Fan filter unit

Abstract

The utility model relates to a fan filter unit, which comprises a box body, a fan and a filter, the fan and the filter are arranged in the box body, the top and the bottom of the box body are respectively provided with an air inlet and an air outlet which are communicated with the inside of the box body, the air inlet of the fan faces the air inlet, and the filter is positioned on one side of the air outlet of the fan and is detachably connected with the inner wall of the box body; the fan filtering unit further comprises a flow guide plate, a lock catch is arranged on the flow guide plate, a lock column matched with the lock catch is arranged at the bottom of the box body so that the flow guide plate can be detachably installed at the air outlet, a plurality of flow guide holes communicated with the interior of the box body are formed in the flow guide plate at intervals, and the flow guide holes are suitable for guiding airflow to be evenly blown out. According to the fan filtering unit of the structure, the multiple flow guide holes communicated with the interior of the box body are formed in the flow guide plate at intervals, so that gas filtered by the filter can be guided by the flow guide holes to be evenly blown into a room, airflow turbulence can be effectively avoided, and the uniformity of the air outlet speed is improved.

Description

Technical Field

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

[0002] A fan filter unit (FFU), also known as a fan filter unit (FFU), is a self-powered, modular terminal air supply device that combines a fan and a filter or ultra-high-pressure filter.

[0003] In current fan-filter units, when the filter's efficiency decreases or reaches the end of its service life and needs to be replaced, the user must climb onto the ceiling to lift the fan housing and then replace it. This makes disassembly and assembly time-consuming and labor-intensive, and prevents rapid maintenance and replacement. Furthermore, when the clean air filtered by the filter enters the room, the air flow is chaotic and the wind speed is uneven. Utility Model Content

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a fan filter unit.

[0005] The present application provides a fan filter unit, comprising a housing, a fan and a filter disposed inside the housing, wherein the top and bottom of the housing are respectively provided with an air inlet and an air outlet communicating with the interior thereof, the air inlet of the fan facing the air inlet, the filter being located on one side of the air outlet of the fan and being detachably connected to the inner wall of the housing;

[0006] The fan filter unit also includes a guide plate, which is provided with a lock buckle. The bottom of the box is provided with a lock column adapted to the lock buckle, so that the guide plate can be detachably installed at the air outlet. The guide plate is provided with a plurality of guide holes that are communicated with the interior of the box at intervals, and the guide holes are suitable for guiding the airflow to be blown out evenly.

[0007] In a possible embodiment, both inner walls of the box body have connecting portions extending along their inner sides, and an L-shaped support block is connected to the connecting portion. The end of the filter is overlapped on the support block so that the filter can be detachably arranged inside the box body.

[0008] In a possible implementation, a first mounting hole is formed on the connecting portion, and a second mounting hole that matches the first mounting hole is formed on the supporting block in a vertical direction.

[0009] In a possible embodiment, a stepped groove is formed on the outer side of the air outlet, the lock column is fixed in the stepped groove, and the lock buckle is provided on a side of the guide plate close to the stepped groove.

[0010] In a possible embodiment, a sealing strip is further included, and the sealing strip is provided on four edges of the guide plate, so that when the guide plate covers the air outlet, the sealing strip abuts against the edge of the air outlet.

[0011] In a possible embodiment, an air guide ring is further included, wherein the air guide ring has an air guide cavity running through both ends thereof, one end of the air guide ring close to the fan extends into the air inlet and is connected to the air inlet end of the fan, and the other end is exposed outside the air inlet.

[0012] In a possible embodiment, a ventilation frame is further included. The ventilation frame cover is arranged on the periphery of the air guide ring and is connected to the top of the box body. The ventilation frame is provided with ventilation mesh holes at a position corresponding to the air guide ring.

[0013] In a possible implementation, the length of the guide plate is greater than the length of the filter, and the length of the region where the guide holes are provided on the guide plate is equal to or greater than the length of the filter.

[0014] In a possible implementation, a differential pressure gauge is further included, which is embedded in the surface of the box and is used to detect the gas pressure inside the box.

[0015] In a possible implementation manner, a handle is provided on the top of the box.

