JP2003042414A - Surface combustion burner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surface combustion burner in which wasteful flat plates and corrugated plates are not formed and a thermal durability is not deteriorated even when a flame retaining performance is improved. SOLUTION: A plurality of burner units 2 are connected together by superposing and spot-welding lower side surfaces 11 thereof. The plural connected burner units 2 are fitted to a main body case 6. The burner units 2 are arranged in parallel in such a way, so that spaces are produced between the burner units 2, specifically, between the upper side surfaces 9 of the burner units 2. That is, no-burner hole parts 12 can be provided between burner holes 8 without using separate members such as flame retaining members.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plurality of flat plates and corrugated plates which are alternately laminated to form a large number of flame holes between the flat plates and the corrugated plates. The present invention relates to a surface combustion burner that forms a flame-hole forming surface having the following and burns the surface on the flame-hole forming surface. 2. Description of the Related Art Conventionally, a plurality of flat plates and corrugated plates are alternately laminated to form a large number of flame holes between the flat plate and the corrugated plate, and a surface to be burned near the surface of the flame holes. Combustion burners are known. As an attempt to improve the flame holding performance of this type of surface combustion burner, for example, in Japanese Patent Publication No. Hei 6-21684, a cross-sectional shape between a flat plate 3 and a corrugated plate 4 is shown in FIG. The flame hole 7 sandwiching the substantially L-shaped flame holding plate member 13
To block the flame, and a plurality of flameless holes 112 between the flames.
There is already a proposal to provide the above. [0003] However, in the surface combustion burner 101 as described above, since the flame holding plate member 13 is directly heated by the adjacent flame and becomes high temperature,
There was a problem that heat durability deteriorated. In addition, the flat plate 3 having the flame holes 7 at the portions closed by the flame holding plate members 13
There is also a problem that the corrugated sheet 4 is wasted. The object of the present invention is to provide a surface burning burner which solves the above-mentioned problems and improves the flame holding performance, does not form useless flat plates and corrugated plates, and does not deteriorate the heat durability. I do. According to a first aspect of the present invention, there is provided a surface combustion burner, comprising: a plurality of flat plates and a corrugated plate alternately stacked to form the flat plate and the corrugated plate; In a surface burning burner in which a flame hole forming surface having a large number of flame holes is formed between the plates and the surface burning is performed on the flame hole forming surface, a plurality of flat plates and corrugated plates are alternately laminated and held by a frame. A plurality of form-supported burner units are arranged side by side with the frames superimposed to divide the flame hole forming surface into flame holes for each of the burner units, and the frame of the burner unit, The gist is that a non-flame opening is formed between the flame holes by projecting outward and overlapping. [0005] In the surface combustion burner according to the first aspect of the present invention having the above structure, the burner units are connected to each other by forming the frames of the burner units so as to protrude outward and overlapping each other. A space serving as a non-flame hole is formed therebetween. That is, the flame whose surface burns at the flame hole does not continue as a single large flame over the entire flame hole forming surface, but is divided into a plurality of flames each having the flame hole as one unit, so that the flame holding performance is improved. Moreover, since the flame hole forming surface is not closed by the flame holding plate member as in the conventional case, the flame holding plate member is heated to a high temperature, and the heat durability is deteriorated. There is no problem that the corrugated sheet is wasted. DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the structure and operation of the present invention described above, a preferred embodiment of a surface combustion burner of the present invention will be described below with reference to FIGS. I do. FIG. 1 is a schematic perspective view of a surface combustion burner 1 (hereinafter simply referred to as a burner 1), FIG. 2 is a top view, and FIG. 3 is a dashed line in FIGS. It is sectional drawing in AA. FIG. 4 is a schematic perspective view of the burner unit 2. The burner 1 includes a plurality of burner units 2 each including a flat plate 3, a corrugated plate 4, and a frame 5, arranged side by side in a main body case 6 provided with an air-fuel mixture chamber 14 for mixing fuel gas and primary air. It is provided integrally. 1, the main body case 6 and the air-fuel mixture chamber 14 are omitted. [0008] The burner unit 2 is formed by alternately stacking a plurality of flat plates 3 and corrugated plates 4 in a frame 5 to form a large number of flame holes 7 between the flat plates 3 and the corrugated plates 4. is there. A large number of flame holes 7 are connected to form a flame hole portion 8 for each burner unit 2. 1 and 4, one side surface of the frame 5 is omitted, but actually, the frame 5 surrounds four sides of the burner unit 2. The frame body 5 has a surface parallel to the flat plate 3 and the corrugated plate 4 as a longitudinal direction, and the both side surfaces in the longitudinal direction are formed by projecting the lower part outward, and a vertical upper surface 9, an inclined middle surface 10, The lower surface 11 is formed from three surfaces. In the burner unit 2 of the present embodiment, the flat plate 3 and the corrugated plate 4 are alternately arranged on both outer sides, that is, the flat plate 3 is in contact with the inner surface of the frame 5. The present invention is not limited to this, and the corrugated plate 4 may be formed so as to be in contact with the inner surface of the frame 5. Then, a plurality of burner units 2 are connected together by overlapping their lower side surfaces 11 and spot welding. That is, the lower side surface 11 is a contact surface on which the frame 5 is overlapped. The plurality of connected burner units 2 are fitted into the main body case 6. By arranging the burner units 2 in this manner, a space is created between the burner units 2, more specifically, between the upper side surfaces 9 of the burner units 2.
