CN106593961A - Silencer and air conditioner with same - Google Patents
Silencer and air conditioner with same Download PDFInfo
- Publication number
- CN106593961A CN106593961A CN201710000405.9A CN201710000405A CN106593961A CN 106593961 A CN106593961 A CN 106593961A CN 201710000405 A CN201710000405 A CN 201710000405A CN 106593961 A CN106593961 A CN 106593961A
- Authority
- CN
- China
- Prior art keywords
- deafener
- air
- vent board
- slide plate
- silencer
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/245—Means for preventing or suppressing noise using resonance
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a silencer. The silencer comprises a box of which one end is open. A sliding plate is arranged in the box and is in sliding fit in the box, and the side wall is in air seal with the inner wall of the box. A vent board is arranged on the side wall, opposite to the sliding plate, of the box. An air cavity is formed between the vent board and the sliding plate. The cavity depth length of the air cavity of the silencer is changed by moving the sliding plate, thus the resonant frequency is changed, the silencing frequency region of the silencer is wider, and the universality is higher. The invention further provides an air conditioner with the silencer. The air conditioner comprises a centrifugal fan and a volute. The centrifugal fan is installed in the volute. The end, provided with the vent board, of the silencer is connected with a volute tongue of the volute. The air cavity of the silencer communicates with an inner cavity of the volute. The centrifugal fan generates the largest noise at the volute tongue, so that the silencer is installed at the volute tongue, the silencing effect of the air conditioner is better, and the noise reduction rate is high.
Description
Technical field
The present invention relates to deafener and air-conditioning technical field, and in particular to a kind of deafener and the air-conditioning with it.
Background technology
Modern society people rhythm of life is accelerated, and the length of one's sleep is reduced, thus sleep quality is increasingly closed by people
Note, and noise is a key factor for affecting sleep quality, various household electrical appliance more or less can all produce noise, especially
Domestic air conditioning.When air-conditioning is chosen, tonequality also becomes one and important chooses index.And the rotating speed of centrifugal blower is to affect system
Key factor that is cold or heating, especially in vile weather, needs larger rotating speed to ensure that air-conditioning offer more meets user's need
The function of asking, but the rotating speed of centrifugal blower is bigger, and the noise peak of generation is higher, and noise is bigger.In order to not affect centrifugation
In the case of the selection of speed of blower fan, although occurred in that the air-conditioning with deafener, but this kind of deafener is typically mounted at
The air inlet or air outlet of centrifugal blower, and the volume of existing deafener air chamber is fixed can only to eliminate specific a certain
Noise in inter-cell frequency, it is impossible to further reached according to the different rotational speed regulation deafener of blower fan and eliminate different noise peaks
Effect, deafener versatility is relatively low, and the erasure effect of air-conditioning is general, and noise reduction rate is low.It has been investigated that, the snail tongue portion of centrifugal blower
Part produce aerodynamic noise, be the main source of centrifugal blower noise, thus how to reduce at snail tongue produce noise into
For problem in the urgent need to address at present.
The content of the invention
The invention provides a kind of good muffling effect, a kind of deafener and the air-conditioning with it of highly versatile.
The technical solution adopted in the present invention is：A kind of deafener, including the box body of an one end open, described box body
Inside is provided with slide plate, and the slide plate slides coordinate in described box body and hermetic seal between side wall and inboard wall of cartridge, the box
The body side wall relative with slide plate is provided with vent board, and between the vent board and the slide plate air chamber is formed.
After designing using more than, the present invention has compared with prior art advantages below：
Change the chamber deep length of the air chamber of deafener by moving slide board, and then change resonant frequency so that deafener
Noise reduction frequency separation is wider, and versatility is higher.
Used as improvement, the vent board is provided with multiple through holes, when air-flow passes through vent board, will be identical with vent board frequency
Noise peak heat energy is converted into by resonance effect and rubbing action so that noise reduce.
Used as improvement, the lateral wall edge of the slide plate is connected with pull bar.Described pull bar drives described slide plate along box
The movement of body length direction changes the chamber deep length of described air chamber, easy to operate, is easy to adjust the chamber deep length of deafener.
