CN110864285A - Nozzle of burner, burner with same and clothes dryer - Google Patents
Nozzle of burner, burner with same and clothes dryer Download PDFInfo
- Publication number
- CN110864285A CN110864285A CN201810991096.0A CN201810991096A CN110864285A CN 110864285 A CN110864285 A CN 110864285A CN 201810991096 A CN201810991096 A CN 201810991096A CN 110864285 A CN110864285 A CN 110864285A
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- Prior art keywords
- nozzle
- peripheral wall
- burner
- wall
- holes
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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
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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
-
- 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
- F23D14/62—Mixing devices; Mixing tubes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
The invention discloses a burner nozzle, a burner with the burner nozzle and a clothes dryer, wherein the burner nozzle comprises a body, and the body comprises: the nozzle part comprises a nozzle peripheral wall, the nozzle peripheral wall comprises a first peripheral wall and a second peripheral wall, the second peripheral wall is formed into at least one part of a conical surface, a plurality of spray holes are formed in the first peripheral wall and the second peripheral wall, and the spray holes are communicated with the nozzle cavity and the outside. According to the burner nozzle provided by the embodiment of the invention, the flame length can be reduced, the combustion efficiency of combustible gas is improved, the emission of carbon monoxide is reduced, and more use requirements can be met.
Description
Technical Field
The invention relates to the technical field of clothes dryers, in particular to a burner nozzle of a burner, the burner with the burner nozzle and the clothes dryer with the burner nozzle.
Background
In the related art, the burner of the gas clothes dryer is a horizontal burner, which mostly adopts a hemispherical nozzle, and a nozzle is opened on the surface of the hemispherical nozzle, as shown in fig. 1, because the hemispherical nozzle is designed such that the outlet direction of the nozzle at least partially faces the front end of the flame (e.g. near the end of the hemispherical nozzle), the mixed gas of the nozzle is ignited to form an axial free jet flame. Under the high-power working mode, the flame length is longer, the requirement on the installation space of the clothes dryer is larger, and the use of the burner is limited. And because the flame length of this type of combustor is longer for the carbon monoxide that produces can't in time be burnt, consequently combustion efficiency is low, and carbon monoxide emission is high, not only is unfavorable for improving the clothing drying efficiency of dryer, causes the energy waste, and carbon monoxide leaks moreover and takes place the incident easily.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, an object of the present invention is to provide a burner head that can reduce the length of flame and improve the combustion efficiency of combustible gas.
Another object of the present invention is to provide a burner having the above-mentioned nozzle tip.
Still another object of the present invention is to propose a clothes dryer having the above spray head or burner.
The nozzle head of the burner according to the embodiment of the present invention includes a body including: the nozzle comprises a nozzle peripheral wall, the nozzle peripheral wall comprises a first peripheral wall and a second peripheral wall, the second peripheral wall is formed into at least one part of a conical surface, a plurality of spray holes are formed in the first peripheral wall and the second peripheral wall, and the spray holes are communicated with the nozzle cavity and the outside.
According to the burner nozzle, due to the fact that the conical design is adopted, and the spray holes are formed in the conical surface, combustible gas can be sprayed out through the spray holes, the width of flame is increased, the length of the flame is reduced, the burning efficiency of the combustible gas is improved, the combustible gas is more fully burnt, the emission of carbon monoxide is reduced, the safety is higher, the burner nozzle is more energy-saving and environment-friendly, more use requirements can be met, and the applicability is better.
In addition, the nozzle head of the burner according to the above embodiment of the present invention may further have the following additional technical features:
according to the burner nozzle of the burner of the embodiment of the present invention, the second peripheral wall is a conical surface, and the burner nozzle further includes: the first circumferential wall is connected with the conical bottom end of the second circumferential wall, the plurality of spray holes comprise a plurality of first spray holes which are arranged on the first circumferential wall and distributed along the circumferential direction of the first circumferential wall and a plurality of second spray holes which are arranged on the second circumferential wall and distributed along the circumferential direction of the second circumferential wall, and the second spray holes are outwards inclined relative to the axial direction of the peripheral wall of the spray head and extend towards the direction of the conical top end of the second circumferential wall.
According to further embodiments of the present invention, the second peripheral wall is frustoconical, and the nozzle further comprises: the nozzle end wall is covered on the small end of the second peripheral wall, the large end of the second peripheral wall is connected with the first peripheral wall, the plurality of spray holes comprise a plurality of first spray holes which are arranged on the first peripheral wall and distributed along the circumferential direction of the first peripheral wall and a plurality of second spray holes which are arranged on the second peripheral wall and distributed along the circumferential direction of the second peripheral wall, and the second spray holes are obliquely extended outwards relative to the axial direction of the nozzle peripheral wall and towards the direction of the small end.
