JP7267942B2 - heating system - Google Patents

Description

The present invention relates to heating devices.

A heating device that heats a room by guiding combustion gas generated in a burner to a radiator to heat the front part of the radiator and releasing radiant heat from the front part has been proposed (for example, patent Reference 1). In this heating device, the radiator is formed in the shape of a flat box with a thin front-to-rear width, and the wide front portion of the radiator is arranged on the front side of the device. A burner unit is installed on the rear surface of the radiator so as to face the front surface of the radiator.

JP-A-2001-41582

However, in the heating device described in Patent Literature 1, the air below the burner portion in the cabinet is heat-exchanged by the flat box-shaped heat radiator and stays at a high temperature. In addition, since the combustion flame generated in the burner section is jetted forward, a large amount of radiant heat is emitted rearward from the rear surface of the radiator, particularly around the burner section. Therefore, the burner part itself and the lower part in the apparatus may be heated and the temperature may rise excessively.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heating device capable of suppressing an excessive rise in the temperature of the burner portion and the lower portion of the device.

In order to solve the above-mentioned problems, a heating device according to the present invention provides a burner section that performs combustion, an outer cylinder disposed above the burner section, and a heater interposed between the burner section and the outer cylinder. and a connecting member. The connection member has a cylindrical neck portion arranged radially outward of the burner portion, and a lower partition plate extending radially outward from the lower end side of the neck portion. An upper portion of the neck portion is connected to a bottom portion of the outer cylinder. The bottom portion includes an opening located above the burner portion, a cylindrical bottom-side cylindrical portion extending upward from an inner peripheral edge of the opening, and an annular portion extending radially inward from an upper edge of the bottom-side cylindrical portion. and a bottom-side annulus of . The neck has a cylindrical neck-side cylindrical portion and an annular neck-side annular portion extending radially inward from an upper edge of the neck-side cylindrical portion. The upper portion of the neck-side cylindrical portion is fitted into the bottom-side cylindrical portion, and the neck-side annular portion is in contact with the lower surface of the bottom-side annular portion.

ADVANTAGE OF THE INVENTION According to this invention, the heating apparatus which can suppress that the temperature of a burner part and the lower part in an apparatus rises excessively can be provided.

1 is an external perspective view showing a heating device according to an embodiment of the present invention; FIG. It is the perspective view which abbreviate|omitted the front side members, such as a guard body of a heating apparatus. It is a longitudinal section of a heating device. It is a perspective view which shows the support structure of an outer cylinder and a burner part. It is an exploded perspective view showing the support structure of an outer cylinder and a burner part. It is the perspective view which looked at the rear side member of the outer cylinder from the front. It is the perspective view which looked at the rear side member of the outer cylinder from the back. It is a cross-sectional perspective view of an outer cylinder, a connection member, a burner part, and a heat exchanger. It is a cross-sectional perspective view of an outer cylinder and a connection member. FIG. 4 is an exploded cross-sectional perspective view of an outer cylinder and a connecting member; FIG. 4 is a partial cross-sectional plan view schematically showing an outer cylinder, a partition plate, and a convection fan; It is a cross-sectional perspective view of an outer cylinder and a guide member. It is a sectional side view of an outer cylinder and a guide member. FIG. 5 is a side cross-sectional view for explaining a method of assembling the guide member;

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In addition, in each figure, the same code|symbol is attached|subjected about a common component and the same kind of component, and those overlapping description is abbreviate|omitted suitably.

FIG. 1 is an external perspective view showing a heating device 100 according to one embodiment of the invention. For convenience of explanation, the front, rear, left, right, up and down directions of the heating device 100 are set as shown in FIG.

As shown in FIG. 1, a heating device 100 according to an embodiment of the present invention includes a main body case 1 that forms a housing in which components of the heating device 100 are housed. On the front side of the upper surface of the main body case 1, there is provided an operation unit 11 having a plurality of buttons for starting the heating operation and setting the thermal power in the heating operation. A display unit 12 is provided on the upper front surface of the main body case 1 to display the set temperature and room temperature during normal heating operation, and display a predetermined error code when an abnormality occurs to inform the user of the content of the abnormality. It is

On the left and right sides of the front surface of the main body case 1, vertically long blowing parts 13 for blowing hot air into the room are provided. In addition, a guard body 14 is attached to the front of the main body case 1 to prevent the user from directly touching the high temperature portion.

