CN112197267A - Nozzle and combustor applying same - Google Patents
Nozzle and combustor applying same Download PDFInfo
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- CN112197267A CN112197267A CN202011042222.1A CN202011042222A CN112197267A CN 112197267 A CN112197267 A CN 112197267A CN 202011042222 A CN202011042222 A CN 202011042222A CN 112197267 A CN112197267 A CN 112197267A
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- nozzle
- burner
- hole
- gas
- nozzle body
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- 230000001939 inductive effect Effects 0.000 claims abstract description 31
- 238000009434 installation Methods 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 claims description 32
- 239000007924 injection Substances 0.000 claims description 32
- 230000008602 contraction Effects 0.000 claims description 21
- 239000007921 spray Substances 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 12
- 238000013517 stratification Methods 0.000 abstract description 3
- 239000003570 air Substances 0.000 description 53
- 239000007789 gas Substances 0.000 description 48
- 239000002737 fuel gas Substances 0.000 description 29
- 230000000977 initiatory effect Effects 0.000 description 15
- 230000003068 static effect Effects 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000012080 ambient air Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/70—Baffles or like flow-disturbing devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/08—Arrangement or mounting of burners
- F24C3/085—Arrangement or mounting of burners on ranges
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Abstract
本发明公开了一种喷嘴及应用其的燃烧器，该喷嘴用于燃烧器，包括喷嘴本体和贯穿设置于喷嘴本体内的燃气通道；喷嘴本体包括装配部和旋流引发部，装配部用于喷嘴本体的安装以及限位，旋流引发部与装配部连接，用于与燃烧器的引射管配合，使进入引射管的空气形成旋流。本发明通过将喷嘴本体设置为包括装配部和旋流引发部的结构，旋流引发部能够与燃烧器的引射管配合，使进入引射管的空气形成旋流，在盘旋过程中与喷嘴本体中燃气通道喷出的燃气混合，从而使空气与燃气混合的更加均匀、充分、彻底，有效避免了空气与燃气的分层现象，解决了现有燃烧器存在的燃烧火焰不稳定、燃气燃烧不充分、热效率较低的问题。
The present invention discloses a nozzle and a burner using the nozzle. The nozzle is used for a burner and includes a nozzle body and a gas channel that runs through the nozzle body. The nozzle body includes an assembly part and a swirl inducing part. The assembly part is used for the installation and positioning of the nozzle body. The swirl inducing part is connected to the assembly part and is used to cooperate with the ejector tube of the burner so that the air entering the ejector tube forms a swirl. The present invention sets the nozzle body to include an assembly part and a swirl inducing part. The swirl inducing part can cooperate with the ejector tube of the burner so that the air entering the ejector tube forms a swirl, and is mixed with the gas ejected from the gas channel in the nozzle body during the swirling process, so that the air and the gas are mixed more evenly, fully and thoroughly, effectively avoiding the stratification phenomenon of air and gas, and solving the problems of unstable combustion flame, insufficient gas combustion and low thermal efficiency existing in the existing burner.
Description
Technical Field
The invention belongs to the technical field of nozzle structures, and particularly relates to a nozzle and a combustor using the same.
Background
The nozzle is used as one of the core components of a combustion system in a gas cooker, the structure of the nozzle determines the size of a primary air coefficient, the combustion condition of the burner is also determined, and the nozzle plays a key role in the performance of the gas cooker. The existing gas stove nozzles on the market are mostly a group of injection air inlet holes, some burner nozzles are simplified and do not have injection air inlet holes, the nozzles of the structure are easy to generate air and gas layering, the primary air coefficient is small, the burner is enabled to have the condition of unstable combustion flame, the gas is not combusted sufficiently, and the heat efficiency is low.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a nozzle, which effectively solves the problem of air and fuel gas stratification generated by the conventional nozzle by providing a swirl inducing portion in a nozzle body.
The invention also aims to provide a burner applying the nozzle, which effectively solves the problems of unstable combustion flame, insufficient gas combustion and low heat efficiency of the existing burner by arranging the swirling flow inducing part in the nozzle.
The technical scheme adopted by the invention is as follows:
a nozzle for a burner comprises a nozzle body and a gas channel arranged in the nozzle body in a penetrating way;
the nozzle body comprises an assembly part and a rotational flow initiation part, the assembly part is used for installation and limiting of the nozzle body, and the rotational flow initiation part is connected with the assembly part and used for being matched with an injection pipe of a combustor to enable air entering the injection pipe to form rotational flow.
