Cabinet air inlet device convenient for replacing filter without shutdown
By designing a cabinet air intake device that allows for easy replacement without shutting down the machine, and employing a two-stage filtration system and guide channel structure, the problem of filter clogging in suspended centrifugal blowers has been solved, enabling rapid replacement and improving equipment operating efficiency and reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG ZHANGQIU HUADONG BLOWER
- Filing Date
- 2025-05-16
- Publication Date
- 2026-04-24
AI Technical Summary
The filters of suspended centrifugal blowers are prone to clogging after long-term operation, resulting in a decrease in air intake. Current technology requires shutdown for replacement, which affects the production process and increases energy consumption and maintenance costs.
Design a rack air intake device that can be easily replaced without shutting down the system. It adopts a two-stage filtration system, including an inlet filter and an intake filter. The L-shaped guide groove and filter door design enable quick filter replacement.
Quickly replace filters without shutting down the system, improving equipment operating efficiency and reliability, reducing downtime for maintenance, and lowering energy consumption and maintenance costs.
Smart Images

Figure CN224156575U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a cabinet air intake device that facilitates filter replacement without shutting down the machine, and belongs to the technical field of air intake devices. Background Technology
[0002] Suspension centrifugal blowers include magnetic levitation centrifugal blowers and air-suspended centrifugal blowers. To prevent airborne dust particles from entering the cabinet during operation, a filter is typically installed at the air inlet. However, because the blower needs to run continuously for extended periods, the filter gradually accumulates particulate matter, leading to decreased filtration efficiency or even blockage, which in turn affects the air intake and equipment performance. To ensure unobstructed airflow, the filter needs to be replaced regularly.
[0003] In existing technologies, filter replacement for suspended centrifugal blowers typically requires the equipment to be shut down. This shutdown maintenance not only disrupts the production process but may also adversely affect the normal operation of subsequent workstations. Furthermore, frequent start-up and shutdown operations increase energy consumption and shorten equipment lifespan, resulting in additional maintenance costs and energy consumption issues for users.
[0004] Therefore, there is an urgent need for a cabinet air intake device that allows for easy filter replacement without interrupting equipment operation. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a cabinet air intake device that facilitates filter replacement without shutting down the system. During operation, opening the first filter door of the air intake filter structure allows for quick replacement of the first filter without shutting down the system, thereby improving the operating efficiency and reliability of the equipment.
[0006] The technical solution of this utility model is as follows:
[0007] A cabinet air intake device that facilitates filter replacement without shutting down the machine includes an air intake filter mechanism, which is installed on the air intake door of the cabinet. The air intake filter mechanism includes an air intake cavity, inside which a first support window and several first filters are provided. The first filters are installed inside the first support window, and a first filter door is provided on the side wall of the air intake cavity.
[0008] According to a preferred embodiment of the present invention, the first supporting window includes a first fixed surface, a baffle is provided on one side of the first fixed surface, and a guide groove is also provided on the first fixed surface, the first fixed surface, the baffle and the guide groove forming a guide channel.
[0009] According to a preferred embodiment of the present invention, the guide groove includes a first guide groove and a second guide groove. The upper and lower ends of the first fixed surface are respectively provided with the first guide groove, and a plurality of second guide grooves are provided between the two first guide grooves. The second guide grooves are respectively provided in the same horizontal direction and facing the upper and lower directions.
[0010] According to a preferred embodiment of the present invention, both the first guide groove and the second guide groove are L-shaped.
[0011] According to a preferred embodiment of the present invention, a second reinforcing rib is further provided between the first supporting window and the air intake cavity.
[0012] According to a preferred embodiment of the present invention, the first filter door is located on the opposite side of the baffle.
[0013] According to a preferred embodiment of the present invention, a first reinforcing rib is provided on the inner side of the first filter door for fixing the first filter on the side.
[0014] According to a preferred embodiment of the present invention, the cabinet air intake device further includes a primary inlet filter mechanism, and an air intake pipe is provided between the primary inlet filter mechanism and the air intake filter mechanism. The primary inlet filter mechanism is installed on the wall of the air intake chamber.
