CN113398675A - Local fine adjustment air adjusting device for purifying equipment and adjusting method thereof - Google Patents
Local fine adjustment air adjusting device for purifying equipment and adjusting method thereof Download PDFInfo
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- CN113398675A CN113398675A CN202110962065.4A CN202110962065A CN113398675A CN 113398675 A CN113398675 A CN 113398675A CN 202110962065 A CN202110962065 A CN 202110962065A CN 113398675 A CN113398675 A CN 113398675A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000012528 membrane Substances 0.000 claims abstract description 41
- 230000007704 transition Effects 0.000 claims abstract description 13
- 239000011148 porous material Substances 0.000 claims abstract description 7
- 238000000746 purification Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005352 clarification Methods 0.000 claims 1
- 238000007493 shaping process Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
- B01D46/0047—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for discharging the filtered gas
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Abstract
The invention discloses a local fine adjustment air adjusting device for purifying equipment and an adjusting method thereof, wherein the local fine adjustment air adjusting device comprises a high-efficiency air filter and a uniform flow device, and is characterized in that: the uniform flow device comprises a porous membrane and a uniform flow frame, the uniform flow frame comprises an outer frame and an inner frame, a movable space is arranged between the two frames, the inner frame comprises a plurality of fixed blocks and a plurality of moving blocks, the fixed blocks are fixed with a case of the purifying equipment through fixing screws, the moving blocks are sequentially arranged along the edge of the outer frame, each moving block is provided with a screw hole corresponding to one side of the outer frame, the outer frame is provided with a transition hole corresponding to the screw hole, and the transition hole in the outer frame is connected with the screw hole in the moving block through an adjusting screw. According to the invention, the porous membrane attached to the moving block is stretched or contracted through the relative movement of the moving block, so that the change of the pore diameter of the porous membrane is realized, the air outlet speed on the adjustment point position is changed, the different positions of the point, the row and the surface are flexibly adjusted, and laminar airflow is output.
Description
Technical Field
The invention relates to a purifying equipment technology, in particular to a local fine adjustment air adjusting device used on purifying equipment and an adjusting method thereof, which can ensure that the air flow velocity passing through the device is uniform and meet the requirement of the air flow velocity in a clean environment.
Background
Cleaning equipment such as clean benches, biosafety cabinets, laminar flow hoods and the like have strict requirements on the uniformity of wind speed in a breeze speed state (the wind speed is between 0m/s and 1 m/s). The existing micro-wind speed airflow forming device for cleaning equipment mainly comprises a fan, a flow dispersing plate and a filter arranged between the fan and the flow dispersing plate, wherein the flow dispersing plate is a uniform flow and rectifying plate for uniformly punching holes on a steel plate. However, in practice, due to various reasons, the airflow sent out from the diffuser plate is not really laminar airflow, the uniformity rate of the wind speed is low, and the anti-interference capability of the clean airflow is small.
For this reason, the applicant has applied for patents relating to solutions, such as chinese utility model patent "micro-wind speed uniform flow airflow forming device for cleaning equipment" (CN 201783501U), and chinese invention patent "bidirectional air-out silencing uniform flow balancing device for cleaning equipment and cleaning equipment thereof" (CN 105135646B), in which the former adds a layer of micron-sized porous membrane at the air outlet to stabilize the airflow and reduce the turbulence phenomenon; the balance module is added at the air outlet to form stable air output and air speed.
Although the two solutions described above solve some of the problems of overall wind speed in different directions, the skilled person has found that none of the previous solutions can be adjusted individually in points or rows in order to handle some local range of wind speed adjustments. For example, the overall wind speed reaches a standard value, and only at a certain point or points, the occurrence of the overall wind speed is scattered and irregular and exceeds the range value of the specified index, and therefore, detailed adjustment is not performed by too many means, and people skilled in the art are always seeking a better processing mode.
Disclosure of Invention
The invention aims to provide a local fine-adjustment air adjusting device for purifying equipment and an adjusting method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that: a local fine-adjustment air adjusting device for purifying equipment comprises a high-efficiency air filter and a uniform-flow device arranged on an air outlet of the high-efficiency air filter, wherein the uniform-flow device comprises a porous membrane and a uniform-flow frame for fixing the porous membrane, the uniform-flow frame comprises an outer frame and an inner frame, a movable space is arranged between the two frames, the inner frame comprises a plurality of fixed blocks and a plurality of movable blocks, the fixed blocks are fixed with a machine box of the purifying equipment through fixing screws, are respectively positioned on the inner sides of four corners of the outer frame and are fixed with the machine box from outside to inside; the moving blocks are sequentially arranged along the edge of the outer frame, one side of each moving block, corresponding to the outer frame, is provided with a screw hole, the outer frame is provided with a transition hole corresponding to the screw hole, the transition hole on the outer frame is connected with the screw hole on the moving block through an adjusting screw, and when the adjusting screw is screwed, the moving block is driven to move in the moving space; the edge of the porous membrane is fixed on the inner frame.
In the technical scheme, the porous membrane is a micron-sized breathable elastic membrane, the edge of the porous membrane is attached to the inner frame, and each moving block is provided with an inward pre-tightening tension, so that the adjusting screw is always attached to the outer frame.
In the technical scheme, the fixing block is formed by stamping a metal plate and comprises a top surface and two adjacent side plates, the top surface is provided with a fixing hole, and the fixing screw is fixedly connected with the case through the fixing hole.
In the above technical solution, the outer frame is composed of a bottom plate with an air outlet screen plate and peripheral side plates, transition holes are formed in the side plates corresponding to the adjusting screws, connecting holes are formed in the bottom plate corresponding to the fixing screws, and the fixing screws penetrate through the connecting holes and the fixing holes in the fixing blocks to be fixedly connected with the case.
In the technical scheme, the moving blocks are formed by bending metal plates and comprise top surfaces and side surfaces, the porous films are adhered on the top surfaces, the screw holes are formed in the side surfaces, the adjacent moving blocks are closely arranged, and every two moving blocks are in guiding sliding connection.
In the above technical scheme, the high efficiency air filter is installed on the air outlet of the case, a fixing plate extending outwards is arranged on the case at the air outlet, and the tail end of the fixing screw is connected with the fixing plate.
In the technical scheme, the moving blocks in the inner frame are uniformly distributed between every two fixed blocks, the number of the moving blocks is in direct proportion to the local adjustment capacity of the porous membrane, and the more the moving blocks are, the more accurate the adjustment point positions are.
In order to achieve the purpose, the technical scheme of the method adopted by the invention is as follows: an adjusting method of a local fine adjustment wind adjusting device comprises the following steps:
a. detecting the air outlet speed at the air outlet of the purifying equipment to obtain the air speed values of a plurality of preset points;
b. comparing the detected wind speed value with a rated wind speed value, and determining the X-axis value and the Y-axis value of the coordinate point to be adjusted;
c. according to the X-axis value and the Y-axis value obtained in the step, the adjusting screws at the corresponding positions are found on the outer frame in the uniform flow frame, when the detected wind speed value is lower than the rated wind speed value, the adjusting screws passing through the coordinate point in the X direction and the Y direction are stretched outwards, so that the original aperture of the porous membrane around the coordinate point is enlarged, the wind outlet resistance is reduced, the wind outlet speed is increased, and the rated wind speed value is reached; on the contrary, when the detected wind speed value is higher than the rated wind speed value, the adjusting screws passing through the coordinate point in the X direction and the Y direction are pressed inwards, so that the original pore diameter of the porous membrane around the coordinate point is reduced, the wind outlet resistance is increased, the wind outlet speed is reduced, and the rated wind speed value is reached;
d. and installing the adjusted uniform flow frame on the air outlet.
In the above technical solution, the preset point is a plurality of point locations or a plurality of lines or a certain area set according to the use requirement of the purification equipment.
In the technical scheme, the adjusting screws passing through one end or two ends of the point are adjusted according to the X, Y axis value required to be adjusted, so that the pore diameter of the porous membrane at the corresponding coordinate point is changed.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. according to the invention, the air outlet is provided with the uniform flow device which comprises the porous membrane and the uniform flow frame, and the inner frame in the uniform flow frame is used for locally adjusting the aperture of the porous membrane, so that the air outlet speed at a certain point, a certain row or a certain area at the air outlet meets the requirement of rated air speed, the uniform air speed of the whole air outlet is realized, and the laminar air flow requirement under a clean environment is met;
2. the inner frame is formed by splicing a fixed block and a movable block, and the distance between the movable block and the outer frame can be changed by adjusting an adjusting screw on the movable block, so that the porous membrane adhered on the movable block is stretched or compressed together, the aperture on the corresponding position is changed, the wind speed resistance is changed, the aim of adjusting the wind volume at the position is achieved, and other positions are not influenced;
3. the moving blocks are more, the adjusting accuracy is higher, compared with the traditional air uniformizing mechanism, the adjusting target of the air uniformizing mechanism is a point, a row and a small area, the air uniformizing mechanism can be independently adjusted, the whole air outlet surface is not adjusted, and the obtained air outlet effect is better;
4. the invention has simple and ingenious structure, breaks through the inherent thinking, and optimizes the existing wind-homogenizing and wind-rectifying device in a point-to-surface manner.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a schematic side view of FIG. 1;
FIG. 3 is a reference diagram for use of the first embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a state of four-side stretching according to an embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4;
FIG. 6 is a schematic view of the inner frame and the outer frame of FIG. 4 with the porous membrane removed;
FIG. 7 is a schematic diagram of an outer frame structure according to an embodiment of the present invention;
fig. 8 is schematic structural diagrams (a) and (b) of a moving block and a fixed block according to a first embodiment of the present invention;
FIG. 9 is a schematic view of a state of two-sided stretching according to the first embodiment of the present invention;
FIG. 10 is a schematic view of a state of three-side stretching according to an embodiment of the present invention;
FIG. 11 is a schematic diagram illustrating a state in which four sides are contracted according to an embodiment of the present invention;
wherein: 1. a high efficiency air filter; 2. a porous membrane; 3. an outer frame; 4. an inner frame; 5. an activity space; 6. a fixed block; 7. a moving block; 8. a set screw; 9. a chassis; 10. a screw hole; 11. a transition hole; 12. an adjusting screw; 13. a fixing hole; 14. a base plate; 15. a side plate; 16. and (7) fixing the plate.
Detailed Description
The invention is further described with reference to the following figures and examples:
the first embodiment is as follows: referring to fig. 1 to 11, a local fine-adjustment air adjusting device for a purifying device comprises a high-efficiency air filter 1 and a uniform flow device arranged at an air outlet of the high-efficiency air filter 1, wherein the uniform flow device comprises a porous membrane 2 and a uniform flow frame for fixing the porous membrane, the uniform flow frame comprises an outer frame 3 and an inner frame 4, a movable space 5 is arranged between the two frames, the inner frame 4 comprises a plurality of fixed blocks 6 and a plurality of movable blocks 7, the fixed blocks 6 are fixed with a chassis 9 of the purifying device through fixing screws 8, are respectively positioned at the inner sides of four corners of the outer frame 3, and are fixed with the chassis from outside to inside; the moving blocks 7 are sequentially arranged along the edge of the outer frame 3, a screw hole 10 is formed in one side, corresponding to the outer frame 3, of each moving block 7, a transition hole 11 corresponding to the screw hole 10 is formed in the outer frame 3, the transition hole 11 in the outer frame 3 is connected with the screw hole 10 in the moving block 7 through an adjusting screw 12, and when the adjusting screw 12 is screwed, the moving blocks 7 are driven to move in the moving space 5; the edge of the porous membrane 2 is fixed to the inner frame 4.
As shown in fig. 1 to 3, the porous membrane 2 is a micro-sized air-permeable elastic membrane, and the edge thereof is attached to the inner frame 4 and has an inward tensile force for each moving block 7 so that the adjusting screw 12 is always attached to the outer frame 3. Each moving block 7 is provided with a threaded hole M4, and an adjusting screw 12M 4 x 25 is connected with the moving block 7 through a transition hole 11 on the outer frame 3, and a certain pre-tightening tension is required.
As shown in fig. 1 and 8, the fixing block 6 is formed by stamping a metal plate, and is formed by a top surface and two adjacent side plates, a fixing hole 13 is formed in the top surface, and the fixing screw 8 is fixedly connected with the case 9 through the fixing hole 13. The moving blocks 7 are formed by bending metal plates and comprise top surfaces and side surfaces, the porous membranes 2 are adhered on the top surfaces, the screw holes 10 are formed in the side surfaces, the adjacent moving blocks are closely arranged, and every two moving blocks are in guiding sliding connection. The fixed blocks 6 are positioned at four corners of the inner frame 4, and the moving blocks 7 are sequentially arranged between the fixed blocks 6 to form the inner frame 4. The side lengths (the distance between the adjacent fixed blocks 6) of the inner frames 4 are uniformly distributed and separated by the moving blocks 7, and the number of the moving blocks 7 is in direct proportion to the local adjustment capacity of the porous membrane 2, namely, the more the moving blocks 7 are, the more accurate the adjustment point positions are. An activity space 5 of at least 15mm is left between the inner frame 4 and the outer frame 3, namely the size of the outer frame 3 is at least larger than that of the inner frame 4 by 15 mm.
As shown in fig. 7, the outer frame 3 is composed of a bottom plate 14 with an air outlet mesh plate and peripheral side plates 15, transition holes 11 are formed in the positions, corresponding to the adjusting screws 12, on the side plates 15, connecting holes are formed in the positions, corresponding to the fixing screws 8, of the bottom plate 14, and the fixing screws 8 penetrate through the connecting holes and fixing holes 13 in the fixing blocks 6 to be fixedly connected with the case 9. As shown in fig. 3, the high efficiency air filter 1 is installed on the air outlet of the chassis 9, a fixing plate 16 extending outward is disposed on the chassis wall at the air outlet, and the tail end of the fixing screw 8 is connected to the fixing plate 16.
The specific regulation method is as follows:
the method comprises the following steps:
a. detecting the air outlet speed at the air outlet of the purifying equipment (selecting an air measuring mechanism in the prior art or CFD software simulation test), and obtaining the air speed values of a plurality of preset points;
b. comparing the detected wind speed value with a rated wind speed value, and determining the X-axis value and the Y-axis value of the coordinate point to be adjusted;
c. according to the X-axis value and the Y-axis value obtained in the step, the adjusting screws at the corresponding positions are found on the outer frame in the uniform flow frame, when the detected wind speed value is lower than the rated wind speed value, the adjusting screws passing through the coordinate point in the X direction and the Y direction are stretched outwards, so that the original aperture of the porous membrane around the coordinate point is enlarged, the wind outlet resistance is reduced, the wind outlet speed is increased, and the rated wind speed value is reached; on the contrary, when the detected wind speed value is higher than the rated wind speed value, the adjusting screws passing through the coordinate point in the X direction and the Y direction are pressed inwards, so that the original pore diameter of the porous membrane around the coordinate point is reduced, the wind outlet resistance is increased, the wind outlet speed is reduced, and the rated wind speed value is reached;
d. and installing the adjusted uniform flow frame on the air outlet.
The preset points are a plurality of point positions or a plurality of lines or a certain area set according to the use requirement of the cleaning equipment. As shown in fig. 4, 9, 10, 11, the adjusting screw is adjusted through one or both of the point(s) according to the X, Y axis data value adjusted as needed to form a porous membrane pore size change at the corresponding coordinate point.
In this embodiment, when the wind speed to a certain coordinate point is less than the required range value, can outwards stretch the X direction both ends and the Y direction both ends adjusting screw that pass through this coordinate point position, make the former aperture grow of this meeting point, reduce air-out resistance, heighten the air-out wind speed, reach the wind speed that improves this coordinate point.
On the contrary, if the wind speed of the coordinate point is larger than the required range value, the adjusting screws at the two ends can be adjusted and contracted inwards, so that the aperture is reduced, the resistance is increased, and the wind outlet speed is reduced. As shown in fig. 11.
If the exhaust air is larger or smaller than the specified range value, the size of the stretching and shrinking aperture in the X direction or the Y direction can be adjusted to adjust the exhaust air speed, and the air speed meets the required range value. As shown in fig. 9.
Even the adjusting screws are rotated at different X-coordinate (or Y-coordinate) positions of the upper frame and the lower frame (or the left frame and the right frame) to control the aperture of the porous membrane, so that the aim of adjusting the wind speed in a row of inclined positions is fulfilled, and regional adjustment is realized.
Claims (10)
1. The utility model provides a local fine setting air-handling device for clarification plant is last, includes high-efficient air cleaner and sets up the even device that flows on high-efficient air cleaner air outlet, its characterized in that: the flow homogenizing device comprises a porous membrane and a flow homogenizing frame for fixing the porous membrane, the flow homogenizing frame comprises an outer frame and an inner frame, a movable space is arranged between the two frames, the inner frame comprises a plurality of fixed blocks and a plurality of moving blocks, the fixed blocks are fixed with a chassis of the purifying equipment through fixing screws, are respectively positioned on the inner sides of four corners of the outer frame and are fixed with the chassis from outside to inside; the moving blocks are sequentially arranged along the edge of the outer frame, one side of each moving block, corresponding to the outer frame, is provided with a screw hole, the outer frame is provided with a transition hole corresponding to the screw hole, the transition hole on the outer frame is connected with the screw hole on the moving block through an adjusting screw, and when the adjusting screw is screwed, the moving block is driven to move in the moving space; the edge of the porous membrane is fixed on the inner frame.
2. The local fine-tuning wind-adjusting device for use on a purification apparatus of claim 1, wherein: the porous membrane is a micron-sized breathable elastic membrane, the edge of the porous membrane is attached to the inner frame, and the porous membrane has inward pre-tightening tension on each moving block, so that the adjusting screws are always attached to the outer frame.
3. The local fine-tuning wind-adjusting device for use on a purification apparatus of claim 1, wherein: the fixed block is formed by stamping a metal plate and comprises a top surface and two adjacent side plates, wherein the top surface is provided with a fixed hole, and the fixed screw is fixedly connected with the case through the fixed hole.
4. The local fine-tuning wind-adjusting device for use on a purification apparatus according to claim 1 or 3, characterized in that: the outer frame is composed of a bottom plate with an air outlet screen plate and peripheral side plates, transition holes are formed in the positions, corresponding to the adjusting screws, of the side plates, connecting holes are formed in the positions, corresponding to the fixing screws, of the bottom plate, and the fixing screws penetrate through the connecting holes and the fixing holes in the fixing blocks to be fixedly connected with the case.
5. The local fine-tuning wind-adjusting device for use on a purification apparatus of claim 1, wherein: the moving blocks are formed by bending metal plates and comprise top surfaces and side surfaces, the porous films are adhered to the top surfaces, the screw holes are formed in the side surfaces, the adjacent moving blocks are closely arranged, and every two moving blocks are in guiding sliding connection.
6. The local fine-tuning wind-adjusting device for use on a purification apparatus of claim 1, wherein: the efficient air filter is arranged on the air outlet of the case, a fixing plate extending outwards is arranged on the case at the air outlet, and the tail end of the fixing screw is connected with the fixing plate.
7. The local fine-tuning wind-adjusting device for use on a purification apparatus of claim 1, wherein: the moving blocks in the inner frame are uniformly distributed between every two fixed blocks, the number of the moving blocks is in direct proportion to the capacity of locally adjusting the porous membrane, and the more the moving blocks are, the more accurate the adjusted point positions are.
8. A method of adjusting a local fine-tuning wind-shaping device according to claims 1-7, comprising the steps of:
a. detecting the air outlet speed at the air outlet of the purifying equipment to obtain the air speed values of a plurality of preset points;
b. comparing the detected wind speed value with a rated wind speed value, and determining the X-axis value and the Y-axis value of the coordinate point to be adjusted;
c. according to the X-axis value and the Y-axis value obtained in the step, the adjusting screws at the corresponding positions are found on the outer frame in the uniform flow frame, when the detected wind speed value is lower than the rated wind speed value, the adjusting screws passing through the coordinate point in the X direction and the Y direction are stretched outwards, so that the original aperture of the porous membrane around the coordinate point is enlarged, the wind outlet resistance is reduced, the wind outlet speed is increased, and the rated wind speed value is reached; on the contrary, when the detected wind speed value is higher than the rated wind speed value, the adjusting screws passing through the coordinate point in the X direction and the Y direction are pressed inwards, so that the original pore diameter of the porous membrane around the coordinate point is reduced, the wind outlet resistance is increased, the wind outlet speed is reduced, and the rated wind speed value is reached;
d. and installing the adjusted uniform flow frame on the air outlet.
9. The adjustment method according to claim 8, characterized in that: the preset points are a plurality of point positions or a plurality of lines or a certain area set according to the use requirement of the purifying equipment.
10. The adjustment method according to claim 8, characterized in that: and adjusting the adjusting screw passing through one end or two ends of the point according to the X, Y axis value required to be adjusted to form the pore diameter change of the porous membrane of the corresponding coordinate point.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110962065.4A CN113398675B (en) | 2021-08-20 | 2021-08-20 | Local fine adjustment air adjusting device for purifying equipment and adjusting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110962065.4A CN113398675B (en) | 2021-08-20 | 2021-08-20 | Local fine adjustment air adjusting device for purifying equipment and adjusting method thereof |
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| CN113398675A true CN113398675A (en) | 2021-09-17 |
| CN113398675B CN113398675B (en) | 2021-11-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114643085A (en) * | 2022-05-18 | 2022-06-21 | 苏州安泰空气技术有限公司 | Air supply arrangement for superclean bench |
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2021
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| JP2004012769A (en) * | 2002-06-06 | 2004-01-15 | Canon Inc | Cooling unit for liquid crystal projector |
| CN101972765A (en) * | 2010-08-31 | 2011-02-16 | 苏州安泰空气技术有限公司 | Micro-air-velocity uniform air flow forming device for cleaning equipment |
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