CN220958470U - Nozzle for burner and combustion system with same - Google Patents
Nozzle for burner and combustion system with same Download PDFInfo
- Publication number
- CN220958470U CN220958470U CN202322798888.5U CN202322798888U CN220958470U CN 220958470 U CN220958470 U CN 220958470U CN 202322798888 U CN202322798888 U CN 202322798888U CN 220958470 U CN220958470 U CN 220958470U
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- nozzle
- section
- air inlet
- flow
- inlet
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 46
- 239000002737 fuel gas Substances 0.000 claims abstract description 41
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000008602 contraction Effects 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 238000009792 diffusion process Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Abstract
A nozzle for a burner and a combustion system having the same, the nozzle comprising: the tubular nozzle body is internally provided with a runner extending along the length direction, the head end of the runner is provided with a fuel gas inlet for inputting a fuel gas source, the tail end of the runner is provided with a fuel gas outlet for outputting fuel gas in the runner, and the side wall of the runner between the head end and the tail end is provided with a gas inlet penetrating through the wall thickness so as to communicate the runner with the outside; the air inlet is at least partially shielded by the retainer ring, and the retainer ring is arranged to move along the length direction of the nozzle body under the action of external force so as to be far away from the air inlet, thereby reducing shielding of the air inlet. Compared with the prior art, the air inlet area of the air inlet can be adjusted by adjusting the position of the check ring, so that the effect of adjusting the air injection quantity is achieved.
Description
Technical Field
The utility model belongs to the technical field of household stoves, and particularly relates to a nozzle for a burner and a combustion system with the nozzle.
Background
The nozzle for a burner comprises an inlet section, a premixing section and an outlet section, wherein the premixing section is connected with the inlet section and the outlet section, an arc horn-shaped channel which gradually changes along the direction from the inlet section to the premixing section is arranged in the inlet section, a primary injection air inlet is arranged in the premixing section, and the primary injection air inlet is communicated with the arc horn-shaped channel. External air is injected from the primary injection air inlet under the action of pressure difference, so that the air coefficient in the mixed gas of fuel gas and air is improved, the combustion sufficiency of the fuel gas is effectively improved, and the combustion heat efficiency and the utilization rate of the fuel gas are improved.
The existing nozzle can jet outside air, but the air jet quantity cannot be adjusted; and the uniformity of the air and the fuel gas is required to be further improved.
Disclosure of utility model
The first technical problem to be solved by the present utility model is to provide a nozzle for a burner to adjust the air injection quantity, aiming at the current state of the art.
The second technical problem to be solved by the utility model is to provide a nozzle for a burner, so as to promote the uniform mixing of fuel gas and air.
A third technical problem to be solved by the present utility model is to provide a combustion system having the nozzle.
The technical scheme adopted by the utility model for solving the first technical problem is as follows: a nozzle for a burner, comprising:
The tubular nozzle body is internally provided with a runner extending along the length direction, the head end of the runner is provided with a fuel gas inlet for inputting a fuel gas source, the tail end of the runner is provided with a fuel gas outlet for outputting fuel gas in the runner, and the side wall of the runner between the head end and the tail end is provided with a gas inlet penetrating through the wall thickness so as to communicate the runner with the outside;
It is characterized in that the method also comprises the following steps:
The check ring is circumferentially sleeved on the periphery of the nozzle body and at least partially shields the air inlet, and the check ring is arranged to be capable of moving along the length direction of the nozzle body under the action of external force to be far away from the air inlet, so that shielding of the air inlet is reduced.
Therefore, the air inlet area of the air inlet can be adjusted by adjusting the position of the check ring, and the effect of adjusting the air injection quantity is achieved.
Preferably, at least part of the flow channel upstream of the air inlet is a constriction along the flow direction of the fuel gas from the fuel gas inlet to the fuel gas outlet, and the flow area of the constriction in cross section is gradually reduced along the flow direction of the fuel gas. The fuel gas can be accelerated after passing through the contraction section, thereby being beneficial to injecting the external air through the air inlet.