In some embodiments of the present invention, an inclination angle α of a central axis of the second nozzle hole with respect to an axial direction of the nozzle head portion satisfies 30 degrees ≦ α ≦ 75 degrees.
According to some embodiments of the present invention, the base angle β of the conical shape satisfies 30 degrees ≦ β ≦ 75 degrees.
According to some embodiments of the invention, a central axis of the first nozzle hole is perpendicular to an axial direction of the showerhead circumferential wall.
In some embodiments of the present invention, a central axis of the first nozzle hole is a straight line and intersects perpendicularly with a central axis of the showerhead circumferential wall, and/or a central axis of the second nozzle hole is a straight line and intersects with a central axis of the showerhead circumferential wall.
In some embodiments of the present invention, a plurality of the first injection holes are distributed in one circle at intervals in a circumferential direction of the first circumferential wall to form a first injection hole group, the first circumferential wall is provided with at least one of the first injection hole groups, a plurality of the second injection holes are distributed in one circle at intervals in a circumferential direction of the second circumferential wall to form a second injection hole group, the second circumferential wall is provided with at least one of the second injection hole groups, and in the first injection hole group and the second injection hole group which are adjacently arranged, the plurality of the first injection holes and the plurality of the second injection holes are arranged in a staggered manner in a circumferential direction of the head circumferential wall.
According to some embodiments of the invention, the showerhead end wall is not provided with through holes through its inner and outer surfaces.
In some embodiments of the present invention, the showerhead end wall is perpendicular to an axial direction of the showerhead circumferential wall, the first circumferential wall has a cylindrical surface shape, the second circumferential wall has a truncated conical surface shape, and the first nozzle hole and the second nozzle hole are each a circular hole.
The burner comprises the nozzle head of the burner, wherein the axial direction of the nozzle head is the same as the axial direction of at least the outlet section of the air mixing cavity of the air mixing part of the burner.
Furthermore, the shower nozzle portion is equipped with annular connecting portion in order to pass through connecting portion with it links to each other to mix the gas portion, the connecting portion overcoat is in mix the exit end of gas portion, be equipped with circumference location portion on the connecting portion, mix the gas portion be equipped with circumference location portion complex location cooperation portion is in order to right the shower nozzle carries out circumference location.
The clothes dryer according to an embodiment of the present invention includes the spray head of the burner according to an embodiment of the present invention or the burner according to an embodiment of the present invention.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a related art showerhead;
FIG. 2 is a schematic structural view of a showerhead according to an embodiment of the present invention;
FIG. 3 is a front view of a sprinkler according to an embodiment of the invention;
FIG. 4 is a schematic structural view of a burner according to an embodiment of the present invention;
fig. 5 is a schematic configuration diagram of a combustion system of a dryer according to an embodiment of the present invention.
Reference numerals:
a shower head 100; a combustor 200; a combustion system 300; a support base 310; a gas valve 320; a gas pipe 330; a gas nozzle 340; an ignition needle 350;
a body 110;
a connecting portion 10; a circumferential positioning portion 11;
a shower head portion 20; a head peripheral wall 21; a first peripheral wall 211; a first nozzle hole 212; a second peripheral wall 213; a second nozzle hole 214; a showerhead end wall 22;
a gas mixing section 30; a gas inlet 301; an air inlet 302; a positioning fitting portion 31; and a mounting hole 311.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The showerhead 100 of the burner 200 according to an embodiment of the present invention and the burner 200 according to an embodiment of the present invention are described below with reference to fig. 1 to 5.
Referring to fig. 2 to 4, the nozzle tip 100 of the burner 200 according to an embodiment of the present invention may include a body 110, and the body 110 may include a nozzle tip portion 20.
Specifically, as shown in fig. 2 and 3, the head part 20 may include the head peripheral wall 21, the head peripheral wall 21 may include the first peripheral wall 211 and the second peripheral wall 213, the second peripheral wall 213 may be formed to have at least a part of a conical shape, that is, the second peripheral wall 213 may extend obliquely with respect to the axial direction of the head part 20, the radial sectional area of the second peripheral wall 213 decreases in the axial direction of the head part 20, and the head 100 may be a cone-shaped head or a frustum-shaped head.
