CN219414753U - Jet entrainment type full-premix gas burner - Google Patents
Jet entrainment type full-premix gas burner Download PDFInfo
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- CN219414753U CN219414753U CN202320567888.1U CN202320567888U CN219414753U CN 219414753 U CN219414753 U CN 219414753U CN 202320567888 U CN202320567888 U CN 202320567888U CN 219414753 U CN219414753 U CN 219414753U
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Abstract
The utility model relates to a jet entrainment type full-premix gas burner, which comprises a base and at least one distributor, wherein a gas chamber is arranged in the base and provided with a gas inlet, and the base is provided with a gas outlet right opposite to the distributor; the distributor comprises a connecting seat, a distributor body and a distributor cap, wherein the connecting seat is fixed under the distributor body through a connecting plate, and an air inlet is formed in the center of the connecting seat; the distributor body is internally provided with an upper opening cavity and a lower opening cavity, the inner peripheral wall of the cavity is raised towards the center of the cavity and is provided with a plurality of combustion chambers, adjacent combustion chambers are separated by raised edge parts on the inner wall of the cavity, the lower part of each combustion chamber is an air inlet, and the upper part of each combustion chamber is a flame jet; the fire dividing cap is clamped between the tops of the edge parts. According to the utility model, the entrainment phenomenon of gas jet flow can be utilized to automatically bring air into the combustion chamber from the air inlet to complete full premixed combustion, the height of outer flame of combustion flame is reduced through the wall attaching effect of the fire separating cap, the fire passing area is increased, full combustion is realized, and the emission of harmful gas is reduced.
Description
Technical Field
The utility model relates to the technical field of combustors, in particular to a jet entrainment type full-premix gas combustor.
Background
The burner needs to mix the fuel gas and the oxygen in the air for combustion in the working process, and covers a plurality of fields of industry, business, civilian use and the like. At present, a combustor which uses gas as fuel and has heat flow exceeding 25KW is generally required to support combustion by a fan, otherwise, the required power of more than 25KW cannot be achieved, the phenomenon of incomplete combustion is easy to generate, the generated flame is orange yellow and is accompanied with black smoke, the temperature is uneven, and meanwhile, the fan is used for supporting combustion and has the defects of high noise, high energy consumption and the like, so that the development of a low-pressure self-air-suction gas combustor without fan for supporting combustion at present becomes the primary purpose of industry development.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the jet entrainment type full-premix gas burner, air is brought into a combustion chamber from an air inlet to complete full-premix combustion through entrainment phenomenon of gas jet, the air inlet is accelerated by increasing the flow speed, the outer flame height of combustion flame is reduced through the wall attaching effect of a fire separating cap, the fire passing area is increased, and the full combustion is realized and the emission of harmful gas is reduced.
The utility model is realized by the following technical scheme:
the jet entrainment type full-premix gas burner comprises a base and at least one distributor arranged on the base, wherein a gas chamber is arranged in the base and provided with a gas inlet, and the surface of the base is provided with a gas outlet opposite to each distributor; the distributor comprises a connecting seat, a distributor body and a distributor cap which are sequentially arranged from bottom to top, wherein the connecting seat is fixed under the distributor body through a connecting plate, and an air inlet is formed in the center of the connecting seat; the distributor body is internally provided with a cavity with an upper opening and a lower opening, the inner peripheral wall of the cavity is raised towards the center of the cavity and is provided with a plurality of combustion chambers, the adjacent combustion chambers are separated by raised edge parts on the inner wall of the cavity, the lower part of each combustion chamber is an air inlet, and the upper part is a flame jet; the fire dividing cap is clamped between the tops of the edge parts.
Preferably, the internal spaces of adjacent two combustion chambers are different in size.
The internal spaces of two adjacent combustion chambers are kept different in size, the mixed detonation time of fuel gas and air in the combustion chamber of a large space is early, the detonation time of fuel gas and air in the combustion chamber of a small space is late, and the fuel gas and the air can be ignited alternately during combustion, so that the combustion stability of flame is improved, and the flame separation is reduced.
Further, the external diameter of the connecting seat is smaller than the internal diameter of the cavity, the connecting plate is arranged corresponding to the edge part, and the connecting plate is chamfered inwards to form an arc-shaped plate bent towards the center of the cavity.
The connecting seat is arranged right below the distributor and is connected with the distributor through the connecting plate, and the arc-shaped bending of the connecting plate is carried out on the air inlets of the two adjacent arc-shaped plates corresponding to one combustion chamber, so that the durability of the connecting plate can be enhanced, and the stable air inlet flow of the air inlets is not influenced.
Further, the top of each edge part is provided with a fire gathering platform which is positioned on the same plane and is lower than the top of the distributor body.
Each edge part forms a fire gathering platform at the top, and each fire gathering platform can be matched with a fire dividing cap to realize fire gathering effect, so that flame combustion stability is protected, and flame separation is reduced.
