A high pressure vortex fan

Abstract

The utility model provides a kind of high pressure vortex fan, belong to fan technical field.It has solved the higher technical problems of high pressure cost of existing fan manufacturing.This high pressure vortex fan, including pump shell, vortex cavity is shaped in pump shell, blade part is contained in vortex cavity, vortex cavity has upper groove and lower groove, the outer peripheral gap of blade part is embedded in upper groove, the inner peripheral gap of blade part is embedded in lower groove, upper groove includes first upper side radial surface and second upper side radial surface, and upper side axial surface vertically connecting first upper side radial surface and second upper side radial surface, lower groove includes mutually perpendicular first lower side radial surface and first lower side axial surface, mutually perpendicular second lower side radial surface and second lower side axial surface, first upper side radial surface, second upper side radial surface, first lower side radial surface, first lower side axial surface, second lower side radial surface and second lower side axial surface are all sprayed with flocking layer.The utility model has higher output pressure and working efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of fan technology, specifically referring to a high-pressure vortex fan. Background Technology

[0002] A vortex blower, also known as a vortex fan or vortex air pump, is a type of fluid machinery that generates high-speed vortex airflow within an annular flow channel through a special impeller structure, thereby producing high output pressure. Its working principle is based on the fact that as the impeller rotates, the gas circulates and accelerates multiple times within the annular channel formed by the pump body and pump cover, ultimately outputting at high pressure and velocity. Vortex blowers are characterized by their compact structure, high pressure, and small size, and are widely used in industrial ventilation, pneumatic conveying, vacuum adsorption, environmental protection equipment, and engine crankcase ventilation.

[0003] With the increasing demands on fan performance in industrial applications, especially the growing need for high pressure, high reliability, high sealing, and explosion-proof, high-temperature, and high-dust conditions, various improved vortex fan structures are constantly emerging in existing technologies. For example, Chinese Patent Publication No. CN118912013B proposes a high-sealing, noise-reducing explosion-proof vortex fan. This fan adopts a double-pump-disc, double-impeller-chamber design, significantly improving exhaust pressure and air volume through the series operation of primary and secondary impellers. Simultaneously, its multi-stage sealing structure and anti-vibration base design enhance the overall sealing performance and operational stability, making it suitable for harsh industrial environments such as flammable and explosive environments.

[0004] However, while this solution effectively improves the overall performance of the blower, its two-stage impeller and multi-pump disc structure also leads to a complex overall structure, an increased number of parts, and consequently higher manufacturing costs and more complex assembly processes. In applications that do not require extremely high airflow but prioritize single-stage high-pressure output, this type of bi-stage design may be uneconomical due to its excessive cost. Therefore, how to further optimize the output pressure and overall performance of a single-stage vortex blower without significantly increasing its size and energy consumption, while simultaneously controlling manufacturing costs, has become a technical problem that needs to be solved in this field. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a high-pressure vortex blower.

[0006] The objective of this utility model can be achieved through the following technical solution: A high-pressure vortex blower includes a pump casing, a motor connected to the pump casing, an impeller disposed inside the pump casing, the impeller including a fixed part and a blade part, a vortex cavity formed inside the pump casing, the blade part being housed within the vortex cavity, an upper groove and a lower groove recessed on the upper and lower sides of the vortex cavity in a direction away from the vortex cavity, the outer circumferential gap of the blade part being embedded in the upper groove, the inner circumferential gap of the blade part being embedded in the lower groove, the upper groove including a first upper radial surface and a second upper radial surface, and an upper axial surface perpendicularly connecting the first upper radial surface and the second upper radial surface, the lower groove including a first lower radial surface and a first lower axial surface perpendicular to each other, a second lower radial surface and a second lower axial surface perpendicular to each other, the first upper radial surface, the second upper radial surface, the first lower radial surface, the first lower axial surface, the second lower radial surface and the second lower axial surface are all coated with a flocked layer. The flocked layer is applied using an electrostatic spraying process. The first upper radial surface, the second upper radial surface, the first lower radial surface, the first lower axial surface, the second lower radial surface, and the second lower axial surface are the key airflow contact surfaces when the impeller rotates. A flocked layer is set on these surfaces, which effectively reduces the flow loss and leakage between the high-speed airflow and the cavity wall, enhances the gas sealing and guiding properties, and makes the gas energy more concentrated for pressure boosting, thereby achieving higher output pressure and working efficiency in a single-stage impeller structure.

