Stove burner

Abstract

A stove burner comprises a furnace end, a fire distributor seat, an inner fire cover and an outer ring fire cover, the furnace end comprises a gas outlet part, a central injection pipe and an outer ring injection pipe, and the outer ring injection pipe comprises an inner injection pipe and an outer injection pipe; the fire distributor seat comprises a central fire cover seat, a gas inlet interface, a seat gas distribution cavity, a secondary gas distribution cavity, a primary gas distribution cavity and an outer ring gas groove, the gas inlet interface is positioned in the seat gas distribution cavity, and the secondary gas distribution cavity and the primary gas distribution cavity are connected and communicated with the seat gas distribution cavity and the outer ring gas groove; the outer diffuser pipe and the center diffuser pipe are inserted into the center air inlet pipe and the outer ring air inlet pipe respectively and are sealed, the base air distribution cavity is inserted into the air distribution cavity, the mother air distribution cavity is inserted into the air guide cavity, and the son air distribution cavity is inserted into the air guide cavity. The outer ring injection pipe adopts the structure, fuel gas enters the inner injection pipe, air is introduced to be mixed and pressurized, then air ejected from the outer injection pipe is mixed with air and fuel gas mixed gas, the mixed gas is compressed through the compression throat and enters the outer diffusion pipe, full mixing is achieved, air is sufficient, combustion is sufficient, and the energy efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a stove burner, in particular to an ejector pipe of the burner. Background Art

[0002] The current existing technology, Chinese patent 200810183692.2, is a set of dual-purpose gas burners. Two sets of burner sets are used. The central set is a high- and low-pressure dual-flow oxygen-supplied gas burner. The nozzle is connected to the first-level ejector tube and installed in the wind chamber. The other end of the wind chamber is connected to the second-level ejector tube and the combustion head. When the gas enters the first-level ejector tube from the nozzle, the air is sucked in by the bell mouth of the ejector tube for ejection and diffusion. The air blown in by the fan enters the wind chamber and continues to be ejected and diffused to the second-level ejector tube. After the secondary diffusion of the double airflow, the gas enters the combustion head and sprays out the fire cover for high-power fierce fire combustion. The outer circle group is a natural oxygen-supplied ejector gas burner. The nozzle is connected to the ejector tube and installed on the combustion head. When the gas enters the ejector tube from the nozzle, the air is sucked in by the bell mouth of the ejector tube for diffusion and mixing, and then enters the combustion head to spray out the fire hole for slow fire combustion. There are problems: a fan is required, and the first-level ejector tube only serves to introduce gas.

[0003] Chinese Patent 201810421056.2, a gas nozzle and burner for reducing noise, the burner is composed of the venturi tube and the gas nozzle, the gas nozzle is used to spray gas toward the venturi tube and simultaneously introduce air. The venturi tube has opposite first and second ends of the venturi tube, the first end of the venturi tube is provided with a contraction, the contraction has an air inlet for introducing air, the contraction is provided with a guide ring for diverting to reduce aerodynamic noise, the guide ring is connected to the contraction and positioned inside the contraction, the guide ring has an outer surface facing the contraction and an inner surface away from the contraction, a first introduction channel is formed between the outer surface of the guide ring and the contraction, and a second introduction channel is formed on one side of the inner surface of the guide ring. The problem is that air and gas enter together and then mix, and there is a hidden danger of insufficient air. Utility Model Content

[0004] The utility model aims to provide a stove burner which has the characteristics of sufficient air, uniform mixing of air and gas and full combustion.

[0005] The utility model is realized in this way: a stove burner, which is special in that it includes a burner head, a fire distributor seat, an inner fire cover and an outer ring fire cover,

[0006] The furnace head includes a gas outlet, a central ejector tube and an outer ring ejector tube, and the outer ring ejector tube includes an inner ejector tube and an outer ejector tube.

