FFU (fan filter unit)

Abstract

The utility model belongs to the technical field of FFU fans, and particularly relates to an FFU fan filter which comprises an FFU fan outer shell and an HEPA filter, the HEPA filter is located at the lower end of the FFU fan outer shell, an air inlet is formed in the top end of the FFU fan outer shell, the FFU fan filter further comprises an installation frame, the installation frame is fixed to the lower end of the FFU fan outer shell, and the air inlet is formed in the top end of the installation frame. The HEPA filter is mounted in the mounting frame in a drawing manner, and the mounting frame is provided with a dismounting opening for the HEPA filter to penetrate through; the top end of the limiting block is rotationally connected to the mounting frame, and the bottom end of the limiting block is located on the front side of the HEPA filter and used for forming limiting; according to the utility model, the HEPA filter is mounted in a drawing manner, and is limited by adopting the limiting block, so that the HEPA filter is easy to disassemble, clean or replace on the premise of ensuring the stable mounting of the HEPA filter, and the maintenance difficulty is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of FFU fans, and in particular relates to a FFU fan filter. Background Art

[0002] The full name of FFU is "FanFilterUnit", which means fan filter unit or fan filter unit in Chinese. It is a terminal purification device that combines a fan and a filter (high efficiency filter (HEPA) or ultra high efficiency filter (ULPA)) to form its own powered device. To be precise, it is a modular terminal air supply device with its own power and filtering function. The fan draws in air from the top of the FFU and filters it through the HEPA filter. The filtered clean air is evenly delivered over the entire air outlet surface at a wind speed of 0.45m / s±10%.

[0003] The traditional FFU fan filter unit has an integral structure, which makes it difficult to clean the filter.

[0004] Based on the above technical problems, some improved FFU fan filters in the prior art were retrieved. For example, the Chinese utility model patent with authorization announcement number CN217402784U discloses "an FFU fan filter unit", including a first frame, two arc-shaped plates are fixed in the middle of the first frame, a double-axis motor is fixed between the middle of the arc-shaped plates, gears are fixed to the rotating shafts at both ends of the double-axis motor, a second frame and a third frame are slidably provided at the upper and lower ends of the arc-shaped plates, and the second frame and the third frame are respectively located at the two ends of the first frame, and a first slide groove and a second slide groove are respectively provided at the upper and lower ends of the inner walls on both sides of the first frame, so that dust on the fine filter plate can be automatically removed by a dust removal mechanism.

[0005] Although the FFU fan filters in the prior art including those mentioned above can remove dust on the fine filter screen to a certain extent, in actual use, in principle, some dust will adhere to the fine filter screen or even enter the fine filter screen. It is difficult to fully remove the dust using a vacuum cleaner, and when the fine filter screen reaches its use limit, it needs to be disassembled and replaced. The prior art is not convenient for disassembling, cleaning or replacing the fine filter screen.

[0006] In order to solve the above problems, this application proposes a FFU fan filter. Utility Model Content

[0007] In order to solve the above problems existing in the prior art, the utility model provides an FFU fan filter, which has the characteristics of being easy to use and easy to disassemble and assemble.

[0008] To achieve the above object, the utility model provides the following technical solution: an FFU fan filter, comprising an FFU fan outer shell and a HEPA filter, wherein the HEPA filter is located at the lower end of the FFU fan outer shell, and an air inlet is provided at the top of the FFU fan outer shell, and further comprising:

[0009] An installation frame, wherein the installation frame is fixed at the lower end of the FFU fan housing, the HEPA filter is installed in the installation frame by pulling, and the installation frame has a disassembly and assembly port for the HEPA filter to pass through;

[0010] A limit block, the top end of which is rotatably connected to the mounting frame, and the bottom end of which is located at the front side of the HEPA filter for forming a limit.

[0011] As a preferred technical solution of the utility model, it also includes:

[0012] A guide slide block is provided with a guide slide groove on the inner wall of the installation frame. The guide slide block is fixed on the HEPA filter and embedded in the guide slide groove to form a sliding structure.

[0013] As a preferred technical solution of the present invention, the outer wall of the guide sliding block fits the inner wall of the guide sliding groove.

[0014] As a preferred technical solution of the utility model, it also includes:

[0015] A handle is fixed to the end of the HEPA filter.

