Upper-air-inlet single-injection-pipe combustor

Abstract

An upper air inlet single-injection-pipe burner comprises a furnace end, a fire distributor seat, a center fire cover and an outer ring fire cover, the furnace end comprises a seat plate, an air inlet seat, an air outlet seat, a lower frame-shaped seat with a front opening and a cylindrical seat with an upper opening, and the air inlet seat and the air outlet seat are arranged at the front end of the seat plate. The distributor base comprises a central fire cover base, a connector, an outer ring gas groove, an air cavity formed in the front end of the outer ring gas groove, an upper frame-shaped base with a front opening and an injection pipe, the front end of the injection pipe is communicated with the air cavity, the rear end of the injection pipe is communicated with a premixing cavity of the outer ring gas groove, and the middle of the injection pipe penetrates through the central fire cover base and is communicated with the central fire cover base; the connector is inserted into the cylindrical seat, the cylindrical seat supports the central fire cover seat, the upper frame-shaped seat and the lower frame-shaped seat are in butt joint and are communicated with the air cavity and the injection cavity, and the air outlet seat extends into the injection cavity. The distributor base is made of metal materials in a die-casting and integrated mode and has the advantages of being high in integrity and eliminating hidden danger of gas leakage.

Description

Technical Field

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

[0002] The current existing technology, Chinese patent 202410701167.4, is a top air inlet burner and stove. The top air inlet burner includes a mounting seat, an outer ring nozzle and a burner body, the outer ring nozzle is mounted on the mounting seat; the burner body is arranged on the mounting seat, and a mixing chamber and an outer ring chamber arranged circumferentially around the mixing chamber are provided in the burner body, and the outer ring chamber is connected to the outer ring fire outlet; a plurality of outer ring gas channels are also provided between the mixing chamber and the outer ring chamber, and the plurality of outer ring gas channels are evenly spaced along the circumference of the mixing chamber, and both ends of each outer ring gas channel are connected to the outer ring chamber and the mixing chamber, and the outlet of the outer ring nozzle is connected to the mixing chamber through the outer ring ejector. The problem is that the fire cover upper cover and the fire cover base are composed of two parts, which need to be assembled together and sealed; there is a hidden danger of gas leakage. Utility Model Content

[0003] The purpose of the utility model is to provide a top air inlet single ejector tube burner, which has the characteristics of an ignition distributor seat being integrally formed and having high sealing performance.

[0004] The utility model is realized as follows: a top air inlet single ejector tube burner, which is special in that it includes a burner head, a fire distributor seat, a central fire cover and an outer ring fire cover,

[0005] The burner head includes a base plate, an air inlet seat and an air outlet seat at the front end of the base plate, a lower frame seat with a front opening, a cylindrical seat with an upper opening, an ignition needle fixing hole and an induction needle fixing hole.

[0006] The ignition distributor seat includes a central fire cover seat, an interface, an outer ring gas groove, an air cavity provided at the front end of the outer ring gas groove, an upper frame seat with a front opening, and an ejector tube. The front end of the ejector tube is connected to the air cavity, the rear end is connected to the premixing cavity of the outer ring gas groove, and the middle part passes through the central fire cover seat and is connected to the central fire cover seat.

[0007] The interface is inserted into the cylindrical seat, the cylindrical seat supports the central fire cover seat, the upper frame seat and the lower frame seat are butted against each other and connected with the air cavity and the ejection cavity, and the air outlet seat extends into the ejection cavity.

[0008] The special feature of the upper air inlet single ejector tube burner is that the ignition distributor seat is made of die-cast metal material.

[0009] The special feature of the upper air inlet single ejector tube burner is that it also includes an arc-shaped guide plate, which is arranged on the radial outer edge of the premixing chamber outlet and is opposite to the outlet end of the ejector tube.

[0010] The special feature of the upper air inlet single ejector tube burner is that the inner cavity of the ejector tube includes a front mixing chamber and a rear mixing chamber, the diameter of the front mixing chamber is larger than the diameter of the rear mixing chamber, the front mixing chamber is connected to the central fire cover seat, and the rear mixing chamber is connected to the premixing chamber.

[0011] The special feature of the upper air inlet single ejector tube burner is that the air inlet end of the rear mixing chamber extends into the front mixing chamber and expands.

[0012] The special feature of the upper air inlet single ejector tube burner is that side air outlet holes are provided on both sides of the rear portion of the ejector tube located in the central fire cover seat.

[0013] The special feature of the top air inlet single ejector tube burner is that limiting plates are provided on both side walls of the air cavity, and the air outlet seat is located between the limiting plates.

[0014] The utility model discloses a top air inlet single ejector tube burner. The ignition distributor seat is made of metal material by die-casting and is integrally formed. The burner has the characteristics of strong integrity and can eliminate the hidden danger of air leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the present utility model.

[0016] Figure 2 yes Figure 1 A-A view.

[0017] Figure 3 yes Figure 2 B-B view.

[0018] Figure 4 It is a three-dimensional sectional view of the fire distributor seat of the present invention.

[0019] Figure 5 This is one of the three-dimensional exploded views of the present invention.