[0007] The air outlet part includes a central air inlet pipe, a central air outlet pipe, an outer ring air inlet pipe, an axial air guide pipe, an air inlet guide cavity, a plurality of air guide cavities and a branch air cavity. The air inlet guide cavity and the air guide cavity are evenly distributed around the branch air cavity and are connected with the branch air cavity. The central air outlet pipe extends into the branch air cavity. The axial air guide pipe connects the outer ring air inlet pipe and the air inlet guide cavity.

[0008] The external ejector tube includes an external cylindrical portion, an external compression tube portion, an external compression throat and an external expansion tube.

[0009] The inner ejector tube comprises an inner compression tube portion, an inner compression throat and an inner expansion tube; an air ejector hole is arranged on the circumferential wall upper plate of the opening end of the inner compression tube portion;

[0010] The outer end cover is provided with a nozzle mounting hole and air inlet holes on both sides;

[0011] The outer end cover is arranged in the open end of the cylindrical part; the open end of the inner compression tube part is fixed to the outer end cover, the gas outlet end of the inner diffuser tube is opposite to the outer compression throat, the inner diffuser tube and the outer compression tube part form an annular air cavity, the annular air cavity is connected to the air inlet hole, and the air ejection hole is connected to the annular air cavity; the gas-air mixture ejected from the inner diffuser tube and the ejected air of the annular air cavity enter the outer diffuser tube through the outer compression throat;

[0012] The central ejector tube comprises a central cylindrical portion, a central compression tube portion, a central compression throat, a central diffuser tube and a central end cover, and the central end cover is provided with a central nozzle mounting hole and a central air inlet hole;

[0013] The fire distributor seat includes a central fire cover seat, an air inlet interface, a seat air cavity with a lower opening, a plurality of sub-air cavities with lower openings, a mother air cavity and an outer ring gas groove, the air inlet interface is located in the seat air cavity, the sub-air cavity, the mother air cavity are connected and communicated with the seat air cavity and the outer ring gas groove, and the seat air cavity and the outer ring gas groove between two adjacent sub-air cavities and between the mother air cavity and the sub-air cavity form an axial secondary gas channel;

[0014] The outer diffuser tube and the central diffuser tube are respectively inserted into the central air inlet tube and the outer ring air inlet tube and sealed, the seat air cavity is inserted into the air cavity, the mother air cavity is inserted into the air guide cavity, and the sub-air cavity is inserted into the air guide cavity.

[0015] The stove burner is special in that: the air inlet cavity is provided with one, and the air guide cavity is provided with two.

[0016] The stove burner is special in that it also includes an annular support plate surrounding the air distribution cavity, the air guide cavity and the air inlet cavity, and a fixed seat plate is provided on the annular support plate between the air inlet cavity and the air guide cavity and between the two air guide cavities, and screw holes are provided on the fixed seat plate.

[0017] The stove burner is special in that the intersection of the two air guide cavities is convex toward the air separation cavity, and a fixing base plate for the ignition needle and the induction needle is arranged between the two.

[0018] The stove burner is special in that the nozzle mounting hole and the air inlet hole are located on a straight line parallel to the water surface.

[0019] The stove burner is special in that: two air ejection holes are provided, and the straight line where the air ejection holes are located is parallel to the horizontal plane.

[0020] The stove burner is special in that the outer end cover and the center end cover are integrally formed and called the end cover.

[0021] The end cover is provided with a side opening central air inlet hole, a central nozzle mounting hole, a central air inlet hole, an air inlet hole, a nozzle mounting hole and a side opening air inlet hole from left to right;

[0022] The outer ejection tube and the central ejection tube are formed in one step, and the outer cylindrical portion and the central cylindrical portion intersect and form an end cap cavity;

[0023] The end cover is embedded in the end cover cavity, the side opening central air inlet hole and the central cylindrical part constitute the central air inlet hole, and the side opening air inlet hole and the outer cylindrical part constitute the air inlet hole.

[0024] The utility model discloses a stove burner, wherein the outer ring ejector tube adopts such a structure that the gas enters the inner ejector tube and is introduced into the air for mixing and pressurizing, and then the air ejected from the outer ejector tube is mixed with the air-gas mixture and compressed through the compression throat to enter the outer diffuser tube, thereby achieving full mixing, sufficient air, full combustion, and improving energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a cross-sectional view of the utility model.

