JP2849061B2 - Furnace wall integrated regenerative combustion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a regenerative combustion apparatus having a burner and a regenerator.

[0002]

2. Description of the Related Art As shown in FIG. 8, two regenerative combustion devices 2 generally form a set, and each burner 4 is connected to a regenerator 6 filled with a regenerator. Requires more space than non-thermal storage combustion devices. Therefore, in order to reduce the space occupied by the regenerative combustion device, it is conceivable to provide a space in a part of the furnace wall, accommodate a heat storage body in the space, and use it as a heat storage device. By doing so, the space occupied solely by the regenerator is reduced, but there are the following problems.

[0003]

First, the first problem is that the furnace wall is composed of an outer metal furnace shell and a heat insulating material provided inside thereof, and a space is formed in a part thereof. The use of the regenerator reduces the heat insulating effect of the furnace wall.
The second problem is that if a space for the regenerator is formed on the furnace wall,
That is, the thickness of the heat insulating material in that portion decreases, and the strength decreases. A third problem is that the furnace wall with reduced strength is heated / cooled at each switching cycle of burner combustion / non-combustion, and repeats expansion and contraction each time to promote fatigue fracture.

[0004]

Therefore, in the furnace wall-integrated regenerative combustion device of the present invention, a part of the wall of the regenerator and the furnace wall to which the regenerative combustion device is attached are shared.

[0005]

As a result, the heat storage wall is not required for the shared wall, and the space occupied by the heat storage is reduced.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the drawings. 1 and 2 show a regenerative combustion device according to the present invention. In this figure, reference numeral 8 denotes a furnace wall, in which an opening 10 is formed. Numeral 12 denotes a regenerative combustion device, which comprises a burner 14 and a regenerator 16.
Is provided integrally. The cylindrical body wall 1 of the burner 14
8 is fitted into the opening 10. A part of the main body wall 20 of the regenerator 16 is formed integrally with the main body wall 18 of the burner 14, spreads below the burner 14, and forms a part of the furnace outside of the furnace wall 8 located below the burner 14. Enclosure, burner 14
An empty room 22 is formed to communicate the inside of the heat storage unit 16 with the inside of the heat storage unit 16. The bottom opening of the empty room 22 is covered with a permeable member, for example, a wire mesh 24, and the heat storage body 2 is placed on the wire mesh 24.
6 are filled. The outside of the main body walls 18 and 20 is covered with a metal outer shell 28. This outer shell 28 is also
4 at a predetermined interval from the bottom of the wire mesh.
An empty room 30 is formed below the space 4. A supply / exhaust port 32 communicating with the empty chamber 30 is formed at the bottom of the outer shell 28.
The supply / exhaust port 32 is connected to an air supply device and an exhaust gas suction device via a switching valve (not shown). Burner body wall 1
A burner tile 34 is provided inside 8. The burner tile 34 is provided with a fuel nozzle 38 and a plurality of air nozzles 40 arranged around the fuel nozzle 38 at equal intervals. Also,
A fuel ejector 44 is inserted into the fuel nozzle 38 through a hole 42 passing through the burner main body wall 18 and the outer shell 28.

As described above, in the regenerative combustion device 12, the wall of the regenerator 16 is constituted by the furnace wall 8 and the main body wall 20. That is, a part of the furnace wall 8 is used as a wall of the heat storage device 16. Therefore, as shown in FIG. 9, according to the regenerative combustion device 12 of the present invention, the space occupied by the regenerator alone is smaller than that in the case where the furnace wall is not used as the main body wall of the regenerator.

The regenerative combustion device 12 having the above configuration operates as follows. First, at the time of waste heat recovery in which the exhaust gas in the furnace is sucked and the waste heat is collected in the heat storage body 26, the exhaust gas suction device is driven, and the exhaust gas in the furnace causes the air nozzle 40, the vacant chambers 22 and 30 of the burner tile 34 to pass through. Exhausted through.
At this time, the heat of the exhaust gas is recovered by the heat storage body 26. Next, at the time of fuel combustion, the combustion air supplied from the air supply device passes through the empty chambers 30 and 22, contacts the heat storage body 26, and becomes high temperature, and flows from the air nozzle 40 of the burner tile 34 toward the furnace interior 36. Sent out. On the other hand, the fuel injector 44
The fuel is injected into the furnace from the, and is burned by the high-temperature air.

In the above embodiment, the supply / exhaust port 32 is provided at the bottom of the vacant chamber 30, but as shown in FIGS.
May be provided on the side of the empty room 30.

In the above embodiment, the heat storage device 16 is provided below the burner 44. However, as shown in FIGS. 5 and 6, the main body wall 20 is extended to the side and the heat storage device 16 is connected to the fuel ejection device 44. May be provided on the side of the. This embodiment is effective in a case where the height of the regenerative combustion device is limited by a device provided in the surroundings.

Further, as shown in FIG. 7, the main body walls 48A, 48B of the adjacent regenerative combustion devices 12A, 12B may be shared. This further reduces the installation space for each regenerative combustion device.

[Brief description of the drawings]

FIG. 1 is a sectional view of a regenerative combustion device according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view of a modification of the regenerative combustion device shown in FIG.

4 is a cross-sectional view taken along the line IV-IV of the regenerative combustion device shown in FIG.

FIG. 5 is a cross-sectional view of a modification of the regenerative combustion device shown in FIG.

FIG. 6 is a sectional view taken along line VI-VI of the regenerative combustion device shown in FIG.

FIG. 7 is a cross-sectional view showing an example in which two regenerative combustion devices are integrated.

FIG. 8 is a diagram showing a conventional regenerative combustion device and its arrangement.

FIG. 9 is a cross-sectional view showing a comparative example of the regenerative combustion device.

[Explanation of symbols]

8 furnace wall, 12 regenerative combustion device, 14 burner, 16
... regenerator, 20 ... regenerator main body wall, 26 ... regenerator.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Seiwa Nagai, 2-4-7 Kyomachibori, Nishi-ku, Osaka-shi, Osaka Inside Chugai Furnace Industry Co., Ltd. (72) Yu Kitamura 2-chome, Kyomachibori, Nishi-ku, Osaka, Osaka 4-7 Inside Chugai Furnace Industry Co., Ltd. (72) Inventor Takatada Takeuchi 1-172 Higashi-Sendacho, Naka-ku, Hiroshima City, Hiroshima Prefecture Inside Sanken Sangyo Co., Ltd. (56) References JP-A-7-103668 (JP, A) JP-A-8-49835 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) F23L 15/02

Claims (1)

(57) [Claims] 1. A regenerative combustion device in which a regenerator is connected to a burner, wherein a part of a wall of the regenerator and a furnace wall on which the regenerative combustion device is mounted are shared. Combustion device.