JPH07146006A - Heat generation device for electric portable heater - Google Patents

Abstract

PURPOSE:To make more sensitive to the inside temperature of a portable heater by introducing a small amount of hot air into a thermostat in a temperature control structure which combines hot air and an infrared heater and controls the temperature with a radiation resistor-built-in thermostat. CONSTITUTION:In a heat generation device 10 of an electric portable heater which is shaped up with an air supply device 2 provided with a fan and an infrared heater 3 and a thermostat 6 built in a radiation resistor 63 in a space enveloped with a reflective board 4 and a protection guard 5, an air penetration hole 64 through which the air of the air supply device 2 comes into an outer case 60 of a thermostat 6, is installed where a clearance is installed between a radiation resistor 63 in the case 60 and the hole so as to introduce the air into a bimetal opening unit 62. In addition to that, a discharge hole 65 is installed to a base 61 which is communicated with the hole 64 board in the case 60.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for an electric kotatsu, which heats a household in winter.

[0002]

2. Description of the Related Art A conventional electric kotatsu heating device is
For example, as disclosed in Japanese Utility Model Publication No. 60-162850,
For example, one having a structure as shown in FIG. 3 is a general electric kotatsu heating device.

That is, in the space surrounded by the reflector 4 and the protective guard 5, a heating device 10 formed by a fan-equipped blower device 2, an infrared heater 3 and a thermostat 6 for temperature control is formed in the central part 8 of the kettle. Installed in the cross-piece combination part, and the air in the kotatsu is sucked in through the suction port 12 by the rotation of the blower 2, and the sucked air is warmed in the infrared heater 3 part and blown out from the outer peripheral outlet 13. Met.

Further, it is known that the thermostat 6 is installed in the blowing passage of the reflection plate 4 at a position where it is affected by both heat and warm air due to the infrared rays of the infrared heater 3 to control the temperature.

Further, the thermostat 6 is directly connected to a dial provided on the heat generating device 10 to directly control the temperature, and a heat dissipation resistor is provided in the vicinity of the bimetal opening / closing portion, and the thermostat 6 is surrounded by a case to enclose the thermostat 6. Configure and
A type is known in which the amount of heat released from the thermostat 6 is electrically controlled from outside the kotatsu.

[0006]

In the conventional structure described above, when heating the inside of the kotatsu, the infrared heater 3 is used.
Infrared Heater 3 by Infrared Heat and Blower 2
Although it is warmed by warm air by heat recovery in the part, the temperature control is performed by installing the thermostat 6 as well as receiving the infrared rays of the infrared heater 3 and receiving the air flow. Since the structure has a built-in heat dissipation resistor, there is no air flow in the case, so the heat of the heat dissipation resistor was difficult to transfer to the bimetal opening / closing part.

Further, since the temperature condition inside the kotatsu is blocked by the case and is difficult to be transmitted to the bimetal opening / closing part, temperature control is slow and it is difficult to quickly respond to changes such as gaps in the kotatsu futon.

[0008]

In order to solve the above problems, the following constitution is adopted.

In an electric kotatsu heating device having a thermostat in which a ventilation device, an infrared heater, and a heat radiation resistance for electrically controlling the amount of heat radiation from the outside are housed in a space surrounded by a reflector and a protective guard. A thermostat is installed in the vicinity of the infrared heater and at a position where the air from the air blower hits, and a case forming the outer shape of the thermostat is provided with a hole through which air flows.

Further, the case forming the outer shape of the thermostat is provided with a hole through which air flows to the heat radiation resistance in the case.

Further, the case forming the outer shape of the thermostat is provided with a hole for letting air flow through the heat radiation resistance in the case and a base having a hole for discharging the air in the case.

[0012]

With the above construction, when the inside of the kotatsu is warmed, it is warmed by the heat of the infrared heater and the warm air by the heat recovery in the infrared heater part by the air blower. On the other hand, the temperature control requires the installation of a thermostat. While the infrared rays from the infrared heater and the flow of warmed air from the air blower hit the thermostat, the heat radiation resistance is heated inside the thermostat case, and the air from the air blower enters through the holes made in the case to dissipate heat from the inner wall of the case. It flows into the gap between the resistor and the outer shape of the resistor, and is warmed there to quickly raise the atmosphere of the bimetal switch.

[0013] Further, with the discharge hole provided on the base surface different from the case surface for forming the flow-in hole, a passageway for air circulation is formed, and the heat of the heat radiation resistance or the like heats the bimetal opening / closing portion more quickly.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described below with reference to FIGS.

Reference numeral 1 denotes a heat radiating plate made of a steel plate. A heat radiating portion 11 having a flat plate shape of the heat radiating plate and an air blower 2 made up of a motor having a fan installed on the upper side of the heat radiating plate are mounted on the heat radiating plate. A suction port 12 is provided at the center, and a blowout port 13 is provided on the outer circumference of the suction port 12.

Reference numeral 3 denotes an infrared heater, which is formed by internally forming a heating wire such as a nichrome wire in a rod-shaped quartz tube.

Reference numeral 4 denotes a reflector, which is made of an aluminum-plated steel plate or the like, covers the entire upper surface of the heat radiating plate 1, and accommodates the infrared heater 3 and the blower 2 in the lower part thereof.

Reference numeral 5 denotes a protective guard, which is formed by arranging steel wires in a grid pattern, covers the entire lower surface of the heat radiating plate 1, and is provided so as not to touch a high temperature portion such as the heat radiating plate 1.

