An external quick-mount high-efficiency filter air supply outlet structure

Abstract

The present application relates to air conditioning air supply technical field, specifically to a kind of external quick-mount high-efficiency filter air supply outlet structure, including first mounting frame and second mounting frame connected by elastic hinged connecting assembly hinged connection, fast-release locking assembly is equipped away from hinged side, filter core is sealed and clamped between two mounting frames, air valve assembly is installed in first mounting frame, is connected with air supply pipe by air pipe connecting assembly, second mounting frame end installs diffusion plate.Release fast-release locking assembly and overturn second mounting frame when replacing filter core, tool-free can be directly taken out and loaded from outside Filter core.The overall integration high-efficiency filtration, uniform air supply, air volume regulation, quick-release replacement and reliable sealing function, applicable to clean room height is high, there is high-risk behavior of climbing operation when replacing filter, and clean room equipment is placed densely, it is inconvenient to replace high-efficiency filter in workshop operation.

Description

Technical Field

[0001] This invention relates to the field of air conditioning air supply technology, specifically to an external quick-installation high-efficiency filter air outlet structure. Background Technology

[0002] High-efficiency particulate air (HEPA) air outlets are key terminal devices in cleanrooms, hospital operating rooms, biological laboratories, and other places with strict requirements for air cleanliness. Their main function is to deliver clean air filtered by HEPA filters evenly and stably into the room, maintain positive pressure, and prevent the intrusion of polluted air from the outside.

[0003] Currently, most commercially available air outlets adopt a one-piece design, with flanged edges at the bottom to securely fasten to the cleanroom ceiling. The top of the outlet has mounting lugs or rings for connection. In this one-piece design, the filter element is typically fixed inside the outlet housing using pressure strips or sealant. When filter replacement is needed, operators must remove the entire air outlet from the ceiling or ductwork to perform the replacement and maintenance. This process is cumbersome, time-consuming, labor-intensive, and requires specialized tools, increasing maintenance costs and potentially causing prolonged cleanroom downtime during maintenance, impacting production or experimental activities.

[0004] In addition, many existing air outlet products do not integrate air volume adjustment functions. If air volume adjustment is required, manual or electric air valves must be installed in the upstream duct. This not only increases the complexity and cost of system design, but also makes the overall structure less compact.

[0005] Therefore, how to achieve quick tool-free replacement of filter elements and integrated airflow regulation function while ensuring high-efficiency filtration is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In order to achieve quick tool-free replacement of filter elements and integrated air volume adjustment function while ensuring high-efficiency filtration, this application provides an external quick-installation high-efficiency filter air outlet structure.

[0007] The external quick-installation high-efficiency filter air outlet structure provided in this application adopts the following technical solution: An external quick-installation high-efficiency filter air outlet structure includes a first mounting frame and a second mounting frame. The first mounting frame and the second mounting frame are hinged together by an elastic hinge connection assembly. A quick-release locking assembly is provided on the side of the first mounting frame and the second mounting frame away from the elastic hinge connection assembly. A filter element is sealed and clamped between the first mounting frame and the second mounting frame. An air valve assembly is installed inside the first mounting frame. An air duct connection assembly is installed at the end of the first mounting frame away from the second mounting frame. The air duct connection assembly is connected to an air supply duct. A diffuser is installed at the end of the second mounting frame away from the first mounting frame.

[0008] By adopting the above technical solution, the first and second mounting frames are connected by a flexible hinge assembly to achieve flip-opening and closing, and a quick-release locking assembly to achieve rapid locking and releasing. When replacing the filter element, simply release the quick-release locking assembly and flip open the second mounting frame to directly remove and install the filter element from the outside, without disassembling the entire air outlet structure or using professional tools, making the operation simple and quick. The air valve assembly is integrated inside the first mounting frame, which can close the air valve when replacing the filter element to reduce airflow interference. The duct connection assembly facilitates quick docking with the air supply duct, and the diffuser evenly delivers filtered clean air into the room. The overall structure integrates filtration, sealing, airflow regulation, and quick replacement, improving operation and maintenance efficiency and reliability.

[0009] Furthermore, the inner surfaces of the first and second mounting frames facing each other are provided with mounting steps corresponding to the frame of the filter element, and the outer ends of the mounting steps are provided with smoothly transitioned inclined guide surfaces, the inclination angle of which is 30° to 45°.

[0010] By adopting the above technical solution, the installation step plays a role in accurately positioning the filter element frame, preventing the filter element from radially shifting after closing, and ensuring reliable mating of the sealing surface; the inclined guide surface allows the filter element frame to slide smoothly into the installation step along the inclined surface during installation, avoiding jamming between the filter element frame and the right-angle edge of the installation step, while protecting the sealing ring from scratch damage and extending the service life of the sealing ring.

[0011] Furthermore, sealing rings are fixedly installed on the step surfaces of the mounting steps on both the first and second mounting frames.

[0012] By adopting the above technical solution, after the sealing ring is closed and locked between the first mounting frame and the second mounting frame, a reliable elastic compression seal is formed between the mounting step and the filter element frame, which effectively prevents unfiltered airflow from bypassing and leaking through the gap between the filter element frame and the mounting step, ensuring that the overall filtration efficiency of the air outlet meets the requirements of the high-efficiency filter level.

[0013] Furthermore, decorative covers are fitted on the outer sides of the first mounting frame and the second mounting frame, and ventilation openings are provided on the decorative covers corresponding to the diffuser plate. A clearance opening is provided on the side of the decorative covers corresponding to the quick-release locking assembly.

