CN206890746U - A kind of double air channel noiseless air exhausting devices based on sound wave interference - Google Patents
A kind of double air channel noiseless air exhausting devices based on sound wave interference Download PDFInfo
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- CN206890746U CN206890746U CN201720667775.3U CN201720667775U CN206890746U CN 206890746 U CN206890746 U CN 206890746U CN 201720667775 U CN201720667775 U CN 201720667775U CN 206890746 U CN206890746 U CN 206890746U
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Abstract
The utility model belongs to exhaust equipment technical field, and in particular to a kind of double air channel noiseless air exhausting devices based on sound wave interference.The utility model provides a kind of double air channel noiseless air exhausting devices based on sound wave interference, including being disposed adjacent and synchronizing the air channel of air draft and the control device of control synchronous working, the blower fan that center is provided with each air channel, there is helix groove on air channel inwall between blower fan and air draft mask, helix groove both ends open and middle closed, the indoor exhaust wind mask that the air inlet in air channel is provided with, indoor exhaust wind mask is provided with mask controlled motor, the other end in air channel is provided with check (non-return) valve, and rainhat is provided with the outside of check (non-return) valve.The utility model increases ventilation-sectional area using double air channels, wind speed is reduced under conditions of ventilation is met, the helix groove of air channel inwall forms sound wave interference, reduce and even abate the noise, two low-power exhaust blower synchronous workings, the operating noise of exhaust blower is preferably minimized, while ensures enough ventilations.
Description
Technical field
The utility model belongs to exhaust equipment technical field, and in particular to a kind of double air channel noiseless based on sound wave interference
Air exhausting device.
Background technology
At present, with Chinese architecture ventilation industry development, particularly under the promotion of haze, VMC gradually enters
Enter the visual field of people, initially enter huge numbers of families.VMC is made up of a set of independent empty supply air system and exhaust system
Gas processing system, it is indoor by being sucked after the fresh air filtering of outdoor, while the pollution air exhalation of interior is discharged to outdoor, it is real
The replacing of existing room air, to keep the cleanliness factor of room air a, there is provided cleaning, oxygen-enriched, healthy domestic environment, protection
The health of household.
At present also there is the problems such as noise pollution, ventilation effect in VMC in family installs.To ensure ventilation effect,
Need in sleeping indoor location exhaust outlet.Noise caused by exhaust outlet work can have a strong impact on the rest of people in bedroom.
Chinese patent CN105351225A discloses a kind of classroom fan of low noise, including motor, is arranged on motor
The fixed seat of lower end and the fan blade being connected in fixed seat；Also include being connected to block cover and the fixation at left and right sides of fixed seat
In the noise reduction unit of fan blade surrounding.In the utility model, it is arranged on the block cover at left and right sides of fixed seat and wind-force will be played and led
The effect of stream.The setting of sound wave induction installation, process chip, sonic generator can produce, waveform phase equal with noise level
The opposite sound wave in position, and noise is reduced according to the principle of interference of ripple, reach the effect of noise reduction.
Chinese patent CN101789360A discloses a kind of controllable bidirectional cross circulation ventilation device, including left ventilation duct,
Right ventilation duct, hollow closed chamber and wind inlet channel, exhaust air flue, the blower fan being arranged on outside chamber, left ventilation duct, the right side are logical
Airduct is respectively protruding into the both sides in chamber and in chamber, is opened up respectively in the left ventilation duct side wall corresponding with right ventilation duct
There is air vent, wind inlet channel is arranged in parallel with the exhaust air flue, and wind inlet channel includes interconnected left wind inlet channel and the right side
Wind inlet channel, exhaust air flue include interconnected left exhaust air flue and right exhaust air flue, left wind inlet channel and the left air-out
Air channel connect with left ventilation duct simultaneously by air duct joint, right wind inlet channel and the left exhaust air flue by air duct joint simultaneously
Connected with right ventilation duct, blower fan has air outlet and air inlet, and the air inlet of blower fan connects with wind inlet channel and is located at left air intake
Between air channel and right wind inlet channel, the air outlet of blower fan connects and is located at left exhaust air flue to go out with the right side with the exhaust air flue
Between wind air channel, be provided with air intake valve member between the air inlet of the blower fan and the wind inlet channel, the air outlet of blower fan with
Air-out valve member, chamber, left ventilation duct, left wind inlet channel, blower fan, right exhaust air flue, the right side are provided between the exhaust air flue
Ventilation duct is interconnected and forms right-hand circular loop, chamber, right ventilation duct, right wind inlet channel, blower fan, left exhaust air flue, a left side
Ventilation duct is interconnected and forms left-hand circular loop.
