JP2002213756A - Heating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase a total heat collection area of a radiation means, and hence increase the amount of heat transfer from high temperature gas to the radiation means in a heating apparatus using the radiation means. SOLUTION: High temperature gas produced in a high temperature gas production means 11 heats radiation means 12. Two sheets of radiators 13 herein collect heat, which collected heat is then transmitted between radiators 13 mediating a heat transfer section 15 to sharply increase a total heat collection area as the radiation means 12. A boundary layer is interrupted for every hole 14, so that the boundary layer is developed to prevent heat transfer from being obstructed. Accordingly, the heat of the high temperature gas is effectively transmitted to the radiation means 12 to ensure high radiation temperature even though temperature of the high temperature gas is low.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device using combustion heat, and more particularly to a heating device using radiant heat.

[0002]

2. Description of the Related Art Conventionally, a heating device of this kind is disclosed in Japanese Utility Model Publication No. 63-1.
What was described in 1548 gazette was common. As shown in FIG. 3, the heating device is provided with a burner 1 provided at a lower portion of the main body, a hollow thin box-shaped heat exchanger 2 for passing the combustion gas from the burner 1, and formed on both sides of the heat exchanger. Vertical opening 3 and the heat exchanger 2
A far-infrared paint 4 applied to at least the front surface of the heat exchanger, and a convection fan 5 that blows air to the heat exchanger 2 to exchange heat and discharge it as warm air from a main body discharge port (not shown),
The heat exchanger 2 has a hollow inside so that the combustion gas 6 from the burner 1 passes therethrough and is provided with a passage 7, and a part of the passage 7 is provided so that the combustion gas can reach all parts of the heat exchanger. , A concave bead 8 is provided and discharged from the opening 3.

[0003] By heating the heat exchanger 2 to 300 ° C to 500 ° C with the combustion gas generated by the burner, far-infrared rays are emitted from the front surface coated with far-infrared paint to perform radiant heating. At the same time, the indoor air taken in by the convection fan 5 is blown along the rear surface of the heat exchanger 2, mixed with the combustion gas discharged at the opening 3 of the heat exchanger 2, and discharged into the room as warm air. Perform heating.

[0004]

However, in the above-described conventional heating apparatus, the heat transfer coefficient of the heat exchanger is about 10 W / m ² K because the heat is exchanged on a flat plate and only on one side.
In order to make the heat exchanger temperature 300 ° C., it is necessary to increase the temperature difference between the combustion gas temperature and the panel member, and the temperature of the combustion gas introduced into the panel member must be as high as about 870 ° C. The burner and the heat exchanger must be made of a material that can withstand high temperatures, and it is necessary to directly heat the heat exchanger with the flame generated by the burner.

The present invention solves the above-mentioned conventional problems, in which the heat of the high-temperature gas is efficiently transferred to the radiating means by increasing the total heat collecting area of the radiating means.

[0006]

In order to solve the above-mentioned conventional problems, a heating apparatus according to the present invention comprises a high-temperature gas generating means for generating a high-temperature gas, and a radiating means heated by the heat of the high-temperature gas. The radiating means includes a plurality of radiators that generate radiant energy and a gap provided between the radiators with a heat conducting member that transmits heat between the radiators.

With the above configuration, heat is collected by a plurality of radiators, and the heat is transmitted between the radiators by the heat conducting member, so that the total heat collection area as radiating means is greatly increased. Therefore, the amount of heat transfer from the high-temperature gas to the radiating means is effectively increased, so that a high radiating means temperature can be obtained even when the temperature of the high-temperature gas is low.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 comprises a high-temperature gas generating means for generating a high-temperature gas, and radiating means heated by the heat of the high-temperature gas, wherein the radiating means generates radiant energy. A plurality of radiators are arranged with a gap between each other with a heat conducting member interposed therebetween, and heat is taken by the plurality of radiators, and the heat is transmitted between the radiators by the heat conducting member, so that radiation The total heat extraction area as a means is greatly increased. Therefore, the amount of heat transfer from the high-temperature gas to the radiating means is effectively increased, so that a high radiating means temperature can be obtained even when the temperature of the high-temperature gas is low.

The invention described in claim 2 is particularly advantageous in claim 1.
By using a part of the radiator described in (1) as a heat conducting member, another member is not interposed between the radiators, so that loss of heat conduction can be suppressed.

According to a third aspect of the present invention, in particular, by providing a plurality of holes in the radiator of the first and second aspects,
The flow of the high-temperature gas through the holes can suppress the development of the boundary layer on the radiator surface.

[0011] The invention described in claim 4 is particularly advantageous in claim 3.
By arranging the holes provided in the radiator described in (1) such that the holes do not line up on a substantially straight line in the front-rear direction, it is possible to eliminate a reduction in the radiation area caused by providing the holes.

The invention described in claim 5 is particularly advantageous in claim 3.
By increasing the aperture ratio of the radiator described in the section toward the outer radiator, the temperature from the radiator located inside is likely to rise near the high-temperature gas generator, and the radiator from the radiator arranged inside effectively emits to the front. Can be.

[0013] The invention described in claim 6 is particularly advantageous in claim 1.
By coating the far-infrared paint only on the front surface of the radiator described in ~ 5, the ratio of the radiation output to the front surface of the radiator can be increased, and the heat of the radiator is efficiently emitted as radiation to the front surface. can do.

[0014]

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

(Embodiment 1) FIG. 1 is a perspective view of a main part of a heating device according to Embodiment 1 of the present invention, and FIG. 2 is a sectional view of a radiator. 1 and 2, reference numeral 11 denotes high-temperature gas generating means for generating high-temperature gas such as a circular burner for burning oil or gas fuel, and 12 denotes radiating means heated by the heat of the high-temperature gas. Two radiators 13 coated with paint are arranged in front and behind with a gap secured. The holes 14 of the front and rear radiators are arranged in the radiator 13 so as not to be arranged substantially on a straight line, and the aperture ratio is larger on the outside than on the inner radiator 13. Further, a part of the outer radiator 13 is joined to the inner radiator 13 as a heat conducting portion 15. The radiant means 12 is provided with a radiator heating air passage 16 for guiding a high-temperature gas, and the radiant heating air path 16 is provided with a high-temperature gas from the high-temperature gas generating means 11 by a connecting air path 17 under the radiant heating air path 16. The structure is guided from the radiator heating air path entrance 18 provided in the radiator.

Next, the operation and operation will be described. The high-temperature gas generated by the high-temperature gas generation means 11
The radiator heating air passage 16 is guided by the radiator heating air passage inlet 18 and rises in the radiator heating air passage 16 while increasing the wind speed by the draft action to heat the radiator 13. At this time, heat is collected by the two radiators 13, and the heat is transmitted between the radiators 13 by the heat conducting unit 15, so that the total heat collection area as the radiating unit 12 is greatly increased. Further, since the high-temperature gas passes through the holes 14 of the radiator 13 and heat is transferred on both surfaces of the front and rear radiators 13, the heat collection area of the radiator 12 further increases. And since a boundary layer is interrupted for every hole 14, it can prevent that a boundary layer develops and hinders heat transfer. In addition, since a part of the front radiator 13 is joined to the rear radiator 13 as a heat conducting portion 15 without using another component, the heat of the radiators 13 can be efficiently conducted. Can be conveyed. Therefore, since the heat of the high-temperature gas can be effectively transmitted to the radiating unit 12, a high radiating unit temperature can be obtained even when the temperature of the high-temperature gas is low. When the radiation means 12 is heated to about 300 ° C., far infrared rays are radiated.

At this time, since the far-infrared paint is applied only to the front surface of the radiator 13, the ratio of the radiation output to the front surface of the radiator 13 can be increased, and the heat of the radiator 13 can be efficiently transferred to the front surface. Can be emitted as far infrared rays. Further, since the holes 14 of the respective radiators are arranged so as not to be substantially aligned on a straight line, there is no loss in the radiation area due to the holes 14. Since the aperture ratio of the front radiator 13 is larger than that of the rear radiator 13, the radiation emitted from the rear radiator 13 which is close to the high temperature gas generating means 11 and whose temperature tends to rise can be effectively emitted to the front of the heater. . Since the room is heated by the radiation in this manner, a comfortable feeling of heating can be provided without direct wind blowing on the human body. It should be noted that each configuration in this embodiment can be implemented alone.

[0018]

As described above, according to the present invention, the total heat collecting area of the radiating means can be greatly increased. Therefore,
The amount of heat transfer from the high-temperature gas to the radiation means can be effectively increased, and a high radiation means temperature can be obtained even when the temperature of the high-temperature gas is low.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main portion of a heating device according to a first embodiment of the present invention, showing a cutout of the main portion.

FIG. 2 is a sectional view of a radiator according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a heating device in a conventional example, in which main parts are missing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 High-temperature gas generation means 12 Radiation means 13 Radiator 14 Hole 15 Heat conduction part 16 Radiant heating air path 17 Connection air path 18 Radiant heating air path entrance

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Noriyuki Yoneno 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 3L072 AA01 AC01 AD03

Claims (6)

[Claims] 1. High-temperature gas generating means for generating a high-temperature gas, and radiating means heated by the heat of the high-temperature gas,
A heating device in which the radiating means is configured by securing a gap between a plurality of radiators that generate radiant energy and a heat conducting member that transmits heat between the radiators. 2. The heating device according to claim 1, wherein a part of the radiator is a heat conducting member. 3. The heating device according to claim 1, wherein the radiator has a plurality of holes. 4. The heating device according to claim 3, wherein the holes of the radiators are arranged such that the holes of the radiators do not line up in a substantially straight line in the front-rear direction. 5. The heating device according to claim 3, wherein the aperture ratio increases as the radiator moves toward the outside. 6. The heating device according to claim 1, wherein each radiator is coated with a far-infrared paint only on its front surface.