[0020] Figure 6 This is the second three-dimensional exploded view of the present invention. DETAILED DESCRIPTION

[0021] The following describes embodiments of the present invention in detail. 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0023] like Figure 1 As shown, a burner with a single ejector tube 26 on the upper air inlet comprises a burner head 1, a fire distributor seat 2, a central fire cover 3 and an outer ring fire cover 4.

[0024] The burner 1 includes a base plate 11, an air inlet seat 121 and an air outlet seat 122 located at the front end of the base plate, a lower frame-shaped seat 13 with a front opening, a cylindrical seat 14 with an upper opening, and an ignition needle fixing hole 151 and a sensor needle fixing hole 151. The air outlet seat 122 and the air inlet seat 121 are respectively located on the upper and lower surfaces of the base plate 11 and are connected. The cylindrical seat 14 can be round or square.

[0025] The ignition distributor seat 2 includes a central fire cover seat 21, an interface 22, an outer ring gas groove 23, an air cavity 24 provided at the front end of the outer ring gas groove 23, an upper frame-shaped seat 25 with a front opening, and an ejector tube 26. The front end of the ejector tube 26 is connected to the air cavity 24, the rear end is connected to the premixing chamber 27 of the outer ring gas groove 23, and the middle part passes through the central fire cover seat 21 and is connected to the central fire cover seat 21; the diameter of the central fire cover seat is larger than the interface of the interface 22; the interface 22 can be round or square;

[0026] The interface 22 is inserted into the cylindrical seat 14, the cylindrical seat 14 supports the central fire cover seat 21, the upper frame seat 25 is docked with the lower frame seat 13 and connected to the injection cavity with the air cavity 24, and the air outlet seat 122 extends into the injection cavity.

[0027] The ignition distributor seat 2 is made of metal material by die-casting, such as copper or aluminum; the ejector tube blank is made by die-casting, and then the ejector tube is made by drilling.

[0028] As a further improvement of the present invention, the invention further includes an arc-shaped guide plate 28, which is located at the radially outer edge of the gas outlet of the premixing chamber 27 and opposite the gas outlet end of the ejector tube 26. A gap is created between the arc-shaped guide plate 28 and the outer ring wall of the outer ring gas groove. The arc-shaped guide plate 28 serves to slow down and divert the flow.

[0029] As a further improvement of the present invention: Figure 2 、 Figure 3As shown, the inner cavity of the ejector tube 26 includes a front mixing chamber 261 and a rear mixing chamber 262. The diameter of the front mixing chamber 261 is larger than that of the rear mixing chamber 262. The front mixing chamber 261 is connected to the central fire cover seat 21, and the rear mixing chamber 262 is connected to the premixing chamber 27.

[0030] The air inlet end of the rear mixing chamber 262 extends into the front mixing chamber 261 and expands.

[0031] As a further improvement of the present invention: when the cylindrical seat and the interface are circular, limit plates 241 are provided on both side walls of the air cavity 24, and the air outlet seat 122 is located between the limit plates 241. With such a structure, the ignition distributor seat 2 can be prevented from rotating relative to the burner head 1.

[0032] As a further improvement of the present invention, the ejector tube 26 is provided with side air outlets 263 on both sides of the rear portion of the central fire cover seat 21 , and the ejector tube 26 is communicated with the central fire cover seat 21 through the side air outlets 263 .

[0033] 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 purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A top-inlet single-ejector burner, characterized by: Including burner head, fire distributor seat, center fire cover and outer ring fire cover, The furnace head includes a base plate, an air inlet seat and an air outlet seat at the front end of the base plate, a lower frame seat and a cylindrical seat with an upper opening. The ignition distributor seat includes a central fire cover seat, an interface, an outer ring gas groove, an air cavity provided at the front end of the outer ring gas groove, an upper frame seat with a front opening, and an ejector tube. The front end of the ejector tube is connected to the air cavity, the rear end is connected to the premixing cavity of the outer ring gas groove, and the middle part passes through the central fire cover seat and is connected to the central fire cover seat. The interface is inserted into the cylindrical seat, the cylindrical seat supports the central fire cover seat, the upper frame seat and the lower frame seat are connected and connected with the air cavity to the injection cavity, and the air outlet seat extends into the injection cavity.

2. The top-inlet single-ejector burner according to claim 1, characterized in that: The ignition distributor seat is made of metal material by die-casting.

3. The top-inlet single-ejector burner according to claim 1, characterized in that: It also includes an arc-shaped guide plate, which is arranged on the radial outer edge of the premixing chamber air outlet and is opposite to the air outlet end of the ejector pipe.

4. The top-inlet single-ejector burner according to claim 1, characterized in that: The inner cavity of the ejector tube includes a front mixing cavity and a rear mixing cavity. The diameter of the front mixing cavity is larger than that of the rear mixing cavity. The front mixing cavity is connected to the central fire cover seat, and the rear mixing cavity is connected to the premixing cavity.

5. The top-inlet single-ejector burner according to claim 4, characterized in that: The air inlet end of the rear mixing chamber extends into the front mixing chamber and expands.

6. The top-inlet single-ejector burner according to claim 1, characterized in that: The ejector tube is located in the center fire cover seat and has side air outlets on both sides of the rear portion.

7. The top-inlet single-ejector burner according to claim 1, characterized in that: Limiting plates are provided on both side walls of the air cavity, and the air outlet seat is located between the limiting plates.

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