JPH0833215B2 - heater - Google Patents

Description

TECHNICAL FIELD The present invention relates to a heating device such as a radiant oil heating device capable of placing a kettle or the like on a top plate to boil hot water.

(B) Conventional technology As a conventional heater of this type, for example, Japanese Utility Model Publication No. 63-28
As disclosed in Japanese Unexamined Patent Publication No. 330, it is known that a top plate of an outer case is provided with a plurality of ventilation holes through which combustion exhaust gas passes, and the combustion exhaust gas from a burner is used to heat the top plate. ing.

(C) Problems to be Solved by the Invention In the above-described heater, when a kettle or the like is placed on the top plate, water spilled from the kettle or the like enters the combustion cylinder through the ventilation hole and the burner There is a drawback in that the product is inadvertently digested, or rust is generated in the components of the burner to reduce the durability. Further, since the central portion of the top plate is heated to an unnecessarily high temperature (for example, 350 ° C. or higher), when the top plate is subjected to enamel treatment, there is a drawback that enamel cracks easily occur.

The present invention has been made in view of the above facts,
The purpose is to prevent water from entering the combustion cylinder when a kettle or the like is placed on the top plate, and to prevent the temperature of the top plate from rising more than necessary, while improving the wind resistance. There is.

(D) Means for Solving the Problems In the present invention, an outer case having an opening in the front surface and a top plate provided with a ventilation part in the upper part, a burner and a combustion cylinder provided in the outer case, It is connected to the upper part of this combustion cylinder and has an exhaust port under the top plate,
An exhaust case provided with a flange on the outer circumference is provided, and a baffle plate larger than the exhaust port is provided between the exhaust case and the top plate, and both front and rear parts of the baffle plate and the flange of the exhaust case are provided. Each of the spaces is closed by a plate body, and a decorative plate is attached to the front upper part of the outer case located in front of the baffle plate.

(E) Action A baffle larger than the exhaust port of the exhaust case is installed between the exhaust case connected to the upper part of the combustion cylinder and the top plate of the exterior case, so water spilled from a kettle etc. Even when it enters the exterior case through the ventilation part of the, the water can be prevented from entering the combustion cylinder through the exhaust case, and the combustion exhaust gas flowing out from the exhaust port is dispersed by the baffle plate. Since it flows to the plate side, it is possible to prevent the temperature of the top plate from rising more than necessary.

In addition, since the front part of the baffle plate and the flange of the exhaust case are closed with a plate, and a decorative plate is attached to the upper front part of the outer case located in front of the baffle plate, the device can be opened from the front of the opening. When a wind is received, the wind can be suppressed from flowing into the combustion cylinder through the exhaust case by the decorative plate and the plate body at the front of the baffle plate, and the wind resistance of the device can be improved.

Furthermore, since the space between the rear part of the baffle plate and the flange of the exhaust case is closed by a plate, the combustion exhaust gas flowing out from the exhaust port is prevented from flowing to the rear side of the outer case, and the upper rear part of the outer case is prevented. It is possible to suppress the temperature rise.

(F) Embodiments Embodiments of the present invention will be described below with reference to FIGS. 1 to 4. In the figure, (1) is an outer case, and this outer case (1) is a bottom plate (2) as a stand, a peripheral side plate (3) having left and right side surfaces and a back surface, and a peripheral side plate (3).
Of the top plate (4), which is attached to the upper part of the top plate and has a enamel surface on the top plate (4) and a front panel (5) attached to the lower front part of the peripheral side plate (3). An opening (6) is formed between the front edge and the upper edge of the front panel (5). A protective guard (7) is attached to the opening (6) so as to be openable and closable or detachable. As shown in FIG. 2, the top plate (4) has a non-perforated portion (4A) formed substantially in the center thereof, and a perimeter of the non-perforated portion (4A) has a horizontally elongated slit shape as a ventilation portion. Are provided with a large number of vent holes (8). Reference numeral (9) is an operation section provided on the front side of the front panel (5) and also serving as a display section, and (10) is a circuit board of the operation section (9). (1
Reference numeral 1) is a burner mounted and fixed on a bottom plate (2) in the outer case (1), including an air supply case (14) containing a motor (12) and an air supply fan (13), and this air supply case (14). It is composed of a vaporization premixing burner (15) for vaporizing and burning petroleum fuel provided in the upper part of (14), and the fuel vaporized in the burner (15) is burned from a supply fan (13). It is mixed with air and ejected from the burner head (16), and a blue flame (F) is formed on the burner head (16) for combustion. (17) is a burner case provided on the upper part of the air supply case (14) so as to surround the burner (15), (1
8) is a cartridge tank, (19) is an oil pan for storing a substantially constant amount of petroleum fuel from the cartridge tank (18), and the fuel in the oil pan (19) is supplied to the burner (not shown) by a fuel pump (not shown). 15) is supplied. (20) is a flame detector such as a frame rod.

