JPH0754173B2 - Nozzle device for burners for gas appliances - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustible air-fuel mixture in which a gas supply pipe is installed at the bottom of a hollow mixing pipe provided with a burner at the upper part, and the gas is ejected from a nozzle provided at the end of the pipe. The present invention relates to a nozzle device for a burner for a gas appliance for making a gas.

[0002]

2. Description of the Related Art A nozzle device of this type has heretofore been formed by connecting a separately manufactured nozzle to the tip of a gas supply pipe.
Has a structure as disclosed in No.

Therefore, although it is relatively simple, it has the following problems. For example, a. Nozzle parts must be manufactured separately. B. It is necessary to braze to connect the nozzle part and the gas supply pipe. C. Since the nozzle part is fixed to the gas appliance, a mounting bracket such as a nozzle band is required, and workability is poor. D. There is a problem that the pipe, the nozzle, etc. are exposed at the bottom of the gas appliance, hindering the handling, and the packaging material is caught during packaging.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is not necessary to separately manufacture a nozzle. Therefore, steps such as brazing and mounting on a gas appliance are not required. It is possible to omit it and to facilitate the formation and positioning of the nozzle.

It is also an object of the present invention to eliminate the nozzle and other related structures from the bottom of the gas appliance.

[0006]

In order to solve the above problems, the present invention is a nozzle device for a burner for gas appliances, in which a flat closing portion 2 is formed at an end of a pipe 1 for supplying gas, and A means for forming a nozzle hole 3 for ejecting gas in the central axis direction of the mixing tube is provided in the pipe 1 immediately before the closed portion 2.

The pipe 1 is made of copper or other metal suitable for supplying gas and having good workability, and the closed end 2 is formed by plastically deforming the pipe end, that is, flattening it. The nozzle hole 3 is formed by making a small hole in the surface of the pipe immediately before. Therefore, it is not necessary to separately manufacture the nozzle component, and a brazing process for the pipe is also required.

A plate portion 5 for fixing the closed portion 2 of the pipe 1 in parallel with the plate surface 5 is provided on the plate surface 5 at the lower portion of the gas appliance for erected the mixing pipe 6. Further, the end portion of the pipe 1 is simply and accurately fixed by passing the stopper 11 through the small hole 10 penetrating the closing portion 2. The pipe 1 is a mixing pipe 6
When it is introduced into the inside, it passes through the through hole 8 and the outer surface is pressed by the side 7, so that the directionality and position of the nozzle are accurately determined.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A description will be given below with reference to the drawings. The embodiment relates to a gas stove A using a detachable gas cylinder (cartridge) C, and gas is sent to a burner B by a supply pipe 1 via a governor G to which the gas cylinder C is attached.

The supply pipe 1 has one end communicating with the governor G through a connection port 12 and the other end extending below a mixing pipe 6 provided with the burner B. This pipe is made of copper or its alloy, and the other end is completely closed by a closing part 2. The closing part 2 is plastically deformed into a flat plate shape so as to be accurately attached to the plate surface 5 such as the bottom plate of the gas stove A, which fixes the other end of the pipe 1, and the middle point in the thickness direction is For example, the pipe 1 is formed so as to substantially coincide with the axis of the pipe 1 (see FIG. 4).

The nozzle hole 3 is a closed portion 2 at the end of the pipe.
Immediately before, it is formed in a direction orthogonal to the pipe axial direction.
Furthermore, in order to make the nozzle hole 3 accurately,
The plane on which is provided is a flat reference plane 4 parallel to the closed portion 2.
And perforations are made in a direction orthogonal to the surface 4. The nozzle hole 3 is formed in a cross-sectional shape so that the required jet flow can be obtained with caution, as in the case where the nozzle component is manufactured separately.

In order to properly fix the closed portion 2 of the pipe 1 to the plate surface 5, a table portion 9 for mounting the closed portion 2 on the plate surface 5 in the mixing pipe 6 is provided. The base portion 9 in the embodiment is molded so that its upper surface is raised more than other portions of the plate surface 5, and its height is, for example, when the pipe 1 is placed on the plate surface 5. It is good that the lower surface of the closing portion 2 is just supported (see FIG. 4).

Since the lower part of the base 9 is lifted as a result of the raised structure of the base part 9, when the stopper 11 such as a tapping screw is screwed into the small hole 10 formed in the closed part 2, the tip end comes out from the bottom of the gas appliance. It will not protrude. Note that washers may be interposed as the base 9 instead of the raised structure.