[0016] As a preferred technical solution of the utility model, it also includes:

[0017] The mounting bolts penetrate through the limit block and are connected to the mounting frame by screwing.

[0018] As a preferred technical solution of the utility model, it also includes:

[0019] A No. 2 manual bolt is connected to the installation frame by threaded engagement after passing through the limit block.

[0020] As a preferred technical solution of the utility model, it also includes a mounting mechanism, the mounting frame is fixed to the lower end of the FFU fan housing by a plurality of mounting mechanisms, and the mounting mechanism includes:

[0021] A hook, the hook being fixed on the FFU fan outer shell;

[0022] A fixing seat, the fixing seat being fixed on the installation frame;

[0023] A plectrum, the plectrum being rotatably connected to the fixing seat by a rotating shaft;

[0024] A hanging ring is installed on the paddle at a position deviating from the rotating shaft and cooperates with the hook.

[0025] As a preferred technical solution of the utility model, it also includes:

[0026] An internally threaded sleeve, the internally threaded sleeve being fixed on the mounting frame;

[0027] A No. 1 manual bolt has a waist-shaped hole on the paddle. The No. 1 manual bolt passes through the waist-shaped hole and is screwed into the internal threaded sleeve by threaded engagement.

[0028] As a preferred technical solution of the utility model, it also includes:

[0029] A rubber sealing gasket is fixed to the lower end of the FFU fan outer shell.

[0030] Compared with the prior art, the beneficial effects of the utility model are:

[0031] In the utility model, the HEPA filter is installed by a pull-out method, and a limit block is used to form a limit. Under the premise of ensuring that the HEPA filter is stably installed, the HEPA filter is also easy to disassemble, clean or replace, thereby reducing the difficulty of maintenance.

[0032] Other additional advantages and beneficial effects of the present application will be given in part in the following description, and in part will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 It is a structural schematic diagram of the utility model;

[0035] Figure 2 For this utility model Figure 1 A is an enlarged structural diagram;

[0036] Figure 3 For this utility model Figure 1 The enlarged structural diagram at B in FIG.

[0037] Figure 4 For this utility model Figure 1 Schematic diagram of the enlarged structure of the installation mechanism.

[0038] In the figure: 1. FFU fan housing; 11. Air inlet; 2. Mounting frame; 21. Disassembly and assembly port; 22. Guide slide; 3. HEPA filter; 31. Handle; 32. Guide slide; 4. Rubber sealing gasket; 5. Limit block; 6. Installation mechanism; 61. Hook; 62. Fixing seat; 63. Pick; 631. Waist-shaped hole; 64. Hanging ring; 65. Rotating shaft; 66. Internal threaded sleeve; 67. No. 1 manual bolt; 7. Mounting bolt; 8. No. 2 manual bolt. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] See also Figure 1-Figure 4 The utility model provides the following technical solutions: an FFU fan filter, comprising an FFU fan outer shell 1 and a HEPA filter 3, the HEPA filter 3 is located at the lower end of the FFU fan outer shell 1, and an air inlet 11 is provided at the top of the FFU fan outer shell 1, and also includes: an installation frame 2 and a limit block 5.

[0041] Further, by Figure 1 and Figure 2 As shown, in the present embodiment, the mounting frame 2 is fixed at the lower end of the FFU fan outer shell 1, the HEPA filter 3 is installed in the mounting frame 2 by a pulling method, and the mounting frame 2 is provided with a disassembly and assembly port 21 for the HEPA filter 3 to pass through, the top end of the limit block 5 is rotatably connected to the mounting frame 2, and the bottom end is located at the front side of the HEPA filter 3 to form a limit. After adopting the above scheme, when in use, the FFU fan outer shell 1 has a built-in fan, and wind enters the FFU fan outer shell 1 from the outside through the air inlet 11, is filtered by the HEPA filter 3 and then discharged, the HEPA filter 3 is installed by a pulling method, and the limit is formed by the limit block 5. Under the premise of ensuring that the HEPA filter 3 is installed stably, it is also easy to disassemble, clean or replace the HEPA filter 3, thereby reducing the difficulty of maintenance.