Preferably, the swirl inducing portion comprises a cylinder and a truncated cone which are connected in sequence, the cylinder is connected with the end face with the larger diameter of the truncated cone, and the other end of the cylinder is connected with the assembling portion.
Preferably, the diameter d of the cylinder is 5-10 mm.
Preferably, the assembling portion is a prism structure and comprises a prism body and a connector, the connector is arranged at an end portion, far away from the rotational flow inducing portion, of the prism body, and an external thread is arranged on the connector.
Preferably, the sum of the lengths of the prism body and the swirl inducing part is 8-12 mm.
Preferably, the gas channel comprises an air inlet hole, a contraction hole and a spray hole which are sequentially communicated and arranged along the axis direction of the nozzle body, the contraction hole is of a taper hole structure, and the air inlet hole is a cylindrical hole and is communicated with the end face with the larger diameter of the contraction hole.
Preferably, the contraction hole and the nozzle hole are arranged in the circular truncated cone body, and the contraction hole is coaxial with the circular truncated cone body.
Preferably, the angle alpha of the taper angle of the taper hole structure of the contraction hole is 45-60 degrees.
Preferably, the ratio of the length to the diameter of the spray hole is 0.8-1.2.
The invention also protects a burner which comprises a burner body, an injection pipe and the nozzle, wherein the injection pipe is arranged in the burner body, and the nozzle body is connected with the injection pipe.
Preferably, the end of the injection pipe is provided with a cavity of a cylindrical structure, and the rotational flow inducing part is opposite to a gas inlet of the cavity.
Preferably, the diameter D of the cavity is 25-40 mm, and the distance h between the end part of the rotational flow inducing part and the end part of the cavity is 15-25 mm.
The invention has the beneficial effects that: according to the invention, the nozzle body is arranged into a structure comprising the assembling part and the rotational flow inducing part, the assembling part can be used for mounting and limiting the nozzle body, the rotational flow inducing part can be matched with the injection pipe of the combustor, so that air entering the injection pipe forms rotational flow, and is mixed with fuel gas sprayed out of a fuel gas channel of the nozzle body in the spiral process, thus the air and the fuel gas are mixed more uniformly, fully and thoroughly, and the layering phenomenon of the air and the fuel gas is effectively avoided; meanwhile, the gas and air of the burner using the nozzle are mixed well, and the problems of unstable combustion flame, insufficient gas combustion and low heat efficiency of the existing burner are effectively solved.
Drawings
FIG. 1 is a structural view of a nozzle provided in example 1 of the present invention;
FIG. 2 is a top view of a nozzle provided in example 1 of the present invention;
FIG. 3 is a view showing a structure of a conventional nozzle;
FIG. 4 is a structural view of a burner provided in embodiment 2 of the present invention;
FIG. 5 is a view showing the operation of the burner provided in embodiment 2 of the present invention;
fig. 6 is a diagram illustrating an operation of a conventional nozzle applied to a combustor.
In the figure: 1. a nozzle body; 11. an assembling portion; 111. a prism body; 112. a linker; 12. a swirl flow inducing portion; 121. a cylinder; 122. a circular truncated cone; 2. a gas channel; 21. an air inlet; 22. a shrink hole; 23. spraying a hole; 3. an injection pipe; 31. a cavity.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention; that is, the specific embodiments herein are a subset of the embodiments in the present application and not all embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present invention.
Example 1
The embodiment provides a nozzle for a combustor, as shown in fig. 1 and 2, comprising a nozzle body 1 and a gas channel 2 arranged in the nozzle body 1 in a penetrating way;
the nozzle body 1 comprises an assembly part 11 and a rotational flow initiation part 12, wherein the assembly part 11 is used for installation and limitation of the nozzle body 1, and the rotational flow initiation part 12 is connected with the assembly part 11 and used for being matched with an injection pipe of a combustor to enable air entering the injection pipe to form rotational flow.
