Center direct injection type burner

Abstract

A center direct injection type combustor comprises a furnace end, a fire distributor base, a center annular fire cover, an outer ring fire cover and a direct injection combustion pipe, and the furnace end comprises an injection pipe, a premixing cavity, a base plate, a longitudinal supporting plate, an ignition base, an induction needle base, a transverse base plate and a direct injection gas outlet base arranged on the transverse base plate, the fire distributor seat comprises a central annular fuel gas groove with an upper opening, an outer ring fuel gas groove, three radial plates, a direct injection injection pipe and a gas inlet joint, an outer connector of the premixing cavity is inserted into an inner connector of the gas inlet joint, the premixing cavity supports the gas inlet joint, and a direct injection gas outlet seat supports a bottom plate of the outer ring fuel gas groove; the direct injection combustion pipe is connected with the gas outlet end of the direct injection injection pipe, gaps are formed between the direct injection combustion pipe and an axis hole of the center annular gas groove and between the direct injection combustion pipe and a cover axis hole of the center annular fire cover, and the direct injection injection pipe is opposite to an injection seat of the direct injection gas outlet seat. The burner is simple in structure, low in material consumption and low in cost; and the premixing cavity and the gas inlet joint are fan-shaped, so that the identification and the assembly are convenient, and the relative rotation of the distributor seat and the furnace end can be prevented.

Description

Technical Field

[0001] The utility model relates to a cooking burner. Background Art

[0002] In the current prior art, Chinese Patent No. 202211570074.X discloses a burner and a cooking stove. The burner includes a burner body and a nozzle seat. The burner body includes a burner head, an outer ring ejector pipe, an inner ring ejector pipe and a direct injection pipeline respectively connected to the burner head; the nozzle seat is connected to the burner body, and the nozzle seat has a first air inlet, a first air outlet, a second air inlet, a second air outlet and a third air outlet. The outer ring ejector pipe is communicated with the first air outlet, the inner ring ejector pipe is communicated with the second air outlet, and the direct injection pipeline is communicated with the third air outlet; wherein, the first air inlet, the first air outlet and the third air outlet are communicated to simultaneously ignite or extinguish the outer ring flame and the direct injection flame by controlling the opening and closing of the first air inlet. The problems are: the structure is complex, double ejector pipes are required, and relative rotation of components on the burner head cannot be prevented. Content of the Utility Model

[0003] The purpose of the utility model is to provide a central direct injection burner, which has the characteristics of simple structure, convenient assembly and can prevent relative rotation between the fire divider seat and the burner head.

[0004] The utility model is realized as follows: a central direct injection burner, which is characterized in that it includes a burner head, a fire divider seat, a central circular fire cap, an outer ring fire cap and a direct injection combustion pipe.

[0005] The burner head includes an ejector pipe, a premixing chamber, a seat plate, a longitudinal support plate, ignition seats and induction needle seats arranged left and right, a transverse seat plate and a direct injection air outlet seat arranged on the transverse seat plate. The seat plate surrounds the upper part of the premixing chamber. The premixing chamber, the seat plate, the longitudinal support plate, the ignition seats, the induction needle seats, the transverse seat plate and the direct injection air outlet seat are integrally formed. The ejector pipe is communicated with and fixed to the premixing chamber; an external interface is provided at the upper end of the premixing chamber, and the premixing chamber is fan-shaped.

[0006] The fire divider seat includes a central circular ring-shaped gas groove with an upper opening, an outer ring gas groove, three radial plates, a direct injection ejector pipe and an air inlet joint. The air inlet joint is communicated with the central circular ring-shaped gas groove and the outer ring gas groove. The direct injection ejector pipe is fixed to the radial plate and the outlet end is located inside the lower end of the axis hole of the central circular ring-shaped gas groove; the air inlet joint is fan-shaped.

[0007] The external interface is inserted into the internal interface of the air inlet joint. The premixing chamber supports the air inlet joint, and the direct injection air outlet seat supports the bottom plate of the outer ring gas groove; the direct injection combustion pipe is connected to the outlet end of the direct injection ejector pipe and has a gap with the axis hole, and the injection seats of the direct injection ejector pipe and the direct injection air outlet seat are opposite to each other.

[0008] Preferably, the radial plates are respectively arranged at the rear, left and right.

[0009] The ignition seat and the induction needle seat are located on both sides of the radial plate at the rear.

[0010] Preferably: A support column seat is provided on the transverse seat plate.

[0011] A fixed seat is provided on one side of the direct injection ejector tube, and the support column seat supports the fixed seat and is fixed with screws.

[0012] Preferably: The air inlet joint is provided at the bottom of the central circular gas groove and the outer ring gas groove, and the inner cavity of the air inlet joint penetrates through the bottom plates of the outer ring gas groove and the central circular gas groove and forms an outer ring air inlet hole and a central air inlet hole.

[0013] Preferably: A central circular arc deflector is provided on the outer ring wall plate of the central circular gas groove and is opposite to the central air inlet hole, and an outer circular arc deflector is provided on the outer ring wall plate of the outer ring gas groove and is opposite to the outer ring air inlet hole.