FIG. 2 is a perspective view of heating device 100 shown in FIG. 1, with front side (front side) members such as guard body 14 omitted. FIG. 3 is a longitudinal sectional view of heating device 100 shown in FIG.

As shown in FIG. 3, the heating device 100 includes a burner portion 2, an outer cylinder 3, a heat exchanger 4, a convection fan 5, a fuel oil supply portion 6, and an air supply portion 7 (see FIG. 1). It has

The burner part 2 is arranged in the lower part inside the main body case 1 and performs combustion. The burner unit 2 premixes and burns air sucked from inside the room by a combustion fan (not shown) provided in the air supply unit 7 and fuel oil supplied from the fuel oil supply unit 6 . be.

The outer cylinder 3 is arranged above the burner portion 2 . The lower part of the outer cylinder 3 surrounds the outer peripheral upper part of the burner part 2 . The outer cylinder 3 is a cylindrical member made of metal, through which the flame and combustion gas generated by the burner portion 2 pass. The outer cylinder 3 has a box-shaped portion 31 having a flat box-like shape and a dome portion 32 connected to the rear of the box-shaped portion 31 . The dome portion 32 communicates with the box-shaped portion 31 .

As shown in FIG. 2, the box-shaped portion 31 of the outer cylinder 3 has a front portion 311 having a flat plate shape. The flat plate shape includes a substantially flat plate shape. A heat-resistant glass 314 is attached to the lower portion of the front portion 311 of the outer cylinder 3 .

Above the outer cylinder 3 in the main body case 1, an upper partition plate 19 is installed along the horizontal direction. The upper partition plate 19 has a central portion 191 which is formed one step higher than both longitudinal end portions of the upper partition plate 19 . The central portion 191 is positioned directly above the outer cylinder 3 . The upper partition plate 19 also has an inclined portion 192 that extends obliquely upward from the rear edge of the central portion 191 so as to become higher as it goes rearward.

As shown in FIG. 3 , the dome portion 32 has a rear portion 321 located behind the front portion 311 . A spark plug 22 that ignites vaporized fuel oil emitted from the flame hole of the burner head 21 (see FIG. 5) and a flame rod 23 that monitors the state of the flame are provided at the lower rear portion of the rear portion 321 . installed through the

The dome portion 32 is provided near the lower side of the box-shaped portion 31 . That is, the portion of the box-shaped portion 31 located below the lower end of the dome portion 32 has a smaller vertical dimension than the portion of the box-shaped portion 31 located above the upper end of the dome portion 32 .

The heat exchanger 4 exchanges heat between the combustion gas generated by the burner section 2 and the air sent from the convection fan 5 attached to the back surface of the main body case 1 . The convection fan 5 is arranged behind the outer cylinder 3 and blows air forward. The convection fan 5 has a boss portion 53 connected to the rotating shaft 52 of the motor 51 and a plurality of blades 54 provided on the outer peripheral surface of the boss portion 53 . The heat exchanger 4 is connected to the rear upper portion of the box-shaped portion 31 of the outer cylinder 3 . Also, the heat exchanger 4 is arranged above the dome portion 32 (see also FIG. 8).

The heat exchanger 4 is arranged between a pair of left and right box-shaped header portions 41, 41 (here, the right header portion 41 is not shown) and a pair of left and right header portions 41, 41. and a pipe portion 42 that communicates the two. Here, the right header portion 41 communicates with the box-shaped portion 31 of the outer cylinder 3 , and the left header portion 41 communicates with the exhaust pipe 43 . Combustion gas generated by the burner portion 2 rises in the outer cylinder 3 and flows into the heat exchanger 4 .

FIG. 4 is a perspective view showing a support structure for the outer cylinder 3 and the burner portion 2. As shown in FIG. FIG. 5 is an exploded perspective view showing a support structure for the outer cylinder 3 and the burner portion 2. As shown in FIG. FIG. 6 is a perspective view of the rear member 34 of the outer cylinder 3 as seen from the front. FIG. 7 is a perspective view of the rear member 34 of the outer cylinder 3 as seen from the rear.

As shown in FIGS. 4 and 5, a connecting member 8 is interposed between the burner portion 2 and the outer cylinder 3 . The connecting member 8 is connected to the bottom portion 324 of the outer cylinder 3 . The horizontal attachment plate portion 26 provided in the burner portion 2 is attached to the lower surface side of the lower partition plate 82 of the connection member 8 with the seal member 24 interposed therebetween. The connection member 8 is mounted on a horizontal plate 15 horizontally installed in the lower part of the main body case 1 of the heating device 100 . The horizontal plate 15 is mounted on support legs 16 placed on the bottom surface of the main body case 1 .

