JPH0356736Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a damper device in an instantaneous water heater or other combustor equipped with a gas burner.

(Prior art) It is known that a damper is provided at the inlet of a gas mixing pipe of a burner provided in the burner body to adjust the amount of air sucked from the inlet of the gas mixing pipe. Some devices are also known that are detachably attached to accommodate various needs.

(Problems to be solved by the invention) However, as shown in Fig. 8, the conventional damper a
A plurality of burners b are assembled together to form a burner unit, which is provided in the combustion cylinder c. The frame d is fastened with screws or the like to the lower surface of the frame d, and is provided between the burners b and the nozzle e. Therefore, in order to remove the damper a, it is necessary to disassemble the combustion cylinder c and then remove it together with the frame d from the combustion cylinder c, making it troublesome to replace the damper a.

The purpose of the present invention is to obtain a device that eliminates such problems.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a gas burner and a gas nozzle facing the mixing pipe inlet of the gas burner in the combustion shell, and also injects an amount of suction air into the mixing pipe inlet. In the case where a regulating damper member is provided, a guide member is provided between the mixing pipe inlet and the gas nozzle to support the damper member so as to be freely inserted and removed, and the gas nozzle is supported on one side wall surface of the combustion barrel. A first through hole is provided for inserting and removing the gas nozzle holder, and a second through hole for inserting and removing the damper member is provided adjacent to the first through hole, and the second through hole is connected to the first through hole. Second
The through hole is closed with a flange provided at the end of the gas nozzle holder.

(Function) To explain the function of the present invention, when it is necessary to change the gas type, the gas nozzle holder is removed from the combustion barrel, the damper member is pulled out from the second through hole, and an appropriate damper member is attached to the guide member. Insert.

In this way, the primary air can be easily adjusted. Next, by inserting the gas nozzle holder into the first through hole and tightening the flange to the combustion cylinder with screws or the like, the first through hole and the second through hole are closed.

(Example) An example of implementing the present invention will be explained with reference to the attached drawings.

In the drawings, 1 indicates a combustor main body, and within the main body 1,
A combustion shell 9 is provided, and a gas burner 2 is installed in the combustion shell 9.
and a gas nozzle 4 facing the inlet 3a of the mixing tube 3 of the gas burner 2, and a damper member 5 for regulating the amount of air sucked into the mixing tube inlet 3a.

The configuration up to now is not particularly different from what is conventionally known.

In such a case, the present invention provides the mixing pipe inlet 3.
A guide member 6 is provided between a and the gas nozzle 4,
A damper member 5 is provided on the guide member 6 so as to be freely inserted and removed, and the gas nozzle 4 is provided on one side wall surface of the combustion barrel 9.
A first through hole 13 is provided for inserting and removing the gas nozzle holder 12 that supports the gas nozzle holder 12, and the damper member 5 is inserted into and removed from the guide member 6 from outside the combustion cylinder 9 in close proximity to the first through hole 13. A second through hole 7 is provided for
The first through hole 13 and the second through hole 7 are closed by a flange 14 provided at the end of the gas nozzle holder 12, and the case where it is applied to the instantaneous water heater shown in the figure will be described in more detail. Then, a plurality of gas burners 2 were provided in parallel to each other in a combustion shell 9 connected to a heat exchanger 8. To explain this further,
These gas burners 2 include a flame stabilizing plate 10 that is fixed to the combustion shell 9 side and supports the vicinity of the upper end of the gas burner 2, and a support plate 11 that is detachably attached to the combustion shell 9 with screws or the like and supports the lower surface of the gas burner 2. Each nozzle 4 facing the gas mixing inlet 3a of each gas burner 2 is attached to a nozzle holder 12 along the arrangement direction of each gas burner 2, and the nozzle holder 12 is installed therein. The flange portion 14 is tightened and fixed to the combustion barrel 9 with screws. 1
5 is a through hole 1 facing the lower side of the nozzle holder 12
The rectifying plate/nozzle holder guide is made of punched metal and includes a large number of holes 5a, and 16 further indicates a fan provided on the lower surface thereof.

The support plate 11 is provided with air ports 11a and 11b for dividing the combustion air supplied by the fan 16 into primary air and secondary air. The guide member 6 is fixed to the lower surface of the support plate 11 with screws 17, and the guide member 6 is a metal plate having a U-shaped cross section and having through holes 18 facing each mixing pipe inlet 3a. 6a and a metal plate 6b having a through hole 19 corresponding to the through hole 18, and an insertion groove 6c for inserting the damper member 5 thereinto.
The insertion groove 6c is communicated with the first through hole 7, and the damper member 5 is inserted into the insertion groove 6 through the first through hole 7.
It was designed to be removably attached to C. In the illustrated example, both the through holes 7 and 13 are formed into one common hole.
In the illustrated example, the through hole 18 provided in the metal plate 6a is configured to have a relatively large diameter to regulate the primary air for high-calorie gas, and the guide member 6 itself has a damper function. The damper member 5, which is removably installed in the damper member 6, is constructed by drilling through holes 20 of relatively small diameter in a metal band plate to reduce the amount of air in proportion to the amount of primary air for low-calorie gas.
For example, when switching the fuel from high calorie gas to low calorie gas, the damper member 5 equipped with low calorie air holes is inserted into the guide member 6.

