A fully premixed burner

Abstract

A full premix burner includes a premix seat, a gas and air ejector seat, a gas chamber, an inner fire cover, an annular outer fire cover, a sleeve with a switchable gas hole, a gas distributor, and an adjustment drive. The premix seat includes an air inlet seat and an axial hole provided on the bottom plate; the bottom plate of the gas chamber is provided with a through hole; the adjustment drive includes a gas guide seat and a vertical shaft; the gas and air ejector seat is connected to and fixed to the air inlet seat, the gas chamber is fixed to the top of the premix seat, the annular outer fire cover is fastened to the gas chamber, and the inner fire cover is provided within the annular outer fire cover; the sleeve is fixed to the bottom plate of the gas chamber and cooperates with the through hole; the barrel portion is rotatably engaged with the sleeve and extends from the upper end of the sleeve; the gas guide seat is fixed to the gas distributor, and the vertical shaft is rotatably engaged with the axial hole; the upper end of the barrel portion corresponds to the inner fire cover. The arrangement of the gas distributor and the sleeve allows the gas distributor to rotate relative to the sleeve to adjust the power of the outer ring fire or turn it off, thereby achieving dual adjustment.

Description

Technical Field

[0001] The invention relates to a gas burner for a gas water heater or a wall-mounted boiler. Background Art

[0002] The current state of the art, according to Chinese Patent 201621262891.9, describes a fully premixed gas burner comprising a gas-air mixing chamber, a burner, a diverter plate, a spoiler, and a gas manifold. The gas-air mixing chamber has an upper opening, a support mount provided on the inner wall of the gas-air mixing chamber, and a plurality of ejector tubes provided on the bottom plate, communicating with the gas mixing chamber. The gas outlet of the ejector tubes is located within the gas-air mixing chamber. The gas manifold comprises a manifold body and an inlet tube portion perpendicular to the manifold body, the manifold body being provided with a plurality of gas injection holes. The spoiler cooperates with the gas outlet of the ejector tubes, the diverter plate is provided on the support mount, and the burner is provided on the upper opening of the gas-air mixing chamber. The gas manifold is provided at the bottom of the gas-air mixing chamber, with the gas injection holes facing the inlet of the ejector tubes. The problem is that power adjustment can only be achieved by controlling the manifold. Summary of the Invention

[0003] The purpose of the present invention is to provide a full premix burner which has the characteristics of dual regulation of gas quantity and mixed gas.

[0004] The present invention is realized as follows: a full premix burner, which is special in that it includes a premixing seat with an upper opening, a gas and air ejection seat, a gas chamber with an upper opening, an inner fire cover, an annular outer fire cover, a sleeve with a switch gas hole, a gas distributor and an adjustment drive member.

[0005] The premixing seat includes an air inlet seat and an axial hole provided on the bottom plate;

[0006] The gas distributor comprises a cylindrical body with a lower opening, an inner ring air outlet hole is provided on the top plate of the cylindrical body, and radial air outlet holes are provided on the circumferential wall plate;

[0007] The bottom plate of the gas chamber is provided with a through hole;

[0008] The adjusting drive member includes an air guide seat and a vertical shaft;

[0009] The gas and air ejector seat is connected and fixed to the air inlet seat, the gas chamber is fixed to the top of the premixing seat, the annular outer fire cover is buckled and fixed to the gas chamber, and the inner fire cover is arranged inside the annular outer fire cover; the sleeve is fixed to the bottom plate of the gas chamber and cooperates with the through hole; the cylinder body and the sleeve are rotatably matched, the gas guide seat and the gas distributor are fixed, and the vertical shaft and the shaft hole are rotatably matched; the upper end of the cylinder body corresponds to the inner fire cover.

[0010] The special feature of the full premix burner is that the cylindrical portion of the gas distributor comprises a cylindrical head and a cylindrical body, the inner ring air outlet is provided on the top plate of the cylindrical head, the radial air outlets are head air outlets and body air outlets respectively, and the circumferential wall plates of the cylindrical head and the circumferential wall plates of the cylindrical body are provided with head air outlets and body air outlets;

[0011] The sleeve comprises a head sleeve and a body sleeve, and the switch gas holes are respectively the head switch gas hole and the body switch gas hole.