[0016] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0017] An air outlet is provided at the bottom of the housing, and a deflector plate is removably connected to the housing by means of a lock latch and a lock post, sealing the air outlet. This allows for filter replacement or blower maintenance by simply removing the deflector plate from the housing, leaving the air outlet open. This makes assembly and disassembly simpler and faster, allowing for quick maintenance or replacement. Furthermore, multiple guide holes are spaced apart on the deflector plate, connecting to the housing. This allows filtered air to be evenly directed into the room through the holes, effectively preventing airflow turbulence and improving the uniformity of air flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] In the attached figure:

[0021] Figure 1 This is a structural diagram of a fan filter unit of the present application;

[0022] Figure 2 This is an exploded schematic diagram of a fan filter unit of the present application;

[0023] Figure 3 This is a structural schematic diagram of a guide plate in a fan filter unit of the present application;

[0024] Figure 4 This is a schematic top view of a box in a fan filter unit of the present application;

[0025] Figure 5 This is a schematic diagram of the status of replacing the filter of a fan filter unit in the present application.

[0026] Figure Number:

[0027] 10. Box body; 20. Fan; 30. Filter; 40. Guide plate; 40a. Guide hole; 50. Connecting part; 60. Support block; 70. Air guide ring; 80. Ventilation frame; 80a. Ventilation mesh; 90. Differential pressure gauge; 100. Handle; 110. Lock; 120. Sealing strip. DETAILED DESCRIPTION

[0028] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings and are constructed and operated in specific directions. They are only for the convenience of describing the present technical solution and do not indicate that the devices or components referred to must have specific directions. Therefore, they should not be understood as limiting the present invention.

[0029] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium, and they can be internal connections between two elements or interactions between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "first", "second", and "third" are only used to facilitate the description of the present technical solution and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", and "third" can explicitly or implicitly include one or more of these features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present invention with unnecessary detail.

[0031] Please refer to Figures 1 to 5 The present application provides a fan 20 filter unit, which includes a housing 10, a fan 20 disposed within the housing 10, and a filter 30. The top and bottom of the housing 10 are respectively provided with an air inlet and an air outlet communicating with the interior thereof. The air inlet of the fan 20 faces the air inlet, and the filter 30 is located on one side of the air outlet of the fan 20 and is detachably connected to the inner wall of the housing 10. The fan 20 filter unit also includes a guide plate 40, which is provided with a lock 110. The bottom of the housing 10 is provided with a lock column that is compatible with the lock 110, so that the guide plate 40 can be detachably mounted at the air outlet. The guide plate 40 has a plurality of guide holes 40a arranged at intervals and communicating with the interior of the housing 10. The guide holes 40a are suitable for guiding the airflow to be blown out evenly.

[0032] Exemplarily, the filter 30 is a high efficiency filter 30 that can filter particles of 0.3 μm, but is not limited thereto. Other filters 30 in the prior art are also applicable to the present application.

[0033] For example, by providing a lock catch 110 on the deflector 40 and correspondingly providing a lock post at the bottom of the housing 10, the deflector 40 can be detachably connected to the housing 10 by means of the cooperation between the lock catch 110 and the lock post. When it is necessary to replace the filter 30 or inspect the fan 20, the lock catch 110 only needs to be opened to disengage the lock catch 110 from the lock post, and the deflector 40 can be removed from the housing 10, thereby opening the air outlet and allowing workers to quickly replace the filter 30 or quickly inspect the fan 20. In addition, it should be noted that the locking of the lock catch 110 with the lock post is common knowledge to those skilled in the art and will not be described in detail.

[0034] The fan 20 filter unit based on the above-mentioned technical features has an air outlet at the bottom of the housing 10, and utilizes the mutual cooperation of the lock 110 and the lock column to detachably connect the guide plate 40 to the housing 10, thereby sealing the air outlet. When replacing the filter 30 or repairing the fan 20, the guide plate 40 only needs to be removed from the housing 10 to open the air outlet, making disassembly and assembly simpler and faster, allowing for rapid repair or replacement. In addition, multiple guide holes 40a connected to the interior of the housing 10 are arranged at intervals on the guide plate 40, so that the gas filtered by the filter 30 can be evenly blown into the room through the guidance of the guide holes 40a, which can effectively avoid airflow turbulence and improve the uniformity of the air outlet speed.

