CN210068574U - Air inlet rectification baffle plate of fan - Google Patents
Air inlet rectification baffle plate of fan Download PDFInfo
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- CN210068574U CN210068574U CN201920889267.9U CN201920889267U CN210068574U CN 210068574 U CN210068574 U CN 210068574U CN 201920889267 U CN201920889267 U CN 201920889267U CN 210068574 U CN210068574 U CN 210068574U
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- air inlet
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Abstract
The utility model discloses a fan air inlet rectification baffle belongs to air treatment plant technical field. The method comprises the following steps: the box, fan and rectification baffle set up in the box, wherein one side of box is provided with the air outlet, the adjacent one side of box is provided with the air intake, the direction of air outlet is perpendicular with the direction of air intake, the air-out end of fan is just right with the air outlet mutually, the air inlet end and the air intake intercommunication of fan, the rectification baffle sets up the one side that is provided with the air inlet end at the fan, wherein one side and the fan of rectification baffle are connected, the opposite side and the inboard of box of rectification baffle are connected, and the impeller center to the bottom half distance of fan is not more than to the rectification baffle height. The utility model provides a pair of fan air inlet rectification baffle increases the rectification baffle in fan air inlet one side and eliminates because of the air inlet space undersize, produces abnormal noise, the unusual vibration that the turbulent flow arouses.
Description
Technical Field
The utility model relates to an air treatment device technical field specifically relates to a fan air inlet rectification baffle.
Background
When the existing fan runs, a vortex is formed on the air inlet side of sucked air. In order to ensure that the formed vortex is not interfered, a certain space without interference is needed on the air inlet side.
When the design of the air inlet of the fan unit and the air inlet side of the fan are configured in a right angle, in order to ensure that the air inlet side has an air inlet space enough for forming a vortex, a sufficient size (such as size L in fig. 1) must be reserved between the plane of the air inlet side of the fan and the inner plate of the box body of the fan unit.
However, this air intake distance (e.g., dimension L in fig. 1) is limited by the overall dimensions of the fan assembly. When the fan set is designed in a model selection mode, the overall design of the central air conditioning air treatment device and the spatial position and size of the air conditioning room must be comprehensively considered. Therefore, in many cases, it is impossible to secure an air intake space on the air intake side, which is sufficient to form a vortex without interference, according to the air intake distance (e.g., the dimension L in fig. 1) determined by the external dimension of the fan unit.
If the air intake distance is not sufficient (as shown by a dimension L in fig. 1), the air intake side does not have enough space to form a vortex, and a turbulent state is generated, thereby generating abnormal noise and abnormal vibration.
At present, the general scheme adopted is: 1. structural features that avoid right angle arrangements as much as possible; 2. increase fan unit overall dimension, guarantee that air inlet distance (size L) is greater than minimum, avoid producing unusual noise, unusual vibration. However, both of these solutions are often limited by the overall design of the whole central air conditioning air handling unit, the spatial location of the air conditioning rooms, and the size and orientation of the air ducts.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the air inlet rectifying baffle of the fan is provided, the rectifying baffle is added on one air inlet side of a fan unit, and abnormal noise and abnormal vibration caused by turbulent flow due to too small air inlet space are eliminated.
The specific technical scheme is as follows:
the utility model provides an among fan air inlet rectification baffle, the power distribution box comprises a box body, fan and rectification baffle setting are in the box, wherein one side of box is provided with the air outlet, the adjacent one side of box is provided with the air intake, the direction of air outlet is perpendicular with the direction of air intake, the air-out end of fan is just right mutually with the air outlet, the air inlet end and the air intake intercommunication of fan, the rectification baffle sets up the one side that is provided with the air inlet end at the fan, wherein one side and the fan of rectification baffle are connected, the opposite side of rectification baffle is connected with the inboard of box, and the rectification baffle height is no longer than the impeller.
In the above-mentioned fan air inlet rectification baffle, still have such characteristic, the length of rectification baffle equals the width of air intake.
In the air inlet rectification baffle plate of the fan, the length direction of the rectification baffle plate is perpendicular to the plane of the air inlet end of the fan, and the air inlet end of the fan is symmetrical about the plane of the rectification baffle plate.
In the above-mentioned fan air inlet rectification baffle, still have such characteristic, rectification baffle thickness is greater than 1.6 mm.
In the above-mentioned fan air inlet rectification baffle, still have such characteristic, the width of air intake is 0.5D ~ 1.21D, wherein D equals 517.7mm, and the amount of wind of air intake equals 7460 ~ 12000m3/h。
In the air inlet rectification baffle plate of the fan, the rectification baffle plate is connected with an air inlet plane of the fan, the inner side of the box body and the bottom of the box body through the threaded fasteners.
In the air inlet rectification baffle plate of the fan, the rectification baffle plate is welded with an air inlet plane of the fan, the inner side of the box body and the bottom of the box body respectively.
In the above-mentioned fan air inlet rectification baffle, still have such characteristic, the flabellum of fan is the anticlockwise rotation from the side that is provided with the rectification baffle.
The positive effects of the technical scheme are as follows:
the utility model provides a fan air inlet rectification baffle, which is characterized in that a rectification baffle is arranged on an air inlet plane of a fan unit, thereby eliminating abnormal noise and abnormal vibration caused by turbulent flow due to the fact that the air inlet space is too small; the rectifying baffle is simple in structure and easy to maintain.
Drawings
Fig. 1 is a schematic structural view of a fan inlet air rectification baffle of the present invention;
fig. 2 is a side view of the air inlet rectification baffle of the fan of the present invention.
In the drawings: 1. a box body; 2. a fan; 3. a rectification baffle plate; 4. an air inlet; 5. an air inlet end; 6. an air outlet end; 7. and (7) air outlet.
L: the air inlet distance is the width of the air inlet; d: the housing diameter of the fan (D517.7 mm in this application).
Detailed Description
In order to make the utility model discloses technical means, creation characteristic, achievement purpose and efficiency that realize are easily understood and are known, and following embodiment combines attached figure 1 to attached figure 2 right the utility model provides a fan air inlet rectification baffle does specifically expounds.
Fig. 1 is the utility model discloses a fan air inlet rectification baffle's schematic structure, fig. 2 is the utility model discloses a fan air inlet rectification baffle's side view, in this embodiment, this fan air inlet rectification baffle mainly includes box 1, fan 2, rectification baffle 3, air intake 4, air inlet end 5, air-out end 6, air outlet 7.
In the air inlet rectification baffle plate of the fan, a fan 2 and a rectification baffle plate 3 are arranged in a box body 1, wherein one side of the box body 1 is provided with an air outlet 7, the adjacent side of the box body 1 is provided with an air inlet 4, the direction of the air outlet 7 is vertical to the direction of the air inlet 4, under the arrangement condition of the air outlet 7 and the air inlet 4, if the width L of the air inlet 4 is too small, the air inlet end 5 of the fan 2 in the working process of the fan 2 can form turbulent flow and can generate abnormal noise and vibration, the air outlet end 6 of the fan 2 is opposite to the air outlet 7, the air inlet end 5 of the fan 2 is communicated with the air inlet 4, air enters from the air inlet 4 of the box body 1 and passes through the air inlet end 5 and the air outlet end 6 of the fan 2, and is finally sent out from the air outlet 7 of the box body 1, thereby completing the air transportation, the rectification baffle plate 3 is arranged at, the other side of the rectification baffle 3 is connected with the inner side of the box body 1, the rectification baffle 3 can be fixedly connected or detachably connected with the fan 2 and the box body 1, and the height of the rectification baffle 3 is not more than the distance from the center of the impeller of the fan 2 to the bottom of the box body 1.
In a preferred embodiment, as shown in fig. 1 and 2, the length of the rectification baffle 3 is equal to the width of the air inlet 4, and the lower space of the box body 1 on the side close to the air inlet 4 is divided into two parts by the rectification baffle 3, so that the generation of air turbulence is suppressed, and the generation of abnormal noise and vibration of the fan 2 is suppressed.
In a preferred embodiment, as shown in fig. 1 and 2, the length direction of the rectification baffle 3 is perpendicular to the plane of the air inlet end 5 of the fan 2, and the air inlet end 5 of the fan 2 is symmetrical with respect to the plane of the rectification baffle 3, so that the lower space of the side of the box body 1 close to the air inlet 4 is equally divided into two parts, and the air turbulence can be restrained within a certain width range and air volume range of the air inlet 4, and the air inlet end 5 is ensured to form a normal vortex.
In a preferred embodiment, as shown in fig. 2, the flow-straightening baffle 3 is made of a hard material, the flow-straightening baffle 3 is made of a metal material, and the thickness of the flow-straightening baffle 3 is 1.6mm or more, preferably 1.6mm, so as to reduce the vibration of the flow-straightening baffle 3 itself.
In a preferred embodiment, as shown in fig. 1, the width of the intake vent 4 is in the range of 0.5D to 1.21D, where D is 517.7mm, and the air volume of the intake vent 4 isIn the range of 7460-12000 m3Is between/h. When the width of the air inlet 4 and the air quantity of the air inlet 4 are within the numerical range, the rectifying baffle 3 can effectively restrain the generation of air turbulence at the air inlet end 5.
In a preferred embodiment, as shown in fig. 1, the rectification baffle 3 is connected with the air intake plane of the fan 2, the inner side of the case 1, and the bottom of the case 1 by screw fasteners.
In a preferred embodiment, as shown in fig. 1, the rectification baffle 3 is welded to the air intake plane of the fan 2, the inside of the case 1, and the bottom of the case 1, respectively.
In a preferred embodiment, the fan blades of the fan 2 are rotated counterclockwise as viewed from the side where the rectification baffle 3 is provided, as shown in fig. 2.
In the following description, a specific embodiment is described, and it should be noted that the structures, processes and materials described in the following embodiment are only used to illustrate the feasibility of the embodiment, and are not intended to limit the scope of the present invention.
In the experiment of fan air inlet rectification baffle beneficial effect scope, use and cut apart the inboard that the baffle was used for simulating the box, separate the baffle through removing and change and cut apart the distance between baffle and the fan air inlet face. Thereby obtaining the effective range of the use of the rectifying baffle.
1. When the partition baffle moves in a range 890.5-905.9 mm (L is 1.72D-1.75D) away from the air inlet plane of the sample fan, no matter whether the rectification baffle is installed, abnormal noise does not occur.
2. When the partition baffle plate moves to be about 890.5mm (L is 1.72D) away from the air inlet plane of the sample fan, and the air volume of the sample fan reaches 7460m when the rectification baffle plate is not installed3When the noise is in the first time,/h, abnormal noise begins to appear; after the rectification baffle is installed, abnormal noise disappears. The same applies when the dividing baffle moves between 626.5-890.5 mm (L is 1.21D-1.72D) from the air inlet plane of the sample fan.
3. When the dividing baffle plate moves to about 626.5mm (L is 1.21D) away from the air inlet plane of the sample fan, and the air volume of the sample fan reaches 7460m when the rectifying baffle plate is not installed3At a time of/h, outAbnormal noise is generated; after the rectification baffle is installed, abnormal noise disappears, and when the air volume of the sample fan reaches 12000m3At/h, abnormal noise occurs. The same applies when the dividing baffle moves 258.9-626.5 mm (L is 0.5D-1.21D) away from the air inlet plane of the sample fan.
According to the above experiment, the following conclusion 1 is reached, when the air inlet distance L of the fan is 1.21D-1.72D, the air quantity is more than 7460m3At the time of/h, the rectifying baffle is installed at a proper position, so that abnormal noise and abnormal vibration can be suppressed. 2. When the air inlet distance L of the fan is 0.5D-1.21D and the air quantity is 7460-12000 m3At the time of/h, the rectifying baffle is installed at a proper position, so that abnormal noise and abnormal vibration can be restrained.
The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.
Claims (8)
1. The utility model provides a fan air inlet rectification baffle which characterized in that includes: box, fan and rectification baffle, the fan with the rectification baffle sets up in the box, wherein one side of box is provided with the air outlet, the adjacent one side of box is provided with the air intake, the direction of air outlet with the direction of air intake is perpendicular, the air-out end of fan with the air outlet is just right mutually, the air inlet end of fan with the air intake intercommunication, the rectification baffle sets up the fan is provided with the one side of air inlet end, wherein one side of rectification baffle with the fan is connected, the opposite side of rectification baffle with the inboard of box is connected, just the rectification baffle height is no longer than the impeller center of fan arrives the distance of bottom half.
2. The fan inlet fairing baffle of claim 1, wherein the length of said fairing baffle is equal to the width of said inlet opening.
3. The fan inlet air rectification baffle plate according to claim 2, wherein the length direction of the rectification baffle plate is perpendicular to the plane of the inlet end of the fan, and the inlet end of the fan is symmetrical with respect to the plane of the rectification baffle plate.
4. The fan inlet fairing baffle of claim 1, wherein the thickness of the fairing baffle is greater than 1.6 mm.
5. The fan inlet air rectification baffle plate as claimed in claim 1, wherein the width of the inlet opening is 0.5D-1.21D, wherein D is 517.7mm, and the air volume of the inlet opening is 7460-12000 m3/h。
6. The fan inlet air rectification baffle plate of claim 1, wherein the rectification baffle plate is connected with the inlet air plane of the fan, the inner side of the box body and the bottom of the box body through threaded fasteners.
7. The fan inlet air rectification baffle plate according to claim 1, wherein the rectification baffle plate is welded to the inlet air plane of the fan, the inner side of the box body and the bottom of the box body respectively.
8. The inlet air rectification baffle of the fan as claimed in claim 1, wherein the fan blades of the fan rotate counterclockwise when viewed from the side where the rectification baffle is disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920889267.9U CN210068574U (en) | 2019-06-13 | 2019-06-13 | Air inlet rectification baffle plate of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920889267.9U CN210068574U (en) | 2019-06-13 | 2019-06-13 | Air inlet rectification baffle plate of fan |
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| Publication Number | Publication Date |
|---|---|
| CN210068574U true CN210068574U (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920889267.9U Active CN210068574U (en) | 2019-06-13 | 2019-06-13 | Air inlet rectification baffle plate of fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847674A (en) * | 2021-10-25 | 2021-12-28 | 上海松华空调净化设备有限公司 | Split type FFU filters fan |
-
2019
- 2019-06-13 CN CN201920889267.9U patent/CN210068574U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847674A (en) * | 2021-10-25 | 2021-12-28 | 上海松华空调净化设备有限公司 | Split type FFU filters fan |
| CN113847674B (en) * | 2021-10-25 | 2022-11-29 | 上海松华空调净化设备有限公司 | Split type FFU filters fan |
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