JPS6073215A - Radiation type heater - Google Patents

Abstract

PURPOSE:To improve the radiation efficiency in a radiation-type heater, in which a red-hot member is heated red-hot by a burner that burns the vaporized liquid fuel such as kerosine, by improving the ventilating path to the red-hot member so as to prevent an uneven red-hot heating. CONSTITUTION:Upon starting burning, a motor 58a for a hot air blower fan 58 is set in motion. Most of the air by the blower fan 58a is joined by the burnt exhaust gas by a burner 29 out of a burning tube 46, and is delivered to the outside of an exterior case 59 as hot air out of a hot air outlet. Part of the air by a blower fan 58b, however, is introduced from multiple holes 57 to a secondary air supply passage Y to be supplied to an upper part of the burning flame 40 from secondary air holes 53, 53... in order to promote the secondary burning. The burnt gas that travels upward in a burnt gas passage X tends to gather as it travels upward in the burnt gas passage X. According to the present invention, however, the fact that through-holes 55, 55 are drilled only at left and right hand ends of a cover 54 which closes the upper opening of the burnt gas passage X helps to retard gathering of the burnt gas by causing it to be vented through the holes 55, permitting the red-hot member 49 to be uniformly and efficiently heated over its entire space.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a radiant heater configured to make a red-hot member red-hot using a burner device that vaporizes and burns liquid fuel such as kerosene.

(B) Prior art To explain this type of conventional radiant heater based on Figures 5 and 6, (1) is a constant oil level where fuel is stored, and inside the constant oil level vessel (1). The liquid fuel is fed under pressure by the fuel pump (2) to the vaporizer (4) via the fuel pipe (3), and is vaporized by an electric heater in the vaporizer (4), and this vaporized gas is fed to the burner (5). Combustion air is sucked into the mixing tube (6) and blown out, and after being premixed in the mixing tube (6), it is ejected from the oblong flame port member (7) to form a line-shaped blue combustion flame. (
8) is formed and combusted. (9)
is a hollow housing-like combustion tube with the horizontally elongated flame port member (7) facing the lower part thereof, and a flat incandescent tube located in the combustion tube (9) directly above the burner (5). A member 00) is installed, and this flat red-hot part QO) is connected to a combustion burner (5
) is heated to a high temperature by the combustion flame (8) and becomes red-hot,
Heat rays radiated by this red heat are transmitted through a heat ray transmitter (11) on the oil surface of the combustion tube (9) to perform radiant heating.

Hc is a hot air blower disposed at the rear of the combustion tube (9), and the blower fan 04) is driven by the motor θ3).
The accelerated air flow generated by the blower fan (14) and the combustion exhaust gas discharged from the combustion tube (9) are combined to send warm air into the room. (151 is a partition plate arranged at the bottom of the combustion m (9) with a gap from the burner (5).

In the conventional device mentioned above, the combustion gas is raised along the incandescent part it (11), but due to the focusing action of the combustion flame, the The glow at both ends of the upper part of the glow member α0) was poor, and uneven glow occurred.

(c) Purpose of the Invention The present invention aims to eliminate the above-mentioned drawbacks of the conventional structure.

B) Structure of the Invention In order to achieve the above-mentioned objects, the present invention vaporizes liquid fuel, premixes the vaporized gas with combustion air, and directs the premixed gas above and above the oblong flame nozzle member. Consisting of a flat incandescent member disposed along the longitudinal direction, a guide plate that forms a combustion gas passage between the flat incandescent member, and a cover plate that closes the upper opening of this gas passage. However, the cover plate is configured to have through holes located only at both left and right ends of the gas passage.

(e) Examples Examples of the present invention will now be described based on the drawings of FIGS. 1 to 4. □□□ is an air supply blower that sucks outside air through a filter (21), and includes a motor (2) installed in the suction passage (2) and a motor (2) driven by the motor (2).
Air supply fan CI! (A) (24) and a synthetic resin fan case (
25), and the air sent upward from this air supply blower (20) is sent to the air nozzle (28) from the air supply pipe (2η) via an air volume regulator (26) made of a solenoid damper, etc. The post-combustion air whose air volume is adjusted by the air volume regulator (26) is forced to be sent through the air nozzle (28) into the vaporization chamber 0() of the burner device (29).

