JPH0619239B2 - Radiant heating device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a radiant heating device applied to various applications such as a stove and a grill, and more specifically, to a vertical plate-like heat radiating body and a radiant heating device for air conditioning. Porous plate-like bodies are arranged to face each other, and a burner is provided upward with respect to the restricted space between the heat radiator and the air-conditioning porous plate-like body, and combustion gas in the restricted space is transferred to the heat radiator. A fan is provided to supply the wind for blowing to the restricted space through the air-conditioning perforated plate-like body, so that the combustion gas is blown by the air supply to enhance the heating effect on the heat radiating body and the radiant heating performance. The present invention relates to improvement of a radiant heating device aiming at improvement of temperature.

[Conventional technology]

Conventionally, in the radiant heating device as described above, as shown in FIG. 7, the perforated plate-shaped heat radiator (2) and the air conditioning perforated plate (3)
The ambient air (indoor air or outside air) around the device was simply taken in as the combustion gas blowing air supplied by the fan (5) to the restricted space (A) between (See Sho 60-40015).

Reference numeral (4) in the drawing denotes a burner which is installed upward with respect to the restricted space (A).

[Problems to be solved by the invention]

However, if the ambient air around the device is taken and supplied to the restricted space as combustion gas blowing air, the temperature of the combustion gas will drop due to the mixing of the supply air and combustion gas. Although the heating effect on the thermal radiator is considerably improved by blowing the combustion gas, there is also a side that the improvement of the heating effect is restricted to a certain extent by the temperature decrease of the above-mentioned combustion gas. There was still room for improvement in terms of improvement.

An object of the present invention is to further improve the heating effect on the heat radiator by rational improvement in the intake structure of the combustion gas blowing air, and also to improve the overall thermal efficiency of the device.

[Means for solving problems]

The radiant heating device according to the present invention is characterized in that a combustion gas is blown from a fan to a restricted space between a vertically oriented perforated plate-shaped heat radiator and the air conditioning perforated plate through the air conditioning perforated plate. In the configuration in which the combustion gas in the restricted space is blown to the thermal radiator by the blowing air supply, an intake port for recovering the exhaust gas passing through the porous radiator is provided near the surface of the thermal radiator. The exhaust gas recovery air passage connecting the intake port to the intake air passage of the fan is provided, and the operation and effect thereof are as follows.

[Work]

That is, the exhaust gas that has passed through the porous plate-shaped heat radiator is recovered, and the recovered exhaust gas is supplied to the restricted space by the fan as a part or all of the combustion gas blowing air.
Since the exhaust gas that has passed through the heat radiator is still at a considerably high temperature, if the high-temperature exhaust gas is supplied to the restricted space as part or all of the blowing air, only the atmospheric air around the device will be blown as before. As compared with the case of supplying as the wind, the temperature decrease of the combustion gas due to the mixing with the blowing air can be effectively suppressed, and the heating effect on the heat radiator can be further improved.

Further, as described above, by collecting the exhaust gas that has passed through the heat radiating body and using it as the blowing air, it is possible to greatly reduce the heat radiation loss due to the emission of the exhaust gas into the atmosphere.

〔The invention's effect〕

As a result, the radiant heating efficiency can be further increased as compared with the past by further improving the heating effect on the heat radiating body, and further, the improvement of the overall thermal efficiency of the device can also be achieved by reducing the heat dissipation loss, As a whole, a radiant heating device having an excellent heating effect on an object to be heated, a low running cost, and an excellent economical efficiency was obtained.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 4, an opening is formed in the center of the front surface of the box-shaped casing (1), and the heat radiation member of the perforated plate king (which consists of a ceramic lattice-like member is formed over the entire surface of the opening ( 2) is provided in a vertical position, and the porous plate-like body (3) for air conditioning is provided inside the casing (1) so as to face the heat radiating body (2).

Then, the Schwank burner (4) is placed in the lower part of the casing (1) so that it faces the restricted space (A) between the heat radiating body (2) and the perforated plate (3) for air conditioning. Along with the interior
The wind for blowing the combustion gas rising in the restricted space (A) due to the draft effect to the heat radiating body (2) is supplied to the restricted space (A) through the air conditioning porous plate (3). Fan
(5) is installed in the upper part of the casing (1), so that the thermal radiation body (2) is effectively heated by spraying the combustion gas, and the heating object (2) is heated from the heating thermal radiation body (2) in front of it. Combustion type radiant stove configured to efficiently radiate heat to the human body).