In addition, the nozzle part 20 may have a nozzle cavity, and the first and second peripheral walls 211 and 213 may have a plurality of nozzle holes (or fire holes), which may communicate the nozzle cavity with the outside. Here, the plurality of injection holes may be two, three, four, or more injection holes.
Thereby, the combustible gas enters the nozzle chamber of the nozzle portion 20 and is injected to the outside through the nozzle holes. When the combustible gas is jetted outward from the jet holes provided in the second peripheral wall 213, the second peripheral wall 213 extending obliquely extends the jetting direction of the combustible gas obliquely with respect to the axial direction of the showerhead part 20, thereby forming an oblique flame.
In the related art, the burner of the gas clothes dryer is a horizontal burner, which mostly adopts a hemispherical nozzle, and a nozzle is opened on the surface of the hemispherical nozzle, as shown in fig. 1, because the hemispherical nozzle is designed such that the outlet direction of the nozzle at least partially faces the front end of the flame (e.g. near the end of the hemispherical nozzle), the mixed gas of the nozzle is ignited to form an axial free jet flame. Under the high-power working mode, the flame length is longer, the requirement on the installation space of the clothes dryer is larger, and the use of the burner is limited. And because the flame length of this type of combustor is longer for the carbon monoxide that produces can't in time be burnt, consequently combustion efficiency is low, and carbon monoxide emission is high, not only is unfavorable for improving the clothing drying efficiency of dryer, causes the energy waste, and carbon monoxide leaks moreover and takes place the incident easily.
In the present invention, the combustible gas flows out from the nozzle holes of the second peripheral wall 213 in an inclined manner, that is, the combustible gas flows obliquely with respect to the axial direction of the nozzle portion 20, so that a larger wake vortex low-speed region can be formed, and a combustion stabilizing effect is achieved, which is beneficial to improving the combustion efficiency and the combustion stability of the combustible gas. And the combustion temperature of the combustible gas in the low-speed zone of the wake vortex is higher, and the reaction is more violent. From this, combustible gas slant flow has increased combustible gas at the dwell time of high temperature district, makes the burning more abundant, has greatly improved combustion efficiency to effectively reduce the emission of the carbon monoxide that the incomplete burning produced, purify the fume emission, greatly reduce the safety risk when improving combustion performance.
In addition, compared with the axial free jet flame, the inclined flame formed by the oblique flowing of the combustible gas and the flame formed by the spraying of the spray holes arranged on the first peripheral wall 211 have larger radial combustion area, and the combustion effect of the combustible gas in a high-temperature region can also be improved. At a certain operating power, the inclined flame has a smaller flame length and requires less installation space. Therefore, under the condition of a certain installation space, the burner 200 with the spray head 100 according to the embodiment of the invention can meet a wider range of thermal power requirements, such as higher power use requirements, and the performance of the burner 200 can be adjusted according to the load requirements of equipment such as a clothes dryer, so that the applicability is better.
According to the nozzle 100 of the burner 200 provided by the embodiment of the invention, through the second peripheral wall 213 extending obliquely and the spray holes arranged on the first peripheral wall 211 and the second peripheral wall 213, the flame width can be increased, the flame length can be reduced, the combustion efficiency of combustible gas can be improved, the combustion is more sufficient, the emission of carbon monoxide is reduced, the safety is higher, the energy is saved, the environment is protected, more use requirements can be met, and the applicability is better.
In the present invention, the second peripheral wall 213 is formed into at least a part of a conical shape, in other words, the second peripheral wall 213 may be a part of a truncated cone shape which does not pass through a vertex of the conical shape, so that the head 100 forms a cone-type head, or the second peripheral wall 213 may be formed into a conical shape so that the head 100 forms a cone-type head.
In the embodiment of the showerhead 100 being a cone-shaped showerhead, the radial cross-sectional area of the second peripheral wall 213 decreases along the axial direction of the showerhead part 20, so that the second peripheral wall 213 has a cone top end and a cone bottom end, the first peripheral wall 211 can be connected to the cone bottom end, the cone top end is not provided with spray holes, and the flame length can be prevented from being too long due to the direct spraying of combustible gas from the axial end of the showerhead 100.
In the embodiment in which the showerhead 100 is a frustum-shaped showerhead, as shown in fig. 2 and 3, the radial sectional area of the second peripheral wall 213 decreases in the axial direction of the showerhead part 20, so that the second peripheral wall 213 has a small tip end and a large tip end. The head part 20 may further include a head end wall 22, the head end wall 22 may cover the small end of the second peripheral wall 213 to block the opening of the small end of the truncated cone shape, and the first peripheral wall 211 may be connected to the large end, so that the head 100 is formed as a mesa type head. This also prevents the combustible gas from being directly ejected from the axial end of the showerhead 100, resulting in an excessively long flame length.
