An easy-to-assemble FFU laminar air supply unit

Abstract

The present invention discloses an FFU laminar air supply unit that is easy to assemble, including a high-efficiency filter and a hollow box body, a support frame is provided in the inner cavity of the box body, a fan module is provided on the upper part of the support frame, a mounting port located above the fan module is provided on the top of the box body, a cover plate assembly is fixed to the mounting port by magnetic attraction through a magnetic attraction device, the cover plate assembly is formed with an air inlet grid, an air guide duct is connected below the air inlet grid, a horizontally distributed air distribution plate is installed on the lower part of the support frame through an elastic clamping mechanism, the bottom of the box body is open, and the high-efficiency filter is installed on the bottom of the box body through a quick-install locking mechanism. The present invention assembles or disassembles each component from the upper and lower directions respectively, and a special quick-install structure is provided to realize the installation of the cover plate assembly, the air distribution plate and the high-efficiency filter, thereby avoiding interference and influence, and can further improve the convenience of assembly or disassembly and replacement.

Description

Technical Field

[0001] The invention relates to the technical field of air purification and filtration, and in particular to an FFU laminar flow air supply unit which is easy to assemble. Background Art

[0002] FFU laminar air supply unit is an air self-purification device that can be used for terminal air supply in clean rooms and other places. FFU laminar air supply unit generally includes a metal box and a high-efficiency filter. The fan inside the metal box drives the impeller to rotate, thereby absorbing air from the external space and filtering and purifying it through the high-efficiency filter, and then delivering clean air.

[0003] As the FFU laminar air supply unit is in operation for a long time, a large amount of dust will gradually accumulate inside it. When the accumulated dust reaches a certain amount, it will affect the purification and filtration efficiency. However, the existing FFU laminar air supply unit generally uses screws to fix and lock various components such as high-efficiency filters and covers. It is necessary to twist and remove each screw one by one, which is time-consuming and labor-intensive, making it inconvenient to disassemble and assemble for maintenance or replacement. Summary of the invention

[0004] The purpose of the present invention is to provide an FFU laminar air supply unit that is easy to assemble. By setting a special quick-install structure, the cover plate assembly, the air distribution plate and the high-efficiency filter can be installed, which effectively solves the problem that the conventional FFU laminar air supply unit in the prior art is not easy to disassemble for maintenance or replacement.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An FFU laminar air supply unit that is easy to assemble, comprises a high-efficiency filter and a hollow box body, a support frame is provided in the inner cavity of the box body, a fan module is provided on the upper part of the support frame, and the fan module has an air inlet distributed vertically upward and an air outlet distributed horizontally toward the periphery; a mounting port located above the fan module is provided on the top of the box body, a cover plate assembly is magnetically fixed to the mounting port by a magnetic attraction device, the cover plate assembly forms an air inlet grid, and an air guide duct extending toward the air inlet of the fan module is connected to the lower part of the air inlet grid; a horizontally distributed air balancing plate is installed on the lower part of the support frame by an elastic clamping mechanism, and the air balancing plate is distributed with air balancing holes; the bottom of the box body is open, and the high-efficiency filter is installed on the bottom of the box body by a quick-install locking mechanism.

[0007] Furthermore, the support frame includes a horizontally distributed support plate, and the support plate is vertically bent at both ends along the length direction to provide a fixing plate, and the fixing plate is connected to the side wall of the box body through screws. The support plate is vertically bent at both ends along the width direction to provide an L-shaped distributed clamping plate, and an assembly port is opened in the middle of the air equalizing plate, and the edge of the assembly port is connected to the clamping plate through the elastic clamping mechanism.

[0008] Furthermore, the elastic clamping mechanism includes a first clamping block and a second clamping block symmetrically distributed on both sides of the assembly port and a spring connected between the first clamping block and the second clamping block, the first clamping block and the second clamping block both include a lower clamping plate, an upper clamping plate and a connecting plate connected between the upper clamping plate and the lower clamping plate, the upper clamping plate and the lower clamping plate form a clamping groove for clamping the air balancing plate and the clamping plate, the clamping groove on the first clamping block is opposite to the opening direction of the clamping groove on the second clamping block, and the first clamping block and the second clamping block are both provided with a pulling ring. In this way, the elastic force of the spring is used to drive the first clamping block and the second clamping block to move in opposite directions respectively, so as to abut and clamp with the corresponding two L-shaped clamping plates on the support frame, thereby realizing the quick clamping and fixing of the air balancing plate, and when disassembly is required, it can be operated with one hand, and the air balancing plate can be loosened and removed from the support frame by pulling the two pulling rings with fingers, which is very convenient.

[0009] Furthermore, the upper surface of the lower clamping plate is recessed with a guide slot parallel to the spring, and the lower surface of the wind equalizing plate is correspondingly provided with a guide rail slidably connected to the guide slot. By providing the matching guide slot and guide rail, a better guiding effect can be achieved on the movement trajectory of the first clamping block and the second clamping block.

[0010] Furthermore, an anti-drop-off limiter is provided on the lower surface of the lower clamping plate, and a limit baffle protruding and extending toward the air balancing plate is provided on the end of the anti-drop-off limiter away from the spring. By providing the anti-drop-off limiter, when the air balancing plate needs to be disassembled, the limit baffle on the anti-drop-off limiter can be used to press against one end of the guide rail, thereby preventing the first clamping block and the second clamping block from separating and falling off from the guide rail.

[0011] Furthermore, the mounting opening has a positioning step that is recessed toward the inner cavity of the box body, and the magnetic attraction device includes a first magnet block disposed on the cover assembly and a second magnet block disposed inside the positioning step, and the first magnet block and the second magnet block are magnetically attracted to each other. By providing the recessed positioning step, the lower structure of the cover assembly can be correspondingly sunken and fixed at the positioning step, so that the surface of the cover assembly can be basically flush with the top surface of the box body after being magnetically fixed by the magnetic attraction device, so that the overall structure has a relatively flat appearance visual effect.

[0012] Furthermore, the cover plate assembly includes a lower cover plate and an upper cover plate, the outer contour of the lower cover plate corresponds to the contour of the positioning step, the air inlet grille is located in the middle area of ​​the lower cover plate, and the middle part of the upper cover plate is provided with an air-avoiding opening corresponding to the exposure of the air inlet grille, the inner edge of the upper cover plate is fixedly connected to the outer edge of the lower cover plate, and a sealing ring is provided between the lower surface of the upper cover plate and the top surface of the box. In this way, when the cover plate assembly is magnetically fixed, the upper cover plate can cover the gap between the positioning step and the lower cover plate, and the sealing ring can be further used to improve the sealing between the cover plate assembly and the top surface of the box.

[0013] Furthermore, the air guide duct includes an annular assembly ring plate and a vertically arranged air guide duct, the outer peripheral edge of the assembly ring plate is fixedly connected to the lower cover plate by screws, and the inner side edge of the assembly ring plate is connected to the upper part of the air guide duct by an arc surface. In this way, the air guide duct can be fixedly connected to the lower cover plate by a plurality of screws, so that when the cover plate assembly is installed and removed, the air guide duct can be installed and removed at the same time.

[0014] Furthermore, the quick-install locking mechanism includes a threaded column, a butterfly nut and an L-shaped locking frame, wherein the threaded column is vertically fixed to the side wall of the box, the butterfly nut is threadedly connected to the threaded column, and the L-shaped locking frame includes a locking plate distributed along the height direction of the box and a clamping plate for clamping the frame of the high-efficiency filter, the clamping plate is integrally bent and connected to the locking plate, the locking plate is provided with a long strip-shaped locking hole for the threaded column to pass through, and the locking plate is located between the butterfly nut and the box. On the one hand, the L-shaped locking frame can be used to hook the high-efficiency filter toward the box, and the butterfly nut is used to lock it, so as to fix the high-efficiency filter; on the other hand, since the L-shaped locking frame is provided with a long strip-shaped locking hole, when assembling or disassembling, it is only necessary to slightly twist the butterfly nut to loosen the L-shaped locking frame, and by pulling the L-shaped locking frame a short distance and rotating it outward, the high-efficiency filter can be quickly assembled or disassembled without completely disassembling the butterfly nut and the L-shaped locking frame.

[0015] Furthermore, the bottom edge of the box is bent outward to provide a first L-shaped positioning plate for abutting against the upper part of the frame of the high-efficiency filter; the bottom edge of the box is bent inward to provide a second L-shaped positioning plate for abutting against the edge of the air distribution plate. By providing the first L-shaped positioning plate, the assembled high-efficiency filter can be positioned to improve the efficiency of assembly; by providing the second L-shaped positioning plate, the two ends of the air distribution plate can be limited.

[0016] Compared with the prior art, the present invention provides a FFU laminar air supply unit that is easy to assemble and has the following beneficial effects:

[0017] The present invention can quickly assemble and disassemble the cover plate assembly with the air inlet grid and the air guide duct by adopting a magnetic attraction method; the high-efficiency filter can be quickly fixed or disassembled at the bottom of the box by a quick-install locking mechanism; and the air balancing plate can be quickly fixed or removed at the bottom of the support frame by installing an elastic clamping mechanism on the air balancing plate. The present invention assembles or disassembles each component from the upper and lower directions respectively to avoid interference, which can further improve the convenience of assembly or disassembly and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of a half-section structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the overall assembly of the present invention;

[0022] Figure 4 This is a schematic diagram of the installation of the cover assembly and the high-efficiency filter;

[0023] Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0024] Figure 6 is a structural schematic diagram of a cover plate assembly;

[0025] Figure 7 The figure is a schematic diagram of the installation of the air balancing plate;

[0026] Figure 8 It is a structural schematic diagram of the wind balancing plate;

[0027] Fig. 9 It is a structural schematic diagram of the elastic clamping mechanism.

[0028] Figure numerals: 1, box body; 11, installation opening; 12, positioning step; 13, first L-shaped positioning plate; 14, second L-shaped positioning plate; 2, support frame; 21, support plate; 22, fixing plate; 23, clamping plate; 3, fan module; 31, air inlet; 32, air outlet; 33, fan; 34, impeller; 4, magnetic attraction device; 41, first magnet block; 42, second magnet block; 5, cover plate assembly; 51, upper cover plate; 511, air avoidance opening; 52, lower cover plate; 521, air inlet grid; 53, air guide duct; 531, assembly ring plate; 532, air guide duct; 533, arc surface; 54 , sealing ring; 6, elastic clamping mechanism; 61, first clamping block; 62, second clamping block; 63, spring; 64, upper clamping plate; 65, lower clamping plate; 651, guide slide groove; 66, connecting plate; 661, clamping column; 67, clamping groove; 68, pulling ring; 69, anti-falling limiter; 691, limit baffle; 692, pulling plate; 7, air balancing plate; 71, assembly port; 72, guide slide rail; 8, quick-install locking mechanism; 81, threaded column; 82, butterfly nut; 83, L-shaped lock frame; 831, lock plate; 832, clamping plate; 833, lock hole; 9, speed regulator; 10, high-efficiency filter. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] The present invention is further described in detail below through detailed embodiments in conjunction with the accompanying drawings.

[0035] Please refer to Figures 1 to 9, this embodiment provides a FFU laminar air supply unit that is easy to assemble, including a high-efficiency filter 10 and a hollow box 1. The box 1 can be prepared by forming a metal plate. A support frame 2 is provided in the inner cavity of the box 1, and a fan module 3 is provided on the upper part of the support frame 2. The fan module 3 has an air inlet 31 distributed vertically upward and an air outlet 32 ​​distributed horizontally toward the periphery. The top of the box 1 is provided with a mounting port 11 located above the fan module 3, and the mounting port 11 is magnetically fixed with a cover assembly 5 through a magnetic suction device 4. The cover assembly 5 is formed with an air inlet grid 521 that is convenient for inhaling external air, and the lower part of the air inlet grid 521 is connected to an air guide duct 53 extending toward the air inlet of the fan module 3. The lower part of the support frame 2 is installed with a horizontally distributed air distribution plate 7 through an elastic clamping mechanism 6, and the air distribution plate 7 is distributed with air distribution holes, so as to ensure that the inhaled air can be evenly filtered and purified through the high-efficiency filter 10. The bottom of the box 1 is open, and the high-efficiency filter 10 is installed at the bottom of the box 1 through a quick-install locking mechanism 8. In this way, the cover assembly with the air inlet grid and the air guide duct can be quickly assembled and disassembled by using a magnetic attraction method; the high-efficiency filter can be quickly fixed or disassembled at the bottom of the box by using a quick-install locking mechanism; and the air balancing plate can be quickly fixed or removed at the bottom of the support frame by installing an elastic clamping mechanism on the air balancing plate, so that an elastic clamping method can be adopted. In addition, since each component is assembled or disassembled from the upper and lower directions respectively, interference can be avoided, and the convenience of assembly or disassembly and replacement can be further improved.

[0036] In some specific embodiments, reference Figure 2 , Figure 3 and Figure 7 The support frame 2 includes a horizontally distributed support plate 21, and the two ends of the support plate 21 along the length direction are vertically bent to provide a fixing plate 22, and the fixing plate 22 is connected to the side wall of the box body 1 by screws, and the two ends of the support plate 21 along the width direction are vertically bent to provide an L-shaped distribution of the clamping plate 23, and the middle of the air balancing plate 7 is provided with a rectangular assembly opening 71, and the edge of the assembly opening 71 is connected to the clamping plate 23 through the elastic clamping mechanism 6. In this way, when the air balancing plate is disassembled and removed, the elastic clamping mechanism can also be fixed at the assembly opening through its own elastic activity.

[0037] In some specific embodiments, reference Figure 2 , Figure 3 , Figure 7 to Figure 9The elastic clamping mechanism 6 includes a first clamping block 61 and a second clamping block 62 symmetrically distributed on both sides of the assembly port 71, and a spring 63 connected between the first clamping block 61 and the second clamping block 62. The first clamping block 61 and the second clamping block 62 each include a lower clamping plate 65, an upper clamping plate 64, and a connecting plate 66 connected between the upper clamping plate 64 and the lower clamping plate 65. The upper clamping plate 64 and the lower clamping plate 65 form a clamping groove 67 for clamping the air balancing plate 7 and the clamping plate 23. The opening direction of the clamping groove on the first clamping block 61 is opposite to that of the clamping groove on the second clamping block 62. The first clamping block 61 and the second clamping block 62 are both provided with a pulling ring 68. In this way, the elastic force of the spring is used to drive the first clamp block and the second clamp block to move in opposite directions, so as to abut and clamp with the two corresponding L-shaped clamping plates on the support frame, thereby quickly clamping and fixing the air balancing plate. When it needs to be disassembled, it can be operated with one hand, and the air balancing plate can be loosened and removed from the support frame by pulling the two pulling rings with fingers, which is very convenient. Specifically, the first clamp block 61 and the second clamp block 62 are both provided with a clamping column 661 connected to the spring 63 on the side surface of one end close to the spring 63. Two springs 63 are symmetrically provided.

[0038] In some improved embodiments, reference Figure 8 and Fig. 9 The upper surface of the lower clamping plate 65 is recessed with a guide slot 651 parallel to the spring 63, and the lower surface of the wind equalizing plate 7 is correspondingly provided with a guide rail 72 slidably connected to the guide slot 651. By providing the matching guide slot and guide rail, a better guiding effect can be achieved on the movement trajectory of the first clamping block and the second clamping block. As an example, the cross-sectional shape of the guide slot 651 and the guide rail 72 is a trapezoid.

[0039] In some improved embodiments, reference Figure 7 and Fig. 9 The lower surface of the lower clamping plate 65 is provided with an anti-dropping stopper 69, and the anti-dropping stopper 69 is provided with a stopper baffle 691 protruding and extending toward the air balancing plate 7 at the end away from the spring 63. By providing the anti-dropping stopper, when the air balancing plate needs to be disassembled, the stopper baffle on the anti-dropping stopper can be used to press against one end of the guide rail, thereby preventing the first clamping block and the second clamping block from separating and falling off from the guide rail. Specifically, the anti-dropping stopper 69 is provided with a pulling plate 692 for fixing the pulling ring 68 at the end close to the spring 63.

