Detachable FFU (fan filter unit)

Abstract

The utility model relates to the technical field of fan filter units, in particular to a detachable fan filter unit (FFU) which comprises a machine body and a filter arranged at the bottom of the machine body, and the machine body is detachably connected with the filter through a quick release assembly. The quick release assembly comprises fixing pieces arranged on the two opposite end faces of the machine body and inserting pieces arranged on the filter, the fixing pieces are provided with inserting cavities used for allowing the corresponding inserting pieces to stretch in, the two opposite side faces of each inserting piece are provided with positioning grooves, and telescopic positioning pins are oppositely arranged in the inserting cavities. And the positioning pins extend into the corresponding positioning grooves and are used for realizing the installation of the filter on the machine body. The plug connector extends into the plug cavity, and the telescopic positioning pin extends into the corresponding positioning groove, so that the plug connector can be disassembled and assembled in the fixing piece, the filter can be conveniently disassembled and assembled at the bottom of the machine body, and the filter can be conveniently overhauled and replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of fan filter units, in particular to a detachable FFU fan filter unit. Background Art

[0002] FFU fan filter unit is a self-powered air supply and filtration device. It is a terminal purification device that combines a fan and a filter to form its own powered device. FFU fan filter unit inhales and filters air from the top, and the filtered clean air is evenly delivered over the entire air outlet surface.

[0003] Most of the existing FFU fan filter units are of an integral structure. For example, a FFU fan filter unit disclosed in patent No. CN216522175U has a filter plate installed in a casing. Therefore, it is inconvenient to inspect and replace the filter plate in the FFU fan filter unit, so there is room for improvement. Utility Model Content

[0004] The purpose of the utility model is to provide a detachable FFU fan filter unit to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A detachable FFU fan filter unit comprises a body and a filter arranged at the bottom of the body, wherein the body and the filter are detachably connected via a quick-release assembly;

[0007] The quick-release assembly includes fixing parts arranged on the opposite end surfaces of the body and a plug-in part arranged on the filter. The fixing part is provided with a plug-in cavity for the corresponding plug-in part to extend into, and the opposite two side surfaces of the plug-in part are provided with positioning grooves. Retractable positioning pins are relatively provided in the plug-in cavity, and the positioning pins extend into the corresponding positioning grooves to realize the installation of the filter on the body.

[0008] Preferably, the vertical plug-in cavity on the side wall opposite to the fixing member is provided with a first sliding cavity for sliding installation of the corresponding positioning pin, the positioning pin includes a sliding block arranged in the first sliding cavity through a first spring, the sliding block is provided with a plug-in block, the first spring is used to drive the sliding block to slide and drive one end of the plug-in block to extend into the plug-in cavity, and the fixing member is also provided with a driving member for driving the sliding block to slide and drive the plug-in block to retract.

[0009] Preferably, a second sliding cavity is provided in the vertical plug-in cavity on the side wall opposite to the fixing member, and a strip groove connecting the corresponding first sliding cavity is provided on the bottom wall of the second sliding cavity along the moving direction of the sliding block; the driving member includes a moving block slidably arranged in the second sliding cavity, the moving block is provided with a push rod with one end extending into the plug-in cavity, a slide groove is provided on the upper side surface of the sliding block corresponding to the strip groove, and the moving block is provided with a lever penetrating the corresponding strip groove and extending into the corresponding slide groove; the driving member also includes a lifting block that can be lifted and lowered in the plug-in cavity, and guide inclined surfaces matching the corresponding push rod are provided on the opposite sides of the lifting block, and the lifting block moves downward to drive the guide inclined surface to extrude the push rod into the second sliding cavity, so as to retract the sliding block into the corresponding first sliding cavity.

[0010] Preferably, a cavity is provided in the fixing part and at the upper part, a pressing column extending through the cavity is provided on the lifting block, a retaining ring is provided outside the pressing column in the cavity, and a second spring for pushing the retaining ring upward is provided outside the pressing column in the cavity.

[0011] Preferably, two opposite side surfaces of the machine body are provided with recessed grooves for installing corresponding fixing members.