[0007] In the aforementioned high-pressure vortex blower, the pump casing includes an inner casing and an outer casing. The first upper radial surface, upper axial surface, first lower radial surface, and first lower axial surface are located inside the outer casing, while the second upper radial surface, second lower radial surface, and second lower axial surface are located inside the inner casing.

[0008] In the aforementioned high-pressure vortex blower, a first inlet pipe and a first outlet pipe are formed on the outer casing. The first inlet pipe and the vortex cavity are connected through a first inlet port, and the first outlet pipe and the vortex cavity are connected through a first outlet port. A first baffle is provided between the first inlet port and the first outlet port. The first baffle is provided with a first baffle surface that is flush with and connected to the first upper radial surface and the first lower radial surface. The first baffle surface is coated with a flocked layer. The first baffle surface effectively blocks the airflow between the inlet and outlet. The flocked layer on this surface effectively reduces the flow loss and leakage between the high-speed airflow and the cavity wall, enhances the gas sealing and guiding properties, and allows the gas energy to be more concentrated for pressure boosting, thereby achieving higher output pressure and working efficiency with a single-stage impeller structure.

[0009] In the aforementioned high-pressure vortex blower, a second inlet pipe and a second outlet pipe are formed on the inner shell. The second inlet pipe and the vortex cavity are connected through a second inlet port, and the second outlet pipe and the vortex cavity are connected through a second outlet port. A second baffle is provided between the second inlet port and the second outlet port. The second baffle is provided with a second baffle surface that is flush with and connected to the second upper radial surface and the second lower radial surface. The second baffle surface is coated with a flocked layer. The second baffle surface effectively blocks the airflow between the inlet and outlet. The flocked layer on this surface effectively reduces flow loss and leakage between the high-speed airflow and the cavity wall, enhances the gas sealing and guiding properties, and allows the gas energy to be more concentrated for pressure boosting, thereby achieving higher output pressure and working efficiency with a single-stage impeller structure.

[0010] In the aforementioned high-pressure vortex blower, the first air inlet pipe and the second air inlet pipe are aligned, and the first air outlet pipe and the second air outlet pipe are aligned.

[0011] In the aforementioned high-pressure vortex blower, the first air inlet pipe is connected to an external air inlet pipe, the first air outlet pipe and the second air inlet pipe are aligned, the second air inlet pipe is connected to a sealing cap, and the second air outlet pipe is externally connected to an external air outlet pipe.

[0012] Compared with existing technologies, the technical effects of this invention are as follows: 1. By setting a flocked layer on the key airflow contact surface of the vortex cavity, the flow loss and leakage between the high-speed airflow and the cavity wall are effectively reduced, enhancing the gas sealing and guiding properties, and allowing gas energy to be more concentrated for pressure boosting, thus achieving higher output pressure and working efficiency even with a single-stage impeller structure. 2. The flocked layer has excellent sound absorption and damping characteristics. Its application can effectively attenuate the noise generated by airflow turbulence and vortex shedding, while also absorbing some high-frequency mechanical vibrations, thereby significantly reducing the overall operating noise and vibration level of the fan, improving user experience and environmental friendliness. 3. This invention optimizes the flow channel performance of a single-stage fan through the surface treatment process of electrostatic spraying to form the flocked layer. With relatively simple structural improvements and lower manufacturing costs, it achieves high-pressure output performance close to or better than some complex two-stage structure fans, overcoming the problem of soaring costs caused by pursuing high performance in existing technologies, and providing better cost-effectiveness and market competitiveness. Attached Figure Description

[0013] Figure 1 This utility model is a three-dimensional Figure 1 .