The thermal radiator (2) is coated with a far infrared ray generating agent in order to enhance the radiation heating effect on the object to be heated. A partition plate (6) for partitioning the inside of the casing (1) into a rear space including the restricted space (A) and a front space located in front of the heat radiator (2) is provided, It serves as the intake chamber (7) for the fan (5) and also the upper wall (8) of the inner peripheral wall of the central opening on the front of the casing where the heat radiator (2) is arranged.
a) and both side walls (8b), with a plurality of small-hole-shaped intake ports (9) communicating with the intake chamber (7) facing the surface of the heat radiator (2), and , The entire width of the upper wall (8a) on the left and right sides and the entire width of the side wall (8b) on the upper and lower sides, respectively.

That is, the exhaust gas that has heated the perforated plate-shaped heat radiator (2) and passed through the perforated plate-shaped heat radiator (2) from the restricted space (A) side is taken from the intake port (9) to the intake chamber ( 7) and the collected exhaust gas is supplied to the restricted space (A) by the fan (5) as the above-mentioned combustion gas blowing air, whereby the combustion gas of the mixing with the blowing air is generated. The temperature drop is suppressed to enhance the heating effect on the heat radiator (2), and the heat loss due to exhaust gas emission is reduced to improve the thermal efficiency.

Also, by providing the intake port (9) on both side walls (8b),
The temperature distribution of the heat radiator (2), which tends to become hotter in the left and right central parts, is made as uniform as possible by the action of exhaust gas suction from both left and right sides.

In addition to adopting a cross flow fan for the fan (5),
When installing it in the casing (1), install the cross flow fan (5) in a restricted space (A) with its axis of rotation (P) facing left and right along the plate surface direction of the heat radiator (2). ) It is arranged on the upper side of the peripheral portion, whereby the overall structure of the stove can be made thinner, and the overall shape of the stove can be made into a flat rectangular parallelepiped compact shape.

In addition, the blowing characteristics of the cross flow fan (5) are utilized to reduce the operating noise of the stove, and the blowing air supplied through the perforated plate for air conditioning (3) affects the dynamic pressure generated by the fan. It is possible to uniformly supply the blowing air by suppressing the unevenness.

When arranging the perforated plate for air conditioning (3) that regulates the blowing air supplied from the fan (5) against the heat radiator (2), the perforated plate for air conditioning (3) Is inclined so that it is closer to the heat radiating body (2) toward its upper side, and as a result, the blowing wind that has passed through the air conditioning perforated plate (3) reaches the heat radiating body (2). Limited space (A)
The combustion gas blowing action on the heat radiating body (2) is made smaller toward the lower side of the restricted space (A) and becomes larger toward the upper side by making it shorter toward the upper side of The spraying state of the gas to the heat radiator (2) can be made uniform in the vertical direction.

In other words, the air conditioning perforated plate (3) is provided, the cross flow fan (5) is used to suppress the influence of the dynamic pressure generated by the fan, and the air conditioning perforated plate (3) is arranged in an inclined manner. In addition, the exhaust gas is sucked from both left and right sides of the heat radiating body (2) so that the entire surface of the heat radiating body (2) can be heated as uniformly as possible. The heat radiation is made uniform to improve the comfort of radiant heating.

The purpose of arranging the perforated plate for air conditioning (3) toward the front as it goes toward the upper side is as described above.
In addition to homogenizing the sprayed state of the combustion gas against, the aim is also to reflect the heat radiation from the burner (4) forward by the air-conditioning porous plate (3). In addition to further improving the heating effect on the heat radiator (2), part of the heat radiation from the burner (4) is passed through the perforated plate heat radiator (2) and directly radiated to the outside to improve the radiation efficiency. We are aiming for further improvement.

Fig. 5 shows the specific structure of the perforated plate for air conditioning (3).
As shown in (a), (b) and FIG. 6 (a), (b), the peripheral edge 3 of the ventilation small hole forming part (a) is formed by pressing a metal plate.
Only the side is cut, and the forming portion (a) is bent at the remaining one side portion to form the ventilation small hole (f).

That is, if the ventilation small holes are formed in the thick plate, the air passage length of each ventilation small hole becomes long, so that the directionality can be effectively given to the passing wind, and the air conditioning perforated plate is provided. It is natural that the air conditioning effect of the whole body can be enhanced,
If such a thick plate is used, the weight of the apparatus becomes heavy and the manufacturing cost also increases.

Therefore, by bending the ventilation small hole forming part (a) to form the ventilation small hole (f) as described above, the bent forming part (a) is used as a guide for the passing wind to form the passing air. To effectively give direction to it, and
A thin plate is used as the material to reduce the weight and cost, while maintaining the high air conditioning effect of the air conditioning porous plate (3).

Limited space between the perforated plate for air conditioning (3) and the heat radiator (2)
When forming (A), the air regulating perforated plates (10) and (11) are also arranged on the upper side and both sides of the restricted space (A). By supplying the supply air from the fan (5) to the restricted space (A) to some extent also from the body (10) and the perforated plate-like body (11) for air conditioning on both sides, the combustion gas is generated on the upper surface of the restricted space (A) and The temperature rise of the upper part and both side parts of the casing (1) due to direct contact with both side surfaces is suppressed, and the heat radiation loss from the outer surface of the casing (1) is reduced.

[Another embodiment]

 Next, another embodiment of the present invention will be described.

Various modifications can be made to the specific structure for providing the exhaust gas recovery inlet port (9) so that it faces the surface of the heat radiator (2), and the shape and number of the inlet ports (9) themselves can be modified. Can be changed.

The intake port (9) may be provided only on the upper side of the heat radiator (2) or only on the side side thereof, or may be provided on the lower side thereof.

The combustion gas blowing air supplied to the restricted space (A) by the fan (5) may be only the exhaust gas collected from the intake port (9), or the ambient air around the device or the outside air and the recovered exhaust gas. It may be a mixture with.

Fan (5) The specific structure of the intake air passage and the specific structure of the exhaust gas recovery air passage connected to the intake air passage can be modified in various ways in place of the intake chamber structure as in the above-described embodiment.

As the perforated plate-shaped heat radiator (2) and the air conditioning perforated plate (3), a lattice-like body, a mesh-like body, a punching plate body, or
Various porous structures such as a three-dimensional mesh structure can be applied, and various materials such as ceramics, metal, or a combination thereof can be used.

The specific types of the burner (4) and the fan (5) are irrelevant.

The radiant heating apparatus according to the present invention can be applied to various kinds of equipment such as heating equipment such as a stove fan fan heater or adjusting equipment such as a grill or an oven.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention. FIG. 1 is a longitudinal sectional view, FIG. 2 is a sectional view taken along line II-II in FIG. 1, FIG. 3 is a front view, and FIG. Fig. 5, Fig. 5 and Fig. 6 show the manufacturing structure of the perforated plate for air conditioning, Fig. 5 shows a state before bending, and Fig. 6 shows a state after bending. Figure (a)
And a sectional view (b). FIG. 7 is a vertical sectional view showing a conventional example. (2) …… Heat radiator, (3) …… Perforated plate for air conditioning, (4) ……
Burner, (5) …… fan, (7) …… exhaust gas recovery air duct, (9)
…… Inlet, (A) …… Restricted space.

Claims (2)

[Claims] 1. A vertically oriented perforated plate-shaped heat radiating body (2) and a rectifying perforated plate-like heat radiating body (3) are arranged so as to face each other, and these heat radiating bodies (2) are arranged.
The burner (4) is installed upwards with respect to the restricted space (A) between the air conditioning porous plate (3) and the combustion gas in the restricted space (A) is transferred to the thermal radiator (2). ) Is a radiant heating device provided with a fan (5) for supplying the wind for blowing to the restricted space (A) through the air conditioning perforated plate (3), wherein the thermal radiator (2 ) Is installed near the surface of the thermal radiator (2), and the exhaust port (9) is connected to the intake air passage of the fan (5). Radiant heating device with a passage (7). 2. The radiant heating apparatus according to claim 1, wherein the intake ports (9) are arranged on both sides of the thermal radiator (2).