CN111271870A - Fan filter unit with static pressure box - Google Patents
Fan filter unit with static pressure box Download PDFInfo
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- CN111271870A CN111271870A CN202010112741.4A CN202010112741A CN111271870A CN 111271870 A CN111271870 A CN 111271870A CN 202010112741 A CN202010112741 A CN 202010112741A CN 111271870 A CN111271870 A CN 111271870A
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- box body
- pressure box
- fan filter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention provides a fan filter unit with a static pressure box, belonging to the technical field of air filtering equipment; the static pressure box device comprises a static pressure box body, a mounting frame and a primary filter which are arranged in the static pressure box body, and a filter screen and a screen cleaning mechanism which are arranged on the mounting frame; the fan filter device comprises a filtering box body connected with the adapting pipe, a fixed frame arranged above the filtering box body, an installation cover covered on the fixed frame, a sealing assembly mechanism, a sealing fixing mechanism, a fan body arranged in the filtering box body and sequentially arranged along the wind direction flowing direction, a flow guide structure and a high-efficiency filter. The invention can effectively reduce the noise intensity while ensuring the ventilation quantity, the air outlet of the air outlet has uniform air flow, the combination of the static pressure box device and the fan filter device has the characteristics of high stability and tightness, and the mute effect of the fan filter unit in the operation process is ensured.
Description
Technical Field
The invention relates to the technical field of air filtering equipment, in particular to a fan filter unit with a static pressure box.
Background
In the ventilation system of building engineering and air conditioning engineering, the static pressure box is widely used, and the main effects are that the speed of air entering the static pressure box is obviously reduced, the wind noise is reduced, and the static pressure box converts the dynamic pressure of the air into static pressure, so that the wind is blown farther, and the air distribution is more uniform. The fan filter is also one of key equipment of the ventilation system, is an air supply filtering device with power, is called as FFU for short in English, and is a modular tail end air supply device with filtering efficacy; the main effect is that air is sucked through the top and filtered by HEPA, and the filtered clean air is uniformly delivered out at the speed of about 0.45m/s +/-20% on the whole air outlet surface.
Based on the respective advantages of the static pressure box and the fan filter, a novel industrial ventilation device assembled by using the advantages of the two types of ventilation equipment is available in the market. However, such ventilation devices are currently only simple mechanical combinations, with numerous drawbacks: 1. the stability and the sealing performance of an assembly structure between the static pressure box and the fan filter are poor, and the defects of air leakage, high vibration noise and the like caused by loosening are easy to occur; 2. when air passes through the static pressure box, dust is accumulated and attached to a filter screen on the static pressure box for a long time, so that dust cleaning operation is very inconvenient, the ventilation quantity is reduced, and noise is increased; 3. air enters the fan filter through the static pressure box, and noise is increased easily due to the structure.
Disclosure of Invention
In order to solve the technical problems, the invention provides a fan filter unit with a static pressure box, wherein the combination of the static pressure box and a fan filter has the characteristics of high stability and sealing performance, the static pressure box has an automatic dust cleaning function, the fan filter achieves the effect of reducing noise on the design of an air duct, the silencing effect in the operation process of the fan filter unit is ensured, and the phenomenon of noise caused by mechanical vibration and unreasonable structural design is prevented.
The invention provides the following technical scheme that the fan filter unit with the static pressure box comprises a static pressure box device and a fan filter device which are in a serial connection structure, wherein an air inlet of the fan filter device is communicated with an air outlet of the static pressure box device through a bearing pipe. The adapting pipe is additionally provided, so that the fan filter unit is suitable for being installed under different installation conditions.
Preferably, the static pressure box device comprises a static pressure box body, a mounting frame, a filter screen and a screen cleaning mechanism, wherein two ends of the static pressure box body are open, sound insulation materials are arranged on the inner wall of the static pressure box body, the mounting frame is arranged in the static pressure box body and is positioned at the air inlet, the filter screen and the screen cleaning mechanism are arranged on the mounting frame, and a primary filter is arranged in the static pressure box body and is positioned at the air outlet; fan filter device include with the adapter tube is connected and both ends are the filtration box of opening form, locate this filtration box top and be located fixed frame of air inlet department, cover the installation cover on this fixed frame, with this installation cover with adapter tube sealing connection's sealed assembly devices, general the installation cover with filtration box sealing connection's sealed fixed establishment with locate just fan body, water conservancy diversion structure and the high efficiency filter that set gradually along the wind direction flow direction in the rose box. This structure adopts clear setting up of net mechanism is convenient for carry out automatic clearance to adhering to dust on the filter screen and is realized falling the noise, the setting of installation cover makes the adapter with the stable and sealing connection of filtering the box realizes falling the noise, setting up of water conservancy diversion structure realizes falling the noise and the air-out is even, ensures the silence effect of this fan filter unit operation in-process.
