Upper air inlet burner with single injection pipe

Abstract

An upper air inlet burner with a single injection pipe comprises a burner head, a fire distributor seat, a circular fire cover and an outer circular-ring-shaped fire cover, and the burner head comprises a circular seat plate, an air cavity, a circular-arc-shaped premixing cavity, a left circular-arc-shaped lower connector, a left lower air guide groove, a right circular-arc-shaped lower connector, a right lower air guide groove, a center air outlet seat and the injection pipe. The fire distributor seat comprises a cylindrical fire cover seat, a central gas inlet pipe, a left arc-shaped upper connector, a left upper gas guide groove, a right arc-shaped upper connector, a right upper gas guide groove and an outer ring gas groove, the left arc-shaped upper connector and the right arc-shaped upper connector are communicated with the outer ring gas groove, and the central gas inlet pipe is communicated with the central gas outlet seat; the left arc-shaped upper connector, the left upper gas guide groove, the right arc-shaped upper connector and the right upper gas guide groove are buckled and sealed with the left arc-shaped lower connector, the left lower gas guide groove, the right arc-shaped lower connector and the right lower gas guide groove respectively, and the circular fire cover and the outer annular fire cover are buckled with the cylindrical fire cover seat and the outer annular gas groove respectively. Compared with the prior art, the structure is simple, and the gas valve is simple in structure in use.

Description

TECHNICAL FIELD

[0001] The utility model relates to a stove burner, especially an upper air inlet burner. BACKGROUND

[0002] The prior art, Chinese patent 202321576825.9, an upper air inlet high-efficiency stove burner, comprises a burner head, a flow divider seat, a center fire cover and an outer circular ring fire cover, the burner head comprises an upper air inlet cavity, a center gas outlet connector, a center ejector pipe, two outer ring gas outlet connectors, an outer ring ejector pipe, an air inlet connector pipe and a nozzle, the flow divider seat comprises a circular seat plate, a center fire cover seat, secondary air holes, a circular arc-shaped gas groove and an air inlet seat, the outer ring wall plate of the center fire cover seat is provided with a center lower combustion hole and a center combustion groove, the outer arc-shaped wall plate of the circular arc-shaped gas groove is provided with an outer ring lower combustion hole at the lower part and an outer ring combustion groove at the upper end; the connector of the center gas outlet connector is inserted into the lower end of the center fire cover seat and supports the center fire cover seat, the connector of the outer ring gas outlet connector is inserted into the air inlet seat and supports the air inlet seat; the center fire cover is buckled with the upper end of the center fire cover seat, and the outer circular ring fire cover is buckled with the circular arc-shaped gas groove and the gap therebetween. The problems are: complex structure, provided with the center ejector pipe and the outer ring ejector pipe, the air inlet ends of the center ejector pipe and the outer ring ejector pipe are located in the upper air inlet cavity, and there is a hidden danger of mutual interference. SUMMARY

[0003] The utility model aims at: provide a single ejector pipe upper air inlet burner, it has an ejector pipe, the characteristics of simple structure.

[0004] The utility model is realized in this way: a single ejector pipe upper air inlet burner, which is characterized by comprising a burner head, a flow divider seat, a circular fire cover and an outer circular ring fire cover,

[0005] The burner head comprises a circular seat plate, an air cavity provided with an opening in the front part, a circular arc-shaped premixing cavity provided in the rear part, a left circular arc-shaped lower connector, a left lower gas guide groove, a right circular arc-shaped lower connector, a right lower gas guide groove, a center gas outlet seat and an ejector pipe, the ejector pipe communicates the air cavity and the circular arc-shaped premixing cavity, and the air cavity is provided with an air inlet hole;

[0006] The flow divider seat comprises a cylindrical fire cover seat, a center air inlet pipe, a left circular arc-shaped upper connector, a left upper gas guide groove, a right circular arc-shaped upper connector, a right upper gas guide groove and an outer ring gas groove, the left circular arc-shaped upper connector and the right circular arc-shaped upper connector are communicated with the outer ring gas groove, and the left upper gas guide groove and the right upper gas guide groove are connected and communicated with the center air inlet pipe and the left circular arc-shaped upper connector and the right circular arc-shaped upper connector respectively; the cylindrical fire cover seat is provided with a center combustion groove, and the outer ring gas groove comprises an outer ring combustion groove and a radial ignition groove provided on the outer ring wall plate;

[0007] The center air inlet pipe is communicated with the center air outlet seat, the left circular arc upper interface, the left upper air guide groove, the right circular arc upper interface and the right upper air guide groove are respectively buckled and sealed with the left circular arc lower interface, the left lower air guide groove, the right circular arc lower interface and the right lower air guide groove, and the circular fire cover and the outer circular ring fire cover are respectively buckled with the cylindrical fire cover seat and the outer ring gas groove.