[0014] Figure 2 This utility model is a three-dimensional Figure 2 .

[0015] Figure 3 This is a cross-sectional view of the present invention.

[0016] Figure 4 This is a perspective view of the outer shell of this utility model.

[0017] Figure 5 This is a three-dimensional view of the inner shell of this utility model.

[0018] Figure 6 This is an exploded view of the inner shell and outer shell of this utility model.

[0019] Drawing number markings: 1. Pump casing; 11. Vortex cavity; 12. Mounting cavity; 13. Spacer ring; 14. Upper groove; 141. First upper radial surface; 142. Second upper radial surface; 143. Upper axial surface; 15. Lower groove; 151. First lower radial surface; 152. First lower axial surface; 153. Second lower radial surface; 154. Second lower axial surface; 16. Inner shell; 161. Second air inlet pipe; 162. Second air outlet pipe ; 163. Second air inlet; 164. Second air outlet; 165. Second partition; 166. Second partition surface; 17. Outer casing; 171. First air inlet pipe; 172. First air outlet pipe; 173. First air inlet; 174. First air outlet; 175. First partition; 176. First partition surface; 2. Motor; 3. Impeller; 31. Fixing part; 32. Blade part; 4. External air inlet pipe; 5. External air outlet pipe; 6. Sealing cover. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] It should be noted that the descriptions of "up", "down", "left", "right", "top", "bottom", etc. in this utility model are defined based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] according to Figures 1 to 6 As shown, a high-pressure vortex blower includes a pump casing 1, a motor 2 connected to the pump casing 1, and an impeller 3 disposed inside the pump casing 1. The motor 2 drives the impeller 3 to rotate. The impeller 3 includes a fixing part 31 and a blade part 32. The fixing part 31 is used to fix and connect to the rotating shaft of the motor 2. A vortex cavity 11 is formed inside the pump casing 1, and the blade part 32 is housed in the vortex cavity 11. A mounting cavity 12 located inside the vortex cavity 11 and coaxial with it is also formed inside the pump casing 1, and the fixing part 31 is housed in the mounting cavity 12. The mounting cavity 12 is the same as the vortex cavity 11, but a partition ring 13 is provided between the two cavities.

[0023] like Figure 2 As shown, with Figure 2 With the view direction as a reference, the upper and lower sides of the cross-section of the vortex cavity 11 are recessed in the direction away from the vortex cavity 11, with an upper groove 14 and a lower groove 15. The outer peripheral gap of the blade portion 32 is embedded in the upper groove 14, and the inner peripheral gap of the blade portion 32 is embedded in the lower groove. The upper groove 14 includes a first upper radial surface 141 and a second upper radial surface 142, and an upper axial surface 143 that is perpendicular to the first upper radial surface 141 and the second upper radial surface 142. The lower groove 15 includes a first lower radial surface 151 and a first lower axial surface 152 that are perpendicular to each other, and a second lower radial surface 153 and a second lower axial surface 154 that are perpendicular to each other. The first upper radial surface 141, the second upper radial surface 142, the first lower radial surface 151, the first lower axial surface 152, the second lower radial surface 153 and the second lower axial surface 154 are all coated with a flocking layer. The first lower axial surface 152 and the second lower axial surface 154 are surfaces on the partition ring 13. The flocked layer is applied using an electrostatic spraying process. The first upper radial surface 141, the second upper radial surface 142, the first lower radial surface 151, the first lower axial surface 152, the second lower radial surface 153, and the second lower axial surface 154 are key airflow contact surfaces when the impeller 3 rotates. The flocked layer on these surfaces effectively reduces flow loss and leakage between the high-speed airflow and the cavity wall, enhances the gas sealing and guiding properties, and allows the gas energy to be more concentrated for pressure boosting, thereby achieving higher output pressure and working efficiency in a single-stage impeller 3 structure.

