JPH026402B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a catalytic heater using a catalyst carrier capable of carrying an oxidation catalyst as a heating element. The catalytic heat generator is used, for example, as a heat source for various fume generators that heat and gasify insecticides and aromatics and dissipate the gas into the atmosphere, or as a heat source for simple water heaters, pots, and the like.

Conventional technology and problems Conventionally, as a catalyst carrier in the above-mentioned heat generator,
A ceramic honeycomb structure is preferably used. This catalyst carrier reacts with a flammable gas, such as an organic volatile agent such as alcohol, benzine, butane, and becomes red-hot to a high temperature.

Most of the mosquito repellents and aroma generators currently on the market are electric, so they can only be used in places where a power source can be secured, whereas the catalytic heat generators mentioned above do not require a power source. It has the advantage of being able to be used outdoors, carried around, etc., which otherwise would not be possible, and is expected to be put to good use. On the other hand, depending on the situation and conditions of use, the catalyst carrier lacks reaction stability, the startup of the combustion reaction is slow, it takes time to reach a predetermined exothermic temperature, and the so-called poor response. For some reason, this results in a loss of marketability.

OBJECTS OF THE INVENTION The present invention makes the combustion reaction of the catalyst carrier in the catalyst heat generator stable and sensitive, and quickly generates heat at a predetermined high temperature, thereby rapidly generating hume components such as insecticidal gas and aromatic gas.

The above improves the reaction delay of the catalyst carrier,
The purpose is to make more effective use of the advantages and functions of the catalytic heat generator as a heat source.

Structure and operation of the invention In order to achieve the above object, the present invention has a double structure of the heater including a reaction container and an outer container to form an annular space between the reaction container and the outer container, and an upper opening of the reaction container. A catalyst carrier is disposed inside the inner vessel, and an organic volatile agent that generates a reaction gas is disposed below the catalyst carrier to obtain a heated reaction in the reaction vessel within the outer vessel. While introducing air into the annular space in the outer container, the air in this annular space is introduced into the reaction container through an air introduction hole provided in the reaction container, that is, into the space below the catalyst carrier, thereby producing the necessary amount for the exothermic reaction. The above air introduction hole is opened in the lower space of the catalyst carrier, and an auxiliary heat source for preheating the catalyst carrier is provided at the opening position, so that the air supply and the exothermic reaction are carried out stably. This is designed to promote the introduction of air through the air introduction hole and the exothermic reaction of the catalyst carrier.

Embodiments of the Invention The present invention will be described in more detail below according to illustrated embodiments.

As described above, the present invention relates to a catalytic heater that causes a combustion reaction of a catalyst carrier with a flammable gas such as butane or alcohol.

In FIGS. 1 to 5, reference numeral 1 indicates a catalyst carrier on which an oxidation catalyst is supported by coating, impregnation, or other methods, and a typical example thereof is a ceramic honeycomb structure.

Further, 2 indicates the liquefied or solidified organic volatile agent which is the above-mentioned flammable gas. The supply of the organic volatile agent 2 to the catalyst carrier 1 is controlled by a known method of stopping and starting volatilization by opening and closing the outlet of a container containing the organic volatile agent 2 using a shutter mechanism or the like. Alternatively, the organic volatile agent 2 may be a replaceable disposable capsule type.

A heating plate 3 is installed above the catalyst carrier 1 and is heated by convection heat generated by the catalyst carrier 1. The heating of the heating plate 3 heats the hume component-carrying mat 4 impregnated with insecticides, fragrances, etc. placed on the upper surface of the heating plate, and gasifies it. A holder (band) 17 for a catalyst carrier is integrally provided on the heating plate 3, and the catalyst carrier is held by this and its relative position with respect to the heating plate is set.

In the case of a heat generator for boiling water, a means such as a pipe is provided in place of the heating plate 3 to exchange heat between the heat radiated from the catalyst carrier 1 and the liquid. In the case of jackets, the heat is either radiated to the inside of the clothing as hot air or heated as conduction heat to warm the body.