[0015] According to a preferred embodiment of the present invention, the primary inlet filtration mechanism includes a second support window, a second filter door, and a second filter. The second filter door is installed on the second support window, and several fixing parts are provided around the second support window. The second filter is fixed on the second filter door.
[0016] According to a preferred embodiment of the present invention, the second filter door includes a second fixed surface, and an L-shaped baffle is provided along the four sides of the inner side of the second fixed surface. The second filter is installed between the L-shaped baffle and the second fixed surface.
[0017] The beneficial effects of this utility model are as follows:
[0018] This utility model provides a cabinet air intake device that facilitates filter replacement without shutting down the machine. It adopts a two-stage filtration system: a first-stage inlet filter intercepts large particulate pollutants, and an intake filter performs fine filtration. The first-stage filter is independently installed on the wall of the air intake chamber, and the second-stage filter is integrated into the air intake door of the cabinet, intercepting pollutants in stages and improving filtration efficiency.
[0019] A first filter door is provided in the air intake filtration mechanism, allowing for easy replacement of the first filter by opening the door. Combined with the L-shaped first and second guide groove sliding channels, the first filter can be quickly installed and removed without disassembling the entire device, significantly reducing maintenance downtime. Furthermore, a second filter door is also provided in the primary inlet filtration mechanism, allowing for easy replacement of the second filter by opening the door, further simplifying operation. The design provided in this application enables rapid replacement of either the first or second filter without shutting down the system, thereby improving the equipment's operating efficiency and reliability. Attached Figure Description
[0020] Figure 1 This utility model provides a structural schematic diagram of a cabinet air intake device that facilitates filter replacement without shutting down the machine.
[0021] Figure 2 A schematic diagram of another form of cabinet air intake device for easy filter replacement provided by this utility model.
[0022] Figure 3 A partial cross-sectional view of the air intake filter mechanism provided by this utility model.
[0023] Figure 4 Another partial cross-sectional view of the air intake filter mechanism provided by this utility model.
[0024] Figure 5 for Figure 2 Cross-sectional view along the BB direction.
[0025] Figure 6 for Figure 2 Cross-sectional view along the AA direction.
[0026] Figure 7 A schematic diagram of the structure of the primary inlet filtration mechanism provided by this utility model.
[0027] Figure 8 A cross-sectional structural diagram of the second filter door provided by this utility model.
[0028] 1. Air intake filter mechanism; 2. Air intake pipe; 3. Primary inlet filter mechanism; 4. Air intake chamber; 5. First filter door; 6. First reinforcing rib; 7. First fixed surface; 8. First filter; 9. Wall; 10. Second filter door; 11. Air intake door; 12. First guide groove; 13. Second guide groove; 14. Baffle; 15. Second reinforcing rib; 16. Second support window; 17. Air intake cavity; 18. Fixed part; 19. L-shaped baffle; 20. Second fixed surface; 21. First support window. Detailed Implementation
[0029] The following illustrations will disclose several embodiments of this application, providing a clear and complete description of the technical solution of this utility model. The accompanying drawings, which constitute a part of this application, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an improper limitation of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.
[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "connection" can refer to a fixed connection, a detachable connection, or an integral part, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0031] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0032] Example 1
[0033] A rack-mounted air intake device that allows for easy filter replacement without shutting down the system, such as Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the system includes an air intake filter mechanism 1, which is mounted on the air intake door 11 of the cabinet. Apart from the air intake filter mechanism 1, no other air intake channels are provided on the air intake door 11. The air intake filter mechanism 1 includes an air intake chamber 17, inside which a first support window 21 and several first filters 8 are provided. The first filters 8 are installed inside the first support window 21. The number of first filters 8 can be arranged in the first support window 21 depending on the size of the air intake filter mechanism 1. First filter doors 5 are provided on the side wall of the air intake chamber 17.
