CN106765093B

CN106765093B - A kind of burner

Info

Publication number: CN106765093B
Application number: CN201611245108.2A
Authority: CN
Inventors: 熊斌; 张波; 茅忠群; 诸永定; 蔡国汉
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2016-12-29
Filing date: 2016-12-29
Publication date: 2022-10-21
Anticipated expiration: 2036-12-29
Also published as: CN106765093A

Abstract

The invention discloses a burner, which comprises a base, a gas inlet channel, a primary air inlet channel and a gas mixing device positioned above the base, wherein a mixed gas channel communicated with the gas inlet channel and the primary air inlet channel is formed in the gas mixing device, and the burner is characterized in that: the gas mixing device comprises a base, and is characterized by further comprising a cyclone device which is rotatably supported on the base, wherein the cyclone device is in a hollow cylindrical shape with an upper opening and a lower opening and is positioned on the periphery of the gas mixing device, an air inlet is formed in the peripheral wall of the cyclone device to form a secondary air inlet channel, the secondary air inlet channel is positioned above the gas mixing device, and a combustion area is formed in the cyclone device and above the gas mixing device. Through setting up rotatable cyclone for peripheral air is by the internal suction after with flame contact and make the flame height draw high, let the gas combustion more abundant and improve the flame height, thereby concentrated flame can improve heat exchange intensity greatly and effectively improve heat exchange efficiency.

Description

A kind of burner

Technical Field

The invention relates to kitchen equipment, in particular to a burner for a household gas cooker.

Background

The gas stove is a common kitchen tool in daily life, and is mainly divided into a stove using liquefied combustible gas as fuel for combustion, wherein the liquefied combustible gas can be natural gas, liquefied gas, methane and the like, and the gas stove can be divided into various kinds, such as a liquefied gas stove, a natural gas stove and the like, according to different kinds of the liquefied combustible gas. Of course, gas stoves can also be classified into single stoves, double stoves, single-hole stoves, multi-hole stoves, table-top embedded stoves, etc. according to their structure.

The burner is an important part of a gas stove, for example, the burner of a gas stove with upper air inlet disclosed in the Chinese patent with the application number of 200610122586.4 comprises an outer fire cover, an outer ring fire cover seat, a chassis and a burner with a guiding jet pipe which are sequentially arranged from top to bottom, wherein the center of the chassis is provided with an annular center fire cover seat matched with the center fire cover; also like the burner disclosed in the chinese patent No. 201410719979.8, the burner comprises a burner head seat and a distributor, wherein a central fire cover is arranged on the distributor, an outer ring fire cover is arranged on the periphery of the central fire cover and is also arranged on the distributor, and the central fire cover and the outer ring fire cover are both communicated with the inside of the distributor.

The existing burner structures are difficult to achieve small size and high power, air is injected by the self energy of fuel gas sprayed by the nozzle, the injection capacity of primary air is very limited, and more secondary air is needed; in addition, the existing burner has the defects of insufficient combustion, low general efficiency and high flue gas emission because the flame is less in contact with air and a large area is arranged in the center of the flame without air.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a burner capable of improving heat exchange efficiency, aiming at the problems existing in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a combustor, includes base, gas inlet channel, primary air inlet channel and the gas that is located the base top mixes the gas device, the gas mixes and is formed with the mist passageway that communicates with gas inlet channel and primary air inlet channel in the gas device, its characterized in that: the combustor also comprises a cyclone device which is rotatably supported on the base, the cyclone device is in a hollow cylindrical shape with an upper opening and a lower opening and is positioned on the periphery of the gas mixing device, an air inlet is formed in the peripheral wall of the cyclone device to form a secondary air inlet channel, the secondary air inlet channel is positioned above the gas mixing device, and a combustion area is formed in the cyclone device and above the gas mixing device.

In order to enable the cyclone device to drive air to rotate to form ascending cyclones when rotating, the pressure of a primary air inlet channel is increased, the amount of primary air entering the injection pipe is further increased, and sufficient combustion is guaranteed, a plurality of blades are arranged on the inner side of the peripheral wall of the cyclone device and above the air inlet and are arranged at intervals along the circumferential direction.

Preferably, in order to ensure that the cyclone forming effect is good and flame combustion is not influenced, the width of the blade is 4 mm-6 mm, and the height of the blade is 6 mm-12 mm.