The horizontal plate 15 has a U shape (square U shape) in plan view. That is, the horizontal plate 15 has a cutout portion 151 formed in front of the central portion, and has a pair of flat portions 152, 152 on the left and right sides. The burner portion 2 is positioned within the notch portion 151 of the horizontal plate 15 in plan view. Left and right end portions of the connection member 8 are placed on and supported by a pair of flat portions 152 , 152 , respectively. The support leg 16 has a U-shape in plan view similarly to the horizontal plate 15, and can stably support the horizontal plate 15. As shown in FIG.

The outer cylinder 3 has a front member 33 and a rear member 34 . The front side member 33 and the rear side member 34 can each be manufactured, for example, by pressing a metal plate such as a steel plate.

The front member 33 has a front portion 311, a peripheral wall portion 312 extending rearward from the outer peripheral edge of the front portion 311, and a front flange portion 313 extending from the rear edge of the peripheral wall portion 312 along the vertical plane. there is A window portion 315 to which a heat-resistant glass 314 (see FIG. 2) is attached is formed in the lower portion of the front portion 311 .

As shown in FIGS. 6 and 7, the rear member 34 includes a rear surface portion 321, a rear surface portion 322 extending from the front edge of the rear surface portion 321 along the vertical plane, and a rear surface portion 322 provided on the outer periphery of the rear surface portion 322. and a rear flange portion 323 . The rear flange portion 323 of the rear member 34 is joined to the front flange portion 313 (see FIG. 4) of the front member 33 . Here, the front side member 33 and the rear surface portion 322 and the rear side flange portion 323 of the rear side member 34 constitute the box-shaped portion 31 (see FIG. 3). A rear portion 321 of the rear member 34 constitutes the dome portion 32 (see FIG. 3).

The rear portion 321 bulges rearward and has a half-dome shape, which is one half of the dome shape divided in the vertical plane. The dome shape refers to a shape including the shape of a round (circular) roof, and the round (circular) roof includes a roof exhibiting a substantially hemispherical shape. It is preferable that the rear surface portion 321 and the rear surface portion 322 are connected by a smooth curved surface having an appropriate radius of curvature. When viewed from the front (front side), the front edge of the back surface portion 321 has a chevron-shaped upper portion with a rounded tip, and a lower portion that is a horizontal straight line.

The back portion 321 has a horizontal bottom portion 324 having a semicircular plate shape. An opening 325 located above the burner portion 2 is formed in the bottom portion 324 of the back portion 321 , that is, the bottom portion 324 of the outer cylinder 3 . The opening 325 is positioned coaxially with the burner section 2 in the vertical direction. A connection hole 326 that connects to the right header portion 41 of the heat exchanger 4 is formed in the upper right portion of the rear surface portion 322 .

8 is a cross-sectional perspective view of the outer cylinder 3, the connecting member 8, the burner portion 2 and the heat exchanger 4. FIG. 9 is a cross-sectional perspective view of the outer cylinder 3 and the connecting member 8. FIG. 10 is an exploded cross-sectional perspective view of the outer cylinder 3 and the connecting member 8. FIG.

As shown in FIGS. 8 to 10, the bottom portion 324 of the outer cylinder 3 has a bottom side cylindrical portion 327 and a bottom side annular portion 328 . The bottom side cylindrical portion 327 extends upward from the inner peripheral edge of the opening 325 of the bottom portion 324 and has a cylindrical shape. The bottom-side annular portion 328 extends radially inward from the upper edge of the bottom-side cylindrical portion 327 and has an annular shape. The bottom-side cylindrical portion 327 and the bottom-side annular portion 328 may be connected by a smooth curved surface having an appropriate radius of curvature.

As shown in FIG. 5 , the connection member 8 has a neck portion 81 and a lower partition plate 82 . The neck portion 81 is arranged radially outside the burner portion 2 and has a cylindrical shape. The lower partition plate 82 extends substantially horizontally radially outward from the lower end side of the neck portion 81 .

As shown in FIGS. 9 and 10 , the neck portion 81 of the connecting member 8 has a neck-side cylindrical portion 811 and a neck-side annular portion 812 . The neck-side cylindrical portion 811 has a cylindrical shape. The neck-side annular portion 812 extends radially inward from the upper edge of the neck-side cylindrical portion 811 and has an annular shape. The neck-side cylindrical portion 811 and the neck-side annular portion 812 may be connected by a smooth curved surface having an appropriate radius of curvature.