[0024] The pump housing 1 includes an inner shell 16 and an outer shell 17. A first upper radial surface 141, an upper axial surface 143, a first lower radial surface 151, and a first lower axial surface 152 are located inside the outer shell 17. A second upper radial surface 142, a second lower radial surface 153, and a second lower axial surface 154 are located inside the inner shell 16. A first air inlet pipe 171 and a first air outlet pipe 172 are formed on the outer shell 17. The first air inlet pipe 171 and the vortex cavity 11 are connected through a first air inlet 173. The first air outlet pipe 172 and the vortex cavity 11 are connected through a first air outlet 174. A first partition 175 is provided between the first air inlet 173 and the first air outlet 174. A first partition surface 176 is provided on the first partition 175, which is flush with and connected to the first upper radial surface 141 and the first lower radial surface 151. The first partition surface 176 is coated with a flocked layer. The first baffle surface 176 effectively blocks the airflow between the inlet and outlet. A flocked layer is provided on this surface, which effectively reduces the flow loss and leakage between the high-speed airflow and the cavity wall, enhances the gas sealing and guiding properties, and allows the gas energy to be more concentrated for pressure boosting. Thus, higher output pressure and working efficiency can be achieved with a single-stage impeller 3 structure. The inner shell 16 is formed with a second air inlet pipe 161 and a second air outlet pipe 162. The second air inlet pipe 161 and the vortex cavity 11 are connected through a second air inlet 163, and the second air outlet pipe 162 and the vortex cavity 11 are connected through a second air outlet 164. A second baffle part 165 is provided between the second air inlet 163 and the second air outlet 164. The second baffle part 165 is provided with a second baffle surface 166 that is flush with and connected to the second upper radial surface 142 and the second lower radial surface 153. The second baffle surface 166 is coated with a flocked layer. The second baffle surface 166 effectively blocks the airflow between the inlet and outlet. A flocked layer is set on this surface, which effectively reduces the flow loss and leakage between the high-speed airflow and the cavity wall, enhances the gas sealing and guiding, and makes the gas energy more concentrated for pressure boosting. Thus, higher output pressure and working efficiency can be achieved with a single-stage impeller 3 structure.

[0025] This high-pressure vortex blower has two modes, one of which is a high-flow mode. This is achieved by aligning the first inlet pipe 171 and the second inlet pipe 161, and aligning the first outlet pipe 172 and the second outlet pipe 162. After the first inlet pipe 171 and the second inlet pipe 161 are aligned, the first inlet port 173 and the second inlet port 163 simultaneously connect to the vortex cavity 11 to form a high-flow inlet. After the outlets of the first outlet pipe 172 and the second outlet pipe 162 are aligned, the first outlet port 174 and the second outlet port 164 simultaneously connect to the vortex cavity 11 to form a high-flow outlet. In this mode, the air volume is high.

[0026] Another high-pressure mode is achieved by connecting the first air inlet pipe 171 to the external air inlet pipe 4, which then connects the first air inlet pipe 171 to the vortex cavity 11. The first air outlet pipe 172 is aligned with the second air inlet pipe 161, and the second air inlet pipe 161 is connected to the sealing cover 6, forming a non-in-exit space that circulates within the vortex cavity 11. The second air outlet pipe 162 is externally connected to the external air outlet pipe 5, and the second air outlet 164 connects to the vortex cavity 11, thus creating a high-pressure mode.

[0027] Both of the above modes incorporate a flocked layer on the key airflow contact surface of the vortex cavity 11, effectively reducing flow loss and leakage between the high-speed airflow and the cavity wall, enhancing gas sealing and guidance, and allowing gas energy to be more concentrated for pressure boosting. This enables higher output pressure and operating efficiency even with a single-stage impeller 3 structure. The flocked layer possesses excellent sound absorption and damping characteristics, effectively attenuating noise generated by airflow turbulence and vortex shedding, while also absorbing some high-frequency mechanical vibrations. This significantly reduces the overall operating noise and vibration level of the fan, improving user experience and environmental friendliness. The surface treatment process of forming the flocked layer through electrostatic spraying optimizes the flow channel performance of the single-stage fan. With relatively simple structural improvements and lower manufacturing costs, it achieves high-pressure output performance close to or superior to some complex two-stage fan structures, overcoming the cost surge problem caused by pursuing high performance in existing technologies, and providing better cost-effectiveness and market competitiveness.

