JPH0221725Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heat generating device for an electric kotatsu.

A conventional electric kotatsu heating device is generally a heating device 9 that has an infrared heater 3 installed inside the center of the upper back of a kotatsu tower 8, as shown in FIG.
was installed. For this reason, the convection heat generated by the infrared heater 3 overheats the upper part of the kotatsu tower 8, forcing the heating device 9 to be lowered and protruding inside the kotatsu tower 8. Sometimes my feet hit the kotatsu tower 8
They could become deformed or damaged due to overload from the top, and they were difficult to use because they were narrow inside when several people were trying to warm themselves.

Therefore, recently, so-called furniture-like kotatsu, which can be used all year round as a low table in the summer and a kotatsu in the winter, have become popular, but this heat generating device 9 also has the same problem as above, and it is urgently necessary to make the heat generating device 9 thinner. ing.

In addition, it is necessary to conserve resources and energy and improve the feeling of comfortable heating, and the infrared heater 3, which is generally used as a heat source for the conventional heat generating device 9, can provide visual warmth and provide infrared rays quickly after turning on the power. Although it is advantageous in that it heats up quickly, it mainly generates near-infrared rays and little far-infrared rays, so although you will feel a stimulating warmth when using it, you will not be able to get the feeling of being thoroughly warmed to the core of your body. Ta. This is due to the relationship between the wavelength of the emitted infrared rays and the wavelength absorption characteristics of the futon inside the kotatsu tower 8, the skin of the person warming the room, and the wavelength absorption characteristics of the warmer's skin. It is well known in the literature that the absorption characteristics of near-infrared rays are not very good, and for this reason, the feeling of warmth from an infrared lamp heater is felt as described above, and near-infrared rays alone are not sufficient to provide comfort. Requires sufficient and efficient far infrared radiation.

Furthermore, there is a hot air type that warms the inside of the kotatsu tower 8 by circulating warm air, but this is efficient and provides a mellow warmth with less heat loss that heats the upper part of the kotatsu tower 8, but it is still effective for the body. Warm air alone did not warm the core of the vehicle, and it lacked comfort.

The present invention has been made to eliminate the above-mentioned drawbacks, and is a heat dissipation plate having an inlet, a radiation outlet, and an outlet, and a radiant layer body made of an inorganic or organic coating such as flocked hair on at least the outer surface. , a hollow space formed in the shape of a metal capsule by this heat sink and a reflector formed above the heat sink, and a blower and an infrared heater housed in this hollow space, and the blower and the infrared heater are isolated. In addition, by providing a heat shield plate that also serves as a pillar to connect the heat sink and reflector to maintain a hollow space, near-infrared rays from the infrared heater can be directly obtained from the radiation opening.
Furthermore, the radiant layer of the heat dissipation board heated by the infrared heater converts it into far infrared rays, and the effective heating area is wide. The comfort during heating can be improved by making the temperature uniform, and the heat shield protects the blower motor from the radiant heat of the infrared heater, eliminating the accumulation of high temperature heat in the upper part of the kotatsu tower. , the blower device can be made thinner, and the heat shield plate that also serves as the support can secure a hollow space for the heat sink and reflector plate, preventing deformation and damage of the component parts.
It is an object of the present invention to provide a device that can improve usability, and furthermore, can effectively utilize the heat flow as hot air, so there is no heat loss, and energy saving can be improved.

An embodiment of the present invention will be described below with reference to the drawings.

The structure of the embodiment is as shown in FIG. 2. Reference numeral 1 denotes a heat sink, and an organic radiation layer 7 is provided on both the front and back surfaces of the plate, which is made of an inorganic film such as alumina or zirconia or is flocked with short fibers such as rayon or acrylic. It is made of a steel plate, and has an air intake port 11 in the center of the heat sink plate 1, a radiation port 12 on its outer periphery, and an air outlet 13 on its outer periphery. Note that the air outlet 13 on the outermost periphery does not need to be a hole, but may be a notch. 2 is a blower device, which is a stirring type blower device that is installed almost in the center of the kotatsu tower 8 and sends air from the bottom to the entire outer circumference of the suction blades, and has thin disc-shaped blades attached to a thin motor. It is attached to the upper part of the intake port 11. 3 is an infrared heater, which is a quartz tube filled with argon gas or the like and uses a filament, and is a thin tube lamp heater with a diameter of about 1 cm, and the infrared heater 3 is mounted opposite the upper part of the radiation port 12. It is something. 4 is a reflector,
It is made of an aluminized steel plate, etc., and covers the entire upper part of the heat sink 1, and the heat sink 1 and the reflector 4 form a hollow space 10 in the shape of a metal capsule.
A blower device 2 and an infrared heater 3 are housed in this hollow space 10. Reference numeral 5 denotes a protective net, which is made of steel wires arranged in a lattice pattern, and covers the entire lower surface of the heat sink 1 to prevent it from touching the high temperature parts of the heat sink 1 and the like. 6 is a heat shield plate made of aluminized steel plate, etc.
It surrounds the air blower 2 and isolates the air blower 2 and the infrared heater 3, and also serves as a support to connect the heat sink 1 and the reflector 4 and maintain the hollow space 10, and also serves as a heat shield plate. 6 is provided with a ventilation section 61 on the side corresponding to the fan of the ventilation device 2. A represents the direction of air flow, and the air blower 2 forms an air path from the air inlet 11 to the air outlet 13 via the air blower 2, and indicates the flow of air through this air path. 9 is a heat generating device, which is a general term for a device assembled from the above components.

