CN213051125U

CN213051125U - Long-distance air nozzle

Info

Publication number: CN213051125U
Application number: CN202021785376.5U
Authority: CN
Inventors: 王国志; 曹年欢; 谭元文
Original assignee: Southwest Jiaotong University
Current assignee: Southwest Jiaotong University
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-04-27
Anticipated expiration: 2030-08-24

Abstract

The utility model discloses a long distance air nozzle relates to air nozzle technical field, include: the inner chamber, the interval sets up the exocoel outside the inner chamber and the rectification chamber of intercommunication inner chamber and exocoel, be equipped with the air inlet on the outer wall of inner chamber, the exocoel is equipped with the direction chamber that extends to the direction of keeping away from the exocoel, the direction chamber sets up the both ends at the exocoel with the rectification chamber relatively, the one end that the exocoel was kept away from in the direction chamber is equipped with the gas outlet, the cross section size that the direction chamber arrived the gas outlet reduces gradually, this air nozzle can make the air current even steady.

Description

Long-distance air nozzle

Technical Field

The utility model relates to an air nozzle technical field, concretely relates to long distance air nozzle.

Background

The air nozzle has the applications of dewatering, dedusting, cooling and the like, and comprises the cleaning of a conveyer belt, the drying or cleaning of products, the cooling and the like of parts. However, the general air nozzle has a short spray distance, can only be used in short-distance working conditions, and is not suitable for long-distance working conditions. The main reason is that the internal structure of the air nozzle is limited, which causes uneven airflow and causes large energy loss, thereby causing short spraying distance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a long distance air nozzle, this air nozzle can make the air current even steady, reduces energy loss, improves jet distance.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

a long-reach air nozzle, comprising: the outer cavity is provided with a guide cavity extending towards the direction far away from the outer cavity, the guide cavity is arranged at one end of the outer cavity far away from the rectification cavity, the end of the guide cavity far away from the outer cavity is provided with a gas outlet, and the cross section size of the guide cavity is gradually reduced from the outer cavity to the gas outlet.

This air nozzle is provided with inner chamber and exocoel, the exocoel interval cover is established outside the inner chamber, be equipped with the rectification chamber of intercommunication exocoel and inner chamber between exocoel and the inner chamber, the one end relative with the rectification chamber is equipped with the direction chamber on the exocoel, the direction chamber extends and its cross section size reduces gradually to the one end of keeping away from the exocoel, be equipped with the air inlet on the outer wall of inner chamber, after gas gets into the inner chamber through the air inlet, get into the exocoel through rectification chamber rectification, after abundant stable in the exocoel, get into the direction chamber of the exocoel other end, through the diminishing gradually of direction chamber, compress gas with higher speed, finally spray away from the gas outlet, because the inner chamber, the rectification chamber, the stabilizing.

Further, in the preferred embodiment of the present invention, a transition chamber is further disposed between the outer chamber and the guiding chamber, and the outer walls at the two ends of the transition chamber are respectively connected to the outer walls of the outer chamber and the guiding chamber in a smooth transition manner.

The transition cavity is used for smoothly transitioning the outer cavity and the guide cavity, the outer wall of the transition cavity adopts a circular arc structure, and two ends of the transition cavity are respectively and smoothly connected with the outer walls of the outer cavity and the guide cavity.

Further, in a preferred embodiment of the present invention, the air inlet is provided with a connecting pipe extending outward.

The connecting pipe is used for connecting the air inlet of the air nozzle with other pipelines.

Further, in the preferred embodiment of the present invention, the inner cavity is a cylindrical structure, the outer cavity is a circular ring structure coaxial with the inner cavity, and the rectifying cavity is disposed along the radial extension of the inner cavity and the outer cavity.

The outer wall surfaces of the inner cavity and the outer cavity are both arc-shaped structures, the arc-shaped wall surfaces can enable gas to be more stable, and airflow in the inner cavity and the outer cavity can flow more orderly and stably through the wall attachment effect.

Further, in the preferred embodiment of the present invention, the air inlet is disposed on the upper and lower end surfaces of the inner cavity and is a circular structure concentrically disposed with the upper and lower end surfaces of the inner cavity.

The air inlet is arranged on the upper end surface and the lower end surface of the inner cavity and is arranged in the middle of the inner cavity, so that the air flow is more uniformly distributed in the inner cavity when entering the inner cavity.

The utility model discloses following beneficial effect has:

the utility model discloses set up inner chamber, rectification chamber and exocoel inside the nozzle, inner chamber, rectification chamber and exocoel form the rectification structure, and after the air current got into the inner chamber from the air inlet, at the inner chamber gathering, oppression air current got into the exocoel through the rectification chamber, and the gas outlet blowout is followed to the direction chamber of flowing through again, the utility model discloses a design rectification structure improves the homogeneity and the roughness of air current to make the energy loss of air current reduce, the jet distance increases.

