JP3134282B2 - Burner mounting structure for combustor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a burner mounting structure which can be reduced in cost and is easy to assemble.

[0002]

2. Description of the Related Art A combustion portion of a combustion burner is located above a blowing air chamber mounted on a bottom plate of a frame body, and the blowing air chamber is connected to an outlet of a combustion blowing fan by a blowing duct. Things are mostly. Then, the combustion air flowing upward from the blowing air chamber is uniformly supplied from the entire circumference of the combustion portion located above, thereby enabling stable combustion.

Further, instead of connecting a combustion air blower mounted at an appropriate position of a frame with a blower air chamber by a blower duct, a combustion air blower is directly incorporated in the blower air chamber.

[0004]

A recent combustor is preferred to have a compact shape, and the conventional structure in which the combustion portion of the combustion burner is disposed above the blower air chamber has a problem that the entire position of the combustion burner is limited. As a result, it was difficult to keep the shape of the combustor compact.

[0005] The structure in which the outlet of the combustion fan is connected to the blower air chamber by a blower duct has the advantage of increasing the degree of freedom in the mounting position of the combustion blower fan. Special fixtures are required, and the assembly process to attach the fixtures and the repair and
This makes maintenance very difficult. Therefore, the structure in which the ventilation air chamber is interposed is not always preferable because the number of parts to be used becomes very large.

Further, the structure in which the combustion air blower is directly incorporated in the air blower chamber for the purpose of reducing the number of parts not only makes the height of the combustor frame higher, but also makes it necessary to maintain the combustion air blower fan at the time of maintenance. This was very difficult because it could not be performed without removing most of the parts.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a burner mounting structure for a combustor which can be implemented with an extremely small number of parts without using a blower air chamber. An opening 2, a blower motor 3 located in the frame 1 away from the blower opening 2, and a blower fan 4 attached to the blower motor 3 and located outside the frame 1, Has a blower cylinder 5 formed in the frame 1 and
A bottomed cylinder that covers the blower opening 2 and the outside of the blower fan 4, attaches a blower scroll 7 having an inlet 6 to the blower fan 4 to the back plate 1 a of the frame 1, and has a large number of air holes 8 a in a side wall. And a cylindrical wind tunnel 9 covering the outside while being connected to the upper edge of the pot 8, and an air supply cylinder 10 is erected from an opening 9 a provided in a side wall of the cylindrical wind turbine 9. Then, a fixing tool 11 for attaching the wind tunnel 9 to the bottom plate 1b of the frame 1 while pressing the air supply cylinder 10 of the wind tunnel 9 against the blower cylinder 5 is used.

Further, in the mounting structure of the blower cylinder 5 and the air supply cylinder 10 of the wind tunnel 9, an outwardly extending flange 10a is provided at the tip of the air supply cylinder 10, and the blower cylinder formed on the back plate 1a of the frame body 1. 5 is a packing 12 which is in a ring shape and abuts against the back plate 1a.
And the airtight member 13 is interposed between the wind tunnel 9 and the bottom plate 1b of the frame 1 to maintain the airtightness of the combustion air flow path in the assembly process.

In addition, as in the case of using a blowing air chamber,
In order to stabilize combustion in the pot 8, a windbreak is formed between the opening 9a provided in the side wall of the wind tunnel 9 and the side wall of the pot 8 and the bottom plate 1b of the frame body 1. A plate 15 is provided.

[0010]

According to the present invention, a blower motor 3 and a blower fan 4 are directly attached to a back plate 1a of a frame 1, and the back plate 1a of the frame 1 has a blow opening 2 and a frame 1 from the blow opening 2. An air blower cylinder 5 extending inward is provided, and a blower fan 4 and a blower scroll 7 covering the blower opening 2 are attached to the back plate 1a, so that the blower fan 4 and the blower scroll 7 provided at appropriate places on the back plate 1a are blowers. And, at the same time, an air supply channel can also be configured.

