Combined ejector device and use thereof

Abstract

The application provides a combined ejector device and application thereof, and a single structure of the ejector unit comprises: an outer cylinder, a front end of which is an air inlet cavity, and an air inlet is arranged on the outer wall of the middle cavity section; the inner cylinder has a gradually expanding inner cavity structure, the inner cylinder is coaxial and communicated with the cavity of the outer cylinder, a gap is arranged between the front end of the inner cylinder and the end of the air inlet cavity of the outer cylinder, and the outer side of the middle region of the inner cylinder and the middle cavity section of the outer cylinder form a space for accommodating high-pressure gas; the outer cylinder is sleeved outside the inner cylinder and fixed with the inner cylinder, normal-pressure air enters the cavity through the air inlet cavity of the outer cylinder, high-pressure gas enters the gap between the front end of the inner cylinder and the air inlet cavity of the outer cylinder and is mixed with the normal-pressure air, and the mixed air is output by being ejected. The application also provides a combined ejector device, and the ejector unit is arranged in the shell in parallel or at an angle according to requirements, so that the coverage range after fluid ejection is adjusted. The application has the advantages of simple structure, reasonable design, flexible combination according to customer requirements and the like.

Description

Technical Field

[0001] This invention relates to the field of ejector application technology, and more particularly to a combined ejector device and its application. Background Technology

[0002] An ejector transfers the kinetic energy of the ejector airflow to the entrained airflow through turbulent transport in the mixing layer between the ejector and entrained airflows, thereby increasing the total pressure of the entrained airflow. Currently, most ejectors used in engineering are large-scale, integrated structures. Air enters the ejector through the inlet, is mixed and pressurized within the cavity, and then the pressurized airflow is delivered in one direction. The airflow direction is unidirectional, and the coverage area is limited.

[0003] To suit more application scenarios and meet the needs of multi-angle and wide-range air delivery, some existing technologies have modified the ejector cavity, such as increasing the combination of 4 to 7 cavities to increase the air volume. Regardless of the modification, this type of combined ejector still has the problems of large size and limited air delivery coverage. After increasing the diffuser angle of the air outlet, the airflow tends to converge towards the center.

[0004] Therefore, how to provide a miniaturized product that can meet the requirements of large air supply area, wide coverage, and adjustable according to demand has become an urgent problem to be solved. Summary of the Invention

[0005] To address the aforementioned technical problems of existing ejectors being large in size and having limited airflow coverage, this invention provides a combined ejector device and its application. The invention primarily achieves a miniaturized ejector unit design through the cooperation of the outer and inner cylinders. Furthermore, by rationally arranging the ejector units on the housing, it meets the requirement for multi-angle, wide-coverage airflow, thereby fundamentally solving the shortcomings of existing technologies. It boasts advantages such as simple and rational structure, and flexible combination according to customer needs.

[0006] The technical means employed in this invention are as follows:

[0007] An ejector unit, comprising:

[0008] The outer cylinder has an air inlet chamber at the front end and at least one air inlet for introducing high-pressure gas on the outer wall of the middle section.

[0009] The inner cylinder has a gradually expanding inner cavity structure. The inner cylinder and the outer cylinder are coaxial and connected. There is a gap between the front end of the inner cylinder and the end of the air inlet cavity of the outer cylinder. The outer side of the middle region of the inner cylinder and the middle cavity section of the outer cylinder form a space for accommodating high-pressure gas.

[0010] The outer cylinder is sleeved on the outside of the inner cylinder and fixed to the inner cylinder. Normal pressure air enters the chamber through the air inlet of the outer cylinder, and high pressure air enters through the air inlet and mixes with the normal pressure air through the gap between the front end of the inner cylinder and the air inlet of the outer cylinder, and is ejected out together.

[0011] Furthermore, the outer cylinder includes an outer cylinder body, which is a hollow cylindrical structure. The front end of the outer cylinder body is a straight or tapered air intake chamber. The area at the rear end of the outer cylinder body that is fixed to the inner cylinder is provided with an internal thread. The inner wall side at the rear end of the outer cylinder body is sealed and fixed to the outer wall side of the inner cylinder.

[0012] Furthermore, the inner cylinder includes an inner cylinder body, the front end of the inner cylinder has an arc-shaped transition portion that matches the end of the air intake chamber, the middle region of the inner cylinder body is a mixing chamber, and the tail end of the inner cylinder body is provided with an external thread that matches the internal thread on the outer cylinder body.