Preferably, the fire-dividing cap is one of hemispherical, spherical or inverted conical.
The fire dividing cap can be hemispherical, spherical or inverted conical, the plane of the fire dividing cap is kept upwards, flames can be blocked by the fire dividing cap, and the flames are guided to the plane for concentrated combustion by utilizing the coanda effect, so that the height of outer flames is reduced, the area of overfire is increased, full combustion is realized, and the emission of harmful gases is reduced.
Further, the gas outlet on the base is a threaded hole, the base and the connecting seat of the distributor are installed and fixed by a hollow screw penetrating through the gas inlet and the gas outlet, and a channel for communicating the gas chamber with the distributor is formed in the hollow screw.
The gas outlet of the base is a threaded hole, the distributor can be installed in the threaded hole of the base by using a hollow screw, and the gas in the gas chamber of the base can be injected into the distributor by a channel in the hollow screw and is diffused upwards to be contacted and mixed with air for combustion.
Further, the base circumference welding has the engaging lug, accessible connecting bolt and equipment connection.
The circumference of base can be with whole installation and fixed through setting up engaging lug cooperation connecting bolt, makes things convenient for follow-up installation to use.
The utility model has the beneficial effects that:
the self-air-suction effect designed by the utility model is equal to the air-suction effect of a blower, the combustion flame reduces the height of the outer flame through the wall-attaching effect of the fire separating cap, reduces the flame scattering, prevents the flame from being separated, promotes the overfire area, realizes full combustion and reduces the emission of harmful gas.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a schematic view showing the installation structure of the distributor and the distributor cap according to the present utility model.
Fig. 3 is a top view of the distributor of the present utility model.
Fig. 4 is a bottom view of the distributor of the present utility model.
Fig. 5 is a front view of the distributor of the present utility model.
Fig. 6 is a schematic structural view of a base in the present utility model.
Fig. 7 is a bottom view of fig. 6.
FIG. 8 is a cross-sectional view of a cannulated screw according to the present utility model.
The figure shows:
1. the fire distributor comprises a base, 2, a distributor, 3, a combustion chamber, 4, a fire distributing cap, 5, a rib part, 6, an air inlet, 7, a connecting seat, 8, a fire collecting platform, 9, an air inlet, 10, a connecting plate, 11, a gas outlet, 12, a connecting lug, 13, a gas inlet, 14, a hollow screw, 15, a channel, 16, an air chamber, 17 and a connecting bolt.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
Example 1:
the utility model relates to a jet entrainment type full premix gas burner, which comprises a base 1 and at least one distributor 2 arranged on the base 1, wherein the shape of the base 1 can be annular, square or rectangular, and the like, as an implementation mode of the utility model, the base 1 is designed into an annular shape, a gas chamber 16 is arranged in the base 1, a gas inlet 13 is arranged, the gas inlet 13 can be connected with a gas pipe and is used for supplying gas into the gas chamber 16, the surface of the base 1 is opposite to each distributor 2 and is provided with a gas outlet 11, as shown in fig. 6, in the embodiment, four distributors are arranged in the annular base 1, and the surface of the base 1 is respectively corresponding to each distributor 2 and is provided with the gas outlet 11. The gas outlet 11 on the base 1 is a threaded hole.
The distributor 2 comprises a connecting seat 7, a distributor body and a distributor cap 4 which are sequentially arranged from bottom to top, the connecting seat 7 is fixed under the distributor body through a connecting plate 10, an air inlet 6 is formed in the center of the connecting seat 7, the base 1 and the connecting seat 7 of the distributor 2 are fixedly installed through a hollow screw 14 penetrating through the air inlet 6 and a fuel gas outlet 11, and a channel 15 which is used for communicating an air chamber 16 with the distributor 2 is formed in the hollow screw 14. The external diameter of connecting seat 7 is less than the cavity internal diameter, and connecting plate 10 corresponds the arris portion 5 setting, and the inside chamfer of connecting plate 10 forms the arc of buckling to the cavity center. For the convenience of processing, in this embodiment, the connecting seat 7, the connecting plate 10 and the distributor body are integrally formed by casting.
The distributor body is internally provided with a cavity with an upper opening and a lower opening, the inner peripheral wall of the cavity is raised towards the center of the cavity and is provided with a plurality of combustion chambers 3, as shown in figure 2, six combustion chambers 3 are designed, adjacent combustion chambers 3 are separated by raised edge parts 5 on the inner wall of the cavity, the lower part of each combustion chamber 3 is an air inlet 9, and the upper part is a flame injection port; the fire dividing cap 4 is clamped between the tops of the edge parts 5. In the embodiment, the fire-dividing cap 4 is in an inverted cone shape, the plane of the inverted cone shape faces upwards, and the conical surface is clamped between the edge parts 5.
