CN214891164U - Gas nozzle, combustor and gas cooker using same - Google Patents

Abstract

The utility model discloses a gas nozzle, combustor and use its gas cooking utensils, wherein, gas nozzle includes the nozzle body, be provided with the air injection hole rather than the intercommunication on the lateral wall of nozzle body, just contained angle between the axis of air injection hole and the axis of nozzle body is 30 ~ 40 degrees, is used for making the entering air in the gas nozzle forms the whirl. The utility model discloses an contained angle that sets up the axis of an axis and nozzle body in the outside of nozzle body is 30 ~ 40 degrees and with the air orifice of nozzle body intercommunication, when using this gas nozzle, make the air that gets into in it can form an "air whirl", and this kind has "air whirl" of certain energy can be mixed more evenly and abundant with the gas in the nozzle body, like this, not only can effectual reduction air get into the resistance of nozzle when originally internal, but also make the gas burning more abundant, the effectual emission of avoiding the CO pollutant.

Description

Gas nozzle, combustor and gas cooker using same

Technical Field

The utility model belongs to the technical field of gas cooking utensils, concretely relates to gas nozzle, combustor and use its gas cooking utensils.

Background

The nozzle is an important component of a burner of the gas cooker, and is used for providing air and fuel gas required by combustion, and as a core component of a combustion system in the gas cooker, the structure of the nozzle determines the primary air coefficient and plays a critical role in the performance of the gas cooker.

The gas-cooker nozzle on the existing market is mostly a set of injection air inlet holes, and the axis of the gas injection channel of the nozzle is 90 degrees with the axis included angle of the air injection channel of the nozzle, when in use, when gas is injected into the burner in the kitchen range through the nozzle, negative pressure is formed in the injection cavity of the burner, air is driven to enter the injection cavity of the burner, at the moment, the air is injected and enters the burner in an injection mode, the 90-degree turning mode is formed, the resistance coefficient of the injection air entering the 90-degree turning mode is the largest according to the general principle of air flow power, large resistance exists when the air is absorbed and enters the nozzle, the air absorption amount can be influenced to a certain extent, when the air absorption amount is not enough, the problems that the gas is not completely combusted, the CO in the smoke is excessively discharged, the environment is polluted and the like can be caused, and meanwhile, the combustion efficiency of the burner can be reduced.

SUMMERY OF THE UTILITY MODEL

In view of this, the main object of the present invention is to provide a gas nozzle, which solves the problems of the prior art that the gas nozzle has a large resistance when the air enters the gas nozzle, and is easy to cause insufficient air intake, insufficient combustion of the gas, low combustion efficiency, high CO emission in the flue gas, and environmental pollution.

The utility model aims at providing an use above-mentioned gas nozzle's combustor still.

The utility model also aims to provide a gas cooking utensils of using above-mentioned combustor.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this: the utility model provides a gas nozzle for the combustor, includes the nozzle body, be provided with the air jet hole rather than the intercommunication on the lateral wall of nozzle body, just the contained angle between the axis of air jet hole and the axis of nozzle body is the acute angle, is used for making the entering air in the gas nozzle forms the whirl.

Preferably, an included angle between the axis of the air jet hole and the axis of the nozzle body is 30-40 degrees.

Preferably, the number of the air jet holes is at least two, and the two air jet holes are uniformly arranged on the side wall of the nozzle body.

Preferably, this gas nozzle still includes mixed pipe fitting and whirl board, mix the pipe fitting setting and hold at the end of giving vent to anger of nozzle body, the whirl board sets up between nozzle body and mixed pipe fitting and is connected with nozzle body cooperation for mix with the gas in air drainage to mixing the pipe fitting in the air orifice.

Preferably, the swirl plate comprises an annular cylinder and at least two wing plates, and the at least two wing plates are uniformly distributed outside the annular cylinder.

Preferably, at least two of the wings are each of a helical curved rise.

Preferably, the number of the wing plates is matched with the number of the air jet holes.

