JPH0113228Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a gas burner chip for gas fuel, and is particularly suitable for low NO _x burners.

Prior Art A conventional gas burner chip is shown in FIG. This gas burner chip 1 has a cylindrical pilot part 4 connected to a front end wall 3 of a cylindrical main body part 2, and peripheral walls 5 and 6 of the main body part 2 and the pilot part 4 have main gas holes 7 and 6, respectively. A plurality of pilot gas holes 8 are drilled radially,
A communication hole 9 is bored in the front end wall 3 to communicate the interior of the main body 2 and the pilot part 4, and one end of a gas pipe 11 that is piped through the rear end wall 10 of the main body 2 is connected to the main body 2. It is open inward. The gas burner chip 1 is disposed at the center within the burner 12, and a swirler blade 13 is attached to the inner circumferential wall of the burner 12. Fuel gas is supplied into the main body 2 from the gas pipe 11. A part of it is supplied as pilot gas into the pilot part 4 via the communication hole 9, and is supplied to the pilot gas hole 8.
The flame stabilizing portion 14 is formed through stable combustion. Most of the remaining gas is ejected from the main gas hole 7 as the main gas, mixed with combustion air supplied via the swirler 13, reaches the flame stabilizing section 14, where it is ignited and combusted.

Problems to be Solved by the Invention However, according to the above conventional configuration, it is inconvenient because only one type of fuel gas can be used;
If two gas burner chips 1 are used to use different types of fuel gases, not only will the structure of the burner 12 become complicated, but the gas burner chips 1 cannot be placed in the center of the burner 12, so the fuel gas and combustion air will be separated. There was a problem that good mixing could not be ensured.

The object of the present invention is to provide a gas burner chip that solves the above problems.

Means for Solving the Problems In order to solve the above problems, the gas burner chip of the present invention is a gas burner chip that burns two types of first fuel gas and second fuel gas, and has a cylindrical main body. A cylindrical pilot part is connected to the front end, and the inside of the main body part is divided into two by a partition plate into a first main gas chamber at the rear and a second main gas chamber at the front, and the A plurality of first main gas holes and second main gas holes communicating with each of the two main gas chambers are radially bored,
The inside of the pilot section is divided into two by a partition plate into a first pilot gas chamber at the front and a second pilot gas chamber at the rear, and a first pilot gas chamber on the peripheral wall that communicates with each of the two pilot gas chambers. A plurality of pilot gas holes and a plurality of second pilot gas holes are formed radially, and the front end wall of the main body has a plurality of pilot gas holes.
A plurality of communication holes are formed to communicate the main gas chamber and the second pilot gas chamber, and a communication pipe is piped to pass through the first main gas chamber and the first pilot gas chamber, and the main gas chamber is connected to the main gas chamber. A first gas pipe, one end of which opens into the first main gas chamber, is piped through the rear end wall, and one end of the first gas pipe penetrates the partition plate of the main body part, and is piped with the second gas pipe. It is characterized in that a second gas pipe opening into the main gas chamber is inserted concentrically.

Function The gas burner chip having the above configuration is placed in the center of the burner, and a swirling blade is attached to the inner circumferential wall of the burner. The first fuel gas is supplied into the first main gas chamber from the first gas pipe. A part of it is supplied as the first pilot gas into the first pilot gas chamber via the communication pipe, and is ejected from the first pilot gas hole to stably burn and form the first flame stabilizing section.
Most of the remaining gas is ejected from the first main gas hole as the first main gas, mixed with the combustion air supplied via the swirler, and reaches the first flame stabilizing section where it is ignited and combusted. Further, the second fuel gas is supplied into the second main gas chamber from the second gas pipe.
A part of the gas is supplied as second pilot gas into the second pilot gas chamber via the communication hole, and is ejected from the second pilot gas hole to stably burn and form a second flame stabilizing section. Most of the remaining gas is ejected from the second main gas hole as the second main gas, mixed with the combustion air supplied via the swirler, and reaches the second flame holding section where it is ignited and combusted. As is clear from the above operation, it is also possible to simultaneously combust both the first and second fuel gases.

Embodiment Hereinafter, an embodiment of the present invention will be described based on FIG. 1, which is a sectional view of the embodiment.