An opening 9a and a gas supply cylinder 10 extending laterally are provided on a side wall of a wind tunnel 9 which covers the outside of a pot 8 constituting a combustion burner.
The wind tunnel 9 is fixed to the bottom plate 1b of the frame 1 while being pressed against
Therefore, when the burner is installed, the air supply air flow path is completed at the same time.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings showing an embodiment. Reference numeral 1 denotes a frame of a combustor constituting a heater, 1a denotes a frame 1
1c is a front plate of the frame 1, and the frame 1
The lower part has a burner composed of a pot-type oil burner. Reference numeral 16 denotes a combustion chamber located at the center of the frame 1,
Reference numeral 7 denotes a convection blower provided on a back plate 1a behind the combustion chamber 16, reference numeral 18 denotes a hot air outlet provided on a front plate 1c in front of the combustion chamber 16, and reference numeral 19 denotes a heat exchanger disposed above the combustion chamber 16. The room air is sent into the frame 1 by the convection blower 17, turned into warm air by the combustion chamber 16 wall and the heat exchanger 19, and is blown into the room from the warm air outlet 18.

3 is a blower motor for taking in the combustion air of the burner, and 4 is a blower fan.
Is mounted at an appropriate position on the back plate 1 a of the frame 1, and is disposed inside the frame 1 with the rotation shaft protruding out of the frame 1. The blower fan 4 is attached to the rotation shaft of the blower motor 3 outside the back plate 1a.

2 is a back plate 1a of the frame 1 behind the burner.
5 is a blower tube formed from the blower opening 2 toward the inside of the frame 1, and the blower tube 5
a, or may be formed integrally by pressing the back plate 1a with a press.

Reference numeral 7 denotes a blower scroll that covers the blower fan 4. The blower scroll 7 is formed of a metal sheet or a synthetic resin and is attached to the back plate 1 a of the frame 1. The blower scroll 7 is formed so as to cover not only the periphery of the blower fan 4 but also the blower opening 2. The blower scroll 7 constitutes a fan casing between the back plate 1 a of the frame 1 and An air blowing channel toward the air blowing opening 2 is formed at the same time with the plate 1a.

Reference numeral 6 denotes an intake port provided in a blower scroll 7 opposed to the blower fan 4. When the blower fan 4 rotates, combustion air is sucked from the intake port 6 by the function of the blower scroll 7, and the combustion air is supplied to the blower scroll. The air blows from the blower tube 5 into the frame 1 through a space between the back plate 7 and the back plate 1a.

Reference numeral 8 denotes a bottomed cylindrical pot which also serves as a vaporizing portion and a combustion portion of the burner, 8a denotes a large number of air holes formed in the side wall of the pot 8, and 9 denotes a wind tunnel provided outside the pot 8. The upper end of both the wind tunnel 9 and the pot 8 is joined and closed, and the lower end of the wind tunnel 9 is slightly extended from the bottom of the pot 8 to form a flange. It is attached to the bottom plate 1b.

9a is an opening provided on the side wall of the cylindrical wind tunnel 9;
Reference numeral 10 denotes an air supply cylinder that stands upright from the opening 9a.
The height position of 0 coincides with the blower cylinder 5. Reference numeral 11 denotes a fixing tool formed by screws for attaching the wind tunnel 9 to the bottom plate 1b of the frame 1 while pressing the air supply cylinder 10 having the same height position toward the blower cylinder 5, and using a back plate 1a in advance. The assembly of the combustion section is completed only by tightening the fixture 11 to the blown portion of the burner, and the burner can be completed very easily.

For this reason, the air blower chamber used in the conventional product is eliminated, and the blower passage instead of the blower duct is provided by the blower scroll 7.
And the back plate 1a, and the conventional operation of fixing the air duct is performed by fixing the wind tunnel 9 to the bottom plate 1b. Therefore, the number of parts is greatly reduced, and the assembling process is extremely simplified. Things.

Conventional air ducts are formed of rubber or soft synthetic resin pipes, and air-tightness is obtained by the operation of fixing the air ducts. In the present invention, the mounting portion between the air supply cylinder 10 and the wind tunnel 9 becomes a problem.

Reference numeral 12 denotes a ring-shaped packing fitted to the blower cylinder 5, 10a denotes a flange formed by expanding the end of the air supply cylinder 10 outward, and 13 denotes a soft plate-like material, liquid or gel-like mounting. An air-tight member made of a post-curing material. The air-supply cylinder 10 of the wind tunnel 9 pressed against the blower cylinder 5 has a back plate 1a of the frame 1 and a flange 10
a, the airtightness is maintained between the air blower cylinder 5 and the blower cylinder 5 after being tightened by the fixture 11, such as when the thick soft material 13 is used between the wind tunnel 9 and the bottom plate 1b of the frame 1. Even if the center of the air supply cylinder 10 goes wrong, airtightness can be maintained reliably.