Preferably, a contraction hole, an orifice hole and a radiation hole are formed in one end of the nozzle body, the contraction hole, the orifice hole and the radiation hole are sequentially communicated, and the radiation hole is formed on one side close to the mixing pipe fitting.

Preferably, a straight groove is formed in the side wall of the second perforation hole, a bump is arranged on the end face of the annular cylinder in an axially extending mode, and the straight groove is connected with the bump in a matched mode.

Preferably, one side of the nozzle body, which is close to the mixing pipe fitting, is provided with an annular boss, and the diameter of an outer circle formed by at least two wing plates is smaller than that of the annular boss.

Preferably, the contraction hole is conical, the release hole is inverted conical, and the throttling hole is a straight circular hole.

Preferably, the axis of the air jet hole is parallel to the generatrix of the contraction hole.

Preferably, the outer side wall of the annular boss is provided with an external thread, the inner wall of the mixing pipe fitting is provided with an internal thread, and the external thread is matched and connected with the internal thread.

The second technical scheme of the utility model is realized like this: a combustor comprises a combustor body and the gas nozzle, wherein the gas nozzle is arranged in the combustor body.

The third technical scheme of the utility model is realized like this: a gas cooker comprises a cooker body and the burner, wherein the burner is arranged in the cooker body.

Compared with the prior art, the utility model discloses an the contained angle that sets up an axis and the axis of nozzle body in the outside of nozzle body is 30 ~ 40 degrees and the air jet orifice that communicates with the nozzle body, make the contained angle between air jet orifice and the nozzle body be less than 90 degrees like this, when using this gas nozzle, the air that gets into in it can form an "air whirl", and this kind of "air whirl" that has certain energy can be mixed with the gas in the nozzle body more evenly and abundant, like this, not only can effectually reduce the resistance when the air gets into the nozzle body, but also make the gas burning more abundant, thereby the content of CO in the flue gas has effectively been reduced, the emission of CO pollutant has been avoided, the combustion efficiency of combustor has also been promoted simultaneously, the quality and the user experience of the product of using this gas nozzle are felt; in addition, the nozzle has good practicability and high cost performance, and is worthy of being widely popularized and used.

Drawings

Fig. 1 is a schematic structural view of a perspective view of a gas nozzle provided in embodiment 1 of the present invention;

fig. 2 is a cross-sectional view of a nozzle body in a gas nozzle provided in embodiment 1 of the present invention;

fig. 3 is a bottom view of a gas nozzle provided in embodiment 1 of the present invention;

fig. 4 is an exploded view of a gas nozzle provided in embodiment 1 of the present invention;

fig. 5 is a cross-sectional view of a gas nozzle provided in embodiment 1 of the present invention;

fig. 6 is a schematic perspective view of a swirl plate in a gas nozzle provided in embodiment 1 of the present invention;

fig. 7 is a top view of a gas nozzle provided in embodiment 1 of the present invention;

fig. 8 is a perspective cross-sectional view of a nozzle body in a gas nozzle provided in embodiment 1 of the present invention;

fig. 9 is a perspective cross-sectional view of a mixing pipe in a gas nozzle provided in embodiment 1 of the present invention;

fig. 10 is a schematic view illustrating an operation principle of a gas nozzle according to embodiment 1 of the present invention.

In the figure, 1, a nozzle body, 11 air jet holes, 12 contraction holes, 13 throttling holes, 14 bleeding holes, 141 straight grooves, 15 annular bosses, 151 external threads, 16 air inlets, 2 mixing pipe fittings, 21 internal threads, 22 rotational flow areas, 23 mixing areas, 24 air outlets, 3 rotational flow plates, 31 annular cylinders, 311 bumps and 32 wing plates.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and 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.

