CN107339697B - Nozzle of gas stove - Google Patents
Nozzle of gas stove Download PDFInfo
- Publication number
- CN107339697B CN107339697B CN201710265687.5A CN201710265687A CN107339697B CN 107339697 B CN107339697 B CN 107339697B CN 201710265687 A CN201710265687 A CN 201710265687A CN 107339697 B CN107339697 B CN 107339697B
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- CN
- China
- Prior art keywords
- flow control
- control hole
- nozzle
- gas
- tail end
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
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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
- F23D14/70—Baffles or like flow-disturbing devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a nozzle of a gas stove, which comprises a body (1) and a flow control hole (12) arranged in the body (1), wherein the body (1) is provided with a gas outlet of which the radial size is gradually increased along the gas outlet direction at the gas outlet end of the flow control hole (12), and the nozzle is characterized in that: the air outlet is provided with at least three spiral grooves (14) or convex ribs (15) which are radially arranged by taking the flow control hole (12) as the center on the peripheral wall (13). Compared with the prior art, the invention has the advantages that: through set up the structure that expands the passageway and set up spiral groove or protruding muscle in the nozzle, make the air current receive the restriction of wall to force to produce rotatoryly, make the contact surface grow of gas and air, rotatory gas air current can be more the entrainment air and mix rather than, improve the thermal efficiency of combustion gas, reduce flue gas emission.
Description
Technical Field
The invention relates to the field of gas stoves, in particular to a nozzle of a gas stove.
Background
The nozzle structure of the existing gas stove is single, the circular hole design of the drilling mode is basically adopted, for example, the Chinese invention with the application number of 201120430540.5 discloses a manual air door adjusting device of a gas stove, which comprises a nozzle, a Venturi injection pipe with an air door hole at the end part and an air door sheet for plugging the air door hole, wherein the end surface of the Venturi injection pipe with the air door hole is provided with a middle transverse baffle, the nozzle is tubular, the rear end of the nozzle is detachably and fixedly connected with the middle transverse baffle, the front end of the nozzle is provided with a limiting step, the air door sheet is sleeved on the nozzle in a threaded manner, and the outer surface of the nozzle between the end surface of the Venturi injection pipe and the limiting step of the nozzle is provided with external threads. The circular hole structure of the nozzle limits the guiding capacity of primary air, the air and fuel gas are not uniformly mixed, and the heat efficiency of the burner is low.
Disclosure of Invention
The invention aims to provide a nozzle for enhancing the mixing of gas and air and improving the combustion efficiency aiming at the technical current situation.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a nozzle of gas-cooker, includes the body and locates the flow control hole in the body, the body has the gas outlet along giving vent to anger the radial dimension crescent in the direction of giving vent to anger at the end of giving vent to anger in flow control hole, its characterized in that: the peripheral wall of the air outlet is provided with at least three spiral grooves or convex ribs which are radially arranged by taking the flow control hole as the center.
Further, the longitudinal dimension and the transverse dimension of the groove or the rib can be gradually increased or gradually reduced or uniformly equal from the starting end to the tail end of the groove or the rib.
In order to reduce the wall resistance, the cross section of the groove or the convex rib is semicircular, and the longitudinal dimension and the transverse dimension of the groove or the convex rib are gradually increased from the starting end to the tail end.
In order to enable the sprayed gas to generate the optimal rotating effect, a first included angle is formed by the connecting line between the center of the flow control hole and the center of the starting end circle and the center of the tail end circle of the groove or the convex rib on the orthographic projection of the plane where the end edge of the gas outlet of the body is located, and the first included angle is 15-23 degrees.
In order to reduce the contact area as much as possible, reduce energy loss and ensure sufficient rotational diffusion of the air flow, the depth of the tail end of the groove can be 0.6-1 time of the diameter of the flow control hole, and the width of the tail end of the groove can be 1-1.4 times of the diameter of the flow control hole.
In order to reduce the contact area as much as possible, reduce the energy loss and ensure the sufficient rotational diffusion of the airflow, the height of the tail end of the convex rib can be 1 to 1.3 times of the diameter of the flow control hole, and the width of the tail end of the convex rib can be 0.7 to 1.1 times of the diameter of the flow control hole.
In order to increase the contact area between the gas and the air, a second included angle is formed on the circumferential wall of the gas outlet on the section along the axial direction of the flow control hole, and the size of the second included angle is 3-3.5 times of the size of a diffusion angle of the gas sprayed by a nozzle of the gas stove.
Preferably, in order to ensure the rotation of the fluid and reduce the surface area and thus the loss of kinetic energy, the number of the grooves or the ribs can be 3 to 8.
In order to increase the kinetic energy of the gas so that the fluid has a sufficient guide distance to be spread out by effective rotation, the straight distance from the flow control hole to the end of the groove may be 5 to 7 times the diameter of the flow control hole.
In order to increase the kinetic energy of the fuel gas and enable the fluid to have enough guiding distance so that the fluid can effectively rotate and diffuse out, the straight distance from the flow control hole to the tail end of the convex rib is 7-9 times of the diameter of the flow control hole.
Compared with the prior art, the invention has the advantages that: through set up the structure that expands the passageway and set up spiral groove or protruding muscle in the nozzle, make the air current receive the restriction of wall and force to produce rotatoryly, make the contact surface grow of gas and air, rotatory gas air current can be more the entrainment air and rather than mix, improve the thermal efficiency of combustion gas, reduce the fume emission.
Drawings
Fig. 1 is an overall view illustrating a first embodiment of a nozzle of a gas range according to the present invention;
fig. 2 is a plan view of a first embodiment of a nozzle of a gas range of the present invention;
fig. 3 is a sectional view of a first embodiment of a nozzle of a gas range according to the present invention;
FIG. 4 is an overall view of a second embodiment of a nozzle of a gas range according to the present invention;
FIG. 5 is a plan view of a second embodiment of a nozzle of a gas range according to the present invention;
fig. 6 is a sectional view of a second embodiment of a nozzle of a gas range according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the following examples of the drawings.
Example one
As shown in fig. 1, 2 and 3, the nozzle of the gas stove in the embodiment includes a body 1 and a flow control hole 12 provided in the body 1.
The body 1 has an outlet at the outlet end of the flow control device 12 with a gradually increasing radial dimension in the direction of the outlet, forming an expanded channel. The air outlet is provided with at least three spiral grooves 14 which are radially arranged by taking the flow control hole 12 as the center on the peripheral wall 13, in order to enable the rotating effect of the gas airflow jet jetted by the collision nozzle to reach the best, the number of the grooves 14 is 3-8, and the number of the grooves in the embodiment is 8.
The flow rate of the fuel gas is directly related to the kinetic energy of the fuel gas, so that the height and the angle of the gas outlet and the design of the groove 14 or the protrusion 15 are different according to the flow rate. The cross section of the groove 14 is semicircular, the width and the depth of the groove 14 are gradually increased from the starting end to the tail end, a second included angle alpha (namely the taper of the gas outlet) is formed on the axial cross section of the peripheral wall 13 of the gas outlet along the flow control hole 12, and the size of the second included angle alpha is set according to a gas diffusion angle (determined by a specific gas diffusion model) and is 3-3.5 times of the size of the diffusion angle of gas sprayed by a nozzle of a gas stove. If the second included angle α is too large, an excessive ratio of the final exit of the gas from the nozzle to the diameter Φ of the flow control orifice 12 will result in a sharp drop in the fluid velocity too fast, e.g., loss of too much kinetic energy along the axis of the nozzle; if the second angle α is too small, the desired effect cannot be achieved and is not achieved structurally. In order to allow the fluid to have a sufficient guide distance to be effectively rotated and diffused, the straight distance a from the flow control hole 12 to the end of the groove 14 is 5 to 7 times the diameter Φ of the flow control hole 12. The center of the flow control hole 12 and the connecting line between the center of the start end circle and the center of the end circle of the groove 14 form a first included angle beta on the orthographic projection of the plane where the end edge of the air outlet of the body 1 is located, the first included angle beta is 15-23 degrees, and the airflow can be guided and diffused, so that the surface area of the airflow beam is increased and the rotation of a certain small angle is kept. The depth of the grooves 14 and the number of the grooves 14 affect the contact surface area of the fluid and the nozzle, and the larger the surface area, the larger the frictional resistance, and the larger the energy loss. In order to reduce the contact area as much as possible, reduce the energy loss and ensure the sufficient rotational diffusion of the airflow, the depth c of the tail end of the groove 14 is 0.6 to 1 time of the diameter phi of the flow control hole 12, and the width d of the tail end of the groove 14 is 1 to 1.4 times of the diameter phi of the flow control hole 12.
Example two
As shown in fig. 4, 5, and 6, the present embodiment is different from the above embodiments in that: the peripheral wall 13 has a plurality of spiral ribs 15 radially arranged around the flow control hole 12, and the number of the ribs 15 in this embodiment is 8. The connecting line between the center of the flow control hole 12 and the center of the start end and the end of the convex rib 15 forms a first included angle gamma on the orthographic projection of the plane where the end edge of the air outlet of the body 1 is located, and the first included angle gamma is 15-23 degrees. The height of the ribs 15 and the number of the ribs 15 affect the contact surface area of the fluid and the nozzle, and the larger the surface area, the larger the frictional resistance, and the larger the energy loss. In order to reduce the contact area as much as possible, reduce the energy loss and ensure the sufficient rotational diffusion of the airflow, the height e of the convex rib at the tail end of the convex rib 15 is 1 to 1.3 times of the diameter phi of the flow control hole 12, and the width f of the tail end of the convex rib 15 is 0.7 to 1.1 times of the diameter phi of the flow control hole 12. In order to ensure that the fluid has enough guiding distance to effectively rotate and diffuse the fluid, the straight distance b from the flow control hole 12 to the tail end of the convex rib 15 is 7-9 times of the diameter phi of the flow control hole.
The structure of the groove 14 or the rib 15 in the invention adopts a round structure for reducing the wall resistance, and can also be other structures such as a square structure, and the longitudinal size and the transverse size of the groove 14 or the rib 15 can be gradually increased or gradually reduced or uniformly equal from the starting end to the tail end.
Claims (8)
1. The utility model provides a nozzle of gas-cooker, includes body (1) and locates flow control hole (12) in body (1), body (1) have along the gas outlet of giving vent to anger the gas outlet of radial dimension crescent in flow control hole (12) end, its characterized in that: the gas outlet is provided with at least three spiral grooves (14) or convex ribs (15) which are radially arranged by taking the flow control hole (12) as the center on the peripheral wall (13), the cross section of each groove (14) or convex rib (15) is semicircular, the center of each flow control hole (12) and a connecting line between the circle center of the starting end and the circle center of the tail end of each groove (14) or convex rib (15) form a first included angle (beta; gamma) on the orthographic projection of the plane where the gas outlet end edge of the body (1) is located, and the first included angle (beta; gamma) is 15-23 degrees.
2. The nozzle of a gas range according to claim 1, wherein: the longitudinal size and the transverse size of the grooves (14) or the ribs (15) are gradually increased or gradually reduced or uniformly equal from the starting end to the tail end of the grooves (14) or the ribs (15).
3. The nozzle of a gas range according to claim 2, wherein: the depth (c) of the tail end of the groove (14) is 0.6 to 1 time of the diameter (phi) of the flow control hole (12), and the width (d) of the tail end of the groove (14) is 1 to 1.4 times of the diameter (phi) of the flow control hole (12).
4. The nozzle of a gas range according to claim 1, wherein: the height (e) of the tail end of the convex rib (15) is 1 to 1.3 times of the diameter (phi) of the flow control hole (12), and the width (f) of the tail end of the convex rib (15) is 0.7 to 1.1 times of the diameter (phi) of the flow control hole (12).
5. The nozzle of the gas range according to any one of claims 1 to 4, wherein: and a second included angle (alpha) is formed on the axial section of the peripheral wall (13) of the air outlet along the flow control hole (12), and the size of the second included angle (alpha) is 3 to 3.5 times of the diffusion angle of the gas sprayed by the nozzle of the gas stove.
6. The nozzle of the gas range according to any one of claims 1 to 4, wherein: the number of the grooves (14) or the ribs (15) is 3 to 8.
7. The nozzle of the gas range according to any one of claims 1 to 4, wherein: the linear distance (a) from the flow control hole (12) to the tail end of the groove (14) is 5 to 7 times of the diameter (phi) of the flow control hole (12).
8. The nozzle of the gas range according to any one of claims 1 to 4, wherein: the linear distance (b) from the flow control hole (12) to the tail end of the convex rib (15) is 7 to 9 times of the diameter (phi) of the flow control hole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710265687.5A CN107339697B (en) | 2017-04-21 | 2017-04-21 | Nozzle of gas stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710265687.5A CN107339697B (en) | 2017-04-21 | 2017-04-21 | Nozzle of gas stove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107339697A CN107339697A (en) | 2017-11-10 |
| CN107339697B true CN107339697B (en) | 2022-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710265687.5A Active CN107339697B (en) | 2017-04-21 | 2017-04-21 | Nozzle of gas stove |
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| Country | Link |
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| CN (1) | CN107339697B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2717549A1 (en) * | 2017-12-21 | 2019-06-21 | Bsh Electrodomesticos Espana Sa | INJECTOR DEVICE FOR A GAS BURNER OF A DOMESTIC APPLIANCE, GAS BURNER, AND DOMESTIC APPLIANCES (Machine-translation by Google Translate, not legally binding) |
| CN108649245B (en) * | 2018-04-28 | 2020-12-08 | 武汉华科福赛新能源有限责任公司 | Combustion chamber of solid oxide fuel cell and automatic temperature control method thereof |
| CN113231216B (en) * | 2021-06-06 | 2024-07-26 | 际华三五一四制革制鞋有限公司 | Multicomponent polymer mixed spiral jet device |
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2017
- 2017-04-21 CN CN201710265687.5A patent/CN107339697B/en active Active
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| Publication number | Publication date |
|---|---|
| CN107339697A (en) | 2017-11-10 |
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