That is, the non-flame hole portion 12 through which the mixed gas does not flow can be provided between the flame hole portions 8 without using another member such as a flame holding plate member. A mixture chamber 14 for mixing the fuel gas and the primary air is provided below the main body case 6. A plurality of fuel gas inlets 15 are opened in a row on one side surface of the mixture chamber 14, and a rectangular primary air inlet 16 is opened on a bottom surface near the fuel gas inlet 15. The nozzles 17 are attached to the fuel gas inlets 15 respectively. In the mixture chamber 14, a distribution plate 19 provided with a number of small holes 18 is provided so as to divide the mixture chamber 14 up and down so as to uniformly distribute the mixture gas to each burner unit 2. . According to the surface combustion burner 1 described above, the fuel gas ejected from the nozzle 17 and the primary air supplied by the air supply fan (not shown) and supplied through the primary air inlet 16 are used as a mixture chamber. 14 and the distribution plate 1
Through the many small holes 18 provided in the burner unit 9, the burner unit 2 is uniformly supplied to the entire burner unit 2. Then, the mixed gas of the fuel gas and the primary air is ejected from the flame holes 7 to burn the surface. The surface combustion burner 1 is an all-primary air burner in which all air required for combustion is taken in as primary air. Since the flame holes 8 of each burner unit 2 are partitioned by the non-flame holes 12, a plurality of rows of elongated flames F divided for each flame hole 8 are formed. That is, a single large flame is not formed over the entire surface of the burner 1, but can be divided into flames for each of the flame holes 8, so that the flame holding performance is improved. In addition, since the flame is not partitioned by closing the flame hole 7 by using the flame holding plate member as in the related art, the useless flat plate 3 or corrugated plate 4 is not used.
Is economical. Further, the heat durability of the burner 1 does not deteriorate due to the heating of the flame holding plate member to a high temperature. Further, the burner 1 can be manufactured simply by manufacturing a plurality of burner units 2 and arranging them in parallel, so that the burner 1 is easy to handle and easy to assemble. Moreover, if one kind of burner unit 2 is prepared, burners with different capacities can be manufactured only by adjusting the number of connected burners. Is very advantageous. Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments at all, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention. is there. For example, in the present embodiment, the burner units 2 are connected to each other by spot welding, but may be connected by another method such as caulking. [0015] As described in detail above, claim 1 of the present invention.
According to the surface combustion burner described above, the flame can be divided into a plurality of flames each having a flame hole portion as one unit by simply arranging the burner units in parallel, and the flame holding performance can be improved. Therefore, since it is not necessary to block the flame holes with a flame holding plate member to partition the flame as in the related art, the flame holding plate member is heated to a high temperature, and the heat durability is deteriorated. There is no problem that the flat plate or the corrugated plate is wasted. In addition, the surface burning burner can be produced simply by producing a plurality of burner units and arranging them side by side, so that handling is easy and assembly is easy. Moreover, surface combustion burners having different capacities can be manufactured only by adjusting the number of connected burner units, so that the manufacturing cost can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view of a surface combustion burner according to an embodiment. FIG. 2 is a top view of the surface combustion burner according to the embodiment. FIG. 3 is a sectional view of a surface combustion burner according to the embodiment. FIG. 4 is a schematic perspective view of a burner unit according to the embodiment. FIG. 5 is a schematic perspective view of a surface combustion burner as a conventional example. [Description of Signs] 1 ... Surface combustion burner, 2 ... Burner unit, 3 ... Flat plate,
4 Corrugated plate, 5 Frame, 7 Flame hole, 8 Flame hole, 11 Lower surface, 12 Flameless port.

Claims (1)

1. A flame hole forming surface having a large number of flame holes between said flat plate and said corrugated plate by alternately laminating a plurality of flat plates and corrugated plates. In the surface combustion burner for performing surface combustion on the flame hole forming surface, a plurality of burner units, in which a plurality of flat plates and corrugated plates are alternately laminated and shape-supported by a frame, are arranged side by side with the frames overlapped. By dividing the flame hole forming surface into flame holes for each of the burner units, the flame of the burner unit is formed so as to protrude outward and overlaps, so that there is no flame between the flame holes. A surface combustion burner characterized by having a mouth formed.