[0012] Preferably, a mounting boss for mounting the first spring is provided on the side wall of the first sliding cavity corresponding to the sliding block.

[0013] Preferably, handles are provided on the upper side of the body and at opposite ends.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model drives the sliding block to slide in the first sliding cavity by the first spring, so that the plug-in block extends into the corresponding positioning groove, and better fixes the plug-in component on the fixing component, that is, the installation of the filter at the bottom of the body is achieved; by pressing the pressing column downward, the plug-in block can be driven to retract into the corresponding first sliding cavity, that is, the fixation of the plug-in component is released, so as to better realize the disassembly of the filter at the bottom of the body, thereby facilitating the disassembly and assembly of the filter at the bottom of the body, and facilitating the inspection and replacement of the filter.

[0016] 2. The utility model, through the provision of the recessed groove, enables the fixing piece to be fixedly installed in the recessed groove, thereby preventing the fixing piece from protruding out of the side wall of the body, making the appearance more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a structural schematic diagram of a detachable FFU fan filter unit.

[0018] Figure 2 The utility model is a schematic diagram of the explosion structure of a detachable FFU fan filter unit.

[0019] Figure 3 It is a cross-sectional schematic diagram of the quick-release assembly in the utility model.

[0020] Figure 4 It is a half-section schematic diagram of the fixing member in the utility model.

[0021] Figure 5 It is a schematic diagram of the matching structure of the positioning pin and the driving member in the utility model.

[0022] The meaning of the symbols in the figure is:

[0023] 100, body; 101, recessed groove; 102, handle; 103, air inlet; 110, filter; 120, fixing piece; 210, plug-in piece; 301, plug-in cavity; 302, first sliding cavity; 303, second sliding cavity; 304, cavity; 311, positioning groove; 312, first inclined surface; 320, first spring; 330, sliding block; 331, plug-in block; 332, second inclined surface; 340, moving block; 341, push rod; 350, lifting block; 351, guide inclined surface; 352, pressing column; 353, retaining ring; 360, second spring; 411, strip groove; 511, slide groove; 520, lever. DETAILED DESCRIPTION

[0024] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only used to explain the utility model but not to limit it.

[0025] The following is combined with Figure 1-Figure 5 This embodiment is described in further detail.

[0026] like Figure 1-3 As shown, a detachable FFU fan filter unit in this embodiment includes a body 100 and a filter 110 disposed at the bottom of the body 100, and the body 100 and the filter 110 are detachably connected via a quick-release assembly;

[0027] The quick-release assembly includes a fixing part 120 arranged on the opposite end surfaces of the body 100 and a connector 210 arranged on the filter 110. The fixing part 120 is provided with a plug-in cavity 301 for the corresponding connector 210 to extend into. Positioning grooves 311 are provided on the opposite side surfaces of the connector 210. Retractable positioning pins are relatively provided in the plug-in cavity 301. The positioning pins extend into the corresponding positioning grooves 311 to realize the installation of the filter 110 on the body 100.

[0028] The body 100 and the filter 110 in this embodiment are both of existing structures. The body 100 includes a box body with a cavity inside, a fan assembly is arranged in the cavity, an air inlet 103 is arranged on the top of the box body corresponding to the fan assembly, and the filter 110 is installed at the bottom of the box body through a quick-release assembly. The fan assembly is used to suck air from the air inlet 103 on the top of the box body and filter it through the filter 110, and the filtered clean air is sent out from the filter 110, thereby, the FFU fan filter unit can provide clean air to the room; in actual use, in order to facilitate the transportation of the FFU fan filter unit, handles 102 are relatively arranged on the top of the body 100 and at both ends. Through the provision of the handles 102, the operator can better carry the FFU fan filter unit through the handles 102, thereby improving work efficiency;

[0029] In this embodiment, during long-term use, the filter 110 may be clogged, resulting in reduced filtering effect. Therefore, the filter 110 needs to be repaired and replaced. To facilitate the repair and replacement of the filter 110, the filter 110 is detachably connected to the body 100 through a quick-release assembly to facilitate the repair and replacement operation of the operator.