[0014] Preferably: The central circular arc deflector is connected to the inner ring wall plate and the outer ring wall plate of the central circular burner cap seat and is provided with a central axial air guide hole;

[0015] The outer circular arc deflector is fixed to the inner ring wall plate and the outer ring wall plate of the outer ring gas groove and is provided with an outer ring axial air guide hole.

[0016] Preferably: An air inlet interface and fixed seats on the left and right sides are provided on the arc-shaped surface of the premixing chamber;

[0017] The outlet end of the ejector tube is provided with an outer interface, a circular flange surrounding the outer interface, and a connecting seat provided on the circular flange; the circular flange is provided with an annular insertion groove;

[0018] The outer interface is inserted into the air inlet interface, the air inlet interface is inserted into the annular insertion groove, and screws pass through the connecting seat and are screwed with the fixed seat.

[0019] For a central direct injection burner of the present utility model, the burner head has a simple structure, uses less materials, and has a low cost; the premixing chamber and the air inlet joint are fan-shaped, which is convenient for identification and assembly, and can prevent the burner cap seat and the burner head from rotating relative to each other. Brief Description of the Drawings

[0020] Figure 1 is one of the three-dimensional exploded views of the present utility model.

[0021] Figure 2 is the second three-dimensional exploded view of the present utility model.

[0022] Figure 3 is the top view of the present utility model.

[0023] Figure 4 is Figure 3 the A - A view of

[0024] Figure 5 This is a perspective view of the fire distributor base of this utility model.

[0025] Figure 6 This is a cross-sectional view of the fire distributor seat of this utility model.

[0026] Figure 7 This is a three-dimensional sectional view of the fire distributor seat of this utility model. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] like Figure 1 , Figure 2 As shown, a center-injection burner includes a burner head 1, a flame distributor seat 2, a hollow, lower-opening central annular flame cap 3, an outer annular flame cap 4, and a direct-injection combustion tube 5.

[0030] The burner head 1 includes an injector tube 11, a premixing chamber 12, a seat plate 13, a longitudinal support plate 14, ignition needle seats 151 and induction needle seats 152 arranged on the left and right ends of the longitudinal support plate, a horizontal seat plate 16, and a direct injection gas seat 17 arranged on the horizontal seat plate 16. The seat plate 13 surrounds the upper part of the premixing chamber 12. The premixing chamber 12, seat plate, longitudinal support plate 14, ignition needle seats 151 and induction needle seats 152, horizontal seat plate 16, and direct injection gas seat 17 are integrally formed. The front part of the longitudinal support plate 14 is connected to the seat plate 13, and the horizontal seat plate 16 is located on the left or right side of the longitudinal support plate 14. The injector tube 11 and the premixing chamber 12 are connected and fixed. The upper end of the premixing chamber 12 is provided with an external interface, and the premixing chamber 12 is fan-shaped. The burner head adopts a structure and layout that simplifies the structure, reduces material usage, reduces costs, and has a simple mold structure. The fan-shaped premixing chamber 12 has supporting capacity and effectively prevents deformation.

[0031] The fire divider base 2 includes a central circular ring-shaped gas groove 21 with an upper opening, an outer ring gas groove 22, three radial plates 23, a direct injection ejector tube 24, and an air inlet joint 25. The air inlet joint 25 is connected and communicates with the central circular ring-shaped gas groove 21 and the outer ring gas groove 22. The direct injection ejector tube 24 is fixed to one radial plate 23 and its air outlet end is located inside the lower end of the axis hole 211 of the central circular ring-shaped gas groove 21; the air inlet joint 25 is fan-shaped;

[0032] The outer interface of the premixing chamber 12 is inserted into the inner interface of the air inlet joint 25. The premixing chamber 12 supports the air inlet joint 25, and the direct injection air outlet seat 17 supports the bottom plate of the outer ring gas groove 22; the direct injection combustion tube 5 is connected to the air outlet end of the direct injection ejector tube 24 and there is a gap between it and the axis hole 211 and the cover axis hole 31 of the central circular ring-shaped burner cap 3. The nozzles on the direct injection ejector tube 24 and the direct injection air outlet seat 17 face each other. Since both the premixing chamber 12 and the air inlet joint 25 are fan-shaped, it is convenient to identify and assemble; it can also prevent the relative rotation of the fire divider base and the burner head.

[0033] As a further improvement of the present utility model: As Figure 3 shown, the radial plates 23 are respectively arranged at the rear, left, and right;

[0034] The ignition seat 151 and the induction needle seat 152 are located on both sides of the radial plate 23 at the rear.

[0035] As a further improvement of the present utility model: The cross seat plate 16 is provided with a support column seat 161,

[0036] One side of the direct injection ejector tube 24 is provided with a fixed seat 241. The support column seat 161 supports the fixed seat 241 and is fixed with screws. With such a structure, it can prevent the deformation of the fire divider base.