Above-mentioned patent can't be solved effectively, at present VMC also existing noise pollution, ventilation in family installs
The problem of effect is bad.
Utility model content
The technical problems to be solved in the utility model is, it is desirable to provide solve the noise problem of VMC exhaust outlet,
It can solve the problem that VMC also has the problem of noise pollution, ventilation effect difference in family installs.
A kind of to solve the above problems, double air channel noiseless air drafts dress based on sound wave interference provided by the utility model
Put, including be disposed adjacent and synchronize the air channel of air draft and control the control device of synchronous working, it is characterised in that be each
Center is provided with blower fan in the air channel, and the inwall in the air channel is provided with helix groove, and the rotating cycle of the helix groove is at least
More than one, the helix groove both ends open and middle closed, the air inlet in the air channel is provided with indoor exhaust wind mask, described
Indoor exhaust wind mask is provided with mask controlled motor, and the other end in the air channel is provided with check (non-return) valve, is provided with the outside of the check (non-return) valve anti-
Rain cap.
Preferable technical scheme, the blower fan include the flabellum being arranged on arbor, and the arbor is provided with synchronizer and matched somebody with somebody
Pouring weight, the balancing weight are provided with tuningout screw.
Preferable technical scheme, two air channels are arranged to be set up in parallel, and the thickness range in the air channel is：5~
10mm, diameter range are 95~110mm, and the inside diameter ranges in the air channel are：85~105mm.
Preferable technical scheme, two air channel centre bores are away from the odd number multiple that scope is numerical value in 150~240mm.
Preferable technical scheme, the helix groove sets air channel inwall between blower fan and mask and close-packed arrays, institute
State helix groove and the line of both ends open and the centerline parallel of pipeline, spacing range 20-80mm, the helix are set
The rotating cycle of groove is 1-4 circles, and the helix groove length range is 300-1300mm, the helix groove depth and width
Scope is 2-3mm.
Preferable technical scheme, the wind speed range of the air channel inner blower are the meter per second of 0.3 meter per second~1.8.
Preferable technical scheme, two air channels be arranged to " 8 " font, the thickness range in the air channel is 5~10mm,
Diameter value scope is 95~110mm, the 85~105mm of interior diameter scope in the air channel, two air channel centre bores away from number
It is worth the odd number multiple that scope is numerical value in 150~240mm, the scope rotating speed of the motor is 1000 revolutions per seconds~3000 revolutions per seconds.
Preferable technical scheme, the control circuit in the control device include the interlock circuit of blower fan synchronous working, adjusted
The alignment circuit and corresponding bleeder circuit of rectification campaign machine threshold.
The utility model is provided and had the advantages that compared with prior art：
1st, increase ventilation-sectional area using double air channels, wind speed is reduced under the regulation for meeting ventilation, reduce and even eliminate
Wind is made an uproar.
2nd, the helix groove of air channel inwall forms sound wave interference, reduces and even abates the noise.
3rd, worked asynchronously, the operating noise of exhaust blower is preferably minimized, while ensure foot using two low-power exhaust blowers
Enough ventilations.
4th, the distance of two blower fans is controlled, based on sound wave interference principle, using the exhaust blowers of two synchronous workings as sound wave source,
Reduce and even eliminate exhaust blower operating noise.
Brief description of the drawings
Fig. 1 is the three-dimensional knot in single air channel in double noiseless air exhausting devices in air channel described in the utility model based on sound wave interference
Composition；
Fig. 2 is the main view of double air channel noiseless air exhausting device embodiments 1 described in the utility model based on sound wave interference
Figure；
Fig. 3 is the stereochemical structure of blower fan in double noiseless air exhausting devices in air channel described in the utility model based on sound wave interference
Figure；
Fig. 4 is the main view of double air channel noiseless air exhausting device embodiments 2 described in the utility model based on sound wave interference
Figure；
Fig. 5 be double noiseless air exhausting devices in air channel described in the utility model based on sound wave interference embodiment 1 in air channel
Open mode figure；
Fig. 6 be double noiseless air exhausting devices in air channel described in the utility model based on sound wave interference embodiment 1 in air channel
Developed projection；
Fig. 7 is the circuit of control device in double noiseless air exhausting devices in air channel described in the utility model based on sound wave interference
Figure；
Fig. 8 is that the exhaust fan in double noiseless air exhausting devices in air channel described in the utility model based on sound wave interference is gentle
Flow the schematic diagram of noise；
Fig. 9 is the blower fan after the noise reduction in double noiseless air exhausting devices in air channel described in the utility model based on sound wave interference
With the schematic diagram of pneumatic noise.
Reference
In figure：1-indoor exhaust wind mask, 2-mask controlled motor, 3-air channel, 4-non-return air-valve, 5-rainhat,
6-blower fan, 61-flabellum, 62-synchronizer, 63-arbor, 64-tuningout screw, 65-balancing weight, 7-helix groove.
Embodiment
Specific embodiment of the utility model is described in detail below with reference to accompanying drawing.
Embodiment 1
The utility model has using sound wave in transmitting procedure interferes effect, when two frequencies are identical, vibration side
Interference just occurs when being overlapped mutually in the sound wave sent to sound source that is identical and acting in agreement.If their phase phase
Together, two ripples superposition amplitude increase acoustic pressure is strengthened；Conversely, their opposite in phase, two ripples superposition amplitude reduces acoustic pressure and weakened,
If two wave amplitudes are the same, will be completely counterbalanced by.Due to the interference effect of sound wave, the sound field in space is often set fixed distribution occur,
Crest and trough are formed, the effect of comb filter is seemed from frequency response curve, i.e.,：Often said in sound equipment term ----standing wave is existing
As.
As depicted in figs. 1 and 2, a kind of double air channel noiseless air drafts dress based on sound wave interference provided by the utility model
Put, including be disposed adjacent and synchronize the air channel 3 of air draft and control the control device of synchronous working, air channel 3 is cylinder knot
Structure, each center is provided with blower fan 6 in the air channel 3, and the inwall in the air channel 3 is provided with helix groove 7, the helix groove 7
Rotating cycle at least more than one, the both ends open of helix groove 7 and middle closed, the helix groove 7 is set in air channel 3
On wall, and between blower fan 6 and mask 1 and close-packed arrays, the both ends of helix groove 7 set opening A, B, that is, are open and A and open
Mouth B, be open A and opening B line and the centerline parallel of pipeline 3, and as shown in Fig. 6 and 7, be open A and opening B spacing ranges
For a=20-80mm, that is, opening B and opening A projection A1 distance, preferable a values for 20,30,40,50,60,65 or
80mm, design parameter value is referring to table 1 below and table 2：Described in detail wherein by taking a=20mm as an example as follows：
r：Radius, 2r=100mm, a：The length being open between A, B；
n：Rotating cycle, preferably n=1,2,3,4；c：Helical length
Δc：The two beam sound waves that light wave is divided into outlet A, i.e. light wave A', light wave B'
Pass to the range difference being had during outlet B, Δ c=c-a, when the odd-multiple that Δ c is sound wave half-wavelength, i.e. two beam sound waves are just anti-
To, would interfere with, eliminate noise, even if can not be formed it is complete reversely, reduce noise after may also interfere with.