[0034] The working process of the above-mentioned cabinet air intake device is as follows: when the air intake filter mechanism 1 needs to replace the first filter 8, open the first filter door 5, use the clamps to take the first filter 8 out of the first support window 21 in sequence, then reinstall the new first filter 8 into the inside of the first support window 21, close the first filter door 5, and thus complete the replacement of the first filter 8 without stopping the machine.
[0035] Example 2
[0036] A cabinet air intake device that allows for filter replacement without shutting down the system differs from Embodiment 1 in that:
[0037] like Figure 5 As shown, the first support window 21 includes a first fixed surface 7, a baffle 14 is provided on one side of the first fixed surface 7, and a guide groove is also provided on the first fixed surface 7. The first fixed surface 7, the baffle 14 and the guide groove form a sliding guide channel to facilitate the movement of the first filter 8 in the guide channel.
[0038] Example 3
[0039] A cabinet air intake device that allows for easy filter replacement without shutting down the system differs from Embodiment 2 in that:
[0040] like Figure 5 and Figure 6 As shown, the guide groove includes a first guide groove 12 and a second guide groove 13. The first guide groove 12 is respectively provided at the upper and lower ends of the first fixed surface 7, and a plurality of second guide grooves 13 are provided between the two first guide grooves 12. The second guide grooves 13 are provided in the same horizontal direction, facing the upper and lower directions respectively. Two second guide grooves 13 facing opposite directions in the same horizontal direction can be obtained by bending the plate. The processing and manufacturing are relatively convenient, and the replacement of the first filter can be completed without stopping the machine.
[0041] Example 4
[0042] A cabinet air intake device that allows for easy filter replacement without shutting down the system differs from Embodiment 3 in that:
[0043] like Figure 5 As shown, both the first guide groove 12 and the second guide groove 13 are L-shaped.
[0044] Example 5
[0045] A cabinet air intake device that allows for filter replacement without shutting down the system differs from Embodiment 1 in that:
[0046] like Figure 5 As shown, a second reinforcing rib 15 is also provided between the first support window 21 and the air intake cavity 17. The connection between the first support window 21 and the air intake cavity 17 is achieved through the second reinforcing rib 15.
[0047] Example 6
[0048] A cabinet air intake device that allows for easy filter replacement without shutting down the system differs from Embodiment 2 in that:
[0049] The first filter door 5 is located on the opposite side of the baffle 14. By opening the first filter door 5, the first filter 8 can be replaced without disassembling the entire device or stopping the machine.
[0050] Example 7
[0051] A cabinet air intake device that allows for easy filter replacement without shutting down the system differs from Embodiment 6 in that:
[0052] like Figure 3 As shown, a first reinforcing rib 6 is provided on the inner side of the first filter door 5 to fix the first filter 8 on the side. This design not only fixes the first filter 8 but also makes reasonable use of space. When the first filter door 5 is closed, the first reinforcing rib 6 can fix the first filter 8 and play a limiting role.
[0053] Example 8
[0054] A cabinet air intake device that allows for filter replacement without shutting down the system differs from Embodiment 1 in that:
[0055] like Figure 2 As shown, the cabinet air intake device also includes a primary inlet filter 3, and an air intake pipe 2 is provided between the primary inlet filter 3 and the air intake filter 1. The primary inlet filter 3 is installed on the wall 9 of the air intake chamber 4. The air intake filter 1 and the air intake pipe 2 can be installed in the fan room. The air intake pipe 2 is connected to the air intake filter 1 via a flange. The primary inlet filter 3 can effectively block large particulate pollutants, improve the filtration effect, and extend the service life of the air intake filter 1.
[0056] Example 9
[0057] A cabinet air intake device that allows for filter replacement without shutting down the system differs from Embodiment 8 in that:
[0058] like Figure 7 As shown, the primary inlet filter mechanism 3 includes a second support window 16, a second filter door 10, and a second filter. The second filter door 10 is installed on the second support window 16. Specifically, the bottom of the second filter door 10 and the second support window 16 has a mesh structure to facilitate air intake. A fixing frame is provided around the second support window 16, and the second filter door 10 is fixed to the fixing frame. Several fixing parts 18 are provided around the second support window 16, and the fixing parts 18 are fixed to the wall 9 of the air intake chamber 4 by bolts. The second filter is fixed to the second filter door 10. The second filter can be easily replaced by opening the filter door after installing the second filter on the second filter door 10.
