Upper air inlet annular fire burner

Abstract

The utility model belongs to the technical field of gas cookers, and particularly discloses an upper air inlet annular fire burner which comprises a burner body, the burner body comprises a base, an annular partition piece and an annular fire cover, the annular partition piece is arranged on the upper portion of the base, and a first gas mixing cavity is formed between the base and the annular partition piece. An annular fire cover is arranged on the upper portion of the annular partition piece, a second gas mixing cavity is formed between the annular fire cover and the annular partition piece, and a plurality of gas channel openings are formed in the inner bottom face of the annular partition piece. Gas mixed in the first mixing cavity subsequently can enter the second mixing cavity from the gas channel opening to be subjected to secondary mixing operation, the two mixing cavities are arranged, air and fuel gas can be fully mixed, the yellow flame phenomenon caused by insufficient mixing of the combustor is avoided, and the combustion effect of the combustor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas cookers, in particular to an upper air inlet annular fire burner. Background Art

[0002] At present, household gas stoves generally have a burner, which usually includes an outer ring-shaped fire cover and a central ring-shaped fire cover located at the outer ring-shaped fire cover. The outer peripheries of the outer annular fire cover and the central annular fire cover are usually provided with fire holes, and the mixture of fuel gas and air flows out from the fire holes of the outer annular fire cover and the fire holes of the central annular fire cover and burns. The existing Chinese patent burner, application number: CN202320813320.3, the burner includes a flame divider and an annular fire cover buckled on the flame divider, the flame divider and the annular fire cover enclose a gas mixing chamber, a fire transfer part is provided in the annular fire cover, the fire transfer part includes a pair of fire transfer side walls extending downward from the top wall of the annular fire cover of the annular fire cover, the pair of fire transfer side walls are spaced and opposite to each other along the circumferential direction of the annular fire cover, the bottom of the pair of fire transfer side walls is against the flame divider, the top wall of the annular fire cover, the pair of fire transfer side walls and the flame divider enclose a fire transfer chamber, the fire transfer chamber extends from the inner peripheral side of the annular fire cover to the outer peripheral side and is connected with the gas mixing chamber.

[0003] The above-mentioned burner is only provided with a single mixing chamber. When the burner needs to mix the gas with the air, only a single mixing chamber is provided, which cannot ensure that the air and the gas are fully mixed, and then it will cause a yellow flame phenomenon, which will cause incomplete combustion of the burner and reduce the combustion effect of the burner. Utility Model Content

[0004] In order to overcome the defects of the prior art, the utility model provides an upper air inlet annular fire burner.

[0005] The utility model solves the technical problem by adopting the following technical solution: an upper air inlet annular fire burner, comprising a burner body, a support seat and an ejector pipe, wherein the bottom surface of the burner body is provided with a support seat, the upper part of the support seat is provided with an ejector pipe, and the air outlet end of the ejector pipe is connected with the air inlet end of the burner body;

[0006] The burner body includes a base, an annular partition and an annular fire cover, an annular partition is arranged on the upper part of the base, a first air mixing chamber is opened between the base and the annular partition, an annular fire cover is arranged on the upper part of the annular partition, a second air mixing chamber is opened between the annular fire cover and the annular partition, a plurality of air passage openings are opened on the inner bottom surface of the annular partition, the first air mixing chamber is connected with the second air mixing chamber through the air passage openings, an annular fire outlet is formed between the outer wall of the annular fire cover and the annular partition, and the annular fire outlet is connected with the second air mixing chamber.

[0007] Further description of the present scheme, the airway opening is a louver-type straight hole, and an air baffle cover is provided at the air inlet end of each airway opening, one side of the air baffle cover is provided with an air inlet, and the interior of the air baffle cover is provided with a guide portion, and one end of the guide portion transitions from the air inlet arc to the airway opening, so that the air inlet and the airway opening are connected through the guide portion.

[0008] Further description of this solution: the gas outlet end of the ejector tube extends into the first gas mixing chamber so that the ejector tube is connected to the first gas mixing chamber.

[0009] Further description of this solution: a positioning portion is provided at the upper edge of the base, the outer edge of the annular separator extends toward the inner surface of the base to form a hanging portion, and the annular separator is hung at the positioning portion of the base through the hanging portion.

[0010] Further description of this solution: a first locking boss is provided inside the burner body, a second locking boss is provided on the bottom surface of the annular fire cover, and the first locking boss and the second locking boss are engaged with each other.

[0011] Preferably, the width a of the annular fire outlet is 1 mm to 1.7 mm.

