JP3030094U - Small blast combustion burner for crafts - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: It is possible to surely obtain a good flame without yellow chips, lifts, incomplete combustion and the like by opening one gas cock, and it is easy to adjust a hard flame and work by operating only one cock. Provided is a small blast combustion burner for work, which is excellent in workability and operability. SOLUTION: A nozzle is attached instead of the cock on the air side which is provided in a conventional blast combustion burner for craftsmanship, so that the amount of air can be adjusted to a constant amount and a flame can be formed only by adjusting the amount of gas. In addition to this, a nozzle is also provided on the gas supply side so that the amount of gas does not exceed the good combustion range.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a small-sized blast combustion gas burner used for various work, for example, fine work such as engraving, dental work, and glass work.

[0002]

[Prior art]

 Conventionally, as this type of burner, a red-fire type or Bunsen type burner is used when the fuel gas is 5C. On the other hand, in the gas industry in recent years, switching to natural gas has progressed, and 13A gas is being used in many places. However, in the case of this 13A gas, the blast combustion burner must be used because the above-mentioned red fire or Bunsen burner does not have enough air to produce the flame required for work.

Therefore, a blast combustion burner as shown in FIG. 3 is currently provided as a gas burner for fine work. As shown in the figure, this burner is one in which two cocks 3 and 40 for gas and air are connected to the mixing section 12 of a cylindrical burner body 1 which is erected on the stand 2, and these two cocks 3, The gas and air supplied to the mixing section 12 via 40 are mixed in the section 12 and burned in the flame hole 13 at the tip of the burner body 1, and the operation of the two cocks 3, 40 is performed. The amount of gas and the amount of air are adjusted to form a desired flame.

As described above, in the above-mentioned conventional burner, since two cocks have to be operated to adjust both gas and air, it is difficult to adjust and a good flame cannot be formed, and the flame blows off. There is a problem that it is easy and the workability is poor. Also, since there are two cocks, it is difficult to adjust with one hand and the operability is poor. Moreover, since the cocks are located on the left and right and take up space on the work desk, and the gas and air hoses connected to these cocks extend to the left and right, it is difficult to carry it while holding it like a hand burner. .

[0005]

[Problems to be solved by the device]

 The present invention has been made in view of the above problems of the prior art, and the purpose thereof is that it can be used for 13A gas as well as 5C gas, and only one cock is used. The flame can be easily adjusted by operation, and it has good operability. Moreover, it is compact and does not occupy a lot of space, and the gas and air hoses do not interfere with the work. To provide a blast combustion burner.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, in the small blast combustion burner for work of the present invention, an air conduit that does not have an air amount adjusting means on the air supply side is provided in the mixing portion of the fuel gas and the combustion air provided in the burner body. While connecting to make the air supply rate constant, connecting a gas cock as the gas supply side enables adjustment of the gas supply rate, and at the same time the gas supply side does not exceed the good combustion range. Thus, it is equipped with a means to regulate the maximum supply.

In the blast combustion burner for fine work constructed as described above, the supply of a constant amount of air is always ensured, and by operating the gas cock to open, even if the cock is opened too much, the supplied air amount can be increased. The fuel gas is supplied in an amount that does not exceed the good combustion range.

Therefore, it is not necessary to adjust both the gas and the air using the two cocks, and a good flame can be reliably obtained only by opening one gas cock, and yellow chips, lift, incomplete combustion, etc. Of course, the phenomenon does not occur, and it is possible to continuously change from an anneal flame to a hard flame and from a hard flame to a craft flame by adjusting the gas cock only. For this reason, it can be operated easily with one hand, compared to the conventional small-sized blast combustion burner for work, which requires adjustment of both gas and air by operating two cocks. Adjustment is easy and operability and workability are greatly improved.

Further, since there is only one cock on the gas side, it becomes compact, and both hoses on the gas side and the hoses on the air side can be integrated and extended in the same direction. As a result, the hose is less obstructive to operation and work, compared to the conventional one that had two cocks and had to carry the hose in different directions. Even if it is configured in the form of a table-mounted burner to be used by placing it on a desk or the like, the hose will not extend in different directions on the desk and interfere with the work.

In the present invention, the means provided on the gas supply side for restricting the maximum supply amount so that the gas amount does not exceed the favorable combustion range is added as a member separate from the gas cock at an appropriate location of the gas supply passage. The gas cock itself is designed so that the maximum flow rate exceeds the good combustion range of the burner, as well as means such as a throttle member that throttles the amount of gas supplied and a stopper that regulates the opening of the gas cock. Shall also be included.

In the small blast combustion burner for work according to claim 2, nozzles are provided on the outlet side of each of the gas cock and the air conduit to achieve the above object, and the air supply amount is regulated to be constant by the nozzles. However, the amount of gas is regulated so as not to exceed the good combustion range.

In the small blast combustion burner for fine work constructed as described above, since the air amount and the gas amount are determined by the gas cock, the air conduit, and the nozzles provided on the outlet side of each, It is not necessary to create a special gas cock, and it is possible to use an existing commercially available gas cock. Moreover, the burner of this invention used the existing small burner for crafts, which had two cocks for gas and air connected to the mixing section, and removed the two cocks from this burner and attached the gas cock. A part with a nozzle attached to the gas outlet of the removed cock can be easily modified by replacing the air cock with the part where the air cock was attached by connecting the air nozzle and air conduit to the part. Can be manufactured, the manufacturing is simple, and the cost can be reduced.

[0013]

[Embodiment]

 An embodiment of the present invention will be described below with reference to the drawings. In the figure, the burner is indicated by reference numeral A in its entirety, and in the case of the figure, it is a burner with a base which is mainly used for tabletop use. Reference numeral 1 is a main body of the burner A, 2 is a stand for holding the burner main body 1 in an upright state on a desk or the like, and the burner main body 1 is integrally fixed on the stand 2 and stands upright. .

The burner body 1 is formed in a substantially cylindrical shape, and a burner tip 11 is attached to the tip end thereof, and the upstream side of the burner tip 11, that is, the base side, is a mixing portion 12 for fuel gas and combustion air. It has become. A gas cock 3 and an air conduit 4 are attached to the mixing section 12 of the burner body 1 and communicate with the mixing section 12 via nozzles 5 and 6, respectively.

That is, the mixing section 12 has a base 121 formed in a hexagonal cross section and provided with a flat surface convenient for mounting the gas cock 3 and the like, and the flat surface provided on the base 121 is provided at an appropriate place. Mounting holes 7 and 8 for the gas cock 3 and the air conduit 4 are opened. The gas cock 3 is attached to the gas cock attachment hole 7 at its gas outlet 31 so that the nozzle 7 is connected so as to face the inside of the mixing section 12, and the air guide attachment hole 8 is used for air. The nozzle 6 is attached, and the air guide tube 4 is connected to the nozzle 6.

In this case, a conventionally well-known child holding cock is used for the gas cock 3, and the gas outlet 31 on the parent side 3a is connected to the mixing section 12, but the gas outlet 31 on the child side 3b is connected to the gas outlet 31. An ilot conduit 32 is attached, the pilot conduit 32 extends upward along the mixing section 12, and the upper end opening is located near the upper opening of the burner body 1, that is, near the flame hole 13. The amount of gas supplied from the parent side 3a of the gas cock 3 to the mixing section 12 is regulated by the diameter of the nozzle 5 of the gas outlet 31 even when the opening of the gas cock 3 is maximized and the supply amount is maximized.

On the other hand, the air conduit 4 is made of, for example, a copper pipe or the like, and is not provided with means such as a cock for varying the amount of air. Therefore, the amount of air supplied to the mixing section 12 via the air conduit 4 is always regulated to be constant by the diameter of the air nozzle 6. The air inlet side of the air conduit 4 is guided in the direction of the gas cock 3 from the attachment portion to the mixing portion 12, and the gas inlet is parallel to the cock 3 so as not to disturb the operation portion 33 near the gas cock 3. It is bent so as to extend in the direction, and the air hose 41 connected to the air inlet can be combined with the gas hose 34 connected to the gas inlet of the gas cock 3.

The nozzle 5 on the side of the gas cock 3 and the nozzle 6 for air do not exceed the capacity of the burner tip 11 in the amount of gas and air supplied into the mixing section 12 via these nozzles 5, 6. Moreover, the diameters of the nozzles 5 and 6 are determined so that the amount of gas and the amount of air that can obtain a good flame required for fine work such as engraving, dental work, and glass work are determined. The nozzle 5 is aligned so that the gas amount does not exceed the good combustion range even if the gas cock 3 is opened too much for the air regulated to a constant amount by the air side nozzle 6.