[0008] Preferably, the rear part of the center air outlet seat is provided with an axial positioning protrusion, and the front part of the center air outlet seat is provided with two side axial protrusions, and the center air outlet seat between the two side axial protrusions forms a positioning groove.

[0009] The front part of the center air inlet pipe is provided with a front circular arc plate, and the rear part of the center air inlet pipe is provided with a rear circular arc plate, and the rear circular arc plate is provided with an axial groove.

[0010] The front circular arc plate is inserted into the positioning groove, and the rear circular arc plate is inserted into the center air outlet seat and the axial positioning protrusion and the axial groove are embedded.

[0011] Preferably, the inner wall of the cylindrical fire cover seat is provided with at least four axial support seats, and the cylindrical fire cover seat between the two adjacent axial support seats is provided with the center combustion groove.

[0012] The center combustion groove includes a deep center combustion groove and a shallow center combustion groove.

[0013] The lower surface of the circular fire cover is provided with a circular ring groove with a lower opening,

[0014] The axial support seat extends into the circular ring groove and is attached to the inner ring wall plate, and the upper end supports the top plate of the circular ring groove, and the deep center combustion groove and the shallow center combustion groove are opposite to the circular ring groove.

[0015] Preferably, the outer end of the outer ring gas groove is in the shape of an inverted circular truncated cone, and the outer ring gas groove includes a deep outer ring combustion groove and a shallow outer ring combustion groove.

[0016] The outer circular ring fire cover is in the shape of an inverted circular truncated cone, and is provided with an outer circular ring groove with a lower opening.

[0017] The inner ring wall plate of the outer ring gas groove is inserted into the inner ring wall plate of the outer circular ring groove, and the top plate of the outer circular ring groove covers the upper end of the deep outer ring combustion groove and the shallow outer ring combustion groove.

[0018] Preferably, there is a gap between the outer ring wall plate of the outer ring gas groove and the outer ring wall plate of the outer circular ring groove.

[0019] Preferably, it further includes an air inlet joint and a nozzle, the nozzle is arranged at the air outlet end of the air inlet joint, the air inlet joint is fixed with the furnace head, and the nozzle extends into the air cavity.

[0020] Preferably, the injection pipe is sequentially provided with a circular truncated cone compression part, a cylindrical neck part and a circular truncated cone expansion part from the air inlet end to the air outlet end.

[0021] Preferably, the outer ring gas groove is provided with a front opening upper frame cavity on the bottom plate,

[0022] The upper end of the air cavity passes through the circular seat plate and extends upward, and the front wall plate of the air cavity is provided with a front opening.

[0023] The upper frame cavity and the upper end of the air cavity are buckled to form an air inlet cavity with a front opening.

[0024] Compared with the prior art, the single-injection-pipe upper air inlet burner has simple structure and simple gas valve structure during use. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a top view of the present application.

[0026] Figure 2 is Figure 1 A-A view of the present application.

[0027] Figure 3 is Figure 1 B-B view of the present application.

[0028] Figure 4 is one of the perspective views of the present application.

[0029] Figure 5 is another perspective view of the present application.

[0030] Figure 6 is one of the perspective exploded views of the present application.

[0031] Figure 7 is another perspective exploded view of the present application.

[0032] Figure 8 is a third perspective exploded view of the present application.

[0033] Figure 9 is a top view of the burner head of the present application.

[0034] Figure 10 is a top view of the igniter seat of the present application.

[0035] Figure 11 is a bottom view of the igniter seat of the present application. DETAILED DESCRIPTION

[0036] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0037] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, term " install " " link " " connection " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside communication. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model with specific situation.

[0038] As Figure 1 , Figure 2 , Figure 3 As shown in a kind of single ejection pipe upper air inlet burner, including furnace head 1, fire divider seat 2, circular fire cover 3 and outer circular ring fire cover 4,

[0039] Furnace head 1 includes circular seat plate 11, air cavity 12 with upper opening, which is arranged at the front of the lower surface of circular seat plate 11 and has upper opening, circular arc premixing cavity 13, which is arranged at the rear and located on the lower surface of circular seat plate 11, left circular arc lower interface 141 with upper opening, left lower air guide groove 151 with upper opening, right circular arc lower interface 142 with upper opening, right lower air guide groove 152 in upper opening, center air outlet seat 16 and ejection pipe 17, ejection pipe 17 communicates air cavity 12 and circular arc premixing cavity 13, left circular arc lower interface 141 and right circular arc lower interface 142 are communicated with both ends of circular arc premixing cavity respectively, left circular arc lower interface 141, left lower air guide groove 151 and center air outlet seat 16 are communicated in turn, right circular arc lower interface 142, right lower air guide groove 152 and center air outlet seat 16 are communicated in turn;Air cavity 12 is provided with air inlet hole;

