heated by the catalytic action of the catalyst 57, and the drug mat 70 is placed on the heat generating plate 58.
In the catalytic heater device, an inner wall member 39 and an outer wall member 4 are arranged in the case body 1
An air chamber forming body 38 comprising:
A catalyst storage chamber 51 that accommodates the catalyst 57 is formed within the inner wall member 39 of the air chamber forming body 38, and an air chamber 52 that surrounds the outer periphery of the catalyst 57 is formed between the inner wall member 39 and the outer wall member 40. The side wall of the case body 1 is provided with an air hole 6 that communicates the outside with the outer periphery of the outer wall member 40 inside the case body 1, and the inner wall member 39 is provided with a notch 5 of the outer wall member 40.
A catalytic heater characterized in that a fitting protrusion 44 that fits into the outer wall member 40 is provided, and an air hole 46 that communicates between the catalyst storage chamber 51 and the outer periphery of the outer wall member 40 is provided in the fitting protrusion 44. Device.