Further, the conventional blowing air chamber has a function of supplying uniform air from bottom to top toward the combustion part of the burner.
When the opening 9a is provided on the side of the wind tunnel 9 as in the present invention, combustion may become unstable depending on the position of the air hole 8a of the pot 8.

Reference numeral 15 denotes a windbreak plate provided between the opening 9a provided on the side wall of the wind tunnel 9 and the side wall of the pot 8, and the windbreak plate 15 in the embodiment is near the upper end joint between the wind tunnel 9 and the pot 8. It is attached to and extends downward. Reference numeral 14 denotes a ventilation gap formed between the windshield 15 extending downward and the bottom plate 1b of the frame 1. The combustion air flowing in from the air supply cylinder 10 hits the windshield 15 and is diverted. 14 flows into the gap between the bottom of the pot 8 and the bottom plate 1b of the frame 1, so that fresh air can also flow in from the air holes 8a near the bottom of the pot 8, and the fuel is vaporized in the pot 8. -Combustion is stable.

[0024]

According to the present invention, the blower, which is a component of the burner, can use the back plate 1a of the frame 1 and can be arranged at any position on the back plate 1a. Since it can be formed by specifying the shape of the blower scroll 7 attached to the back plate 1a, the number of required parts is greatly reduced. Further, a pot 8 constituting a burner burning section is attached to the upper edge of the wind tunnel 9, and the bottom plate of the wind tunnel 9 uses the bottom plate 1 b of the frame body 1.
The burner can be completed simply by fixing it at 1, and the number of components of the burner is greatly reduced as compared with the conventional product, and the assembling process is simplified.

The packing 12 mounted on the blower tube 5
Is provided and the space between the flange 10a at the end of the air supply cylinder 10 and the back plate 1a of the frame 1 is sealed, so that even when the center of the wind tunnel 9 is misaligned, airtightness can be maintained. Things.

Further, since the windbreak plate 15 is provided between the opening 9a of the wind tunnel 9 and the side wall of the pot 8 to form the ventilation gap 14 between the windshield 9 and the bottom plate 1b, the supply of combustion air is stable and good. Combustion is now possible.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 1a Back plate 1b Bottom plate 2 Blow opening 3 Blow motor 4 Blow fan 5 Blow cylinder 6 Intake port 7 Blow scroll 8 Pot 8a Air hole 9 Wind tunnel 9a Open 10 Supply cylinder 10a Flange 11 Fixture 12 Packing 13 Airtight member Ventilation gap 15 Windbreak board

──────────────────────────────────────────────────の Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F23D 5/04 F24C 5/00-5/02 F24H 3/04 301

Claims (3)

(57) [Claims] 1. A blower opening (2), a blower motor (3) located in the frame (1) apart from the blower opening (2), and a frame attached to the blower motor (3). A blower fan 4 positioned outside the body 1, a blower tube 5 is formed in the blower opening 2 toward the inside of the frame 1, and the blower opening 2
The outside of the blower fan 4 is covered, a blower scroll 7 having an air inlet 6 for the blower fan 4 is attached to the back plate 1a of the frame 1, and a bottomed cylindrical pot having a large number of air holes 8a on a side wall. 8
And a tubular wind tunnel 9 that covers the outside while being connected to the upper edge of the pot 8, and an air supply cylinder 10 is erected from an opening 9 a provided in a side wall of the tubular wind tunnel 9. While pressing the air supply cylinder 10 of the trunk 9 against the blower cylinder 5, the wind tunnel 9 is attached to the bottom plate 1 b of the frame 1.
A burner mounting structure for a combustor having a fixture 11 to be mounted on the burner. 2. An outwardly extending flange 10a is provided at the end of the air supply cylinder 10, and a packing 12 is mounted on the air blower cylinder 5 formed on the back plate 1a of the frame body 1 so as to contact the back plate 1a in a ring shape. The burner mounting structure according to claim 1, wherein an airtight member (13) is interposed between the wind tunnel (9) and the bottom plate (1b) of the frame (1). 3. A windproof plate 15 which forms a ventilation gap 14 between the opening 9a provided in the side wall of the wind tunnel 9 and the side wall of the pot 8 and the bottom plate 1b of the frame 1. The burner mounting structure of the combustor according to the above.