[0014] By adopting the above technical solution, the decorative cover is fitted on the outside of the first and second mounting frames, concealing the internal frame structure, flexible hinge connection components, quick-release locking components and other parts, making the exposed surface of the air outlet neat and beautiful; the ventilation opening ensures that clean air enters the room smoothly after being diffused by the diffuser plate.

[0015] Furthermore, the elastic hinge connection assembly includes several movable hinge seats and several fixed hinge seats. The movable hinge seats and the fixed hinge seats are hinged together by a hinge shaft. The first mounting frame has a stepped hole. A slide rod is fixedly connected to the movable hinge seat. A limit screw is fixedly installed at one end of the slide rod that passes through the stepped hole. A spring fitted on the outside of the slide rod is abutted between the inner end face of the limit screw and the stepped hole. The fixed hinge seat is fixedly installed on the second mounting frame.

[0016] By adopting the above technical solution, the movable hinge seat and the fixed hinge seat are hinged together by the hinge shaft, realizing the flipping and opening function of the second mounting frame relative to the first mounting frame; the slide rod is inserted into the stepped hole of the first mounting frame and is axially limited by the limiting screw; the spring is sleeved on the outside of the slide rod and is in a pre-compressed state. When the elastic potential energy is released, it pushes the slide rod to slide towards the first mounting frame, assisting the second mounting frame to reset in the closing direction, so as to adapt to the sealing requirements of filter elements of different thicknesses. At the same time, in the closed state, the spring maintains a certain pre-tight force, so that the first mounting frame and the second mounting frame form a continuous clamping tendency on the filter element, and the sealing ring maintains a good compression sealing state.

[0017] Furthermore, the quick-release locking assembly includes a locking plate fixedly installed on the second mounting frame. The locking plate extends toward the first mounting frame, and a slot is provided at one end of the locking plate away from the second mounting frame. A screw is fixedly installed on the first mounting frame corresponding to the slot, and a knob is threadedly connected to the screw. The inner end face of the knob is set as a pressure surface that mates with the outer surface of the locking plate.

[0018] By adopting the above technical solution, the locking plate is fixed on the second mounting frame and extends toward the first mounting frame. The slot at its cantilever end facilitates the screw to be fitted from the side or below for coarse positioning. The screw is fixed on the first mounting frame. When the knob is turned along the screw, its pressure surface presses against the outer surface of the locking plate, and the two mounting frames are firmly locked by friction and clamping force. After turning the knob in the opposite direction to release, the screw can be taken out of the slot for quick release. The entire locking and releasing process does not require any tools, making the operation convenient and efficient, and greatly shortening the replacement and maintenance time of the filter element.

[0019] Furthermore, the air valve assembly includes a fixed valve plate fixedly installed on the inner side of the first mounting frame, a first sliding valve plate slidably connected to the inner side of the first mounting frame and in contact with the surface of the fixed valve plate, and a second sliding valve plate slidably connected to the inner side of the first mounting frame and in contact with the surface of the first sliding valve plate. The fixed valve plate, the first sliding valve plate, and the second sliding valve plate are all provided with evenly distributed valve holes, and the distance between adjacent valve holes is greater than the size of the valve hole.

[0020] By adopting the above technical solution, valve holes are evenly distributed on the three layers of plates: the fixed valve plate, the first sliding valve plate, and the second sliding valve plate. By sliding the first sliding valve plate and / or the second sliding valve plate to align or misalign the valve holes, stepless adjustment of the air supply volume from fully open to fully closed can be achieved. The distance between adjacent valve holes is greater than the valve hole size, ensuring that the valve holes of each layer can be completely misaligned without leaving a through channel in the fully closed state, thus ensuring the shut-off sealing of the air valve.

[0021] Furthermore, a push block is fixedly installed on the side of the first sliding valve plate near the quick-release locking assembly. The outer end of the push block is configured as a guide surface that mates with the inner surface of the locking plate. A first pull rod is fixedly installed on the side of the first sliding valve plate away from the quick-release locking assembly. The first mounting frame has a first groove and a first mounting cavity communicating with the first groove corresponding to the first pull rod. A first tension spring is fixedly installed inside the first mounting cavity near the quick-release locking assembly. The other end of the first tension spring is fixedly connected to the first pull rod.

[0022] By adopting the above technical solution, the guide surface of the push block cooperates with the inner surface of the locking plate. When the first mounting frame and the second mounting frame are closed, the locking plate pushes the push block along the guide surface to drive the first sliding valve plate to slide, so that the valve hole automatically tends to align and the air valve is opened. When the quick-release locking assembly is released and the second mounting frame is flipped open, the locking plate disengages from the push block, and the first tension spring provides a reset elastic force to pull the first sliding valve plate back so that the valve hole is misaligned, and the air valve automatically tends to close. Thus, when the filter element is replaced, the air passage from the air duct side is automatically cut off, preventing a large amount of air from rushing in from the air duct side when the filter element is replaced, and ensuring the cleanliness and safety of the maintenance process.

[0023] Furthermore, a second pull rod is fixedly installed on the side of the second sliding valve plate near the quick-release locking assembly. The first mounting frame has a second sliding groove and a second mounting cavity communicating with the second sliding groove corresponding to the second pull rod. A telescopic component is fixedly installed at the end of the second mounting cavity away from the quick-release locking assembly. The telescopic end of the telescopic component is fixedly connected to the second pull rod.

[0024] By adopting the above technical solution, the telescopic component provides an independent driving force or holding force for the second sliding valve plate, enabling the second sliding valve plate to stay in a preset position as needed; when the telescopic component is a gas spring, it can provide a constant pushing or pulling force in the absence of power or unattended operation, realizing manual stepless adjustment of the position of the second sliding valve plate; when the telescopic component is an electric push rod, the displacement of the second sliding valve plate can be remotely controlled by an external controller, realizing electric remote adjustment of the air volume, improving the intelligence level and control flexibility of the air supply system.

[0025] Furthermore, the duct connection assembly includes a first connecting frame fixedly installed on the first mounting frame at one end away from the second mounting frame, a second connecting frame slidably connected to the end of the first connecting frame away from the first mounting frame, the second connecting frame being fixedly installed at the end of the duct via a flange, a sealing gasket being installed between the end face of the duct and the second connecting frame, and a limiting plate corresponding to the second connecting frame being fixedly installed on the first connecting frame.

[0026] By adopting the above technical solution, the sliding telescopic connection between the first connecting frame and the second connecting frame allows for adjustment margins in the front and rear directions between the air outlet and the air supply pipe, which facilitates adaptation to on-site installation errors and reduces the difficulty and precision requirements of docking installation; the sealing gasket forms a reliable airtight seal between the flange connection surfaces to prevent air leakage at the connection; the limiting plate restricts the sliding position of the second connecting frame to prevent it from coming off the first connecting frame during operation, thus ensuring the reliability and safety of the connection.

[0027] Beneficial effects achieved: This application integrates multiple functions such as high-efficiency filtration, uniform air supply, stepless air volume adjustment, quick replacement, and reliable sealing into one unit. With its ingenious structural design and the coordinated operation of all components, it provides an integrated, high-performance terminal air supply solution. While ensuring high-efficiency filtration, it achieves quick tool-free replacement of the filter element and integrated air volume adjustment function, meeting the comprehensive requirements of modern clean environments for air supply equipment that is efficient, reliable, convenient, and aesthetically pleasing.

[0028] This application achieves the flip-opening and quick-locking of the first and second mounting frames by setting up a flexible hinge connection component and a quick-release locking component. When replacing the filter element, simply loosen the knob and flip open the second mounting frame to directly remove and install the filter element from the outside. The entire process does not require disassembling the air outlet body or using any professional tools, and can be completed by a single person in a short time, greatly reducing maintenance difficulty and downtime, and improving operation and maintenance efficiency.

[0029] The damper assembly of this application adopts a structure of fixed valve plate and multi-layer sliding valve plate stacked together. Stepless adjustment from fully open to fully closed is achieved through valve hole alignment and misalignment. Furthermore, the spacing between adjacent valve holes is greater than the valve hole size, ensuring that all valve holes are completely misaligned in the fully closed state, guaranteeing reliable shut-off. The mechanical linkage design between the damper assembly and the quick-release locking assembly automatically cuts off the airflow on the duct side during filter replacement, eliminating the need for manual operation of the damper, reducing reliance on operator skill levels, and shortening maintenance downtime. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the open state structure according to an embodiment of this application.

[0031] Figure 2 This is a structural exploded view of one embodiment of this application.

[0032] Figure 3 This is a schematic diagram of the internal structure of one embodiment of this application.

[0033] Figure 4 This is an exploded view of the structure of the elastic hinge connection assembly and the quick-release locking assembly in one embodiment of this application.

[0034] Figure 5 yes Figure 3 Enlarged schematic diagram of Part I of the structure.

[0035] Figure 6 This is an exploded view of the structure of the damper assembly in one embodiment of this application.

[0036] Figure 7 This is a cross-sectional structural diagram of the first sliding valve plate in one embodiment of this application.

[0037] Figure 8 This is a cross-sectional structural diagram of the second sliding valve plate in one embodiment of this application.

[0038] Figure 9 This is an exploded view of the structure of a duct connection assembly in one embodiment of this application.

[0039] Explanation of reference numerals in the attached drawings: 100, air supply duct; 101, first mounting frame; 102, second mounting frame; 103, filter element; 104, diffuser; 105, mounting step; 106, oblique guide surface; 107, sealing ring; 108, decorative cover; 109, vent; 110, clearance opening; 200, flexible hinge connection assembly; 201, movable hinge seat; 202, fixed hinge seat; 203, hinge shaft; 204, stepped hole; 205, slide rod; 206, limit screw; 207, spring; 300, quick-release locking assembly; 301, locking plate; 3 02. Slot; 303. Screw; 304. Knob; 400. Air valve assembly; 401. Fixed valve plate; 402. First sliding valve plate; 403. Second sliding valve plate; 404. Valve hole; 405. Push block; 406. First pull rod; 407. First slide groove; 408. First mounting cavity; 409. First tension spring; 410. Second pull rod; 411. Second slide groove; 412. Second mounting cavity; 413. Telescopic component; 500. Air duct connection assembly; 501. First connecting frame; 502. Second connecting frame; 503. Sealing gasket; 504. Limiting plate. Detailed Implementation

[0040] The following combination Figures 1-9 This application will be described in further detail.

[0041] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and 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 of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] This application discloses an external quick-installation high-efficiency filter air outlet structure.

[0044] Please refer to the above as well. Figures 1 to 9In one embodiment of this application, an external quick-installation high-efficiency filter air outlet structure includes a first mounting frame 101, a second mounting frame 102, a filter element 103, a diffuser 104, a decorative cover 108, an elastic hinge connection assembly 200, a quick-release locking assembly 300, an air valve assembly 400, and an air duct connection assembly 500.

[0045] Please refer to the above as well. Figures 1 to 9 In one specific embodiment of this application, both the first mounting frame 101 and the second mounting frame 102 are rectangular frame structures. The first mounting frame 101 and the second mounting frame 102 can be made of aluminum alloy profiles, such as 6063-T5 aluminum alloy profiles, which have the advantages of being lightweight, high-strength, and corrosion-resistant. The four sides of the first mounting frame 101 and the second mounting frame 102 have the same width. The right sides of the first mounting frame 101 and the second mounting frame 102 are hinged together by an elastic hinge connection component 200, allowing the second mounting frame 102 to be flipped open and closed relative to the first mounting frame 101 with the elastic hinge connection component 200 as the axis. A quick-release locking component 300 is provided on the left side of the first mounting frame 101 and the second mounting frame 102 away from the elastic hinge connection component 200, for locking and fixing the first mounting frame 101 and the second mounting frame 102 in the closed state. A filter element 103 is sealed between the first mounting frame 101 and the second mounting frame 102. The filter element 103 is a high-efficiency particulate air (HEPA) filter with a filtration efficiency of over 99.97%, especially suitable for particles with a diameter of 0.3 μm. The frame size of the filter element 103 is adapted to the inner cavity size of the first mounting frame 101 and the second mounting frame 102. A damper assembly 400 is installed inside the first mounting frame 101 to regulate the air supply volume. A duct connection assembly 500 is installed at the end of the first mounting frame 101 away from the second mounting frame 102. The duct connection assembly 500 is connected to the air supply duct 100 to introduce the treated air into the air outlet. A diffuser 104 is installed at the end of the second mounting frame 102 away from the first mounting frame 101. The diffuser 104 is a porous diffuser made of aluminum alloy with a number of diffuser holes evenly distributed on its surface to evenly deliver the clean air filtered by the filter element 103 into the clean room.

[0046] Please refer to the above as well. Figures 1 to 9In one specific embodiment of this application, the inner surfaces of the first mounting frame 101 and the second mounting frame 102, which are opposite to each other, are provided with mounting steps 105 corresponding to the frame of the filter element 103. The mounting steps 105 are stepped grooves that surround the inner surfaces of the first mounting frame 101 and the second mounting frame 102. The depth of the mounting steps 105 is adapted to the thickness of the frame of the filter element 103, so that the frame of the filter element 103 can be embedded in the mounting steps 105 for precise positioning and to prevent the filter element 103 from radially shifting after being closed. The outer end of the mounting steps 105 facing the open direction of the first mounting frame 101 and the second mounting frame 102 is provided with a smoothly transitioned inclined guide surface 106. The inclined guide surface 106 is an arc surface or inclined surface that extends outward from the stepped surface of the mounting steps 105, and its inclination angle is preferably 30° to 45°. When the first mounting frame 101 closes relative to the second mounting frame 102, the inclined guide surface 106 guides the frame of the filter element 103, allowing the frame of the filter element 103 to slide into the mounting step 105 along the inclined surface of the inclined guide surface 106, thus preventing the frame of the filter element 103 from getting stuck with the right-angle edge of the mounting step 105, and protecting the sealing ring 107 from scratch damage.

[0047] Please refer to the above as well. Figures 1 to 9 In one specific embodiment of this application, sealing rings 107 are fixedly installed on the step surfaces of the mounting steps 105 on both the first mounting frame 101 and the second mounting frame 102. The sealing rings 107 are preferably closed-cell foamed silicone rubber sealing rings or ethylene propylene diene monomer (EPDM) rubber sealing rings, with a semi-circular or lip-shaped cross-section, and are fixed to the step surface of the mounting step 105 by adhesive bonding or embedded slots. When the first mounting frame 101 and the second mounting frame 102 are closed and locked, the sealing rings 107 form a reliable elastic compression seal between the mounting step 105 of the first mounting frame 101 and the filter element 103 frame, and between the mounting step 105 of the second mounting frame 102 and the filter element 103 frame. This effectively prevents unfiltered airflow from bypassing and leaking through the gap between the filter element 103 frame and the mounting step 105, ensuring that the overall filtration efficiency of the air outlet meets the requirements of a high-efficiency filter.

[0048] Please refer to the above as well. Figures 1 to 9In one specific embodiment of this application, a decorative cover 108 is fitted onto the outer side of the first mounting frame 101 and the second mounting frame 102. The decorative cover 108 is a rectangular cover formed by sheet metal stamping or injection molding, and its surface is sprayed or anodized. The color is preferably white or the same as the color of the cleanroom ceiling. The decorative cover 108 covers the outer side of the first mounting frame 101 and the second mounting frame 102, concealing the internal frame structure, the flexible hinge connection assembly 200, the quick-release locking assembly 300, and other parts, making the exposed surface of the air outlet neat and beautiful. A ventilation opening 109 is provided on the decorative cover 108 at the position corresponding to the diffuser plate 104. The size of the ventilation opening 109 is slightly larger than the outer size of the diffuser plate 104, so that clean air can be diffused by the diffuser plate 104 and then smoothly enter the room through the ventilation opening 109. The decorative cover 108 has a clearance opening 110 on its side corresponding to the position of the quick-release locking assembly 300. The clearance opening 110 is a rectangular or circular opening, and its size is sufficient to allow the quick-release locking assembly 300 to be screwed.

[0049] Please refer to the above as well. Figures 1 to 9 In one specific embodiment of this application, the elastic hinge connection assembly 200 includes a plurality of movable hinge seats 201, a plurality of fixed hinge seats 202, a hinge shaft 203, a stepped hole 204, a slide rod 205, a limiting screw 206, and a spring 207. The movable hinge seats 201 and the fixed hinge seats 202 are respectively disposed at both ends of the hinge side of the first mounting frame 101 and the second mounting frame 102. Preferably, there are two movable hinge seats 201 and two fixed hinge seats 202, symmetrically distributed at both ends of the hinge side to ensure balanced force during the opening and closing process. The fixed hinge seats 202 are fixed to the outer surface of the hinge side of the second mounting frame 102 by welding, and hinge holes are provided on the fixed hinge seats 202. The movable hinge seat 201 is also provided with a hinge hole. The movable hinge seat 201 and the fixed hinge seat 202 are hinged together by a hinge shaft 203. The hinge shaft 203 is a stainless steel cylindrical pin. After passing through the hinge holes of the movable hinge seat 201 and the fixed hinge seat 202, it is axially limited by a cotter pin or a retaining ring, so that the movable hinge seat 201 can rotate relative to the fixed hinge seat 202 around the hinge shaft 203, thereby realizing the flipping and opening of the first mounting frame 101 relative to the second mounting frame 102.

[0050] A stepped hole 204 is provided on the outer surface of the hinge side of the first mounting frame 101 corresponding to the position of the movable hinge seat 201. The stepped hole 204 is a stepped through hole extending along the thickness direction of the first mounting frame 101. A slide rod 205 is fixedly connected to the movable hinge seat 201. The slide rod 205 is a stainless steel cylindrical rod, and its diameter is slidably fitted with the small end diameter of the stepped hole 204. A limit screw 206 is fixedly installed at one end of the slide rod 205 that passes inside the stepped hole 204. The limit screw 206 is fixed to the end of the slide rod 205 by a threaded connection. Its head diameter is larger than the small end diameter of the stepped hole 204, thereby preventing the slide rod 205 from coming out of the stepped hole 204. A spring 207 is fitted on the outside of the slide rod 205 and is connected between the inner end face of the limit screw 206 and the large end stepped surface of the stepped hole 204. The spring 207 is a compression spring, and its natural length is greater than the depth of the large end portion of the stepped hole 204. After installation, the spring 207 is in a pre-compressed state. During use, the spring 207 releases elastic potential energy, pushing the slide bar 205 to slide closer to the first mounting frame 101, assisting the second mounting frame 102 to reset in the closing direction, so as to adapt to the sealing requirements of filter elements 103 of different thicknesses. Moreover, in the closed state, the spring 207 maintains a certain preload, so that the first mounting frame 101 and the second mounting frame 102 form a continuous clamping tendency on the filter element 103, and assist the sealing ring 107 to maintain a good compression sealing state.

[0051] Please refer to the above as well. Figures 1 to 9In one specific embodiment of this application, the quick-release locking assembly 300 includes a locking plate 301, a slot 302, a screw 303, and a knob 304 fixedly mounted on the second mounting frame 102. The locking plate 301 is a plate-shaped component made of stainless steel or aluminum alloy, and is fixedly mounted on the outer surface of the second mounting frame 102 away from the elastic hinge connection assembly 200 by welding. The locking plate 301 extends toward the first mounting frame 101, and its cantilever end extends to the vicinity of the outer surface of the corresponding side of the first mounting frame 101. The locking plate 301 has a slot 302 at its cantilever end away from the second mounting frame 102. A screw 303 is fixedly installed on the first mounting frame 101 at the position corresponding to the slot 302. The screw 303 is a stainless steel stud, one end of which is fixed to the outer surface of the first mounting frame 101 by welding or threaded insert. The axis of the screw 303 is perpendicular to the outer surface of the first mounting frame 101 and extends toward the locking plate 301. The slot 302 is a U-shaped or rectangular slot that opens vertically, and its width is adapted to the diameter of the screw 303, so that the locking plate 301 can be fitted onto the outside of the screw 303 from below or the side to achieve coarse positioning. A knob 304 is threaded onto the screw 303. The knob 304 is a plastic or aluminum alloy handle with anti-slip texture. The inner end face of the knob 304 facing the locking plate 301 is set as a pressure surface that mates with the outer surface of the locking plate 301. The pressure surface is either flat or a pressing surface with anti-slip teeth. When the first mounting frame 101 and the second mounting frame 102 are closed, the operator turns the knob 304 to make it rotate inward along the screw 303. The pressure surface of the knob 304 gradually presses against the outer surface of the locking plate 301, and the first mounting frame 101 and the second mounting frame 102 are firmly locked together through friction and pressing force. Conversely, turning the knob 304 in the opposite direction to loosen it allows the screw 303 to be removed from the slot 302, achieving quick release. The entire locking and releasing process does not require any tools, making the operation convenient and efficient, and significantly shortening the replacement and maintenance time of the filter element 103.