Example 2:
this embodiment differs from embodiment 1 in that in this embodiment, the internal spaces of two adjacent combustion chambers 3 are different in size in the distributor 2. Taking this embodiment as an example, in the inner cavity of the distributor 2, the diameters of two adjacent combustion chambers 3 are 12mm and 14mm in sequence, and the combustion chambers with the sizes are alternately arranged. Of course, the arrangement can be scaled up and down.
Example 3;
this embodiment differs from embodiment 1 in that: in this embodiment, in the inner cavity of the distributor 2, the top of each rib 5 is formed with a fire collecting platform 8 which is located on the same plane and is lower than the top of the distributor body. In this embodiment, the distance from the fire gathering platform 8 to the top of the distributor body is 6mm.
The fire dividing cap 4 is hemispherical, the hemispherical plane faces upwards, and the spherical surface is clamped between the edge parts 5.
Example 4:
in this embodiment, on the basis of embodiment 1, the base 1 is welded with a connecting lug 12 circumferentially, and can be connected with equipment by a connecting bolt 17. By providing the connecting lugs 12 in cooperation with the connecting bolts 17, the device can be used for integral installation and fixation.
When the burner is used, fuel gas enters the air chamber of the base 1 through the fuel gas pipe, is vertically and upwards sprayed into the combustion chamber 3 in the distributor body through the fuel gas outlet 13 on the top surface of the air chamber, when the fuel gas enters the lower part of the combustion chamber 3 through the channel 15 of the hollow screw 14, air can be accelerated to be brought into the combustion chamber 3 from the air inlet 9 on the lower part of the distributor 2 by utilizing the entrainment phenomenon of fuel gas jet flow to complete mixing, the flow speed is increased to accelerate the air inlet, the self-priming effect can be realized, the self-priming effect is equivalent to the air inlet of a blower, the air and the fuel gas are ignited and detonated in the combustion chamber 3, the outer flame height is reduced by the coanda effect of the fire dividing cap 4, the flame scattering is reduced, and meanwhile, the flame gathering platform 8 on the top end of the edge part 5 is matched, the flame separation can be prevented, the flame passing area is increased, the full combustion of the fuel gas is realized, and the emission of harmful gas is reduced.
Of course, the above description is not limited to the above examples, and the technical features of the present utility model that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical scheme of the present utility model and not for limiting the same, and the present utility model has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present utility model and the scope of the appended claims.
Claims (7)
1. The utility model provides a jet entrainment formula full premix gas burner which characterized in that: the gas distributor comprises a base and at least one distributor arranged on the base, wherein a gas chamber is arranged in the base and provided with a gas inlet, and the surface of the base is opposite to each distributor and provided with a gas outlet; the distributor comprises a connecting seat, a distributor body and a distributor cap which are sequentially arranged from bottom to top, wherein the connecting seat is fixed under the distributor body through a connecting plate, and an air inlet is formed in the center of the connecting seat; the distributor body is internally provided with a cavity with an upper opening and a lower opening, the inner peripheral wall of the cavity is raised towards the center of the cavity and is provided with a plurality of combustion chambers, the adjacent combustion chambers are separated by raised edge parts on the inner wall of the cavity, the lower part of each combustion chamber is an air inlet, and the upper part is a flame jet; the fire dividing cap is clamped between the tops of the edge parts.
2. The jet entrainment type full premix gas burner as set forth in claim 1, wherein: the internal spaces of two adjacent combustion chambers are different in size.
3. The jet entrainment type full premix gas burner as set forth in claim 1, wherein: the external diameter of connecting seat is less than the cavity internal diameter, and the connecting plate corresponds the arris portion setting, and the inwards chamfer of connecting plate forms the arc of buckling to the cavity center.
4. The jet entrainment type full premix gas burner as set forth in claim 1, wherein: the top of each edge part is provided with a fire gathering platform which is positioned on the same plane and is lower than the top of the distributor body.
5. The jet entrainment type full premix gas burner as set forth in claim 1, wherein: the fire-dividing cap is one of hemispherical, spherical or inverted conical.
6. The jet entrainment type full premix gas burner as set forth in claim 1, wherein: the gas outlet on the base is a threaded hole, the base and the connecting seat of the distributor are installed and fixed by a hollow screw penetrating through the gas inlet and the gas outlet, and a channel for communicating the gas chamber with the distributor is formed in the hollow screw.
7. The jet entrainment type full premix gas burner as set forth in claim 1, wherein: the base circumference welding has the engaging lug, accessible connecting bolt and equipment connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320567888.1U CN219414753U (en) | 2023-03-22 | 2023-03-22 | Jet entrainment type full-premix gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320567888.1U CN219414753U (en) | 2023-03-22 | 2023-03-22 | Jet entrainment type full-premix gas burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219414753U true CN219414753U (en) | 2023-07-25 |
Family
ID=87236016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320567888.1U Active CN219414753U (en) | 2023-03-22 | 2023-03-22 | Jet entrainment type full-premix gas burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219414753U (en) |
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2023
- 2023-03-22 CN CN202320567888.1U patent/CN219414753U/en active Active
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