[0030] Among them, through the arrangement of the fixing member 120, the plug-in cavity 301, the positioning pin, the connector 210 and the positioning groove 311, when the connector 210 is extended into the plug-in cavity 301, the relative positioning pin in the plug-in cavity 301 extends into the corresponding positioning groove 311, thereby realizing the fixed connection of the connector 210 in the fixing member 120, that is, by arranging the fixing member 120 at the two opposite side surfaces of the body 100, arranging the connector 210 on the upper side and on both sides of the filter 110, and inserting the connector 210 into the corresponding fixing member 120, the installation of the filter 110 at the bottom of the body 100 is better realized.

[0031] In this embodiment, the vertical plug-in cavity 301 on the side wall opposite to the fixing member 120 is provided with a first sliding cavity 302 for sliding installation of the corresponding positioning pin, and the positioning pin includes a sliding block 330 arranged in the first sliding cavity 302 through a first spring 320, and a plug-in block 331 is provided on the sliding block 330. The first spring 320 is used to drive the sliding block 330 to slide and drive one end of the plug-in block 331 to extend into the plug-in cavity 301. The fixing member 120 is also provided with a driving member for driving the sliding block 330 to slide and drive the plug-in block 331 to retract.

[0032] In actual use of this embodiment, a blocking plate is installed at the opening of the first sliding cavity 302 by screws, and the blocking plate is used to block the first sliding cavity 302, so as to achieve the installation of the sliding block 330 and the first spring 320 in the first sliding cavity 302;

[0033] Through the structure of this embodiment, the first spring 320 always pushes the sliding block 330 to move into the first sliding cavity 302, that is, drives one end of the plug-in block 331 to extend into the plug-in cavity 301, so that when the plug-in block 331 extends into the corresponding positioning groove 311, the first spring 320 can always keep the plug-in block 331 in the state of extending into the corresponding positioning groove 311, so that the fixing effect of the plug-in component 210 in the fixing component 120 is better, that is, the installation effect of the filter 110 at the bottom of the body 100 is better;

[0034] In order to make the first spring 320 drive the sliding block 330 to move smoothly in the first sliding cavity 302, a plurality of first springs 320 are evenly arranged in the first sliding cavity 302. In actual use, in order to facilitate the stable installation of the first spring 320 in the first sliding cavity 302, a mounting boss is provided on the opposite side wall of the sliding block 330. One end of the first spring 320 is sleeved on the outside of the mounting boss, and the other end abuts against the side wall of the blocking plate, so that the first spring 320 is preferably installed in the first sliding cavity 302.

[0035] When the plug-in unit 210 is inserted into the insertion cavity 301, the first bevel 312 is provided on the two opposite sides of the plug-in unit 210, and the second bevel 332 matching with the first bevel 312 is provided at the end of the plug-in unit 331 extending into the insertion cavity 301. When the plug-in unit 210 is inserted into the insertion cavity 301, the first bevel 312 is used to squeeze the second bevel 332 to retract the plug-in unit 331 into the first sliding cavity 302. At this time, the plug-in unit 210 continues to be inserted into the insertion cavity 301. In this process, when the plug-in unit 331 is opposite to the corresponding positioning groove 311, the first spring 320 drives the plug-in unit 331 to automatically extend into the corresponding positioning groove 311, so as to fix the plug-in unit 210 in the fixing unit 120. The operation is simple and convenient.

[0036] Among them, through the setting of the driving member, the driving member can drive the plug-in block 331 to retract into the first sliding cavity 302, thereby releasing the fixation of the plug-in member 210, so that the filter 110 can be disassembled from the body 100, avoiding the inconvenience of inspection and replacement of the filter 110 caused by the integral connection between the two.