[0052] Please refer to the above as well. Figures 1 to 9In one specific embodiment of this application, the damper assembly 400 includes a fixed valve plate 401, a first sliding valve plate 402, and a second sliding valve plate 403. The fixed valve plate 401 is fixedly mounted on the inner side of the first mounting frame 101 facing the filter element 103 by screws. The fixed valve plate 401 is a rectangular thin plate, preferably made of galvanized steel or aluminum alloy, with a thickness of 1.0 mm to 1.5 mm. A plurality of valve holes 404 are evenly distributed on the surface of the fixed valve plate 401. The valve holes 404 are oblong through holes, and the distance between adjacent valve holes 404 is greater than the width of the valve holes 404 to ensure that the valve holes 404 in each layer are completely staggered in the fully closed state, without leaving any through channels. A slide rail is provided on the inner side of the first mounting frame 101. A first sliding valve plate 402 is slidably connected in the slide rail. The first sliding valve plate 402 is a rectangular thin plate with the same shape and size as the fixed valve plate 401. Its surface is also evenly distributed with a number of valve holes 404 of the same size and spacing as those on the fixed valve plate 401. The surface of the first sliding valve plate 402 is in close contact with the surface of the fixed valve plate 401, and it can slide back and forth in the horizontal direction along the slide rail. Similarly, a second sliding valve plate 403 is slidably connected to the inner side of the first mounting frame 101. The surface of the second sliding valve plate 403 is in close contact with the surface of the first sliding valve plate 402. The surface of the second sliding valve plate 403 is also evenly distributed with a number of valve holes 404. The second sliding valve plate 403 can slide back and forth in the horizontal direction independently of the first sliding valve plate 402. When the fixed valve plate 401, the first sliding valve plate 402, and the second sliding valve plate 403 are all in a position that fully aligns the valve holes 404, air can freely pass through the three valve holes 404, and the air valve is in a fully open state. When the first sliding valve plate 402 and / or the second sliding valve plate 403 slides and partially misaligns the valve holes 404, the airflow area decreases, and the air volume decreases accordingly. When the first sliding valve plate 402 and / or the second sliding valve plate 403 slides to a position that is completely misaligned with the valve holes 404 on the fixed valve plate 401, the air passage is completely blocked, and the air valve is in a fully closed state. This achieves stepless adjustment of the air supply volume.

[0053] Please refer to the above as well. Figures 1 to 9In one specific embodiment of this application, a push block 405 is fixedly installed on the side of the first sliding valve plate 402 near the quick-release locking assembly 300. The push block 405 is a block-shaped protrusion made of metal or plastic and is fixed to the side of the first sliding valve plate 402 by welding or screws. The outer end of the push block 405 is set as a guide surface that mates with the inner surface of the locking plate 301. The guide surface is a slope or arc surface, and its inclination direction is such that when the first mounting frame 101 and the second mounting frame 102 are closed, the inner surface of the locking plate 301 slides along the guide surface and pushes the push block 405, thereby causing the first sliding valve plate 402 to slide horizontally along the slide rail, so that the valve hole 404 on the first sliding valve plate 402 tends to align with the valve hole 404 on the fixed valve plate 401. A first pull rod 406 is fixedly installed on the side of the first sliding valve plate 402 away from the quick-release locking assembly 300. The first pull rod 406 is a metal round or flat rod, and one end of it is fixed to the side of the first sliding valve plate 402 by threaded connection or riveting. The first mounting frame 101 has a first sliding groove 407 and a first mounting cavity 408 communicating with the first sliding groove 407 at the position corresponding to the first pull rod 406. The first sliding groove 407 is an elongated through groove extending along the sliding direction of the first sliding valve plate 402. The first pull rod 406 passes through the first sliding groove 407 and extends into the first mounting cavity 408. A first tension spring 409 is fixedly installed inside the first mounting cavity 408 at one end near the quick-release locking assembly 300. The first tension spring 409 is a tension spring, one end of which is fixed to the inner wall of the first mounting cavity 408 by hook or screw, and the other end is fixedly connected to the first pull rod 406. When the quick-release locking assembly 300 is released and the first mounting frame 101 flips open, the locking plate 301 disengages from the push block 405, and the first sliding valve plate 402 loses its external driving force. The first tension spring 409 provides a restoring elastic force, pulling the first sliding valve plate 402 back to its original position, that is, the position where the valve hole 404 on the first sliding valve plate 402 is misaligned with the valve hole 404 on the fixed valve plate 401. Thus, when the second mounting frame 102 is opened, the air valve automatically tends to close, preventing a large amount of air from rushing in from the air duct side when replacing the filter element 103.

[0054] Please refer to the above as well. Figures 1 to 9In one specific embodiment of this application, a second pull rod 410 is fixedly installed on the side of the second sliding valve plate 403 near the quick-release locking assembly 300. The second pull rod 410 is a metal round rod or flat rod, and one end of it is fixed to the side of the second sliding valve plate 403 by threaded connection or riveting. The first mounting frame 101 has a second sliding groove 411 and a second mounting cavity 412 communicating with the second sliding groove 411 at the position corresponding to the second pull rod 410. The second sliding groove 411 is an elongated through groove extending along the sliding direction of the second sliding valve plate 403. The second pull rod 410 passes through the second sliding groove 411 and extends into the second mounting cavity 412. A telescopic member 413 is fixedly installed at the end of the second mounting cavity 412 away from the quick-release locking assembly 300. The telescopic member 413 is preferably one of a gas spring, an electric push rod, or a hydraulic damping cylinder. The housing end of the telescopic member 413 is fixedly installed on the inner wall of the second mounting cavity 412, and the telescopic end of the telescopic member 413 is fixedly connected to the second pull rod 410. When the telescopic component 413 is a gas spring, the gas spring can provide a constant thrust or pull force in the absence of power or unattended operation, so that the second sliding valve plate 403 is kept in a preset position; when the telescopic component 413 is an electric push rod, the displacement of the second sliding valve plate 403 can be remotely controlled by an external electric air valve actuator or other controller to realize electric adjustment of air volume.