Preferably, the mesh cleaning mechanism comprises two guide rails which are arranged in parallel at the inner side of the placement frame and arranged along the length direction of the placement frame, a scraping rod which is arranged between the two guide rails and slides along the two guide rails, a threaded cylinder which is arranged at the middle part of the scraping rod, a screw rod which is in threaded connection with the threaded cylinder, a motor which drives the screw rod to rotate and is arranged at the outer side of the placement frame, and a dust collection box which is movably arranged at the other side far away from the motor and below the placement frame; one side of the scraping rod is in contact with the filter screen, and the threaded cylinder is installed on the scraping rod far away from one side of the filter screen and is communicated along the length direction of the guide rail. This structural design is convenient for carry out automatic clearance to the dust that is in adhering to on the filter screen, ensures the air volume when improving the filter action, realizes the effect of making an uproar.
Preferably, the air inlet and the air outlet of the static pressure box body are both of a circular structure, the mounting frame is of a square structure, and the length of the scraping rod is larger than the diameter values of the air inlet and the air outlet of the static pressure box body. This structural design ensures that the air that gets into this fan filter unit is full filtered.
Preferably, a dovetail groove is formed in one side, far away from the filtering box body, of the mounting cover; the sealing assembly mechanism comprises a first spring arranged in the dovetail groove, a hook connected with the first spring and arranged in the dovetail groove in a sliding mode, a hook arranged on the adapting tube and connected with the hook and a sealing ring arranged at the joint of the installation cover and the adapting tube. The structural design prevents the bearing pipe from driving the first spring to move in the vertical direction under the action of external force.
Preferably, the sealing and fixing mechanism comprises a fixing plate which is arranged on the filtering box body and surrounds the fixing frame in the circumferential direction, a first angle steel and a slot which are arranged on the fixing plate, a sliding chute which is arranged on the fixing plate and is perpendicular to the slot, a second angle steel which is movably arranged on the fixing plate and is positioned on one side of the slot, which is far away from the fixing frame, a second spring which is arranged on the sliding chute, which is far away from the inner wall of the slot, and a sealing element which is arranged on the opposite inner wall of the slot; the slot supplies the installation cover is inserted and is established, first angle steel is located the slot is close to one side of fixed frame, first angle steel reaches the cooperation of second angle steel is with the centre gripping fixed frame. The structural design limits the movement of the bearing pipe in the vertical direction.
Preferably, the sealing element is a rubber pad, and the rubber pad and the mounting cover are inserted into the fixing plate to completely fill the slot. The structure prevents the air leakage at the joint of the mounting cover and the adapting pipe.
Preferably, the flow guide structure comprises a first flow guide plate and a second flow guide plate, the first flow guide plate and the second flow guide plate are respectively arranged on the inner side walls of the two filtering box bodies, the second flow guide plate is arranged in the middle of the inner cavity of the filtering box body, and the second flow guide plate is positioned below the fan body; the tail ends of the two first guide plates are arranged in an arc shape, the two ends of the second guide plate are tilted to form guide wings, and the arc-shaped tail ends of the two first guide plates and the guide wings at corresponding positions respectively form air guide openings. This structural design plays and guides the air current, makes the air-out homogeneity high when realizing making an uproar.
Preferably, the guide wing and the middle position of the second guide plate form an included angle, and the included angle ranges from 30 degrees to 45 degrees. The structural design has the function of reducing the noise in the air flow flowing process.
Preferably, the two first guide plates are respectively connected with the inner side wall of the filter box body, and one end of each first guide plate is in transition connection with the tail end of the corresponding first guide plate through a chamfer structure. The structure design strengthens the flow guiding function of the airflow.
Compared with the existing net pressure box and fan filter, the invention has the following advantages:
1. the static pressure box device and the fan filter device are connected in series through the adapting pipe, external air sequentially passes through the filter screen, the static pressure box body and the primary filter under the suction force of the fan body, then enters the filter box body and the flow guide structure through the adapting pipe, and finally is discharged through the high-efficiency filter. By additionally arranging the screen cleaning mechanism, dust on the filter screen can be automatically scraped without manual cleaning, so that the time and labor are saved, the filtering effect and the ventilation quantity of the fan filter unit are improved, and the scraped dust can be intensively treated; by additionally arranging the flow guide structure, the flow guide structure plays a role in guiding the air flow in the inner cavity of the fan filter unit, can effectively reduce the intensity of noise caused by the internal structure of the fan filter unit, and enables the air flow to be uniformly discharged; add through above-mentioned structure and make this fan filter unit can prevent that air intake department the jam condition appears in the filter screen, prevents to arouse the noise reinforcing condition because of its internal structure, can effectively reduce the intensity of noise when guaranteeing the air volume, and makes the air current air-out of air outlet even.
2. The installation cover, the seal assembly mechanism and the seal fixing mechanism are arranged; the sealing assembly mechanism can limit the movement of the bearing pipe in the vertical direction through the matching of the two groups of hooks and the shackle, so that the mounting cover can limit the movement of the bearing pipe in the horizontal direction, and the sealing ring can seal the joint of the mounting cover and the bearing pipe to prevent air leakage noise; the sealing and fixing mechanism is provided with a mounting cover, a first spring is arranged in the mounting cover, a second spring is arranged in the mounting cover, a sealing piece is arranged in the mounting cover, the sealing piece is matched with the first spring and tightly clamped with the second spring, and the sealing piece is arranged on the mounting cover. Through the structure, the static pressure box device and the fan filter device are combined to have the characteristics of high stability and high sealing performance, so that the mute effect of the fan filter unit in the operation process is ensured, and the phenomenon of noise caused by mechanical vibration is prevented.
Drawings
FIG. 1 is a schematic perspective view of a fan filter assembly with a plenum box according to the present invention;
FIG. 2 is a cross-sectional view of a fan filter assembly with a plenum box according to the present invention;
FIG. 3 is a partially enlarged view of FIG. 2 labeled B;
FIG. 4 is an enlarged view of a portion of FIG. 1 labeled A;
FIG. 5 is an enlarged partial view of FIG. 2 labeled C;
description of reference numerals: 10-a silent box device, 11-a static pressure box body, 12-a mounting frame, 121-a filter screen, 13-a screen cleaning device, 131-a guide rail, 132-a scraping rod, 133-a threaded cylinder, 134-a screw rod, 135-a motor, 136-a dust collecting box, 14-a primary filter, 20-a fan filter device, 21-a filter box body, 22-a fixing frame, 23-a mounting cover, 231-a dovetail groove, 24-a sealing assembly mechanism, 241-a first spring, 242-a hanging buckle, 243-a ring hook, 244-a sealing ring, 25-a sealing fixing mechanism, 251-a fixing plate, 252-a first angle steel, 253-a slot, 254-a chute, 255-a second angle steel, 256-a second spring, 257-a sealing piece, 26-a fan body, 27-a flow guide structure, 271-a first flow guide plate, 272-a second flow guide plate, 273-a flow guide wing, 274-a wind guide port, 28-a high-efficiency filter and 30-a collecting pipe.
Detailed Description
In order to make the object, technical solution and technical effect of the present invention more apparent, the present invention will be further described with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a fan filter unit with a static pressure box comprises a static pressure box device 10 and a fan filter device 20 which are connected in series; specifically, the air inlet of the fan filter device 20 is communicated with the air outlet of the static pressure box device 10 through a receiving pipe 30. In the specific installation process, under the limitation condition of the installation space, the structural design of the adapting pipe 30 enables the positional relationship between the static pressure box device 10 and the fan filter device 20 to be in a vertical, horizontal or front-back positional relationship and a communicated state, so that the positional relationship meets the requirement of the installation space, and the fan filter unit is suitable for being installed in different installation conditions. It should be noted that, for each component of the static pressure box device and the fan filter device, except for the component related to the present invention, other components are conventional components and are not described herein.
