JPH0749131A - Pest control method for electric heating sheet - Google Patents

Abstract

(57) [Abstract] [Purpose] Eliminate pests easily and reliably by using a heating element provided in an electric heating sheet. Fire caused by overheating,
Prevents low temperature burns. [Structure] Pest control is performed by using an electric heating sheet whose maximum temperature on the unoccluded surface is set to a low temperature that does not cause burns. The electric heating sheet main body 1 provided with a heating element is put in a heat insulating bag 30, or the electric heating sheet main body 1 is sandwiched between heat insulating materials to close the surface of the electric heating sheet main body 1 with the heat insulating bag 30 or the heat insulating material. The temperature controller controls the heat generation operation by the heat generator so that the surface temperature of the electric heating sheet main body 1 in the state where the surface is covered with the heat insulating bag 30 or the heat insulating material becomes the pest control temperature for a certain period of time.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to an electric heating sheet such as an electric carpet or an electric blanket.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7, an electric heating sheet such as an electric carpet or an electric blanket comprises an electric heating sheet body 1 having a heating element and a temperature controller 2 for controlling heat generation by the heating element. In the case of the spread type, it is laid on a floor material F such as a floor plate or tatami mat, and the stain prevention cover 3 is covered on the upper surface of the electric heating sheet body 1 as necessary. Has become. By the way, when pests such as dust mites and mites are generated on such an electric heating sheet, conventionally, the surface of the electric heating sheet is exposed to sunlight to exterminate the sun or pests that live by performing insecticide extermination. Although it was disinfested, there was a problem that the extermination operation was troublesome and the insecticidal effect was not sufficient, and the insecticide extermination caused environmental pollution such as kitchen and living room due to the insecticide. .

Therefore, as a method for exterminating insect pests easily and without causing environmental pollution, it is considered to exterminate insect pests by maximizing the temperature setting of the heating element provided in the electric heating sheet for continuous heating. However, in general,
The maximum set temperature of the electric heating sheet is a temperature at which low-temperature burns do not occur (for example, 50 ° C. or lower), and there is a problem that a sufficient insecticidal effect (acaricidal effect) cannot be obtained. That is, when the temperature setting of the electric heating sheet is maximized, the temperature of the portion of the electric heating sheet main body 1 close to the heating element reaches the lethal temperature of mites (40 to 50 ° C.), Since the surface of No. 1 (for example, the tip of the raised pile) is about 20 to 30 ° C., the mite D escapes to the vicinity of the tip of the pile P and survives as shown in FIG. There was a problem that the effect could not be obtained.

Therefore, there has been considered a method of setting the temperature so that the surface temperature of the electric heating sheet body 1 becomes about the lethal temperature (40 to 50 ° C.) of the mite D, for example, Japanese Patent Laid-Open No. 62-77525. As disclosed in Japanese Patent Laid-Open Publication No. 62-84231, a heat-generating element for exterminating insect pests, which is energized at a temperature level higher than that in normal use for a predetermined time, is provided. In some cases, the pests were exterminated by increasing the amount of the pests compared with the normal use.

[0005]

However, in such a conventional pest control method, in order to make the surface temperature the pest control temperature, the temperature setting of the electric heating sheet is set to 5.
Since the temperature must be set to be significantly higher than 0 ° C., there is a concern that a fire or low temperature burn may occur due to overheating if an erroneous operation is performed during normal heating.

The present invention has been made in view of the above points, and it is an object of the present invention to easily and surely exterminate harmful insects by using a heating element provided in an electric heating sheet. The object of the present invention is to provide a method for exterminating insect pests of an electric heating sheet that does not need to raise the set temperature so much and does not cause a fire due to overheating or a low temperature burn.

[0007]

According to a first aspect of the present invention, there is provided a method for controlling harmful insects in an electric heating sheet, wherein the maximum temperature of an unoccluded surface is set to a low temperature that does not cause burns. Put the body of the electric heating sheet in a heat insulating bag and close the surface of the body of the electric heating sheet with a heat insulating bag. The surface temperature of the body of the electric heating sheet when the surface is covered with the heat insulating bag is a pest for a certain period of time. It is characterized in that the heating operation by the heating element is controlled by the temperature controller so as to reach the extermination temperature.