The gas burner chip 20 of this embodiment has a cylindrical pilot portion 23 on a front end wall 22 of a cylindrical main body portion 21.
will be connected. The inside of the main body part 21 is divided into two by a partition plate 24 into a first main gas chamber 25 at the rear and a second main gas chamber 26 at the front, and a peripheral wall 27
A first main gas hole 28 and a second main gas hole 2 are connected to each of the main gas chambers 25 and 26.
A plurality of holes 9 are drilled radially. The inside of the pilot section 23 is divided into two parts by a partition plate 30 into a first pilot gas chamber 31 at the front and a second pilot gas chamber 32 at the rear, and a peripheral wall 33 has a wall that communicates with each of the pilot gas chambers 31 and 32. The first pilot gas hole 34 and the second pilot gas hole 35
Multiple holes are drilled radially. A plurality of communication holes 36 are formed in the front end wall 22 to communicate the inside of the second main gas chamber 26 and the inside of the second pilot gas chamber 32, and a communication pipe 37 is installed therethrough. The communication pipe 37 has both ends connected to both the partition plates 24 and 3.
0 into the first main gas chamber 25 and the first pilot gas chamber 31, and both chambers 25,
31 is connected. Rear end wall 38 of main body portion 21
A first gas pipe 39 whose one end opens into the first main gas chamber 25 is piped through the first gas pipe 3 .
A second gas pipe 40 is inserted concentrically into the interior of the gas pipe 9 . One end of the second gas pipe 40 penetrates the partition plate 24 and opens into the second main gas chamber 26 .

Hereinafter, the effects of the above configuration will be explained.

The gas burner chip 20 is centrally located within the burner 41. The inner peripheral wall of the burner 41 has swirl vanes 4.
2 is installed, and the swirling blade 42 creates a turbulent flow in the combustion air A supplied into the burner 41 via the swirling blade 42, and acts to equalize the mixing of the combustion air A and the fuel gas.

When using the first fuel gas B, the gas B
is supplied into the first main gas chamber 25 from the first gas pipe 39. A part of it is the first pilot gas C
The gas is supplied into the first pilot gas chamber 31 via the communication pipe 37, and the first pilot gas hole 34
The fuel is ejected and burns stably, forming the first flame stabilizing portion 43. Most of the remaining part is ejected from the first main gas hole 28 as the first main gas D, mixed with the combustion air A supplied via the swirler blade 42, and then
It reaches the flame holding part 43, is ignited, and burns.

In addition, when using the second fuel gas E, the gas E is supplied to the second main gas chamber 2 from the second gas pipe 40.
Supplied within 6 days. A part of it is supplied as the second pilot gas F into the second pilot gas chamber 32 via the communication hole 36, and is ejected from the second pilot gas hole 35 to stably burn, and then to the second flame stabilizing section 44.
form. Most of the remaining gas is ejected from the second main gas hole 29 as the second main gas G, mixed with the combustion air A, and reaches the second flame holding section 44 where it is ignited and combusted.

Note that when both the first and second fuel gases B and E are used at the same time, the above two cases act simultaneously and both fuel gases B and E are co-combusted.

Effects of the invention As described above, according to the invention, it is possible to burn two types of fuel gas exclusively and co-combust with one gas burner chip, so the structure of the burner can be simplified, and the gas burner chip can Since it can be placed in the center of the burner, good mixing of combustion air and fuel gas can be ensured, and therefore, the combustion of fuel gas can be reduced to low NO _x , which has many effects.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a gas burner chip showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing an example of a conventional gas burner chip. 20... Gas burner chip, 21... Main body,
22...Front end wall, 23...Pilot part, 24
...Partition plate, 25...First main gas chamber, 26...
...Second main gas chamber, 27...Peripheral wall, 28...First main gas hole, 29...Second main gas hole, 3
0... Partition plate, 31... First pilot gas chamber,
32... Second pilot gas chamber, 33... Surrounding wall,
34...First pilot gas hole, 35...Second pilot gas hole, 36...Communication hole, 37...Communication pipe, 38...Rear end wall, 39...First gas pipe, 40
...Second gas pipe, B...First fuel gas, E...Second fuel gas.

Claims (1)

[Scope of utility model registration request] A gas burner chip that burns two types of first fuel gas and second fuel gas, and includes a cylindrical pilot part connected to the front end wall of a cylindrical main body part, and the main body part has a partition plate inside. 2 into the first main gas chamber at the rear and the second main gas chamber at the front.
The peripheral wall has a first main gas hole and a second main gas hole that communicate with each of the two main gas chambers.
A plurality of main gas holes are drilled radially, and the inside of the pilot section is divided into two by a partition plate into a first pilot gas chamber at the front and a second pilot gas chamber at the rear, and the peripheral wall has two main gas holes. A plurality of first pilot gas holes and second pilot gas holes communicating with each chamber of the pilot chamber are bored in a radial manner, and the front end wall of the main body section is provided with a plurality of first pilot gas holes and a plurality of second pilot gas holes communicating with each chamber of the pilot chamber. A plurality of communicating holes are bored, and a communicating pipe communicating between the first main gas chamber and the first pilot gas chamber is piped through, and one end is connected to the rear end wall of the main body. A first gas pipe that opens into the first main gas chamber is piped through the first gas pipe, and a second gas pipe has one end that penetrates the partition plate of the main body and opens into the second main gas chamber. A gas burner chip characterized by tubes inserted concentrically.