In addition, the nozzle holes may include a plurality of first nozzle holes 212 and a plurality of second nozzle holes 214, the plurality of first nozzle holes 212 may be disposed on the first peripheral wall 211, the plurality of second nozzle holes 214 may be disposed on the second peripheral wall 213, the plurality of first nozzle holes 212 may be distributed along a circumferential direction of the first peripheral wall 211, the plurality of second nozzle holes 214 may be distributed along a circumferential direction of the second peripheral wall 213, and each of the first nozzle holes 212 and each of the second nozzle holes 214 communicate the nozzle chamber with the outside. Here, the plurality of first nozzle holes 212 and the plurality of second nozzle holes 214 may be two, three, four, or more.
As shown in fig. 2 and 3, the second nozzle holes 214 extend obliquely outward with respect to the axial direction of the head peripheral wall 21 and toward the tapered end or the small end of the second peripheral wall 213. Here, the extending direction of the second nozzle hole 214 may be understood as an extending direction of an axis of the second nozzle hole 214, and may also be understood as an extending direction of a hole wall surface of the second nozzle hole 214.
Therefore, the combustible gas is fully mixed in the gas mixing portion 30 of the burner 200 and then enters the nozzle cavity of the nozzle portion 20, which is beneficial to improving the combustion efficiency of the combustible gas. When the combustible gas is ejected from the first nozzle holes 212 and the second nozzle holes 214, the second peripheral wall 213 extending obliquely and the second nozzle holes 214 extending obliquely extend the ejection direction of the combustible gas obliquely outward with respect to the axial direction of the showerhead part 20 and toward the small tip end. When the plurality of spray holes are distributed along the circumferential direction of the nozzle circumferential wall 21, the combustible gas flows obliquely from a plurality of positions in the circumferential direction of the nozzle circumferential wall 21, so that a special petal-shaped flame is formed after ignition.
In an alternative embodiment of the present invention, the first nozzle hole 212 has a larger hole diameter than the second nozzle hole 214, and thus, more combustible gas can be injected through the first nozzle hole 212, thereby further increasing the area of the flame.
It can be understood that if the angle of the second nozzle holes 214 inclined relative to the axial direction of the nozzle part 20 is too small, the angle of the fuel gas flowing obliquely is too small, which results in a small range of the low-speed zone and a smaller range of the high-temperature zone of the fuel gas forming the wake vortex, and the effect of improving the combustion efficiency of the fuel gas is poor. If the angle of the second nozzle holes 214 inclined relative to the axial direction of the nozzle portion 20 is too large, the angle of the fuel gas flowing obliquely is too large, which results in too large velocity of the fuel gas flowing along the radial direction of the nozzle portion 20, and the injected fuel gas is likely to interfere with the intake air flow of the gas mixing portion 30 of the burner 200, which may cause unstable combustion flame, and even extinguish the flame.
Therefore, in the present invention, as shown in FIG. 3, the inclination angle α of the central axis of the second nozzle hole 214 with respect to the axial direction of the showerhead part 20 may satisfy 30 degrees ≦ α ≦ 75 degrees, for example, in some specific embodiments, the inclination angles α of the central axis of the second nozzle hole 214 with respect to the axial direction of the showerhead part 20 may be 35 degrees, 45 degrees, 55 degrees, 60 degrees, 70 degrees, and the like, respectively.
In addition, it can be understood that when the bottom angle β of the conical shape is too small, i.e., the inclination angle of the second peripheral wall 213 with respect to the axial direction of the showerhead part 20 is too large, and if the combustible gas flowing obliquely is to be formed, it is necessary that the extension length of the second nozzle holes 214 is long in order to guide the combustible gas, and it is necessary that the second peripheral wall 213 has a large wall thickness, which is inconvenient to process and reduces the production cost.
Thus, in the present invention, as shown in FIG. 3, the base angle β of the pyramid shape may satisfy 30 degrees ≦ β ≦ 75 degrees, for example, in some embodiments, the base angle β of the pyramid shape may be 35 degrees, 45 degrees, 55 degrees, 60 degrees, 70 degrees, and so on, respectively.
In the present invention, the central axis of the second nozzle hole 214 may be perpendicular to the tapered surface or may be inclined to the tapered surface, that is, the inclination angle α of the central axis of the second nozzle hole 214 with respect to the axial direction of the showerhead part 20 may be equal to or different from the base angle β of the tapered surface.
According to some embodiments of the present invention, as shown in fig. 2 and 3, the central axis of the first nozzle hole 212 may be perpendicular to the axial direction of the nozzle peripheral wall 21, so that the first nozzle hole 212 is easier to process and the processing process is simplified.
In the present invention, the first nozzle hole 212 and the second nozzle hole 214 may extend along a straight line or along a curved line or a broken line, and the central axes of the corresponding first nozzle hole 212 and the corresponding second nozzle hole 214 may be a straight line or a curved line or a broken line. When the central axes of the first nozzle hole 212 and the second nozzle hole 214 are straight lines, the central axes are the extending directions of the first nozzle hole 212 and the second nozzle hole 214, and when the central axes of the first nozzle hole 212 and the second nozzle hole 214 are curved lines or broken lines, the extending directions of the first nozzle hole 212 and the second nozzle hole 214 can be understood as the extending directions of the connecting lines of the innermost end and the outermost end of the curved lines or the broken lines.
Alternatively, as shown in fig. 2 and 3, the central axis of the first nozzle hole 212 may be a straight line, and the central axis of the first nozzle hole 212 may intersect perpendicularly with the central axis of the nozzle peripheral wall 21, and the combustible gas from the first nozzle hole 212 may flow in the radial direction of the nozzle portion 20, and the flame formed after ignition has a larger radial combustion area, which is beneficial to improving the combustion effect of the combustible gas in a high temperature region. Alternatively, as shown in fig. 2 and 3, the central axis of the second nozzle hole 214 may be a straight line, and the central axis of the second nozzle hole 214 may intersect the central axis of the head peripheral wall 21. The combustible gas enters the first jet holes 212 and the second jet holes 214 from the spray head cavity more smoothly, the first jet holes 212 and the second jet holes 214 are easier to process, and the appearance is more attractive.
According to some embodiments of the present invention, as shown in fig. 2-4, the plurality of first nozzle holes 212 may be distributed in a circle at intervals along a circumferential direction of the first peripheral wall 211 to form a first nozzle hole group, and the first peripheral wall 211 may be provided with at least one first nozzle hole group. The plurality of second nozzle holes 214 may be spaced apart in one turn along a circumferential direction of the second circumferential wall 213 to form a second nozzle hole group, and the second circumferential wall 213 may be provided with at least one second nozzle hole group. Therefore, the injection flux of the combustible gas can be increased, the injection effect is improved, and the combustion effect is further improved.
In addition, the plurality of injection holes in two adjacent injection hole groups may be arranged offset in the circumferential direction of the head peripheral wall 21, that is, the injection hole of one injection hole group may be located between two injection holes of the other adjacent injection hole group. Specifically, in the first and second nozzle groups disposed adjacently, the plurality of first nozzle holes 212 and the plurality of second nozzle holes 214 may be disposed staggered in the circumferential direction of the head peripheral wall 21; two adjacent first nozzle groups of the plurality of first nozzle groups may be arranged to be offset in the circumferential direction of the head circumferential wall 21; of the plurality of second nozzle groups, two adjacent second nozzle groups may be arranged to be shifted in the circumferential direction of the head circumferential wall 21. Therefore, the first spray holes 212 and the second spray holes 214 can be distributed more closely and uniformly, which is beneficial to improving the injection effect of the combustible gas.
In some embodiments of the present invention, as shown in fig. 2, the nozzle end wall 22 is not provided with a through hole penetrating through the inner surface and the outer surface thereof, that is, the nozzle end wall 22 may block the small end of the second peripheral wall 213, the combustible gas cannot directly flow out along the axial direction of the nozzle 100, the flow speed of the combustible gas along the axial direction of the nozzle portion 20 and the axial length of the combustion flame may be further reduced, the range of the wake vortex low-speed region is further increased, and the combustion efficiency of the combustible gas is improved.
In the present invention, as shown in fig. 2 and 3, the first peripheral wall 211 may have a cylindrical shape, the second peripheral wall 213 may have a truncated conical shape, the first nozzle holes 212 and the second nozzle holes 214 may have circular holes, respectively, and the head end wall 22 may be perpendicular to the axial direction of the head peripheral wall 21. The head 100 is simpler in structure, aesthetically pleasing, and easy to manufacture.