In the description of the present invention, it should be clear that the terms "vertical", "horizontal", "longitudinal", "front", "rear", "left", "right", "up", "down", "horizontal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention, and do not mean that the device or element referred to must have a specific orientation or position, and thus, cannot be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

The embodiment 1 of the utility model provides a gas nozzle, as shown in fig. 1 and fig. 2 for the combustor, including nozzle body 1, be provided with the air jet hole 11 rather than the intercommunication on nozzle body 1's the lateral wall, just contained angle (alpha department in fig. 2) between the axis of air jet hole 11 and nozzle body 1's the axis is the acute angle, is used for making the entering air in the gas nozzle forms the whirl.

After adopting above-mentioned scheme, through the outside at nozzle body 1 set up the contained angle of its axis and nozzle body 1 axis for the acute angle and with the air jet hole 11 of nozzle body 1 intercommunication, make the contained angle between air jet hole 11 and the nozzle body 1 be less than 90 degrees like this, when using this gas nozzle, the air that gets into in it can form one kind "air whirl", and this kind has certain energy "air whirl" can be more even and abundant with the gas mixture in the nozzle body 1, thus, not only can effectually reduce the resistance when the air gets into the nozzle body, and still make more abundant of gas burning, thereby the effectual content that reduces CO in the flue gas, the emission of CO pollutant has been avoided, the combustion efficiency of combustor has also been promoted simultaneously, the quality and the user experience of the product of using this gas nozzle feel.

Further, an included angle between the axis of the air jet hole 11 and the axis of the nozzle body 1 is 30-40 degrees (preferably 30 degrees).

Like this, through setting up the contained angle between the axis with air jet hole 11 and the axis of nozzle body 1 at 30 ~ 40 degrees, make the air reach the minimum from the resistance that air jet hole 11 got into in the gas nozzle like this, and then make the abundant mixture of air and gas.

Further, as shown in fig. 1, 2 and 3, the number of the air injection holes 11 is at least two, and the two air injection holes 11 are uniformly arranged on the side wall of the nozzle body 1; the shape of the Laval nozzle hole is the same as that of the Laval nozzle in the prior art, namely, two ends of the Laval nozzle hole are conical, one end of the Laval nozzle hole is in a contraction shape, and the other end of the Laval nozzle hole is in an expansion shape.

Like this, through the air jet hole 11 that evenly sets up two at least Laval spout pass on the lateral wall of nozzle body 1, not only make entering into to nozzle body 1's inside that the air can be even, but also effectual promotion when outside air from air jet hole 11 get into the injection effect when the gas nozzle is inside, make the air can be abundant mix with the gas for the more abundant of gas burning.

Further, as shown in fig. 4 and 5, the gas nozzle further includes a mixing pipe 2 and a swirl plate 3, the mixing pipe 2 is disposed at the air outlet end of the nozzle body 1, and the swirl plate 3 is disposed between the nozzle body 1 and the mixing pipe 2 and is connected to the nozzle body 1 in a matching manner, so as to guide the air in the air injection holes 11 to the mixing pipe 2 to be mixed with the gas.

Like this, through further setting up at the one end of nozzle body 1 and mixing pipe fitting 2 and whirl plate 3, and set up whirl plate 3 between nozzle body 1 and mixing pipe fitting 2, when using this gas nozzle, the air that gets into it can form an air whirl, and this kind of air whirl with certain energy can be in mixing pipe fitting 2 of drainage under whirl plate 3's effect, make the air that gets into in the gas nozzle more even and abundant mixing with the gas in the nozzle body 1, like this, the resistance when not only can effectually reducing the air and getting into nozzle body 1, but also promoted the injection ability of gas nozzle, improved the air factor, make the gas burning more abundant, thereby the content of CO in the effectual flue gas that has reduced, avoided the emission of CO pollutant, the combustion efficiency of combustor has also been promoted simultaneously, The quality and the user experience of the product using the gas nozzle.

Further, as shown in fig. 5 and 6, the swirl plate 3 includes an annular cylinder 31, and at least two wings 32, and the at least two wings 32 are uniformly arranged outside the annular cylinder 31.

