JPH10176807A - Surface combustion burner device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the uniformity of temperature distribution due to divided combustion as well as the stability of combustion due to the formation of small eddies by a method wherein supporting bodies are provided at the upstream side and the downstream side of a metallic fibrous surface combustion member while the burner is constituted so that the metallic fibrous surface combustion member is sandwiched by the supporting bodies. SOLUTION: A surface combustion burner device is constituted of a metallic fibrous surface combustion member 1 and rod-like supporting bodies 2, installed at the upstream side and downstream side of the surface combustion member 1 so as to support the same like as a sandwich. The surface combustion member, consisting of a felt type mat, obtained by sintering heat resistant metallic fibers, for example, is employed and when mixture is introduced from the upstream side of the metallic fibrous surface combustion member 1 into an arrow sign direction in a diagram, ooze-out combustion, having stabilized short flame, is started on the surface of the downstream side of the surface combustion member 1. In this case, a small vortex is formed near the supporting bodies 2, provided at the downstream side, and the vortex includes circumferential combustion gas and improve flame stabilizing effect while becoming the continuous igniting source of excellent combustion whereby the stability of combustion can be retained effectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface combustion burner device.

[0002]

2. Description of the Related Art As shown in FIGS. 5 and 6, there is a surface combustion burner which is used by passing gas and air through a metal fibrous surface burning member, burning the gas and air on the surface, and heating the surface. The surface combustion burner supports the metal fiber surface combustion member by fixing the periphery with a frame. When the metal fibrous surface burning member has flexibility, only when soft, a support is provided on the upstream side, and the metal fibrous surface burning member is fixed to the support by a wire, a screw, an adhesive, or the like. .

In the conventional example, when the metal fibrous surface burning member has flexibility, the metal fibrous surface burning member itself warps downstream due to a mixed gas flow from the upstream side, and The force to separate from the support acts on the metal fibrous surface burning member itself, and the fixed portion is easily broken. In the case of supporting only the periphery, warping to the downstream side of the metal fibrous surface burning member, due to expansion and contraction,
A large force is applied to the supporting portion, and the metal fibrous surface burning member itself is damaged. If the metal fibrous surface burning member is not sufficiently fixed to the support or the like, it resonates with the furnace pressure vibration, the burner itself vibrates, and the metal fibrous surface burning member fatigues due to repeated deformation, It may be damaged. It is complicated to fix the burner to the furnace body using a wire or the like from the upstream side of the burner, and the number of fixing points is limited.

[0004]

In order to solve the above-mentioned problems, according to the present invention, supports are provided on the upstream and downstream sides of a metal fibrous surface burning member, and the supports are used to support the metal fibrous surface. The present invention proposes a surface combustion burner device characterized in that a combustion member is sandwiched.

Further, the present invention proposes a surface combustion burner device characterized in that in the above structure, the support is made of a rod.

Further, the present invention proposes a surface burning burner device having the above-mentioned structure, wherein the support is made of a knitted material.

Further, the present invention proposes a surface combustion burner device characterized in that in the above structure, the support is formed in a lattice shape.

Further, according to the present invention, in the above configuration,
The support is characterized in that when the metal fibrous surface burning member forms a curved surface, the support is also curved.
It proposes a surface combustion burner device.

Further, the present invention proposes a surface combustion burner device in which the upstream and downstream supports are connected to each other by a support member.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the surface combustion burner device of the present invention will be described with reference to the drawings. FIG. 1 shows a configuration in which a rod-shaped support 2 is installed in a sandwich shape on the upstream side and the downstream side of the metal fibrous surface combustion member 1. Further, as shown in FIG. 2, a support 2 made of a stitch may be formed in a sandwich shape on the upstream side and the downstream side of the metal fibrous surface burning member 1. In addition, as shown in FIG. 3, when the metal fibrous surface burning member 1 has a curved surface,
The support 2 is configured to have a curved surface corresponding to the curved surface. FIG. 4 shows a configuration in which the support members 2 installed on the upstream side and the downstream side are connected by a support member 3. The support member 3
For example, in addition to a wire or the like, the connection may be made with a support fitting. The metal fibrous surface burning member 1 is made of, for example, a felt-like mat (thickness of 2 to 4 mm) obtained by sintering a heat-resistant metal fiber having a wire diameter of several tens of microns.

In the above configuration, when the air-fuel mixture is introduced from the upstream side of the metal fibrous surface combustion member 1 in the direction of the arrow in the figure, a very stable short-circuit occurs on the downstream side surface. Flame leaching combustion begins. At this time, a small vortex is formed in the vicinity of the support 2 provided on the downstream side, and this engulfs the surrounding combustion gas, becomes a continuous ignition source of good combustion, and further improves the flame holding effect. , Effectively maintain stable combustion. In particular, when the support 2 is made of a rod-like material, a mesh-like material, or when it is made of a rod-like material or the like in a lattice, so-called division of combustion is achieved, and uniform combustion is realized. As a whole, combustion with good temperature distribution can be achieved.

[0014]

As described above, the present invention has the following effects. a. By sandwiching the surface combustion burner composed of the metal fibrous surface combustion section from the upstream side and the downstream side, in addition to achieving the uniformity of the temperature distribution by split combustion and the stability of combustion by forming small eddies, A robust burner that does not cause breakage can be provided. b. The shape of the surface combustion burner itself can be changed depending on the shape of the support, and can be adapted to the shape of the furnace body. c. Since the metal fibrous surface burning portion is supported by the support from both sides, vibration can be avoided during combustion. d. Since the metal fibrous surface burning portion is supported by the support from both sides thereof, fixation with a wire or the like can be omitted.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram including an overhead view of the present invention.

FIG. 2 is an explanatory view including a cross-sectional view showing another embodiment.

FIG. 3 is an explanatory view including a cross-sectional view showing another embodiment.

FIG. 4 is an explanatory view including a cross-sectional view showing another embodiment.

FIG. 5 is an explanatory front view showing an example of a conventional example.

FIG. 6 is an explanatory front view showing an example of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal fibrous surface combustion member 2 Support 3 Support member

Claims (6)

[Claims] 1. A surface combustion burner characterized in that supports are provided on an upstream side and a downstream side of a metal fibrous surface burning member, and the metal fibrous surface burning member is sandwiched by the supports. apparatus. 2. The surface combustion burner device according to claim 1, wherein the support is made of a rod. 3. The surface combustion burner device according to claim 1, wherein the support is made of a stitch. 4. The burner according to claim 1, wherein the supports are arranged in a grid. 5. The support according to claim 1, wherein the support has a curved surface when the surface of the metal fibrous surface burning member has a curved surface. Surface burner equipment. 6. The surface combustion burner device according to claim 1, wherein the upstream and downstream supports are connected by a support member.