Of course, the structures of the first peripheral wall 211, the second peripheral wall 213, the first injection holes 212, the second injection holes 214, and the head end wall 22 include, but are not limited to, those shown in fig. 2 and 3. For example, in other embodiments, the radial cross-section of the first perimeter wall 211 and the second perimeter wall 213 can be triangular, square, elliptical, or multi-deformed, etc. The first nozzle hole 212 and the second nozzle hole 214 may be a triangular hole, a square hole, an elliptical hole, a polygonal hole, a special-shaped hole, or the like, respectively. The showerhead end wall 22 may be inclined to the axial direction of the showerhead peripheral wall 21, or may extend in an arc shape.
According to some embodiments of the present invention, the body 110 may further include a flame stabilizing plate, which may be protrudingly provided on the first circumferential wall 211, and which may be located on a side of the plurality of first nozzle holes 212 remote from the head end wall 22. When the combustible gas is sprayed from the first spray holes 212 and the second spray holes 214, the combustible gas has a velocity perpendicular to the axial direction of the nozzle part 20, so that the flame area along the radial direction of the nozzle part 20 is large, and the combustible gas is easily interfered by the gas inlet flow of the gas mixing part 30, so that the flame is unstable, and even the flame is extinguished. The flame stabilizing plate can separate the flame of the combustible gas from the air inlet flow of the gas mixing part 30, so that the flame combustion is more stable, and the flame is prevented from blowing out.
It should be noted that, the position of the flame stabilizing plate includes, but is not limited to, the first peripheral wall 211, in other embodiments, the body 110 further includes the connecting portion 10, and the flame stabilizing plate may also be disposed on the outer peripheral surface of the connecting portion 10, which is also within the protection scope of the present invention. In addition, the outer contour of the flame stabilizing plate can be round, square or polygonal.
As shown in fig. 4, the burner 200 according to the embodiment of the present invention includes the nozzle 100 of the burner 200 according to the embodiment of the present invention, and the axial direction of the nozzle portion 20 and the axial direction of at least the outlet section of the gas mixing chamber of the gas mixing portion 30 may be the same, so that the combustible gas in the gas mixing chamber flows more smoothly toward the nozzle portion 20. Because the nozzle 100 of the burner 200 according to the embodiment of the present invention has the above beneficial technical effects, the burner 200 according to the embodiment of the present invention can reduce the flame length, improve the combustion efficiency of the combustible gas, burn more fully, reduce the emission of carbon monoxide, have higher safety, are more energy-saving and environment-friendly, can meet more use requirements, and have better applicability.
As shown in fig. 4, the body 110 may include a connection portion 10, the connection portion 10 may be connected to the gas mixing portion 30 of the burner 200, and the connection portion 10 may be connected to the first peripheral wall 211 to enable connection of the showerhead 100 to the burner 200.
Optionally, in the present invention, the connection portion 10, the first peripheral wall 211, the second peripheral wall 213, and the showerhead end wall 22 may be integrally formed, so that the connection is firm, the airtightness is good, and the processing process may be simplified, which is beneficial to improving the production efficiency and reducing the production cost. It should be noted that, in the embodiment shown in fig. 2 and 3, the first peripheral wall 211 and the connecting portion 10 are both cylindrical, and the first peripheral wall 211 and the connecting portion 10 are connected integrally, so that the first peripheral wall 211 and the outer peripheral surface of the connecting portion 10 are in smooth transition without distinct boundary lines.
Further, as shown in fig. 2 to 4, the connection portion 10 may be formed in an annular shape, and when the nozzle 100 is installed in the burner 200, the annular connection portion 10 may be sleeved at an outlet end of the gas mixing portion 30 to achieve embedded connection between the gas mixing portion 30 and the nozzle 100, so that the connection area is large and the connection area is in surface-to-surface contact, which is beneficial to improving connection airtightness, and meanwhile, the structure is simple, and the processing process and the assembly process are simplified.
In addition, as shown in fig. 3, the connection portion 10 may be provided with a circumferential positioning portion 11, as shown in fig. 4, the air mixing portion 30 may be provided with a positioning engagement portion 31, and the positioning engagement portion 31 may engage with the circumferential positioning portion 11 to circumferentially position the spray head 100, so that the spray head 100 is more stably and reliably fixed.