[0059] Example 10
[0060] A cabinet air intake device that allows for easy filter replacement without shutting down the system differs from Embodiment 9 in that:
[0061] like Figure 8 As shown, the second filter door 10 includes a second fixing surface 20. L-shaped baffles 19 are provided along the four sides of the inner side 20 of the second fixing surface. The second filter is installed between the L-shaped baffles 19 and the second fixing surface 20. The L-shaped baffles 19 and the second fixing surface 20 are integrally formed. The design is simple and facilitates the disassembly and replacement of the second filter.
[0062] The difference between the working process of the cabinet air intake device provided in Embodiment 1 is that the primary inlet filter mechanism 3 is fixed on the wall 9 of the air intake chamber 4. When the primary inlet filter mechanism 3 needs to be replaced, the second filter door 10 is opened, and the second filter is removed from the inner L-shaped baffle 19 of the second filter door 10. After replacement, the second filter door 10 is closed to complete the replacement of the second filter.
[0063] The foregoing description illustrates and describes preferred embodiments of this application. However, as previously understood, this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the conception herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.
Claims
1. A cabinet air intake device that facilitates filter changeout without shutdown, characterized by, It includes an air intake filter mechanism, which is installed on the air intake door of the cabinet. The air intake filter mechanism includes an air intake cavity, and the air intake cavity is provided with a first support window and several first filters. The first filters are installed inside the first support window, and the side wall of the air intake cavity is provided with a first filter door.
2. A cabinet air intake device that facilitates filter change without shutdown according to claim 1, wherein, The first supporting window includes a first fixed surface, a baffle is provided on one side of the first fixed surface, and a guide groove is also provided on the first fixed surface. The first fixed surface, the baffle and the guide groove form a guide channel.
3. A cabinet air intake device that facilitates filter change without shutdown according to claim 2, wherein, The guide groove includes a first guide groove and a second guide groove. The first guide groove is provided at the upper and lower ends of the first fixed surface, and a plurality of second guide grooves are provided between the two first guide grooves. The second guide grooves are provided in the same horizontal direction, respectively facing the upper and lower directions.
4. A cabinet air intake device that facilitates filter change without shutdown according to claim 3, wherein, Both the first guide groove and the second guide groove are L-shaped.
5. A cabinet air intake device that facilitates filter change without shutdown according to claim 1, wherein, A second reinforcing rib is also provided between the first support window and the air intake cavity.
6. A cabinet air intake device that facilitates filter change without shutdown according to claim 2, wherein, The first filter door is located on the opposite side of the baffle.
7. A cabinet air intake device facilitating filter change without shutdown according to claim 6, characterized in that, The inner side of the first filter door is provided with a first reinforcing rib for fixing the first filter to the side.
8. A cabinet air intake device that facilitates filter change without shutdown according to claim 1, wherein, The cabinet air intake device also includes a primary inlet filter mechanism, and an air intake pipe is installed between the primary inlet filter mechanism and the air intake filter mechanism. The primary inlet filter mechanism is installed on the wall of the air intake chamber.
9. A cabinet air intake device that facilitates filter change without shutdown according to claim 8, wherein, The primary inlet filtration mechanism includes a second support window, a second filter door, and a second filter. The second filter door is installed on the second support window, and several fixing parts are provided around the second support window. The second filter is fixed on the second filter door.
10. A cabinet air intake device facilitating filter change without shutdown according to claim 9, wherein, The second filter door includes a second fixed surface, and an L-shaped baffle is provided on the inner side of the second fixed surface along its four sides. The second filter is installed between the L-shaped baffle and the second fixed surface.