JPH0430741A - Heat-generating device for electric mosquito-repellent tool - Google Patents

Abstract

PURPOSE:To obtain the subject device capable of mass production in a low cost by installing plural thermistors having positive character and enabling to charge electric current between insulating part materials in the vicinity of an inserting hole for a sucking wick of an agent solution, in a rear face of a heat-receiving board loading a mosquito-repellent mat, fumigated with electric heating. CONSTITUTION:A wick-inserting hole 7 having a diameter formable a gap for transpiration around an agent solution-sucking wick is set at a center part in a pierced state on a rear face of a heat-receiving board 1 having a mat-loading plane 11 loading a mosquito-repelling mat fumigated with electric heating, and an insulating board 2 is superposed at a lower face of the heat-receiving board 1. Then, an upper attaching board 3 connecting spring terminals 31 and 32 with an electrically connecting board 33 is installed between the insulating board 2 and plural thermistors 4 having positive character and enabling to charge electric current, thus a lower attaching board 5 connecting attaching terminals 51 and 52 with an electrically connecting board 53 is installed on a lower face of the thermistor having positive character. An insulating box 6 is provided under a lower face of the lower attaching board 5 to form a heat- generating device for an electric mosquito-repellent tool.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a photothermal device for an electric mosquito repellent base.

(Prior technology) Electric mosquito repellents include a mat TSM type in which a mosquito repellent cloak containing insecticidal ingredients is heated on a heating plate, and a mosquito repellent in a container that is sucked up by a suction wick and then heated and evaporated. Chemical solution M# that made it so! 1. Both types use an electrically heated heat-generating device to smoke and disperse Ik, but since the temperature conditions are different between Fumo and M-san, the former The heat generating device used in the electric mosquito repellent of the 77-tot fumigation type has a flat plate configuration in which a heater is in contact with two sides of the heat receiver 6 on which the mosquito repellent mat is placed. The heating device is
The suction wick is inserted, and a wick insertion hole of a size that allows a radix gap to be formed around the wick is provided through the wick, and heating is performed from the periphery of the wick insertion hole.

(Problem to be Solved by the Invention) As described above, the heating device for the electric mosquito repellent has different heating temperature conditions depending on whether the mosquito repellent cloak is heated and fumigated or the chemical solution is heated M1i. It is necessary to manufacture them separately, which has the disadvantage of poor economic efficiency.

In addition, when heating and fumigating a mosquito repellent mat by placing it on a flat heating device, the central part of the heating device is higher than the periphery, so the central part of the mosquito repellent mat is fumigated intensively. Average and effective fumigation cannot be expected, and when the chemical solution sucked up with the wick is heated from the surroundings to make it radix, the radix chemical solution will condense on the upper surface of the periphery of the wick insertion hole and will not evaporate. As a result, there was a drawback that there was a large loss of radix-based chemical solution.

In order to eliminate these drawbacks, we have created a mosquito repellent mat that is fumigated by electric heating! A heat generating assembly sandwiching a ring-shaped positive temperature coefficient thermistor that is enabled to conduct electricity is fixed between insulating members on the back side of the heat receiving plate that forms the plane of the device, and a wick for sucking up the chemical liquid is inserted into the center of each. We have developed a heating device for an electric mosquito repellent that has a core insertion hole that is large enough to form a transpiration gap around the mosquito repellent, and we have developed a heating device for an electric mosquito repellent that can be used in both the mat fumigation type and the chemical liquid transpiration type. By simply using a heat-generating assembly with a ring-shaped positive temperature coefficient thermistor sandwiched between upper and lower oscillating plates, there is a difference between the mat smoking type, which requires a relatively high temperature, and the chemical liquid evaporation type, which requires a relatively low temperature. Obtaining temperature conditions proved difficult.

The present invention is designed to be able to be used as a heat generating device for a fumigation type electric mosquito repellent and as a heat generating device for a radix type electric mosquito repellent under any temperature conditions without any problem. When used, the mosquito repellent mat can be averagely and effectively fumigated at a relatively high temperature, and when used as a transpiration type electric mosquito repellent, the sucked up chemical solution can be fumigated at a relatively low temperature. The purpose of the present invention is to provide, at a low cost, a heat generating device for an electric mosquito repellent that can effectively evaporate without causing dew condensation.

(Means for Solving the Problems) In order to achieve the above object, the heating device for an electric mosquito repellent of the present invention is provided with a mosquito repellent mat to be fumigated by electric heating, and a receiving device having a mat device flat surface on which a mosquito repellent is placed. On the back side of the base, place several positive characteristic thermistors between the insulating members on the scrap side of the core insertion bracket shown below, and fix the heat generating assembly. It is characterized by having a core insertion hole of a size that forms a gap around the core for sucking up the chemical liquid inserted into the part, and is particularly compatible with the position where a positive temperature coefficient thermistor is installed. Yes, 2 #1. The size and mutual spacing of the stopper resistors were set and arranged so that the temperature at the center was 140°C ± 10°C and the temperature at the core insertion hole was 125°C ± 10°C. It was designed as a heating device for a mosquito repellent.

(Example) Next, an example of the heat generating device for an electric mosquito repellent according to the invention will be described based on side A.

Fig. 1 is an exploded perspective view showing a partially cut away heating device for an electric mosquito repellent according to a preferred embodiment of the present invention, and Fig. 2 is a cross-sectional view of the same in an assembled state. Fig. 3 is another embodiment. FIG. 4 is a partially cutaway view showing the state of use.

1 in the figure is a stainless steel heat receiving plate, which allows a rectangular mosquito repellent mat to be fumigated by electric heating.
To4! ! ? +7 side 11 is formed, and on the central department side,
M around the suction core! f! 1. A cylindrical body 17 with a straight core insertion hole 7 formed therein and a holding frame 14 with a holding claw 13 hanging from a pair of opposing edges of the mat mounting surface 11 is provided. It has a structure in which the locking leg work 6 is formed by bending and punching out the locking pawl 15 to stand up.

Reference numeral 2 denotes an insulating plate made of aluminum porcelain superimposed on the lower surface of the heat receiving plate 1, and a cylindrical body insertion hole 21 into which the cylindrical body I7 of the heat receiving plate 1 is inserted is provided in the center.

Reference numeral 3 denotes a swing plate made of stainless steel disposed between the insulating plate 2 and the two positive temperature coefficient thermistors 4 described later, which connects the spring terminals 31 and 32 with each other through a conductive plate 33. It has a structure in which a first connection terminal 34 for conducting electricity is vertically provided on the edge of the terminal.

4.4 is the resistance temperature characteristic C, P, (Curie-Bond)
This is a 180° C. positive characteristic thermistor, which has a thickness of 3 mm and a diameter of 8 mm.

Reference numeral 5 denotes a lower plate made of stainless steel laid on the lower surface of the PTC thermistor 4, in which the contact terminals 5152 are connected to each other by a conduction plate 53, and a second connection terminal for energization is attached to the edge of the conduction plate 53. 54 is installed vertically.

Reference numeral 6 denotes an insulating box that comes into contact with the lower surface of the heat receiving plate 1 via the insulating plate 2 and is held and fixed by the holding claws 13, and is made of an insulating material made of alumina porcelain and has a core insertion hole 61 in the center. A housing recess 62.63 for accommodating a positive temperature coefficient thermistor 4.4 is formed on the left and right sides of the accommodating recess 62.63 connected to a shallow groove 64 for the upper diaphragm and a deep groove 65 for the lower diaphragm. A through hole 66 for the first connection terminal 34 of the upper diaphragm 3 and a through hole 67 for the second connection terminal 54 of the lower diaphragm 5 are provided at the bottom of the shallow plate groove 64 and the deep groove 65 for the lower diaphragm. has been done.

Each of the above-constructed members is sequentially assembled from the lower member in the disassembled state shown in FIG. 1 to the state shown in the sectional view of FIG. 2. That is, the accommodation opening of the insulation box 6! 16263 and the deep groove 65 for the lower diaphragm 65, and after laying the lower diaphragm 5 and inserting the second connection terminal 54 into the through hole 67, the housing recess 62.
A positive temperature coefficient thermistor 4.4 is accommodated in 63, the upper vibration plate 3 is stacked, and the first connection terminal 34 is inserted into the through hole 66.
Further, the insulating plate 2 is stacked on the upper vibration plate 3, and the insulating box 6 is closed to form a heat generating assembly. Then, this is housed in the holding frame 14 in close contact with the back surface of the heat receiving plate l with the cylinder 17 being inserted into the core insertion hole 61 of the insulating pole and box 6, and the holding claw 13 of the heat receiving plate l By enclosing it, it becomes a heat generating device.

The heat generating device configured above has a thickness of 3 mm and a diameter of 8 cm.
Resistance temperature characteristics c, p, (Curie point)) 180
℃ positive temperature coefficient thermistors 4.4 are arranged on the left and right with the thickness of the boundary wall between the core insertion hole 61 and the accommodation recess 62.63 being 3 to 41 layers. 77 points corresponding to @, the temperature on the surface 11 is 140
℃±10℃, and the temperature of the core insertion hole 7 is 125℃±1.
It can be 0°C.

Incidentally, if the heat-receiving temperature of the mat is below 130°C, the insecticidal active ingredient impregnated into the mat will be too low to be able to be fumigated uniformly, and if it is above 150°C, the insecticidal active ingredient impregnated into the mat will not be able to be fumigated evenly. It is not suitable for practical use because it is not possible to smoke for a long time because the smoke is excessively high.

Furthermore, if the temperature of the core insertion hole of the chemical solution wick is below 115°C, the temperature will be too low and will not be suitable for M dispersion of the chemical solution.
If the temperature is 135°C or higher, the temperature will be too high and the chemical solution will evaporate in excess, making it unsuitable for practical use.

In the above embodiment, a case was explained in which the cylinder 17 was squeezed out at the center of the heat receiving plate l. However, as shown in FIG. If the core is joined to the insulation box 6 in a caulking manner, the heat conduction resistance of the joint can be increased and the temperature of the core insertion hole can be lowered, and the effects described below can be achieved. I can do it. In Fig. 3, the symbols of each part are as follows.
This shows the same thing as the previous embodiment, and individual explanations will be omitted.

The electric mosquito repellent heating device H assembled in this way is
As shown in FIG. 4, it is used by being incorporated into an electric mosquito repellent consisting of an electric mosquito repellent main body A and a cover B.

1) The electric mosquito repellent main body A of the electric mosquito repellent has a ventilation window e formed on the outer periphery of a simple leg d that accommodates a medicinal solution container C in which a medicinal solution is sucked up by a suction wick a. fart<
A supporting annular bottom g is formed by integrally forming the cover crowning part f with a folded cross section, and a screw hole i for screwing with the opening of the drug solution container C is provided in the center of the top plate made by the part d. Heat generating element mounting legs j are provided on the upper part of the top plate and protrude from the left and right sides of the screw holes j. The heating device H for an electric mosquito repellent is horizontally mounted by inserting and fixing the locking legs 16 into the heating element mounting legs j.

In addition, the force applied to the electric mosquito repellent main body A and fixed to the screw, <-B, is the electric mosquito repellent heating device H on the top Mrn.
An exposure window n is opened to expose the heat receiving plate l of the heat receiving plate l, and a protection par P is provided in the exposure window t311.

To use the transpiration-type electric mosquito repellent, as shown in Figure 4, place the chemical solution container C in the container, place the tip of the suction wick a inside the wick insertion hole 7, and energize it. Then, the chemical liquid sucked up by the suction wick a can be heated and evaporated in the wick insertion hole 7, and the heat receiving plate l of the heating device H for the electric mosquito repellent can be heated without setting the chemical liquid container C. When a mosquito repellent (pine) M is placed on the surface and electricity is applied, the mosquito repellent (pine) M can be heated and fumigated on the plane around the core insertion hole 7.

(Operations and Effects of the Invention) The heat generating device for an electric mosquito repellent of the present invention described above has an insulating material on the back U of the heat receiving plate on which the mosquito repellent mat is placed, which is smoked by electric heating. A plurality of one-characteristic thermistors, which are enabled to conduct electricity between the members, are arranged around the core insertion hole to fix the thermal assembly, and in the center,
The wick insertion hole is sized to form a 7A void around the wick after the chemical solution is inserted, so it can be used in matt fumigation formats, which require relatively high temperatures, and relatively low temperatures. It is possible to easily ensure the temperature conditions and heat dispersion balance with the required chemical solution M number formation, and a uniform temperature distribution can be obtained. It is possible to provide a heating device for an electric mosquito repellent that can also be used as a heating device for an electric mosquito repellent.

Therefore, it becomes possible to mass-produce the fumigation type electric mosquito repellent and the transpiration type electric mosquito repellent as common parts without distinguishing them, which makes it economical and easy to handle.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a partially cut away oscillation device for an electric mosquito repellent according to a preferred embodiment of the present invention, Fig. 2 is a cross-sectional view of the assembled state, and Fig. 3 is another embodiment. The fourth cross-sectional view UA of the heating device for an electric mosquito repellent according to the example is a partially cutaway view showing the state of use. l...Heat receiving plate 2...Insulating plate 3...
Upper contact root 4... Stopping characteristic thermistor 5... ■ - Contact 6... Insulation box 7... Core insertion hole 'i1-... B, A mounting surface patent Applicant King Chemical Co., Ltd. Agent Ishi 1) Other name

Claims (1)

[Scope of Claims] 1. A plurality of positive temperature coefficient thermistors are installed on the back surface of a heat receiving plate forming a mat placement plane on which a mosquito repellent mat to be fumigated by electric heating is placed so that electricity can be passed between the insulating members. The heating assembly is placed around the wick insertion hole shown below to fix the heating assembly, and the wick insertion hole is sized to form a transpiration gap around the inserted wick for sucking up the chemical solution. A heat generating device for an electric mosquito repellent. 2. Set the positive temperature coefficient thermistor so that the temperature on the mat mounting plane corresponding to the position where the positive temperature coefficient thermistor is placed is 140°C ± 10°C, and the temperature of the core insertion hole is 125°C ± 10°C. The heating device for an electric mosquito repellent according to claim 1, wherein the heating device is arranged with a set size and mutual spacing.