[0026] Figure 2 yes Figure 1 A-A view of.

[0027] Figure 3 It is a stereogram of the utility model.

[0028] Figure 4 It is one of the three-dimensional exploded views of the utility model.

[0029] Figure 5 This is the second three-dimensional exploded view of the present utility model.

[0030] Figure 6 This is one of the three-dimensional exploded views of the second embodiment of the utility model.

[0031] Figure 7 This is the second three-dimensional exploded view of the second embodiment of the utility model.

[0032] Figure 8 It is a top view of a furnace head according to a second embodiment of the present invention.

[0033] Fig. 9 It is a cross-sectional view of a second embodiment of the present utility model.

[0034] Fig.10 yes Fig. 9 B-B view.

[0035] Fig.11 yes Fig.10 C-C view of the . DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Example 1

[0039] like Figure 1 , Figure 2 As shown, an outer ring ejector tube, the outer ring ejector tube 1 comprises an outer ejector tube 2, an inner ejector tube 3 and an outer end cover 4,

[0040] The external ejector tube 2 includes an external cylindrical portion 21, an external compression tube portion 22, an external compression throat 23 and an external pressure-expanding tube 24. The volume of the external compression tube portion 22 gradually decreases from the air inlet end to the air outlet end, playing a compression role; the external pressure-expanding tube is in the shape of a truncated cone, with the top round end connected to the external compression throat 23 and the bottom round end as the air outlet end. During the flow process, the pressure is gradually released;

[0041] The inner ejector tube 3 comprises an inner compression tube portion 31, an inner compression throat 32 and an inner expansion tube 33; an air ejector hole 311 is provided on the circumferential wall upper plate of the opening end of the inner compression tube portion 31;

[0042] The outer end cover 4 is provided with a nozzle mounting hole 41 and air inlet holes 42 located on both sides;

[0043] The outer end cover 4 is arranged in the open end of the outer cylindrical part 21; the open end of the inner compression tube part 31 is fixed to the outer end cover 4, the outlet end of the inner diffuser tube 33 is opposite to the outer compression throat 23, the inner diffuser tube 33 and the outer compression tube part 22 form an annular air cavity, the annular air cavity is connected to the air inlet hole 42, and the air injection hole 311 is connected to the annular air cavity; the gas-air mixture ejected from the inner diffuser tube 33 and the air ejected from the annular air cavity are compressed through the outer compression throat 23 and enter the outer diffuser tube 24. The volume of the annular air cavity decreases from the inlet end to the outlet end, and the air is compressed.

[0044] like Figure 3 As shown, the nozzle mounting hole 41 and the air inlet hole 42 are located on a straight line parallel to the water surface. The Y axis is parallel to the horizontal plane, and the nozzle mounting hole 41 and the air inlet hole 42 are distributed along the Y axis;

[0045] like Figure 4 As shown, there are two air ejection holes 311, and the straight line where the air ejection holes 311 are located is parallel to the horizontal plane. The air ejection holes 311 are arranged along the Y axis. Three, or more than four air ejection pipes 311 can be arranged.

[0046] Through experimental tests, the outer ring ejector tube installed on the corresponding combustion system can greatly improve the working conditions of the combustion system (increased heat load, improved thermal efficiency, and reduced smoke under the same conditions). The test results show that the outer ring ejector tube can withstand a liquefied gas flow nozzle diameter of about 1.10mm and a natural gas flow nozzle diameter of about 1.90mm on the same burner; the maximum value commonly used in the market is about 1.04mm, and the natural gas flow nozzle is about 1.60mm;

[0047] This embodiment can be used on Chinese Patent 201810019898.5, a dry-burning-proof single-injection tube stove burner, which can achieve a large gas flow, a high burner power, sufficient air, and full combustion.