The upper portion of the neck-side cylindrical portion 811 of the connecting member 8 is fitted into the bottom-side cylindrical portion 327 of the bottom portion 324 of the outer cylinder 3 . The neck-side annular portion 812 of the connecting member 8 is in contact with the lower surface of the bottom-side annular portion 328 of the bottom portion 324 of the outer cylinder 3 . Thus, the upper portion of the neck portion 81 of the connecting member 8 is connected to the bottom portion 324 of the outer cylinder 3 .

FIG. 11 is a partial cross-sectional plan view schematically showing the outer cylinder 3, the partition plate 17, and the convection fan 5. As shown in FIG. In FIG. 11, only the outer cylinder 3 is shown in cross section.
As shown in FIG. 11, a partition plate 17 is provided around the outer cylinder 3 to cover the left and right sides and the rear side of the outer cylinder 3 . The partition plate 17 is installed and supported on the horizontal plate 15 (see FIG. 5). The partition plate 17 includes side partition plates 171 , 171 arranged on both left and right sides of the outer cylinder 3 , respectively, and a rear partition plate 172 arranged behind the outer cylinder 3 .

The upper edge of the rear partition plate 172 is positioned below the upper edge of the side partition plate 171 . That is, an opening 173 is formed above the rear partition plate 172 between the left and right side partition plates 171 , 171 . Air sent from the convection fan 5 passes through the opening 173 and hits the heat exchanger 4 and the outer cylinder 3 .

The side partition plate 171 includes a rear partition plate 174 , an inclined partition plate 175 and a front partition plate 176 . The rear partition plate 174 extends forward from the edge of the rear partition plate 172 in the horizontal direction (horizontal direction). The inclined partition plate 175 extends obliquely forward from the front edge of the rear partition plate 174 so as to separate from the outer cylinder 3 as it goes forward. The front partition plate 176 extends laterally (horizontal direction) from the front edge of the inclined partition plate 175 . A decorative plate 18 is attached to the front surfaces of the inclined partition plate 175 and the front partition plate 176 . The vertically long blowout portion 13 is formed between the front portion 311 of the outer cylinder 3 and the inclined partition plate 175 .

As shown in FIGS. 1 and 3, a guide member 9 is provided above the outer cylinder 3 . The guide member 9 guides the air sent from the convection fan 5 so as to hit the surface of the front portion 311 . The guide member 9 also functions as a decorative plate.

As shown in FIG. 3, a horizontal space 35 extending forward from the rear is formed above the outer cylinder 3 . The horizontal space 35 is specifically formed between the outer cylinder 3 and the upper partition plate 19 . The guide member 9 is arranged in front of the horizontal space 35 . A center line 94 extending in the horizontal direction passing through the vertical center of the guide member 9 has a median diameter between the inner diameter of the blades 54 of the convection fan 5 (the outer diameter of the boss portion 53) and the outer diameter of the blades 54. It is located above the upper end 55 of the circle.

12 is a cross-sectional perspective view of the outer cylinder 3, the upper partition plate 19 and the guide member 9. FIG. 13 is a side sectional view of the outer cylinder 3, the upper partition plate 19 and the guide member 9. FIG. FIG. 14 is a side cross-sectional view for explaining a method of assembling the guide member 9. As shown in FIG.

As shown in FIGS. 12 and 13, the guide member 9 includes a strip-shaped horizontal first plate portion 91 extending left and right when viewed from the front, and a strip-shaped second plate extending downward from the front edge of the first plate portion 91. a portion 92; The lower edge of the second plate portion 92 of the guide member 9 is positioned slightly below the upper surface of the peripheral wall portion 312 of the outer cylinder 3 . The guide member 9 also has a side surface portion 95 extending rearward from the left and right edges of the second plate portion 92 , and a mounting surface portion 96 extending left and right from the rear edge of the side surface portion 95 . As shown in FIG. 13 , the guide member 9 may further have a strip-shaped third plate portion 93 extending rearward from the lower edge of the second plate portion 92 . The rear edge of the third plate portion 93 is spaced forward from the front surface portion 311 of the outer cylinder 3 .

As shown in FIGS. 12 to 14, the first plate portion 91 of the guide member 9 is attached to the upper front surface of the upper partition plate 19 by screwing through the attachment holes 911 (see FIG. 12). Further, the mounting surface portion 96 of the guide member 9 is mounted to the main body case 1 by screwing using mounting holes 961 (see FIG. 12).