As improvement, the slide plate be flexible board, the better tightness between slide plate and inboard wall of cartridge.
Another kind of technical scheme of the present invention is：A kind of air-conditioning with deafener, including centrifugal blower, snail
Shell, the centrifugal blower is arranged on inside spiral case, and described deafener is provided with one end of vent board and is connected at the snail tongue of spiral case,
The air chamber of the deafener and spiral case intracavity inter-connection.
After designing using more than, the present invention has compared with prior art advantages below：
The noise that centrifugal blower is produced at snail tongue is maximum, therefore deafener is arranged at snail tongue, further according to centrifugation wind
The different rotating speed moving slide board of machine changes the chamber deep length of air chamber, is easy to general user correctly to adjust deafener, while noise reduction
The noise reduction frequency separation width of device, highly versatile, more preferably, noise reduction rate is high for the erasure effect of air-conditioning.
As improvement, through hole is provided with the snail tongue of the spiral case, the edge of the vent board is engaged with hole wall, with ventilation
Plate replaces described snail tongue, reduces air flow path, allows air-flow directly to carry out noise reduction, erasure effect into deafener from vent board
It is more notable.
Used as improvement, the cross section of the vent board is circular arc, advantageously reduces air-flow into resistance during vent board.
As improvement, the cross-sectional geometry of the cross-sectional geometry of the vent board of the deafener and the snail tongue
Identical, gas-flow resistance is lower, prevents air flow direction deafener outside, erasure effect from further enhancing.
As improvement, the deafener and the removable connection of spiral case.Existing air conditioner structure will not be changed, be easy to air-conditioning
Newly-increased deafener, simultaneously because there is impurity in air, after deafener is using a period of time, the air intracavity of deafener and logical
Dust impurity can be accumulated in hole, because the diameter of through hole is typically small, dust impurity can not only affect the effective straight of through hole ventilation
Footpath is also possible to that through hole, and then the erasure effect of reduction deafener can be blocked, and deafener and snail tongue are removable connection, are easy to use
Deafener is disassembled cleaning dust impurity by family.
Description of the drawings
Fig. 1 is the axonometric chart of deafener
Fig. 2 is the front view of deafener
Fig. 3 is the schematic diagram that deafener is arranged at snail tongue
Shown in figure：1st, spiral case, 1.1, snail tongue, 2, centrifugal blower, 3, box body, 3.1, vent board, 3.2, slide plate, 3.3, draw
Bar, 3.4, through hole, 4, air current flow direction, D, chamber deep length, b, pitch of holes, d, aperture, t, box body thickness of slab.
Specific embodiment
As shown in Figure 1 and Figure 2, described deafener is the box body 3 of one end open, and described tray interior is provided with slide plate
3.2, the slide plate 3.2 is slidably fitted in box body 3, and slide plate 3.2 slides along the length direction of box body, the box body 3 and slide plate
3.2 relative side walls are provided with vent board 3.1, and between the vent board 3.1 and the slide plate 3.2 air chamber is formed.By
Moving slide board 3.2 changes chamber deep length D to realize changing the resonant frequency of vent board and noise on the length direction of box body 3.
The vent board is provided with multiple through holes 3.4, and the through hole is uniformly distributed and between through hole 3.4 adjacent two-by-two
Pitch of holes b is equal.The lateral wall of the slide plate is provided with pull bar 3.3, and described pull bar 3.3 is vertical with slide plate 3.2 and is fixed on
Sealing is needed between the middle part of slide plate 3.2, described slide plate and described inboard wall of cartridge, when slide plate is non-flexible material, can
Hermetic seal is realized to arrange sealing strip between slide plate and inboard wall of cartridge, the sealing strip can be connected to one with inboard wall of cartridge
Rise, it is also possible to link together with slide plate；When described slide plate is flexible material, can be by described slide plate and pull bar one
Molding is manufactured, and described flexible material can be rubber, need interference to match somebody with somebody between the slide plate and inboard wall of cartridge of flexible material making
Close, such gas tightness is more preferable.When pull bar pulls out slide plate, chamber deep length D increase, resonant frequency is reduced, and is inwardly promoted and is slided
During plate, chamber deep length D reduces, resonant frequency increase.Through hole on vent board defines a resistance when resonating with gas current friction
Buddhist nun's film, only the air-flow of the characteristic frequency of elimination in need could be through through hole, different chamber deep length D correspondence elimination different frequencies
Noise peak.