In some embodiments, as shown in fig. 3 and 4, the connection part 10 may have a mounting groove opened to face away from the showerhead part 20, the mounting groove being formed as the circumferential positioning part 11. The outer peripheral surface of the gas mixing portion 30 may be connected with a mounting plate, the mounting plate extends along the axial direction of the gas mixing portion 30, and the gas mixing portion 30 may be mounted and fixed by the mounting plate. The end of the mounting plate adjacent to the showerhead 100 may be formed as a positioning fitting portion 31, and when the showerhead 100 is mounted on the burner 200, the mounting plate may be inserted into the mounting groove to realize circumferential positioning of the showerhead 100, and the mounting groove may limit axial positions of the showerhead 100 and the gas mixing portion 30, and prevent the first nozzle hole 212 from being blocked by the gas mixing portion 30 inserted into the connecting portion 10 for an excessively long distance, which is simple in structure and easy to assemble. The mounting plate may be used not only for mounting the gas mixing portion 30 but also for positioning the showerhead 100, simplifying the structure of the burner 200.
Optionally, the mounting plate may be provided with a mounting hole 311, the burner 200 may be connected to a dryer or the like through a fastener via the mounting hole 311 or positioned by a positioning column, and the mounting structure of the burner 200 is simple and firm.
According to a further embodiment of the present invention, as shown in fig. 4, the air mixing portion 30 may have a gas inlet 301 and an air inlet 302, wherein the air inlet 302 is located between the gas inlet 301 and an inlet end of the air mixing chamber of the air mixing portion 30. The gas can be sprayed to the gas mixing cavity through the gas inlet 301, a negative pressure area can be formed between the gas inlet 301 and the inlet end of the gas mixing cavity when the gas flows at a high speed, a certain proportion of external air is injected to enter the negative pressure area through the air inlet 302 and be premixed with the gas, the primarily mixed combustible gas enters the gas mixing cavity to be further mixed, then enters the nozzle cavity, and finally is sprayed out and ignited through the first spray holes 212 and the second spray holes 214.
The dryer according to an embodiment of the present invention includes the showerhead 100 of the burner 200 according to an embodiment of the present invention, or includes the burner 200 according to an embodiment of the present invention. Because the spray head 100 or the burner 200 of the burner 200 according to the embodiment of the present invention has the above-mentioned beneficial technical effects, the clothes dryer according to the embodiment of the present invention can reduce the flame length, improve the combustion efficiency of the combustible gas, burn more sufficiently, reduce the emission of carbon monoxide, have higher safety, save more energy and protect environment, improve the clothes drying efficiency, meet more use requirements, and have better applicability.
In some embodiments, as shown in fig. 5, a combustion system 300 of a dryer may include: the table body burner comprises a supporting seat 310, a gas valve 320, a gas pipe 330, a gas nozzle 340, an ignition needle 350 and a table body burner, wherein the table body burner can comprise a table-type nozzle. Wherein the stage body burner may be the burner 200 according to an embodiment of the present invention, or the stage type showerhead may be the showerhead 100 according to an embodiment of the present invention.
As shown in fig. 2 to 5, a gas valve 320, a gas pipe 330, an ignition needle 350, and the burner 200 may be installed at the support base 310, the gas pipe 330 may communicate with the gas valve 320, a gas nozzle 340 may be installed at the gas valve 320, and the gas nozzle 340 may protrude into the gas inlet 301 of the burner 200. The ignition pin 350 may be provided on the lower side of the head 100 of the burner 200 and may protrude beyond the head end wall 22 of the head 100 in a direction away from the gas mixing portion 30.
The gas passes through gas pipe 330 and gets into gas valve 320, and gas valve 320 opens and makes the gas spout into gas import 301 through gas nozzle 340, and the injection effect of gas nozzle 340 can improve the velocity of flow of gas, and then improves the injection effect to the outside air, improves the mixed effect of gas and air simultaneously. The gas flows into the gas mixing cavity from the gas inlet 301, the external air is injected to enter the gas mixing cavity, and the gas and the air flow in the gas mixing cavity along the axial direction to be fully mixed. The mixed combustible gas is sprayed from the first spray holes 212 and the second spray holes 214 of the nozzle 100, and the ignition needle 350 ignites the sprayed combustible gas to form a petal-shaped flame.
Other constructions and operations of the showerhead 100, the burner 200, and the dryer according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, references to the description of the terms "embodiment," "particular embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (13)
1. A burner tip, comprising a body, the body comprising:
the nozzle comprises a nozzle cavity, the nozzle comprises a nozzle peripheral wall, the nozzle peripheral wall comprises a first peripheral wall and a second peripheral wall, the second peripheral wall is formed into at least one part of a conical surface, a plurality of spray holes are formed in the first peripheral wall and the second peripheral wall, and the spray holes are communicated with the nozzle cavity and the outside.