According to a third aspect of the present invention, there is provided a pest control method for an electric heating sheet, wherein the maximum temperature of the unoccluded surface is set to a temperature that does not cause low-temperature burns. The surface of the electric heating sheet body is covered with the heat insulating material by sandwiching the sheet body between the heat insulating materials, and the surface temperature of the electric heating sheet body when the surface is covered with the heat insulating material becomes the pest control temperature for a certain period of time. As described above, the heat generation operation by the heating element is controlled by the temperature controller.

[0009]

According to the method of the present invention, as described above, the main body of the electric heating sheet is placed in the heat insulating bag and the surface of the electric heating sheet is closed by the heat insulating bag, or the main body of the electric heating sheet is sandwiched between the heat insulating materials to generate electricity. The surface of the heat collecting sheet is covered with a heat insulating material, and the temperature is raised when the surface is covered with a heat insulating bag or a heat insulating material, so that heat energy can be effectively used without adding a special heating element. , It is possible to easily raise the surface temperature to the pest control temperature by using the heating element of a general electric heating sheet that does not cause low temperature burns during normal use, and it is possible to control pests at about the normal use temperature. There is no risk of fire due to overheating or low temperature burns, and power consumption can be reduced. In addition, the temperature of the heating element is controlled so that the surface temperature of the main body of the electric heating sheet becomes the pest control temperature by closing it with a heat insulating bag or heat insulating material, and the pests (such as mites) can be eliminated without any escape place. You can do it.

[0010]

EXAMPLES The present invention will be described in detail below with reference to examples. Figure 1
2 shows an example of closing the surface of an electric heating sheet used as an electric carpet or an electric blanket,
In the case of FIG. 1, a heat insulating bag 3 such as a plastic bag or a foam insulating material bag
The electric heating sheet body 1 is inserted in the
In the case of 1, the heat insulating material 31 having a mesh-like surface (to the extent that mites do not escape) like a futon or a mattress is arranged in a sandwich shape above and below the electric heating sheet body 1.

FIGS. 3 and 4 show a temperature controller 2 for controlling the heat generating operation of the heating element 1a. The temperature sensor 10a detects the temperature of the proper place of the electric heating sheet body 1 and the temperature detecting circuit 10 described above. A temperature setting circuit 11 that determines whether the detected temperature has reached the set temperature set by the temperature setting means and outputs an ON / OFF signal for the heating element 1a.
And a relay drive circuit 12 for driving a relay by the ON / OFF signal and for turning on / off the heating element 1a by the relay contact 12a, and a basic circuit is formed in the temperature controller 2. Electric heating sheet body 1 like
The surface temperature when the surface of the is blocked by the heat insulating bag 30 or the heat insulating material 31 is kept at the pest control temperature (45 ± 5
The pest control means 4 for controlling the heat generation operation by the heating element 1a is provided so that the temperature becomes (° C.). Here, the pest control means 4 controls the mite control switch 15 that is turned on during the pest control, the temperature setting change circuit 16 that changes the temperature setting during the pest control to the high temperature side, and the operating time of the pest control means 4. It is formed of a timer circuit 17 for setting. On the front surface of the temperature controller 2, in addition to the mite extermination switch 15, a power source switching switch 20 for turning on / off the power source and selecting a heating portion of the heating element 1a (entire surface, left half, right half), a push button switch. The temperature adjustment switches 21a and 21b, the temperature adjustment display section 22, and the timer display section 23 for displaying the remaining off time during the timer operation are provided.

The operation of the embodiment will be described below. Now, in the embodiment, when the ticks of the electric heating sheet are removed, the surface of the electric heating sheet body 1 is closed by the heat insulating bag 30 or the heat insulating material 31, and the pest control means 4 of the temperature controller 2 is controlled. It suffices to press the tick extermination switch 15 of the temperature setting change circuit 16
The surface temperature is the mite control temperature (45 ± 5
℃). At this time, the timer circuit 1
7 also operates at the same time, and a preset fixed time (0.5
The operation is performed at the mite control temperature for only about 4 hours), and the mite control can be easily and surely performed by using the heating element 1a of the electric heating sheet main body 1.