As shown in figure 3, a kind of air-conditioning with deafener, including centrifugal blower 2, spiral case 1, centrifugal blower 2 is installed in snail
The inside of shell 1, deafener is provided with one end of vent board 3.1 and is connected at the snail tongue 1.1 of spiral case, the air chamber of the deafener with
Spiral case intracavity inter-connection.Air-flow along the inwall of spiral case 1 flow along clockwise direction when, can get muddled and flow at snail tongue 1.1
It is dynamic to separate, vortex phenomenon is produced, while pressure, speed are larger at snail tongue 1.1, cause the air-flow relatively mixed and disorderly and tubulence energy at snail tongue
It is larger, therefore air-flow herein can produce the motion and collision of fierceness, and then produce noise.
The first embodiment of the present invention, in the outside of the snail tongue 1.1 deafener is provided with, and the deafener is fixed on snail
On shell, it is equal to be provided with the distance between evenly distributed through hole 3.4, through hole 3.4 adjacent two-by-two b on vent board 3.1, described
The cross section of vent board is arc, and the vent board 3.1 of further described deafener is identical with the geometry of snail tongue 1.1 and abuts
Snail tongue 1.1, is provided with corresponding through hole at described snail tongue, air-flow from spiral case inner chamber stream to snail tongue at through hole in, then lead to
The through hole 3.4 crossed on the vent board 3.1 of deafener enters the air chamber of deafener tray interior, when air-flow passes through vent board, will
Heat energy is converted into by resonance effect and rubbing action with vent board frequency identical noise peak, so that noise reduces, then
By the position for changing described slide plate, the noise of different frequency peak value is reduced.
Second embodiment of the present invention, is provided with through hole at the snail tongue 1.1 of the spiral case, the edge of the vent board with
Hole wall is engaged, will the deafener end be arranged on spiral case on, the snail tongue, the ventilation are replaced with the vent board
Edges of boards edge is stitched together with spiral case edge.Now the vent board of deafener replaces the snail tongue part of centrifugal blower, further carries
The high effect of noise reduction, while deafener is removable connection with spiral case 1, is easy to subsequent user to clean the internal dust of deafener 3
Impurity.
Such as Fig. 1, Fig. 2, shown in Fig. 3.In the deafener described in production and processing, noise reduction is determined according to the size of snail tongue 1.1
The shape and various parameters of the vent board 3.1 of device 3.
The parameter of deafener, concrete calculation procedure is as follows：
According to the theory with regard to porous plate acoustic adsorption device of Ma Dayou, when sound wave incident is to microperforated panel：
ω=2 π f0
P=78.5d2/b2
Wherein, α is acoustic absorptivity, and γ is relative acoustic resistance, and m is relative acoustic mass, ω for centrifugal blower rotating speed, f0It is common
Vibration frequency, ω is minimum frequency absorption band, and t is box body thickness of slab, and D is chamber deep length, and C is the velocity of sound, and ctg is arctan function, and d is
Aperture, p is punching rate, and b is holes center of circle distance, and π is pi.
When resonance is produced, the gas column in vent board is maximum with the friction of hole wall, and α is maximum.
Can be calculated according to the noise peak frequency and above-mentioned formula of centrifugal blower 1 determine the thickness of slab t of box body, chamber deep length D,
Aperture d, the holes center of circle of through hole 3.4 is apart from the design parameter value such as b and punching rate p.In view of the restriction and operation of machining accuracy
Simplicity, in conjunction with practical experience, typically take the method that ultimate value substitutes into amendment to determine each seed ginseng of deafener in production
Number.
