JPS644012Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a reflection type combustion radiant heater comprising a combustion tube whose entire side circumference is formed as a radiant heat radiating portion, and a reflector plate provided at the rear of the combustion cylinder.

(Prior Art) A conventional reflection type combustion radiant heater equipped with a reflector plate is shown in Japanese Utility Model Application Publication No. 175908/1983 (see especially Figures 2 and 4 of the drawing). The reflector installed behind the combustion tube is in front (inside)
It is bent into a parabolic or circular arc shape.

Therefore, most of the heat rays radiated backward from the back of the combustion tube, which is a blind spot when viewed from the front side, are reflected back and forth between the combustion tube and the reflector plate, and are not emitted to the outside. Because it is difficult to dissipate heat, there are problems such as local overheating and annealing of the back side of the combustion cylinder, which shortens the life of the heater. Another problem was that it was impossible to use the main components of the reflective heater as they were, and each required special parts, leading to increased costs.

(Purpose of the invention) The present invention was devised in response to these conventional problems, and almost all of the heat rays emitted from the combustion tube are reflected by the reflector. By providing a combustion radiation heater equipped with a reflector plate with a new structure that can radiate radiation in front of the heater necessary for heating, we aim to improve the durability of the heater and also allow it to be used as a combustion tube regardless of whether it is a full-circle type or a reflective type. An object of the present invention is to reduce device costs based on the use of common parts.

(Structure of the invention) The present invention is a combustion radiant heater that is equipped with a reflector at the rear of a combustion tube whose entire side circumference is formed as a radiant heat dissipation section. The reflecting plate is formed from a central flat plate part and side flat plate parts continuous on both sides thereof,
The central flat plate portion is formed into a bent plate in which both sides separated from the longitudinal center line of the reflector plate are bent symmetrically rearward away from the combustion tube so as to intersect at an acute angle with the front-rear direction line of the heater. On the other hand, each of the side flat plate portions is formed into a flat plate bent to the opposite side at an obtuse angle with respect to the adjacent central flat plate portion, and among the heat rays radiated from the combustion tube, the central flat plate portion The radiation that radiates directly to each side plate is reflected toward the front of the heater after being reflected toward each adjacent side flat plate, while the radiation that radiates directly to each side flat plate is reflected toward the front of the heater. The reflector plate is formed in a dispersion type such that heat radiation is reflected toward There is no risk of this occurring, and wide-angle heat radiation is achieved, resulting in effective return heating.

(Example) Hereinafter, one example of the present invention will be described in detail with reference to the accompanying drawings.

The one shown in FIGS. 1 and 2 is a combustion radiation heater equipped with a gasification burner 3 that forcibly supplies combustion air for combustion. It includes gas stoves equipped with gas burners and various other direct combustion type heaters.

The illustrated stove includes a stand 1 that also serves as an oil tank,
It includes a burner cover 2, a gasification burner 3, a safety guard 4, a combustion tube 5, and a top plate 10, and further includes a reflection plate 11 on the back side of the combustion tube 5.

The gasification burner 3 pumps up petroleum (kerosene) stored in an oil tank of a frame 1 with an electromagnetic pump 15 through a filter 14 and sends it to a pump chamber 16. It is sent to a vaporizer 17, where it is dispersed in a mist form, and passed through a fan 19 energized by a motor 18 to the vaporizer 1.
After mixing the primary air sent into the combustion tube 7 with atomized petroleum, the mixture is further mixed with secondary air that is forcibly supplied as auxiliary air and combusted. The combustion tube 5 is heated with a strong flame from the flame port 20 and a long flame.
It has become possible for flames to erupt inside.

The combustion tube 5 has small diameter portions 6 and large diameter portions 7 arranged vertically in an alternating manner, and a sloped portion 8 having small holes 9, 9 for discharging combustion gas distributed between the small diameter portions 6. - Exists in series with the large diameter portion 7, and is formed into a round or polygonal tube.

The combustion tube 5 is erected so that the lower end is surrounded by the burner flame port 20 to prevent outside air from entering, and a heat insulating top plate provided with the top of the tube closed is connected to the shield directly below the top plate 10. It is locked to the hot plate 21.

The small holes 9, 9 provided in the combustion tube 5 are provided so as to have a diameter and number of holes suitable for the combustion gas input, and define the total opening area of the combustion tube 5 as a whole.

These small holes 9, 9 are for blowing out the high-temperature gas, which has a positive pressure with respect to the outside pressure after being burned in the combustion cylinder 5, out of the cylinder. It is preferable to position the holes so that the air blows onto the combustion tube 5. In this way, the entire circumferential surface of the combustion tube 5 becomes uniformly red hot and reaches a high temperature, radiating heat rays to the surrounding area, thereby achieving efficient heating. .

As shown in Fig. 2, the reflector plate 11 disposed behind the combustion tube 5 is made of a bent flat plate with an inverted W-shaped cross section, and is made of a stainless steel plate or the like with a mirror-finished surface. It is formed.

This reflector plate 11 consists of a central flat plate portion 12 located immediately behind the combustion tube 5 and side flat plate portions 13 extending on both sides thereof, and the former central flat plate portion 12 approximately corresponds to the width of the combustion tube 5. With _an effective width of It is made into a bent plate, while each side flat plate part 13 of the latter
is a flat plate which is also symmetrically bent on the opposite front side at an obtuse angle θ ₂ with respect to the adjacent flat plate of the central flat plate portion 12.

Therefore, the bending angle (acute angle) of the central flat plate part 12 and the bending angle (obtuse angle) of the side flat plate parts 13 are different from each other.
An appropriate angle is selected depending on the tube width of the combustion tube 5, the distance between the combustion tube 5 and the reflection plate 11, the cross-sectional shape of the combustion tube 5 (circular or polygonal tube), etc. Reflector 1 of the heat rays radiated from the wall
Although only a portion of the radiation emitted to the reflector 1
In order to prevent a phenomenon in which the amount is repeatedly reflected between the combustion tube 5 and the combustion tube 5 to be trapped immediately behind the combustion tube 5, the entire amount is reflected once or twice by the reflection plate 11 surface and the combustion tube 5 is It is necessary to set an angle such that a reflecting surface is formed such that the light is emitted forward through both left and right sides, and this can be determined geometrically in advance with ease.

In the stove equipped with the reflector plate 11 having such a structure, high-temperature combustion gas accumulates on the pleated wall surface of the cylinder wall of the combustion tube 5 and forms a barrier with the outside air, thereby reducing high-temperature combustion gas. Although the amount of radiant heat is obtained, among the heat rays radiated all around the combustion tube 5 under high temperature, the heat rays radiated to the rear reflecting plate 11 are directly radiated to the central flat plate portion 12. After being reflected toward each adjacent side flat plate part 13, it is reflected from the flat plate part 13 toward the front of the stove, and what is radiated directly to each side flat plate part 13 is reflected toward the front of the stove. As a result, the diffused reflector 11 reflects all of the heat rays radiated to the back side in the forward direction, making it possible to use it for a wide angle forward view, and almost all of the heat radiated to the back side is cut off. Ru.

As a result, an optimal structure for a reflective stove that can be placed along a wall in a room has become known.

(Effect of the invention) As is clear from the above description, in the present invention, the heat rays emitted from the combustion tube 5 toward the rear (back side) are reflected toward the front of the heater by the reflection plate 11 formed in a dispersed manner. Therefore, it can be used as a wide type that dissipates in a wide angle to the front, and the amount of heat radiated to the back is almost completely cut off.
Even if it is installed almost in contact with the room wall, there is no risk of overheating the building materials behind the wall, etc., and it is highly safe, and the radiant heat rays are radiated over a wide angle, making it possible to achieve a heating effect.

In addition, since the reflector plate 11 is formed from the central flat plate portion 12 and the side flat plate portions 13 to prevent the radiated heat rays from the combustion tube 5 from being re-reflected to the combustion tube 5, the local part of the combustion tube 5 can be Durability is improved because overheating does not occur, and the all-round combustion cylinder can be widely used as a forward reflection type, allowing the use of parts that can be used for multiple purposes, thereby reducing equipment costs.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of one example of the heater of the present invention, and FIG. 2 is a sectional view taken along the line A--A in FIG. 5... Combustion tube, 11... Reflector plate, 12... Central flat plate portion, 13... Side flat plate portion.

Claims (1)

[Scope of utility model registration request] In a combustion radiant heater including a reflector 11 at the rear of a combustion tube 5 whose entire side circumference is formed as a radiant heat dissipation section, there is a central flat plate portion 12 immediately behind the combustion tube 5 that approximately corresponds to the width of the tube, and both sides thereof. The reflecting plate 11 is formed from side flat plate parts 13 that are connected to each other, and the central flat plate part 12 has both sides from the vertical center line of the reflecting plate 11 at an acute angle θ ₁ with respect to the longitudinal direction line of the heater. The lateral flat plate portions 13 are bent at an obtuse angle θ ₂ with respect to the adjacent central flat plate portion 12. It is made of a flat plate bent on the opposite side, and among the heat rays radiated from the combustion tube 5, those radiated directly to the central flat plate part 12 are reflected toward each adjacent side flat plate part 13, and then The reflector plate 11 is formed in a dispersive manner so that the heat radiation is reflected from the flat plate portion 13 toward the front of the heater, while the heat radiated directly to each side flat plate portion 13 is reflected toward the front of the heater. A combustion radiant heater characterized by: