CN113847674B

CN113847674B - Split type FFU filters fan

Info

Publication number: CN113847674B
Application number: CN202111240620.9A
Authority: CN
Inventors: 冀广胜; 张洪亮; 李航; 罗顶亮
Original assignee: Shanghai Songhua Air Conditioning Purifying Equipment Co ltd
Current assignee: Shanghai Songhua Air Conditioning Purifying Equipment Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-11-29
Anticipated expiration: 2041-10-25
Also published as: CN113847674A

Abstract

The application discloses split type FFU filter fan, it is including installing the box in the factory building wall and installing the filter on the factory building ceiling, the box top is uncovered setting, the thickness of box is less than wall thickness and one side and the laminating of wall body, be provided with centrifugal fan in the box, offer the air intake that is used for inhaling the interior air of factory building on the box, the box top is provided with the air pipe that is used for supplying air, air pipe's one end and the uncovered fixed connection of box top, air pipe's the other end and filter fixed connection, it inhales the sound cotton to be provided with first sound of inhaling on box and air pipe's the inner wall and inhale the sound cotton with the second, this application is through setting up centrifugal fan and filter components of a whole that can function independently, and inhale the cotton setting of sound with first sound cotton and second, can weaken the noise that fan filter unit produced at the operation in-process by a wide margin, it is good to have the noise reduction effect, supplementary characteristics of accuse temperature.

Description

Split type FFU filters fan

Technical Field

The application relates to the field of filter fans, in particular to a split type FFU filter fan.

Background

The fan filtering unit (FanFilterUnit) is a self-powered air supply filtering device, which comprises a fan, a pipeline and a filter, wherein the fan is usually installed at the top end of a plant together with the pipeline and the filter, sucks air from the top through the fan, and filters the air before being sent into the room so as to achieve the required air cleanliness in the plant.

In a factory building, classification such as 'hundred grade' and 'thousand grade' is carried out on air cleanliness, the dust particle number of which is required to be more than or equal to 0.5 mu m and is less than 1000/cubic foot for the thousand grade cleanliness, the requirement of the hundred grade cleanliness is higher and is required to be less than 100/cubic foot, and the requirement of the air cleanliness reaching the hundred grade is usually required in an electronic factory building, so a large number of fan filtering units are required to be installed on a factory building ceiling, but because a fan can generate noise in the operation process, the noise generated by the large number of fan filtering units is extremely large, the health of workers in the factory building is seriously influenced, and a part to be improved exists.

Disclosure of Invention

In order to reduce the noise that fan filter unit produced, this application provides a split type FFU filter fan.

The application provides a split type FFU filters fan adopts following technical scheme:

the utility model provides a split type FFU filter fan, is including installing the box in the factory building wall and installing the filter on factory building ceiling, the box top is uncovered setting, the thickness of box is less than wall body thickness and one side and the laminating of wall body, be provided with centrifugal fan in the box, offer the air intake that is used for inhaling air in the factory building on the box, the box top is provided with the air pipe that is used for the air supply, the uncovered fixed connection of air pipe's one end and box top, air pipe's the other end and filter fixed connection, it is cotton to all laminate first sound absorption on box and air pipe's the inner wall.

By adopting the technical scheme, the box body is arranged in the wall body, and the centrifugal fan is arranged in the box body, so that the centrifugal fan can be buried in the wall body, and the wall body and the box body can play a sound insulation effect; simultaneously, the first sound absorption cotton that box and air pipe inner wall set up can further absorb centrifugal fan at the noise that the operation in-process produced, the two all is favorable to reducing the noise that fan filter unit produced, when opening this filter fan, centrifugal fan operates, the inside extraction air of factory building is followed to the air intake, in the perpendicular inside air pipe that upwards sends into of factory building behind centrifugal fan's the rotation, the air reentrant factory building inside after the transportation of air pipe and the filtration of filter screen this moment, in order to reach the air cleanliness factor of factory building regulation.

Preferably, the air intake is provided with a plurality ofly, just the air intake is seted up respectively on the three side that the box was not laminated mutually with the factory building wall body, all fixedly on arbitrary air intake be provided with the air inlet filter screen.

Through adopting above-mentioned technical scheme, set up runner quantity when air gets into the box in the multiplicable factory building of air intake on the three side of box, runner length when can prolong the air admission box simultaneously, the setting of air inlet filter screen can carry out coarse filtration to the air, has played the guard action to centrifugal fan, prevents to breathe in the in-process centrifugal fan and inhales the bulk foreign matter and lead to centrifugal fan to damage.

Preferably, the centrifugal fan is provided with a silencing net, and the silencing net is detachably arranged at an air suction opening of the centrifugal fan.

By adopting the technical scheme, the noise generated when the centrifugal fan operates and sucks air can be further weakened by the arrangement of the silencing net.

Preferably, the box is internally and vertically provided with a mounting plate, the box is internally provided with a choke plate horizontally arranged at the lower side of the mounting plate, and the choke plate is arranged on the side wall of the box close to one side of the silencing net.

Through adopting above-mentioned technical scheme, through the mounting panel of vertical setting, can be vertical the installing in the box with centrifugal fan, owing to the setting of choke plate, can make the air receive the blockking of choke plate and mounting panel when getting into the box in the factory building again, form crooked air flow channel, the setting of choke plate and mounting panel can play the effect of the air admission volume that slows down to further weaken centrifugal fan at the noise that induced drafts the in-process and produce.

Preferably, air pipe is provided with the cowling panel with the open junction of box, the cowling panel is provided with a plurality ofly, arbitrary two the cowling panel all is parallel arrangement.

Through adopting above-mentioned technical scheme, because centrifugal fan is vertical setting, so its inlet scoop is the level setting, and this centrifugal fan's air supply direction perpendicular to inlet scoop's air inlet direction, the setting of cowling panel can be when centrifugal fan operation and carry out the air feed, carries out the rectification with the wind of seeing off, is favorable to improving the stability of the inside air wind field of box, reduces the distortion in wind field, has improved the air supply amount of wind and air supply efficiency.

Preferably, the air pipe is located the junction of factory building wall and ceiling and is formed with the corner, the corner is provided with a plurality of guide plates, all the guide plate is crooked setting and curvature center homogeneous phase.

By adopting the technical scheme, the guide plate is arranged at the corner, so that the impact of the air sent out by the centrifugal fan on the inner wall of the air pipeline can be reduced when the air passes through the corner, the air is guided, the stability of the air flow in the air pipeline is improved, the turbulent flow caused by the impact of the air flow on the inner wall of the air pipeline at the corner is reduced, and the air supply quantity and the air supply efficiency are further improved.

Preferably, all laminate on mounting panel, choke plate and the cowling panel and inhale the sound cotton with the second.

Through adopting above-mentioned technical scheme, inhale the cotton setting of sound through the second, be favorable to further improving the absorbing effect of mounting panel, choke plate and cowling panel to the noise, increased the inside noise reduction of box and air pipe.

Preferably, a plurality of dry coil pipes are arranged in the ventilation pipeline, and the dry coil pipes are arranged between the centrifugal fan and the rectifying plate at intervals.

Through adopting above-mentioned technical scheme, because there is vertical section in the in-process that air pipe and box and filter are connected, and filter fan is at the in-process to indoor return air, also can set up cold coil pipe and carry out moderate degree cooling to the return air, at the cooling in-process, vapor in the return air meets cold liquefaction can be followed cold coil pipe and dropped, there is the risk of damaging centrifugal fan, so set up dry coil pipe in air pipe, can realize the moderate degree cooling to the return air under the condition that does not condense, the temperature control effect of this filter fan to the factory building has further been improved.

Preferably, the box body is positioned on the same horizontal plane with the centrifugal fan and is detachably provided with an access door, and the access door is parallel to the mounting plate.

Through adopting above-mentioned technical scheme, the arrangement of access door can be convenient for maintenance personal regularly to inspect the operational aspect of centrifugal fan and air pipe, is favorable to this maintenance and the maintenance of filtering the fan.

In summary, the present application includes at least one of the following beneficial technical effects:

the centrifugal fan and the filter are arranged in a split mode, the centrifugal fan can be arranged in the wall body and connected through the ventilating duct, noise generated in the operation process of a part of the centrifugal fan can be blocked by means of the wall body, meanwhile, sound-absorbing cotton arranged in the box body and the ventilating duct can further absorb the noise generated in the operation process of the centrifugal fan, and the noise generated in the operation process of the fan filtering unit is reduced;

by means of the arrangement of the air inlet filter screen and the silencing screen, the air sucked in can be filtered twice when the centrifugal fan operates to suck air, a certain protection effect is achieved, and the condition that the centrifugal fan is damaged due to the fact that the centrifugal fan sucks large foreign matters in the air suction process is prevented;

through the setting of mounting panel, choke plate, cowling panel and guide plate, can increase on the one hand and inhale the cotton coverage area in box and air pipe, improve sound absorption effect, on the other hand can play the rectification effect to the wind that centrifugal fan sent out, is favorable to improving the air supply amount of wind and air supply efficiency.

Drawings

Fig. 1 is a first axial view of an embodiment of the present application, which mainly shows an overall structure of a split type FFU filter fan;

fig. 2 is a second axial view of an embodiment of the present application, which mainly shows an overall structure of a split type FFU filter fan;

FIG. 3 is a schematic cross-sectional view of the internal structure of the case according to the embodiment of the present application;

fig. 4 is a schematic cross-sectional view mainly showing the internal structure of a ventilation duct in the embodiment of the present application;

reference numerals: 1. a box body; 11. a centrifugal fan; 111. a sound deadening net; 12. an air inlet filter screen; 13. mounting a plate; 14. an access door; 15. a choke plate; 2. a filter; 3. a ventilation duct; 31. a rectifying plate; 32. a vertical section; 33. a horizontal segment; 34. a baffle; 35. a dry coiled pipe; 4. a first sound absorbing cotton; 5. the second sound-absorbing cotton.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses split type FFU filters fan.

Referring to fig. 1 and 2, a split type FFU filters fan is including installing box 1 in the factory building wall and installing filter 2 on the factory building ceiling, box 1 top is uncovered setting, be provided with air pipe 3 between box 1 and the filter 2, air pipe 3's one end and the uncovered formation grafting cooperation of box 1 top pass through bolt fixed connection, air pipe 3's the other end passes through bolt fixed connection with filter 2, be provided with centrifugal fan 11 in the box 1, centrifugal fan 11's inlet scoop is the level setting, and centrifugal fan 11's supply-air outlet is towards the uncovered of box 1 top, it has first sound cotton 4 of inhaling all through the laminating of sticky mode on box 1 and air pipe 3's the inner wall, the side and the wall laminating of box 1 that centrifugal fan 11's inlet scoop oriented, and the air intake has all been seted up to the bottom that box 1 is located the three side of wall laminating, all be fixed with air inlet filter screen 12 on the three air intake.

Install in box 1 through with centrifugal fan 11, and install box 1 in the wall body, can make its and the filter 2 separation on the ceiling, and realized centrifugal fan 11 and filter 2's split type design through air pipe 3, because box 1 is installed in the wall body, wall body and box 1 all can play syllable-dividing effect when centrifugal fan 11 operates, and simultaneously, the setting of first sound cotton 4 of inhaling can further absorb the noise that centrifugal fan 11 produced at the operation in-process, the two all is favorable to reducing the noise that fan filter unit produced at the operation in-process.

In the use, install box 1 back in the wall body, need set up the gas pocket of being convenient for air in the centrifugal fan 11 extraction factory building on the wall body of box 1 both sides, make the inside and the inside intercommunication of wall body of factory building, at this moment, runner quantity and runner length when setting up the air in the multiplicable factory building of three air intake is by suction box 1, the setting of air inlet filter screen 12 can carry out the coarse filtration to it when the air gets into box 1 via gas pocket on the wall body in the factory building, filter out the bold foreign matter, play the guard action to centrifugal fan 11, prevent that the condition that the in-process centrifugal fan 11 of breathing in inhales the foreign matter and damage from taking place.

Referring to fig. 3, a mounting plate 13 is vertically arranged inside the box body 1, the centrifugal fan 11 is fixed on one side, away from an air hole in a factory building wall, of the mounting plate 13 in a bolt or welding mode, a mounting hole is formed in the mounting plate 13 in a penetrating mode, a suction port of the centrifugal fan 11 is detachably connected with a silencing net 111 through a bolt, the silencing net 111 is arranged in a penetrating mode in the mounting hole, and noise generated when the centrifugal fan 11 operates and sucks air can be further weakened by the silencing net 111; all can dismantle through the knob on two lateral walls that are on a parallel with mounting panel 13 on box 1 and be provided with access door 14, and two access doors 14 all are located the same height of box 1 with centrifugal fan 11, and the staff of being convenient for is to filtering fan's maintenance and maintenance.

Referring to fig. 3, a choke plate 15 is horizontally and fixedly connected to the lower side of the mounting plate 13 inside the box 1 in a welding manner, the choke plate 15 is arranged on the side wall of the box 1 close to one side of the silencing net 111, and an air inlet gap is formed between the choke plate 15 and the mounting plate 13, when the centrifugal fan 11 operates to suck air, air in a factory building can be blocked by the choke plate 15 and the mounting plate 13 before entering the centrifugal fan 11 through the air inlet filter screen 12, so that a curved air flow channel is formed, the air inlet amount is reduced, and noise generated in the air suction process of the centrifugal fan 11 is further weakened.

Referring to fig. 3 and 4, the open junction of air pipe 3 and box 1 is through welded mode fixedly connected with cowling panel 31, cowling panel 31 is provided with a plurality ofly, in this embodiment, cowling panel 31 is provided with threely, and three cowling panel 31 all is perpendicular to mounting panel 13 and parallel to each other, cowling panel 31 can rectify the wind of centrifugal fan 11 seeing off, be favorable to reducing the distortion of centrifugal fan 11 air supply opening department wind field, centrifugal fan 11's air supply amount and air supply efficiency have been improved, and mounting panel 13, choke plate 15, and cowling panel 31 are last all to have the second to inhale sound cotton 5 through the laminating of sticky mode, be favorable to further increasing box 1 and the inside area of inhaling sound cotton of air pipe 3, and then improved mounting panel 13, choke plate 15 and cowling panel 31 are to the absorbing effect of noise.

Referring to fig. 4, ventilation duct 3 includes vertical section 32 and horizontal segment 33, be formed with the corner between vertical section 32 and the horizontal segment 33, the corner is provided with a plurality of guide plates 34, in this embodiment, guide plate 34 is provided with threely, three guide plate 34 all is the crooked setting, the inside to the outside of corner is followed in proper order increased to the area of three guide plate 34, and the centre of curvature of three guide plate 34 is all the same, guide plate 34 can play the guide effect to the wind that centrifugal blower sent out, be favorable to improving the stability of air current in ventilation duct 3, reduce the air current because the indiscriminate stream that the striking inner wall caused in ventilation duct 3 corner, the air supply amount and the air supply efficiency of centrifugal fan 11 have further been improved.

Referring to fig. 4, a plurality of dry coils 35 are fixed in the vertical section 32 of the ventilation duct 3 through bolts, the dry coils 35 can improve the functionality of the filter fan, cool the return air properly in the process of returning the air to the room, and can realize temperature control without dew condensation, so as to prevent the water vapor in the return air from falling to the centrifugal fan 11 when encountering cold liquid and causing damage, further improve the temperature control effect of the filter fan on the plant, and meanwhile, the temperature control mainly uses an air conditioning system additionally installed in the plant, and the air conditioning system needs to absorb outdoor fresh air to control the temperature inside the plant, the filter fan can undertake most of air exchange work in the plant, at the moment, the energy consumption of the air conditioning system can be reduced through the auxiliary temperature control of the dry coils 35, thereby achieving the purpose of reducing the production cost.

The implementation principle of split type FFU filter fan of the embodiment of the application is as follows: when starting centrifugal fan 11, centrifugal fan 11 operation and induced draft, inhale and send into air pipe 3 with the air in the factory building, after rectifier and guide plate 34's rectification and dry coil pipe 35's accuse temperature, finally send back indoor again through filter 2, through with centrifugal fan 11 and the split type setting of filter 2, and set up centrifugal fan 11 in the wall body, certain noise insulation has been played, again because the first sound cotton 4 and the second of inhaling that set up in box 1 and air pipe 3 inhale sound cotton 5, can further absorb the noise that centrifugal fan 11 produced at the operation in-process, the two all is favorable to reducing the noise that fan filter unit produced at the operation in-process.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a split type FFU filters fan which characterized in that: comprises a box body (1) arranged in the wall body of a factory building and a filter (2) arranged on the ceiling of the factory building;

the box body (1) is arranged in an open manner, the thickness of the box body (1) is smaller than that of the wall body, one side of the box body is attached to the wall body, a centrifugal fan (11) is arranged in the box body (1), and an air inlet for sucking air in a workshop is formed in the box body (1);

a ventilating duct (3) for air supply is arranged above the box body (1), one end of the ventilating duct (3) is fixedly connected with an opening above the box body (1), and the other end of the ventilating duct (3) is fixedly connected with the filter (2);

the inner walls of the box body (1) and the ventilation pipeline (3) are respectively adhered with first sound absorption cotton (4);

the air inlets are arranged on three sides of the box body (1) which are not attached to the wall of the plant, and an air inlet filter screen (12) is fixedly arranged on any one air inlet;

the centrifugal fan (11) is provided with a silencing net (111), and the silencing net (111) is detachably arranged at a suction opening of the centrifugal fan (11);

a mounting plate (13) is vertically arranged in the box body (1), a choke plate (15) is horizontally and fixedly arranged in the box body (1) and positioned on the lower side of the mounting plate (13), the choke plate (15) is arranged on the side wall of the box body (1) close to one side of the silencing net (111), an air inlet gap is formed between the choke plate (15) and the mounting plate (13), and the centrifugal fan (11) is fixed on one side, away from an air hole in a factory building wall, of the mounting plate (13) in a bolt or welding mode;

a plurality of rectifying plates (31) are arranged at the open connection part of the ventilating duct (3) and the box body (1), and any two rectifying plates (31) are arranged in parallel;

the mounting plate (13), the choke plate (15) and the rectifying plate (31) are respectively attached with second sound-absorbing cotton (5);

the ventilating duct (3) is positioned at the joint of a plant wall and a ceiling to form a corner, a plurality of guide plates (34) are arranged at the corner, and all the guide plates (34) are arranged in a bent manner and have the same curvature center;

a plurality of dry coil pipes (35) are arranged in the ventilation pipeline (3), and the dry coil pipes (35) are arranged between the centrifugal fan (11) and the rectifying plate (31) at intervals;

the box body (1) is positioned at the same horizontal plane with the centrifugal fan (11) and is detachably provided with an access door (14), and the access door (14) is parallel to the mounting plate (13).