2. The nozzle tip for a burner of claim 1, wherein the second peripheral wall is formed in a tapered shape, the first peripheral wall is connected to a tapered bottom end of the second peripheral wall,
the plurality of spray holes comprise a plurality of first spray holes arranged on the first peripheral wall and distributed along the circumferential direction of the first peripheral wall and a plurality of second spray holes arranged on the second peripheral wall and distributed along the circumferential direction of the second peripheral wall, and the second spray holes are obliquely extended outwards relative to the axial direction of the peripheral wall of the spray head and towards the direction of the conical top end of the second peripheral wall.
3. The burner tip of claim 1, wherein said second peripheral wall is frustoconical, said tip further comprising:
the nozzle end wall is covered on the small end of the second peripheral wall, the large end of the second peripheral wall is connected with the first peripheral wall,
the plurality of spray holes comprise a plurality of first spray holes arranged on the first circumferential wall and distributed along the circumferential direction of the first circumferential wall and a plurality of second spray holes arranged on the second circumferential wall and distributed along the circumferential direction of the second circumferential wall, and the second spray holes are obliquely extended outwards relative to the axial direction of the circumferential wall of the spray head and towards the direction of the small head end.
4. The nozzle head of a burner according to claim 2 or 3, characterized in that the inclination angle α of the center axis of the second nozzle hole with respect to the axial direction of the nozzle head portion satisfies 30 degrees ≦ α ≦ 75 degrees.
5. The nozzle tip of a burner as claimed in claim 1, wherein the bottom angle β of the conical shape satisfies 30 degrees ≦ β ≦ 75 degrees.
6. The nozzle tip of a burner according to claim 2 or 3, wherein a central axis of the first nozzle hole is perpendicular to an axial direction of the nozzle tip peripheral wall.
7. The nozzle tip of a burner according to claim 2 or 3, wherein the central axis of the first nozzle hole is a straight line and intersects perpendicularly with the central axis of the nozzle tip peripheral wall, and/or
The central axis of the second spray hole is a straight line and is intersected with the central axis of the peripheral wall of the spray head.
8. The nozzle tip for a burner according to claim 2 or 3, wherein a plurality of the first nozzle holes are distributed in a circle at intervals in a circumferential direction of the first peripheral wall to form a first nozzle hole group, the first peripheral wall being provided with at least one of the first nozzle hole groups,
the plurality of second injection holes are distributed in a circle at intervals along the circumferential direction of the second circumferential wall to form a second injection hole group, at least one second injection hole group is arranged on the second circumferential wall, and the plurality of first injection holes and the plurality of second injection holes are arranged in a staggered mode in the circumferential direction of the peripheral wall of the sprayer in the first injection hole group and the second injection hole group which are arranged adjacently.
9. A burner spray head according to claim 3, wherein the spray head end wall is not provided with through holes through its inner and outer surfaces.
10. The nozzle tip for a burner of claim 3, wherein the tip end wall is perpendicular to an axial direction of the tip circumferential wall, the first circumferential wall has a cylindrical surface shape, the second circumferential wall has a truncated conical surface shape, and the first nozzle holes and the second nozzle holes are circular holes, respectively.
11. A burner comprising a nozzle head of a burner according to any one of claims 1 to 10, the axial direction of the nozzle head being the same as the axial direction of at least the outlet section of the gas mixing chamber of the gas mixing section of the burner.
12. The burner as claimed in claim 11, wherein the nozzle part is provided with an annular connecting part to connect with the gas mixing part through the connecting part, the connecting part is sleeved on the outlet end of the gas mixing part, the connecting part is provided with a circumferential positioning part, and the gas mixing part is provided with a positioning matching part matching with the circumferential positioning part to circumferentially position the nozzle.
13. Laundry dryer, characterized in that it comprises a spray head of a burner according to any one of claims 1 to 10 or a burner according to claim 11 or 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810991096.0A CN110864285A (en) | 2018-08-28 | 2018-08-28 | Nozzle of burner, burner with same and clothes dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810991096.0A CN110864285A (en) | 2018-08-28 | 2018-08-28 | Nozzle of burner, burner with same and clothes dryer |
Publications (1)
| Publication Number | Publication Date |
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| CN110864285A true CN110864285A (en) | 2020-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810991096.0A Pending CN110864285A (en) | 2018-08-28 | 2018-08-28 | Nozzle of burner, burner with same and clothes dryer |
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| Country | Link |
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| CN (1) | CN110864285A (en) |
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