Drawings

Fig. 1 is a schematic view of the overall structure of the long-distance air nozzle of the present invention;

fig. 2 is a front view of the long distance air nozzle of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

fig. 4 is a top view of the long distance air nozzle of the present invention;

fig. 5 is a sectional view B-B of fig. 4.

Wherein: 1-inner cavity; 11-an air inlet; 12-a connecting tube; 2-an outer cavity; 3-a rectification cavity; 4-a guide cavity; 41-air outlet; 5-transition chamber.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-5, a long distance air nozzle includes: inner chamber 1, interval set up outer chamber 2 outside inner chamber 1 and the rectification chamber 3 of intercommunication inner chamber 1 and outer chamber 2, inner chamber 1 is cylindric structure, and outer chamber 2 is the ring structure that sets up with inner chamber 1 coaxial line, and rectification chamber 3 sets up and rectification chamber 3's both ends communicate with inner chamber 1 and outer chamber 2 respectively along inner chamber 1 and outer chamber 2's radial extension. The outer walls of the upper end and the lower end of the inner cavity 1 are respectively provided with an air inlet 11 and a circular structure which is concentric with the upper end surface and the lower end surface of the inner cavity 1, and the air inlet 11 is provided with a connecting pipe 12. The exocoel 2 is equipped with the direction chamber 4 that extends to the direction of keeping away from exocoel 2, and the one end of rectifying chamber 3 is kept away from at exocoel 2 to direction chamber 4 setting, and the one end that exocoel 2 was kept away from to direction chamber 4 is equipped with gas outlet 41, and the cross sectional dimension of direction chamber 4 reduces from exocoel 2 to the direction of gas outlet 41 gradually, and in this embodiment, the cross section of direction chamber 4 is the rectangle the utility model discloses in other embodiments, the cross section of direction chamber 4 can also be for circular, oval or other shapes. Still be equipped with transitional cavity 5 between exocoel 2 and the direction chamber 4, the outer wall of transitional cavity 5 is convex structure, and the outer wall of 5 one ends of transitional cavity and the smooth transitional coupling of exocoel 2's outer wall, the outer wall of the 5 other ends of transitional cavity and the smooth transitional coupling of the outer wall of direction chamber 4.

The flow of the medium air flow of the air nozzle is described below with reference to fig. 1 to 5:

after the gas enters the inner cavity 1 through the gas inlet 11, the gas flow can flow along the inner wall of the inner cavity 1 under the action of the coanda effect, and the subsequent gas entering from the gas inlet 11 cannot interfere with the gas flow flowing along the inner cavity 1. Along with the gathering of gas in inner chamber 1, oppress the air current and enter outer chamber 2 through rectification chamber 3, the air current will be clung to the inner wall of outer chamber 2 and flow under the effect of attaching to the wall too, because transition chamber 5 and guide chamber 4 reduce gradually, the air current flowing along the inner wall of outer chamber 2 merges gradually, can not produce great fluctuation, and then spout from gas outlet 41. The whole air flow flows along the wall surface of the nozzle under the influence of the coanda effect in the flowing process of the nozzle, and does not generate larger interference and fluctuation, so the uniformity and the evenness of the air flow are better, and the turbulence intensity is lower. The air flow ejected from the air outlet 41 has a low turbulence intensity, and thus suffers a small air resistance and a small energy loss, so that the ejection distance is increased.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A long distance air nozzle, comprising: the air conditioner comprises an inner cavity (1), an outer cavity (2) and a rectification cavity (3), wherein the outer cavity (2) is arranged outside the inner cavity (1) at intervals, the rectification cavity (3) is communicated with the inner cavity (1) and the outer cavity (2), an air inlet (11) is formed in the outer wall of the inner cavity (1), a guide cavity (4) extending towards the direction far away from the outer cavity (2) is arranged in the outer cavity (2), the guide cavity (4) is arranged at one end, far away from the rectification cavity (3), of the outer cavity (2), an air outlet (41) is formed in one end, far away from the outer cavity (2), of the guide cavity (4), and the cross-sectional dimension of the guide cavity (4) is gradually reduced from the outer cavity (2) to the.

2. The long-distance air nozzle according to claim 1, characterized in that a transition chamber (5) is further arranged between the outer chamber (2) and the guide chamber (4), and outer walls of two ends of the transition chamber (5) are respectively in smooth transition connection with the outer chamber (2) and the outer wall of the guide chamber (4).

3. The long-range air nozzle of claim 1, wherein an outwardly extending connecting tube (12) is provided at the air inlet (11).

4. A long-distance air nozzle according to any one of claims 1 to 3, wherein the inner chamber (1) is of a cylindrical structure, the outer chamber (2) is of an annular structure coaxially arranged with the inner chamber (1), and the rectifying chamber (3) is arranged along the radial extension of the inner chamber (1) and the outer chamber (2).

5. The long-distance air nozzle according to claim 4, wherein the air inlet (11) is provided on upper and lower end surfaces of the inner chamber (1) and the air inlet (11) is a circular structure provided concentrically with the upper and lower end surfaces of the inner chamber (1).