Reference numeral 6 denotes a thermostat, which includes a resin-made case 60 and a base 61 made of a metal plate, and a bimetal opening / closing portion 62 for temperature control and a heat radiation resistor 63 for electrically controlling from outside the kotatsu provided in the vicinity thereof. The case 60 is installed so as to face the infrared heater 3, and the gap between the outer shape of the heat dissipation resistor 63 and the inner wall of the case 60 is about 2 mm. A small hole 64 of about 2 mm is provided on the surface of the case 60 that hits the base 61, which is a surface on the leeward side as a surface different from the case surface of the hole 64 in some cases.
A hole 65 of about 1 mm is also provided on the surface.

10 is surrounded by a reflector 4 and a protective guard 5,
This is a heating device that is configured by incorporating an infrared heater 3 and a blower device 2 inside.

A indicates the flow of air by the blower 2, and B indicates the infrared rays emitted from the infrared heater 3.

Reference numeral 8 is the center of the yagura located on the upper surface of the kotatsu yagura to which the heating device 10 is attached.

Next, the operation of the above configuration will be described.

With the above structure, the infrared heater 3 is heated to radiate infrared rays to warm the inside of the kotatsu, and the air blown by the air blower 2 recovers the convective heat of the infrared heater 3 to warm it. The inside of the kotatsu is warmed from the air outlet 13 provided on the outer circumference of the heat dissipation plate 1.

At the same time, the infrared ray B from the infrared heater 3 and the air from the blower device 2 are also heated by the infrared heater 3 so that the thermostat 6 is warmed and warms from the outer periphery of the case 60, while the inside of the case 60 of the thermostat 6 is heated. The heat radiation resistance 63 located at is heated by being electrically energized from the outside, and the air heated by the infrared heater 3 by the blower 2 enters from a small hole 64 formed in a part of the case 60, and the inner wall of the case 60 And heat dissipation resistor 6
3 Flows into the gap between the outer shape and the outer shape, and the temperature of the atmosphere in the bimetal opening / closing portion 62 is quickly raised to a higher temperature by being warmed.

Further, a smaller hole 65 functions to discharge air in the base 61 located on the side opposite to the surface different from the surface of the hole 64 into which the air flows, and a passage for the air to flow is created, so that the heat dissipation resistance 63 can be released more quickly. The bimetal opening / closing portion 62 is heated by heat such as.

[0027]

With the above structure, the infrared heater 3 is heated to warm the inside of the kotatsu, and the air blower 2 collects the convective heat of the infrared heater 3 to warm the air and blow it into the kotatsu. Not only can you quickly and effectively heat the inside of the kotatsu, but at the same time, the thermostat 6 and the infrared ray B of the infrared heater 3 and the blower 2
Since the air generated by the above is heated by the infrared heater 3 to be warmed and warmed from the outer periphery of the case 60, the temperature inside the kotatsu can be appropriately adjusted.

On the other hand, the case 60 of the thermostat 6
Inside, the heat radiation resistance 63 is electrically energized from the outside to be heated, and the air heated by the infrared heater 3 by the air blower enters through a small hole 64 formed in a part of the case 60, and the inner wall of the case 60 and the heat radiation resistance 63. Since it flows into the gap with the outer shape and is heated more efficiently here to quickly raise the atmosphere temperature of the bimetal opening / closing section 62, the state of the atmosphere inside the kotatsu can be detected more appropriately and quickly, and the heat radiation resistance 62 It is no longer necessary to heat the surface temperature excessively.

Further, by forming a smaller hole 65 in the base 61 on the opposite side as a surface different from the surface of the hole 64 for flowing in, the hole 6 for discharging the internal air.
Since it works as 5, the air passage can be formed, so that the bimetal opening / closing portion 62 is heated more quickly by the heat of the heat radiation resistance 63 or the like, and the temperature control performance becomes more sensitive. .

Further, with these measures, it has become possible to obtain the capability of quickly responding to changes in the room temperature and changes in the kotatsu temperature due to changes in the gap of the kotatsu futon.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a heating device for an electric kotatsu according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of a heating device for an electric kotatsu according to an embodiment of the present invention.

FIG. 3 is a sectional view of a conventional electric kotatsu heating device.

[Explanation of symbols]

 2 Blower 3 Infrared heater 4 Reflector 5 Protective guard 6 Thermostat 60 Case 61 Base 62 Bimetal opening / closing 63 Heat dissipation resistance 64 hole 65 hole A Air flow B Infrared

Claims (3)

[Claims] 1. A heat radiating resistor for electrically controlling the amount of heat radiated from the blower (2), the infrared heater (3) and the outside in a space surrounded by the reflector (4) and the protective guard (5).
In an electric kotatsu heating device having a thermostat (6) in which (63) is built in a case (60), the thermostat (6) is located in the vicinity of the infrared heater (3) and at a position where the wind from the blower (2) hits. Install this thermostat
Hole that allows air to flow into the case (60) that makes up the outer shape of (6)
An electric kotatsu heating device characterized in that (64) is provided. 2. A case (60) forming the outer shape of the thermostat (6) is provided with a heat dissipation resistor (6) inside the case (60).
The electric kotatsu heating device according to claim 1, wherein a hole (64) for letting air flow is provided in (3). 3. A case (60) constituting the outer shape of the thermostat (6), and a heat dissipation resistor (6) inside the case (60).
A hole (64) for letting air flow is provided in 3), and the case (6)
Base (65) having a hole (65) for discharging the air in (0)
The heating device for an electric kotatsu according to claim 1, further comprising: