JPH0344983Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a burner structure for a pressure spray combustion device, and more specifically to a burner structure in which the spray direction can be adjusted as appropriate.

(Prior Art) FIG. 2a is a schematic diagram of a pressure spray combustion apparatus, in which 21 is the apparatus main body, 22 is a combustion chamber installed in the apparatus main body 21, and 23 is the combustion chamber 22. A heat exchanger 24 is arranged in the upper part, a total of three draft tubes are arranged at intervals in the vertical direction on the inner surface of the combustion chamber 22, and 25 is a sprayed fuel swirl arranged in each draft tube 24. 26 is a stabilizer for each of the above-mentioned stabilizers 25;
27 is a blower that supplies combustion air to each burner 26 through a ventilation casing 28; 29 is a blower that supplies fuel pumped from a fuel supply pump (not shown) to the burner 2;
6 is a supply pipe, 30 is a water supply port, 31 is a hot water supply port, and 32 is an exhaust pipe.

As shown in FIG. 2b, the burner 26 has one end connected to the supply pipe 29 and a holder 33 fixed to the casing 28, one end screwed onto the holder 33, and the other end connected to the supply pipe 29. A nozzle adapter 35 with a nozzle 34 for fuel spraying connected to the part.
It is composed of. Further, the holder 34
has a built-in solenoid valve for spray control.

(Problems to be Solved by the Invention) This type of burner structure has a problem in that the spray pattern of the fuel sprayed from the fuel spray nozzle 34 tends to be uneven. This misalignment of spray can occur regardless of machining accuracy, etc., and it is difficult to correct this misalignment even with the stabilizer 24. As a result, as shown by the imaginary line in FIG. If the flame deviates greatly from the axis of the burner 26 and comes into contact with the heat exchanger 23 or the inner surface of the combustion chamber 22, causing incomplete combustion, or if there are multiple burners in the combustion chamber, the flames may come into contact with each other and cause incomplete combustion. There is a problem that the heat exchanger 23 or the inner surface of the combustion chamber 22 may be elongated and come into contact with the inner surface of the heat exchanger 23 or the combustion chamber 22, causing incomplete combustion, or smoke may be generated, resulting in a decrease in heat exchange efficiency.

However, the conventional burner 26
3. Since the nozzle adapter 35 and the nozzle 34 are connected together, it is necessary to replace the nozzle 35 with another one in order to correct the bias in the fuel spray mentioned above, which reduces the cost of parts. There were problems in that it was expensive and the work was time-consuming.

The present invention was developed in view of the above-mentioned problems, and its purpose is to provide a burner structure for a pressure spray combustion device that allows for easy correction of uneven fuel spray without the need to replace the nozzle. do.

(Means for Solving the Problems) In order to solve the above problems, the present invention includes a holder connected to a fuel supply pipe and fixed to a casing, and a nozzle adapter equipped with a fuel spray nozzle at one end. are rotatably connected to each other via an elastic ring, and a support member that presses the nozzle adapter toward the holder is fixed to the casing.

(Function) According to the present invention, by fixing the support member to the casing, the support member presses the nozzle adapter in the direction of the holder, and the elastic rings are pressed between their opposing surfaces to connect the nozzle adapter and the holder. can be connected watertight. Furthermore, since the holder and the nozzle adapter are rotatably connected, the nozzle adapter can be rotated as appropriate about the axis in the assembled state.

(Embodiment) Figures 1a and 1b show an embodiment of the present invention, in which Figure 1a is a sectional view of a burner structure, and Figure 1b is an exploded perspective view of the burner structure.

In the figure, 1 has a fuel supply pipe 2 at one end.
The holder 1 is connected to the casing 3 of the combustor body and is fixed to the casing 3 of the combustor body, and the holder 1 has a built-in solenoid valve (not shown) for spray control inside.
Further, the holder 1 has a fuel supply passage 4 therein, and a cylindrical fitting part 5 at the other end.

Reference numeral 6 designates a nozzle adapter having a circular fitting hole 7 at one end into which the fitting portion 5 can be rotatably fitted, and a nozzle 8 for fuel spraying connected to the other end. Further, the nozzle adapter 6 has an annular engagement groove 9 at an intermediate position on its outer surface.

Reference numeral 10 denotes an annular elastic ring made of an elastic material such as synthetic rubber and arranged around the outer periphery of the fitting portion 5.

Reference numeral 11 denotes a notch portion 12 that can be fitted into the engagement groove 9.
and two L-shaped leg plates 14 protruding from both ends of the engagement plate 13 in the same direction.
It is a support member consisting of. This support member 11 has screw insertion holes 15 in each of the leg plates 14, and screws 16 inserted into the screw insertion holes 15 can be tightened into mounting holes 17 formed on both sides of the holder 1. is fixed to the casing 3.