Preferably, primary air inlet channel and gas inlet channel's structure does, the base includes base and gas pipe, the base is upper and lower open-ended cavity form, the gas pipe stretches to in the base and buckles and upwards extend from the base is extended outward, form in the gas pipe gas inlet channel, the part that encircles the gas pipe periphery in the base forms primary air inlet channel, the top that the gas pipe is located the base part is provided with the nozzle.

Preferably, the cyclone device is driven by a motor and is driven by a gear, the base further comprises a support frame extending outwards from the base, the support frame is provided with the motor, an output shaft of the motor is provided with a first gear, the base is cylindrical, the bottom of the cyclone device is rotatably supported on the periphery of the base, and the periphery of the cyclone device is provided with a second gear meshed with the first gear.

In order to guide the gas and the air to enter and fully mix, the gas mixing device comprises a gas mixing chamber with an upper opening and an injection pipe which is positioned below the gas mixing chamber and communicated with the gas mixing chamber, and the injection pipe is positioned above the nozzle.

In order to enhance the introduction capacity of fuel gas and air, the lower part of the injection pipe is a bell mouth with a large lower part and a small upper part.

In order to form a flame generator with a wider power range, a fuel gas guiding device is arranged in the gas mixing chamber, and the part of the gas mixing chamber, which surrounds the periphery of the fuel gas guiding device, forms the mixed gas channel.

In order to guide the fuel gas and the air, the fuel gas flow guide device comprises a flow guide column which is supported in the gas mixing chamber in a hanging manner, the bottom surface of the flow guide column is a flow guide surface which is gradually inclined downwards from the periphery to the middle, and the middle of the flow guide surface is opposite to the injection pipe.

In order to effectively decelerate the mixed gas flowing at high speed so as to prevent fire escape and backfire during combustion, an annular groove is formed on the peripheral wall of the flow guide column above the flow guide surface, and the gap between the peripheral wall edge of the part of the flow guide column below the groove and the side wall of the gas mixing chamber is smaller than the gap between the peripheral wall edge of the part of the flow guide column above the groove and the side wall of the gas mixing chamber.

Compared with the prior art, the invention has the advantages that: through setting up rotatable cyclone for peripheral air is by the internal suction after with flame contact and make the flame height draw high, let the gas combustion more abundant and improve the flame height, thereby concentrated flame can improve heat exchange intensity greatly and effectively improve heat exchange efficiency, effectively miniaturize the combustor under the equal power condition.

Drawings

FIG. 1 is a schematic view of the structure of the burner of the present invention;

FIG. 2 is an exploded view of the burner of the present invention;

FIG. 3 is a schematic view of the base of the burner of the present invention;

FIG. 4 is a schematic view of a gas guide device of the burner of the present invention

Fig. 5 is a cross-sectional view of the burner of the present invention with the valve stem depressed.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

Referring to fig. 1 to 5, a burner includes a base 1, a gas mixing device 2 disposed on the base 1, a gas guiding device 3 disposed in the gas mixing device 2, a cyclone device 4 disposed on the base 1 and located at the periphery of the gas mixing device 2, and a nozzle 5.

Wherein, base 1 includes base 11, gas pipe 12 and support frame 13, and base 11 is the cylindric of upper and lower open-ended, and gas pipe 12 transversely extends, includes the horizontal part 121 that extends into base 11 from base 11 outside to the terminal to and be located the terminal bending upward vertical portion 122 that forms that extends of base 11 from horizontal part 121, and above-mentioned nozzle 5 sets up the last port at vertical portion 122 of gas pipe 12 promptly. Whereby a portion of the base 11 surrounding the outer periphery of the vertical portion 122 of the gas guide 12 forms a primary air intake passage Q1, and a gas intake passage Q2 is formed in the gas guide 12.

The supporting frames 13 are used for fixing the base 1 to the cooking bench, in this embodiment, the number of the supporting frames 13 is three, and the supporting frames 13 are formed by extending the side walls of the base 11 outwards, one of the supporting frames 13 is provided with the motor 7, and the output shaft of the motor 7 is provided with the first gear 71.