FIG. 5 and FIG. 6 are views showing an example of temperature control. In the case of FIG. 5, the temperature is kept raised to the mite control temperature Td for a fixed time td set by the timer circuit 17, and the fixed time td is maintained. After the elapse, the power supply to the heating element 1a is stopped. Further, in the case of FIG. 6, the mite control temperature Td
After a certain period of time td for holding, the temperature is returned to the set temperature Ts in the normal use state to control the temperature, and normal use is enabled immediately after the removal of the mites.

[0014]

As described above, the present invention uses the electric carpet in which the maximum temperature of the non-occluded surface is set to a temperature that does not cause low-temperature burns. Even if the set temperature is raised, the surface temperature of the electric heating sheet does not rise to the temperature at which low temperature burns occur, and it can be used safely without the risk of low temperature burns or fire due to overheating. It is possible.

According to the invention of claim 1, the main body of the electric heating sheet provided with the heating element is put in a heat insulating bag to close the surface of the body of the electric heating sheet with a heat insulating bag. The surface of the electric heating sheet is covered with a heat insulating material by sandwiching the main body of the heating sheet between heat insulating materials, and the surface temperature of the electric heating sheet when the surface is covered with a heat insulating bag or heat insulating material is a pest for a certain period of time. Since the temperature controller controls the heat generation operation by the heating element so that the extermination temperature will be reached, even if the electric heating sheet has the maximum surface temperature set to a temperature that will not cause low-temperature burns, it will be a heat-insulating bag or heat-insulating material. Efficiently use the heat energy to heat the heating element at the normal operating temperature to easily raise the surface temperature of the electric heating sheet body to the pest control temperature without adding a special heating element. So, there is an effect that the pest surface of an electrically Todan seat body can be reliably disinfect eliminating escape of pests.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view of another embodiment of the present invention.

FIG. 3 is a front view of a temperature controller of the electric heating sheet.

FIG. 4 is a circuit diagram of an electric heating sheet.

FIG. 5 is an operation explanatory diagram of the present invention.

FIG. 6 is another operation explanatory view of the above.

FIG. 7 is a perspective view of a conventional example.

FIG. 8 is an explanatory diagram showing the above problems.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric heating sheet body 1a Heating element 2 Temperature controller 4 Pest control means 30 Insulating bag 31 Insulating material

Claims (4)

[Claims] 1. In an electric heating sheet in which the maximum temperature of the surface that is not blocked is set to a temperature that does not cause low-temperature burns, the body of the electric heating sheet including a heating element is put in a heat insulating bag to insulate the surface of the electric heating sheet body. The temperature controller controls the heat generation operation by the heating element so that the surface temperature of the electric heating sheet main body in the state where it is covered with a bag and the surface is covered with an insulating bag is at the pest control temperature for a certain period of time. Pest control method for electric heating sheet. 2. The electric heating sheet according to claim 1, wherein the pest control temperature is set to 45 ± 5 ° C. and the operating time at the pest control temperature is set to 0.5 to 4 hours. Pest control method. 3. An electric heating sheet having a maximum temperature of an unobstructed surface set to a temperature that does not cause low-temperature burns, and the electric heating sheet body including a heating element is sandwiched between heat insulating materials so as to cover the surface of the electric heating sheet body. The temperature controller controls the heat generation operation by the heating element so that the surface temperature of the electric heating sheet main body in the state of being blocked by the heat insulating material and the surface being blocked by the heat insulating material becomes the pest control temperature for a certain period of time. A method of exterminating pests on a characteristic electric heating sheet. 4. The electric heating sheet according to claim 3, wherein the pest control temperature is set to 45 ± 5 ° C. and the operating time at the pest control temperature is set to 0.5 to 4 hours. Pest control method.