The operation of this embodiment having the above configuration will be explained.

When the power is turned on, the infrared heater 3 lights up and emits infrared rays. This infrared ray mainly emits near infrared rays, and is radiated to the inner surface of the heat sink 1, and some of the infrared rays pass through the radiant opening 12 and brighten the inside of the kotatsu tower 8. Gives a sense of warmth.

In addition, other infrared rays reach the inner surface of the heat sink 1 and heat the heat sink 1. Eventually, the temperature of the heat sink 1 rises, and from the radiation layer 7 applied to the lower surface of the heat sink 1,
It generates new infrared rays as secondary radiation and radiates them into the kotatsu, thereby warming the inside of the kotatsu.

At this time, the infrared rays emitted from the radiant layer 7 are far infrared rays that emit more of the longer wavelength range because the surface temperature of the generation source is lower than that of the infrared heater, and the material of the radiant layer 7 is alumina. In the case of inorganic materials such as or zirconia, they generally have a high emissivity, so they can efficiently obtain a large amount of far infrared rays relative to the surface temperature.

In addition, in the case of flocking, compared to the emissivity of 0.7 to 0.8 that organic fibers have, countless flocks are actually implanted on the surface of the steel plate, so the surface area is essentially large, and the surface area effect allows for a large number of long distances. Since infrared rays can be obtained, the material inside the kotatsu is therefore effectively heated.

Further, the infrared rays radiated upward from the infrared heater 3 are reflected by the reflecting plate 4 and act in the same manner as described above.

Further, the convection heat generated by the infrared heater 3 is blown out from the air outlet 13 to the outside of the heat generating device 9, that is, inside the kotatsu tower 8, by the blower 2 installed approximately in the center of the kotatsu tower 8.
The high temperature heat that would normally accumulate in the upper part can be used as hot air, and the upper part of the kotatsu tower 8 is not heated, so there is no heat loss and a thin structure can be achieved. The air flow direction A by the blower device 2 is such that air is sucked in from the central air intake port 11 to cool the motor of the blower device 2, and convection heat from the upper part of the infrared heater 3 is blown out from the air outlet 13 to cool the air inside the kotatsu tower 8. circulate. Also, between the heat sink 1 and the reflector 4, the heat shield 6 blocks radiation from the infrared heater 3 to the motor of the blower 2, and the heat shield 6 protects against the load from the top of the kotatsu tower 8 and protects the protective net 5. Hollow space 1 instead of a support against push-up from the side, etc.
It serves as reinforcement to maintain the temperature of 0, protects the components, and firmly fixes the heat sink 1. In this way, far and near infrared rays are evenly radiated into the kotatsu tower 8, hot air is circulated, the temperature is uniformed with little heat loss, and the heat generating device 9 is made to have a strong structure.

As described above, according to the present invention, there is provided a heat dissipation plate having an intake port, a radiation port, and an air outlet, and provided with a radiation layer body made of an inorganic or organic coating such as flocked hair on at least the outer surface, and A blower and an infrared heater are installed in the hollow space formed by the reflector, a heat sink, and a reflector, and a heat shield that also serves as a pillar connects between the blower and the infrared heater and between the heat sink and the reflector. By installing a board,
In addition to providing visual and stimulating warmth and effective heating with direct near-infrared rays from the infrared heater, the heat from the infrared heater is also converted into far-infrared rays as secondary radiation from a heat sink with a radiant layer. It is possible to obtain efficient infrared rays that warm the body to the core, and the warm air blown toward the outer periphery provides soft warmth and evens out the temperature inside the kotatsu tower. In addition, the heat shield protects the blower motor from the radiant heat of the infrared heater, secures a hollow space between the heat sink and the reflector, and prevents deformation and damage of component parts. In addition, the blower device eliminates the accumulation of high-temperature heat in the upper part of the kotatsu tower, and the blower device can be made thinner, eliminating the possibility of feet hitting each other, improving usability. Since it is used effectively as a fuel, there is no heat loss and there is an energy saving effect.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of a conventional electric kotatsu heating device when it is attached, and FIG. 2 is a sectional view of the heating device of an electric kotatsu showing an embodiment of the present invention. 1... Heat sink, 2... Air blower, 3... Infrared heater, 4... Reflector, 6... Heat shield, 10...
...Hollow space, 11...Intake port, 12...Radiation port,
13...Air outlet.

Claims (1)

[Scope of utility model registration request] It has an intake port 11, a radiation port 12, and an air outlet 13,
and a hollow space 10 formed in the shape of a metal capsule by a heat sink 1 provided with a radiation layer 7 made of an inorganic or organic coating such as flocked hair on at least the outer surface, and a reflector 4 formed above the heat sink 1.
A blower device 2 and an infrared heater 3 are housed in the hollow space 10, and the blower device 2 and the infrared heater 3 are isolated, and the heat sink 1 and the reflector plate 4 are connected to maintain the hollow space 10. This heat generating device for an electric kotatsu is characterized by being provided with a heat shield plate 6 which also serves as a pillar.