[0035] In one possible embodiment, both inner walls of the box body 10 have connecting portions 50 extending along their inner sides, and an L-shaped support block 60 is connected to the connecting portion 50. The end of the filter 30 is overlapped on the support block 60 so that the filter 30 can be detachably arranged inside the box body 10.

[0036] For example, when installing the filter 30 inside the housing 10, the support portion is first connected to the connecting portion 50 on one side, and then one end of the filter 30 is overlapped on the support block 60. The filter 30 is then supported using auxiliary tools and fixedly connected to the supporting block 60 on the connecting portion 50 on the other side. Finally, the other end of the filter 30 is overlapped on the supporting block 60 and the auxiliary tools are removed. The filter 30 is thus installed, resulting in a simple structure and easy assembly and disassembly. For example, when the filter 30 needs to be replaced, the filter 30 can be quickly removed by simply removing the two supporting blocks 60 from the connecting portion 50.

[0037] In one possible embodiment, the connecting portion 50 has a first mounting hole, and the support block 60 has a second mounting hole vertically aligned with the first mounting hole. Specifically, after aligning the second mounting hole of the support block 60 with the first mounting hole of the connecting portion 50, a fastener (e.g., a bolt) is inserted sequentially through the second and first mounting holes to secure the support block 60 to the connecting portion 50. This allows the support block 60 to securely support the filter 30, resulting in a simple structure and easy assembly and disassembly.

[0038] In one possible embodiment, a stepped groove is formed on the outside of the air outlet, a locking post is fixed in the stepped groove, and a locking buckle 110 is provided on one side of the deflector plate 40 near the stepped groove. Thus, when securing the deflector plate 40 to the housing 10, the locking buckle 110 on one side of the deflector plate 40 is first locked with the locking post in the stepped groove, and then the other side of the deflector plate 40 is secured to the housing 10, thereby achieving a detachable connection between the deflector plate 40 and the housing 10, facilitating subsequent maintenance of the filter unit of the fan 20.

[0039] In one possible embodiment, a sealing strip 120 is further included. The sealing strip 120 is disposed along the four edges of the deflector plate 40 so that when the deflector plate 40 covers the air outlet, the sealing strip 120 abuts against the edge of the air outlet. Thus, the sealing strip 120 abuts against the edge of the air outlet to prevent gas within the box 10 from escaping through the gap between the deflector plate 40 and the box 10, thereby enhancing airtightness.

[0040] In one possible embodiment, an air guide ring 70 is further included. The air guide ring 70 has air guide cavities extending through both ends. One end of the air guide ring 70, located near the fan 20, extends into the air inlet and connects to the air inlet end of the fan 20, while the other end is exposed outside the air inlet. In other words, the provision of the air guide ring 70 can reduce resistance to air flow, better directing external air toward the air inlet end of the fan 20, thereby further accelerating the airflow and improving the air volume and efficiency of the centrifugal fan 20.

[0041] In a possible embodiment, a ventilation frame 80 is further included. The ventilation frame 80 is covered on the periphery of the air guide ring 70 and connected to the top of the box body 10. The ventilation frame 80 is provided with a ventilation mesh 80a at a position opposite to the air guide ring 70.

[0042] For example, the ventilation frame 80 can be detachably mounted on the top of the housing 10, allowing the ventilation frame 80 to be disassembled at any time for inspection or maintenance of the air guide ring 70 and the fan 20. For example, the outer edge of the ventilation frame 80 is bent to form a connecting edge, which is provided with a fixing hole. Fasteners (such as bolts) are then passed through the fixing holes and fixed to the housing 10, thereby achieving detachable installation of the ventilation frame 80 on the top of the housing 10. The above is merely an example and is not intended to be limiting.

[0043] In a possible implementation, the length of the guide plate 40 is greater than the length of the filter 30 , and the length of the area where the guide holes 40 a are provided on the guide plate 40 is equal to or greater than the length of the filter 30 .