The air chamber of deafener is a cuboid, and its horizontal longest dimension is equal to the width of volute of blower, due to snail tongue
It is made up of the thick bending plates of 1.2mm, the box body thickness t of deafener takes 1.2mm, according to the spectral characteristics of noise of centrifugal blower,
With noise peak 200Hz as resonant frequency fo, aperture takes 1mm, and pitch of holes takes 6mm, when chamber deep length takes 100mm, by movement
The pull bar of slide plate lower end changes chamber deep length D of deafener and adjusts deafener sound absorption efficiency.Result of the test represents, chamber deep length
Fan noise total value is maximum during 110mm reduces 1.2dB, noise reduction rate 2.42%.
Following chart is the noise reduction rate laboratory reference data under centrifugal blower different rotating speeds：
Above example only to illustrate technical scheme, rather than a limitation.Although with reference to the foregoing embodiments
The present invention has been described in detail, it will be understood by those within the art that, it still can be to aforesaid enforcement
Technical scheme described in example is modified, or equivalent is carried out to wherein each several part technical characteristic, and these modifications or
Person replaces, and does not make the scope of the essence disengaging embodiment of the present invention technical scheme of appropriate technical solution.
Claims (9)
1. a kind of box body (3) of deafener, an including one end open, it is characterised in that：Slide plate is provided with inside the box body (3)
(3.2), the slide plate (3.2) is slidably fitted in described box body (3) and hermetic seal between side wall and inboard wall of cartridge, the box
Body (3) the side wall relative with slide plate (3.2) is provided with vent board (3.1), the vent board (3.1) and the slide plate (3.2) it
Between form air chamber.
2. a kind of deafener according to claim 1, it is characterised in that：The vent board is provided with multiple through holes (3.4).
3. a kind of deafener according to claim 1, it is characterised in that：Pull bar is connected with the lateral wall of the slide plate
(3.3)。
4. a kind of deafener according to claim 1, it is characterised in that：The slide plate is flexible board.
5. a kind of air-conditioning of the deafener with described in any one of Claims 1-4, including centrifugal blower (2), spiral case (1), institute
State centrifugal blower (2) internal installed in spiral case (1), it is characterised in that：Described deafener is provided with one end of vent board (3.1) and connects
It is connected on snail tongue (1.1) place of spiral case, air chamber and the spiral case intracavity inter-connection of the deafener.
6. air-conditioning according to claim 5, it is characterised in that：Snail tongue (1.1) place of the spiral case is provided with through hole, described logical
The edge of gas plate (3.1) is engaged with hole wall.
7. air-conditioning according to claim 6, it is characterised in that：The cross section of the vent board (3.1) of the deafener is arc
Shape.
8. air-conditioning according to claim 7, it is characterised in that：The cross section geometry of the vent board (3.1) of the deafener
Shape is identical with the cross-sectional geometry of the snail tongue (1.1).
9. air-conditioning according to claim 6, it is characterised in that：The deafener and the removable connection of spiral case (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710000405.9A CN106593961A (en) | 2017-01-03 | 2017-01-03 | Silencer and air conditioner with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710000405.9A CN106593961A (en) | 2017-01-03 | 2017-01-03 | Silencer and air conditioner with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106593961A true CN106593961A (en) | 2017-04-26 |
Family
