JPS6219177Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an electric fumigation insecticide for cockroaches that uses a commercial power source and has a replaceable volatilization part for insecticidal chemicals.

Conventional cockroach insecticides that volatilize insecticidal chemicals to kill cockroaches use the method of adding water or ignition to volatilize the insecticidal chemicals by burning other substances or using chemical reactions. There was nothing to evaporate using electricity.

With this type of conventional insect killer, the container, including the container, is thrown away after each use, so it becomes expensive to kill insects many times.

In addition, volatilization of chemicals is not stable, there is a lot of variation from one product to another, and the volatilization rate itself is not good.

It also uses chemical changes or combustion, so
There were drawbacks such as the volatilization of unnecessary materials other than pesticides, polluting the indoor air more than necessary.

This idea was made in view of the above-mentioned conventional drawbacks, and the volatilization section impregnated with a chemical is controllably heated by a heating section powered by a power source such as a commercial power source. To provide an economical electric fumigation insecticide for cockroaches, which uniformly and stably diffuses chemicals indoors by making a volatilization part replaceable, and whose main body can be used repeatedly.

The details of this invention will be explained below based on the embodiments shown in the drawings.

FIG. 1 is an external perspective view of an embodiment of this invention with the power cord removed, in which 1 is on the housing, 2 is below the housing, and a circular opening 1a is formed in the upper part of the housing 1. Guard 1 around it
b is supported by a guard leg 1c, and a ring 1d is horizontally formed in the upper center of the guard 1b. Inside the lower housing 2 is a heat generating part 3 which will be described later.
A control unit 9, which will be described later, is housed therein. Further, at the lowest part of the lower housing 2, legs 2a and ventilation holes 2b are arranged at an appropriate number of circumferences so that the housing can be placed stably on the floor.

The heater pot 3a of the heat generating part 3 has a cylindrical shape, and is mounted and fixed in the center of the lower housing 2 with its axis in the vertical direction so as to project upward from the opening 1a of the upper housing 1.

Reference numeral 4 denotes a volatilization section, which is formed into a cylindrical shape with an inner diameter slightly larger than the outer diameter of the heater pot 3a of the heat generating section 3. In FIGS. Move ring 1
d and is designed to be externally fitted onto the heat generating part 3. In this case, the distance between the inside of the cup 4a and the outside of the heater pot 3a is set to an extent sufficient to ensure heat conduction.

Next, the main parts constituting the electric fumigation insecticide for cockroaches of this embodiment will be explained in detail.

As shown in FIGS. 3A and 3B, the volatilization section 4 is constructed by wrapping an impregnated material 4b such as a heat-resistant cloth such as rock wool paper or nonwoven paper around the outer periphery of a cup 4a made of aluminum, for example. The impregnated material 4b is impregnated with a transpirable chemical for killing cockroaches.

The thinner the material 4b to be impregnated, the better the volatilization of chemicals. Also, the surface size of the volatilization part 4 is usually 40 mm in height.
mm, requires a cylindrical surface area of about 32 mm in diameter. Moreover, this volatilization part 4 can be replaced and discarded every time. As shown in FIGS. 4A and 4B, the heat generating part 3 has a cylindrical cup-shaped heater pot 3a made of aluminum, for example, and has a resistance wire (not shown) on the inner surface of the bottom part of the heater pot 3a.
A resistance heating element 3c similar to a cement resistor shielded with cement is housed in a circular-shaped porcelain 3b, a hole 3d is formed in the center of the bottom of the heater pot 3a, and the porcelain 3b is concentrically fixed using a fixing cement 3e. . As shown in FIG.
The heater pot 3a is arranged so that the upper part of the heater pot 3a is exposed, and together with the hole 3d, heat dissipation is made more efficient and uniform throughout the heater pot 3a.