Next, an assembly example of the burner structure will be described.

First, the elastic ring 10 is attached to the fitting part 5 of the holder 1.
and the fitting hole 7 of the nozzle adapter 6 is fitted into the fitting part 5. Next, this nozzle adapter 6
Insert the notch 12 of the support member 11 into the engagement groove 9 from the side, and in this state connect the screw insertion port 15 and the mounting hole 1.
7, insert the screw 16 into the screw insertion opening 15, and tighten it into the mounting hole 17. screw 16
By tightening the nozzle adapter 6 into the mounting hole 17, the nozzle adapter 6 is pressed in the direction of the holder 1, and the elastic ring 10 is pressed between the opposing surfaces of the holder 1 and the nozzle adapter 6 and deforms.

As described above, according to this embodiment, by fixing the support member 11 to the casing 3, the nozzle adapter 6 is pressed in the direction of the holder 1, and the elastic rings 10 are clamped between the opposing surfaces of the nozzle adapters. 6 and the holder 1 can be connected watertightly without causing leakage of supplied fuel. In addition, since the nozzle adapter 6 can be rotated around the axis against some resistance in the assembled state, the fuel spray from the fuel spray nozzle 8 is biased, and the combustion flame is not generated during combustion. Even if the combustion flame is deviated from the axis of the burner, it is possible to prevent the combustion flame from contacting the heat exchanger or the inside of the combustion chamber by appropriately rotating the nozzle adapter 6 and correcting the misalignment in the appropriate direction.

FIG. 3 is an exploded perspective view of a burner structure showing another embodiment of the present invention.

This embodiment has the following points: instead of the engagement groove 9, a step 17 facing toward the nozzle 8 is formed on the outer surface of the nozzle adapter 6a, and the engagement plate 13a of the support member 11a has an upper part formed from the step 17 of the nozzle adapter 6a. This embodiment differs from the previous embodiment in that a hole 12a is provided that allows passage and can be engaged with the stepped portion 17.

In this burner structure, an elastic ring 10 is externally fitted to a fitting part 5 of a holder 1, a fitting hole 7 of a nozzle adapter 6a is fitted to the fitting part 5, and a support member is then inserted from above the nozzle adapter 6. 11 and engages the hole 12a with the stepped portion 17. In this state, align the screw insertion port 15 and the mounting hole 17. Next, insert the screw 16 into the screw insertion port 15 and insert it into the mounting hole. 17
It is assembled by tightening it.

In this embodiment as well, by tightening the screw 16 into the mounting hole 17, the nozzle adapter 6a can be pressed in the direction of the holder 1, and the elastic ring 10 can be pressed and deformed between the opposing surfaces of the holder 1 and the nozzle adapter 6a. Therefore, as in the previous embodiment, the holder 1 and the nozzle adapter 6a can be connected watertightly without causing leakage of the supplied fuel, and in the assembled state, the nozzle adapter 6a can be moved around the axis against a somewhat low drag force. Therefore, by appropriately rotating the nozzle adapter 6a and correcting the misalignment in an appropriate direction, it is possible to prevent the combustion flame from coming into contact with the heat exchanger or the inside of the combustion chamber.

(Effects of the invention) As explained above, according to the invention, by fixing the support member to the casing, the nozzle adapter is pressed in the direction of the holder, and the elastic rings are clamped between their opposing surfaces. The nozzle adapter and the holder can be connected watertight without leaking the supplied fuel, and the nozzle adapter can be rotated around the axis in the assembled state, so that the fuel spray from the fuel nozzle can be temporarily removed. Even if the combustion flame is deflected from the axis of the burner during combustion, the nozzle adapter can be rotated appropriately to correct the misalignment in the appropriate direction. contact can be prevented.

[Brief explanation of the drawing]

Figures 1a and 1b show an embodiment of the present invention. Figure 1a is a sectional view of the burner structure, Figure 1b is an exploded perspective view of the burner structure, and Figure 2a is a pressure spray combustion method. FIG. 2B is a sectional view showing a conventional burner structure, and FIG. 3 is an exploded perspective view of the burner structure showing another embodiment of the present invention. 1...Holder, 2...Fuel supply pipe, 3...
...Casing, 6, 6a...Nozzle adapter, 8
... Nozzle, 10 ... Elastic ring, 11, 11a
...Supporting member.

Claims (1)

[Scope of utility model registration request] A holder to which a fuel supply pipe is connected and which is fixed to the casing and a nozzle adapter having a fuel spray nozzle at one end are rotatably connected via an elastic ring, and the nozzle adapter is rotated in the direction of the holder. A burner structure for a pressure spray combustion device, characterized in that a support member that is in pressure contact with a casing is fixed to a casing.