CN106958711A - Low noise air channel - Google Patents
Low noise air channel Download PDFInfo
- Publication number
- CN106958711A CN106958711A CN201611268475.4A CN201611268475A CN106958711A CN 106958711 A CN106958711 A CN 106958711A CN 201611268475 A CN201611268475 A CN 201611268475A CN 106958711 A CN106958711 A CN 106958711A
- Authority
- CN
- China
- Prior art keywords
- air channel
- straight tube
- low noise
- casing
- bend pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011358 absorbing material Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/04—Expansion-compensation arrangements for pipe-lines making use of bends, e.g. lyre-shaped
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Duct Arrangements (AREA)
Abstract
The invention provides a kind of low noise air channel, the low noise air channel includes：Air channel casing, the air channel casing has gas outlet；At least two air inlet pipe, the air inlet pipe is arranged on the air channel casing, and the air inlet pipe includes：First straight tube, first straight tube is fixed on the air channel casing；Bend pipe, the bend pipe is arranged in the air channel casing, interior walls be smooth, and angle of bend is 75 105 degree；The entrance point of the bend pipe connects first straight tube, and the port of export connects the second straight tube；Second straight tube, second straight tube is arranged in the air channel casing, the centerline axis parallel of central axis and the air channel casing.The present invention has the advantages that noise is low, the pressure loss is small, stream effect is good.
Description
Technical field
The present invention relates to air channel, more particularly to low noise air channel.
Background technology
Compared with turbulent wind, it is small that laminar winds have the advantages that fungi-proofing dedusting, radiating efficiency are high, air quantity is uniform and stable, wind is made an uproar.
Therefore, laminar flow air-out is widely applied, the also more and more higher of the requirement to Duct design.
It is to realize uniform air-out in the way of baffle or static pressure mostly in the existing small-sized strip Duct design,
This scheme has many deficiencies, such as：
1. for certain casing more prolate, air inlet/outlet is vertical with air channel and air channel of gas outlet biasing, due to sky
Between position it is smaller, existing Duct design it is general it is more difficult implement, the space of prolate adds very big difficulty to air channel indoor design,
Many limitations are with the addition of to design.
2. in eccentric position box house pressure can be caused to be evenly distributed relative to air channel casing due to gas outlet position
Degree is poor, so that the difference in flow for causing each air inlet in air channel reduces the intake uniformity in air channel away from larger.
3. baffle or the method for static pressure can be such that the windage in air channel is significantly lifted, there is provided the blower fan needs of power source are relatively large
Power could meet the pressure difference reached needed for rated wind speed, energy loss is more serious.
4. in existing air channel, each air inlet can produce air-flow different in flow rate and mutually collide, this kind high low speed
Collision between air-flow can produce rule pulsation, so as to can produce more obvious howling inside air channel so that make an uproar in air channel
Sound is greatly improved.
The content of the invention
To solve the deficiency in above-mentioned prior art, the invention provides a kind of low noise, the pressure loss be small, air inlet
The good low noise air channel of uniformity.
The purpose of the present invention is achieved through the following technical solutions：
A kind of low noise air channel, the low noise air channel includes：
Air channel casing, the air channel casing has gas outlet；
At least two air inlet pipe, the air inlet pipe is arranged on the air channel casing, and the air inlet pipe includes：
First straight tube, first straight tube is fixed on the air channel casing；
Bend pipe, the bend pipe is arranged in institute's air channel casing, interior walls be smooth, and angle of bend is 75-105 degree；The bend pipe
Entrance point connect first straight tube, the port of export connects the second straight tube；
Second straight tube, second straight tube is arranged in the air channel casing, in central axis and the air channel casing
Heart diameter parallel.
Compared with prior art, the device have the advantages that being：
1. eliminate more obvious howling caused by the reasons in structure of air channel itself, it is to avoid between each air inlet
High low speed flow mutual collision, can substantially reduce noise；
2. the pressure loss is small, the power pressure difference of required offer is smaller while identical wind speed is ensured, more efficient；
3. noise is small, due to the reduction of windage and vortex, aerodynamic noise is significantly reduced；
4. size and the position of optimization design, optimize for stream effect and provide foundation.
Brief description of the drawings
Referring to the drawings, the disclosure will be easier to understand.Skilled addressee readily understands that be：This
A little accompanying drawings are used only for illustrating technical scheme, and are not intended to and protection scope of the present invention is construed as limiting.
In figure：
Fig. 1 is the structure diagram according to embodiments of the present invention 1 low noise air channel；
Fig. 2 is the interior wall construction figure of according to embodiments of the present invention 2 bend pipe.
Embodiment
Fig. 1-2 and the optional embodiment of the present invention is following description described to instruct how those skilled in the art implement
It is of the invention with reproducing.In order to instruct technical solution of the present invention, simplify or eliminate some conventional aspects.Those skilled in the art
It should be appreciated that modification or replacement from these embodiments will within the scope of the invention.Those skilled in the art should understand that
Following characteristics can combine to form multiple modifications of the present invention in a variety of ways.Thus, the invention is not limited in it is following can
Embodiment is selected, and is only limited by claim and their equivalent.
Embodiment 1：
Fig. 1 schematically illustrates the structure diagram in the low noise air channel of the embodiment of the present invention, as shown in figure 1, described low
Noise air channel includes：
The casing of the rectangular structure of air channel casing, such as prolate, the air channel casing has gas outlet, the gas outlet
The intersection point of the central axis of central axis and the air channel casing is less than the air channel to the distance of the end of the air channel casing
The half of the length of casing；
At least two air inlet pipe, the air inlet pipe is arranged on the air channel casing, and the air inlet pipe includes：
First straight tube, first straight tube is fixed on the air channel casing, the bore of the first straight tube and the bore of bend pipe
Matching；The centerline axis parallel of the first adjacent straight tube, distance is 110-120mm；
Bend pipe, such as circular winding pipe, the bore of the bend pipe is 15-35mm, is arranged in the air channel casing, and inwall is put down
Sliding, angle of bend is 75-105 degree；The entrance point of the bend pipe connects first straight tube, and the port of export connects the second straight tube；
Second straight tube, second straight tube is arranged in the air channel casing, in central axis and the air channel casing
Heart diameter parallel；The length of second straight tube is not less than 10mm, and the central axis of second straight tube is to being provided with gas outlet
Air channel casing sidepiece inwall between distance be 12.5-32.5mm.
Embodiment 2：
The low noise air channel of the embodiment of the present invention, as different from Example 1：
1. in all air inlet pipe, near the air inlet pipe of gas outlet, such as air inlet pipe relative with the gas outlet position
The second straight tube there is taper, internal diameter is tapered into along airintake direction；The bore of the bend pipe of the air inlet pipe is other air inlets
0.78-0.83 times of the bore of the bend pipe of pipe；The taper is 5-10 degree.
2. as shown in Fig. 2 there is the inwall in the bend pipe filling glass cotton etc. between serration, adjacent protrusions to inhale
Sound material.
Embodiment 3：
The application examples according to embodiments of the present invention 2 low noise air channel.
In the application examples, using 7 air inlet pipe, wherein, away from gas outlet 6 air inlet pipe bend pipe use bore for
25mm right-angled circle bend pipe, correspondingly, the bore of the first straight tube and the second straight tube is 25mm；The length of second straight tube is
10mm, the distance of central axis to the inwall of the sidepiece of the air channel casing with gas outlet of the second straight tube is 24.5mm,；The most
Bend pipe close to 1 air inlet pipe of gas outlet uses bore for 20mm right-angled circle bend pipe, and the length of the second straight tube is 15mm,
Maximum caliber is 20mm, and its internal diameter is tapered into along airintake direction, namely with taper, taper is 10 degree；7 air inlets
The centerline axis parallel of first straight tube of pipe, and perpendicular to the central axis of air channel casing, the spacing of the first adjacent straight tube is
115mm；Equal serration inside bend pipe, the projection cross sectional shape is isosceles triangle, and rising height is 5mm, along along bend pipe
Wall is uniformly distributed, and its longitudinal direction is arranged in parallel along bend pipe duct orientation, can effectively be reduced because gas is turned inside bend pipe
The afterbody vortex of formation, can make air-flow in the way of closer to laminar flow to enter in the casing of air channel；In serration ripple
The mineral wool sound-absorbing material that thickness is 1mm is posted at paddy, further the noise inside reduction air channel.
Claims (10)
1. a kind of low noise air channel, it is characterised in that：The low noise air channel includes：
Air channel casing, the air channel casing has gas outlet；
At least two air inlet pipe, the air inlet pipe is arranged on the air channel casing, and the air inlet pipe includes：
First straight tube, first straight tube is fixed on the air channel casing；
Bend pipe, the bend pipe is arranged in the air channel casing, interior walls be smooth, and angle of bend is 75-105 degree；The bend pipe
Entrance point connects first straight tube, and the port of export connects the second straight tube；
Second straight tube, second straight tube is arranged in the air channel casing, the central shaft of central axis and the air channel casing
Line is parallel.
2. low noise air channel according to claim 1, it is characterised in that：The bend pipe is circular winding pipe.
3. low noise air channel according to claim 1, it is characterised in that：The central axis of the gas outlet and the air channel
The intersection point of the central axis of casing is less than the half of the length of the air channel casing to the distance of the end of the air channel casing.
4. low noise air channel according to claim 1, it is characterised in that：The central axis of each the first straight tube is mutually put down
OK.
5. low noise air channel according to claim 1, it is characterised in that：The air inlet pipe relative with the gas outlet position
Second straight tube has taper, and internal diameter is tapered into along airintake direction；The bore of the bend pipe of the air inlet pipe is other air inlet pipe
0.78-0.83 times of bore of bend pipe.
6. low noise air channel according to claim 5, it is characterised in that：The taper is 5-10 degree.
7. low noise air channel according to claim 1, it is characterised in that：The bore of the bend pipe is 15-35mm, described the
The central axis of two straight tubes to the distance between the inwall of the sidepiece for the air channel casing for being provided with gas outlet be 12.5-32.5mm.
8. low noise air channel according to claim 1, it is characterised in that：The length of second straight tube is not less than 10mm.
9. low noise air channel according to claim 1, it is characterised in that：In the inwall of the bend pipe there is zigzag to dash forward
Rise, sound-absorbing material is filled between adjacent protrusions.
10. low noise air channel according to claim 1, it is characterised in that：The distance of first straight tube of adjacent air inlet pipe is
110-120mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611268475.4A CN106958711A (en) | 2016-12-31 | 2016-12-31 | Low noise air channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611268475.4A CN106958711A (en) | 2016-12-31 | 2016-12-31 | Low noise air channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106958711A true CN106958711A (en) | 2017-07-18 |
Family
ID=59481493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611268475.4A Pending CN106958711A (en) | 2016-12-31 | 2016-12-31 | Low noise air channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106958711A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236687A (en) * | 2018-03-26 | 2019-01-18 | 宁波华仪宁创智能科技有限公司 | Equal flow fan case and Embryo Culture work station |
| CN109974363A (en) * | 2017-12-27 | 2019-07-05 | 青岛海尔股份有限公司 | Air cooling type refrigerator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020168933A1 (en) * | 2001-05-11 | 2002-11-14 | Monson Robert James | Low noise duct system |
| CN201110442Y (en) * | 2007-12-07 | 2008-09-03 | 中铁二院工程集团有限责任公司 | Ventilated current equalizer |
| CN101818932A (en) * | 2010-05-04 | 2010-09-01 | 中铁二院工程集团有限责任公司 | Flow-equalizing ventilation device |
| CN201964084U (en) * | 2010-12-03 | 2011-09-07 | 中国石油天然气股份有限公司 | Gas collecting pipe with silencing and rectifying functions for gas conveying pipeline |
| US20110241334A1 (en) * | 2010-04-04 | 2011-10-06 | Kawano Giken Co., Ltd. | Discharge elbow provided with guide vanes |
| CN103383139A (en) * | 2012-05-04 | 2013-11-06 | 赵阿萌 | Air return port system with acoustic absorption wedges of silencer |
| CN206439556U (en) * | 2016-12-31 | 2017-08-25 | 宁波华仪宁创智能科技有限公司 | Low noise air channel |
-
2016
- 2016-12-31 CN CN201611268475.4A patent/CN106958711A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020168933A1 (en) * | 2001-05-11 | 2002-11-14 | Monson Robert James | Low noise duct system |
| CN201110442Y (en) * | 2007-12-07 | 2008-09-03 | 中铁二院工程集团有限责任公司 | Ventilated current equalizer |
| US20110241334A1 (en) * | 2010-04-04 | 2011-10-06 | Kawano Giken Co., Ltd. | Discharge elbow provided with guide vanes |
| CN101818932A (en) * | 2010-05-04 | 2010-09-01 | 中铁二院工程集团有限责任公司 | Flow-equalizing ventilation device |
| CN201964084U (en) * | 2010-12-03 | 2011-09-07 | 中国石油天然气股份有限公司 | Gas collecting pipe with silencing and rectifying functions for gas conveying pipeline |
| CN103383139A (en) * | 2012-05-04 | 2013-11-06 | 赵阿萌 | Air return port system with acoustic absorption wedges of silencer |
| CN206439556U (en) * | 2016-12-31 | 2017-08-25 | 宁波华仪宁创智能科技有限公司 | Low noise air channel |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974363A (en) * | 2017-12-27 | 2019-07-05 | 青岛海尔股份有限公司 | Air cooling type refrigerator |
| CN109974363B (en) * | 2017-12-27 | 2024-04-19 | 海尔智家股份有限公司 | Air-cooled refrigerator |
| CN109236687A (en) * | 2018-03-26 | 2019-01-18 | 宁波华仪宁创智能科技有限公司 | Equal flow fan case and Embryo Culture work station |
| CN109236687B (en) * | 2018-03-26 | 2024-04-19 | 广州市华粤行医疗科技有限公司 | Flow equalization fan case and embryo culture workstation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170718 |