Referring to fig. 2, the static pressure box device 10 includes a static pressure box 11 with two open ends and a sound insulation material on the inner wall, a placement frame 12 disposed in the static pressure box and located at an air inlet, a filter screen 121 and a screen cleaning mechanism 13 disposed on the placement frame, and a primary filter 14 disposed in the static pressure box 11 and located at an air outlet. Further, the fan filter device 20 includes a filtering box 21 connected to the adapting pipe 30 and having two open ends, a fixing frame 22 disposed above the filtering box and located at the air inlet, an installation cover 23 covering the fixing frame, a sealing assembly mechanism 24 for connecting the installation cover to the adapting pipe 30 in a sealing manner, a sealing fixing mechanism 25 for connecting the installation cover 23 to the filtering box 21 in a sealing manner, and a fan body 26, a flow guiding structure 27 and a high efficiency filter 28 disposed in the filtering box 21 and sequentially arranged along the wind direction flowing direction. Specifically, the outside air passes through the filter screen 121, the static pressure box 11, and the primary filter 14 in sequence under the suction force of the blower body 26, then enters the filter box 21 and the flow guide structure 27 through the receiving pipe 30, and finally is discharged through the high efficiency filter 28. According to the invention, through the arrangement of the net cleaning mechanism 13, the flow guide structure 27, the sealing assembly mechanism 24 and the sealing fixing mechanism 25, dust attached to the filter screen 121 can be automatically cleaned conveniently to realize noise reduction, noise reduction and air outlet uniformity are realized to ensure the silencing effect in the process of travelling, and the purpose of noise reduction is realized through stable and sealed connection of the bearing pipe 30 and the filter box body 21, so that the filtering function and the ventilation quantity of the fan filter unit are ensured, the silencing effect is enhanced, and the stability and the sealing performance of the combination of the static pressure box device 10 and the fan filter device 20 are improved.
Referring to fig. 3, the screen cleaning mechanism 13 includes two guide rails 131 disposed in parallel inside the placement frame 12 and along the length direction thereof, a scraping bar 132 disposed between the two guide rails and sliding along the two guide rails, a threaded cylinder 133 disposed in the middle of the scraping bar, a screw 134 in threaded connection with the threaded cylinder, a motor 135 driving the screw to rotate and disposed outside the placement frame 12, and a dust collecting box 136 movably disposed on the other side away from the book searching motor 135 and below the placement frame 12. Specifically, one side of the scraping rod 132 contacts the filter screen 121, and the screw cylinder 133 is mounted on the scraping rod 132 away from the filter screen 121 and penetrates the guide rail 131 in the longitudinal direction. In a specific operation process, air enters the static pressure box body 11 through the filter screen 121, and the filter screen 121 filters dust in the air; by additionally arranging the net cleaning mechanism 13, the motor 135 is connected with the screw 134 through a coupler, the screw 134 is driven by the motor 135 to rotate, the scraping rod 132 is driven to slide along the guide rail 131 in a reciprocating manner, so that the scraping rod 132 scrapes off dust on the filter screen 121, the filtering effect of the filter screen 121 is improved, the ventilation volume is ensured, and the noise caused by dust gathering on the filter screen 121 is avoided; the scraped dust falls into the dust collecting box 136 and is collected, and the user can periodically draw out the dust collecting box 136 to process the dust therein.
Further, in order to ensure complete filtration of the air entering the fan filter unit, the length of the scraping rod 132 may be greater than the diameter of the air inlet and the air outlet of the static pressure box 11. In this embodiment, the air inlet and the air outlet of the static pressure box 11 are both circular structures, and the mounting frame 12 is a square structure, so that the purpose of completely filtering air can be achieved according to the design requirements.
Referring to fig. 4, a dovetail groove 231 is formed on one side of the mounting cover 23 away from the filter box 21; the seal assembly mechanism 24 includes a first spring 241 disposed in the dovetail groove 231, a hook 242 connected to the first spring and slidably disposed in the dovetail groove 231, a ring hook 243 disposed on the socket 30 and fastened to the hook 242, and a seal ring 244 disposed at a joint of the mounting cover 23 and the socket 30. In this embodiment, the two sets of hanging hooks 242 and the ring hooks 243 are matched to prevent the adapting pipe 30 from falling off, the mounting cover 23 is firmly connected with the adapting pipe 30, and the sealing ring 244 can seal the joint of the mounting cover 23 and the adapting pipe 30, so that the adapting pipe 30 and the mounting cover 23 are firmly combined to achieve a technical effect of strong sealing, and noise caused by mechanical looseness and air leakage is prevented.
Referring to fig. 5, the sealing and fixing mechanism 25 includes a fixing plate 251 disposed on the filter box 11 and surrounding the fixing frame 22, a first angle 252 and a slot 253 disposed on the fixing plate, a sliding groove 254 disposed on the fixing plate 251 and perpendicular to the slot 253, a second angle 255 movably disposed on the fixing plate 251 and located on one side of the slot 253 away from the fixing frame 22, a second spring 256 disposed on an inner wall of the sliding groove 254 away from the slot 253, and a sealing member 257 disposed on an opposite inner wall of the slot 253; the slot 253 is used for inserting the mounting cover 23, the first angle steel 252 is located at one side of the slot 253 close to the fixing frame 22, and the first angle steel 252 and the second angle steel 255 are matched to clamp the fixing frame 22. In this embodiment, the slot 253 is used for inserting the mounting cover 23 to perform preliminary fixing on the mounting cover 23, and after the second angle iron 255 is tightly pressed against the mounting cover 23 under the action of the second spring 256, the mounting cover 23 can be clamped and fixed by the cooperation of the first angle iron 252 and the second angle iron 253.
Further, the sealing member 257 is a rubber pad, and the rubber pad and the mounting cover 23 are inserted into the fixing plate 251 to completely fill the insertion groove 253. When the mounting cover 23 is inserted into the sliding groove 254, the rubber pad and the mounting cover 23 completely fill the insertion groove 253, thereby performing a sealing function.
Referring to fig. 2, the flow guiding structure 27 includes a first flow guiding plate 271 disposed on the inner side walls of the two filter boxes 21 and a second flow guiding plate 272 disposed in the middle of the inner cavity of the filter boxes 21, and the second flow guiding plate 272 is located below the fan body 26; the ends of the two first guide plates 271 are arranged in an arc shape, two ends of the second guide plate 272 tilt to form guide wings 273, and the arc-shaped ends of the two first guide plates 271 and the guide wings 273 at corresponding positions form air guide openings 274 respectively. Preferably, the guide wing 273 forms an included angle with the middle position of the second guide plate 272, and the included angle ranges from 30 ° to 45 °. The structural design is mainly to construct an optimal air guide flow channel by calculating the arc-shaped structures of the two first guide plates 271 between the filter box body 21 and the second guide plate 272 of the fan filter device 20, so that the noise is effectively reduced, and the air outlet uniformity of the fan filter unit is ensured.
Further, in order to reduce the noise generated by the airflow flowing and the filtering box 21, in this embodiment, the first flow guiding plates 271 are respectively connected to the inner side wall of the filtering box 21 by a chamfer and are transitionally connected to the end of the first flow guiding plate by an arc structure.
The working principle of the invention is as follows: under the suction force of the fan body 26, the outside air firstly enters the static pressure box body 11 through the filter screen 121, large-particle dust in the air is filtered by the filter screen 121 and is left on the filter screen 121, the motor 135 is connected with the screw 134 through a coupling, the screw 134 is rotated under the driving of the motor 135, the scraping rod 132 is driven to slide back and forth along the guide rail 131 to scrape off the dust on the filter screen 121, and the scraped dust falls into the dust collection box 136 for collection; the air filtered by the filter screen 121 enters the static pressure box 11, is filtered again by the primary filter 14 and then enters the filter box 21 through the receiving pipe 30, and the flowing air is guided by the flow guide structure 27 constructed by the first flow guide plate 271 and the second flow guide plate 272, so that the air flow is uniformly discharged into a clean workshop through the high efficiency filter 28, and the filter unit is ensured to provide continuous large air volume and clean air and is always in a low noise or even mute state in the operation process.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the present invention pertains, the architecture form can be flexible and varied without departing from the concept of the present invention, and a series of products can be derived. But rather a number of simple derivations or substitutions are made which are to be considered as falling within the scope of the invention as defined by the appended claims.
Claims (9)
1. A fan filter unit with a static pressure box comprises a static pressure box device and a fan filter device which are in a serial connection structure, wherein an air inlet of the fan filter device is communicated with an air outlet of the static pressure box device through a carrying pipe; the method is characterized in that: the static pressure box device comprises a static pressure box body, a mounting frame, a filter screen, a screen cleaning mechanism and a primary filter, wherein two ends of the static pressure box body are open, sound insulation materials are arranged on the inner wall of the static pressure box body, the mounting frame is arranged in the static pressure box body and is positioned at an air inlet, the filter screen and the screen cleaning mechanism are arranged on the mounting frame, and the primary filter is arranged in the static pressure box body and is positioned at; fan filter device include with the adapter tube is connected and both ends are the filtration box of opening form, locate this filtration box top and be located fixed frame of air inlet department, cover the installation cover on this fixed frame, with this installation cover with adapter tube sealing connection's sealed assembly devices, general the installation cover with filtration box sealing connection's sealed fixed establishment with locate just fan body, water conservancy diversion structure and the high efficiency filter that set gradually along the wind direction flow direction in the rose box.