[0042] Preferably, by Figure 1 and Figure 2As shown, in this embodiment, it also includes: a guide slider 32, and a guide groove 22 is provided on the inner wall of the installation frame 2. The guide slider 32 is fixed on the HEPA filter 3 and embedded in the guide groove 22 to form a sliding structure, thereby realizing the pull-out installation of the HEPA filter 3, and facilitating the installation, use, disassembly, cleaning, and replacement of the HEPA filter 3.

[0043] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, the outer wall of the guide slider 32 fits the inner wall of the guide slot 22. After adopting the above solution, the stability of the installation of the HEPA filter 3 is further improved, and the HEPA filter 3 is prevented from shaking due to the influence of wind.

[0044] Preferably, by Figure 1 As shown, in this embodiment, it also includes: a handle 31, and the handle 31 is fixed to the end of the HEPA filter 3. After adopting the above scheme, the HEPA filter 3 is easy to install and remove through the set handle 31. When removing the HEPA filter 3, the handle 31 is used to pull out the HEPA filter 3.

[0045] Preferably, by Figure 1 and Figure 3 As shown, in this embodiment, it also includes: a mounting bolt 7, which passes through the limit block 5 and is connected to the mounting frame 2 by threaded engagement. After adopting the above scheme, the limit block 5 is rotatably installed by the mounting bolt 7, and the limit block 5 can rotate with the mounting bolt 7 as the axis. When the limit block 5 is rotated to a vertical state, the HEPA filter 3 is limited.

[0046] It should be noted that the above scheme is only a preferred embodiment of the present invention and is not used to limit the present invention. In actual use, the limit block 5 can also be rotatably installed by other means, such as using a rotating shaft, rivets and other structures. However, the limit block 5 is rotatably installed by installing the bolt 7, and the tightness of the installation of the limit block 5 can be adjusted by rotating the installation bolt 7.

[0047] Preferably, by Figure 1 and Figure 3 As shown, in this embodiment, it also includes: a No. 2 manual bolt 8, which passes through the limit block 5 and is connected to the installation frame 2 by threaded engagement. After adopting the above scheme, when the limit block 5 is rotated to a vertical state, the No. 2 manual bolt 8 can be further tightened to ensure that the limit block 5 is stably maintained in a vertical state to avoid accidental rotation of the limit block 5.

[0048] Preferably, by Figure 1 and Figure 4As shown, in this embodiment, it also includes a mounting mechanism 6. The mounting frame 2 is fixed to the lower end of the FFU fan housing 1 by using multiple mounting mechanisms 6, and the mounting mechanism 6 includes: a hook 61, a fixing seat 62, a paddle 63 and a hanging ring 64. The hook 61 is fixed on the FFU fan housing 1, and the fixing seat 62 is fixed on the mounting frame 2. The paddle 63 is rotatably connected to the fixing seat 62 by using a rotating shaft 65. The hanging ring 64 is installed on the paddle 63 at a position deviating from the rotating shaft 65 and cooperates with the hook 61. After adopting the above scheme, the mounting frame 2 is docked at the lower end of the FFU fan housing 1, and then the paddle 63 is flipped up, and the hanging ring 64 is hung on the hook 61, and finally the paddle 63 is flipped down. The paddle 63 tightens the hook 61 through the hanging ring 64 to achieve stable installation of the mounting frame 2. At the same time, it is also easy to disassemble the mounting frame 2, which is convenient for replacing different mounting frames 2 for different HEPA filters 3, and it is also convenient for disassembling and repairing the mounting frame 2.

[0049] Preferably, by Figure 1 and Figure 4 As shown, in this embodiment, it also includes: an internal threaded sleeve 66 and a No. 1 manual bolt 67. The internal threaded sleeve 66 is fixed on the mounting frame 2. A waist-shaped hole 631 is provided on the paddle 63. The No. 1 manual bolt 67 passes through the waist-shaped hole 631 and is screwed into the internal threaded sleeve 66 by threaded engagement. After the mounting frame 2 is fixed, the No. 1 manual bolt 67 is tightened to limit the paddle 63 to prevent the paddle 63 from accidentally flipping over.

[0050] Preferably, by Figure 1 As shown, in this embodiment, it also includes: a rubber sealing gasket 4, which is fixed to the lower end of the FFU fan outer shell 1. Through the setting of the rubber sealing gasket 4, after the mounting frame 2 is fixed, the rubber sealing gasket 4 shrinks to further improve the sealing of the mounting frame 2.