[0040] In some specific embodiments, reference Figure 3 , Figure 4 and Figure 6The mounting opening 11 has a positioning step 12 that is recessed toward the inner cavity of the box body 1. The magnetic device 4 includes a first magnet block 41 disposed on the cover assembly 5 and a second magnet block 42 disposed inside the positioning step 12. The first magnet block 41 and the second magnet block 42 are magnetically attracted to each other. By providing the recessed positioning step, the lower structure of the cover assembly can be correspondingly sunken and fixed at the positioning step, so that the surface of the cover assembly can be basically flush with the top surface of the box body after being magnetically fixed by the magnetic device, so that the overall structure has a relatively flat appearance visual effect.

[0041] In some specific embodiments, reference Figure 1 to Figure 4 and Figure 6 The cover plate assembly 5 includes a lower cover plate 52 and an upper cover plate 51. The outer contour of the lower cover plate 52 corresponds to the contour of the positioning step 12. The air inlet grille 521 is located in the middle area of ​​the lower cover plate 52. The middle part of the upper cover plate 51 is provided with an air avoidance opening 511 corresponding to the exposure of the air inlet grille 521. The inner edge of the upper cover plate 51 is fixedly connected to the outer edge of the lower cover plate 52 by welding. A sealing ring 54 is provided between the lower surface of the upper cover plate 51 and the top surface of the box body 1. In this way, when the cover plate assembly is fixed by magnetic attraction, the upper cover plate can cover the gap between the positioning step and the lower cover plate, and the sealing ring can be further used to improve the sealing between the cover plate assembly and the top surface of the box body.

[0042] As an example, the positioning step 12 is octagonal, and four magnetic devices 4 are provided, wherein the first magnet block 41 is embedded in the lower surface of the upper cover plate 51 , and the second magnet block 42 is embedded in the inner side of the positioning step 12 .

[0043] In some specific embodiments, reference Figure 2 , Figure 4 and Figure 6 The air guide duct 53 includes an annular assembly ring plate 531 and a vertically arranged air guide duct 532. The outer peripheral edge of the assembly ring plate 531 is fixedly connected to the lower cover plate 52 by screws, and the inner side edge of the assembly ring plate 531 is connected to the upper part of the air guide duct 532 by an arc surface 533. In this way, the air guide duct can be fixedly connected to the lower cover plate by using a plurality of screws, so that when the cover plate assembly is assembled and disassembled, the air guide duct can be assembled and disassembled together.

[0044] In some specific embodiments, reference Figure 1 to Figure 5The quick-install locking mechanism 8 includes a threaded column 81, a butterfly nut 82 and an L-shaped locking frame 83. The threaded column 81 is vertically welded and fixed to the side wall of the box body 1. The butterfly nut 82 is threadedly connected to the threaded column 81. The L-shaped locking frame 83 includes a locking plate 831 distributed along the height direction of the box body 1 and a clamping plate 832 for clamping the frame of the high-efficiency filter 10. The clamping plate 832 is integrally bent and connected with the locking plate 831. The locking plate 831 is provided with a long strip-shaped locking hole 833 for the threaded column 81 to pass through. The locking plate 831 is located between the butterfly nut 82 and the box body 1. On the one hand, the L-shaped lock frame can be used to hook the high-efficiency filter toward the box body and lock it with a butterfly nut to fix the high-efficiency filter; on the other hand, since the L-shaped lock frame has a long lock hole, when assembling or disassembling, it is only necessary to slightly twist the butterfly nut to loosen the L-shaped lock frame, and by pulling the L-shaped lock frame a short distance and rotating it outward, the high-efficiency filter can be quickly assembled or disassembled without completely removing the butterfly nut and the L-shaped lock frame.

[0045] In some improved embodiments, reference Figure 1 , Figure 3 , Figure 4 and Figure 7 The bottom edge of the box body 1 is bent outward to provide a first L-shaped positioning plate 13 for abutting against the upper part of the frame of the high-efficiency filter 10. By providing the first L-shaped positioning plate, the assembled high-efficiency filter can be positioned to improve the efficiency of assembly. As an example, two first L-shaped positioning plates 13 are provided, and the two first L-shaped positioning plates 13 are distributed along the length direction of the box body 1.