The upper end of base 11 upwards extends and is formed with a plurality of support columns 111, and gas mixing device 2 passes through support column 111 and sets up in base 11 top, and support column 111 and gas mixing device 2 accessible screw fixation. The gas mixing device 2 comprises a gas mixing chamber 21 and an injection pipe 22 which is positioned below the gas mixing chamber 21 and communicated with the gas mixing chamber 21. The gas mixing chamber 21 is open at the top and hollow, and the gas guiding device 3 is arranged in the gas mixing chamber 21. The gas guiding device 3 is smaller than the gas mixing chamber 21, and a mixed gas channel Q3 is formed in the gas mixing chamber 21 and around the periphery of the gas guiding device 3. The diameter of the gas mixing chamber 21 is preferably 35 mm-50 mm, the gas mixing device 2 is matched with the gas guiding device 3 to form a flame generator, the power range can be 3.5 kw-20 kw, and the reasonable structural size design of the household stove burner can be carried out within 5.2 kw. The injection pipe 22 is arranged below the gas mixing chamber 21, and the bottom of the gas mixing chamber 21 is opened so as to be communicated with the injection pipe 22. The lower part of the injection pipe 22 is preferably a bell mouth with a large lower part and a small upper part, the position of the injection pipe 22 corresponds to the position of the nozzle 5 and is positioned above the nozzle 5, and the cross section of the injection pipe 22 is larger than that of the nozzle 5, so that the injection pipe 22 can simultaneously introduce fuel gas and air.

The gas guiding device 3 includes a guiding column 31 and three supporting legs 32, the guiding column 31 may be cylindrical, and the supporting legs 32 may include a plurality of supporting legs arranged at intervals at the bottom of the guiding column 31, for example, three supporting legs are arranged at intervals, so that the guiding column 31 may be suspended and supported in the gas mixing chamber 21 through the supporting legs 32 to avoid blocking the passage between the gas mixing chamber 21 and the injection pipe 22. The bottom surface of the flow guiding column 31 is a flow guiding surface 311 which is gradually inclined downwards from the periphery to the middle, and the middle of the flow guiding surface 311 can be over against the injection pipe 22 so as to guide the fuel gas and the air upwards. The diversion column 31 is located on the peripheral wall above the diversion surface 311, and an annular groove 33 is formed. The part of the guide column 31 below the groove 33 and the part of the guide column 31 above the groove 31 protrude more toward the side wall of the gas mixing chamber 21, that is, the gap between the peripheral wall edge of the part of the guide column 31 below the groove 33 and the side wall of the gas mixing chamber 21 is smaller than the gap between the peripheral wall edge of the part of the guide column 31 above the groove 33 and the side wall of the gas mixing chamber 21, and such an outlet structure of the mixed gas passage Q3 can effectively decelerate the mixed gas flowing at high speed to prevent the fire from escaping and backfire during combustion.

The gas flows through the nozzle 5 through the gas inlet passage Q2, enters the injection pipe 22, and the injection pipe 22 simultaneously injects a part of air from the primary air inlet passage Q1, the gas and the air enter the gas mixing chamber 21 to be mixed, and the mixed gas flows upwards from the mixed gas passage Q3 and then is combusted. The rest of the air flowing out of the primary air intake passage Q1 passes upward from the outer periphery of the gas mixing device 2.

The cyclone device 4 is in a hollow cylindrical shape with an upper opening and a lower opening, the bottom of the cyclone device 4 surrounds the periphery of the base 11, and is connected with the base 11 of the base 10 through a bearing 6 to form a revolving body capable of rotating around the axis of the base 11. The peripheral wall of the cyclone device 4 is opened with a plurality of air inlets 41, the air inlets 41 extend along the circumferential direction and are arranged at intervals, so as to form a secondary air inlet passage Q4, and the secondary air inlet passage Q4 is positioned above the gas mixing device 2. Referring to fig. 5, the gas flow path is shown by arrows a, the air flow path is shown by arrows B, and the mixture flow path is shown by arrows C. A combustion region Q is formed in the cyclone 4 above the gas mixing device 2.

A second gear 42 is provided on the peripheral wall of the cyclonic device 4 below the air inlet 41, the second gear 42 being in mesh with a first gear 71 on the output shaft of the motor 7. Thus, the cyclone device 4 can be powered by the motor 7 to rotate around the base 11 in the working state. The rotation of the cyclone device 4 can form a spiral ascending air flow, partial air of the primary air inlet channel Q1 and air of the secondary air inlet channel Q4 are sucked into a combustion area, so that the air flow in the combustion area forms turbulence, the flame is more fully contacted with the air, and the rotating speed of the motor 7 is controlled by a signal of a control circuit according to different firepower so as to correspondingly change to match the air quantity and the flame state at the moment. The cyclone device 4 generates negative pressure inside by rotating, the pressure change is adjusted between 10pa and 45pa, and the diameter of the cyclone device is 25mm to 35mm larger than that of the gas mixing device 2.