[0037] As a further improvement of the present utility model: As Figure 6 、 Figure 7 shown, the air inlet joint 25 is arranged at the bottom of the central circular ring-shaped gas groove 21 and the outer ring gas groove 22. The inner cavity of the air inlet joint 25 penetrates through the bottom plates of the outer ring gas groove 22 and the central circular ring-shaped gas groove 21 and forms an outer ring air inlet hole and a central air inlet hole.

[0038] As a further improvement of the present utility model: The outer ring wall plate of the central circular ring-shaped gas groove 21 is provided with a central circular arc-shaped deflector plate 212 and is opposite to the central air inlet hole. The outer ring wall plate of the outer ring gas groove 22 is provided with an outer circular arc-shaped deflector plate 221 and is opposite to the outer ring air inlet hole.

[0039] The central circular arc-shaped deflector plate 212 is connected to the inner ring wall plate and the outer ring wall plate of the central circular ring-shaped burner cap seat 21 and is provided with a central axial air guide hole;

[0040] The outer arc-shaped guide plate 221 is fixed to the inner and outer ring walls of the outer ring gas tank 22 and is provided with an outer ring axial guide hole.

[0041] As a further improvement of this utility model: the premixing chamber 12 is provided with an air inlet 121 and a fixing seat 122 located on the left and right sides on the arc-shaped surface;

[0042] The outlet end of the ejector tube 11 is provided with an external interface 111, a circular flange 112 surrounding the external interface 111, and a connecting seat 113 provided on the circular flange; the circular flange is provided with an annular insertion groove.

[0043] The external interface 111 is inserted into the air intake interface 121, the air intake interface 121 is inserted into the annular insertion groove 1121, and the screw passes through the connector 113 and engages with the fixing seat 122.

[0044] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A center-injection burner, characterized in that: Includes the burner head, burner seat, central annular flame cap, outer annular flame cap, and direct injection combustion tube. The burner head includes an ejector tube, a premixing chamber, a seat plate, a longitudinal support plate, ignition seats and induction needle seats arranged on the left and right, a horizontal seat plate, and a direct injection gas seat on the horizontal seat plate. The seat plate surrounds the upper part of the premixing chamber. The premixing chamber, seat plate, longitudinal support plate, ignition seats and induction needle seats, horizontal seat plate, and direct injection gas seat are integrally formed. The ejector tube and the premixing chamber are connected and fixed. The upper end of the premixing chamber is provided with an external interface, and the premixing chamber is fan-shaped. The ignition distributor base includes a central annular gas groove with an upper opening, an outer annular gas groove, three radial plates, a direct injection tube, and an air inlet connector. The air inlet connector is connected to the central annular gas groove and the outer annular gas groove. The direct injection tube is fixed to the radial plates and its outlet end is located inside the lower end of the axial hole of the central annular gas groove. The air inlet connector is fan-shaped. The outer interface of the premixing chamber is inserted into the inner interface of the air inlet connector. The premixing chamber supports the air inlet connector, and the direct injection outlet seat supports the bottom plate of the outer ring gas tank. The direct injection combustion pipe is connected to the outlet end of the direct injection ejector pipe and has a gap with the axis hole of the central annular gas tank and the cover axis hole of the central annular flame cap. The nozzles of the direct injection ejector pipe and the direct injection outlet seat are opposite each other.

2. A center-direct injection burner according to claim 1, characterized in that: The radial plates are respectively located at the rear, left, and right sides; The ignition socket and the induction needle socket are located on both sides of the radial plate at the rear.

3. A center-direct injection burner according to claim 1, characterized in that: The horizontal plate is equipped with a support column base. A fixed seat is provided on one side of the direct injection tube, and a support column supports the fixed seat and is fixed with screws.

4. A center-direct injection burner according to claim 1, characterized in that: The air inlet connector is located at the bottom of the central annular gas groove and the outer annular gas groove. The inner cavity of the air inlet connector passes through the bottom plate of the outer annular gas groove and the central annular gas groove, forming the outer annular air inlet and the central air inlet.

5. A center-direct injection burner according to claim 1, characterized in that: The outer ring wall of the central annular gas tank is provided with a central arc-shaped guide plate opposite to the central air inlet, and the outer ring wall of the outer annular gas tank is provided with an outer arc-shaped guide plate opposite to the outer annular air inlet.

6. A center-injection burner according to claim 5, characterized in that: The central arc-shaped guide plate is connected to the inner and outer ring walls of the central annular fire cap seat and is provided with a central axis guide air hole. The outer arc-shaped guide plate is fixed to the inner and outer ring walls of the outer ring gas tank and is provided with an outer ring axial guide hole.

7. A center-direct injection burner according to claim 1, 2, 3, 4, 5 or 6, characterized in that: The premixing chamber has an air inlet and fixed seats on the left and right sides on its arc-shaped surface. The ejector tube has an external interface, a circular flange surrounding the external interface, and a connecting seat on the circular flange; the circular flange has an annular insertion groove. The external interface is inserted into the air intake interface, the air intake interface is inserted into the annular plug groove, and the screw passes through the connector and engages with the fixed base.

Images