[0028] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection defined by the claims of the present utility model.

Claims

1. A high-pressure vortex blower, comprising a pump casing (1), a motor (2) connected to the pump casing (1), and an impeller (3) disposed inside the pump casing (1), the impeller (3) comprising a fixed part (31) and a blade part (32), characterized in that: The pump casing (1) has a vortex cavity (11) formed inside, and the blade portion (32) is housed in the vortex cavity (11). The upper and lower sides of the vortex cavity (11) are recessed in the direction away from the vortex cavity (11) with an upper groove (14) and a lower groove (15). The outer peripheral gap of the blade portion (32) is embedded in the upper groove (14), and the inner peripheral gap of the blade portion (32) is embedded in the lower groove. The upper groove (14) includes a first upper radial surface (141) and a second upper radial surface (142), and is perpendicularly connected to the first upper radial surface. (141) and the upper axial surface (143) of the second upper radial surface (142), the lower groove (15) includes a first lower radial surface (151) and a first lower axial surface (152) that are perpendicular to each other, a second lower radial surface (153) and a second lower axial surface (154) that are perpendicular to each other, the first upper radial surface (141), the second upper radial surface (142), the first lower radial surface (151), the first lower axial surface (152), the second lower radial surface (153) and the second lower axial surface (154) are all coated with a flocking layer.

2. The high-pressure vortex blower according to claim 1, characterized in that: The pump housing (1) includes an inner shell (16) and an outer shell (17). The first upper radial surface (141), upper axial surface (143), first lower radial surface (151) and first lower axial surface (152) are located inside the outer shell (17), and the second upper radial surface (142), second lower radial surface (153) and second lower axial surface (154) are located inside the inner shell (16).

3. A high-pressure vortex blower according to claim 2, characterized in that: The outer shell (17) is formed with a first air inlet pipe (171) and a first air outlet pipe (172). The first air inlet pipe (171) and the vortex cavity (11) are connected through a first air inlet (173). The first air outlet pipe (172) and the vortex cavity (11) are connected through a first air outlet (174). A first partition (175) is provided between the first air inlet (173) and the first air outlet (174). The first partition (175) is provided with a first partition surface (176) that is flush with and connected to the first upper radial surface (141) and the first lower radial surface (151). The first partition surface (176) is coated with a flocked layer.

4. A high-pressure vortex blower according to claim 3, characterized in that: The inner shell (16) is formed with a second air inlet pipe (161) and a second air outlet pipe (162). The second air inlet pipe (161) and the vortex cavity (11) are connected through a second air inlet (163). The second air outlet pipe (162) and the vortex cavity (11) are connected through a second air outlet (164). A second partition (165) is provided between the second air inlet (163) and the second air outlet (164). The second partition (165) is provided with a second partition surface (166) that is flush with and connected to the second upper radial surface (142) and the second lower radial surface (153). The second partition surface (166) is coated with a flocked layer.

5. A high-pressure vortex blower according to claim 4, characterized in that: The first air inlet pipe (171) and the second air inlet pipe (161) are aligned, and the first air outlet pipe (172) and the second air outlet pipe (162) are aligned.

6. A high-pressure vortex blower according to claim 4, characterized in that: The first air inlet pipe (171) is connected to an external air inlet pipe (4), the first air outlet pipe (172) is aligned with the second air inlet pipe (161), the second air inlet pipe (161) is connected to a sealing cap (6), and the second air outlet pipe (162) is externally connected to an external air outlet pipe (5).

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