A plurality of blades 43 are provided at circumferentially spaced intervals on the inner side of the peripheral wall of the cyclone unit 4 above the air inlet 41, and the blades 43 are generally provided in 12 to 20 pieces having a width of 4mm to 6mm and a height of 6mm to 12mm. The blades 43 can drive the air to rotate when the cyclone device 4 rotates to form ascending cyclone, so that the pressure of the primary air inlet channel Q1 is improved, the quantity of the primary air entering the injection pipe 22 is further increased, sufficient combustion is ensured, and the rest air rises along with the cyclone to become secondary air.

The burner of the invention drives the cyclone device 4 to rotate through the motor 7, so that the peripheral air is sucked internally and then contacts with the flame to promote the height of the flame to be increased, the gas is burnt more fully, the height of the flame is increased, the height of the flame of the conventional burner is generally about 20mm, the scheme of the invention can increase the flame to 50 mm-80 mm, and the concentrated flame can greatly improve the heat exchange intensity, thereby effectively improving the heat exchange efficiency. The scheme can effectively miniaturize the combustor under the condition of the same power.

Claims

1. The utility model provides a combustor, includes base (1), gas inlet channel (Q2), primary air inlet channel (Q1) and is located the gas of base (1) top and mixes gas device (2), be formed with in the gas mixes gas device (2) and mixes gas channel (Q3) with gas inlet channel (Q2) and primary air inlet channel (Q1) intercommunication, its characterized in that: the burner also comprises a cyclone device (4) which is rotatably supported on the base (1), wherein the cyclone device (4) is hollow and cylindrical, the upper opening and the lower opening of the cyclone device are formed in the periphery of the gas mixing device (2), an air inlet (41) is formed in the peripheral wall of the cyclone device (4) to form a secondary air inlet channel (Q4), the secondary air inlet channel (Q4) is positioned above the gas mixing device (2), and a combustion area (Q) is formed in the cyclone device (4) and above the gas mixing device (2).

2. The burner of claim 1, wherein: a plurality of blades (43) are arranged on the inner side of the peripheral wall of the cyclone device (4) and above the air inlet (41), and the blades (43) are arranged at intervals along the circumferential direction.

3. The burner of claim 2, wherein: the width of the blade (43) is 4 mm-6 mm, and the height is 6 mm-12mm.

4. The burner of any of claims 1~3, wherein: base (1) includes base (11) and gas pipe (12), base (11) are upper and lower open-ended cavity form, gas pipe (12) extend to base (11) in and buckle upwards extending from base (11) outward, form in gas pipe (12) gas inlet channel (Q2), the part of encircleing gas pipe (12) periphery forms in base (11) primary air inlet channel (Q1), the top that gas pipe (12) are located base (11) inside part is provided with nozzle (5).

5. The burner of claim 4, wherein: base (1) still includes support frame (13) by base (11) outside extension, be provided with motor (7) on support frame (13), be provided with first gear (71) on the output shaft of motor (7), base (11) are cylindricly, the bottom of cyclone (4) is rotated and is supported in base (11) periphery, cyclone (4) periphery is provided with second gear (42) with first gear (71) meshing.

6. The burner of claim 4, wherein: the gas mixing device (2) comprises a gas mixing chamber (21) with an upper opening, and an injection pipe (22) which is positioned below the gas mixing chamber (21) and communicated with the gas mixing chamber (21), wherein the injection pipe (22) is positioned above the nozzle (5).

7. The burner of claim 6, wherein: the lower part of the injection pipe (22) is a bell mouth with a large lower part and a small upper part.

8. The burner of claim 6, wherein: the gas mixing chamber (21) is internally provided with a gas guiding device (3), and the part of the gas mixing chamber (21) surrounding the periphery of the gas guiding device (3) forms the mixed gas channel (Q3).

9. The burner of claim 8, wherein: the gas guiding device (3) comprises a guiding column (31) which is supported in the gas mixing chamber (21) in a suspending way, the bottom surface of the guiding column (31) is a guiding surface (311) which is gradually inclined downwards from the periphery to the middle, and the middle of the guiding surface (311) is opposite to the injection pipe (22).

10. The burner of claim 9, wherein: an annular groove (33) is formed in the peripheral wall of the diversion column (31) above the diversion surface (311), and a gap between the peripheral wall edge of the diversion column (31) below the groove (33) and the side wall of the air mixing chamber (21) is smaller than a gap between the peripheral wall edge of the diversion column (31) above the groove (33) and the side wall of the air mixing chamber (21).