Thus, by using the swirl plate 3 composed of the annular cylinder 31 and at least two wings 32, the air in the air injection holes 11 can be sufficiently guided to the mixing pipe 2 to be mixed with the gas.

Further, as shown in fig. 6, at least two of the wings 32 each have a spiral-curve rising structure.

Like this, when using this gas nozzle, the air that gets into in it can form an air whirl, and this kind of air whirl that has certain energy can form "tornado air current", and this "tornado air current" can be with the more even and abundant of the gas mixture in the nozzle body 1, thus, resistance when not only can effectual reduction air admission nozzle body 1 in, but also promoted gas nozzle's injection ability, the primary air coefficient has been improved, make the more abundant of gas burning, thereby the effectual content that reduces CO in the flue gas, the emission of CO pollutant has been avoided, the combustion efficiency of combustor has also been promoted simultaneously, the quality and the user experience of the product of using this gas nozzle feel.

Further, as shown in fig. 7, the number of the vanes 32 is matched with the number of the air ejection holes 11.

Like this, through setting pterygoid lamina 32 and air jet hole 11 to the same number, make the air homoenergetic in each air jet hole 11 form "tornado air current" like this, and then make the air more even and abundant mix with the gas in the nozzle body 1, resistance when not only can effectual reduction air admission nozzle body 1 in, but also promoted gas jet nozzle's injection ability, the air factor has been improved, make gas combustion more abundant, thereby the effectual content that reduces CO in the flue gas, the emission of CO pollutant has been avoided.

Further, as shown in fig. 8, a contraction hole 12, an orifice 13 and a release hole 14 are provided inside one end of the nozzle body 1, the contraction hole 12, the orifice 13 and the release hole 14 are sequentially communicated, and the release hole 14 is provided near one side of the mixing pipe 2. Wherein, the contraction hole 12 is conical, the release hole 14 is inverted conical, and the throttling hole 13 is a straight round hole.

Like this, through setting up the shrinkage cavity 12 of toper form, the orifice 13 of straight round hole form and the 4 bleeder holes 14 of the shape of the inverted cone for after gas got into 4 shrinkage cavities 12 through the air inlet 17 of nozzle body 1, because the area of passage changed, the gas was become the dynamic pressure by static pressure, and spout at a high speed through orifice 13, extend 4 bleeder holes 14 conical surfaces again and flow into in mixing pipe fitting 2, and then the effectual realization can stabilize the air current in mixing pipe fitting 2, the purpose of the flow of control flow through the combustor.

Further, as shown in fig. 6 and 8, a straight groove 141 is opened on the sidewall of the radiation hole 14, a projection 311 is extended along the axial direction of the end surface of the annular cylinder 31, and the straight groove 141 is connected with the projection 311 in a matching manner.

In this way, the straight groove 141 is formed in the side wall of the perforation hole 14, and the protrusion 311 engaged with the straight groove 141 is provided on the end surface of the annular cylinder 31, so that the swirl plate 3 can be more stably connected to the nozzle body 1.

Further, as shown in fig. 4 and 8, an annular boss 15 is provided on one side of the nozzle body 1 close to the mixing pipe 2, and the diameter of the outer circle formed by the at least two wings 32 is smaller than the diameter of the annular boss 15; so that can be with the complete holding of whirl board 3 in annular boss 15, and then fine realization carries out the effect of drainage to the air.

Further, as shown in fig. 8, the height of the radiation hole 14 is lower than that of the annular boss 15; this arrangement facilitates the connection of the nozzle body 1 to the mixing tube 2.

In a specific implementation process, a hexagonal prism is arranged outside the nozzle body 1, a chamfer is arranged at the lower end of the hexagonal prism to form an annular curved surface, and a plurality of air jet holes 11 with a laval jet hole (composed of two cones, the front part is a contraction type from big to small, and the rear part is a radiation type from small to big to outward) structure are symmetrically distributed along the center of the throttle hole 13 in the normal direction of the annular curved surface; the inlets of the air ejection holes 11 are all arranged in the normal direction of the annular curved surface, and the outlets are between and communicated with the annular projection 15 and the radiation holes 14. Further, the axis of the air jet hole 11 is parallel to the generatrix of the contraction hole 12; this minimizes the resistance to air entering the gas burner.

