JPS6238111Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a fixed structure for a mixing tube for a gas burner, and more specifically, to a fixed structure of a mixing tube for a gas burner. This relates to a structure that is fixed in such a way that it can be fixed.

[Background Art] Generally, a mixing tube for a gas burner is fixed to a base with a nozzle inserted into its base, but the mixing tube can be attached to and removed from the base so that the nozzle can be cleaned from clogging. It is necessary to do so. For this reason, the conventional method has been to fix the mixing tube to the base with screws, but this poses a problem in that it takes time and effort to attach and detach the mixing tube.

[Purpose of the invention] The present invention was made in view of the above points, and its main purpose is to make it easier to attach and detach the mixing tube and to make it easier to clean the nozzle. be.

[Disclosure of the invention] Examples of the invention will be described below based on the drawings. The fixing structure of a mixing tube for a gas burner according to the present invention is such that a mixing tube 3 is fixed to a base 2 on which a nozzle 1 for discharging combustion gas is protruded, with the nozzle 1 being inserted into the base of the base 2. A substantially rectangular flange plate 4 is provided at the opening edge of the base of the mixing tube 3, and a pinching tongue piece 5 having a left and right width extends from the flange plate 4 at the front edge of the flange plate 4. A pair of mounting pieces 7 are provided at the front and rear of the nozzle 1, facing each other, protruding in the same direction as the nozzle 1, and each having an elongated hole 6 formed in the left-right direction, and the tongue piece 5 has an opening at its front edge. A notch groove 8 is formed, and the flange plate 4
When the rear end portion and the tongue piece 5 are respectively inserted into the long holes 6 of the corresponding mounting piece 7, the locking springs 9 having left and right elasticity engage with the notch groove 8, and the flange plate A mounting piece 7 is installed between the front edge of 4 and the locking spring 9.
The flange plate 4 is fixed to the base 2 in such a manner that it is sandwiched therebetween.

As shown in FIGS. 1 and 2, a nozzle 1 is fixed to a base 2 fixed in a fixed position. Nozzle 1
is a cylindrical body whose inner periphery gradually decreases in diameter from the lower part upward in FIG. A diameter portion 11 is formed. Further, a stepped portion 12 is formed on the inner periphery of the nozzle 1 above the large diameter portion 11 . A gas supply pipe 13 is inserted into the lower part of the nozzle 1 . An outer flange portion 14 is formed on the gas supply pipe 13 slightly below the upper end. However, if the gas supply pipe 13 is inserted into the nozzle 1 with the ring-shaped gasket 15 inserted into the large diameter part 11 of the nozzle 1, the tip of the gas supply pipe 13 will be connected to the stepped part 12 on the inner peripheral surface of the nozzle 1. At the same time, a gasket 15 is held between the large diameter portion 11 of the nozzle 1 and the outer flange portion 14 of the gas supply pipe 13.
The nozzle 1 and the gas supply pipe 13 are hermetically coupled. To fix this nozzle 1 to the base 2, attach the outer flange 14 of the gas supply pipe 13 to the surface of the base 2.
At the same time, the flange portion 10 of the nozzle 1
may be secured to a mounting base 16 fixed to the base 2. The mounting base 16 has a thin box shape that opens upward in FIG. Through hole 1 passing through 16 vertically
8 was formed. Therefore, recess 1
By fitting the flange part 10 into the recess 17 and inserting the tip of the nozzle 1 into the through hole 18, the flange part 10 is locked to the bottom surface of the recess 17, and in this state, the mounting base 1
6 is fixed to the base 2 with screws 19, the flange portion 10 is sandwiched between the mount 16 and the base 2, and the gas supply pipe 13 is connected to the nozzle 1. The nozzle 1 is fixed to the base 2.