Next, the operation of the heating device 100 according to this embodiment will be described.
When the operation switch is turned on in the operation unit 11, the burner unit 2 starts preheating, the fuel oil supply unit 6 and the air supply unit 7 are driven, and the burner unit 2 burns the fuel.

As shown in FIG. 3, the flame and combustion gas generated in the burner portion 2 flow and rise in the direction indicated by the arrow 25 (see also FIG. 11) while completely burning within the outer cylinder 3. As shown in FIG. After passing through the outer cylinder 3 , the combustion gas flows into the heat exchanger 4 , passes through the heat exchanger 4 , and is exhausted to the outside as exhaust gas through an exhaust pipe 43 . At this time, the outer cylinder 3 is heated by flames and combustion gas generated by the burner portion 2, and radiant heat is emitted forward from the front surface portion 311 of the outer cylinder 3. As shown in FIG.

Then, when the driving of the convection fan 5 is started, the indoor air is drawn into the main body case 1 by the convection fan 5 . The air taken in by the convection fan 5 flows in the direction indicated by the arrow 56a in FIG. 11, is heated by exchanging heat with the heated outer cylinder 3 and the heat exchanger 4, and becomes warm air to form a vertically elongated blowing section. 13 blows out into the room.
Thus, indoor heating is performed.

Part of the air from the convection fan 5 is sent forward through the horizontal space 35 formed above the outer cylinder 3 as indicated by the arrow 56b in FIG. lead and flow Also, part of the air from the convection fan 5 passes between the back surface portion 321 of the outer cylinder 3 and the rear partition plate 172, and flows between the bottom portion 324 of the outer cylinder 3 and the connecting member 8, as indicated by an arrow 56c. After passing between the lower partition plate 82, it flows out of the main body case 1. - 特許庁Furthermore, part of the air from the convection fan 5 passes through the back side of the rear partition plate 172 , is sent to the lower part inside the main body case 1 of the heating device 100 , and then flows out of the main body case 1 .

As described above, the heating device 100 according to the present embodiment includes the burner portion 2 for combustion, the outer cylinder 3 disposed above the burner portion 2, and the burner portion 2 and the outer cylinder 3. and a connection member 8 that is connected to the body. The connecting member 8 has a cylindrical neck portion 81 arranged radially outward of the burner portion 2 and a lower partition plate 82 extending radially outward from the lower end side of the neck portion 81 . An upper portion of the neck portion 81 is connected to the bottom portion 324 of the outer cylinder 3 .

In this embodiment, by interposing the connecting member 8 between the burner portion 2 and the outer cylinder 3, the outer cylinder 3 becomes hot due to the passage of the flame and combustion gas generated in the burner portion 2. It is possible to suppress the heat from being transmitted to the lower part inside heating device 100 (hereinafter, also simply referred to as “device”).
That is, since the outer cylinder 3 and the connecting member 8 are connected at the upper portion of the neck portion 81 (see FIG. 9), the contact area between the outer cylinder 3 and the connecting member 8 can be reduced. As a result, heat transfer from the outer cylinder 3, which becomes hot, to the lower side of the connecting member 8 can be suppressed.
Between the bottom portion 324 of the outer cylinder 3 and the lower partition plate 82 of the connecting member 8, that is, between the bottom portion 324 of the outer cylinder 3 and the burner portion 2, there is a circulation space around the outer circumference of the neck portion 81 (see FIG. 9). It is formed. Therefore, the air behind the outer cylinder 3 can easily move through the circulation space. As a result, the connection member 8 is cooled, and the lower parts in the apparatus such as the burner section 2 are cooled via the connection member 8, and the hot air can be released without staying.
Therefore, according to the present embodiment, it is possible to provide the heating device 100 capable of suppressing an excessive rise in the temperature of the burner portion 2 and the lower portion of the device.