[0013] Furthermore, an outer protrusion is provided on the outer wall of the portion of the inner cylinder body near the mixing chamber at the tail end. The outer protrusion is provided with a sealing groove for accommodating the sealing element. The outer wall of the inner cylinder is sealed to the inner wall of the tail end of the outer cylinder body through the sealing element.

[0014] Furthermore, the ejector unit also includes a locking member, which is fixed to the outer wall of the inner cylinder tail end to lock the outer cylinder to the outside of the inner cylinder.

[0015] The present invention also discloses a combined ejector device, the device comprising a housing and the aforementioned ejector unit, wherein at least two fixing holes are provided on the air outlet side of the housing for fixing the ejector unit, adjacent ejector units are arranged parallel or at an angle, and a high-pressure gas inlet pipe is provided on the side wall of the housing.

[0016] Furthermore, the housing has a hollow structure, and mounting and hoisting components are provided on or on the side of the housing; the air outlet side of the housing is provided with double-layer fixing plates, which are used to fix the front end and the rear end of the ejector unit respectively, and the space between the double-layer fixing plates is used to introduce high-pressure gas.

[0017] The present invention also discloses a combined ejector device, the device comprising a housing and the aforementioned ejector unit, wherein at least two fixing holes are provided on the air outlet side of the housing for fixing the ejector unit, adjacent ejector units are arranged at an angle, a nozzle for spraying water mist is provided at the front or rear of the housing, and a high-pressure air inlet pipe and a water inlet pipe are provided on the side wall of the housing.

[0018] Furthermore, the nozzles are positioned such that the sprayed water mist evenly covers the inlet of each ejector unit.

[0019] Furthermore, the housing has a hollow structure, and the housing or the side of the housing is provided with an installation and hoisting component for external fixation. The air outlet side of the housing is provided with a double-layer fixing plate, which is used to fix the front end and the rear end of the ejector unit respectively. The space between the double-layer fixing plates is used to introduce high-pressure gas.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The ejector unit designed in this invention achieves the ejection function through the structural design and cooperation of the outer cylinder and the inner cylinder, and has a simple structure and small size.

[0022] 2. The combined ejector device of the present invention uses a housing to arrange multiple ejector units parallel or at an angle as needed. The coverage area can be adjusted according to requirements. During the output process, it can form a fan-shaped airflow, a cone-shaped airflow, or other airflow patterns that match the area of ​​use. At the same time, the structure of the housing is not limited and can be adjusted according to actual working conditions, making it highly adaptable.

[0023] 3. The combined ejector device of the present invention can also be equipped with water mist nozzles according to the working conditions, and form water mist of corresponding shapes according to different arrangements of the ejector units, thereby achieving the effect of dust removal.

[0024] In summary, the technical solution of this invention can flexibly combine the ejector unit according to the actual air outlet requirements, matching the area range to achieve full coverage. The overall structure greatly reduces the size, is simple to assemble, and is highly practical. Therefore, the technical solution of this invention overcomes the shortcomings of the prior art.

[0025] For the reasons stated above, this invention can be widely applied in the field of ejector applications. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the ejector unit in Embodiment 1 of the present invention.

[0028] Figure 2 This is a schematic diagram of the ejector unit in Embodiment 2 of the present invention.

[0029] Figure 3 This is a schematic diagram of the outer cylinder in Embodiment 1 of the ejector unit of the present invention.

[0030] Figure 4 This is a schematic diagram of the outer cylinder in Embodiment 2 of the ejector unit of the present invention.

[0031] Figure 5 This is a schematic diagram of the inner cylinder of the ejector unit of the present invention.

[0032] Figure 6 This is a schematic diagram of the locking component of the ejector unit of the present invention.

[0033] Figure 7 This is a schematic diagram of the combined ejector device of the present invention, which uses a combination of 3 ejector units.

[0034] Figure 8 for Figure 7 The figure shows an isometric sectional view, in which a nozzle is provided inside the housing.

[0035] Figure 9 for Figure 7 A horizontal sectional view.

[0036] Figure 10 This is a schematic diagram of the combined ejector device of the present invention, which uses a combination of 5 ejector units.

[0037] Figure 11 This is a schematic diagram of the combined ejector device of the present invention. The diagram shows a combination of three ejector units and a cylindrical shell.

[0038] Figure 12 for Figure 11 Axonometric sectional view.