[0046] In some improved embodiments, reference Figure 2 and Figure 7 The bottom edge of the box body 1 is bent inwardly to provide a second L-shaped positioning plate 14 for abutting against the edge of the air balancing plate 7. By providing the second L-shaped positioning plate, the two ends of the air balancing plate can be limited. As an example, two second L-shaped positioning plates 14 are provided, and the two second L-shaped positioning plates 14 are distributed along the width direction of the box body 1.

[0047] In some specific embodiments, reference Figure 2 and Figure 3 The fan module 3 includes a fan 33 and an impeller 34 connected to the fan 33. The impeller 34 includes an upper guide plate, a lower guide plate, and a plurality of blades located between the upper guide plate and the lower guide plate. The upper guide plate and the lower guide plate together form an air inlet channel. The air inlet 31 of the air inlet channel is vertically distributed upward, and the air outlet 32 ​​of the air inlet channel is horizontally distributed toward the periphery. In this way, under the drive of the fan, the external air is sucked in from top to bottom by the rotating impeller, and blown out horizontally toward the periphery of the inner cavity of the box.

[0048] In some specific embodiments, reference Figure 1 The box 1 is also equipped with a speed regulator 9 connected to the fan module 3, so that the fan can be started or shut down, thereby adjusting and controlling the wind speed of the air supply. The speed regulator 9 is provided with a digital display screen, a number of switches and wiring ports, and multiple FFU laminar air supply units can be remotely controlled through external power supply lines and data lines.

[0049] The assembly and disassembly process of the present invention is as follows:

[0050] During assembly, the box body 1 is formed by bending metal plates. The support frame 2 with the fan module 3 installed is first placed into the inner cavity of the box body 1 from bottom to top, and fixed on both sides of the inner cavity of the box body 1 with screws. The fixed support frame 2 can also improve the overall structural strength of the box body 1.

[0051] Afterwards, refer to Figure 7 and Fig. 9 The air balancing plate 7 can be installed with one hand. First, use your fingers to pull the two pulling rings 68 to move the air balancing plate 7 upward close to the bottom of the support frame 2, then release the pulling ring 68, and use the elastic force of the spring 63 to drive the first clamping block 61 and the second clamping block 62 to move in opposite directions respectively, so that the clamping grooves 67 on the first clamping block 61 and the second clamping block 62 can abut and clamp the clamping plate 23 and the air balancing plate 7, thereby quickly clamping and fixing the air balancing plate 7 to the bottom of the support frame 2.

[0052] Next, refer to Figure 5 and Figure 4 , just slightly twist the butterfly nut 82 to loosen the L-shaped lock frame 83, pull the L-shaped lock frame 83 a short distance and rotate it outward, and then press the high-efficiency filter 10 upward against the bottom of the box body 1. At this time, the two first L-shaped positioning plates 13 at the bottom of the box body 1 will also position the high-efficiency filter 10, and then rotate the L-shaped lock frame 83 in the opposite direction to a vertical state and hook the frame of the high-efficiency filter 10, and twist and lock the butterfly nut 82 to quickly fix the high-efficiency filter 10.

[0053] Best, reference Figure 4 By adopting a magnetic attraction method, the cover assembly 5 having the air inlet grille 521 and the air guide duct 53 can be quickly magnetically fixed on the positioning step 12, and the sealing ring 54 is used to improve the sealing between the cover assembly 5 and the top surface of the box body 1.

[0054] When disassembly is required, the reverse operation is sufficient. Since each component is assembled or disassembled from the upper and lower directions respectively, interference is avoided, which can further improve the convenience of assembly or disassembly and replacement.