[0012] The beneficial effect of the utility model is that when the burner is working, the gas and air are first sent into the first mixing chamber through the injector tube, so that the air and the gas can be mixed for the first time. Subsequently, the gas mixed in the first mixing chamber can enter the second mixing chamber from the airway port for a secondary mixing operation, and then be discharged through the annular fire outlet. By providing two mixing chambers, it is ensured that the air and gas inside the burner can be fully mixed, and the yellow flame phenomenon caused by insufficient gas mixing during combustion of the burner can be avoided, so that the combustion effect of the burner can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The overall structure of the burner of the utility model is shown in FIG. Figure 1 ;

[0014] Figure 2 The overall structure of the burner of the utility model is shown in FIG. Figure 2 ;

[0015] Figure 3 The structure of the burner body of the utility model is shown in FIG. Figure 1 ;

[0016] Figure 4 The structure of the burner body of the utility model is shown in FIG. Figure 2 ;

[0017] Figure 5 This is a structural cross-sectional view of the burner body of the utility model;

[0018] Figure 6 for Figure 5 A structural cross-sectional view of the structure at point A;

[0019] Figure 7 This is an exploded view of the structure of the burner body of the utility model;

[0020] Figure 8 This is a schematic diagram of the combined structure of the base and the ejector tube of the utility model;

[0021] Fig. 9 It is a structural schematic diagram of the annular separator of the utility model;

[0022] Fig.10 This is a structural cross-sectional view of the annular separator of the utility model;

[0023] Fig.11 for Fig.10 The structural cross-sectional view at point B;

[0024] Fig.12 It is a structural schematic diagram of the annular fire cover of the utility model.

[0025] As shown in the figure: burner body 1, support seat 2, ejector tube 3, base 4, annular partition 5, annular fire cover 6, airway opening 7, first air mixing chamber 8, second air mixing chamber 9, annular fire outlet 10, air baffle cover 11, guide part 111, air inlet 12, positioning part 13, hanging part 14, first positioning boss 15, and second positioning boss 16. DETAILED DESCRIPTION

[0026] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] As attached Figure 1 , 2 As shown in Figures , 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12, the utility model provides an upper air inlet ring fire burner, comprising a burner body 1, a support seat 2 and an ejector tube 3. The bottom surface of the burner body 1 is provided with the support seat 2, and the upper part of the support seat 2 is provided with the ejector tube 3. The air outlet end of the ejector tube 3 is connected with the air inlet end of the burner body 1, so that the ejector tube 3 can be connected with the external gas pipeline and air pipeline, so that the gas and air can be sent into the burner body 1 through the ejector tube 3, and the burner body 1 can be supplied with gas.

[0028] The subsequent burner body 1 includes a base 4, an annular partition 5 and an annular fire cover 6. The annular partition 5 is arranged on the upper part of the base 4. A first gas mixing chamber 8 is opened between the base 4 and the annular partition 5. The annular fire cover 6 is arranged on the upper part of the annular partition 5. A second gas mixing chamber 9 is opened between the annular fire cover 6 and the annular partition 5. A plurality of air duct openings 7 are arranged on the inner bottom surface of the annular partition 5, so that the first gas mixing chamber 8 can be connected with the second gas mixing chamber 9 through the air duct openings 7. The gas outlet end of the subsequent ejector pipe 3 extends into the first gas mixing chamber 8 so that the ejector pipe 3 is connected with the first gas mixing chamber 8. An annular fire outlet 10 is formed between the outer wall of the annular fire cover 6 and the annular partition 5. The annular fire outlet 10 is connected with the second gas mixing chamber 9. The width a of the annular fire outlet 10 is 1 mm to 1.7 mm.

[0029] When the gas and air enter the burner body 1, the gas and air are first sent into the first mixing chamber 8 through the injector tube 3, so that the air and gas in the first mixing chamber 8 can be mixed for the first time, and then the mixed gas in the first mixing chamber 8 can enter the second mixing chamber 9 from the airway port 7 for a secondary mixing operation, and then be discharged through the annular fire outlet 10. By providing two mixing chambers, the air and gas in the burner can be fully mixed, and the yellow flame phenomenon caused by insufficient gas mixing during combustion of the burner can be avoided, which can improve the combustion effect of the burner.

[0030] Preferably, the opening 7 is a louver-type straight-strip hole.