[0039] In the diagram: 1. Outer cylinder; 11. Outer cylinder body; 12. Air inlet chamber; 13. Air inlet; 14. High-pressure gas containment space; 15. First sealing groove; 16. Internal thread; 17. Inner boss; 2. Inner cylinder; 21. Inner cylinder body; 22. Inner cylinder front end; 23. Mixing chamber; 24. External boss; 25. Second sealing groove; 26. External thread; 3. Locking element; 4. External sealing element; 5. Internal sealing element; 6. Gap; 7. Housing; 8. Water inlet pipe; 9. High-pressure gas inlet pipe; 10. Nozzle. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0044] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0045] Example 1

[0046] like Figure 1As shown, the present invention provides an ejector unit, which consists of an outer cylinder 1, an inner cylinder 2, and a locking member 3, specifically:

[0047] Outer cylinder 1 (e.g.) Figure 3 As shown in the figure, the outer cylinder 1 includes an outer cylinder body 11, which is a hollow cylindrical structure and can be cylindrical. Its front end has a tapered air inlet 12, which is a slope structure extending from the end on the left of the figure to the front end of the cavity. (The structure of the air inlet 12 can also be a straight cylinder, the purpose of which is to allow the entry of normal pressure air.) The middle section of the outer cylinder body 11 is a high-pressure gas containing space 14. The outer wall of the middle section is provided with at least one air inlet 13 for introducing high-pressure gas. Depending on the actual working conditions, two or more air inlets 13 can be provided.

[0048] Figure 3 The outer cylinder body 11 at the front end of the air intake chamber 12 is also provided with threads for fixing to the outer housing. An internal thread 16 is provided in the area where the outer cylinder body 11 mates with the inner cylinder 2; an inner boss 17 is provided on the inner wall side of the tail end of the outer cylinder body 11 to mate with the outer wall of the inner cylinder 2; a first sealing groove 15 is provided on the outer wall of the outer cylinder body 11 corresponding to the inner boss 17; an outer sealing element 4 is disposed within the first sealing groove 15; the sealing structure of the outer sealing element 4 is used for sealing with the assembled housing.

[0049] Inner cylinder 2 (e.g.) Figure 5 As shown), the inner cylinder 2 includes an inner cylinder body 21 with a gradually expanding inner cavity structure. The front end 22 of the inner cylinder has an arc-shaped transition part that matches the constriction part of the air inlet 12. The transition part is curved outward. A gap 6 is provided between its front end and the end of the air inlet 12 of the outer cylinder 1. The middle region of the inner cylinder body 21 is a mixing chamber 23. A high-pressure gas containing space 14 is left between the outer side of the middle region and the middle cavity section of the outer cylinder.

[0050] The inner cylinder body 21 has an outer boss 24 on the outer wall near the mixing chamber 23 at the tail end. The outer boss 24 has a second sealing groove 25. The outer boss 24 and the inner boss 17 are sealed by the inner sealing element 5. The tail end of the inner cylinder body 21 has an outer thread 26 that mates with the inner thread 16 on the outer cylinder body 11.

[0051] The ejector unit may also include a locking element 3 (such as...) Figure 6 As shown in the figure, it engages with the external thread 26 provided on the outer wall of the tail end of the inner cylinder 2 to lock the outer cylinder 1 to the outside of the inner cylinder 2.

[0052] Example 2

[0053] like Figure 2As shown, a combined ejector device differs from Embodiment 1 in the structure of the outer cylinder 1, as detailed in [see Figure 1]. Figure 4 The outer cylinder body 11 has an unthreaded front end and omits the inner boss 17. The inner wall can be directly sealed to the outer boss 24 by the inner sealing element 5. At the same time, the structure of the first sealing groove 15 and the outer sealing element 4 on the outer wall of the outer cylinder body 11 is omitted. When sealing with the assembled shell, the sealing can be achieved by bonding or welding.

[0054] Example 3

[0055] like Figure 7 As shown, a combined ejector device includes a housing 7 and the ejector unit described above. The housing 7 is a rectangular hollow cavity structure, and the two side walls of the housing 7 are provided with mounting holes or mounting rings or other fixing structures for external fixation.

[0056] The housing 7 has three fixing holes on the air outlet side for fixing the ejector unit. The front area has three fixing plates facing at different angles, with the corresponding ejector units set at angles. The side wall of the housing has a high-pressure air inlet pipe 9.

[0057] The air outlet side of the housing 7 is provided with a double-layer fixing plate (such as...). Figure 9 As shown), the two fixing plates are used to fix the front and rear ends of the ejector unit, respectively, and the space between the two fixing plates is used to introduce high-pressure gas.

[0058] This structural design allows the output airflow to form a fan-shaped area, covering a large area to meet usage requirements.

