CN116164412A

CN116164412A - Low-noise rotational flow air duct structure and fan filter unit

Info

Publication number: CN116164412A
Application number: CN202310302448.8A
Authority: CN
Inventors: 叶伟强; 陈玲; 焦烨; 范朝俊; 刘宏武
Original assignee: Meier China Environmental Technology Co ltd
Current assignee: Meier China Environmental Technology Co ltd
Priority date: 2022-09-06
Filing date: 2023-03-27
Publication date: 2023-05-26
Also published as: WO2024051177A1; CN219510995U; DE212023000131U1

Abstract

The invention discloses a low-noise rotational flow air duct structure and a fan filter unit, wherein the air duct structure comprises a bottom plate and four outer side baffles, the four outer side baffles are arranged along the edge of the bottom plate, the adjacent two outer side baffles are arranged at intervals from head to tail to form air outlets, the tail parts of the baffles in the adjacent two outer side baffles exceed the head parts of the baffles, and meanwhile, the head end and the tail end of each outer side baffle are of arc structures, and air flows blown out from all the air outlets form rotational flow structures; the fan filter unit comprises a box body, a flow channel module and a fan module which are positioned in the box body, and a filter positioned below the box body. The ultra-low sound performance of the invention can meet the requirement of customers on ultra-silence in the market, is more convenient to install, fully meets the market requirement, and is worth popularizing.

Description

Low-noise rotational flow air duct structure and fan filter unit

Technical Field

The invention relates to a low-noise rotational flow air duct structure and a fan filter unit, and belongs to the technical field of air purification.

Background

The air supply filter device is a terminal air supply device with self-powered and filtering effects, can suck air from a top plate of the terminal air supply device, and can uniformly send clean air out after the air is filtered by a filter, so that air purification is realized.

At present, the existing filter unit with a fan has the following problems: (1) In the existing filter unit, more vortex is caused by a flow guiding structure in a box body, and operation noise is high; (2) The included angle between the air flow direction and the side face of the box body is larger, so that the running noise is higher; (3) The existing detachable fan filter unit with the fan is characterized in that a detachable fan module does not contain a controller, and when the fan module is detached, a connecting wire between the fan and the controller is disconnected, so that the operation is inconvenient; (4) The existing filter unit is free of support when combined installation is realized with the lower-mounted keel, so that the bottom filter is inconvenient to install.

Disclosure of Invention

The invention aims to provide a low-noise rotational flow air duct structure and a fan filter unit, so as to overcome the defects in the prior art.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

in one aspect, the invention provides a low-noise rotational flow air duct structure, which comprises a bottom plate and four outer side baffles, wherein the four outer side baffles are arranged along the edge of the bottom plate, the adjacent two outer side baffles are arranged at intervals from head to tail to form air outlets, the tail parts of the baffles in the adjacent two outer side baffles exceed the head parts of the baffles, and meanwhile, the head end and the tail end of each outer side baffle are of arc structures, airflow blown out from each air outlet forms a rotational flow structure, and the flow direction of the air outlet of each air outlet is tangential to the inner wall of a box body.

Further, the arc length of the overlapping part of the tail part of the baffle and the head part of the baffle in the two adjacent outer baffles is 10-250mm, preferably 180mm.

Furthermore, the upper surface of the bottom plate and the inner walls of the four outer side baffles are respectively provided with silencing cotton.

Further, the head of the outer baffle is of a curved surface structure which is turned outwards.

On the other hand, the invention also provides a low-noise fan filter unit, which comprises a box body, a flow channel module and a fan which are positioned in the box body, and a filter positioned below the box body, wherein the flow channel module adopts the low-noise cyclone air duct structure in the scheme, the fan is arranged at the center of a bottom plate of the flow channel module, a safety cover is arranged on the box body above the fan, and an air guide ring is arranged on the safety cover.

Further, the runner module is fixed on the fixed plate, and two ends of the fixed plate are fixed on the inner wall of the box body.

Furthermore, silencing cotton is arranged on the inner walls around the box body; a controller is arranged above the box body.

In still another aspect, the invention further provides a low-noise fan filter unit, which comprises a box body, a flow channel module and a fan module which are positioned in the box body, and a filter positioned below the box body, wherein the flow channel module adopts the low-noise cyclone air duct structure in the scheme, a controller is installed on a top plate of the fan module, the controller and the fan module form an integrated structure, and the controller and the fan module are integrally and detachably installed at the upper end of the box body.

Furthermore, the inner walls around the box body are provided with silencing cotton.

Further, a lower mounting rod is arranged in the box body, and the outer side end part of the lower mounting rod can stretch and retract to penetrate through two side walls of the box body.

Furthermore, the lower mounting rod stretches out and contracts through the rotating wheel arranged in the middle.

Further, the lower mounting rod is positioned below the flow channel module and above the filter.

The beneficial effects of the invention are as follows:

(1) The flow channel module is in a cyclone air channel structure, and the outer baffle at the air outlet of the flow channel module is in an arc-shaped structure, so that the flow direction of internal air flow is improved, and the noise is reduced;

(2) The front and back ends of the air duct plates are connected end to end, the air outlet flow direction is tangential to the inner wall of the box body, internal vortex is reduced, and noise is effectively reduced;

(3) The noise-reducing cotton is added in the interior, and the noise condition is further improved by matching with the internal noise-reducing cotton;

(4) The detachable fan module and the controller are integrated, and a connecting wire between the fan and the controller is not required to be disconnected when the fan is detached, so that the operation is convenient;

(5) The lower mounting rod is skillfully arranged, so that the bearing width of the box body is changed; the bottom filter and the whole unit can be conveniently installed by being matched with the lower-mounted keel.

In summary, the invention provides a cyclone air duct, a filter unit with a fan and a filter unit with a fan, wherein the filter unit can be independently assembled and disassembled with a fan control module and is provided with a lower mounting rod, the ultra-low performance of the filter unit meets the requirement of customers on ultra-silence in the market, and the independently assembled and disassembled fan filter unit also provides wider choice and possibility for later-stage reconstruction of replacing fans and controllers, is more convenient to install, fully meets the market requirement and is worthy of popularization.

Drawings

FIG. 1 is a schematic diagram of a cyclone duct structure according to a first embodiment;

FIG. 2 is a schematic airflow direction diagram of a cyclone duct structure according to the first embodiment;

FIG. 3 is a flow simulation diagram of a cyclone duct structure according to the first embodiment;

FIG. 4 is a schematic diagram of a low noise fan filter unit according to a second embodiment;

FIG. 5 is a schematic view of the internal installation structure of a low noise fan filter unit according to the second embodiment;

FIG. 6 is a schematic diagram of a low noise fan filter unit according to the third embodiment;

FIG. 7 is a telescopic schematic view of the lower mounting rod of the low noise blower filter assembly of the third embodiment; wherein (A) is an extension state diagram and (B) is a contraction state diagram;

FIG. 8 is a schematic diagram of a step one of the installation of the low noise blower filter assembly of the third embodiment;

FIG. 9 is a second schematic diagram of the installation step of the low noise blower filter assembly of the third embodiment;

fig. 10 is a schematic diagram of a third step of installing a low noise fan filter unit according to the third embodiment.

Marked in the figure as: 1-box, 1.1-mounting nut, 1.2-handle, 2-fan module, 2.1-fan mounting base, 2.2-connecting piece, 2.3-fan, 2.4-controller, 2.5-safety cover, 2.6-wind guiding circle, 3-filter, 4-runner module, 4.1-bottom plate, 4.2-outside baffle, 5-amortization cotton, 6-lower loading rod, 7-mounting bolt, 8-runner, 9-fossil fragments, 10-movable vane, 11-fixed plate.

Detailed Description

The invention will now be described in detail with reference to the drawings and specific examples.

Example 1

As shown in fig. 1 to 3, a low noise rotational flow air duct structure, the air duct structure includes a bottom plate 4.1 and four outer side baffles 4.2, the four outer side baffles 4.2 are arranged along the edge of the bottom plate 4.1, the adjacent two outer side baffles 4.2 are arranged at intervals to form air outlets, the tail parts of the baffles in the adjacent two outer side baffles 4.2 exceed the head parts of the baffles, and simultaneously, the two ends of the head and the tail of each outer side baffle 4.2 are arc structures, airflow blown out from each air outlet forms a rotational flow structure, and the air outlet flow direction of each air outlet is tangential to the inner wall of the box body.

In this embodiment, the swirl structure formed by the air flow refers to an integral air flow structure formed by the air flows blown out from the four air outlets; the air outlet flow direction of each air outlet is tangential to the inner wall of the box body, namely, the air flow blown out by each air outlet is tangential to the inner wall of the box body through the position adjustment setting of the air outlet.

In this embodiment, the arc length of the overlapping part of the tail part of the baffle and the head part of the baffle in two adjacent outer baffles is 10-250mm, and 180mm is generally preferred.

In this embodiment, the upper surface of the bottom plate 4.1 and the inner walls of the four outer side baffles 4.2 are provided with noise-reducing cotton 5.

In this embodiment, the top of the outer baffle 4.2 is a curved surface structure that is turned outwards.

Example two

As shown in fig. 4 and 5, a low noise fan filter unit includes a box 1, a flow channel module 4 and a fan 2.3 located in the box 1, and a filter 3 located below the box 1, where the flow channel module 4 adopts the low noise cyclone duct structure described in embodiment one, the fan 2.3 is installed at the center of a bottom plate 4.1 of the flow channel module, a safety cover 2.5 is installed on the box 1 above the fan 2.3, and a wind guiding ring 2.6 is provided on the safety cover 2.5.

In this embodiment, the flow channel module 4 is fixed on the fixing plate 11, and two ends of the fixing plate 11 are fixed on the inner wall of the case 1.

In this embodiment, the inner walls around the case 1 are provided with silencing cotton 5; a controller 2.4 is arranged above the box body 1.

Example III

As shown in fig. 6 to 10, a low noise fan filter unit includes a rectangular box-shaped case 1, a flow path module 4 and a fan module 2 located in the case 1, and a filter 3 located under the case 1; the top plate of the fan module 2 is provided with a controller 2.4, the controller 2.4 and the fan module 2 form an integrated structure, an air channel of the flow channel module 4 is of a rotational flow air channel structure, an outer baffle 4.2 at an air outlet of the air channel is of an arc-shaped structure, a lower mounting rod 6 is arranged in the box body, and the outer end part of the lower mounting rod 6 can stretch and retract to penetrate through two side walls of the box body 1.

In this embodiment, the top plate of the fan module 2 may be a flat plate structure or may be configured as a cover structure as in the second embodiment, and the controller 2.4 may be mounted at any position of the top plate, including the top surface or the side surface.

In this embodiment, the controller 2.4 and the fan module 2 are integrally and detachably mounted at the upper end of the box 1. The fan module 2 mainly comprises a top plate, a fan installation base 2.1, a fan 2.3 and an air inlet ring, wherein the top plate and the fan installation base 2.1 are fixed by a connecting piece 2.2 to form a fan control module whole; and the top plate is fixed on the top of the box body 1 through a mounting nut and a bolt.

In this embodiment, the flow channel module 4 includes a bottom plate 4.1 and four outer side baffles 4.2, the four outer side baffles 4.2 are disposed along the edge of the bottom plate 4.1, the adjacent two outer side baffles 4.2 are disposed at intervals from head to tail to form an air outlet, and the head and tail ends of each outer side baffle 4.2 are in arc structures; the air outlet flow direction of the air outlet of the installed flow channel module is tangential to the inner wall of the box body 1. By the structure, the flow direction of the internal air flow can be improved, so that noise is reduced;

in this embodiment, the upper surface of the bottom plate 4.1 and the inner walls of the four outer side baffles 4.2 are respectively provided with silencing cotton 5, and the inner walls around the box body 1 are provided with silencing cotton 5. Thus, the noise condition can be further improved by matching with the internal noise reduction cotton 5.