Figure 4B shows the heat generating part 3 viewed from the bottom, and there are two terminal leads 3f pointing downward on one side of the bottom of the heater pot 3a for supplying power to the resistance heating element 3c inside the porcelain 3b. (Figure 4a) Protruding. The cement surface inside the porcelain 3b is formed horizontally, and a disc-shaped heater holder 3g whose outer periphery is inscribed inside the heater pot 3a is placed on it, and in the center of the heater holder 3g there is a heater holder 3g as shown in Fig. 5A. Fixing hole 3
A ventilation hole 3i is formed at and around the hole 3i.

As shown in FIGS. 5A and 5B, the heat generating portion 3 is supported around the inner side of the heater magnetic receiver 5 by a support protrusion 5a of the heater magnetic receiver 5 formed in a ring shape. Heater pot 3a is heater holder 3
Insert the screw 3j through the hole 3h drilled in the center of g.
It is screwed into a screw hole 5c provided in the center of the bottom portion 5b of the heater magnetic receiver 5. Note that a ventilation hole 5d is formed in the bottom portion 5b, and together with the ventilation hole 3i of the heater holder 3g, the heater pot 3a is formed from the bottom.
It is configured to allow the dissipated heat to flow upward and to prevent the adverse effects of the heat on the portion holding the heat generating part 3.

The control unit 9 that controls the heat generation of the heat generating unit 3 is mainly composed of a thermostat (hereinafter referred to as thermostat) 6, and is located below the lower housing 2 (lower part inside the container).
Below the heat generating part 3 of
A manual return type disc-shaped thermostat 6 is fixed to the bottom base 2c of the lower housing 2 as shown in Figures A and B, and the upper surface of the thermostat 6 is spaced apart from the bottom of the heat generating part 3 by a spacer 7. are taken appropriately. Although not shown, a manual return device for the thermostat 6 is provided on the bottom rear surface of the lower housing 2. This thermostat 6 can be used to keep the heat generating part 3 at an appropriate temperature and can also be used as an automatic switch.

In other words, this electric fumigation insecticide for cockroaches must be used in an unoccupied room, and the room must be sealed for about 3 hours, and it also becomes very hot (approximately 300 degrees Celsius), so it automatically shuts off after a certain period of time. It is necessary to turn off the power.

In the above, a mechanical timer or an electronic circuit may be used as the automatic switch.

Further, the upper housing 1 and the lower housing 2 are fitted at their opposing parts as shown in FIG.
It is made of heat-resistant plastic and has side surfaces 1e and 2d bulging outward in the portion facing the heat-generating portion 3, and is desired to provide heat insulation and a vent hole 2b for intake at the bottom of the bulge. There are several ventilation holes on the upper part of the housing.
f is provided, and together with the opening 1a, the air flow g passing through the vent hole 2b and the housing top 1,
The air flow r along each outer periphery of the lower housing 2 (container) creates a strong upward air current, making the effect of stripping and volatilizing the chemical from the volatilization part 4 even more effective.

Moreover, the cup 4a is connected to the heater pot 3 of the heat generating part 3.
A is placed upside down with the bottom part 4c facing upward to prevent heat from escaping to the top, ensure a high and uniform surface temperature of the volatilization part 4 with low power, and is very suitable for heat volatilization of chemicals. creating a situation.

In addition, as shown in Figures 2 and 7, the power cord 8
Power is supplied from a commercial power source etc.

In this embodiment, the electric circuit of the control unit 9 is configured as shown in FIG. 8, so that the resistance heating element 3c of the heater pot 3a, the contact 6a of the manually resettable thermostat 6, and the commercial power supply AC are connected in series to form a closed circuit. When the heater pot 3a reaches a suitable temperature, the thermostat 6 operates, the contact 6a is turned off, and the heater 3c is turned on.
The power supply to the heater is cut off. By appropriately setting the heating speed by the resistance heating element 3c, the amount of chemicals evaporated, and the OFF position of the thermostat 6, it can also function as an automatic switch, eliminating the need for a timer. It also has a function to prevent overheating, but for added safety, a temperature fuse F can be inserted into the circuit.

Also, by inserting a chemical sensor in series with the thermostat 6, the heating unit 3 may be turned on and off according to the amount of vaporized chemicals.