With the above configuration, the catalytic heat generator is provided with an auxiliary heat source as a combustion reaction promoting means.

The auxiliary heat source heats the catalyst carrier 1 at the time of ignition, and activates the catalyst carrier itself and the atmosphere (the gas atmosphere near the carrier in the case that accommodates the catalyst carrier 1 and the organic volatile agent 2), thereby promoting the start-up of the reaction. It has the purpose of sharpening.

A suitable example of the auxiliary heat source serving as the means for promoting the combustion reaction is an electric heat source, particularly a heat coil 5 (heating wire).

FIG. 1 shows an embodiment in which the catalyst carrier 1 is directly heated by a heat coil 5, and FIG. 2 shows an embodiment in which the catalyst carrier 1 is heated via a heating medium heated by the heat coil 5, which is the electric heat source. An example is shown below.

In both embodiments, a battery 6 supplies current to cause the heating coil 5 to generate heat. The battery 6 is connected to the switch 7.
ON, OFF, and when the switch 7 starts to be used.
By turning on the heat coil 5, the heat coil 5 generates heat and the catalyst carrier 1 is heated. Preferably, the lower end surface where the catalyst carrier 1 starts generating heat in the heat coil 5;
It also heats the bottom edge.

In FIG. 1, the heating coil 5 is brought into direct contact with the lower edge of the catalyst carrier 1 to heat it. After the heating coil 5 generates heat, the power is turned off.
Even after being turned off, it remains in an exothermic state for a certain period of time, continuing to heat the catalyst carrier 1 during this time, and aiding the reaction with the combustible gas. That is, the combustion reaction of the catalyst carrier 1 is expanded and promoted from the contact portion of the heating coil 5.

Further, in the embodiment shown in FIG. 2, the heating medium 8 heated by the heating coil 5 uses, as a suitable example, a platinum catalyst having a smaller volume than the catalyst carrier 1, and the platinum catalyst and the heating coil 5 are in close contact with each other. The parts to be assembled are prepared and used as an electric heat source to heat the catalyst carrier 1 made of the ceramic described above. As the platinum catalyst, a fibrous carrier such as asbestos or glass fiber is used. In FIG. 4, a fibrous catalyst carrier is used as a heating medium 8, and the fibrous catalyst carrier is placed in a casing (connector) 9 in which a heating coil 5 is installed, so that the heating coil 5 and the fibrous catalyst carrier are brought into close contact with each other. Prepare the component as an electric heat source, and open the opening 1 of the casing 9.
0, the structure is such that it is brought into contact with the catalyst carrier 1 and heated.

Since the heating medium 8 is in close contact with the heating coil 5 and has a small volume, it quickly generates heat and continues to generate heat for a short time. During this time, the catalyst carrier 1 is heated to activate the reaction and rapidly generate heat.

FIG. 3 shows a specific structure of a heat generating device including a switch structure for causing current to flow through the heating coil 5, which is provided to promote the initial reaction of the catalyst carrier 1 when it is ignited.

As described above, the catalyst carrier 1 unit serving as the heating source for the heating plate 4 is placed in the upper opening of the reaction vessel 11, and the organic volatile agent 2 is attached and removed from the lower opening of the reaction vessel 11 below the catalyst carrier 1. capsule 1
2 is placed outside the reaction vessel 11, i.e.
A battery 6 is replaceably provided in the outer container 14, and a heat coil 5 which is in direct or indirect contact with the catalyst carrier 1 is connected via a switch 7. The reaction vessel 11 is provided with an air introduction hole 13 for introducing air into the reaction chamber in the space below the catalyst carrier 1. Furthermore, in order to eliminate the influence of turbulent flow of outside air and statically introduce air into the reaction vessel 11, the reaction An outer container 14 is placed over the outside of the container 11 via an annular space 18 to form a double-structured container. A gas sampling hole 15 is bored in the outer container 14, and air is introduced into the reaction container 11 from the annular space 18 inside the outer container 14.