As shown in fig. 7, the lower mounting rod 6 is extended and contracted by a rotating wheel 8 arranged in the middle, so that the bearing width of the box body is changed. When the lower mounting rods 6 at the two ends of the rotating wheel 8 are positioned on the same straight line, the two end parts of the lower mounting rods 6 extend out of the box body 1, and when the lower mounting rods 6 at the two ends of the rotating wheel 8 are staggered and not positioned on the same straight line, the two ends of the lower mounting rods 6 retract into the box body 1.

As shown in fig. 8-10, the rotating wheel rotates anticlockwise or clockwise to drive the connecting rod to shrink or stretch, and the fan filter unit is mounted at the bottom of the keel in cooperation with the lower-mounted keel. The installation steps are as follows:

step one: the lower mounting rod 6 is in a contracted state, and the FFU box body is upwards moved from the lower part of the keel 9;

step two: when the lower mounting rod 6 reaches the position of the keel 9, the runner is rotated to enable the lower mounting rod 6 to extend out, and at the moment, the weight of the FFU box body is borne on the keel through the lower mounting rod 6;

step three: the filter 3 is moved up from below against the cabinet and movable flaps 10 are mounted and finally carry the FFU cabinet and the filter 3.

Through experiments, the unit noise of the embodiment can be obviously improved, and the test results are as follows:

test parameters: and the filter is not arranged at the position 1M below the air outlet surface under 2100CMH air quantity.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by equivalent substitution and the like fall within the scope of the present invention. The invention is not related in part to the same as or can be practiced with the prior art.

Claims

1. The utility model provides a low noise whirl wind channel structure, its characterized in that, wind channel structure includes bottom plate and four outside baffles, and four outside baffles set up along the bottom plate edge, and adjacent two outside baffles head and tail interval sets up and constitutes the air outlet to the afterbody of baffle exceeds the head of baffle in two adjacent outside baffles, and the both ends of head and tail of every outside baffle all are arc structure simultaneously, and the air current that blows out from each air outlet forms the whirl structure, and the air-out flow direction of every air outlet is tangent with the inner wall of box.

2. The low-noise cyclone air duct structure according to claim 1, wherein the arc length of the overlapping part of the tail part of the baffle and the head part of the baffle in the two adjacent outer baffles is 10-250mm.

3. The low-noise cyclone air duct structure according to claim 1, wherein noise-reducing cotton is disposed on the upper surface of the bottom plate and on the inner walls of the four outer side baffles.

4. The low noise cyclone duct structure of claim 1, wherein the header portion of the outer baffle is an outwardly turned curved surface structure.

5. The utility model provides a low noise fan filter unit, includes box, runner module and the fan that is located the box and the filter that is located the box below, its characterized in that, runner module adopts the low noise whirl wind channel structure of any one of preceding claims 1 to 4, the fan is installed in the bottom plate center department of runner module, installs the safety cover on the box of fan top, be equipped with the wind-guiding circle on the safety cover.

6. The low noise fan filter assembly of claim 5, wherein the flow channel module is fixed to a fixed plate, and both ends of the fixed plate are fixed to the inner wall of the case.

7. The low noise fan filter unit of claim 5, wherein noise-reducing cotton is disposed on the inner walls of the periphery of the box; a controller is arranged above the box body.

8. The utility model provides a low noise fan filter unit, includes the box, is located the runner module and the fan module of box and is located the filter of box below, its characterized in that, the runner module adopts the low noise whirl wind channel structure of any one of preceding claim 1 to 4, install the controller on the roof of fan module, the integrated structure is formed to the controller and the fan module, the whole demountable installation in the box upper end together with the fan module.

9. The ultra-low noise fan filter unit of claim 8, wherein noise-reducing cotton is disposed on the inner walls of the periphery of the housing.

10. The ultra-low noise fan filter unit of claim 8, wherein a lower mounting rod is mounted in the housing, and an outer end of the lower mounting rod is telescopically inserted through both sidewalls of the housing.

11. The ultra-low noise fan filter unit of claim 10, wherein the lower mounting bar is extended and retracted by a rotating wheel provided at the middle portion.

12. The ultra-low noise fan filter unit of claim 10, wherein said lower mounting bar is positioned below the flow channel module and above the filter.