[0059] Example 4

[0060] like Figure 8 As shown, based on Embodiment 3, a combined ejector device includes a nozzle 10 for spraying water mist inside the housing 7. A high-pressure air inlet pipe 9 and a water inlet pipe 8 are provided on the side wall of the housing 7. The nozzle 10 is positioned behind the plurality of ejector units, with the positioning ensuring that the water mist sprayed from the nozzle 10 evenly covers the inlet of each ejector unit. This design allows the airflow carrying water mist to form an angled water mist, which can be used to remove and suppress dust.

[0061] Example 5

[0062] like Figure 10As shown, a combined ejector device is provided, which, based on embodiment 3, adopts a combination of 5 ejector units. The front area supplies air in 5 directions, and the housing is fixed through fixing holes on both sides. The overall structure of the present invention is much smaller than the ejectors in the prior art. Therefore, this design is more flexible and versatile, compact and easy to arrange. It can be adapted to the site according to the needs of the location, and achieve large-area coverage air supply and dust removal.

[0063] Example 6

[0064] like Figure 11 As shown, a combined ejector device is provided. The housing 7 is a cylindrical shell, employing a combination of three ejector units. The cylinder has sidewalls fixed to the outer wall, allowing it to be suspended above the area of ​​use. The front ejector unit is fixed in three equal parts on its circular end face, and its output forms a diffused conical airflow covering the area. Figure 12 As shown, a nozzle 10 is provided inside the housing 7, which can provide water mist to achieve the purpose of air supply and dust removal.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A combined ejector device, characterized in that, The device includes a housing and an ejector unit. The ejector unit includes: The outer cylinder has an air inlet chamber at the front end and at least one air inlet for introducing high-pressure gas on the outer wall of the middle section. The inner cylinder has a gradually expanding inner cavity structure. The inner cylinder and the outer cylinder are coaxial and connected. There is a gap between the front end of the inner cylinder and the end of the air inlet cavity of the outer cylinder. The outer side of the middle region of the inner cylinder and the middle cavity section of the outer cylinder form a space for accommodating high-pressure gas. The outer cylinder is fitted over the outer side of the inner cylinder. The tail end of the outer cylinder is fixed to the tail end of the inner cylinder by a threaded connection. Normal pressure air enters the chamber through the air inlet of the outer cylinder, while high pressure air enters through the air inlet, passes through the gap between the front end of the inner cylinder and the air inlet of the outer cylinder, mixes with the normal pressure air, and is then ejected together. The housing has at least two fixing holes on the air outlet side for fixing the ejector unit. Adjacent ejector units are set at an angle. The side wall of the housing is provided with a high-pressure air inlet pipe. The airflow output by the combined ejector device forms a fan-shaped airflow area or a diffused cone-shaped airflow covering the area. The housing has a hollow structure, and mounting and hoisting components are provided on the housing or on the side of the housing; the air outlet side of the housing is provided with double-layer fixing plates, which are used to fix the front end and the rear end of the ejector unit respectively, and the space between the double-layer fixing plates is used to introduce high-pressure gas.

2. A combined ejector device, characterized in that, The device includes a housing and an ejector unit. The ejector unit includes: The outer cylinder has an air inlet chamber at the front end and at least one air inlet for introducing high-pressure gas on the outer wall of the middle section. The inner cylinder has a gradually expanding inner cavity structure. The inner cylinder and the outer cylinder are coaxial and connected. There is a gap between the front end of the inner cylinder and the end of the air inlet cavity of the outer cylinder. The outer side of the middle region of the inner cylinder and the middle cavity section of the outer cylinder form a space for accommodating high-pressure gas. The outer cylinder is sleeved on the outside of the inner cylinder. The tail end of the outer cylinder is fixed to the tail end of the inner cylinder by a threaded connection. Normal pressure air enters the chamber through the air inlet of the outer cylinder, and high pressure air enters through the air inlet and mixes with the normal pressure air through the gap between the front end of the inner cylinder and the air inlet of the outer cylinder, and is ejected out together. The housing has at least two fixing holes on the air outlet side for fixing the ejector unit. Adjacent ejector units are set at an angle. The housing has nozzles for spraying water mist at the front or rear. The housing has a high-pressure air inlet pipe and a water inlet pipe on the side wall. The airflow output by the combined ejector device forms a fan-shaped airflow area or a diffused cone-shaped airflow covering the area.

3. The combined ejector device according to claim 2, characterized in that: The housing has a hollow structure, and mounting and hoisting components are provided on the housing or on the side of the housing. The air outlet side of the housing is provided with double-layer fixing plates, which are used to fix the front end and the rear end of the ejector unit respectively. The space between the double-layer fixing plates is used to introduce high-pressure gas.

4. The combined ejector device according to claim 3, characterized in that: The nozzles are positioned such that the sprayed water mist evenly covers the inlet of each ejector unit.

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