That is, while taking outside air into the annular space 18 in the outer container from the air sampling hole 15 provided in the outer container 14, the air in the annular space is introduced into the catalyst in the reaction container through the air introduction hole 13 provided in the reaction container 11. The air introduction hole 13 is introduced into the lower space of the catalyst carrier so that the air necessary for the exothermic reaction is supplied and the exothermic reaction is carried out stably. An auxiliary heat source for preheating the catalyst carrier 1 is provided in the catalyst carrier 1 to promote the introduction of air through the air introduction hole 13 and the exothermic reaction of the catalyst carrier 1.

The switch is mounted at a location where it can be operated from the outside, in the above embodiment, on the wall of the outer container 14. While the switch 7 is ON, the heating coil 5 is energized to generate heat and heat the heating medium 8. In this way, the atmosphere around the catalyst carrier 1 itself and the heating coil 5 is heated and activated.

FIG. 5 shows another example of controlling the energization of the heating coil 5. That is, the switch 7 is provided in the process of inserting the capsule 12 of the organic volatile agent 2 (on the wall of the reaction vessel 12), and the switch 7 is turned on at the protrusion 16 of the capsule 12 as shown in FIG. 5A.
Immediately before the capsule 12 is fully inserted, the switch 7 is released and the power supply to the heating coil 5 is stopped, as shown in FIG. During this time, the heating coil 5 generates heat and preheats the catalyst carrier 1 as described above.

Effects of the Invention According to the present invention, while promoting the introduction of air from the air introduction hole provided at the corresponding position using the auxiliary heat source, preliminary heat generation of the catalyst carrier is promoted, and furthermore, the heat generator is connected to the outer container and the reaction container. A double structure is used to form an annular space between both containers, and the air necessary for the exothermic reaction is introduced into the annular space in the outer container from the sampling hole, and then the reaction is carried out from the air introduction hole through the annular space. By introducing the air into the container and opening the air introduction hole into the lower space of the catalyst carrier in which the auxiliary heat source is arranged, the supply of air necessary for the exothermic reaction and the exothermic reaction are carried out stably and efficiently, It is possible to make the rise of heat generation sharper and quickly reach a predetermined temperature.

[Brief explanation of drawings]

Fig. 1 is a side view showing an embodiment of the heat generating part in the catalytic heat generator, Fig. 2 is a side view showing another embodiment of the same, and Fig. 3 includes the auxiliary heat source mechanism and its control mechanism of the catalytic heat generator. FIG. 4 is a perspective view showing an example of the auxiliary heat source mechanism; FIGS. 5A and 5B are enlarged sectional views showing other examples of the control mechanism of the auxiliary heat source mechanism. . DESCRIPTION OF SYMBOLS 1... Catalyst carrier serving as a heat source, 2... Organic volatile agent, 3... Heating plate, 4... Hume component supporting mat, 5... Heat coil constituting an auxiliary heat source, 6
... battery, 8 ... heating medium constituting an auxiliary heat source,
11... Reaction container, 12... Capsule, 13...
Air introduction hole, 14... outer container, 15... air sampling hole,
18... Annular space.

Claims (1)

[Claims] 1. In a heat generator that generates heat by burning a catalyst carrier with a flammable gas, the catalyst carrier is placed in the upper opening of the reaction vessel, and a capsule of an organic volatile agent that generates the flammable gas is placed in the lower opening of the reaction vessel. An outer container is provided outside the reaction container to form a double-structured container having an annular space between the reaction container and the outer container, and an air sampling hole is bored in the outer container to introduce air into the annular space. At the same time, the reaction vessel is provided with an air introduction hole that opens into the lower space of the catalyst carrier and takes in the air in the annular space, and furthermore, the combustion of the catalyst carrier is formed at the position where the air introduction hole opens in the reaction vessel. A catalytic heat generator characterized by being provided with an auxiliary heat source to promote the reaction.