JPH0424266Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a gas burner with a long crater in one direction, and burns and heat-treats the fabric by applying a gas flame across its entire width while running the fabric. used for.

(Prior art) As a gas burner for burning cloth, a large number of thin sheet metal sheets are stacked in the longitudinal direction of the gas burner, oriented perpendicular to the length direction of the gas burner, that is, the width direction of the cloth, and fixed by tightening with through bolts. It is known that a crater was formed by
(Refer to Publication No. 18237 and Utility Model Publication No. 18237). In other words, bolt holes are drilled on the left and right sides of a horizontally long rectangular thin sheet metal, grooves are formed as appropriate on the upper and lower edges of the thin sheet metal, and a large number of these thin sheet metals are stacked, the nozzle hole is formed in the groove on the upper edge, and the nozzle hole is formed in the groove in the lower edge. A supply hole for the mixed gas is formed in each of the grooves, and the nozzle hole and the supply hole are communicated between the upper and lower parts.

(Problems to be Solved by the Invention) However, the gas burner described above requires a large number of thin sheet metals because the crater is formed by stacking a large number of thin sheet metals in a direction perpendicular to the length direction of the gas burner. For example, if the thickness of the sheet metal is 1.5 mm and the effective width of the crater is 1800 mm, 1200 sheets of sheet metal are required. Therefore, by drilling holes in multiple sheets of metal,
It took a great deal of time and effort to assemble the crater by creating a groove, layering the thin metal sheets, and inserting long bolts into the bolt holes.

By using sheet metal along the length of the burner, this invention greatly reduces the number of required sheets, shortens the time required for drilling holes and cutting grooves, and facilitates assembly.

(Means for Solving the Problems) The gas burner of this invention has a crater that is long in one direction, a long and narrow combustion chamber is formed above the crater along the crater, and a mixed gas is supplied from below the crater. In the gas burner, the above-mentioned crater is provided between long front and rear presser plates parallel to the longitudinal direction thereof, and three or more spacers in which a large number of rectangular holes are bored at predetermined intervals in elongated thin sheet metal parallel to the presser plates. , parallel to this, two or more nozzle plates each having a large number of narrow grooves formed on the upper edge of a long thin sheet metal and a large number of wide grooves formed at a predetermined interval on the lower edge thereof are stacked one by one. The narrow groove on the upper edge of the nozzle plate is closed on both front and rear surfaces except the groove bottom by the upper edge of the spacer to form a nozzle hole, and the wide groove on the lower edge of the nozzle plate is closed on both front and rear surfaces except the groove bottom. Both the front and rear surfaces except the bottom are closed by the lower edge of the spacer, and the bottom of the groove communicates through a square hole in the spacer to form a mixed gas supply path, and the square hole in the spacer is connected to the narrow width of the nozzle plate. The groove and the wide groove are characterized in that they communicate with each other via the groove bottoms to form pressure chambers.

(Function) The mixed gas supplied from below the crater enters two or more rows of mixed gas supply paths formed by wide grooves on the lower edges of two or more nozzle plates that make up the crater, and passes through the bottom of the groove to three It enters the pressure chamber formed by the rectangular holes of the two or more spacers, and further enters the bottom of two or more rows of nozzle holes formed by the narrow grooves on the upper edges of the two or more nozzle plates, and from the top surface of these nozzle holes. It is injected into the combustion chamber, burns, and blows out a gas flame of uniform height above the combustion chamber.

(Example) In FIG. 5, the gas burner 1 includes a pair of upper and lower main bodies 2, which are long in the width direction (perpendicular to the plane of the paper).
2 and the lower body 3 are connected with bolts 2a,
A first pressure chamber 4 having a U-shaped cross section is formed in the lower body 3, and a second pressure chamber 5 having a trapezoidal cross section is formed between the lower parts of the upper bodies 2, 2. communicate with each other through a first nozzle hole 3b formed in the top plate 3a of the lower body 4, and a crater 11 is held at the upper end of the second pressure chamber 5. A pair of front and rear L-shaped members 6 made of ceramic are mounted on the upper surface of the upper main body 2.
6 is fixed by a fitting 7a and a bolt 7b, forming a combustion chamber 10 above the crater 11. Note that cooling water circulation pipes 8, 8 are inserted through the upper main bodies 2, 2 mentioned above.