[0048] Example 2

[0049] On the basis of Example 1: it also includes a central ejector tube 5, which includes a central cylindrical portion 51, a central compression tube portion 52, a central compression throat 53, a central diffuser tube 54 and a central end cover 55, and the central end cover 55 is provided with a central nozzle mounting hole 551 and two central air inlet holes 552, and the central air inlet holes 552 are arranged on the left and right sides of the central nozzle mounting hole 551;

[0050] The outer end cover 4 and the center end cover 55 are integrally formed and are called end covers.

[0051] like Figure 4 As shown, the end cover is provided with a side opening central air inlet hole, a central nozzle mounting hole 551, a central air inlet hole 552, an air inlet hole, a nozzle mounting hole and a side opening air inlet hole from left to right;

[0052] The outer ejection tube 2 and the central ejection tube 5 are formed in one step, and the outer cylindrical portion 21 and the central cylindrical portion 51 intersect and form an end cap cavity;

[0053] The end cover is engaged with the end cover cavity, the side opening central air inlet hole and the central cylindrical portion 51 constitute the central air inlet hole 552 , and the side opening air inlet hole and the outer cylindrical portion 21 constitute the air inlet hole 42 .

[0054] Example 3

[0055] A stove burner comprises a burner head 6, a fire distributor seat 7, an inner fire cover 8 and an outer ring fire cover 9.

[0056] The furnace head 6 includes a gas outlet, a central ejector tube 5 and an outer ring ejector tube 1;

[0057] The gas outlet portion includes a central air inlet pipe 61, a central air outlet pipe 62, an outer ring air inlet pipe 63, an axial air guide pipe 64, an air inlet guide cavity 65, a plurality of air guide cavities 66 and an air distribution cavity 67. The air inlet guide cavity 65 and the air guide cavity 66 are evenly distributed around the air distribution cavity 67 and are connected to the air distribution cavity 67. The central air outlet pipe 62 extends into the air distribution cavity 67. The axial air guide pipe 64 connects the outer ring air inlet pipe 63 and the air inlet guide cavity 65. The gas and air entering the axial air guide pipe 64 are premixed. The central air inlet pipe 61 is connected to the central air outlet pipe 62.

[0058] The fire distributor seat 7 includes a central fire cover seat 71, an air inlet interface 711, a seat air cavity 72 with a lower opening, a plurality of sub-air cavities 73 with lower openings, a mother air cavity 74 and an outer ring gas groove 75, the air inlet interface is located in the seat air cavity 72, the sub-air cavity 73 and the mother air cavity 74 are respectively connected and communicated with the seat air cavity 72 and the outer ring gas groove 75, and the seat air cavity 72 and the outer ring gas groove 75 between two adjacent sub-air cavities 73 and between the mother air cavity 74 and the sub-air cavity 73 constitute an axial secondary gas channel;

[0059] The outer diffuser tube 24 and the central diffuser tube 54 are respectively inserted into the central air inlet pipe 61 and the outer ring air inlet pipe 63 and sealed, the seat air cavity 72 is inserted into the air cavity 67, the mother air cavity 74 is inserted into the air guide cavity 65, and the sub-air cavity 73 is inserted into the air guide cavity 66.

[0060] The air inlet guide cavity 65 is provided with one, and the air guide cavity 66 is provided with two.

[0061] As a further improvement of the utility model, it also includes an annular support plate 68 surrounding the air dividing cavity 67, the air guiding cavity 66 and the air inlet cavity 65, and a fixed seat plate 69 is provided on the annular support plate between the air inlet cavity 65, the air guiding cavity 66 and the two air guiding cavities 66, and the fixed seat plate is provided with screw holes.

[0062] As a further improvement of the present invention: the intersection of the two air guide cavities 66 is convex toward the air dividing cavity 67, and a fixing base plate 60 for the ignition needle and the induction needle is provided between the two.