Specifically, the nozzle body 1 comprises an assembly part 11 used for being assembled with a combustor and a rotational flow initiation part 12 connected with the assembly part 11, wherein the assembly part 11 is used for installing the nozzle body 1 and limiting in the installation process, and the rotational flow initiation part 12 is used for being matched with an injection pipe of the combustor to enable air entering the injection pipe to form rotational flow;
Fig. 3 is a conventional nozzle structure, as shown in fig. 3, a group of circular channels are processed in a prism of a conventional nozzle, one section of the prism is a prism body, and the other section of the prism is processed with external threads for mounting and fixing the nozzle on a nozzle seat, the circular channels processed in the prism comprise an air inlet hole, a contraction hole and an orifice, the air inlet hole is a cylindrical hole, the contraction hole is a conical hole, fuel gas is collected from the air inlet hole to the contraction hole, static pressure of the fuel gas is changed into dynamic pressure due to change of channel area, the fuel gas is ejected at high speed through the orifice, the orifice is a small section of a right circular cylinder section and stabilizes outlet airflow, the fuel gas is ejected at high speed through the orifice into an ejector tube of a burner, namely, the fuel gas reaches a cylindrical cavity of the ejector tube of the burner and is mixed with the fuel gas ejected from the orifice, and;
however, since air is directly injected, the fuel gas and the air are easily layered, and the mixing effect is poor.
Compare in current nozzle, the nozzle of this embodiment forms the whirl when the air enters into combustor ejector pipe from whirl initiation portion 12 through the setting of whirl initiation portion 12, has effectively avoided the layering of air and gas.
As shown in fig. 1, the swirling flow inducing portion 12 includes a cylindrical body 121 and a truncated cone 122 connected in sequence, the cylindrical body 121 is connected to an end surface of the truncated cone 122 having a larger diameter, and the other end is connected to the mounting portion 11.
Specifically, the swirling flow inducing portion 12 includes a cylinder 121 and a truncated cone 122 connected in sequence, the cylinder 121 is connected to the end face of the truncated cone 122 with a larger diameter, that is, the cylinder 121 is connected to the large end of the truncated cone 122; namely, the assembling portion 11 is connected with a cylinder 121, and the end of the cylinder 121 is connected with a truncated cone 122; thus, the cylinder 121, the truncated cone 122 and the cylindrical cavity at the head of the burner ejector tube form a cyclone, and air enters the ejector tube along the wall surface of the truncated cone 122 to form a cyclone.
In a specific implementation, the diameter d of the cylinder 121 is 5-10 mm.
In a specific implementation, the truncated cone 122 is coaxial with the shrink hole 22, that is, the arc surface of the truncated cone 122 is parallel to the arc surface of the shrink hole 22.
As shown in fig. 1, the assembling portion 11 has a prism structure, and includes a prism body 111 and a connecting body 112, the connecting body 112 is disposed at an end of the prism body 111 far from the rotational flow inducing portion 12, and an external thread is disposed on the connecting body 112.
The prism body 111 is located in the middle of the nozzle body 1 for holding assembly and facilitating insertion of a special tool such as a wrench, and the connecting body 112 is located at the end of the nozzle body 1 and provided with external threads for fixing with a nozzle holder; namely, the prism body 111 is rotated by a tool during assembly, and the connecting body 112 is fixed with the nozzle holder through threads, so that the nozzle is installed and fixed.
In a specific implementation, the sum of the lengths of the prism body 111 and the swirl inducing part 12 is 8-12 mm.
That is, the sum of the heights of the prism body 111 and the swirl inducing portion 12, i.e., the length of the nozzle body 1 beyond the nozzle holder after the nozzle is mounted on the nozzle holder is 8 to 12 mm.
As shown in fig. 1, the gas channel 2 includes an air inlet 21, a contraction hole 22 and a spray hole 23 sequentially communicated with each other along the axial direction of the nozzle body 1, the contraction hole 22 is of a conical hole structure, and the air inlet 21 is a cylindrical hole and is communicated with the end face of the contraction hole 22 with a larger diameter.
The contraction hole 22 and the nozzle hole 23 are disposed in the truncated cone 122, and the contraction hole 22 is coaxial with the truncated cone 122.
In specific implementation, a chamfer of a trumpet-shaped structure communicated with the jet orifice 23 is further arranged at the end part of the gas channel 2 close to the jet orifice 23.