As shown in FIGS. 1 to 4, the crater 11 has a front spacer 14, a front nozzle plate 15, an intermediate spacer 16, a rear nozzle plate 17, and a It is formed by arranging the rear spacers 18 one on top of the other in order and tightening them with a plurality of bolts 19 to form a pair. The above-mentioned front spacer 14, intermediate spacer 16 and rear spacer 18 are made of horizontally long rectangular holes 14a, 16a, 18a and bolt holes 1, respectively, in an elongated thin sheet metal.
It is made by drilling holes 4b, 16b, and 18b. However, the square holes 16a of the intermediate spacer 16 are arranged in a staggered manner with respect to the square holes 14a of the front spacer 14, and one end of the square holes 14a of the front spacer 14 and the other end of the square holes 16a of the intermediate spacer 16 are partially connected to each other. The lengths and pitches of the square holes 14a and 16a are set so that they overlap, and similarly, the square holes 18a of the rear spacer 18 are arranged in a staggered manner with respect to the square holes 16a of the intermediate spacer 16, and the square holes 18a of the intermediate spacer 16 are arranged in a staggered manner. The square hole 1 is arranged so that one end of the hole 16a and the other end of the square hole 18a of the rear spacer 18 partially overlap.
The length and pitch of 6a and 18a are set. Further, the front nozzle plate 15 and the rear nozzle plate 17 have a large number of narrow grooves 15a, 17a cut out in the upper edge of the elongated thin sheet metal, and a large number of wide grooves 15b, 17b cut out in the lower edge, respectively. Above spacer 1
4, 16, 18 bolt holes 14b, 16b, 18
It is made by drilling bolt holes 15c and 17c communicating with b. However, the narrow groove 15a on the upper edge of the front nozzle plate 15 and the narrow groove 17 on the rear nozzle plate 17
a are arranged in a staggered manner (see Figure 2),
The depth is such that the bottom of the groove is spacer 14, 16, 18
The square holes 14a, 16a, and 18a are set to overlap with each other and communicate with each other. Further, the wide groove 15b at the lower edge of the front nozzle plate 15 and the wide groove 17b at the lower edge of the rear nozzle plate 17 have groove bottoms at the upper ends of the square holes 14 of the spacers 14, 16, 18.
a, 16a, and 18a to a depth that overlaps and communicates with each other (see FIGS. 3 and 4).
Then, the above-mentioned front presser plate 12 and front spacer 1
4. The front nozzle plate 15, the intermediate spacer 16, the rear nozzle plate 17, the rear spacer 18, and the rear presser plate 13 are stacked in order and are integrated with bolts 19 to form a crater 11, which The nozzle plate 1 is clamped and fixed between the upper parts of the upper bodies 2, 2 of the
The narrow grooves 15a and 17a on the upper edges of 5 and 17 serve as the nozzle holes, the wide grooves 17a and 17b on the lower edges serve as the mixed gas supply path, and the rectangular holes 14a, 16a and 18a of the spacers 14, 16 and 18 serve as the nozzle holes. A pressure chamber is formed respectively.

In the above structure, the mixed gas supplied to the first pressure chamber 4 of the lower body 3 passes through the first nozzle hole 3b of the upper surface plate 3a, enters the second pressure chamber 5 between the upper bodies 2, 2, and then enters the second pressure chamber 5 between the upper bodies 2, 2. The mixed gas supply path formed by the wide grooves 15b, 17b on the lower edges of the nozzle plates 15, 17 and the rectangular hole 14 of the spacers 14, 16, 18
The narrow grooves 15a, 17 on the upper edges of the nozzle plates 15, 17 pass through the pressure chambers formed by a, 16a, 18a.
ejected into the combustion chamber 10 from the nozzle hole formed by a,
A gas 20 (see FIG. 1) is formed above the combustion chamber 10.

(Effects of the invention) This invention consists of stacking and integrating three or more spacers and two or more nozzle plates, which are elongated thin sheet metal parallel to the longitudinal direction of the burner between the two front and rear holding plates. Because it was a crater,
The time required for drilling holes and cutting grooves is shortened, and assembly is extremely simple. All these operations can be completed in a few minutes, less than 1/10th the time required by conventional methods. Two or more rows of nozzle holes on the upper surface of the crater, two or more rows of mixed gas supply channels on the lower surface, and three or more rows of pressure holes between the nozzle holes and the mixed gas supply channels to communicate with each other. Because the chambers are formed individually, the height and width of the gas are more uniform compared to a case where two or more long slit-shaped nozzles are formed along the length of the upper surface of the crater, making it suitable for burning fabrics. It is also suitable for heat treatments such as tentering and baking.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view of the crater according to the embodiment of this invention, Figure 2 is a plan view of the crater in its assembled state, and Figure 3 is an exploded perspective view of the crater of the embodiment of this invention.
The figures are a cross-sectional view taken along the line -- in FIG. 2, FIG. 4 is a cross-sectional view taken along the line -- in FIG. 2, and FIG. 5 is a cross-sectional view of the burner. 1... Gas burner, 10... Combustion chamber, 11...
Crater, 12, 13...Press plate, 14, 16, 18
...Spacer, 14a, 16a, 18a... Square hole, 15, 17... Nozzle plate, 15a, 17a...
...Narrow groove, 15b, 17b...Wide groove, 20...
Gas =.

Claims (1)

[Scope of utility model registration request] In a gas burner that has a long crater in one direction, a long and narrow combustion chamber is formed above the crater along the crater, and a mixed gas is supplied from below the crater. Between the parallel long front and rear presser plates, there are three or more spacers in which a large number of rectangular holes are drilled at predetermined intervals in a long thin sheet metal parallel to the spacers, and a large number of thin metal plates are formed on the upper edge of the long thin sheet metal parallel to the spacers. It is formed by alternately stacking two or more nozzle plates each having a wide groove and a number of wide grooves formed at predetermined intervals on the lower edge, one by one, and the narrow groove on the upper edge of the nozzle plate Both front and rear surfaces except for the groove bottom are closed with the upper edge of the spacer to form a nozzle hole, and the wide groove at the lower edge of this nozzle plate is closed with the lower edge of the spacer on both front and rear surfaces except for the groove bottom. ,
The bottoms of the grooves communicate with each other through the square holes of the spacer to form a mixed gas supply path, and the square holes of the spacer communicate with each other through the bottoms of the narrow and wide grooves of the nozzle plate to prevent pressure. A gas burner characterized by forming a chamber.