[0055] Please refer to the above as well. Figures 1 to 9 In one specific embodiment of this application, the duct connection assembly 500 includes a first connecting frame 501, a second connecting frame 502, a sealing gasket 503, and a limiting plate 504. The first connecting frame 501 is a rectangular frame structure, preferably made of aluminum alloy profile. The first connecting frame 501 is fixedly installed on the first mounting frame 101 at the end away from the second mounting frame 102 by screws or welding. A sealing measure is provided between the first connecting frame 501 and the first mounting frame 101 to ensure the airtightness of the connection. The end of the first connecting frame 501 away from the first mounting frame 101 is slidably connected to the second connecting frame 502. The second connecting frame 502 is a rectangular frame that matches the cross-sectional shape of the first connecting frame 501. The two are laterally slidingly engaged through guide ribs and grooves, allowing the second connecting frame 502 to slide and extend along the front-back direction of the first connecting frame 501, thereby achieving quick assembly and disassembly and reducing the difficulty of on-site assembly and disassembly.

[0056] Please refer to the above as well. Figures 1 to 9In one specific embodiment of this application, the second connecting frame 502 is fixedly installed at the end of the air supply duct 100 via a flange. Specifically, the end of the second connecting frame 502 away from the first connecting frame 501 is provided with a flange hole, and the end of the air supply duct 100 is also provided with a flange hole. The two are fixedly connected by bolts. A sealing gasket 503 is installed between the end face of the air supply duct 100 and the second connecting frame 502. The sealing gasket 503 is a closed-cell foamed rubber gasket or a silicone rubber gasket, and its shape is adapted to the flange face shape of the second connecting frame 502 to form a reliable airtight seal between the flange connection surfaces. A limiting plate 504 corresponding to the second connecting frame 502 is fixedly installed on the first connecting frame 501 at the outlet of the second connecting frame 502. The limiting plate 504 is a metal plate and is fixed to the first connecting frame 501 by screws. The setting of the limiting plate 504 restricts the position of the second connecting frame 502 relative to the first connecting frame 501, preventing the second connecting frame 502 from sliding and falling out of the first connecting frame 501 during operation, thus ensuring the reliability and safety of the connection.

[0057] The implementation principle of an external quick-installation high-efficiency filter air outlet structure in this application embodiment is as follows: Under normal operating conditions, the first mounting frame 101 and the second mounting frame 102 are locked together by the quick-release locking assembly 300. The filter element 103 is sealed and clamped within the mounting step 105 between the first mounting frame 101 and the second mounting frame 102. The sealing ring 107 is compressed under the clamping force to form a reliable end face seal, preventing airflow from bypassing the gap between the filter element 103 frame and the mounting step 105. The air supply duct 100 is connected to the first mounting frame 101 via the air duct connecting assembly 500. The supplied air enters the interior of the first mounting frame 101 through the air supply duct 100, and is filtered and its airflow regulated by the valve hole 404 of the air valve assembly 400 and the filter element 103 in sequence. Then, it is evenly diffused into the clean room by the diffuser plate 104. The decorative cover 108 is fitted onto the outside of the first mounting frame 101 and the second mounting frame 102, making the air supply outlet look neat and beautiful. The ventilation opening 109 ensures normal airflow.

[0058] When the filter element 103 needs to be replaced, the operator first removes the decorative cover 108, then rotates the knob 304 in the opposite direction to loosen it along the screw 303, removes the retaining groove 302 from the outside of the screw 303, and releases the quick-release locking assembly 300. The second mounting frame 102 is then rotated around the hinge axis 203 to open relative to the first mounting frame 101.

[0059] During the flip-opening process, the locking plate 301 disengages from the push block 405, and the first tension spring 409 pulls the first sliding valve plate 402 back to its original position. The valve hole 404 on the first sliding valve plate 402 is misaligned with the valve hole 404 on the fixed valve plate 401, and the air valve automatically tends to close, reducing the airflow interference from the air duct side when replacing the filter element 103.

[0060] After the second mounting frame 102 is flipped open, the operator can remove the old filter element 103 from the mounting step 105 and then place the new filter element 103 into the mounting step 105. Due to the guiding effect of the inclined guide surface 106, the frame of the new filter element 103 can smoothly slide into the mounting step 105 without jamming or damaging the sealing ring 107. Then the operator flips the second mounting frame 102 closed, and the inclined guide surface 106 continues to guide the frame of the filter element 103 into place. The slot 302 then swings to the outside of the screw 303 to complete the initial positioning. The operator turns the knob 304 to lock the quick-release locking assembly 300. At the same time, the knob 304, through the cooperation of the locking plate 301 and the push block 405, pushes the first sliding valve plate 402 to slide to the alignment position of the valve hole 404, and the air valve opens automatically.

[0061] Finally, the decorative cover 108 is placed over the first mounting frame 101 and the second mounting frame 102 to complete the replacement of the filter element 103. The entire filter element 103 replacement process does not require complete disassembly of the air outlet, does not require the use of professional tools, and is simple, quick and efficient.