Specifically, the air inlet 21 is a cylindrical hole, the contraction hole 22 is a conical hole, the fuel gas is collected from the air inlet 21 to the contraction hole 22, due to the change of the channel area, the static pressure of the fuel gas is changed into dynamic pressure, the dynamic pressure is sprayed out at high speed through the spray hole 23, the spray hole 23 is a small section of straight cylindrical section, the outlet airflow is stabilized, the fuel gas is sprayed out at high speed through the spray hole 23 into the ejector pipe of the combustor, namely, the fuel gas reaches the cylindrical cavity of the ejector pipe of the combustor and is mixed with the fuel gas sprayed out from the spray hole 23, and the mixed gas reaches the head part of the combustor through the ejector pipe.
In specific implementation, the angle alpha of the taper angle of the taper hole structure of the contraction hole 22 is 45-60 degrees; the ratio of the length to the diameter of the nozzle hole 23 is 0.8 to 1.2, but the taper angle α of the constricted hole 22 and the ratio of the length to the diameter of the nozzle hole 23 are not limited to the specific numerical ranges described above.
The working principle is as follows: when the nozzle is used, gas enters the gas channel 2, namely the gas is collected from the gas inlet 21 to the shrinkage cavity 22, static pressure of the gas is changed into dynamic pressure due to change of channel area, the gas is ejected at high speed through the ejection hole 23, the ejection hole 23 is a small-section straight cylindrical section to stabilize outlet airflow, and the gas is ejected at high speed through the ejection hole 23 to an ejection pipe of a combustor;
meanwhile, high-speed ejected gas forms a negative pressure cavity in a cylindrical hole cavity of the burner ejector pipe, ambient air enters the ejector pipe along the rotational flow initiation part 12 under the action of negative pressure, namely enters the ejector pipe along the outer wall surfaces of the cylinder 121 and the truncated cone body 122, forms rotational flow in the entering process, and is mixed with gas ejected from the nozzle holes 23 in the circling process.
This embodiment is through setting up the nozzle body to the structure including assembly portion and whirl initiation portion, and assembly portion can be used for the installation and the spacing of nozzle body, and whirl initiation portion can with the cooperation of drawing of combustor penetrate the pipe, make the air that gets into and draw and penetrate the pipe form the whirl, at the in-process of spiraling and nozzle body gas passageway spun gas mixture to make more even, abundant, thorough that air and gas mix, effectively avoided the stratification phenomenon of air and gas.
Example 2
The embodiment provides a combustor, as shown in fig. 4, this combustor includes combustor body, ejector pipe 3 and embodiment 1's nozzle, ejector pipe 3 set up in the combustor is internal, nozzle body 1 with ejector pipe 3 is connected.
Specifically, a cavity 31 with a cylindrical structure is arranged at the end part of the injection pipe 3, and the rotational flow inducing part 2 is opposite to a gas inlet of the cavity 31; namely, the nozzle body 1 is installed in the nozzle holder through the connecting body 112, and the nozzle hole 23 is opposite to the gas inlet of the cavity 31 after installation;
therefore, the fuel gas enters the fuel gas channel 2, namely the fuel gas is collected to the shrinkage cavity 22 from the air inlet 21, and the static pressure of the fuel gas is changed into dynamic pressure due to the change of the channel area, and the dynamic pressure is ejected to the ejection pipe 3 of the combustor at high speed through the ejection hole 23;
simultaneously high-speed spun gas draws the cavity 31 of the cylindrical structure of penetrating pipe 3 at the combustor to form the negative pressure chamber, and surrounding air causes portion 12 to enter into along the whirl under the negative pressure effect and draws and penetrate in the pipe 3, also be along the outer wall entering of cylinder 121 and round platform body 122 and draw and penetrate pipe 3, and form the whirl at the entering in-process, at the in-process of spiraling and the gas mixture of orifice 23 spun, mix more abundant, even, thorough, avoid the layering. When the mixed gas with the gas and the air mixed fully enters the combustor to be combusted, the combustion is more stable, complete and full, and due to the full combustion, the emission of CO in the flue gas is lower, and the heat efficiency is higher.
In specific implementation, the diameter D of the cavity 31 is 25-40 mm, and the distance h between the rotational flow inducing part 2 and the cavity 31 is 15-25 mm.