(21) is an outer case (1) corresponding to the opening (6)
A combustion cylinder provided inside is made of a translucent material such as heat-resistant glass, and a flame (F) of the burner (15) rises inside thereof. (22) is the outer case (1)
It is a partition plate that also serves as a horizontal reflection plate and is provided so as to partition the inside into upper and lower parts, and a lower support part (23) for supporting the lower end part of the combustion cylinder (21) by fitting is projected upward in the substantial center part thereof. Are provided. Reference numeral (24) is a vertical reflector having an arcuate cross section provided at the rear of the combustion tube (21), and the upper edge of the vertical reflector (24) is close to the top plate (4).

(25) is an exhaust case connected to the upper end of the combustion tube (21), and an outward flange (27) is integrally formed on the upper edge of the cylindrical tube (26) of the exhaust case (25). Is formed around the entire circumference, and the front end of this flange (27) is a decorative plate (28).
Moreover, the rear ends thereof are fixed to the vertical reflecting plate (24), respectively. Then, the exhaust port (2
9) is located below the non-perforated part (4A) of the top plate (4). Further, the bottom portion of the exhaust case (25) has a rectifying portion (31) in which a large number of exhaust passage holes (30) (30) are radially formed on an inclined surface.
Is formed, and the combustion cylinder (21) is provided outside the rectifying section (31).
An upper support portion (32) for supporting the upper end portion of the exhaust gas by fitting is formed, and further, the air in the exhaust case (25) is provided at the bottom of the exhaust case (25) located outside the combustion cylinder (21). A large number of through holes (33) (33) for introducing the are provided in an annular shape. Further, an elongated plate-shaped red heating element (34) curved in an arc shape is suspended from a substantially central portion of the rectifying section (31) toward the burner (15). The red heating element (34) is made of, for example, a thin plate of high chromium stainless steel (SUH-21) having a plate thickness of 0.3 mm. (36) has a circular aperture in its center (37)
An annular resistance plate having an open end is spot-welded to the inner bottom surface of the exhaust case (25) corresponding to the rectifying section (31). In the exhaust case (25), a rectifying cylinder (38) is provided on the resistance plate (36) at a distance from the resistance plate (36).

The baffle plate (39) is provided between the top plate (4) and the exhaust case (25), and the baffle plate (39) is located directly above the exhaust port (29) and above the exhaust port (29). The front, rear, left and right dimensions are set larger than the diameter of the exhaust port (29) so as to cover the. Further, hanging pieces (39A) (39B) are provided on both front and rear edges of the baffle plate (39) by bending, and lower ends of the hanging pieces (39A) (39B) are provided at the exhaust case (2).
It is fixed on the flange (27) of 5).

The decorative plate (28) is attached to the upper end of the opening (6) on the front surface of the outer case (1), and in combination with the hanging piece (39A) when the wind is received from the front of the opening (6). The wind is prevented from entering the combustion cylinder (21) through the exhaust case (25), and the wind resistance is improved.

In the above structure, first, when the burner (15) is heated to a predetermined temperature by a vaporization heater (not shown), the petroleum fuel in the oil pan (19) is operated by a refueling pump (not shown) to burner (15). 15) It is supplied inside and vaporizes. This vaporized fuel is mixed with the combustion primary air sent from the air supply case (14) by the air supply fan (13), and then jetted from the burner head (16) into the combustion tube (21). It is ignited by a spark plug (not shown). In this way, when gasification and combustion are carried out in the burner (15), the combustion gas rises in the combustion tube (21), wraps the red heating element (34) with the flame (F), and wraps the red heating element (34). Make it red hot. The radiant heat is radiated into the room through the opening (6) directly or after being reflected by the vertical reflection plate (24). Furthermore, exhaust holes (30)
The combustion exhaust gas that has flowed into the exhaust case (25) through the (30) passes through the throttle opening (37) of the resistance plate (36) and the rectifying cylinder (38) and flows out from the exhaust opening (29). And the exhaust port (2
After the flue gas discharged from 9) does not directly hit the non-perforated part (4A) of the top plate (4) as shown in Fig. 3, but is split left and right along the lower surface of the baffle plate (39). , Through the ventilation holes (8) (8) and discharged above the top plate (4).
At this time, when the temperature of each part of the top plate (4) was measured, approximately 270 ° C. was passed through the combustion exhaust gas at the substantially central part of the non-perforated part (4A) on which a kettle (not shown) was placed. Ventilation holes (8)
The temperature was about 340 ° C in the hottest part near (8).

According to the present embodiment, when a kettle or the like is placed on the top plate (4) or is about to be placed, water spilled from the kettle or the like passes through the ventilation holes (8) (8) and the outer case ( 1)
Even if it gets inside, the top plate (4) and the exhaust case (2
Since a baffle plate (39) larger than the exhaust port (29) of the exhaust case (25) is provided between the exhaust case (25) and the exhaust case (25), the combustion cylinder is inserted through the exhaust case (25). (twenty one)
It is possible to prevent water from entering the inside and prevent the burner from being exposed to water. Further, the combustion gas flowing out from the exhaust port (29) of the exhaust case (25) is distributed by dividing the combustion gas into left and right by the baffle plate (39) provided between the top plate (4) and the exhaust case (25). Therefore, the temperature of the top plate (4) does not locally become high, and it is possible to prevent the temperature of the top plate from rising more than necessary while allowing boiling with a kettle or the like.

Further, the front edge of the baffle plate (39) and the flange (27) of the exhaust case (25) are closed by a front hanging piece (39A), and moreover, the outer casing located in front of the baffle plate (39). Since the decorative plate (28) is attached to the upper end of the opening (6) on the front of the case (1), when the device receives wind from the front of the opening (6), the wind passes through the exhaust case (25). The combustion cylinder (2
1) The flow inside can be suppressed by the decorative plate (28) and the baffle plate (39) hanging piece (39A) at the front edge of the baffle plate (39A), and the wind resistance of the equipment can be improved. It is possible to avoid a risk that the flame (F) rising in the inside of 21) flows backward and the flame (F) flows out from under the combustion cylinder (21) to the lower space in the outer case (1).

Further, since the rear edge of the baffle plate (39) and the flange (27) of the exhaust case (25) are closed by the rear hanging piece (39B), the combustion exhaust gas flowing out from the exhaust port (29). Can be prevented from flowing to the back side of the outer case (1), the temperature rise in the upper back side of the outer case (1) can be suppressed, and the safety in places where it is difficult to pay attention can be improved.

(G) Effect of the Invention As described above, according to the present invention, since the baffle larger than the exhaust port of the exhaust case is provided between the exhaust case and the top plate, water spilled from a kettle or the like can be absorbed by the top plate. Even when the water enters the exterior case through the ventilation part, the water can be prevented from entering the combustion cylinder through the exhaust case, and the combustion exhaust gas flowing out from the exhaust port is dispersed by the baffle plate. Since it flows to the side, it is possible to suppress the temperature of the top plate from rising more than necessary, and of course, the front part of the baffle plate and the flange of the exhaust case are closed with a plate body, and further,
By attaching a decorative plate to the front upper part of the exterior case located in front of the baffle, even if the device receives wind from the front, it is possible to suppress that wind from flowing into the combustion cylinder through the exhaust case, The wind resistance of the equipment is enhanced and the safety can be improved. In addition, since the space between the rear part of the baffle plate and the flange of the exhaust case is closed by the plate, it is possible to prevent the combustion exhaust gas from flowing to the rear side of the outer case, and as a result, the temperature rise at the upper rear surface of the outer case. Is suppressed and safety is further improved.

[Brief description of drawings]

1 to 4 each show an embodiment of a heater according to the present invention. FIG. 1 is a front view with a protective guard removed, FIG. 2 is the same plan view, and FIG. 3 is a second view. FIG. 4 is a cutaway side view of a main part, and FIG. (1) …… Exterior case, (4) …… Top plate, (6) …… Opening, (8) …… Ventilation hole (vent), (15) …… Burner,
(21) …… Combustion cylinder, (25) …… Exhaust case, (27) ……
Flange, (28) …… Decorative plate, (29) …… Exhaust case exhaust port, (39) …… Baffle plate, (39A) …… Hanging piece (plate), (39B) …… Hanging piece (plate) body).

Claims (1)

[Claims] 1. An exterior case having an opening in the front surface and a top plate provided with a ventilation part at the top, a burner and a combustion cylinder provided in the exterior case, and connected to the upper part of the combustion cylinder. An exhaust case having an exhaust port under the top plate and a flange provided on the outer circumference is provided, and a baffle plate larger than the exhaust port is provided between the exhaust case and the top plate. A heating device characterized in that front and rear portions of the baffle plate and the flange of the exhaust case are closed by plates, respectively, and a decorative plate is attached to the front upper part of the outer case located in front of the baffle plate. Machine.