Preferably, the part of the flow channel located downstream of the contraction section and upstream of the air inlet is an injection section, and the flow area of the injection section on the cross section is unchanged along the flow direction of the fuel gas and is consistent with the flow area of the small end of the contraction section.
To further solve the second technical problem, preferably, the injection section of the flow channel is connected to the portion of the flow channel where the air inlet is located through an expansion section, and the flow area on the cross section of the expansion section is gradually increased along the flow direction of the fuel gas. Therefore, the air ejected to the inside of the flow channel through the air inlet surrounds the periphery of the fuel gas ejected through the ejection section so as to be well mixed with the fuel gas.
Preferably, the length of the expansion section is less than the length of the contraction section.
In order to further solve the second technical problem, preferably, at least a part of the flow passage located downstream of the air inlet is a diffuser section, and a flow area on a cross section of the diffuser section is gradually increased along a gas flow direction. The diffuser design is beneficial to slowing down the flow rate of the air flow and promoting further mixing of the fuel gas and air.
Further, the small end of the diffusion section is connected with the part where the air inlet of the flow channel is located through the throat section, and the flow area on the cross section of the throat section is unchanged along the flow direction of the fuel gas and is consistent with the flow area of the small end of the diffusion section.
Still further, the throat section, diffuser section, and injection section are coaxially arranged.
In the above embodiments, the number of the air inlets may be one, two or more, and in order to ensure the primary air supply amount, it is preferable that at least two air inlets are arranged at intervals in the circumferential direction. The air inlets arranged at intervals along the circumferential direction can simultaneously supply external air to enter, and the structure arranged along the circumferential direction enables the supplemented air to circumferentially surround the periphery of the fuel gas, so that the uniform mixing of the fuel gas and the air is facilitated.
In each of the above aspects, preferably, the air inlet is located at a central position in a longitudinal direction of the nozzle body. The center position is not limited to the center, and may be offset from the center.
Preferably, the outer peripheral wall of the nozzle body is provided with external threads, and the inner ring wall of the retainer ring is provided with matched internal threads, so that the retainer ring is in threaded connection with the nozzle body. Therefore, the retainer ring can be moved along the length direction of the nozzle main body by rotating the retainer ring, and the operation is convenient.
The technical scheme adopted by the utility model for solving the third technical problem is as follows: the combustion system with the nozzle is characterized by further comprising a burner with an air inlet channel, wherein the gas outlet of the nozzle body is communicated with the air inlet of the air inlet channel.
Preferably, the end of the nozzle body where the gas outlet is located is inserted into the gas inlet of the gas inlet channel, and the gas inlet of the nozzle body and the retainer ring are located outside the gas inlet channel.
Preferably, the end of the nozzle body where the gas outlet is located is screwed into the gas inlet of the gas inlet channel.
Further, the outer diameter of the end of the nozzle body where the gas outlet is located is smaller than the outer diameter of the portion of the nozzle body where the gas inlet is located.
The combustion system is used for a kitchen range.
Compared with the prior art, the utility model has the advantages that: through setting up the retaining ring in the periphery of nozzle main part, through adjusting the position of retaining ring, can adjust the air inlet area of air inlet to reach the effect of adjusting the air injection volume.
Drawings
FIG. 1 is a schematic view of a nozzle according to an embodiment of the present utility model;
FIG. 2 is a longitudinal cross-sectional view of a nozzle in an embodiment of the utility model;
FIG. 3 is a schematic view of a partial structure of a combustion system according to an embodiment of the present utility model;
FIG. 4 is a cross-sectional view of a combustion system in an embodiment of the utility model;
Fig. 5 is an enlarged view of a portion a in fig. 4.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 5, a nozzle 100 according to a preferred embodiment of a burner nozzle and a combustion system having the same according to the present utility model includes a nozzle body 110 and a retainer ring 120.