[0063] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A stove burner, characterized in that: It includes a burner head, a fire distributor seat, an inner fire cover and an outer ring fire cover. The furnace head includes a gas outlet, a central ejector tube and an outer ring ejector tube, and the outer ring ejector tube includes an inner ejector tube and an outer ejector tube. The air outlet part includes a central air inlet pipe, a central air outlet pipe, an outer ring air inlet pipe, an axial air guide pipe, an air inlet guide cavity, a plurality of air guide cavities and a branch air cavity. The air inlet guide cavity and the air guide cavity are evenly distributed around the branch air cavity and are connected with the branch air cavity. The central air outlet pipe extends into the branch air cavity. The axial air guide pipe connects the outer ring air inlet pipe and the air inlet guide cavity. The external ejector tube includes an external cylindrical portion, an external compression tube portion, an external compression throat and an external expansion tube. The inner ejector tube comprises an inner compression tube portion, an inner compression throat and an inner expansion tube; an air ejector hole is arranged on the circumferential wall upper plate of the opening end of the inner compression tube portion; The outer end cover is provided with a nozzle mounting hole and air inlet holes on both sides; The outer end cover is arranged in the open end of the cylindrical part; the open end of the inner compression tube part is fixed to the outer end cover, the gas outlet end of the inner diffuser tube is opposite to the outer compression throat, the inner diffuser tube and the outer compression tube part form an annular air cavity, the annular air cavity is connected to the air inlet hole, and the air ejection hole is connected to the annular air cavity; the gas-air mixture ejected from the inner diffuser tube and the ejected air from the annular air cavity enter the outer diffuser tube through the outer compression throat; The central ejector tube comprises a central cylindrical portion, a central compression tube portion, a central compression throat, a central diffuser tube and a central end cover, and the central end cover is provided with a central nozzle mounting hole and a central air inlet hole; The fire distributor seat includes a central fire cover seat, an air inlet interface, a seat air cavity with a lower opening, a plurality of sub-air cavities with lower openings, a mother air cavity and an outer ring gas groove, the air inlet interface is located in the seat air cavity, the sub-air cavity, the mother air cavity are connected and communicated with the seat air cavity and the outer ring gas groove, and the seat air cavity and the outer ring gas groove between two adjacent sub-air cavities and between the mother air cavity and the sub-air cavity form an axial secondary gas channel; The outer diffuser tube and the central diffuser tube are respectively inserted into the central air inlet tube and the outer ring air inlet tube and sealed, the seat air cavity is inserted into the air cavity, the mother air cavity is inserted into the air guide cavity, and the child air cavity is inserted into the air guide cavity.

2. A stove burner according to claim 1, characterized in that: The air inlet cavity is provided with one, and the air guide cavity is provided with two.

3. A stove burner according to claim 1, characterized in that: It also includes an annular support plate surrounding the air distribution cavity, the air guide cavity and the air inlet cavity. A fixed seat plate is provided on the annular support plate between the air inlet cavity and the air guide cavity and between the two air guide cavities. The fixed seat plate is provided with screw holes.

4. A stove burner according to claim 3, characterized in that: The intersection of the two air guide cavities is convex toward the air dividing cavity, and a fixing seat plate for an ignition needle and a sensing needle is arranged between the two.

5. The stove burner according to claim 1, characterized in that: The nozzle mounting hole and the air inlet hole are located on a straight line parallel to the water surface.

6. A stove burner according to claim 2, characterized in that: There are two air ejection holes, and the straight line where the air ejection holes are located is parallel to the horizontal plane.

7. The stove burner according to claim 1, characterized in that: The outer end cap and the center end cap are integrally formed and are called end caps. The end cover is provided with a side opening central air inlet hole, a central nozzle mounting hole, a central air inlet hole, an air inlet hole, a nozzle mounting hole and a side opening air inlet hole from left to right; The outer ejection tube and the central ejection tube are formed in one step, and the outer cylindrical portion and the central cylindrical portion intersect and form an end cap cavity; The end cover is embedded in the end cover cavity, the side opening central air inlet hole and the central cylindrical part constitute the central air inlet hole, and the side opening air inlet hole and the outer cylindrical part constitute the air inlet hole.

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