CN112361603A - Double-ejection micro-flame distributor, gas burner and water heater - Google Patents

Abstract

The invention discloses a double-ejection micro-flame distributor, which comprises an outer shell, wherein the outer shell is provided with a head flame stabilizing notch and two gas mixing channels, the two gas mixing channels are arranged at the lower part of the outer shell in a bilateral symmetry manner, each gas mixing channel is provided with a gas inlet and a gas outlet, the two gas inlets are oppositely arranged at left and right intervals, the two gas outlets are communicated with the head flame stabilizing notch, each gas mixing channel comprises a mixing section, an expansion section and a dispersion section, the mixing section is connected with the gas inlets and extends outwards from the gas inlets along the left and right directions, the expansion section is connected with the mixing section and bends upwards, the dispersion section is connected with the expansion section and the gas outlets and extends against the extending direction of the gas mixing channels, the dispersion section comprises a flow limiting part far away from a symmetry line and a flow dividing part close to the symmetry line, the flow area of the flow limiting part is smaller than that of the flow dividing part, the gas burner comprises a plurality of double-ejection micro-flame distributors, and the water heater comprises the gas burner.

Description

Double-ejection micro-flame distributor, gas burner and water heater

Technical Field

The invention relates to the technical field of water heaters, in particular to a double-ejection micro-flame distributor, a gas burner and a water heater.

Background

The fire distributor is a part of a burner of gas water heating equipment. Current distributor is applicable to the small load product in order to improve primary air and gas mixed degree, adopts harmonica formula distributor (distributor has two gas entries), but following problem can appear in the use in current harmonica formula distributor: easy tempering, the burning flame height is higher, the flame homogeneity is poor, and the burning value of minimum load still is higher to it is comparatively complicated to assemble, fixes through the welding, leads to the solder joint extremely many, and the cost of labor is high.

Disclosure of Invention

The invention aims to provide a double-ejection micro-flame distributor, a gas burner and a water heater, which are used for solving one or more technical problems in the prior art and at least provide a beneficial selection or creation condition.

The technical scheme adopted for solving the technical problems is as follows:

the invention provides a double-ejection micro-flame distributor, which comprises an outer shell, wherein the outer shell is provided with a head flame stabilizing notch and two gas mixing channels, the outer shell is provided with a symmetry line extending up and down, the head flame stabilizing notch extends left and right and is arranged at the top of the outer shell, the two gas mixing channels are arranged at the lower part of the outer shell in a left and right symmetry mode relative to the symmetry line, each gas mixing channel is provided with a gas inlet and a gas outlet, the two gas inlets are arranged in a left and right interval opposite direction, the two gas outlets are communicated with the head flame stabilizing notch, the two gas outlets extend along the head flame stabilizing notch, each gas mixing channel comprises a mixing section, an expansion section and a dispersion section, the expansion section and the gas outlets are connected with the gas inlets and extend along the extension direction of the gas mixing channel, the dispersion section comprises a flow limiting part far away from the symmetry line and a flow dividing part close to the symmetry line, the flow limiting part is close to the outlet of the expansion section, the flow area of the flow limiting part is smaller than that of the flow dividing part, and the cross section of the expansion section is gradually increased from the mixing section to the dispersion section.

The invention has the beneficial effects that: when in use, the fuel gas is sprayed into the gas mixing channel from the gas inlet through the externally arranged nozzle, and carries primary air to enter the mixing section for mixing, then the mixed gas flows into the dispersing section after passing through the expanding section for volume expansion and is guided by the expanding section, one part of the mixed gas enters the dispersing section and flows to the gas outlet through the flow limiting part, the other part of the mixed gas flows to the gas outlet through the flow dividing part, and all the mixed gas is discharged from the head flame stabilizing notch for combustion after passing through the gas outlet, because the flow area of the flow limiting part is smaller than the flow area of the flow dividing part, the flow of the mixed gas passing through the flow limiting part can be limited, the mixed gas passing through the flow dividing part is prevented from being too small, the flow channel is stable, the distribution of the fuel gas and the stability of flame can not be influenced by the generation of vortex when the fuel gas passes through, and, the mixed gas of the two parts can be balanced, the gas output of each part of the gas outlet is ensured to be uniform, and the combustion value of the minimum load is further reduced.