Further, in order to prevent the nozzle 1 from being lifted up from the plate surface 5 and the nozzle hole 3 being inclined, a notch-shaped passage is formed at the lower end of the mixing pipe 6 for introducing the pipe 1 into the mixing pipe 6. The upper side 7 of the hole 8 holds down the pipe 1.

In each drawing, 13 and 14 are fixing pieces of the mixing tube 6,
Reference numeral 15 is a crater of burner B, 16 is an air inlet opening at both sides of a lower portion of the mixing tube 6, 17 is Gotoku, 18 is a tool stopper pick,
Reference numeral 19 is a flange portion provided near the connection port 12 at one end of the pipe, and is prevented from coming off by the locking member 20 when connecting to the governor G.

In the thus constructed nozzle device according to the present invention, when the instrument stopper pick 18 is operated, gas flows from the governor G through the supply pipe 1 and the nozzle hole 3 through the mixing pipe 6.
It is jetted out in the direction of the central axis of, and is mixed with the air introduced from the air introduction port 16 and flows out to the crater 15. then,
Combustion is also affected by the position and accuracy of the nozzle holes 3,
According to the present invention, the closed portion 2 is formed at the tip of the pipe, and the closed portion 2 can be used for positioning, so that the accuracy is sufficient.

[0017]

Since the present invention is constructed and operates as described above, the nozzle hole 3 can be formed by directly boring the pipe 1 for supplying the gas to the mixing pipe 6, and therefore the nozzle is separately manufactured. Because you don't have to
Processes such as brazing and mounting on gas appliances can be omitted,
Product cost can be significantly reduced. Moreover, by utilizing the flattening of the closed portion 2 at the tip of the pipe 1, the nozzle hole 3
Since it is possible to perform the positioning and the accuracy of the gas ejection direction, stable combustion is realized without causing problems such as the occurrence of red fire and flame imbalance. Furthermore, pipe 1
Is laid on the plate surface 5 and the member does not project to the bottom surface of the gas appliance, so that it will not be caught during assembly or packing.

[Brief description of drawings]

FIG. 1 is an exploded perspective view.

FIG. 2A is a sectional view of a pipe. (B) Sectional drawing of a nozzle hole part. (C) Sectional drawing of a block part.

FIG. 3 is a cross-sectional view of a mixing tube.

FIG. 4 is a vertical cross-sectional view of a nozzle device.

FIG. 5 is a perspective view of a gas appliance.

Claims (6)

[Claims] 1. A gas appliance for producing a combustible air-fuel mixture by installing a pipe for supplying gas in the lower part of a hollow mixing pipe provided with a burner in the upper part and ejecting the gas from a nozzle provided at the end of this pipe. In a burner nozzle device, a flat closed portion 2 is formed at an end of the pipe 1, and a nozzle hole 3 for ejecting gas in the central axis direction of the mixing pipe is formed in the pipe 1 immediately before the closed portion 2. A nozzle device for a burner for a gas appliance, which is characterized in that 2. The nozzle device for a burner for a gas appliance according to claim 1, wherein the pipe 1 is made of copper or a metal pipe having the same effect, and the closed portion 2 is formed by plastic deformation of the end portion of the pipe. 3. The pipe 1 has a substantially flat reference surface 4 formed in parallel with the closed portion 2, and the reference surface 4 is provided with a nozzle hole 3 in a direction orthogonal thereto. 1
Nozzle device for a burner for a gas appliance according to the item. 4. A mixing pipe 6 is erected on the lower plate surface 5 of the gas appliance, and the closed portion 2 of the pipe 1 is fixed in parallel with the plate surface 5 in the mixing pipe 6, and the pipe 1 A through hole 8 having a side 7 capable of contacting the outer surface is formed in the mixing tube 6;
By the fixing of the closing portion 2 and the contact of the outer surface of the pipe,
The nozzle device for a burner for gas appliances according to claim 1, wherein the nozzle hole 3 has a configuration in which the directionality of the nozzle hole 3 is maintained. 5. The closing part 2 is fixed while maintaining parallelism with the plate surface 5 in a state of being mounted on a base part 9 provided on the plate surface in the mixing tube 6. Nozzle device for burner for gas appliances. 6. The gas appliance according to claim 1, wherein the flat closing portion 2 is fixed to the lower plate surface 5 of the gas appliance by a stopper 11 which is inserted into a small hole 10 which penetrates in the flat direction. Burner nozzle device.