The illustrated damper member 5 has its end bent to provide a grip area for the tool A.

Note that when the damper member 5 and the guide member 6 are provided with a concave portion 24 on one side and a convex portion 25 on the other, and the damper member 5 is inserted into the guide member 6 by their engagement, the damper member 5 is inserted into the guide member 6 in a predetermined position. It is now fixed in position.

In the above embodiment, the through hole 18 provided in the metal plate 6a constituting the guide member 6 was used to regulate the amount of air corresponding to the high calorie gas.
For example, a damper member equipped with a through hole for primary air regulation that corresponds to high calorie gas and a damper member equipped with a through hole for primary air regulation that corresponds to low calorie gas without having the function of the guide member 6. It is also possible to prepare each of them, select one appropriately, and insert it into the guide member 6 for use. The diameters of the through holes 11a, 18, 19, and 20 are the same as those of the through holes 11a.
is the largest, followed by the through hole 19, then the through hole 18, and the through hole 20 is the smallest.

As shown in FIG.
2, but at this time, the vibration isolating rubber 23 is used to prevent vibrations from the fan from being transmitted to the combustion cylinder 9 side.

Next, replacement of the damper member of this device will be explained.

Now change the gas type from low calorie gas such as 6C to 13C.
To replace the gas nozzle 4 and damper member 5 with high-calorie gas such as
After removing the screw tightening the nozzle holder 12 and the damper member 5, and replacing the nozzle 4 with a high-calorie one, insert the nozzle holder 12 and fix the flange part 14 again with screws, etc. Just do it.

In this case, the primary air amount corresponding to the high calorie gas is supplied through the through hole 18 formed in the guide member 6, and conversely, in order to convert the gas type from high calorie gas to low calorie gas, All you have to do is loosen the screws tightening the flange part 14 and replace the gas nozzle 4 of the nozzle holder 12 with the nozzle 4 for low calorie gas, and at the same time insert the damper member 5 for low calorie gas into the guide member 6. Gas types can be easily exchanged by simply unfastening the flange portion 14 with screws and replacing the damper member 5 and the gas nozzle 4 provided with the nozzle holder 12 through the through holes 7 and 13.

In the above-described embodiment, a large number of nozzles 4 are provided in the nozzle holder 12 so that the nozzles 4 can be replaced simultaneously for a large number of gas burners 2, but this may also be done for only one gas burner 2. I can do it.

(Effect of the invention) As described above, according to the invention, a guide member that supports the damper member in a freely sliding and retractable manner is provided between the mixing pipe inlet and the gas nozzle, and the gas nozzle is attached to one side wall surface of the combustion barrel. A first through hole is provided to support the damper member so that it can be inserted and removed freely, and a second through hole is provided in close proximity to the first through hole for allowing the damper member to be inserted into and removed from the guide member from outside the combustion barrel. Therefore, when replacing the damper member due to gas type change, the replacement work can be carried out without having to do troublesome work such as disassembling the combustion cylinder as in the conventional case. Since the holes are closed with flanges provided at the ends of the gas nozzle holder, both through holes can be easily closed, and the problem of air flowing out from both through holes can be easily solved.

[Brief explanation of the drawing]

Figure 1 is a cutaway front view of one example of implementing the present invention, Figure 2
The figure is an enlarged cross-sectional view of a part of it, Figure 3 is an exploded slope view of the main part, Figure 4 is a slope view showing the state in which the damper is removed, Figure 5 is a slope view of the fan motor section, and Figure 6 is a slope view of the fan motor section. FIG. 7 is a cutaway front view showing a part of the combustion barrel, and FIG. 8 is a cutaway front view showing a conventional example. 1... Combustor body, 2... Gas burner, 5...
damper member, 6... guide member, 7... second through hole, 13... first through hole, 14... flange.

Claims (1)

[Scope of utility model registration request] In the case where a gas burner and a gas nozzle facing the mixing pipe inlet of the gas burner are provided in the combustion cylinder, and a damper member is provided at the mixing pipe inlet to regulate the amount of suction air, there is a gap between the mixing pipe inlet and the gas nozzle. a guide member for supporting the damper member in a freely insertable and withdrawable manner; and a first through hole for inserting and extracting a gas nozzle holder that supports the gas nozzle on one side wall surface of the combustion cylinder; A second through hole for inserting and removing the damper member is provided adjacent to the through hole of the first through hole.
A damper device for a combustor, comprising a through hole and a second through hole closed by a flange provided at an end of a gas nozzle holder.