The nozzle body 110 is tubular, and has a flow channel extending along a length direction therein, a gas inlet 110a for gas source input is provided at a head end of the flow channel, a gas outlet 110b for gas output is provided at a tail end of the flow channel, and a gas inlet 111 penetrating through a wall thickness is provided on a side wall of the flow channel between the head end and the tail end for communicating the flow channel with the outside. And at least two air inlets 111 are arranged at the central position in the length direction of the nozzle body 110 at equal intervals in the circumferential direction.
In this embodiment, along the flow direction of the fuel gas from the fuel gas inlet 110a to the fuel gas outlet 110b, the portion of the flow channel located upstream of the air inlet 111 has an input section 117, a contracted section 112, an injected section 113, and an expanded section 114 that are sequentially connected. Along the gas flow direction:
The input section 117 is a straight section with a constant flow area, and the port of the input section 117 is the gas inlet 110a;
The flow area across the cross section of the constriction 112 is progressively smaller;
The flow area of the spray section 113 on the cross section is constant and is consistent with the flow area of the small end of the constriction section 112;
The flow area of the expanded section 114 increases gradually in cross section and the length of the expanded section 114 in the direction of flow of the fuel gas is smaller than the length of the contracted section 112.
Meanwhile, along the flow direction of the fuel gas from the fuel gas inlet 110a to the fuel gas outlet 110b, the portion of the flow channel downstream of the air inlet 111 has a throat section 116 and a diffuser section 115 that are sequentially joined. Along the gas flow direction:
The flow area across the throat section 116 is constant and greater than the flow area across the jet section 113;
the flow area across the diffuser 115 increases gradually. The diffuser 115 is ported to the gas outlet 110b.
In this embodiment, the input section 117, the contraction section 112, the injection section 113, the expansion section 114, the throat section 116 and the diffuser section 115 are coaxially arranged, and the axis is the central axis of the nozzle body 110. And the inclination angle beta of the inner wall of the diffuser 115 relative to the middle axis of the nozzle body 110 is 0-30 deg., which is smaller than the inclination angle of the inner wall of the convergent section 112 relative to the middle axis of the nozzle body 110.
The retainer ring 120 is circumferentially sleeved on the outer periphery of the nozzle body 110 and at least partially shields the air inlet 111, and the retainer ring 120 is arranged to be movable away from the air inlet 111 along the length direction of the nozzle body 110 under the action of external force, so that shielding of the air inlet 111 is reduced. In this embodiment, the outer peripheral wall of the nozzle body 110 is provided with external threads, and the inner ring wall of the retainer ring 120 is provided with mating internal threads, so that the retainer ring 120 is in threaded connection with the nozzle body 110. Thus, the position of the retainer ring 120 can be adjusted by rotating the retainer ring 120, so as to adjust the air inlet area of the air inlet 111.
As shown in fig. 3 to 5, the combustion system of the present embodiment is used for a household kitchen range, and includes a burner 200 and the nozzle 100 described above. The burner 200 has an air inlet channel 201 extending up and down, and a lower port of the air inlet channel 201 is an air inlet. The end of the nozzle body 110 where the gas outlet 110b is located is screwed into the gas inlet of the gas inlet channel 201 and communicates with the gas inlet channel 201. The air inlet 111 of the nozzle body 110 and the retainer 120 are located outside the air inlet passage 201. And the outer diameter of the portion of the air inlet 111 of the nozzle body 110 is larger than the outer diameter of the end portion of the gas outlet 110b of the nozzle body 110, so that when the end portion of the gas outlet 110b of the nozzle body 110 is screwed into the air inlet of the air inlet channel 201, the portion of the air inlet 111 of the nozzle body 110 abuts against the lower end surface of the air inlet channel 201. So that the depth of the nozzle body 110 into the intake passage 201 can be limited.
In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.
The term "vertical" is also used in the present description and claims to mean substantially in the vertical direction, not limited to only the vertical direction, but also slightly inclined with respect to the vertical direction.
The term "radial" is also used in the present description and claims to mean substantially in an inward-outward direction, not limited to a radial direction only through the center of a circle, but also slightly offset from the radial direction.