ID=58582314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710000405.9A Pending CN106593961A (en) | 2017-01-03 | 2017-01-03 | Silencer and air conditioner with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106593961A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965896A (en) * | 2017-12-26 | 2018-04-27 | 海信（广东）空调有限公司 | Volute tongue, air-duct apparatus and indoor apparatus of air conditioner |
| CN108006763A (en) * | 2017-07-03 | 2018-05-08 | 宁波方太厨具有限公司 | A kind of automatically cleaning range hood |
| CN108240353A (en) * | 2017-12-27 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of wind turbine noise reduction spiral tougue |
| CN109247865A (en) * | 2017-07-14 | 2019-01-22 | 美的集团股份有限公司 | Dust catcher and its motor mould group |
| CN110439860A (en) * | 2018-05-04 | 2019-11-12 | 宁波方太厨具有限公司 | A kind of volute structure of centrifugal blower |
| CN110439861A (en) * | 2018-05-04 | 2019-11-12 | 宁波方太厨具有限公司 | A kind of volute structure of centrifugal blower |
| CN110439862A (en) * | 2018-05-04 | 2019-11-12 | 宁波方太厨具有限公司 | A kind of volute structure of centrifugal blower |
| CN114962335A (en) * | 2021-11-30 | 2022-08-30 | Tcl空调器(中山)有限公司 | Volute structure, air duct component and air conditioner |
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| CN201724362U (en) * | 2010-06-30 | 2011-01-26 | 广东美的电器股份有限公司 | Inverter air conditioner silencer |
| CN102434337A (en) * | 2011-09-28 | 2012-05-02 | 奇瑞汽车股份有限公司 | Resonance silencer with dynamically adjusted silencing frequency |
| CN203083101U (en) * | 2012-12-22 | 2013-07-24 | 南昌中昊机械有限公司 | Silencer of variable-frequency air conditioner |
| CN203454371U (en) * | 2013-08-29 | 2014-02-26 | 广东美的制冷设备有限公司 | Low-noise air conditioner indoor cabinet unit |
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| CN106014720A (en) * | 2016-06-27 | 2016-10-12 | 江苏科技大学 | Air-intake compound silencer for automatic frequency-adjustment turbocharger and silencing method for air-intake compound silencer |
| CN206377072U (en) * | 2017-01-03 | 2017-08-04 | 奥克斯空调股份有限公司 | A kind of muffler and the air-conditioning with it |
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| CN201724362U (en) * | 2010-06-30 | 2011-01-26 | 广东美的电器股份有限公司 | Inverter air conditioner silencer |
| CN102434337A (en) * | 2011-09-28 | 2012-05-02 | 奇瑞汽车股份有限公司 | Resonance silencer with dynamically adjusted silencing frequency |
| WO2014084586A1 (en) * | 2012-11-27 | 2014-06-05 | (주)휘일 | Muffler for air conditioner |
| CN203083101U (en) * | 2012-12-22 | 2013-07-24 | 南昌中昊机械有限公司 | Silencer of variable-frequency air conditioner |
| CN203454371U (en) * | 2013-08-29 | 2014-02-26 | 广东美的制冷设备有限公司 | Low-noise air conditioner indoor cabinet unit |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006763A (en) * | 2017-07-03 | 2018-05-08 | 宁波方太厨具有限公司 | A kind of automatically cleaning range hood |
| CN108006763B (en) * | 2017-07-03 | 2024-02-20 | 宁波方太厨具有限公司 | Self-cleaning range hood |
| CN109247865A (en) * | 2017-07-14 | 2019-01-22 | 美的集团股份有限公司 | Dust catcher and its motor mould group |
| CN107965896A (en) * | 2017-12-26 | 2018-04-27 | 海信（广东）空调有限公司 | Volute tongue, air-duct apparatus and indoor apparatus of air conditioner |
| CN108240353A (en) * | 2017-12-27 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of wind turbine noise reduction spiral tougue |
| WO2019127613A1 (en) * | 2017-12-27 | 2019-07-04 | 宁波方太厨具有限公司 | Noise-reduction volute tongue of fan |
| CN108240353B (en) * | 2017-12-27 | 2024-03-29 | 宁波方太厨具有限公司 | Noise-reducing volute tongue of fan |
| CN110439860A (en) * | 2018-05-04 | 2019-11-12 | 宁波方太厨具有限公司 | A kind of volute structure of centrifugal blower |
| CN110439861A (en) * | 2018-05-04 | 2019-11-12 | 宁波方太厨具有限公司 | A kind of volute structure of centrifugal blower |
| CN110439862A (en) * | 2018-05-04 | 2019-11-12 | 宁波方太厨具有限公司 | A kind of volute structure of centrifugal blower |
| CN114962335A (en) * | 2021-11-30 | 2022-08-30 | Tcl空调器(中山)有限公司 | Volute structure, air duct component and air conditioner |
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Application publication date: 20170426 |