Fig. 6 is a structural view of a burner to which the conventional nozzle is applied, and as shown in fig. 6, when gas enters the ejector pipe through the nozzle at a high speed, ambient air is directly ejected into the ejector pipe by the prismatic body of the conventional nozzle outside the nozzle holder; the surrounding air is directly injected into the injection pipe, so that the fuel gas and the air are easy to be layered, and the mixing effect is poor;
and the combustor of embodiment 1 is used in this embodiment, and when the air is injected into the injection pipe 3, a rotational flow is formed, and the air is mixed with the gas sprayed from the spray holes 23 in the spiral process, so that the mixing is more sufficient, uniform and thorough, the layering is avoided, and the mixing effect is good.
Meanwhile, as shown in fig. 6, after the existing nozzle is installed, the length exceeding the nozzle seat is the length of the prism body; as shown in fig. 5, in the burner of the present embodiment, the length of the nozzle body 1 of embodiment 1 beyond the nozzle holder after installation is the sum of the lengths of the prism body 111 and the swirl inducing portion 12;
therefore, when the distance between the end part of the nozzle and the end part of the injection pipe is fixed, the space around the nozzle is determined along with the distance based on the structure of the nozzle, so that the injection air quantity is also determined; when the amount of air sucked is insufficient, the primary air coefficient is low, so that the gas of the combustor is incompletely combusted, the emission amount of CO in the flue gas is too high, the environment is polluted, and meanwhile, the combustion efficiency is also reduced;
as can be seen from fig. 5 and 6, when the distance between the end of the nozzle body 1 and the end of the injection pipe 3 is constant, that is, the distance H is constant, since the swirl inducing portion 12 is provided in the nozzle body 1 of the present invention, the distance between the end of the injection pipe 3 and the nozzle seat in the burner of the present embodiment is greater than the distance of the burner using the conventional nozzle, that is, H2> H1, and the amount of air in the present embodiment is increased relative to the amount of air in the burner using the conventional nozzle, thereby directly increasing the primary air coefficient;
and the burner using the existing nozzle has less H1, which results in insufficient air intake, lower primary air coefficient, incomplete combustion of fuel gas in the burner, over-high emission of CO in flue gas, environmental pollution and reduced combustion efficiency of the burner.
The working principle is as follows: when the burner of the embodiment is used, gas is collected from the gas inlet 21 to the contraction hole 22, static pressure of the gas is changed into dynamic pressure due to change of the channel area, the dynamic pressure is ejected at a high speed through the nozzle hole 23, the nozzle hole 23 is a small section of straight cylindrical section and stabilizes outlet airflow, and the gas is ejected into the injection pipe 3 at a high speed through the nozzle hole 23;
meanwhile, the high-speed ejected fuel gas forms a negative pressure cavity in the cavity 31 of the injection pipe 3, ambient air enters the injection pipe 3 along the rotational flow inducing part 12 under the action of negative pressure, and forms rotational flow in the entering process, and the ambient air is mixed with the fuel gas ejected from the spray holes 23 in the circling process.
The burner of the embodiment is characterized in that the nozzle body comprises an assembly part and a rotational flow initiation part, the assembly part can be used for mounting and limiting the nozzle body, the rotational flow initiation part can be matched with an injection pipe of the burner, so that air entering the injection pipe forms rotational flow, and is mixed with fuel gas sprayed from a fuel gas channel of the nozzle body in a spiral process, so that the air and the fuel gas are mixed more uniformly, fully and thoroughly, and the layering phenomenon of the air and the fuel gas is effectively avoided;
meanwhile, after the nozzle of the embodiment 1 is applied to the burner of the embodiment, the amount of air sucked is increased, the primary air coefficient is effectively improved, and the gas and the air are mixed more uniformly and thoroughly, so that the combustion stability of the gas stove is improved, the emission of carbon monoxide is reduced, and the heat efficiency is improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. A nozzle for a burner, characterized by comprising a nozzle body (1) and a gas channel (2) arranged through the nozzle body (1);
the nozzle body (1) comprises an assembling portion (11) and a rotational flow inducing portion (12), the assembling portion (11) is used for installation and limitation of the nozzle body (1), the rotational flow inducing portion (12) is connected with the assembling portion (11) and used for being matched with an injection pipe of a combustor to enable air entering the injection pipe to form rotational flow.
2. The nozzle according to claim 1, characterized in that the swirl inducing portion (12) comprises a cylindrical body (121) and a truncated cone body (122) connected in sequence, the cylindrical body (121) being connected to an end face of the truncated cone body (122) having a larger diameter, and the other end being connected to the fitting portion (11).
3. The nozzle according to claim 2, wherein the diameter d of the cylinder (121) is 5-10 mm.
4. The nozzle according to claim 2, characterized in that the fitting part (11) is of a prismatic structure and comprises a prismatic body (111) and a connecting body (112), the connecting body (112) being arranged at the end of the prismatic body (111) remote from the swirl inducing part (12), the connecting body (112) being provided with an external thread.
5. The nozzle according to claim 4, characterized in that the sum of the lengths of the prism body (111) and the swirl inducing portion (12) is 8-12 mm.
6. The nozzle according to any one of claims 2 to 5, characterized in that the gas channel (2) comprises a gas inlet hole (21), a contraction hole (22) and a spray hole (23) which are sequentially communicated along the axial direction of the nozzle body (1), wherein the contraction hole (22) is of a taper hole structure, and the gas inlet hole (21) is a cylindrical hole and is communicated with the end face of the contraction hole (22) with a larger diameter.
7. The nozzle of claim 6, wherein the constricting orifice (22) and the orifice (23) are disposed within the frustum (122), and the constricting orifice (22) is coaxial with the frustum (122).
8. A nozzle according to claim 7, characterized in that the angle α of the cone angle of the cone-hole structure of the constricting orifice (22) is 45-60 °.
9. The nozzle according to claim 7, wherein the length to diameter ratio of the orifice (23) is 0.8 to 1.2.
10. The burner is characterized by comprising a burner body, an injection pipe (3) and the nozzle of any one of claims 1 to 9, wherein the injection pipe (3) is arranged in the burner body, and the nozzle body (1) is connected with the injection pipe (3).
11. A burner according to claim 10, characterized in that the end of the ejector tube (3) is provided with a cylindrical cavity (31), the swirl inducing part (2) being opposite to the gas inlet of the cavity (31).
12. A burner according to claim 11, wherein the diameter D of the cavity (31) is 25-40 mm and the distance h between the end of the swirl inducing portion (2) and the end of the cavity (31) is 15-25 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011042222.1A CN112197267A (en) | 2020-09-28 | 2020-09-28 | Nozzle and combustor applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011042222.1A CN112197267A (en) | 2020-09-28 | 2020-09-28 | Nozzle and combustor applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112197267A true CN112197267A (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011042222.1A Pending CN112197267A (en) | 2020-09-28 | 2020-09-28 | Nozzle and combustor applying same |
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| CN (1) | CN112197267A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197266A (en) * | 2020-09-28 | 2021-01-08 | 华帝股份有限公司 | Nozzle and gas stove using same |
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|---|---|---|---|---|
| CN2389301Y (en) * | 1999-07-09 | 2000-07-26 | 广州市萌芽实业总公司 | Duck mouth type burner |
| CN101191616A (en) * | 2006-11-28 | 2008-06-04 | 海尔集团公司 | Gas nozzle of blue flame gas water heater and injection device using same |
| CN110207125A (en) * | 2018-09-26 | 2019-09-06 | 华帝股份有限公司 | Nozzle for combustor and combustor |
| CN213713068U (en) * | 2020-09-28 | 2021-07-16 | 华帝股份有限公司 | Nozzle and combustor using same |
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2020
- 2020-09-28 CN CN202011042222.1A patent/CN112197267A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2389301Y (en) * | 1999-07-09 | 2000-07-26 | 广州市萌芽实业总公司 | Duck mouth type burner |
| CN101191616A (en) * | 2006-11-28 | 2008-06-04 | 海尔集团公司 | Gas nozzle of blue flame gas water heater and injection device using same |
| CN110207125A (en) * | 2018-09-26 | 2019-09-06 | 华帝股份有限公司 | Nozzle for combustor and combustor |
| CN213713068U (en) * | 2020-09-28 | 2021-07-16 | 华帝股份有限公司 | Nozzle and combustor using same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197266A (en) * | 2020-09-28 | 2021-01-08 | 华帝股份有限公司 | Nozzle and gas stove using same |
| CN112197266B (en) * | 2020-09-28 | 2025-03-04 | 华帝股份有限公司 | Nozzle and gas stove using the same |
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