Claims (16)
1. A nozzle for a burner, comprising:
A tubular nozzle body (110) having a flow passage extending in a longitudinal direction therein, a head end of the flow passage having a gas inlet (110 a) for gas supply input, a tail end of the flow passage having a gas outlet (110 b) for gas output from the flow passage, and a sidewall of the flow passage between the head and tail ends being provided with a gas inlet (111) penetrating through a wall thickness to communicate the flow passage with the outside;
It is characterized in that the method also comprises the following steps:
And the retainer ring (120) is circumferentially sleeved on the periphery of the nozzle main body (110) and at least partially shields the air inlet (111), and the retainer ring (120) is arranged to be capable of moving away from the air inlet (111) along the length direction of the nozzle main body (110) under the action of external force, so that shielding of the air inlet (111) is reduced.
2. The nozzle of claim 1, wherein: at least a part of the flow path upstream of the air inlet (111) is a constriction (112) along the flow direction of the fuel gas from the fuel gas inlet (110 a) to the fuel gas outlet (110 b), and the flow area of the constriction (112) in cross section is gradually reduced along the flow direction of the fuel gas.
3. A nozzle as claimed in claim 2, wherein: the part of the flow channel, which is positioned at the downstream of the contraction section (112) and at the upstream of the air inlet (111), is an injection section (113), and the flow area of the injection section (113) on the cross section is unchanged along the flow direction of the fuel gas and is consistent with the flow area of the small end of the contraction section (112).
4. A nozzle according to claim 3, wherein: the injection section (113) of the flow channel is connected with the part of the air inlet (111) of the flow channel through the expansion section (114), and the flow area of the expansion section (114) on the cross section is gradually increased along the flowing direction of the fuel gas.
5. The nozzle of claim 4, wherein: the length of the expansion section (114) is less than the length of the contraction section (112).
6. A nozzle according to claim 3, wherein: at least part of the flow passage located downstream of the air inlet (111) is a diffuser (115), and the flow area of the diffuser (115) in the cross section is gradually increased along the flow direction of the fuel gas.
7. The nozzle of claim 6, wherein: the small end of the diffusion section (115) is connected with the part where the air inlet (111) of the flow channel is located through a throat section (116), and the flow area on the cross section of the throat section (116) is unchanged along the flow direction of fuel gas and is consistent with the flow area of the small end of the diffusion section (115).
8. The nozzle of claim 7, wherein: the throat section (116), diffuser section (115) and injection section (113) are coaxially arranged.
9. The nozzle of any one of claims 1 to 8, wherein: at least two air inlets (111) are arranged at intervals along the circumferential direction.
10. The nozzle of any one of claims 1 to 8, wherein: the air inlet (111) is located at a central position in the longitudinal direction of the nozzle body (110).
11. The nozzle of any one of claims 1 to 8, wherein: the outer peripheral wall of the nozzle main body (110) is provided with external threads, and the inner ring wall of the retainer ring (120) is provided with matched internal threads, so that the retainer ring (120) is in threaded connection with the nozzle main body (110).
12. A combustion system with a nozzle according to any of claims 1-11, further comprising a burner (200) with an inlet channel (201), the gas outlet (110 b) of the nozzle body (110) being in communication with the inlet of the inlet channel (201).
13. The combustion system of claim 12, wherein: the end of the nozzle body (110) where the gas outlet (110 b) is located is inserted into the gas inlet of the gas inlet channel (201), and the gas inlet (111) of the nozzle body (110) and the retainer ring (120) are located outside the gas inlet channel (201).
14. The combustion system of claim 13, wherein: the end of the nozzle body (110) where the gas outlet (110 b) is located is screwed into the gas inlet of the gas inlet channel (201).
15. The combustion system of claim 13, wherein: the outer diameter of the end of the nozzle body (110) where the gas outlet (110 b) is located is smaller than the outer diameter of the portion of the nozzle body (110) where the gas inlet (111) is located.
16. The combustion system of claim 12, wherein: the combustion system is used for a kitchen range.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220958470U true CN220958470U (en) | 2024-05-14 |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |