CN111105663A - Silencing non-induction-port product test prototype - Google Patents
Silencing non-induction-port product test prototype Download PDFInfo
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- CN111105663A CN111105663A CN202010061569.4A CN202010061569A CN111105663A CN 111105663 A CN111105663 A CN 111105663A CN 202010061569 A CN202010061569 A CN 202010061569A CN 111105663 A CN111105663 A CN 111105663A
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- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 230000030279 gene silencing Effects 0.000 title claims abstract description 16
- 230000003068 static effect Effects 0.000 claims abstract description 53
- 229920000742 Cotton Polymers 0.000 claims abstract description 14
- 230000006698 induction Effects 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 238000004088 simulation Methods 0.000 abstract description 14
- 238000007664 blowing Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000005259 measurement Methods 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B9/00—Simulators for teaching or training purposes
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Abstract
The invention discloses a silencing type non-induction port product test prototype, which comprises a rectangular air box, wherein silencing cotton is arranged on the inner wall of the rectangular air box to form a static pressure box, an air inlet connecting pipe is arranged on the front side of the static pressure box, an air outlet is arranged at the top of the static pressure box, an air distribution plate capable of being adjusted and installed far and near relative to the air inlet connecting pipe is arranged at the position, right opposite to the air inlet connecting pipe, in the static pressure box, the air distribution plate is V-shaped, the pointed head of the V-shaped faces the air inlet connecting pipe, a long-strip-shaped air passing hole is formed in the middle of the V-shaped, and the height of the air distribution plate is consistent with the; the air outlet can be adjusted and installed back and forth; the fresh air entering the static pressure box from the air inlet connecting pipe is divided into a left path, a middle path and a right path by the air dividing plate, and then is bent and sent out through the air outlet. The trouble that various prototype machines with different sizes and specifications are required to be equipped in the traditional simulation test is avoided, the test period is shortened, the test cost is reduced, continuous simulation tests of various parameters can be carried out, and the limitation of the traditional simulation test is broken through.
Description
Technical Field
The invention relates to the technical field of test prototypes of ventilation equipment, in particular to a test prototype of a noise-reduction type non-induction-port product.
Background
The application of fresh air systems in modern buildings is increasing, and air ports are important components of indoor ends of ventilation equipment. At present, a lot of air outlets can be hung in ceilings of rooms in the market, but the most common defect is that the blowing feeling is obvious. For the user, the most comfortable conditions are: the fresh air volume reaches the volume required by transmission and distribution, and the indoor blowing feeling is not existed. However, to achieve the ventilation, the wind speed of the tuyere is very high, and the wind speed needs to be reduced while ensuring the fresh air volume, only the wind outlet area is increased, but the cost is increased due to the overlarge wind outlet area, so the flow equalizing effect is improved at the end. In order to improve the current equalizing effect, the adopted better structural form is as follows: the tail end of the air inlet connecting pipe is provided with the flow equalizing wind shield, the flow equalizing wind shield is circular and is just matched with the inner cross section of the air inlet connecting pipe, a plurality of small round holes with the same diameter are formed in the flow equalizing wind shield, the flow equalizing wind shield can rotate, and the wind shield is fixed after the angle is selected according to the air quantity during installation. Although the flow equalizing effect is good, the air quantity and the air pressure loss are large, and the manufacturing cost and the process requirement are high.
In addition, at present, for the air inlet of the fresh air system, various test prototypes with different sizes and specifications are required to be prepared during simulation test, so that the test period is long, the test cost is high, and the management is inconvenient; in addition, even if the product specifications of the test prototypes are large, continuous simulation tests of various parameters cannot be performed, and the test results are also limited greatly.
Disclosure of Invention
The invention provides a sound-deadening type non-induction-port product test prototype, which adopts a structure form that a built-in air distribution plate replaces the existing air distribution plate arranged at the tail end of an air inlet connecting pipe, can search the optimal design position by carrying out test simulation and parameter measurement on the test prototype according to the requirements of different use occasions, and comprises the steps of adjusting the position of the air distribution plate to adjust the air inlet angle, achieving the good effect of flow distribution and ensuring that the air inlet dispersion uniformity is higher; the air pressure and the static pressure are adjusted by adjusting the position of the air outlet, so that the problem of overlarge air quantity partial pressure loss is avoided.
Therefore, the technical scheme adopted by the invention is as follows: a test prototype of a silencing type non-induction port product comprises a rectangular air box in a long box shape, wherein silencing cotton is arranged on the inner wall of the rectangular air box to form a static pressure box, an air inlet connecting pipe is arranged on the front side of the static pressure box, an air outlet is arranged at the top of the static pressure box, an air distribution plate which can be adjusted and installed far and near relative to the air inlet connecting pipe is arranged at the position, right opposite to the air inlet connecting pipe, in the static pressure box, the air distribution plate is V-shaped, the pointed head of the V-shape faces the air inlet connecting pipe, a long-strip-shaped air passing hole is formed in the middle of the V-shape, and the height of the air distribution plate is consistent with the height of; the air outlet can be adjusted and installed back and forth; the fresh air entering the static pressure box from the air inlet connecting pipe is divided into a left path, a middle path and a right path by the air dividing plate, and then is bent and sent out through the air outlet.
Preferably, two adjusting plates capable of being installed in a left-right sliding mode are further arranged in the static pressure box, and the adjusting plates are matched with the cross section of the static pressure box and used for adjusting the left-right width of the static pressure box in actual use. The actual use width of the air outlet is adjusted through the left-right adjustment of the adjusting plate, so that the air outlet area is adjusted, and the adjustable parameters of the sample machine are increased from two to three.
Preferably, the front width and the rear width of the air outlet are adjustable, the front width and the rear width and the left width and the right width of the air outlet are jointly adjusted, the air outlet area is further adjusted, and the adjustable parameters of the prototype are increased from three to four.
Preferably, the rectangular air box comprises a box body and a cover plate, the front-back width of the cover plate is greater than that of the box body, a strip hole is formed in the cover plate, an upward vertical flanging is arranged on one long edge of the strip hole, the air outlet baffle is mounted on the cover plate and comprises three side faces, and the three side faces and the vertical flanging just enclose an air outlet;
the cover plate is provided with a strip-shaped mounting hole for realizing front and back adjustment and mounting on the box body, so that the front and back mounting positions of the air outlet are adjusted; the bottom of the air outlet baffle is provided with an outward horizontal flange, and the horizontal flange is provided with a strip-shaped mounting hole for realizing front-back adjustment and mounting on the cover plate, so that the front-back width of the air outlet is adjusted. The simplest structure of the adjustable structure is realized by ingeniously utilizing the structures of the box body, the box cover and the air outlet baffle, the manufacturing cost is reduced, and the operation is convenient.
Further preferably, the V-shaped included angle of the air distribution plate ranges from 60 degrees to 120 degrees, a horizontal bending edge is arranged at the bottom of the air distribution plate, a pair of mounting holes are formed in the bending edge, and a plurality of pairs of mounting holes are formed in the front and back of the bottom of the static pressure box at intervals and used for achieving distance adjustment and installation of the air distribution plate.
Preferably, the adjusting plate is made of silencing cotton, is placed in the static pressure box and is fixed by interference fit of the periphery of the adjusting plate and the static pressure box, and the thickness of the silencing cotton used for the adjusting plate is larger than that of the silencing cotton adhered to the inner wall of the static pressure box. The noise reduction cotton is used as the adjusting plate, the adjusting plate does not need to be installed, the formed space is sealed, the conventional thinking mode is broken, the conception is novel, the design is ingenious, and the operation is convenient.
More preferably, the air inlet connecting pipe is arranged at the front side of the static pressure box in the left-right center mode.
Further preferably, the box body, the cover plate, the air outlet baffle plate and the air distribution plate are all made of sheet metal parts.
The invention has the beneficial effects that: the noise-reduction type non-induction air port product test prototype with the adjustable size is manufactured to carry out simulation test, in order to achieve the good effect of flow equalization, a V-shaped air distribution plate with the air passing hole 4a in the middle is additionally arranged to ensure that air inlet is uniformly dispersed, air volume partial pressure loss is small, the difficulty and the cost of the manufacturing process are low, and meanwhile, the position of an air outlet can be adjusted. The optimal design position can be found by performing test simulation and parameter measurement through the test prototype according to the requirements of different use occasions, the air inlet angle is adjusted by adjusting the position of the air distribution plate, the good flow equalizing effect is achieved, and the air inlet dispersion uniformity is ensured to be higher; the air pressure and the static pressure are adjusted by adjusting the position of the air outlet, so that the problem of overlarge air volume partial pressure loss is solved; the design is novel, the design is ingenious, the operation is simple, the trouble that test prototypes with different sizes and specifications need to be prepared in the traditional simulation test is avoided, the test period is shortened, the test cost is reduced, the management is convenient, the continuous simulation test of various parameters can be carried out, and the limitation of the traditional simulation test is broken through.
Drawings
FIG. 1 is an exploded view of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a top view comparing the wind dividing plate installed relative to the wind inlet connecting pipe in a distance adjusting manner.
FIG. 4 is a side view comparing the wind dividing plate installed relative to the wind inlet pipe.
FIG. 5 is a side view comparing the air outlet when the air outlet is adjusted and installed.
FIG. 6 is a side view comparing the front and rear width adjustment of the outlet.
Fig. 7 is a schematic diagram of the arrangement positions of different measuring points when the simulation test is carried out by adopting the invention.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:
referring to fig. 1-2, a test prototype of a noise-reduction type non-induction-port product is mainly composed of a rectangular air box 1, an air inlet connecting pipe 2, an air distributing plate 4, an adjusting plate 5 and an air outlet baffle 6.
The rectangular air box 1 is in a long box shape, and silencing cotton (not shown in the figure) is arranged on the inner wall of the rectangular air box 1 to form a static pressure box. An air inlet connecting pipe 2 is arranged on the front side of the static pressure box, and an air outlet 3 is arranged on the top of the static pressure box.
Preferably, the rectangular wind box 1 is composed of a box body 1a and a cover plate 1 b. The front width and the back width of the cover plate 1b are larger than the front width and the back width of the box body 1a, the cover plate 1b is provided with a strip hole, one long edge of the strip hole is provided with an upward vertical flanging 1c, the air outlet baffle 6 is installed on the cover plate 1b, the air outlet baffle 6 comprises three side surfaces, and the three side surfaces and the vertical flanging 1c just enclose the air outlet 3.
And an air distribution plate 4 which can be adjusted and installed far and near relative to the air inlet connecting pipe 2 is arranged at the position, which is opposite to the air inlet connecting pipe 2, in the static pressure box.
The air distributing plate 4 is V-shaped, the pointed head of the V-shape faces the air inlet connecting pipe 2, the middle part of the V-shape is provided with a strip-shaped air passing hole 4a, the height of the air distributing plate 4 is consistent with the height of the inner cavity of the static pressure box, namely the upper end and the lower end of the air distributing plate 4 are contacted with the upper inner wall and the lower inner wall of the static pressure box. Meanwhile, the air outlet 3 can be adjusted and installed back and forth, so that fresh air entering the static pressure box from the air inlet connecting pipe 2 is divided into a left path, a middle path and a right path by the air dividing plate 4, and then is bent and sent out through the air outlet 3.
Preferably, two adjusting plates 5 capable of being installed in a left-right sliding mode are further arranged in the static pressure box, and the adjusting plates 5 are matched with the cross section of the static pressure box and used for adjusting the left-right width of the static pressure box in actual use, so that the left-right width of the air outlet is adjusted. Further, the front and rear width of the air outlet 3 is adjustable, thereby adjusting the area of the air outlet 3.
Preferably, the cover plate 1b is provided with a strip-shaped mounting hole for realizing front-back adjustment and installation on the box body 1a, so as to adjust the front-back installation position of the air outlet 3. The bottom of the air outlet baffle 6 is provided with an outward horizontal flange, and the horizontal flange is provided with a strip-shaped mounting hole for realizing the front-back adjustment and mounting on the cover plate 1b, thereby adjusting the front-back width of the air outlet 3.
The adjusting plate 5 is preferably made of silencing cotton, is placed in the static pressure box and is fixed through interference fit of the periphery and the static pressure box, an additional installation and fixing structure is not needed, and the sealing effect is good. The thickness of the silencing cotton used by the adjusting plate 5 is preferably larger than that of the silencing cotton adhered to the inner wall of the static pressure box.
The air inlet connecting pipe 2 is preferably arranged at the left and right sides of the static pressure box in the middle, so as to ensure that air is uniformly supplied from the left and right sides of the left and right air outlets 3.
The box body 1a, the cover plate 1b, the air outlet baffle plate 1c and the air distribution plate 4 are all preferably made of sheet metal parts.
Fig. 3, fig. 4 show the comparison graph when the wind board 4 is adjusted the installation relatively to the air inlet takeover 2 distance, and the new trend that gets into the static pressure case from the air inlet takeover 2 is divided into left, middle, right three routes by wind board 4, through adjusting the mounted position of wind board, thereby adjusts the air inlet angle for the new trend disperses along the length direction of air outlet more evenly in the static pressure incasement, and the more even use comfort degree that disperses is higher.
Fig. 5 is a side view comparing view when the air outlet 3 is adjusted and installed back and forth, and the position of the air outlet 3 is adjusted by adjusting the installation position of the cover plate 1b on the box body 1 a. The flow path of the wind in the static pressure box (as shown by an arrow in the figure) is changed through the position adjustment of the air outlet 3, so that the aim of adjusting the wind pressure and the static pressure is fulfilled. The closer the air outlet 3 is, the smaller the air pressure loss is, but for comfort, the larger the air pressure is, the better the air pressure is, the farther the wind blows, and the more obvious the blowing feeling of the body is; the more the air port is in front, the more uniform the air outlet at each point of the air outlet theoretically is, but the air pressure loss is large and the air blowing is not far; the best mode is that on the premise of no obvious blowing sense, the wind pressure loss is reduced, the wind speed without blowing sense is usually less than 1.2m/s, the wind speed is measured at a plurality of points of the whole strip-shaped air outlet, the more uniform the wind speed is, the closer to 1.2m/s the better the wind speed is, and the final measurement result is taken as the standard.
Fig. 6 is a side-view contrast diagram of the air outlet when the front and rear width is adjusted and installed, and the air outlet baffle 6 is adjusted and installed on the cover plate 1b in the front and rear direction, so that the air outlet baffle 6 is close to or far away from the vertical flanging 1 inch on the cover plate 1b, and the front and rear width of the air outlet 3 is adjusted. The adjusting plate 5 in the static pressure box is combined for adjusting the left and right width of the air outlet 3, so that the actual using area of the air outlet 3 is adjusted together. The larger the area of the air outlet is, the lower the air speed is, the better the blowing feeling is, but the higher the cost of the matched air outlet panel is; therefore, the area of the air outlet is minimized on the premise of meeting the low blowing feeling.
For example, when the anechoic non-induction port is applied to a hospital, the area of the ward of the hospital is 20m2～37m2According to the indoor environment of the sea-moistening enterprise, the fresh air quantity is calculated by three times of ventilation, and is 180m3/h～333m3Between h, air outlet products need to be matched for 150m according to different indoor areas of wards3/h、250m3/h、350m3The air outlets with different air volume specifications and sizes such as/h are required to be manufactured into a type capable of adjusting different sizes in order to achieve better performance and save cost, and the air outlet used for small air volume in a small room is smaller than the air outlet used for large air volume in a large roomThe size of the test sample machine can achieve the performance of different specifications.
In order to reduce the cost and the product weight, the thickness is 100-150 m3The length of the air outlet is 600mm, and the air outlet is 150-250 m3The length of the air outlet is 900mm, and the air outlet is 250-350 m3The/h is developed according to the length of the tuyere of 1200 mm. According to the requirement, a test prototype with the size-adjustable muffling type non-induction air port product is manufactured for testing, the length of the air port is adjustable, the position and the width of the air outlet are adjustable, and in order to achieve a good flow equalizing effect, a V-shaped air distribution plate with an air passing hole 4a in the middle is additionally arranged to ensure that air inlet is uniformly dispersed.
Fig. 7 shows the conditions of the passing wind speed test performed at different measurement points when the simulation test was performed using the anechoic non-induction-port product test prototype, and the measurement results are shown in tables 1, 2, and 3, with the upper and lower positions being positioned in the state shown in fig. 7. The prototype is used for carrying out simulation test, and the optimal scheme is selected for product parameter design, so that the product performance can meet the customized requirement.
TABLE 1
TABLE 2
Table 3.
Claims (8)
1. The utility model provides an experimental model machine in no induction port product of amortization type, includes rectangular wind box (1) of long box-like, be provided with the amortization cotton on rectangular wind box (1) inner wall and constitute static pressure case, install air inlet takeover (2) in the front side of static pressure case, be provided with air outlet (3) at the top of static pressure case, its characterized in that: an air distribution plate (4) which can be adjusted and installed far and near relative to the air inlet connecting pipe (2) is arranged at the position, right opposite to the air inlet connecting pipe (2), in the static pressure box, the air distribution plate (4) is V-shaped, the V-shaped pointed head part faces the air inlet connecting pipe (2), a long-strip-shaped air passing hole (4a) is formed in the middle of the V-shape, and the height of the air distribution plate (4) is consistent with that of an inner cavity of the static pressure box; the air outlet (3) can be adjusted and installed back and forth; the fresh air entering the static pressure box from the air inlet connecting pipe (2) is divided into a left path, a middle path and a right path by the air dividing plate (4), and then is bent and sent out through the air outlet (3).
2. The anechoic no-induction-opening product test prototype of claim 1, characterized in that: two adjusting plates (5) capable of being installed in a left-right sliding mode are further arranged in the static pressure box, and the adjusting plates (5) are matched with the cross section of the static pressure box and used for adjusting the left-right width of the static pressure box in actual use.
3. The anechoic no-induction-opening product test prototype of claim 2, characterized in that: the front width and the rear width of the air outlet (3) are adjustable.
4. The anechoic no-induction-opening product test prototype of claim 3, characterized in that: the rectangular air box (1) comprises a box body (1a) and a cover plate (1b), the front-back width of the cover plate (1b) is larger than the front-back width of the box body (1a), a strip hole is formed in the cover plate (1b), an upward vertical flanging (1c) is arranged on one long edge of the strip hole, an air outlet baffle (6) is installed on the cover plate (1b), the air outlet baffle (6) comprises three side faces, and the three side faces and the vertical flanging (1c) just enclose an air outlet (3);
the cover plate (1b) is provided with a strip-shaped mounting hole for realizing front and back adjustment and mounting on the box body (1a), so that the front and back mounting position of the air outlet (3) is adjusted; the bottom of the air outlet baffle (6) is provided with an outward horizontal flange, and the horizontal flange is provided with a strip-shaped mounting hole for realizing front-back adjustment and mounting on the cover plate (1b), so that the front-back width of the air outlet (3) is adjusted.
5. The anechoic no-induction-opening product test prototype of claim 3, characterized in that: the wind distribution plate (4) is provided with a horizontal bending edge (4a) at a V-shaped included angle of 60-120 degrees, a pair of mounting holes are formed in the bending edge (4a), and a plurality of pairs of mounting holes are formed in the front and back of the bottom of the static pressure box at intervals and used for achieving distance adjustment and installation of the wind distribution plate (4).
6. The anechoic no-induction-opening product test prototype according to claim 4 or 5, characterized in that: the adjusting plate (5) is made of silencing cotton, is placed in the static pressure box and is fixed through interference fit of the periphery of the adjusting plate and the static pressure box, and the thickness of the silencing cotton used for the adjusting plate (5) is larger than that of the silencing cotton adhered to the inner wall of the static pressure box.
7. The anechoic no-induction-opening product test prototype of claim 1, characterized in that: the air inlet connecting pipe (2) is arranged at the front side of the static pressure box in the left-right center mode.
8. The anechoic no-induction-opening product test prototype of claim 1, characterized in that: the box body (1a), the cover plate (1b), the air outlet baffle (6) and the air distribution plate (4) are all made of sheet metal parts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010061569.4A CN111105663B (en) | 2020-01-19 | 2020-01-19 | Noise elimination type air gap-free product test sample machine |
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| CN202010061569.4A CN111105663B (en) | 2020-01-19 | 2020-01-19 | Noise elimination type air gap-free product test sample machine |
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| CN111105663B (en) | 2024-05-14 |
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