Concrete principle：Noise is divided into two beam sound wave A' and B', light wave A' continuation in the entry position of the helix groove 7 of sealing
Propagated in air channel 3, light wave B' enters the helix groove 7 of sealing, light wave A' and beam sound wave the going out in helix groove 7 of light wave B' two
Met at mouthful, and form sound wave interference.Pass through the length for the helix groove 7 for controlling sealing so that light wave A' and light wave B' is from entering
Mouth is exactly equal to the half wavelength of sound wave to the distance of outlet, then noise corresponding to the wave band is completely eliminated in can.When air channel 3
When helix groove 7 on inwall can form sound wave interference, to reduce or even abate the noise.
As shown in FIG. 8 and 9, the air draft wind in the blower fan 6 after noise reduction and the double air channel noiseless air exhausting devices of air-flow noise ratio
The pneumatic noise of machine 6 is small.
In the present embodiment, design parameter value sees below Tables 1 and 2：
Numerical value-table 1 of double air channel noiseless air exhausting devices based on sound wave interference
Numerical value-table 2 of double air channel noiseless air exhausting devices based on sound wave interference
The spiral number of turns of the helix groove 7, preferable spiral number of turns scope are enclosed for 1-4, in the present embodiment, spiral number of turns
For 1,2,3 or 4 circles, the length range of helix groove 7 is c=300-1300mm, the depth and width scope of helix groove 7
For 2-3mm.Therein, the wind speed range of the inner blower 6 of air channel 3 is the meter per second of 0.3 meter per second~1.8.The air intake in the air channel 3
Mouth is provided with indoor exhaust wind mask 1, and the indoor exhaust wind mask 1 is provided with mask controlled motor 2, and the other end in the air channel 3 is provided with
Check (non-return) valve 4, the outside of check (non-return) valve 4 are provided with rainhat 5.
As shown in figure 3, the blower fan 6 includes the flabellum 61 being arranged on arbor 63, the arbor 63 is provided with synchronizer 62
With balancing weight 65, the balancing weight 65 is provided with tuningout screw 64.
In the present embodiment, to be set up in parallel, the thickness range r2 in the air channel 3 is in two air channels 3：5~10mm,
2r1 diameter ranges are 95~110mm, and the inside diameter ranges in the air channel 3 are：85~105mm, two centre bores of air channel 3 away from
Scope is the odd number multiple of numerical value in 150~240mm.
Wherein, the control circuit in the control device, as shown in fig. 7, comprises the interlock circuit of the synchronous working of blower fan 6,
Adjust the alignment circuit of the threshold of blower fan 6 and corresponding bleeder circuit.
In the present embodiment, two air channels 3 are arranged to be set up in parallel, and the thickness range in the air channel 3 is a=5~10mm,
Radius b=85~110mm, two centre bores of air channel 3 are away from the odd number multiple that number range C1 is 65~75mm.Wherein institute
The range of speeds for stating the blower fan 6 in air channel 3 is 1000 revolutions per seconds~3000 revolutions per seconds.
Embodiment 2
As shown in figure 4, the present embodiment is further improved on the basis of embodiment 1, difference is, the present embodiment
In, there is provided a kind of double air channel noiseless air exhausting devices based on sound wave interference, two air channels 3 set the " 8 " fonts that are connected to each other
Structure, wherein, the thickness in the air channel 3 is a=5mm, radius r=95mm, two centre bores of air channel 3 away from being 2e for C2,
The number range of the e is 55~70mm odd number multiple, and preferable numerical value is：65mm, the rotating speed of the motor 6 elect as
1500 revolutions per seconds or 2500 revolutions per seconds, the effect for reducing or even abating the noise can be reached.
The utility model preferred embodiment and embodiment are explained in detail above in conjunction with accompanying drawing, but this
Utility model is not limited to the above-described embodiment and examples, in those skilled in the art's possessed knowledge, may be used also
To make a variety of changes without departing from the concept of the premise utility.
Claims (8)
1. a kind of double air channel noiseless air exhausting devices based on sound wave interference, including be disposed adjacent and synchronize the air channel of air draft
(3) and control synchronous working control device, it is characterised in that each interior center of the air channel (3) is provided with blower fan (6), institute
The inwall for stating air channel (3) is provided with helix groove (7), the rotating cycle of the helix groove (7) at least more than one, the spiral
Wire casing (7) both ends open and middle closed, the air inlet of the air channel (3) is provided with indoor exhaust wind mask (1), the indoor exhaust wind
Mask (1) is provided with mask controlled motor (2), and the other end of the air channel (3) is provided with check (non-return) valve (4), check (non-return) valve (4) outside
Provided with rainhat (5).
2. double air channel noiseless air exhausting devices based on sound wave interference according to claim 1, it is characterised in that the blower fan
(6) flabellum (61) being arranged on arbor (63) is included, the arbor (63) is provided with synchronizer (62) and balancing weight (65), described
Balancing weight (65) is provided with tuningout screw (64).
3. double air channel noiseless air exhausting devices based on sound wave interference according to claim 1, it is characterised in that described in two
Air channel (3) is arranged to be set up in parallel, and the thickness range of the air channel (3) is：5~10mm, diameter range are 95~110mm, institute
The inside diameter ranges for stating air channel (3) are：85~105mm.
4. double air channel noiseless air exhausting devices based on sound wave interference according to claim 3, it is characterised in that described in two
Air channel (3) centre bore is away from the odd number multiple that scope is numerical value in 150~240mm.
5. double air channel noiseless air exhausting devices based on sound wave interference according to claim 1, it is characterised in that the spiral
Wire casing (7) sets air channel (3) inwall between blower fan (6) and mask (1) and close-packed arrays, the helix groove (7) set two
The line of end opening (A, B) and the centerline parallel of pipeline, spacing range 20-80mm, the rotation circle of the helix groove (7)
Number encloses for 1-4, and helix groove (7) length range is 300-1300mm, and helix groove (7) the depth and width scope is
2-3mm。
6. double air channel noiseless air exhausting devices based on sound wave interference according to claim 3 or 4, it is characterised in that described
The wind speed range of air channel (3) inner blower (6) is the meter per second of 0.3 meter per second~1.8.
7. double air channel noiseless air exhausting devices based on sound wave interference according to claim 1, it is characterised in that described in two
Air channel (3) is arranged to that " 8 " font, the thickness range of the air channel (3) are 5~10mm, and diameter value scope is 95~110mm, institute
State the 85~105mm of interior diameter scope in air channel (3), two air channel (3) centre bores away from number range be 150~240mm
The odd number multiple of middle numerical value, the scope rotating speed of the motor is 1000 revolutions per seconds~3000 revolutions per seconds.
8. double air channel noiseless air exhausting devices based on sound wave interference according to claim 1, it is characterised in that the control
Control circuit in device includes the interlock circuit of blower fan (6) synchronous working, adjusts the alignment circuit and phase of blower fan (6) threshold
The bleeder circuit answered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720667775.3U CN206890746U (en) | 2017-06-09 | 2017-06-09 | A kind of double air channel noiseless air exhausting devices based on sound wave interference |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720667775.3U CN206890746U (en) | 2017-06-09 | 2017-06-09 | A kind of double air channel noiseless air exhausting devices based on sound wave interference |
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| Publication Number | Publication Date |
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| CN206890746U true CN206890746U (en) | 2018-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720667775.3U Expired - Fee Related CN206890746U (en) | 2017-06-09 | 2017-06-09 | A kind of double air channel noiseless air exhausting devices based on sound wave interference |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084469A (en) * | 2017-06-09 | 2017-08-22 | 陈宇翔 | A kind of double air channel noiseless air exhausting devices based on sound wave interference |
-
2017
- 2017-06-09 CN CN201720667775.3U patent/CN206890746U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084469A (en) * | 2017-06-09 | 2017-08-22 | 陈宇翔 | A kind of double air channel noiseless air exhausting devices based on sound wave interference |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180116 Termination date: 20190609 |