Gυ is a removable auxiliary tank (321 in an inverted state 1tC
(It is a level regulator in which a certain amount of liquid fuel is stored inside, and the level regulator 0) is pumped up by an electromagnetic pump whose pumping amount is controlled by an oscillator (not shown). The fuel is pumped up by the pump (2) and fed under pressure into the vaporization chamber through the fuel nozzle can at the tip of the fuel supply pipe (34) facing into the air nozzle (3).

The burner device is equipped with an electric heater (to) that heats the peripheral wall of the vaporization chamber (00), and vaporizes the liquid fuel supplied into the vaporization chamber (to), and also vaporizes the vaporized gas and combustion air. The premixed gas is premixed in the chamber (to), and the premixed gas is ejected from the oblong burner port member 01 through the throttle passage G and the outlet path (2), and a line-shaped blue flame combustion occurs on the burner port member 01. It burns by forming a flame (40).The vaporizing cylinder (4
(44) is a cylindrical heat shielding cylinder with a bottom that surrounds the vaporizing cylinder (43), (451 is a heat shielding cylinder (44) )
This is a partition heat shield plate that can be connected and integrated with the upper end of the .

(4G) is a hollow housing-like combustion tube that is attached to the partition heat shield plate (451), the upper part of which is open, and the lower part of which faces the oblong flame opening side 091 marked Q of the burner device. .

(47) is a window hole provided in the front surface of the combustion tube (4G), and the window hole (47) is provided with a heat ray transmitting body (47) made of heat-resistant glass.
It is closed by attaching 4 frames, and the heat ray transmitting body (marked 4 has a transparent part at the lower end and a prism part above it).

4 is the oblong flame port member (above the 3 jets and the flame port member 0
A flat incandescent member installed in the combustion tube (46) along the longitudinal direction of the burner. A curled portion 60) is formed. eil) eil) is a support side plate provided on the left and right ends of the incandescent part side (the left and right ends of the incandescent member) and fixes the incandescent members (four of them) to the inner surface of the back wall (46) of the combustion tube (46); (49), and the guide plate 621 is installed between the surface support side plates 51) and 51). A combustion gas passage narrowing upward is formed between the red-hot part side (49) and the red-hot part side (49).53
1 (53)... is a large number of secondary air holes located at the lower end of the guide plate r5 and bored throughout the entire lateral direction of the guide plate (46). 46) introduction hole 67
) A hot air blower t introduced into the edge of the secondary air supply path
A part of the air blown from the 5th frame is supplied to the lower part of the combustion gas passage (2) as secondary air.

Reference numeral 6a denotes a cover plate that is bent and formed integrally with one end of the red-hot member (49), and the cover plate (54) is provided so as to close the upper opening of the combustion gas passage (3). A pair of oblong continuous holes 6ωF5 are located in the combustion gas passage cabinet and located only at both left and right ends.

The warm air blower 6gJ is equipped with a blower fan (58b) consisting of a motor (58a) and a propeller fan, and generates wind that travels straight toward the combustion tube (4G), thereby blowing the outer case I! The hot air blower 6al performs heating by sending hot air into the room etc. from the hot air outlet of the hot air outlet (59).
6) is arranged in the upper part of the back of the exterior case 59). Also, the first part is the combustion tube (the upper heat shield plate placed directly above the 46j), and the second part is the spark plug that is integrated with the flame rod.

Next, the operation of the present invention will be explained. Electric heater (36
), when liquid fuel and combustion air are pumped into the vaporization chamber (1', 11) whose peripheral wall is preheated, the liquid fuel instantly vaporizes and the vaporized gas and combustion air are premixed, The premixed gas with
9) is ejected into the combustion tube (46), and a line-shaped blue flame combustion flame (4) is formed on the upper surface of the flame opening and causes primary combustion.

On the other hand, at the same time as combustion is started, the motor (58a) of the hot air blower (58) is driven, the blower fan (58b) rotates, and air is generated toward the combustion tube (46). Most of the wind from this blower fan (58b) comes from the combustion tube (4
6) The burner casing discharged from the burner casing [(29) joins with the combustion exhaust gas, becomes warm air, and exits the hot air outlet from the outer case 69)
sent outside. In addition, the air blower 7 am (58b)
A part of the air is introduced into the secondary air supply path (to) through a large number of introduction holes t57),
+3)... is supplied to the upper part of the combustion flame (40) as combustion secondary air to promote secondary combustion.

Further, the combustion gas rising between the combustion gas passages tends to converge as it rises within the combustion gas passage cabinet, but in the present invention, a cover plate 6a that closes the upper opening of the combustion gas passage (3) is used.
Since the through holes 6 ω are opened only at both the left and right ends of the 51C red-hot member (49), the combustion gas is discharged through the through holes 6 ω, thereby reducing the focusing effect and discharging the combustion gas from the upper part of the 51C red-hot member (49). The red heat at both end portions does not become too strong, and substantially the entire area of the red hot portion 1' (49) can be made red hot uniformly and favorably.

Also, the information board l! Since the i side is sloped so that the combustion gas passage ■ narrows upward, the red-hot member (49)
The red glow in the upper part of the can be effectively done.

Furthermore, since the red-hot part blade (49) is formed with a curled part 60 on the lower edge, it can be prevented from deforming due to the rising pressure and high temperature of the combustion flame (4), and its durability is improved by simple sanding. can.

Furthermore, by opening the through holes 651a51 only in the left and right end portions of the cover plate r54), it becomes a resistance to the combustion gas rising in the combustion gas passage cabinet, and the flow velocity can be reduced, further reducing red-hot combustion (49 ) could be heated to high temperatures, dramatically improving radiation efficiency.

(F) Effects of the Invention As described above, according to the radiant heater of the present invention, liquid fuel is vaporized, the vaporized gas is premixed with combustion air, and this premixed gas is combusted on an oblong interceptor. A combustion gas passage is formed between the burner device, the flat red-hot part side disposed above the oblong flame port member and along the longitudinal direction thereof, and the flat red-hot part side. A guide plate and a cover plate for closing the upper opening of the combustion gas passage are also formed, and the color plate has through holes located only at both left and right ends of the combustion gas passage. , the red-hot member can be uniformly heated to a high temperature, and radiation efficiency can be dramatically improved.

[Brief explanation of drawings]

1 to 4 show examples of the present invention, and FIG. 1 is an overall configuration diagram of a radiant heater that is an embodiment of the present invention, and FIG.
The figure is a vertical sectional view of FIG. 1, FIG. 3 is an enlarged sectional view of the main part of FIG. 2, FIG. 4 is a plan view of FIG. 3, and FIGS. 5 and 6 are views showing conventional examples. FIG. 5 is a block diagram of a conventional device, and FIG. 6 is a longitudinal sectional view of FIG. 5. Hanging... Burner device, 01... Oblong burner mouth member, (
4. flat red-hot member, 6o)...curled part, ■
...Guidance board, ■...Combustion gas passage, 64)...
・Cover board, l! 55)...through hole. To'32 Figure 6159 1 ・Continuation of Figure 6, page 1 @ Inventor 31) Shizuo, Gunma Prefecture Company 0 Inventor Takashi Araki, Gunma Prefecture Company Company

Claims (3)

[Claims] (1) A burner device that vaporizes liquid fuel, premixes the vaporized gas with combustion air, and combusts the premixed gas on an oblong burner, and a burner device that is located above and above the oblong burner. A flat glowing member arranged along the longitudinal direction;
It is composed of a guide plate that forms a combustion gas passage between the flat red-hot section and a cover plate that closes an upper opening of the combustion gas passage, and the cover plate includes a guide plate that forms a combustion gas passage between the combustion gas passage and the combustion gas passage. A radiant heater with holes located only at both ends. (2) The radiant heater according to claim 1, wherein the guide plate is inclined so that the combustion gas passage narrows upward. (3) The radiation type according to claim 1, wherein the flat incandescent member has a curled portion formed on the lower edge.