[0062] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An external quick-installation high-efficiency filter air outlet structure, characterized in that: The system includes a first mounting frame (101) and a second mounting frame (102), which are hinged together by an elastic hinge connection assembly (200). A quick-release locking assembly (300) is provided on the side of the first mounting frame (101) and the second mounting frame (102) away from the elastic hinge connection assembly (200). A filter element (103) is sealed between the first mounting frame (101) and the second mounting frame (102). An air valve assembly (400) is installed inside the first mounting frame (101). An air duct connection assembly (500) is installed at the end of the first mounting frame (101) away from the second mounting frame (102), and the air duct connection assembly (500) is connected to the air supply duct (100). A diffuser plate (104) is installed at the end of the second mounting frame (102) away from the first mounting frame (101).

2. The external quick-installation high-efficiency filter air outlet structure according to claim 1, characterized in that: The inner surfaces of the first mounting frame (101) and the second mounting frame (102) facing each other are provided with mounting steps (105) corresponding to the frame of the filter element (103). The outer end of the mounting step (105) is provided with a smoothly transitioned oblique guide surface (106), and the inclination angle of the oblique guide surface (106) is 30° to 45°.

3. The external quick-installation high-efficiency filter air outlet structure according to claim 2, characterized in that: Sealing rings (107) are fixedly installed on the step surfaces of the mounting steps (105) on the first mounting frame (101) and the second mounting frame (102).

4. The external quick-installation high-efficiency filter air outlet structure according to claim 1, characterized in that: The first mounting frame (101) and the second mounting frame (102) are fitted with decorative covers (108) on their outer sides. The decorative covers (108) have ventilation openings (109) corresponding to the diffuser plate (104). The side of the decorative covers (108) has clearance openings (110) corresponding to the quick-release locking assembly (300).

5. The external quick-installation high-efficiency filter air outlet structure according to claim 1, characterized in that: The elastic hinge connection assembly (200) includes several movable hinge seats (201) and several fixed hinge seats (202). The movable hinge seats (201) and the fixed hinge seats (202) are hinged together by a hinge shaft (203). The first mounting frame (101) has a stepped hole (204). A slide rod (205) is fixedly connected to the movable hinge seat (201). A limit screw (206) is fixedly installed at one end of the slide rod (205) that passes through the stepped hole (204). A spring (207) fitted on the outside of the slide rod (205) is abutted between the inner end face of the limit screw (206) and the stepped hole (204). The fixed hinge seat (202) is fixedly installed on the second mounting frame (102).

6. The external quick-installation high-efficiency filter air outlet structure according to claim 1, characterized in that: The quick-release locking assembly (300) includes a locking plate (301) fixedly installed on the second mounting frame (102). The locking plate (301) extends toward the first mounting frame (101). A slot (302) is provided at one end of the locking plate (301) away from the second mounting frame (102). A screw (303) is fixedly installed on the first mounting frame (101) corresponding to the slot (302). A knob (304) is threaded onto the screw (303). The inner end face of the knob (304) is set as a pressure surface that mates with the outer surface of the locking plate (301).

7. The external quick-installation high-efficiency filter air outlet structure according to claim 6, characterized in that: The air valve assembly (400) includes a fixed valve plate (401) fixedly installed on the inner side of the first mounting frame (101). A first sliding valve plate (402) that is in contact with the surface of the fixed valve plate (401) is slidably connected to the inner side of the first mounting frame (101). A second sliding valve plate (403) that is in contact with the surface of the first sliding valve plate (402) is slidably connected to the inner side of the first mounting frame (101). The fixed valve plate (401), the first sliding valve plate (402), and the second sliding valve plate (403) are all provided with uniformly distributed valve holes (404). The distance between adjacent valve holes (404) is greater than the size of the valve hole (404).

8. The external quick-installation high-efficiency filter air outlet structure according to claim 7, characterized in that: A push block (405) is fixedly installed on the side of the first sliding valve plate (402) near the quick-release locking assembly (300). The outer end of the push block (405) is configured as a guide surface that cooperates with the inner surface of the locking plate (301). A first pull rod (406) is fixedly installed on the side of the first sliding valve plate (402) away from the quick-release locking assembly (300). The first mounting frame (101) has a first sliding groove (407) corresponding to the first pull rod (406) and a first mounting cavity (408) communicating with the first sliding groove (407). A first tension spring (409) is fixedly installed inside the first mounting cavity (408) near the quick-release locking assembly (300). The other end of the first tension spring (409) is fixedly connected to the first pull rod (406).

9. The external quick-installation high-efficiency filter air outlet structure according to claim 7, characterized in that: A second pull rod (410) is fixedly installed on the side of the second sliding valve plate (403) near the quick-release locking assembly (300). The first mounting frame (101) has a second sliding groove (411) corresponding to the second pull rod (410) and a second mounting cavity (412) communicating with the second sliding groove (411). A telescopic member (413) is fixedly installed at the end of the second mounting cavity (412) away from the quick-release locking assembly (300). The telescopic end of the telescopic member (413) is fixedly connected to the second pull rod (410).

10. The external quick-installation high-efficiency filter air outlet structure according to claim 1, characterized in that: The duct connection assembly (500) includes a first connection frame (501) fixedly installed on the first mounting frame (101) at one end away from the second mounting frame (102). A second connection frame (502) is slidably connected to the end of the first connection frame (501) away from the first mounting frame (101). The second connection frame (502) is fixedly installed at the end of the duct (100) by a flange. A sealing gasket (503) is installed between the end face of the duct (100) and the second connection frame (502). A limiting plate (504) corresponding to the second connection frame (502) is fixedly installed on the first connection frame (501).

Images