[0012] The special feature of the full premix burner is that the bottom plate of the gas chamber supports the sleeve, and the cylindrical body is rotatably matched with the through hole and the sleeve.

[0013] The special feature of the full premix burner is that the sleeve passes through the through hole and is fixed to the bottom plate of the gas chamber, and the barrel portion is rotatably matched with the sleeve.

[0014] The special feature of the full premix burner is that the upper end of the cylinder extends into the inner fire cover.

[0015] The special feature of the described full premixed burner is that the air guide seat of the adjustment drive member includes an annular seat plate and a radial plate, the radial plate is right-angled and the long right-angled sides intersect, the vertical shaft is fixed to the lower end of the radial plate; the annular seat plate between two adjacent radial plates constitutes an air separation cavity.

[0016] The special feature of the fully premixed burner is that the gas-air ejector seat includes a plurality of air ejection holes and a plurality of gas pipes, the air ejection holes include an ejection part and a mixing part, the gas pipe is connected to the ejection part; the mixing part is connected to the premixing seat.

[0017] The special feature of the fully premixed burner is that the closed end of the ejector portion surrounds the mixing portion.

[0018] The special feature of the described full premix burner is that it also includes an air piece, which includes an annular seat and a tube body. The annular seat is fixed and sealed to the ejection part, the tube body extends into the mixing part or the end face of the tube body and the end face of the mixing part are in the same plane and opposite to each other, and the gap between the tube body and the mixing part constitutes an annular air-gas mixing chamber.

[0019] The special feature of the full premix burner is that the air ejection holes are distributed in a circular shape, or in two rows and several columns.

[0020] The invention provides a full premix burner, with a gas distributor and a sleeve. The gas distributor rotates relative to the sleeve to adjust the power of the outer ring fire or shut it off, thereby achieving dual regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional view of the present invention.

[0022] Figure 2 yes Figure 1 A-A view.

[0023] Figure 3 It is one of the three-dimensional exploded views of the present invention.

[0024] Figure 4 This is the second exploded perspective view of the present invention.

[0025] Figure 5 It is a perspective view of the present invention.

[0026] Figure 6 It is a partial three-dimensional exploded view of the present invention. DETAILED DESCRIPTION

[0027] 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.

[0028] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0029] like Figure 1 As shown, a full premix burner includes a premixing seat 1 with an upper opening, a gas and air ejector seat 2, a gas chamber 3 with an upper opening, an inner fire cover 4, an annular outer fire cover 5, a sleeve 6 with a switch gas hole, a gas distributor 7 and an adjustment drive 8.

[0030] The premixing seat 1 includes an air inlet seat 11 and an axial hole 12 provided on the bottom plate;

[0031] The bottom plate of the gas chamber 3 is provided with a through hole 31; the inner fire cover 4 is hollow with a lower opening and an inner combustion hole is provided on the top plate; the annular outer fire cover 5 has an annular chamber with a lower opening and an outer combustion hole provided on the top plate of the annular chamber;

[0032] The gas distributor 7 includes a cylindrical body with a lower opening, an inner ring air outlet 71 is provided on the top plate of the cylindrical body, and radial air outlet holes are provided on the circumferential wall plate;

[0033] The adjusting driving member 8 includes an air guide seat 81 and a vertical shaft 82;

[0034] The gas and air ejector seat 2 is connected and fixed to the air inlet seat 11. The gas chamber 3 is fixed to the top of the premixing seat 1. The annular outer flame cover 5 is fixedly engaged with the gas chamber 3, and the inner flame cover 4 is located within the center hole of the annular outer flame cover 5. The sleeve 6 is fixed to the bottom plate of the gas chamber 3 and engages with the through hole 31. The barrel rotates with the sleeve 6, and the upper end of the barrel extends out of the sleeve 6. The switch gas hole and the radial air outlet hole cooperate to control the gas flow or shut off. The gas guide seat 81 is fixed to the gas distributor 7, and the vertical shaft 82 rotates with the shaft hole 12. The upper end of the barrel corresponds to the inner flame cover 4. The gas distributor 7 and the adjustment drive 8 rotate together.