[0051] Components not described in detail herein are prior art.

[0052] Working principle and use process of the utility model: When the FFU fan filter of the utility model is in use, the FFU fan outer shell 1 has a built-in fan, and the wind enters the FFU fan outer shell 1 from the outside through the air inlet 11, and is filtered by the HEPA filter 3 and then discharged;

[0053] The HEPA filter 3 is installed by pulling out, and the limit block 5 is used to form a limit. Under the premise of ensuring the stable installation of the HEPA filter 3, it is also easy to disassemble, clean or replace the HEPA filter 3, which reduces the difficulty of maintenance;

[0054] The mounting frame 2 is fixed to the lower end of the FFU fan housing 1 by means of a plurality of mounting mechanisms 6. The mounting frame 2 is docked to the lower end of the FFU fan housing 1. Then, the paddle 63 is flipped up, and the hanging ring 64 is hung on the hook 61. Finally, the paddle 63 is flipped down, and the paddle 63 tightens the hook 61 through the hanging ring 64, thereby achieving stable installation of the mounting frame 2. At the same time, the mounting frame 2 is also easy to disassemble, so that different mounting frames 2 can be replaced for different HEPA filters 3, and the mounting frame 2 can also be disassembled and repaired.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An FFU fan filter, comprising an FFU fan outer shell (1) and a HEPA filter (3), wherein the HEPA filter (3) is located at the lower end of the FFU fan outer shell (1), and an air inlet (11) is provided at the top end of the FFU fan outer shell (1), characterized in that: Also includes: A mounting frame (2), the mounting frame (2) being fixed at the lower end of the FFU fan housing (1), the HEPA filter (3) being mounted in the mounting frame (2) by pulling, and the mounting frame (2) having a disassembly opening (21) for the HEPA filter (3) to pass through; A limit block (5), the top end of which is rotatably connected to the installation frame (2) and the bottom end of which is located at the front side of the HEPA filter (3) for forming a limit.

2. The FFU fan filter according to claim 1, characterized in that: Also includes: A guide slide block (32) is provided with a guide groove (22) on the inner wall of the installation frame (2); the guide slide block (32) is fixed on the HEPA filter (3) and embedded in the guide groove (22) to form a sliding structure.

3. The FFU fan filter according to claim 2, characterized in that: The outer wall of the guide sliding block (32) fits the inner wall of the guide sliding groove (22).

4. The FFU fan filter according to claim 1, characterized in that: Also includes: A handle (31), wherein the handle (31) is fixed to the end of the HEPA filter (3).

5. The FFU fan filter according to claim 1, characterized in that: Also includes: A mounting bolt (7), wherein the mounting bolt (7) penetrates through the limiting block (5) and is connected to the mounting frame (2) by means of a threaded engagement.

6. The FFU fan filter according to claim 1, characterized in that: Also includes: A No. 2 manual bolt (8), wherein the No. 2 manual bolt (8) penetrates the limit block (5) and is connected to the installation frame (2) by means of a threaded engagement.

7. The FFU fan filter according to claim 1, characterized in that: It also includes a mounting mechanism (6), wherein the mounting frame (2) is fixed to the lower end of the FFU fan outer shell (1) by using a plurality of mounting mechanisms (6), and the mounting mechanism (6) includes: A hook (61), wherein the hook (61) is fixed on the FFU fan outer shell (1); A fixing seat (62), wherein the fixing seat (62) is fixed on the installation frame (2); A paddle (63), wherein the paddle (63) is rotatably connected to the fixing seat (62) by means of a rotating shaft (65); A hanging ring (64) is installed on the paddle (63) at a position deviating from the rotating shaft (65) and matched with the hook (61).

8. The FFU fan filter according to claim 7, characterized in that: Also includes: An internally threaded sleeve (66), wherein the internally threaded sleeve (66) is fixed on the mounting frame (2); A No. 1 manual bolt (67) is provided with a waist-shaped hole (631) on the paddle (63). The No. 1 manual bolt (67) passes through the waist-shaped hole (631) and is screwed into the internal threaded sleeve (66) by means of a threaded screwing method.

9. The FFU fan filter according to claim 1, characterized in that: Also includes: A rubber sealing gasket (4) is fixed to the lower end of the FFU fan outer shell (1).

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