[0040] Fire divider seat 2 includes cylindrical fire cover seat 21, center air inlet pipe 22, left circular arc upper interface 231, left upper air guide groove 241, right circular arc upper interface 232, right upper air guide groove 242 and outer ring gas groove 25, left circular arc upper interface 231 and right circular arc upper interface 232 and outer ring gas groove 25 are communicated, left upper air guide groove 241 is connected with center air inlet pipe 22 and left circular arc upper interface 231, right upper air guide groove 242 is connected with right circular arc upper interface 232 and center air inlet pipe 22 and is communicated;Cylindrical fire cover seat 21 is provided with center combustion groove, outer ring gas groove 25 includes outer ring combustion groove and radial ignition groove 251 on outer ring wall plate;

[0041] The center gas inlet pipe 22 is connected and communicated with the center gas outlet seat 16, the left circular arc upper interface 231, the left upper air guide groove 241, the right circular arc upper interface 232 and the right upper air guide groove 242 are respectively buckled and sealed with the left circular arc lower interface 141, the left lower air guide groove 151, the right circular arc lower interface 142 and the right lower air guide groove 152, and the circular fire cover 3 and the outer circular ring fire cover 4 are respectively buckled with the cylindrical fire cover seat 21 and the outer ring gas groove 25. By adopting the structure, the gas enters the air cavity 12, the air enters from the upper opening of the air cavity 12, the gas and the air enter the injection pipe together and are premixed through compression and diffusion, and then enter the premixing cavity for full mixing, and finally enter the cylindrical fire cover seat 21 and the outer ring gas groove 25; one injection pipe supplies gas for the cylindrical fire cover seat 21 and the outer ring gas groove 25. By adopting the structure, the gas valve is simple in structure during use.

[0042] As a further improvement of the utility model: the rear part of the center gas outlet seat 16 is provided with an axial positioning protrusion 161, and the two sides of the front part are provided with side axial protrusions 162, and the center gas outlet seat 16 between the two side axial protrusions 162 constitutes a positioning groove;

[0043] The front part of the center gas inlet pipe 22 is provided with a front circular arc plate 221, and the rear part is provided with a rear circular arc plate 222, and the rear circular arc plate 222 is provided with an axial groove 2221;

[0044] The front circular arc plate 221 is inserted into the positioning groove, the rear circular arc plate 222 is inserted into the center gas outlet seat 16, and the axial positioning protrusion 161 and the axial groove 2221 are embedded.

[0045] As a further improvement of the utility model: the inner wall of the cylindrical fire cover seat 21 is provided with at least four axial support seats 211, and the cylindrical fire cover seat 21 between the two adjacent axial support seats is provided with the center combustion groove,

[0046] The center combustion groove includes a deep center combustion groove and a shallow center combustion groove;

[0047] The lower surface of the circular fire cover 3 is provided with a circular ring groove 31 with a lower opening,

[0048] The axial support seat 211 extends into the circular ring groove 31 and is attached to the inner ring wall plate, supports the top plate of the circular ring groove 31 at the upper end, and the deep center combustion groove and the shallow center combustion groove are opposite to the circular ring groove 31.

[0049] As a further improvement of the utility model: the upper end of the outer ring gas groove 25 is in the shape of an inverted circular truncated cone, and the outer ring combustion groove includes a deep outer ring combustion groove and a shallow outer ring combustion groove,

[0050] The outer circular ring fire cover 4 is in the shape of an inverted circular truncated cone and is provided with an outer circular ring groove 41 with a lower opening;

[0051] The inner ring wall plate of the outer ring gas groove 25 is inserted into the inner ring wall plate of the outer circular groove 41, and the top plate of the outer circular groove 41 covers the upper ends of the deep outer ring combustion groove and the shallow outer ring combustion groove.

[0052] As a further improvement of the utility model: there is a spacing between the outer ring wall plate of the outer ring gas groove 25 and the outer ring wall plate of the outer circular groove 41.

[0053] As a further improvement of the utility model: further comprising an air inlet joint 5 and a nozzle (not shown in the figure), the nozzle is arranged at the air outlet end of the air inlet joint 5, the air inlet joint 5 is fixed with the furnace head 1, and the nozzle extends into the air cavity 12.

[0054] The ejector pipe 17 is sequentially provided with a conical frustum-shaped compression part, a cylindrical neck part and a conical frustum-shaped diffusion part from the air inlet end to the air outlet end.

[0055] As a further improvement of the utility model: the bottom plate of the outer ring gas groove 25 is provided with a front-opened upper frame-shaped cavity 252,

[0056] The upper end of the air cavity 12 passes through the circular seat plate 11 and extends upward, and the front wall plate of the air cavity 12 is provided with a front opening 121;

[0057] The upper frame-shaped cavity 251 and the upper end of the air cavity 12 are buckled to form an air inlet cavity with a front opening.