[0037] Combination Figure 4 and Figure 5As shown, in this embodiment, a second sliding cavity 303 is provided on the side wall opposite to the fixing member 120 and perpendicular to the plug-in cavity 301, and a strip groove 411 communicating with the corresponding first sliding cavity 302 is provided on the bottom wall of the second sliding cavity 303 along the moving direction of the sliding block 330; the driving member includes a moving block 340 slidably arranged in the second sliding cavity 303, and a top rod 341 with one end extending into the plug-in cavity 301 is provided on the moving block 340, and a sliding groove 411 is provided on the upper side surface of the sliding block 330 corresponding to the strip groove 411. Slot 511, the moving block 340 is provided with a lever 520 that penetrates the corresponding strip groove 411 and extends into the corresponding sliding groove 511; the driving member also includes a lifting block 350 that can be lifted and lowered in the plug-in cavity 301, and the two opposite side surfaces of the lifting block 350 are provided with guide inclined surfaces 351 that cooperate with the corresponding ejector rod 341. The lifting block 350 moves downward to drive the guide inclined surfaces 351 to squeeze the ejector rod 341 to move into the second sliding cavity 303, so as to realize the retraction of the sliding block 330 into the corresponding first sliding cavity 302.

[0038] Through the structure of this embodiment, the lever 520 penetrates the strip groove 411 and extends into the slide groove 511. In the natural state, the lever 520 can abut against the end wall of the slide groove 511, so that in the process of the first spring 320 driving the sliding block 330 to move into the first sliding cavity 302, the lever 520 moves along the strip groove 411 under the squeezing action of the end wall of the slide groove 511, thereby driving the moving block 340 to move into the second sliding cavity 303, so that the push rod 341 extends into the plug-in cavity 301. At this time, the lifting block 350 is at the top of the plug-in cavity 301. The extended end of the push rod 341 abuts against the lowest part of the guiding inclined surface 351. When the lifting block 350 moves downward in the plug-in cavity 301, the guiding inclined surface 351 squeezes the corresponding push rod 341 to retract it into the corresponding second sliding cavity 303, that is, drives the moving block 340 to move in the second sliding cavity 303, drives the lever 520 to move along the strip groove 411, pushes the end wall of the sliding groove 511 to move the sliding block 330 toward the opening of the first sliding cavity 302, and then drives the plug-in block 331 to retract, thereby releasing the fixing of the plug-in component 210 in the fixing component 120;

[0039] In order to make the lever 520 drive the sliding block 330 to move more smoothly, two strip grooves 411 are arranged opposite to each other;

[0040] In this embodiment, a cavity 304 is provided in the fixing member 120 and at the upper part, a pressing column 352 is provided on the lifting block 350 and extends through the cavity 304, a retaining ring 353 is provided on the outer sleeve of the pressing column 352 located in the cavity 304, and a second spring 360 for pushing the retaining ring 353 to move upward is provided on the outer sleeve of the pressing column 352 located in the cavity 304.

[0041] Through the structure of this embodiment, the second spring 360 always pushes the retaining ring 353 to move upward in the cavity 304, thereby driving the lifting block 350 to be located at the top of the plug-in cavity 301. At this time, by pressing down the extended end of the pressing column 352, the lifting block 350 can be driven to move downward in the plug-in cavity 301, thereby achieving the retraction of the plug-in block 331, so that the operation of releasing the fixing of the plug-in component 210 in the fixing component 120 is simple and convenient;

[0042] When the pressing column 352 is released, the lifting block 350 , the sliding block 330 and the moving block 340 are reset under the action of the first spring 320 and the second spring 360 so as to work again.

[0043] In this embodiment, two opposite sides of the body 100 are provided with recessed grooves 101 for installing corresponding fixing members 120 .

[0044] In this embodiment, the opposite sides of the body 100 are recessed inward to form a recessed groove 101, and the bottom end of the recessed groove 101 is opened. The fixing member 120 is fixed in the recessed groove 101 by welding, so that the plug-in component 210 can extend into the fixing member 120 through the opening of the recessed groove 101, thereby realizing the disassembly and assembly of the filter 110 at the bottom of the body 100. Through the above-mentioned structure, the structure of the body 100 is more beautiful.