As the further improvement of the technical scheme, the double-injection micro-flame distributor further comprises a fire hole sheet structure, the fire hole sheet structure is extended left and right and is installed in the head flame stabilizing notch, and a plurality of fire holes are uniformly distributed at the top of the fire hole sheet structure. So that the mixed gas passing through the head flame stabilizing notch can enter the fire hole sheet structure and be discharged through the plurality of fire holes for combustion. Can design the position and the shape of burner according to the demand of difference, burner piece structure can adopt the detachable mounting means to be fixed in the head steady flame notch on simultaneously, is convenient for maintain the burner piece structure and change, reduces the cost of maintenance. In addition, the fire hole sheet structure can be fixed in a welding mode.

As a further improvement of the above technical scheme, the top surface of the flame vent piece structure is provided with a groove with a V-shaped cross section, the groove is provided with a left side and a right side extending part, the flame vents are divided into a plurality of first flame vents, a plurality of second flame vents and a plurality of third flame vents, the first flame vents are arranged in the groove in a front-back extending manner, two ends of the first flame vents extend to two side walls of the groove, the second flame vents and the third flame vents are arranged on two side walls of the groove in a front-back one-to-one opposite manner, the first flame vents are arranged at intervals along the extending direction of the groove, and the second flame vents and the third flame vents are arranged between two adjacent first flame vents.

The mist can be followed first flame mouth, second flame mouth and third flame mouth discharge and is burnt, spanes the both sides wall of V-arrangement recess at first flame mouth and second flame mouth and third flame mouth and sets up under the condition on the both sides wall of recess one-to-one relatively around being, can avoid appearing the phenomenon of tempering for the flame of burning distributes more densely, and combustion efficiency is higher, and reduces the height of burning flame.

As a further improvement of the above technical scheme, a plurality of flame stabilizing ports are formed between the outer side wall of the flame port piece structure and the inner side wall of the head flame stabilizing notch, the plurality of flame stabilizing ports are uniformly distributed on the front side and the rear side of the flame port piece structure at intervals, and the outer ends of the second flame port and the third flame port extend to the flame stabilizing ports respectively.

The mixed gas can be sprayed out through the plurality of flame stabilizing ports to be combusted, and the second flame port and the third flame port can be connected with the flame stabilizing ports to further stabilize the combustion flame.

As the further improvement of the technical scheme, the outer side of the head flame stabilizing notch is connected with a plurality of flame transmitting sheets, the plurality of flame transmitting sheets correspond to the plurality of flame stabilizing notches one by one, and the flame transmitting sheets are arranged in an outward extending mode. The flame from the flame stabilizing port can extend outwards along the flame transfer sheet, so that the flame combustion range can be expanded, and the height of the combustion flame is further reduced.

As a further improvement of the technical scheme, the fire transmitting sheet is obliquely and upwardly extended outwards. Under the guidance of the fire transfer piece, two adjacent fire distributors can realize fire transfer.

As a further improvement of the technical scheme, the outer shell comprises a first fire distribution shell and a second fire distribution shell, wherein a flange is arranged on the outer edge of the first fire distribution shell or the outer edge of the second fire distribution shell, the first fire distribution shell and the second fire distribution shell are fixed through riveting of the flanges, and the head flame stabilizing notch and the two gas mixing channels are formed between the first fire distribution shell and the second fire distribution shell.

When the production is made, the first flame distributing shell and the second flame distributing shell are fixedly riveted through the turned-over edges to form the shell body, welding is not needed, assembling is convenient, and production and cost reduction are facilitated.

As a further improvement of the technical scheme, a plurality of support legs are arranged on the outer edge of the second fire distribution shell or the first fire distribution shell. The shell body is fixed through the support legs in an inserted mode, and therefore the manual assembly cost is greatly saved.

Meanwhile, the invention also provides a gas burner which comprises the double-ejection micro-flame distributor, wherein the number of the double-ejection micro-flame distributor is multiple, the gas burner also comprises a fixing frame and an ejection square pipe, the double-ejection micro-flame distributor is fixed on the fixing frame in parallel at intervals in the front and back direction, and the ejection square pipe is arranged between two gas inlets of the double-ejection micro-flame distributor. The nozzles on the ejection square tubes correspond to the air inlets one to one, and the design of the double gas mixing channels improves the ejection capacity of primary air, increases the proportion of the primary air in mixed gas, reduces the height of flame, reduces heat waste and improves the energy utilization rate.

In addition, the invention also provides a water heater, which comprises the gas burner. The distributor with the double injection flow passage design can reduce the area of the wall of the combustion chamber.

Drawings

The invention is further described with reference to the accompanying drawings and examples;

FIG. 1 is an exploded view of an embodiment of the dual injection micro-flame distributor of the present invention, wherein the two arrows respectively represent the forward direction and the backward direction, wherein the two arrows respectively represent the left direction and the right direction, wherein the two arrows respectively represent the upward direction and the downward direction;

FIG. 2 is a schematic structural view of an embodiment of the dual injection micro-flame distributor of the present invention;

FIG. 3 is a partial enlarged view A of FIG. 2;

FIG. 4 is a front view of an embodiment of the dual injection micro-flame distributor of the present invention, wherein the two arrows respectively represent the left direction and the right direction, and wherein the two arrows respectively represent the up direction and the down direction;

fig. 5 is a sectional view in the direction B-B in fig. 4, in which two arrows indicate the forward direction and the backward direction, respectively, and in which two arrows indicate the upward direction and the downward direction, respectively.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if words such as "a plurality" are described, the meaning is one or more, the meaning of a plurality is two or more, more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 5, the double injection micro-flame distributor of the present invention is made as follows:

the double-ejection micro-flame distributor of the embodiment comprises a shell body 100, wherein the shell body 100 comprises a first fire distribution shell 130 and a second fire distribution shell 140, the first fire distribution shell 130 and the second fire distribution shell 140 are riveted and fixed through a flange 150 without welding, so that the assembly is convenient, the production and the cost reduction are facilitated, a head flame stabilizing notch 110 and two gas mixing channels 120 are formed between the first fire distribution shell 130 and the second fire distribution shell 140, the flange 150 can be arranged on the outer edge of the first fire distribution shell 130 or the second fire distribution shell 140, the shell body 100 is provided with a symmetrical line extending up and down, the head flame stabilizing notch 110 extends left and right and is arranged at the top of the shell body 100, the two gas mixing channels 120 are arranged at the lower part of the shell body 100 in a left-right symmetrical manner about the symmetrical line, the gas mixing channels 120 are provided with a gas inlet 121 and a gas outlet, the gas inlets 121 are arranged in a left-right interval and opposite direction, two the gas outlet with head flame holding notch 110 intercommunication, two the gas outlet follows head flame holding notch 110 extends the setting, specifically: the gas mixing channel 120 comprises a mixing section 122 connected with the gas inlet 121 and extending outwards from the gas inlet 121 along the left-right direction, an expanding section 123 connected with the mixing section 122 and bending upwards, and a dispersing section 124 connected with the expanding section 123 and the gas outlet and extending against the extending direction of the gas mixing channel 120, wherein the section of the expanding section 123 is gradually increased from the mixing section 122 to the dispersing section 124, the dispersing section 124 comprises a flow limiting part 125 far away from the symmetry line and a flow dividing part 126 close to the symmetry line, the flow restriction 125 is located near the outlet of the divergent section 123, the flow area of the flow restriction 125 is smaller than the flow area of the flow splitting section 126, as shown in fig. 5, the flow restriction 125 in this embodiment is formed by forming a concave portion on the first distributor shell 130 and the second distributor shell 140 by pressing, so that the flow passage of the flow restriction 125 is disposed at the center.

The mixing section 122 in this embodiment also has a function of diffusion, and the inner diameter of the cross section thereof gradually increases from the gas inlet 121 to the expanding section 123, so that the mixed gas is mixed in the mixing section 122 and the diffusion is also realized.

During combustion, fuel gas is sprayed into the gas mixing channel 120 from the gas inlet 121 through an external nozzle, and carries primary air to enter the mixing section 122 for mixing, then the mixed gas is expanded in volume after passing through the expanding section 123 and flows into the dispersing section 124 after being guided by the expanding section, one part of the mixed gas after entering the dispersing section 124 flows to a gas outlet through the flow limiting part 125, the other part of the mixed gas flows to a gas outlet through the flow dividing part 126, and all the mixed gas is discharged from the flame stabilizing notch 110 for combustion after passing through the gas outlet, because the flow area of the flow limiting part 125 is smaller than the flow area of the flow dividing part 126, the mixed gas passing through the flow limiting part 125 can be limited, the mixed gas passing through the flow dividing part 126 is prevented from being too small, the flow channel is changed stably, no vortex is generated when the fuel gas passes through, the distribution of the fuel gas and the stability of flame are not affected, and the mixed gas coming out from, the mixed gas of the two parts can be balanced, the gas output of each part of the gas outlet is ensured to be uniform, and the combustion value of the minimum load is further reduced.

Further, two draw and penetrate little flame distributor still include burner plate structure 200, and burner plate structure 200 is about extending to install in head steady flame notch 110, the top equipartition of burner plate structure 200 has a plurality of flame mouths, specifically: the top surface of the flame vent structure 200 is provided with a groove 210 with a V-shaped cross section, the groove 210 extends left and right, the flame vent is divided into a plurality of first flame vents 220, a plurality of second flame vents 230 and a plurality of third flame vents 240, the first flame vents 220 extend front and back and are arranged in the groove 210, two ends of the first flame vents 220 extend to two side walls of the groove 210, the second flame vents 230 and the third flame vents 240 are arranged on two side walls of the groove 210 one by one, the first flame vents 220 are arranged at intervals along the extending direction of the groove 210, and the second flame vents 230 and the third flame vents 240 are arranged between two adjacent first flame vents 220.

Thereby the mist that the steady flame notch of head 110 passed through can get into in the flame piece structure 200, mist is discharged from first flame vent 220, second flame vent 230 and third flame vent 240 and is burnt, set up under the condition on the both sides wall of recess 210 one-to-one around the both sides wall that first flame vent 220 spaned the recess 210 of V-arrangement, and second flame vent 230 and third flame vent 240 are, can avoid appearing the phenomenon of tempering, make the flame distribution of burning more intensive, combustion efficiency is higher, and reduce the height of burning flame. The cross-section of the groove 210 may be circular arc type or flat, etc.

Meanwhile, a plurality of flame stabilizing ports 300 are formed between the outer side wall of the flame port piece structure 200 and the inner side wall of the head flame stabilizing notch 110, the plurality of flame stabilizing ports 300 are uniformly distributed at intervals on the front side and the rear side of the flame port piece structure 200, the outer ends of the second flame port 230 and the third flame port 240 respectively extend to the flame stabilizing ports 300, the mixed gas can be sprayed out through the plurality of flame stabilizing ports 300 to be combusted, and the second flame port 230 and the third flame port 240 can be connected with the flame stabilizing ports 300, so that the flame can be further stably combusted. And a plurality of fire transmitting pieces 111 are connected to the outer side of the head flame stabilizing notch 110, the plurality of fire transmitting pieces 111 correspond to the plurality of flame stabilizing notches 300 one by one, and the fire transmitting pieces 111 are extended outwards. The flame from the flame stabilizing port 300 can extend outwards along the flame transfer sheet 111, so that the flame combustion range can be expanded, and the height of the combustion flame can be further reduced. The fire transmitting plate 111 in this embodiment is inclined and extends outward and upward. Under the guidance of the fire transfer piece 111, two adjacent fire distributors can realize fire transfer.

For the convenience of installation, a plurality of support legs 160 are provided at the outer edge of the second fire-dividing shell 140 or the first fire-dividing shell 130. The outer shell 100 is fixed by inserting the support legs 160, so that the manual assembly cost is greatly saved.

In some embodiments, the position and shape of the fire hole can be designed according to different requirements, and meanwhile, the fire hole piece structure 200 can be fixed on the head flame stabilizing notch 110 by adopting a detachable installation mode, so that the fire hole piece structure 200 can be conveniently repaired and replaced, and the repair cost is reduced. In addition, the burner tile structure 200 can be fixed by welding.

In some embodiments, the flame row structure of the head flame holding slot 110 may be directly adopted, i.e., the flame ports are integrally formed on the first flame-dividing shell 130 and the second flame-dividing shell 140.

In some embodiments, the outer housing 100 may be of an integrally formed design.

This embodiment also provides a gas burner, and it includes the mount, draws to penetrate square pipe and a plurality of two and draw and penetrate little flame distributor, and is a plurality of two draw and penetrate little flame distributor and be on interval parallel fixation in the mount around being, draw and penetrate square pipe and set up two that two draw and penetrate little flame distributor between the air inlet 121. The nozzles on the ejection square tubes correspond to the air inlets 121 one to one, and the design of the double-gas-mixing channel 120 improves the ejection capacity of primary air, increases the proportion of the primary air in mixed gas, reduces the height of flame, reduces heat waste and improves the energy utilization rate.

And this embodiment still provides a water heater, adopts foretell gas burner, and the area of the reducible combustion chamber wall of distributor of two injection runner designs.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.