Next, in order to use the electric fumigation insecticide for cockroaches configured as described above, for example, the impregnated material 4b impregnated with 1 g of permethrin as an insecticidal chemical is used.
(Fig. 1) is wrapped around the heater pot 3a of the heat generating part 3 with the bottom part 4c facing upward, and then the power cord 8 is connected to the commercial power supply AC, and when the thermostat 6 is manually reset, the resistance heating element 3c is heated, and the chemical impregnated into the impregnated material 4b evaporates. Normally, the time required for vaporization is about 10 to 20 minutes, so after that, the thermo 6 is automatically turned off.
All you have to do is keep the room sealed for the desired time.

In addition, in the above, as the resistance heating element 3c
By using a PTC (positive characteristic thermistor) alone or in combination with a normal nichrome wire heater, etc., it is possible to operate at a constant temperature and constant power regardless of fluctuations in outside temperature or power supply voltage. Moreover, a direct plug can be provided in the lower housing 2 without using the power cord 8.

As mentioned above, this idea has a simple structure,
A volatilization section consisting of a cup made of aluminum or the like wrapped around the outer periphery of rock wool paper or the like impregnated with an insecticidal chemical that is easy to replace; a heat generating section that generates heat when electricity is applied to heat the volatilization section; comprising a control unit that controls the energization to the heating part according to at least one of the following parameters: the temperature of the heat generating part, the volatilization amount of the volatile chemical, and the energization time, and these are housed in a ventilated housing, Since it is configured to volatilize insecticidal chemicals by connecting to a power source, there is no volatilization of anything other than the chemicals used, and no unnecessary odor gas is generated.

It can be used repeatedly by replacing only the volatilization part or adding only chemicals, and even if the initial cost is high, it is more economical than other conventional methods after the second use.

Since the cup is placed over the heat generating part with its bottom facing up, the temperature distribution in the volatilization part is small and the chemical volatilization efficiency is high.

In addition, the energization of the resistance heating element is controlled by the temperature of the resistance heating element.
Since the chemical is controlled according to the amount of volatilization, the current application time, etc., volatilization is performed at a constant temperature with little variation for a certain period of time, so volatilization is uniform and the diffusion of the chemical is good.

[Brief explanation of the drawing]

The drawings all show this invention: Fig. 1 is an overall perspective view of one embodiment, Fig. 2 is a partially cutaway perspective view showing the interior and volatilization part under the housing except for the upper part of the housing, and Fig. 3 Figure A is a plan view of the volatilization section, Figure B is a side view showing a partial cross section, and Figure 4.
Figure A is a front view showing a partial cross section of the heat generating part, Figure B is a bottom view, Figure 5 A is a plan view of the heater receiver with the heater pot placed on it, and Figure B is a partial cross section. 6 shows the internal structure excluding the heat generating part under the housing, A is a plan view, B is a sectional view taken along line A-A in A, and C is a section also taken along line B-B. FIG. 7 is a side view showing a cross section, d is a partial sectional view taken along line C-C in A, FIG. , FIG. 8 is an electrical circuit diagram. 1...Housing top, 1f...Vent hole, 2...
Lower housing, 2b...Vent hole, 3...Heating part,
3a... Heater pot, 3c... Resistance heating element, 4
...Volatilization part, 4a... Cup, 4b... Material to be impregnated, 4c... Bottom part, 9... Control part.

Claims (1)

[Scope of utility model registration request] The heater pot has a heater pot containing a resistance heating element inside and is adiabatically installed at the bottom of the housing with ventilation holes, and a cup wrapped around the outer circumference of a material to be impregnated with an insecticidal chemical. A volatilization part is formed on the outside of the heater pot so as to be able to be fitted and removed so as to cover the heater pot with its bottom facing up, and electricity is applied to the resistance heating element according to the temperature of the heating part, the amount of volatilization of the chemical, and the time period during which the electricity is applied. an electric fumigation insecticide for cockroaches, comprising: a control section that performs control according to at least one of the parameters, and is configured such that the chemical is volatilized by the heat generated by the heat generating section.