[0031] As attached Figure 3 , 4 As shown in Figures 5, 6, 7, 8, 9, 10 and 11, an air baffle cover 11 is subsequently provided at the air inlet end of each airway opening 7, an air inlet 12 is opened on one side of the air baffle cover 11, a guide portion 111 is provided inside the air baffle cover 11, one end of the guide portion 111 transitions from the air inlet 12 to the airway opening 7 in an arc, so that the air inlet 12 is communicated with the airway opening 7 through the guide portion 111.

[0032] When the mixed gas in the first mixing chamber 8 needs to enter the second mixing chamber 9, it can first enter the guide portion 111 inside the air baffle cover 11 from the air inlet 12, then enter the airway opening 7, and then enter the second mixing chamber 9 through the airway opening 7;

[0033] As attached Figure 5 , 6As shown in 11, because one end of the guide portion 111 transitions from the air inlet 12 to the airway port 7 in an arc shape, when the gas enters the guide portion 111 from the air inlet 12, the mixed gas will be guided. By providing the guide portion 111 with multiple air baffle covers 11, a cyclone will be formed when the mixed gas enters the second mixing chamber 9, so that the mixed gas entering the second mixing chamber 9 can be better mixed and subsequently discharged from the annular fire outlet 10. Moreover, the mixed gas discharged from the annular fire outlet 10 can form a cyclone fire after being ignited.

[0034] As attached Figure 3 , 4 As shown in Figures 5, 6, 7, 8, 9, 10, 11 and 12, a positioning portion 13 is provided at the upper edge of the base 4, and the outer edge of the annular partition 5 extends toward the inner surface of the base 4 to form a hanging portion 14, and the annular partition 5 is hung at the positioning portion 13 of the base 4 through the hanging portion 14, so that the annular partition 5 can be quickly and tightly hung to the upper part of the base 4, and a first locking boss 15 is provided inside the base 4, and a second locking boss 16 is provided on the bottom surface of the annular fire cover 6, and the first locking boss 15 and the second locking boss 16 are clamped with each other, so that the annular fire cover 6 can be quickly and tightly hung to the inside of the base 4 through the clamping cooperation between the first locking boss 15 and the second locking boss 16.

[0035] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. An upper air inlet annular fire burner, characterized in that: It comprises a burner body (1), a support seat (2) and an ejector pipe (3), wherein the bottom surface of the burner body (1) is provided with the support seat (2), the upper part of the support seat (2) is provided with the ejector pipe (3), and the air outlet end of the ejector pipe (3) is connected to the air inlet end of the burner body (1); The burner body (1) comprises a base (4), an annular partition (5) and an annular fire cover (6); the base (4) is provided with an annular partition (5) on the top; a first gas mixing chamber (8) is provided between the base (4) and the annular partition (5); the annular fire cover (6) is provided on the top of the annular partition (5); a second gas mixing chamber (9) is provided between the annular fire cover (6) and the annular partition (5); a plurality of air passage openings (7) are provided on the inner bottom surface of the annular partition (5); the first gas mixing chamber (8) is connected to the second gas mixing chamber (9) through the air passage openings (7); and an annular fire outlet (10) is formed between the outer wall of the annular fire cover (6) and the annular partition (5).

2. The upward air inlet annular fire burner according to claim 1, characterized in that: The airway opening (7) is a louver-type straight hole, and an air baffle cover (11) is provided at the air inlet end of each airway opening (7), one side of the air baffle cover (11) is provided with an air inlet (12), and a guide portion (111) is provided inside the air baffle cover (11), and one end of the guide portion (111) transitions from the air inlet (12) to the airway opening (7) in an arc shape, so that the air inlet (12) and the airway opening (7) are connected through the guide portion (111).

3. The upward air inlet annular fire burner according to claim 1, characterized in that: The gas outlet end of the ejector tube (3) extends into the first gas mixing chamber (8), so that the ejector tube (3) is in communication with the first gas mixing chamber (8).

4. The upward air inlet annular fire burner according to claim 1, characterized in that: A positioning portion (13) is provided at the upper edge of the base (4); the outer edge of the annular partition (5) extends toward the inner surface of the base (4) to form a hanging portion (14); and the annular partition (5) is hung at the positioning portion (13) of the base (4) via the hanging portion (14).

5. The upward air inlet annular fire burner according to claim 1, characterized in that: A first locking boss (15) is provided inside the burner body (1), and a second locking boss (16) is provided on the bottom surface of the annular fire cover (6); the first locking boss (15) and the second locking boss (16) are mutually locked.

6. The upward air inlet annular fire burner according to claim 1, characterized in that: The annular fire outlet (10) is in communication with the second gas mixing chamber (9), and a width a of the annular fire outlet (10) is 1 mm to 1.7 mm.

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