Claims (10)

1. The utility model provides a two draw and penetrate little flame distributor which characterized in that: it includes shell body (100), shell body (100) are equipped with head flame holding notch (110), two and mix gas passageway (120), shell body (100) have and are the symmetry line that extends from top to bottom, head flame holding notch (110) are about extending and set up in the top of shell body (100), two mix gas passageway (120) about the symmetry line is bilateral symmetry and sets up in the lower part of shell body (100), mix gas passageway (120) and have air inlet (121) and gas outlet, two interval sets up in opposite directions about air inlet (121) are, two the gas outlet with head flame holding notch (110) intercommunication, two the gas outlet is followed head flame holding notch (110) extend the setting, mix gas passageway (120) include with air inlet (121) connect and follow left right direction from air inlet (121) toward outer mixed section (122) that extend, The gas mixing device comprises an expansion section (123) connected with the mixing section (122) and bent upwards, and a dispersion section (124) connected with the expansion section (123) and the gas outlet and extending against the extending direction of the gas mixing channel (120), wherein the dispersion section (124) comprises a flow limiting part (125) far away from the symmetry line and a flow dividing part (126) close to the symmetry line, the flow limiting part (125) is close to the outlet of the expansion section (123), the flow area of the flow limiting part (125) is smaller than that of the flow dividing part (126), and the cross section of the expansion section (123) is gradually increased from the mixing section (122) to the dispersion section (124).

2. The double-ejection micro-flame distributor according to claim 1, characterized in that: two draw and penetrate little flame distributor still includes burner plate structure (200), extension about burner plate structure (200) are and install in head steady flame notch (110), the top equipartition of burner plate structure (200) has a plurality of flame mouths.

3. The double-ejection micro-flame distributor according to claim 2, characterized in that: the top surface of flame piece structure (200) is provided with recess (210) that the cross-section is the V-arrangement, recess (210) are and extend the setting about being, and is a plurality of the flame mouth divide into first flame mouth (220) of a plurality of, a plurality of second flame mouth (230) and a plurality of third flame mouth (240), extend around first flame mouth (220) being and set up in recess (210), the both ends of first flame mouth (220) extend to on the both sides wall of recess (210), second flame mouth (230) and third flame mouth (240) are around set up on the both sides wall of recess (210) one-to-one relatively, and first flame mouth (220) of a plurality of are followed the direction that recess (210) extend is the interval setting, all sets up between two adjacent first flame mouths (220) second flame mouth (230) and third flame mouth (240).

4. The double-ejection micro-flame distributor according to claim 3, characterized in that: be formed with a plurality of steady flame mouths (300) between the lateral wall of burner plate structure (200) and the inside wall of head steady flame notch (110), a plurality of steady flame mouths (300) are the interval equipartition in the front side and the rear side of burner plate structure (200), the outer end of second flame mouth (230) and third flame mouth (240) extends to respectively steady flame mouth (300).

5. The double-ejection micro-flame distributor according to claim 4, characterized in that: the outside of head flame stabilizing notch (110) is connected with a plurality of biography fire piece (111), a plurality of biography fire piece (111) and a plurality of flame stabilizing port (300) one-to-one, pass fire piece (111) and be the setting of outwards extending.

6. The double-ejection micro-flame distributor according to claim 5, characterized in that: the fire transmitting sheet (111) is obliquely and upwardly extended outwards.

7. The double-ejection micro-flame distributor according to claim 1, characterized in that: the shell body (100) includes first branch fire shell (130), second branch fire shell (140), first branch fire shell (130) or second branch fire shell (140) are outer along being provided with turn-ups (150), first branch fire shell (130) and second branch fire shell (140) are through turn-ups (150) riveting fixed, form between first branch fire shell (130) and second branch fire shell (140) head steady flame notch (110), two gas mixing channel (120).

8. The double-ejection micro-flame distributor according to claim 7, characterized in that: a plurality of support legs (160) are arranged on the outer edge of the second fire distribution shell (140) or the first fire distribution shell (130).

9. A gas burner, characterized in that: the double-ejection micro-flame distributor comprises the double-ejection micro-flame distributor according to any one of claims 1 to 8, wherein the quantity of the double-ejection micro-flame distributor is multiple, the gas burner further comprises a fixing frame and an ejection square pipe, the double-ejection micro-flame distributor is fixed on the fixing frame in parallel at intervals in the front and at the back, and the ejection square pipe is arranged between the two air inlets (121) of the double-ejection micro-flame distributor.

10. A water heater, characterized in that: comprising a gas burner as claimed in claim 9.

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