[0035] As a further improvement of the present invention: the cylindrical portion of the gas distributor 7 includes a cylindrical head 72 and a cylindrical body 73, the inner ring air outlet 71 is provided on the top plate of the cylindrical head 72, the radial air outlet holes are respectively head air outlet holes 741 and body air outlet holes 742, the circumferential wall plates of the cylindrical head 72 and the circumferential wall plates of the cylindrical body 73 are provided with head air outlet holes 741 and body air outlet holes 742, the head air outlet holes 741 are provided axially on the cylindrical head 72 to form a head air outlet hole group, and the head air outlet hole group has several evenly distributed on the circumference; the body air outlet holes 742 are provided axially on the cylindrical body 73 to form a body air outlet hole group, and the body air outlet hole group has several evenly distributed on the circumference of the cylindrical body 73;

[0036] The sleeve 6 includes a head sleeve 61 and a body sleeve 62, and the switch gas holes are head switch gas holes 631 and body switch gas holes 632 respectively; the head switch gas holes 631 are arranged axially on the head sleeve 61 to form a head switch gas hole group, and the head switch gas hole group has a plurality of holes evenly distributed on the circumference of the head sleeve 61; the body switch gas holes 632 are arranged axially on the body sleeve 62 to form body switch gas holes, and the body switch gas holes have a plurality of holes evenly distributed on the circumference of the body sleeve 62;

[0037] The upper end of the cylindrical head 72 extends from the upper end of the head cover 61;

[0038] The head gas outlet 741 and the body gas outlet 742 are respectively connected to the head switch gas hole 631 and the body switch gas hole 632. The gas distributor 7 rotates within the sleeve 6, and the gas distributor can close the head switch gas hole 631 and the body switch gas hole 632. The intersection area of the head gas outlet 741 and the body gas outlet 742 and the head switch gas hole 631 and the body switch gas hole 632 respectively changes to adjust the gas output, thereby adjusting the power.

[0039] As a further improvement of the present invention: the bottom plate of the combustion chamber 3 supports the sleeve 6 , and the cylindrical body 73 is rotatably matched with the through hole 31 and the body sleeve 62 of the sleeve 6 .

[0040] The sleeve 6 passes through the through hole 31 and is fixed to the bottom plate of the combustion chamber 3 , and the cylindrical body 73 is rotatably engaged with the body sleeve 62 of the sleeve 6 .

[0041] The upper end of the cylindrical head 72 extends into the inner fire cover 4.

[0042] As a further improvement of the present invention, the air guide seat 81 of the adjustment drive member 8 includes an annular seat plate 811 and a radial plate 812. The radial plate 812 is rectangular, with its long sides intersecting. The vertical shaft 82 is fixed to the lower end of the radial plate 812. The annular seat plate 811 between two adjacent radial plates 812 forms an air distribution cavity. The annular seat plate 811 is fixed to the lower open end of the cylindrical body 73.

[0043] The gas-air ejector seat 2 includes a plurality of air ejection holes and a plurality of gas pipes 21. The air ejection holes include an ejection portion 221 and a mixing portion 222. The gas pipes 21 are connected to the ejection portion 221.

[0044] The mixing portion 221 is communicated with the premixing seat 1 .

[0045] As a further improvement of the present invention, the closed end of the ejection portion 221 surrounds the mixing portion 222 .

[0046] As a further improvement of the present invention, the air piece 9 is further included. The air piece 9 includes an annular seat 91 and a tube body 92. The annular seat 91 is fixed and sealed to the ejection portion 221. The tube body 92 extends into the mixing portion 222. The gap between the tube body 92 and the mixing portion 222 constitutes an annular air-gas mixing chamber. The gap between the tube body 92 and the ejection portion 221 constitutes an annular gas chamber, which is communicated with the gas pipe 21. The tube body 92 is provided with an axial stop rib 93. When the tube body 92 is inserted into the mixing portion 222, the axial stop rib 93 cooperates with the end of the mixing portion 222 to stop it.

[0047] Or the end surface of the tube body 92 and the end surface of the mixing portion 222 are in the same plane and opposite to each other, and the gap between the tube body 92 and the mixing portion 221 forms an annular air-gas mixing chamber. The gap between the tube body 92 and the ejector portion 221 forms an annular gas chamber;

[0048] After the initial mixing of gas and air in the mixing section 222, the gas and air mixture enters the premixing seat 1 for thorough mixing. The gas and air mixture then enters the cylindrical portion of the gas distributor 7. First, it enters the inner burner cover through the top inner ring outlet 71 for combustion. Second, it enters the gas chamber 3 through the radial outlet holes and the switch gas hole on the sleeve, and finally enters the annular outer burner cover for combustion.