9 and 10, the bottom portion 324 of the outer cylinder 3 has an opening portion 325, a bottom-side cylindrical portion 327, and a bottom-side annular portion 328 in this embodiment. The opening 325 is positioned above the burner section 2 . The bottom-side cylindrical portion 327 extends upward from the inner peripheral edge of the opening 325 and has a cylindrical shape. The bottom-side annular portion 328 extends radially inward from the upper edge of the bottom-side cylindrical portion 327 and has an annular shape. The neck portion 81 of the connecting member 8 has a neck-side cylindrical portion 811 and a neck-side annular portion 812 . The neck-side cylindrical portion 811 has a cylindrical shape. The neck-side annular portion 812 extends radially inward from the upper edge of the neck-side cylindrical portion 811 and has an annular shape. The upper portion of the neck-side cylindrical portion 811 is fitted into the bottom-side cylindrical portion 327 , and the neck-side annular portion 812 is in contact with the lower surface of the bottom-side annular portion 328 .
In this configuration, the upper portion of the neck-side cylindrical portion 811 is fitted into the bottom-side cylindrical portion 327, so that the outer cylinder 3 and the connecting member 8 are positioned relative to each other in the horizontal direction. Further, since the neck-side annular portion 812 is in contact with the bottom surface of the bottom-side annular portion 328, the outer cylinder 3 and the connecting member 8 are positioned relative to each other in the vertical direction. Therefore, the connection member 8 can be reliably positioned and connected to the outer cylinder 3 while reducing the contact area.

In this embodiment, as shown in FIGS. 4 and 5, the burner section 2 is attached to the lower surface side of the lower partition plate 82 of the connection member 8, and the connection member 8 is placed horizontally inside the heating device 100. It is mounted on a horizontal plate 15 installed on the .
In this configuration, the outer cylinder 3 and the burner section 2 can be installed and supported on the horizontal plate 15 via the connecting member 8 .

Further, in this embodiment, as shown in FIG. 3, a convection fan 5 is arranged behind the outer cylinder 3 and blows air forward.
In this configuration, the air from the convection fan 5 can be actively sent forward through the circulation space formed between the bottom 324 of the outer cylinder 3 and the lower partition plate 82 of the connecting member 8 . As a result, it is possible to further cool down the lower parts in the apparatus such as the burner section 2 and to release more hot air.

Although the present invention has been described above based on the embodiments, the present invention is not limited to the configurations described in the above embodiments. The configuration of the present invention can be changed as appropriate without departing from the gist of the invention, including appropriate combinations or selections of the configurations described in the above embodiments. In addition, addition, deletion, and replacement can be made for a part of the configuration of the above embodiment.

The connection structure between the upper portion of the neck portion 81 and the bottom portion 324 of the outer cylinder 3 is such that the upper portion of the neck portion side cylindrical portion 811 is fitted into the bottom portion side cylindrical portion 327 and the neck portion side annular portion 812 is fitted to the bottom surface of the bottom portion side annular portion 328 . It is not limited to the configuration shown in FIG. 10 of contact. For example, the neck portion 81 has an annular neck-side annular portion extending radially outward from the upper edge of the neck-side cylindrical portion 811 , and the neck-side annular portion contacts the lower surface of the bottom portion 324 of the outer cylinder 3 . You may have
Further, as shown in FIGS. 4 and 5, the lower partition plate 82 and the horizontal plate 15 of the connection member 8 are separately formed in the above embodiment, but they may be formed integrally. .

15 Horizontal plate 2 Burner part 3 Outer cylinder 324 Bottom part 325 Opening part 327 Bottom side cylindrical part 328 Bottom side annular part 5 Convection fan 8 Connection member 81 Neck part 811 Neck side cylindrical part 812 Neck side annular part 82 Lower partition plate 100 Heating device

Claims (3)

a burner unit for combustion;
an outer cylinder disposed above the burner;
a connection member interposed between the burner portion and the outer cylinder,
The connection member is
a cylindrical neck portion arranged radially outward of the burner portion;
a lower partition plate extending radially outward from the lower end side of the neck,
the top of the neck is connected to the bottom of the barrel ,
The bottom is
an opening positioned above the burner;
a cylindrical bottom-side cylindrical portion extending upward from the inner peripheral edge of the opening;
an annular bottom-side annular portion extending radially inward from an upper edge of the bottom-side cylindrical portion;
The neck is
a cylindrical neck-side cylindrical portion;
an annular neck-side annular portion extending radially inward from an upper edge of the neck-side cylindrical portion;
A heating device, wherein an upper portion of the neck-side cylindrical portion is fitted into the bottom-side cylindrical portion, and the neck-side annular portion is in contact with a lower surface of the bottom-side annular portion. The burner part is attached to the lower surface side of the lower partition plate of the connection member,
The heating device according to claim 1 , wherein the connection member is mounted on a horizontal plate installed horizontally within the heating device. The heating device according to claim 1 or 2 , further comprising a convection fan disposed behind the outer cylinder and blowing air forward.

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