A preferred combination example of the diameters of the gas side nozzle 5 and the air side nozzle 6 is as follows. For burners used for work requiring hard flame: For gas nozzle diameter 0.7 φ, air nozzle diameter 1.0 φ 〃 0.8 φ 〃 1.0 or 1.1 φ 〃 0.9 φ 〃 1.1 φ 〃 1.1 φ 〃 1.1 or 1.2 φ 〃 1.2 φ 〃 1.2 φ For burners used for work requiring flames: For gas nozzle diameter 0.7 φ, for air nozzle diameter 1.2 or 1.3 φ 〃 0.8 φ 〃 1.3 or 1.4 φ 〃 0.9 φ 〃 1.4 or 1.5 φ

Since the amount of gas with respect to the amount of air is large in hard flames and small in crafted flames, if the air amount is kept constant as described above, the diameter of the nozzle 5 on the gas side will be the amount of gas for hard flames. It is possible to deal with crafted flames by narrowing down the gas cock 3 by deciding in accordance with.

The burner A is a gas hose 34 that communicates with the gas supply source at the gas inlet of the gas cock 3, and the air conduit 4 is an air hose 41 that communicates with a compulsory air supply source such as an air pump or a compressor. The gas hose 34 and the air hose 41 are bundled together as one, though they are used by connecting them to each other, put them on a desk, and, depending on the work contents, hold them in a hand like a hand burner.

The gas burner A may of course be newly manufactured, but it has a small stand for existing work in which two cocks 3 and 40 for gas and air are connected to the base 121 of the mixing section 12. It can be easily obtained by modifying the burner. That is, after removing the two cocks 3 and 40 of the existing burner, the nozzle 5 is attached to the gas outlet 31 of the removed gas cock 3, and the gas cock 3 is attached to the portion where the gas cock 3 of the burner A is attached. In addition to reattaching, the air cock 40 can be replaced by the air nozzle 6 at the portion where the air cock 40 is removed, and the air conduit 4 can be connected to the nozzle 6 for assembly.

Although the embodiment described above is for a table with a table, it is of course optional to use a hand burner which is mainly used for holding in a hand. In addition, in the case of the one that does not require a pilot fire in use, it goes without saying that the gas cock 3 can either use a blind lid to close the gas outlet on the child side or use an ordinary cock without the child cock 3b. Nor.

Further, in the above embodiment, the nozzle 5 is attached to the outlet 31 side of the gas cock 3 so that the supply gas amount does not exceed the good combustion range. Instead of the nozzle 5 of FIG. 1, a throttle member is provided at an appropriate position of the gas supply path from the gas supply source to the gas cock 3 so that the gas amount is regulated so as not to exceed the good combustion range, or the gas cock is prevented. It is also possible to provide a stopper or the like on the operation portion 33 of 3 to restrict the opening of the gas cock 3 so that the gas amount does not exceed the good combustion range. It is possible to replace the nozzle by designing it so that it can pass only the amount of gas that does not exceed the good combustion range.

[Brief description of drawings]

FIG. 1 is a plan view of a small blast combustion burner for work, showing an example of an embodiment of the present invention, with a part cut away.

FIG. 2 is a perspective view with a part cut away.

FIG. 3 is a plan view showing a conventional small blast combustion burner for work.

[Explanation of symbols]

1: Burner body 12: Mixing part 3: Gas cock 4: Air conduit 5: Gas side nozzle (means for controlling the maximum supply amount so that the gas amount does not exceed the good combustion range) 6: Air side nozzle

Claims (2)

[Scope of utility model registration request] 1. An air conduit having no air quantity adjusting means as an air supply side is connected to a mixing portion of a fuel gas and combustion air provided in a burner body to make the air supply quantity constant, while supplying gas. A gas cock is connected as a side to enable adjustment of the gas supply amount, and the gas supply side is provided with means for regulating the maximum supply amount so that the gas amount does not exceed the good combustion range. Small blast combustion burner. 2. A nozzle is provided on each of the outlet sides of the gas cock and the air conduit, and the supply air amount is regulated by these nozzles so that the gas amount does not exceed a good combustion range. A small-sized blast combustion burner for work according to claim 1.