[0044] For example, since the gas filtered by the filter 30 is blown into the room through the guide holes 40a of the guide plate 40, in order to ensure that the gas is blown out at a more uniform speed without turbulence, it is necessary to ensure that the length of the guide plate 40 is greater than the length of the filter 30, and the length of the area on the guide plate 40 where the guide holes 40a are provided is equal to or greater than the length of the filter 30, so that the gas flowing out of the filter 30 can be completely covered by the guide holes 40a, thereby achieving a more uniform wind speed. For example, if the area on the guide plate 40 where the guide holes 40a are provided is smaller than the length of the filter 30, some of the gas filtered by the filter 30 will be blocked by the guide plate 40 and flow upward, which will cause turbulence in the airflow and result in uneven wind speed of the gas blown into the room.

[0045] In one possible embodiment, a differential pressure gauge 90 is further included, and the differential pressure gauge 90 is embedded in the surface of the housing 10 and is used to detect the gas pressure inside the housing 10. In other words, the differential pressure gauge 90 embedded in the surface of the housing 10 is used to detect the gas pressure inside the housing 10, so that the resistance of the filter 30 can be deduced based on the real-time displayed gas pressure value, and the filtration efficiency of the filter 30 can be obtained, so as to determine whether the filter 30 needs to be replaced in time to ensure the filtration effect of the filter unit of the fan 20.

[0046] In a possible embodiment, a handle 100 is provided on the top of the box body 10. In this way, when installing the fan 20 filter unit, a worker can lift the box body 10 upward by holding the handle 100 and put it into the installation position for better installation.

[0047] It can be understood that the above embodiments only express the preferred implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. A fan filter unit, characterized in that: The invention comprises a box body, a fan and a filter arranged inside the box body, wherein the top and bottom of the box body are respectively provided with an air inlet and an air outlet connected to the interior thereof, the air inlet of the fan faces the air inlet, and the filter is located on one side of the air outlet of the fan and is detachably connected to the inner wall of the box body; The fan filter unit also includes a guide plate, which is provided with a lock buckle. The bottom of the box is provided with a lock column adapted to the lock buckle, so that the guide plate can be detachably installed at the air outlet. The guide plate is provided with a plurality of guide holes that are communicated with the interior of the box at intervals, and the guide holes are suitable for guiding the airflow to be blown out evenly.

2. The fan filter unit according to claim 1, characterized in that: Both inner walls of the box body have connecting parts extending along their inner sides, and the connecting parts are connected to L-shaped support blocks. The ends of the filter are overlapped on the support blocks so that the filter can be detachably arranged inside the box body.

3. The fan filter unit according to claim 2, characterized in that: A first mounting hole is formed on the connecting portion, and a second mounting hole adapted to the first mounting hole is formed on the supporting block along a vertical direction.

4. The fan filter unit according to claim 1, characterized in that: A stepped groove is formed on the outer side of the air outlet, the locking column is fixed in the stepped groove, and the locking buckle is arranged on a side of the guide plate close to the stepped groove.

5. The fan filter unit according to claim 1, characterized in that: It also includes a sealing strip, which is arranged on the four edges of the guide plate, so that when the guide plate covers the air outlet, the sealing strip abuts against the edge of the air outlet.

6. The fan filter unit according to claim 1, characterized in that: It also includes an air guide ring, which has an air guide cavity running through both ends of the air guide ring. One end of the air guide ring close to the fan extends into the air inlet and is connected to the air inlet end of the fan, and the other end is exposed outside the air inlet.

7. The fan filter unit according to claim 6, characterized in that: It also includes a ventilation frame, the ventilation frame cover is arranged on the periphery of the air guide ring and is connected to the top of the box body, and the ventilation frame is provided with ventilation mesh holes at a position corresponding to the air guide ring.

8. The fan filter unit according to claim 1, characterized in that: The length of the guide plate is greater than the length of the filter, and the length of the area where the guide holes are provided on the guide plate is equal to or greater than the length of the filter.

9. The fan filter unit according to claim 1, characterized in that: It also includes a differential pressure gauge, which is embedded in the surface of the box and is used to detect the gas pressure inside the box.

10. The fan filter unit according to claim 1, characterized in that: A handle is provided on the top of the box body.

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