[0055] The above embodiments are merely illustrative of the concept and technical solution of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

[0056] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An easy-to-assemble FFU laminar air supply unit, comprising a high-efficiency filter and a hollow box, characterized in that: A support frame is provided in the inner cavity of the box body, and a fan module is provided on the upper part of the support frame, and the fan module has an air inlet distributed vertically upward and an air outlet distributed horizontally toward the periphery; a mounting port located above the fan module is provided on the top of the box body, and a cover plate assembly is fixed to the mounting port by magnetic attraction through a magnetic attraction device, and the cover plate assembly is formed with an air inlet grid, and an air guide duct extending toward the air inlet of the fan module is connected below the air inlet grid; a horizontally distributed air balancing plate is installed on the lower part of the support frame through an elastic clamping mechanism, and the air balancing plate is distributed with air balancing holes; the bottom of the box body is open, and the high-efficiency filter is installed at the bottom of the box body through a quick-install locking mechanism; The support frame includes a horizontally distributed support plate, and the two ends of the support plate along the length direction are vertically bent to provide a fixing plate, and the fixing plate is connected to the side wall of the box body by screws, and the two ends of the support plate along the width direction are vertically bent to provide an L-shaped clamping plate, and the middle part of the air distribution plate is provided with an assembly opening, and the edge of the assembly opening is connected to the clamping plate through the elastic clamping mechanism; The elastic clamping mechanism includes a first clamping block and a second clamping block symmetrically distributed on both sides of the assembly port and a spring connected between the first clamping block and the second clamping block. The first clamping block and the second clamping block each include a lower clamping plate, an upper clamping plate and a connecting plate connected between the upper clamping plate and the lower clamping plate. The upper clamping plate and the lower clamping plate form a clamping groove for clamping the air equalizing plate and the clamping plate. The opening direction of the clamping groove on the first clamping block is opposite to that of the clamping groove on the second clamping block. The first clamping block and the second clamping block are both provided with a pulling ring.

2. The easy-to-assemble FFU laminar air supply unit according to claim 1 is characterized in that: The upper surface of the lower clamping plate is recessed with a guide slot parallel to the spring, and the lower surface of the air balancing plate is correspondingly provided with a guide rail slidably connected to the guide slot.

3. The easy-to-assemble FFU laminar air supply unit according to claim 2 is characterized in that: An anti-falling limiting piece is provided on the lower surface of the lower clamping plate, and a limiting baffle protruding and extending toward the air equalizing plate is provided on the end of the anti-falling limiting piece away from the spring.

4. The easy-to-assemble FFU laminar air supply unit according to claim 1 is characterized in that: The installation opening has a positioning step that is recessed toward the inner cavity of the box body. The magnetic attraction device includes a first magnet block arranged on the cover assembly and a second magnet block arranged on the inner side of the positioning step. The first magnet block and the second magnet block are magnetically attracted to each other.

5. The easy-to-assemble FFU laminar air supply unit according to claim 4 is characterized in that: The cover plate assembly includes a lower cover plate and an upper cover plate, the outer contour of the lower cover plate corresponds to the contour of the positioning step, the air inlet grille is located in the middle area of ​​the lower cover plate, and the middle of the upper cover plate is provided with an air-avoiding opening corresponding to the exposure of the air inlet grille, the inner edge of the upper cover plate is fixedly connected to the outer peripheral edge of the lower cover plate, and a sealing ring is provided between the lower surface of the upper cover plate and the top surface of the box body.

6. The easy-to-assemble FFU laminar air supply unit according to claim 5 is characterized in that: The air guide duct includes a circularly distributed assembly ring plate and a vertically distributed air guide duct, the outer peripheral edge of the assembly ring plate is fixedly connected to the lower cover plate by screws, and the inner side edge of the assembly ring plate is connected to the upper part of the air guide duct by an arc surface.

7. The easy-to-assemble FFU laminar air supply unit according to claim 1 is characterized in that: The quick-release locking mechanism includes a threaded column, a butterfly nut and an L-shaped locking frame. The threaded column is vertically fixed to the side wall of the box body. The butterfly nut is threadedly connected to the threaded column. The L-shaped locking frame includes a locking plate distributed along the height direction of the box body and a clamping plate for clamping the frame of the high-efficiency filter. The clamping plate is integrally bent and connected to the locking plate. The locking plate is provided with a long strip-shaped locking hole for the threaded column to pass through. The locking plate is located between the butterfly nut and the box body.

8. The easy-to-assemble FFU laminar air supply unit according to claim 1 is characterized in that: The bottom edge of the box body is bent outward to form a first L-shaped positioning plate for abutting against the upper part of the frame of the high-efficiency filter; the bottom edge of the box body is bent inward to form a second L-shaped positioning plate for abutting against the edge of the air distribution plate.

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