[0045] Working principle: by lifting the filter 110 upward, the connector 210 on it extends into the corresponding plug-in cavity 301, the plug-in block 331 can automatically extend into the corresponding positioning groove 311, even if the connector 210 is fixed in the fixing member 120, thereby realizing the installation of the filter 110 at the bottom of the body 100; when the filter 110 needs to be inspected and replaced, by pressing the pressing columns 352 on the opposite sides of the body 100, the lifting block 350 moves downward in the plug-in cavity 301, driving the plug-in block 331 to retract into the first sliding cavity 302, that is, releasing its fixation on the connector 210, and dragging the filter 110 downward to realize its removal from the body 100, which is simple and convenient to operate.

[0046] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.

Claims

1. A detachable FFU fan filter unit, comprising a body (100) and a filter (110) arranged at the bottom of the body (100), characterized in that: The body (100) and the filter (110) are detachably connected via a quick-release assembly; The quick-release assembly comprises a fixing member (120) arranged on opposite end surfaces of the body (100) and a plug-in member (210) arranged on the filter (110); the fixing member (120) is provided with a plug-in cavity (301) for the corresponding plug-in member (210) to extend into; positioning grooves (311) are provided on opposite side surfaces of the plug-in member (210); retractable positioning pins are relatively provided in the plug-in cavity (301); the positioning pins extend into corresponding positioning grooves (311) to realize the installation of the filter (110) on the body (100).

2. A detachable FFU fan filter unit according to claim 1, characterized in that: A first sliding cavity (302) is provided in the vertical plug-in cavity (301) on the side wall opposite to the fixing member (120) for slidingly installing a corresponding positioning pin, the positioning pin comprises a sliding block (330) arranged in the first sliding cavity (302) via a first spring (320), a plug-in block (331) is provided on the sliding block (330), the first spring (320) is used to drive the sliding block (330) to slide and drive one end of the plug-in block (331) to extend into the plug-in cavity (301), and a driving member is also provided in the fixing member (120) for driving the sliding block (330) to slide and drive the plug-in block (331) to retract.

3. A detachable FFU fan filter unit according to claim 2, characterized in that: A second sliding cavity (303) is provided on the side wall opposite to the fixing member (120) and perpendicular to the plug-in cavity (301); a strip groove (411) communicating with the corresponding first sliding cavity (302) is provided on the bottom wall of the second sliding cavity (303) along the moving direction of the sliding block (330); the driving member comprises a moving block (340) slidingly arranged in the second sliding cavity (303); the moving block (340) is provided with a push rod (341) with one end extending into the plug-in cavity (301); a sliding groove (511) is provided on the upper side surface of the sliding block (330) corresponding to the strip groove (411); The moving block (340) is provided with a lever (520) penetrating the corresponding strip groove (411) and extending into the corresponding slide groove (511); the driving member also includes a lifting block (350) which is liftably arranged in the plug-in cavity (301); the lifting block (350) has guide inclined surfaces (351) matched with the corresponding push rod (341) at two opposite side surfaces; the lifting block (350) moves downward to drive the guide inclined surfaces (351) to squeeze the push rod (341) to move into the second sliding cavity (303), thereby realizing the retraction of the sliding block (330) into the corresponding first sliding cavity (302).

4. A detachable FFU fan filter unit according to claim 3, characterized in that: A cavity (304) is provided in the fixing member (120) and at the top thereof; a pressing column (352) is provided on the lifting block (350) and extends through the cavity (304); a retaining ring (353) is provided on the outer sleeve of the pressing column (352) in the cavity (304); and a second spring (360) for pushing the retaining ring (353) upward is provided on the outer sleeve of the pressing column (352) in the cavity (304).

5. The detachable FFU fan filter unit according to claim 1 is characterized in that: Concave grooves (101) for installing corresponding fixing members (120) are provided on two opposite side surfaces of the machine body (100).

6. The detachable FFU fan filter unit according to claim 2, characterized in that: A mounting boss for mounting the first spring (320) is provided on a side wall of the first sliding cavity (302) corresponding to the sliding block (330).

7. The detachable FFU fan filter unit according to claim 1, characterized in that: Handles (102) are provided on the upper side of the machine body (100) and at two opposite ends.

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