Further, as shown in fig. 4, 5 and 8, an external thread 151 is provided on an outer side wall of the annular boss 15, an internal thread 21 is provided on an inner wall of the mixing pipe member 2, and the external thread 151 is in fit connection with the internal thread 21.

In this way, the nozzle body 1 and the mixing pipe 2 are more firmly connected by providing the external thread 151 and the internal thread 21 on the side of the annular boss 15 and the inner wall of the mixing pipe 2, respectively.

Further, as shown in fig. 9, a swirl region 22 and a mixing region 23 are sequentially arranged inside the mixing pipe fitting 2, and the swirl region 22 corresponds to the position of the swirl plate 3.

Thus, by sequentially arranging the swirl area 22 and the mixing area 23 inside the mixing pipe fitting 2, an effective space is provided for installing the swirl plate 3, and air and gas entering the gas nozzle are fully mixed in the mixing area 23 and then flow out from the gas outlet 24.

The embodiment of the utility model provides a gas nozzle's use as follows:

as shown in FIG. 10 (the direction indicated by the arrow in the figure is the gas or air inflow direction), first two protrusions 311 at the bottom end of the swirl plate 3 are aligned with the straight groove 141 on the sidewall of the radiation hole 14 on the nozzle body 1 and are clamped and fixed along the inner circumference of the annular protrusion 15 on the upper portion of the nozzle body 1, then the mixing tube 2 is sleeved on the upper portion of the nozzle body 1, the internal thread 21 at the lower end of the mixing tube 2 is screwed and connected with the external thread 151 of the annular protrusion 15 on the nozzle body 1, so that the nozzle body 1, the swirl plate 3 and the mixing tube 2 are connected into a whole, when the gas enters the contraction hole 12 from the gas inlet 16 of the nozzle body 1, passes through the throttling hole 13, is injected into the radiation hole 14 at high speed by the throttling hole 13 and flows out along the radiation hole 14, during the high-speed outflow process, a negative pressure chamber is formed in the bore of the radiation hole 14, and air outside the nozzle body 1 is forced to enter the mixing tube 2 from the air injection hole 11 (i.e. Laval nozzle), in addition, because the gas nozzle 1 is equipped with the rotational flow plate 3 inside, distribute and present the wing plate 32 that rises spirally on the rotational flow plate 3, when the air current enters the curved surface space (spiral space) between two adjacent wing plates 32, take the form of the heliciform and flow out, in addition, because the air spray orifice 11 is a Laval spray orifice, it has effects of "flow rate augmenter", the air outside the gas nozzle enters the corresponding spiral space and flows out to form a plurality of rotatory air currents through a plurality of Laval spray orifices on the body of the nozzle 1, these rotatory air currents enter the mixing chamber at a high speed under the conical surface of the conical cavity of the mixing tube 2 is oppressed, flow out through the air outlet 24 of the mixing tube 2, form a powerful tornado, the tornado air current is mixed with the gas current that is sprayed in the first step in the course of rising of circling more evenly, completely; furthermore, the utility model discloses under the effect of air orifice 11 (Laval orifice) velocity of flow amplifier, air whirl shu adds powerful, under the gas jet pulling, the tornado air current that powerful air whirl formed mixes more evenly, thoroughly with the gas stream, inspiratory air quantity is more, increase the air coefficient, effectively improve the air injection ability and the quality of nozzle, promote gas and air mixing effect, thereby improve the burning operating mode of combustor, reduce the carbon monoxide content that the burning produced, improve the thermal efficiency of gas-cooker, energy saving and emission reduction effectively.

Example 2

The embodiment 2 of the utility model provides a burner, including burner body and embodiment 1 gas nozzle, gas nozzle sets up at the burner originally in.