2. A fan filter assembly with plenum box as defined in claim 1 wherein: the net cleaning mechanism comprises two guide rails which are arranged in parallel on the inner side of the placement frame and arranged along the length direction of the placement frame, a scraping rod which is arranged between the two guide rails and slides along the guide rails, a threaded cylinder which is arranged in the middle of the scraping rod, a screw rod which is in threaded connection with the threaded cylinder, a motor which drives the screw rod to rotate and is arranged on the outer side of the placement frame, and a dust collecting box which is movably arranged below the placement frame on the other side away from the motor; one side of the scraping rod is in contact with the filter screen, and the threaded cylinder is installed on the scraping rod far away from one side of the filter screen and is communicated along the length direction of the guide rail.
3. A fan filter assembly with plenum box as set forth in claim 2, wherein: the air inlet and the air outlet of the static pressure box body are both of a circular structure, the mounting frame is of a square structure, and the length of the scraping rod is larger than the diameter values of the air inlet and the air outlet of the static pressure box body.
4. A fan filter assembly with plenum box as defined in claim 1 wherein: a dovetail groove is formed in one side, far away from the filtering box body, of the mounting cover; the sealing assembly mechanism comprises a first spring arranged in the dovetail groove, a hook connected with the first spring and arranged in the dovetail groove in a sliding mode, a hook arranged on the adapting tube and connected with the hook and a sealing ring arranged at the joint of the installation cover and the adapting tube.
5. A fan filter assembly with plenum box as defined in claim 1 wherein: the sealing and fixing mechanism comprises a fixing plate, a first angle steel, a slot, a sliding groove, a second angle steel, a second spring and a sealing element, wherein the fixing plate is arranged on the filtering box body and surrounds the fixing frame in the circumferential direction; the slot supplies the installation cover is inserted and is established, first angle steel is located the slot is close to one side of fixed frame, first angle steel reaches the cooperation of second angle steel is with the centre gripping fixed frame.
6. The fan filter assembly with plenum box of claim 5, wherein: the sealing element is a rubber pad, and the rubber pad and the installation cover are inserted into the fixed plate to completely fill the slot.
7. A fan filter assembly with plenum box as defined in claim 1 wherein: the flow guide structure comprises a first flow guide plate and a second flow guide plate, the first flow guide plate and the second flow guide plate are respectively arranged on the inner side walls of the two filtering box bodies, the second flow guide plate is arranged in the middle of the inner cavity of the filtering box body, and the second flow guide plate is positioned below the fan body; the tail ends of the two first guide plates are arranged in an arc shape, the two ends of the second guide plate are tilted to form guide wings, and the arc-shaped tail ends of the two first guide plates and the guide wings at corresponding positions respectively form air guide openings.
8. The fan filter assembly with plenum box of claim 7, wherein: the guide wing and the middle position of the second guide plate form an included angle which ranges from 30 degrees to 45 degrees.
9. The fan filter assembly with plenum box of claim 7, wherein: and the first guide plates are respectively in transition connection with the end, connected with the inner side wall of the filter box body, of the circular arc structure at the tail end of the filter box body by adopting a chamfer structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010112741.4A CN111271870A (en) | 2020-02-24 | 2020-02-24 | Fan filter unit with static pressure box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010112741.4A CN111271870A (en) | 2020-02-24 | 2020-02-24 | Fan filter unit with static pressure box |
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| CN111271870A true CN111271870A (en) | 2020-06-12 |
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| CN202010112741.4A Pending CN111271870A (en) | 2020-02-24 | 2020-02-24 | Fan filter unit with static pressure box |
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| CN208966729U (en) * | 2018-10-24 | 2019-06-11 | 广东明锐建设有限公司 | A kind of fan filter |
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2020
- 2020-02-24 CN CN202010112741.4A patent/CN111271870A/en active Pending
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| EP0768498A2 (en) * | 1995-10-13 | 1997-04-16 | JENOPTIK Aktiengesellschaft | Device for producing a clean and poor in turbulences air current, for supplying local clean-rooms |
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| CN207006499U (en) * | 2017-03-03 | 2018-02-13 | 深圳市洪涛装饰股份有限公司 | A kind of air-conditioning plenum box with filter |
| CN208108432U (en) * | 2018-04-09 | 2018-11-16 | 深圳市旷世伟业工程有限公司 | A kind of air hose of central air-conditioning and the mounting structure of plenum chamber |
| CN208966729U (en) * | 2018-10-24 | 2019-06-11 | 广东明锐建设有限公司 | A kind of fan filter |
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Application publication date: 20200612 |
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