[0058] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A single-injector overfire burner characterized by: The burner head, the fire divider seat, the circular fire cover and the outer circular fire cover, The burner head comprises a circular seat plate, an air cavity provided on the front part, a circular-arc premixing cavity provided on the rear part, a left circular-arc lower interface, a left lower air guide groove, a right circular-arc lower interface, a right lower air guide groove, a central air outlet seat and an injection pipe, the injection pipe connects the air cavity and the circular-arc premixing cavity, and the air cavity is provided with an air inlet hole; The fire divider seat comprises a cylindrical fire cover seat, a central air inlet pipe, a left circular-arc upper interface, a left upper air guide groove, a right circular-arc upper interface, a right upper air guide groove and an outer ring gas groove, the left circular-arc upper interface and the right circular-arc upper interface are connected with the outer ring gas groove, the left upper air guide groove and the right upper air guide groove are connected with the central air inlet pipe and the left circular-arc upper interface and the right circular-arc upper interface respectively and communicate with each other; the cylindrical fire cover seat is provided with a central combustion groove on the top, the outer ring gas groove comprises an outer ring combustion groove and a radial ignition groove provided on the outer ring wall plate; The central air inlet pipe communicates with the central air outlet seat, the left circular-arc upper interface, the left upper air guide groove, the right circular-arc upper interface and the right upper air guide groove are respectively buckled and sealed with the left circular-arc lower interface, the left lower air guide groove, the right circular-arc lower interface and the right lower air guide groove, and the circular fire cover and the outer circular fire cover are respectively buckled with the cylindrical fire cover seat and the outer ring gas groove.

2. A single-injector on-duct air-injection burner according to claim 1, characterized in that: The rear part of the central air outlet seat is provided with an axial positioning protrusion, and the two sides of the front part are provided with side axial protrusions, and the central air outlet seat between the side axial protrusions forms a positioning groove; The front part of the central air inlet pipe is provided with a front circular-arc plate, and the rear part is provided with a rear circular-arc plate, and the rear circular-arc plate is provided with an axial groove; The front circular-arc plate is inserted into the positioning groove, and the rear circular-arc plate is inserted into the central air outlet seat and the axial positioning protrusion and the axial groove are embedded.

3. A single-injector on-duct air-injection burner according to claim 1, characterized in that: The inner wall of the cylindrical fire cover seat is provided with at least four axial support seats, and the central combustion groove is arranged on the cylindrical fire cover seat between the two adjacent axial support seats, The central combustion groove comprises a deep central combustion groove and a shallow central combustion groove; The lower surface of the circular fire cover is provided with a circular ring groove with a lower opening, The axial support seat extends into the circular ring groove and is attached to the inner ring wall plate, the upper end supports the top plate of the circular ring groove, and the deep central combustion groove and the shallow central combustion groove are opposite to the circular ring groove.

4. A single-injector on-duct air-injection burner according to claim 1, wherein: The upper end of the outer ring gas groove is in the shape of an inverted circular truncated cone, and the outer ring combustion groove comprises a deep outer ring combustion groove and a shallow outer ring combustion groove, The outer circular fire cover is in the shape of an inverted circular truncated cone and is provided with an outer circular ring groove with a lower opening; The inner ring wall plate of the outer ring gas groove is inserted into the inner ring wall plate of the outer circular ring groove, and the top plate of the outer circular ring groove covers the upper end of the deep outer ring combustion groove and the shallow outer ring combustion groove.

5. A single-injector on-duct air-injection burner according to claim 4, characterized in that: There is a gap between the outer ring wall plate of the outer ring gas groove and the outer ring wall plate of the outer circular ring groove.

6. A single-injector on-duct air-injection burner according to claim 1, wherein: It also comprises an air inlet joint and a nozzle, the nozzle is arranged at the air outlet end of the air inlet joint, the air inlet joint is fixed with the burner head, and the nozzle extends into the air cavity.

7. A single-injector on-duct air-injection burner according to claim 1, wherein: The injection pipe is sequentially provided with a circular truncated cone compression part, a cylindrical neck part and a circular truncated cone diffusion part from the air inlet end to the air outlet end.

8. A single mixed-flow on-pipe combustion air injector as defined in claim 1, 2, 3, 4, 5, 6 or 7, characterized by: The bottom plate of the outer ring gas groove is provided with an upper frame-shaped cavity with a front opening, The upper end of the air cavity extends upward through the circular seat plate, and the front wall plate of the air cavity is provided with a front opening; The upper frame-shaped cavity and the upper end of the air cavity are buckled to form an air inlet cavity with a front opening.

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