By applying the burner in the embodiment 1 to the existing burner, the resistance of air entering the nozzle body can be effectively reduced, the gas can be combusted more sufficiently, the content of CO in flue gas is reduced, the emission of CO pollutants is avoided, and meanwhile, the combustion efficiency of the burner, the quality of a product using the gas nozzle and the user experience are also effectively improved; in addition, the gas nozzle has good practicability and high cost performance, and is worthy of being widely popularized and used.

Example 3

The embodiment 3 of the utility model provides a gas cooking utensils, including cooking utensils body and embodiment 2 the combustor, the combustor setting is in cooking utensils body.

By applying the burner in the embodiment 2 to the existing cooker body, the quality and the often-time competitiveness of cooker products are effectively improved, and the experience of users 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 should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (15)

1. The utility model provides a gas nozzle for the combustor, its characterized in that includes nozzle body (1), be provided with air jet hole (11) rather than the intercommunication on the lateral wall of nozzle body (1), just the contained angle between the axis of air jet hole (11) and the axis of nozzle body (1) is the acute angle, is used for making the air that gets into in the gas nozzle forms the whirl.

2. A gas burner nozzle according to claim 1, characterised in that the angle between the axis of the air jet (11) and the axis of the burner body (1) is 30-40 degrees.

3. A gas burner according to claim 2, characterized in that said air nozzles (11) are laval nozzles and are at least two, said two air nozzles (11) being uniformly arranged on the side wall of the burner body (1).

4. A gas burner as claimed in claim 3, characterized in that the gas burner further comprises a mixing tube (2) and a swirl plate (3), the mixing tube (2) being arranged at the outlet end of the burner body (1), the swirl plate (3) being arranged between the burner body (1) and the mixing tube (2) and being in a fitting connection with the burner body (1) for guiding the air in the air nozzle holes (11) into the mixing tube (2) to mix with the gas.

5. A gas burner as claimed in claim 4, characterized in that said swirl plate (3) comprises an annular cylinder (31), at least two wings (32) being arranged uniformly outside the annular cylinder (31).

6. A gas burner nozzle according to claim 5, characterized in that at least two of said vanes (32) each present a spiral-curved ascending configuration.

7. A gas burner as claimed in claim 6, wherein the number of vanes (32) is adapted to the number of air jet holes (11).

8. A gas nozzle according to any one of claims 5-7, characterized in that a contraction hole (12), a throttling hole (13) and a radiation hole (14) are arranged in one end of the nozzle body (1), the contraction hole (12), the throttling hole (13) and the radiation hole (14) are communicated in sequence, and the radiation hole (14) is arranged close to one side of the mixing pipe (2).

9. The gas nozzle as claimed in claim 8, wherein a straight groove (141) is formed in the side wall of the radiation hole (14), a projection (311) is axially extended from the end surface of the annular cylinder (31), and the straight groove (141) is in fit connection with the projection (311).

10. A gas burner nozzle according to claim 9, characterized in that said burner body (1) is provided with an annular boss (15) on the side close to the mixing tube (2), and in that said at least two wings (32) form an outer circular diameter smaller than the diameter of the annular boss (15).

11. A gas burner as in claim 10, wherein said constricting orifice (12) is conical, said bleeding orifice (14) is inverted conical and said throttling orifice (13) is a straight circular orifice.

12. A gas burner as claimed in claim 11, characterised in that the axis of the air jet (11) is parallel to the generatrix of the constricting orifice (12).

13. A gas nozzle according to claim 12, wherein the outer side wall of the annular boss (15) is provided with an external thread (151), the inner wall of the mixing pipe (2) is provided with an internal thread (21), and the external thread (151) is matched and connected with the internal thread (21).

14. A burner comprising a burner body and a gas nozzle as claimed in any one of claims 1 to 13, the gas nozzle being disposed within the burner body.

15. A gas hob characterized in comprising a hob body and a burner according to claim 14, said burner being arranged in the hob body.

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