[0049] The air ejection holes are distributed in a circular shape.

[0050] Or the air ejection holes are distributed in two rows and three columns, and the gas pipes 21 are respectively arranged at the top and the bottom.

[0051] The present invention can control the amount of gas entering the gas-air ejector seat 2 through the gas valve, and can also adjust the power of the outer ring fire by driving the gas distributor 7 to rotate in the sleeve 6 by adjusting the driving member 8; the two can be adjusted synchronously or separately.

[0052] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A fully premixed burner, characterized in that: It includes a premixing seat with an upper opening, a gas and air ejection seat, a gas cavity with an upper opening, an inner fire cover, an annular outer fire cover, a sleeve with a switch gas hole, a gas distributor and an adjusting drive. The premixing seat includes an air inlet seat and an axial hole provided on the bottom plate; The gas distributor comprises a cylindrical body with a lower opening, an inner ring air outlet hole is provided on the top plate of the cylindrical body, and radial air outlet holes are provided on the circumferential wall plate; The bottom plate of the gas chamber is provided with a through hole; The adjusting drive member includes an air guide seat and a vertical shaft; The gas and air ejector seat is connected and fixed to the air inlet seat, the gas chamber is fixed to the top of the premixing seat, the annular outer fire cover is buckled and fixed to the gas chamber, and the inner fire cover is arranged inside the annular outer fire cover; the sleeve is fixed to the bottom plate of the gas chamber and cooperates with the through hole; the cylinder body is rotatably matched with the sleeve, and the cylinder body extends from the upper end of the sleeve, the gas guide seat is fixed to the gas distributor, and the vertical shaft is rotatably matched with the shaft hole; the upper end of the cylinder body corresponds to the inner fire cover.

2. A fully premixed burner according to claim 1, characterized in that: The cylindrical portion of the gas distributor includes a cylindrical head and a cylindrical body, the inner ring air outlet is provided on the top plate of the cylindrical head, the radial air outlet is divided into a head air outlet and a body air outlet, and the circumferential wall plate of the cylindrical head and the circumferential wall plate of the cylindrical body are provided with a head air outlet and a body air outlet; The sleeve comprises a head sleeve and a body sleeve, and the switch gas hole is divided into a head switch gas hole and a body switch gas hole.

3. A fully premixed burner according to claim 2, characterized in that: The bottom plate of the gas chamber supports the sleeve, and the cylindrical body is rotatably matched with the through hole and the sleeve.

4. A fully premixed burner according to claim 2, characterized in that: The sleeve passes through the through hole and is fixed to the bottom plate of the gas chamber, and the cylindrical body is rotatably matched with the sleeve.

5. The full premix burner according to claim 1, characterized in that: The upper end of the cylinder extends into the inner fire cover.

6. The full premix burner according to claim 1, characterized in that: The air guide seat of the adjustment drive member includes an annular seat plate and a radial plate. The radial plate is right-angled and the long right-angled sides intersect. The vertical shaft is fixed to the lower end of the radial plate. The annular seat plate between two adjacent radial plates constitutes an air distribution cavity.

7. The full premix burner according to claim 1, characterized in that: The gas-air ejector seat comprises a plurality of air ejection holes and a plurality of gas pipes. The air ejection holes comprise an ejection portion and a mixing portion. The gas pipe is communicated with the ejection portion; and the mixing portion is communicated with the premixing seat.

8. The full premix burner according to claim 7, characterized in that: The closed end of the ejection portion surrounds the mixing portion.

9. The full premix burner according to claim 7, characterized in that: It also includes an air piece, which includes an annular seat and a tube body. The annular seat is fixed and sealed to the ejection part. The tube body extends into the mixing part or the end face of the tube body and the end face of the mixing part are in the same plane and opposite to each other. The gap between the tube body and the mixing part constitutes an annular air-gas mixing chamber.

10. A full premix burner according to claim 7, 8 or 9, characterized in that: The air ejection holes are distributed in a circular shape, or in two rows and several columns.

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