Combustion gas discharged from the tip of the nozzle 1 enters a mixing tube 3 and is mixed with air, and a flange plate 4 is caulked and fixed to the lower end of the mixing tube 3. As shown in FIG. 2, the flange plate 4 has a substantially rectangular shape, and has a tongue piece 5 extending from its front edge and an insertion piece 20 extending from its rear edge.
The tongue piece 5 and the insertion piece 20 are arranged so that the left and right widths are closer to each other than the flange plate 4. A notch groove 8 is formed in the tongue piece 5 and opens at the front edge. Claw pieces 21 projecting inward are provided on the left and right opening edges of the cutout groove 8, respectively. Incidentally, a mounting piece 7 stands up from both the front and rear edges of the mounting base 16, and a long hole 6 that is long in the left and right directions is formed in the left and right center portions of the mounting piece 7. The long hole 6 is formed so as to straddle between the mounting piece 7 and the bottom surface of the mounting base 16, and the horizontal width of the long hole 6 is equal to the width of the flange plate 4.
The horizontal width of the tongue piece 5 and the insertion piece 20 are approximately equal to each other. Furthermore, the distance between the rear edge of the flange plate 4, that is, the front end of the insertion piece 20 and the front edge of the tongue piece 5,
The distance between both elongated holes 6, that is, the distance between both mounting pieces 7 is set to be approximately equal, or the former is set to be slightly shorter. However, by inserting the insertion piece 20 of the flange plate 4 into one of the elongated holes 6, the flange plate 4 can be placed between both mounting pieces 7, and if the flange plate 4 is slid forward in this state, , the tongue piece 5 is inserted into the other elongated hole 6. In this way, the front edge of the flange plate 4 is locked to the rear surface of the mounting plate 7, and the cutout groove 8 provided in the tongue piece 5 is positioned forward of the mounting plate 7. Here, the locking spring 9 is formed in a U-shape that opens downward and has locking legs 22 extending outward from both open ends of the locking spring 9, as shown in FIGS. 3 and 4. When engaged with the notch groove 8, the locking spring 9 and the flange plate 4
The flange plate 4 is fixed to the mounting base 16 with the mounting piece 7 being held between the front edge of the flange plate 4 and the front edge of the flange plate 4. In this state, the flange plate 4 does not move in the front-back direction, but is also prevented from moving in the vertical and horizontal directions by the engagement of the elongated hole 6 with the tongue piece 5 and the insertion piece 20. be. To remove the flange plate 4 from the mounting base 16, compress the locking spring 9 by applying force from the left and right sides, and remove it from the notch groove 8. The flange plate 4 can now be moved back and forth. If you slide the tongue piece 5 into the elongated hole 6
This allows the flange plate 4 to be removed from the mounting base 16.

[Effects of the invention] Since the present invention has the above-described configuration, the flange plate, that is, the mixing pipe can be fixed to the base by simply attaching and detaching the locking spring to the notch groove. It can be removed from the base, making it easy to attach and detach the mixing tube. As a result, there is an advantage that it becomes easy to clean dirt at the base of the mixing tube due to boiling over and clogging of the nozzle.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, FIG. 2 is a partially exploded perspective view of the same, FIG. 3 is a partial front view of the same, and FIG. 4 is a partial plan view of the same. 1 is a nozzle, 2 is a base, 3 is a mixing tube, 4 is a flange plate, 5 is a tongue piece, 6 is a long hole, 7 is a mounting piece, 8 is a notch groove, and 9 is a locking spring.

Claims (1)

[Scope of utility model registration request] The mixing tube is fixed to a base from which a nozzle for discharging combustion gas projects, with the nozzle being inserted into the base, and a substantially rectangular flange plate is provided at the opening edge of the mixing tube base. At the same time, the front edge of the flange plate is extended with a tongue piece narrower in left and right width than the flange plate, and the base has elongated holes that are long in the left and right direction and protrude in the same direction as the nozzle, facing each other at the front and rear of the nozzle. A pair of mounting pieces are provided, each of which has a notched groove opening at its front edge, and the rear end of the flange plate and each of the tongues are inserted into the corresponding elongated hole of the mounting piece. In this state, elastic locking springs on the left and right sides engage with the notched grooves, and the flange plate is attached to the base with the mounting piece held between the front edge of the flange plate and the locking springs. Fixed structure of gas burner mixing tube.