CN208682828U - A kind of railway vehicle air conditioner pressure fan vibration and noise reducing device - Google Patents
A kind of railway vehicle air conditioner pressure fan vibration and noise reducing device Download PDFInfo
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- CN208682828U CN208682828U CN201821412289.8U CN201821412289U CN208682828U CN 208682828 U CN208682828 U CN 208682828U CN 201821412289 U CN201821412289 U CN 201821412289U CN 208682828 U CN208682828 U CN 208682828U
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- pressure fan
- noise
- air
- railway vehicle
- air conditioner
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Abstract
The utility model discloses a kind of railway vehicle air conditioner pressure fan vibration and noise reducing devices, belong to railway vehicle air conditioner technical field, including being arranged in the intracorporal pressure fan of case, it is characterized by: the spiral case outer surface in the pressure fan is enclosed with acoustical foam board, damper is equipped between the pressure fan and the cabinet.The utility model is incorporated in pressure fan installation place in the sound absorber of pressure fan spiral case appearance wrap aluminium foil and installs damper additional, the noise 0.5-1.5dB (a) at pressure fan air outlet can be generally reduced, while the vibration and noise that pressure fan operating generates can be weakened and transmitted to the car of unit bottom part down；On pressure fan spiral case surface, acoustical foam board may also function as certain insulation effect, and the humid air in evaporator downstream is avoided to generate condensation in volute of blower；It installs the noise elimination wind conduit that a section inner wall posts acoustical foam board additional between pressure fan air outlet and unit blasting air mouth, the noise at air-conditioner set air outlet can be reduced by a relatively large margin, can generally reduce the noise 3-5dB (a) at air outlet.
Description
Technical field
The utility model belongs to railway vehicle air conditioner technical field, and in particular to a kind of railway vehicle air conditioner pressure fan vibration damping
Denoising device.
Background technique
The existing pressure fan noise reduction measure of rail traffic air-conditioner set is very limited, after Fan Selection determines, to vehicle
The control of interior noise effect mainly realizes the optimization of air-flow by interior air delivery duct, and air-conditioner set itself is come
It says, the level of noise of air outlet or relatively high.In recent years, with the raising that user requires interior comfort level, to vehicle
The demand for control of interior noise is also being promoted, so that vehicular manufacturer requires to become to make clear and get over to the control of air-conditioning noise
Come tighter, therefore needs the requirement systematically by end user to interior noise to advance to air-conditioner set side and carry out comprehensive set
Count optimal control.
In the prior art: 1, the pressure fan of rail traffic air-conditioner set generally uses centrifugal, the operation line of draught fan impeller
Speed its at spiral case outmost turns it is higher, in addition the effect of centrifugal force, the air output of major part is close to spiral case
Place's blowout blower, so being the air-supply highest place of noise at spiral case.It is obtained after the frequency spectrum of analysis air-supply noise
Principally fall into high frequency noise.2, rail traffic air conditioning box body is generally made using metal plate, and blanking, welding and riveting etc. cause
Mismachining tolerance and box deformation, after pressure fan is installed on cabinet, the dynamic balancing of blower will receive certain influence, so that wind
Machine vibration noise becomes larger.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of railway vehicle air conditioner pressure fan vibration and noise reducing device, by setting
Acoustical foam board, aluminium foil and damper are set, achievees the purpose that vibration and noise is effectively reduced.
In order to solve the above technical problems, the technical solution adopted in the utility model is: a kind of railway vehicle air conditioner pressure fan
Vibration and noise reducing device, including be arranged in the intracorporal pressure fan of case, it is characterised in that: it is wrapped up in the spiral case outer surface of the pressure fan
There is acoustical foam board, damper is equipped between the pressure fan and the cabinet.
Further, aluminium foil is wrapped in the acoustical foam board.
Further, in the cabinet be equipped with pressure fan mounting base, the pressure fan by the damper with it is described
Pressure fan mounting base is connected.
Further, electric heater and/or evaporator, the outlet air of the pressure fan are equipped in the inlet side of the pressure fan
Side is connected with silencers channel.
Further, air-supply acoustical foam board is equipped in the inner wall of the silencers channel.
The beneficial effects of the utility model are: the sound absorber in pressure fan spiral case appearance wrap aluminium foil is incorporated in pressure fan
Installation place installs damper additional, can generally reduce the noise 0.5-1.5dB (a) at pressure fan air outlet, while can weaken pressure fan
Operate car transmitting of the vibration and noise generated to unit bottom part down；On pressure fan spiral case surface, acoustical foam board can also be risen
To certain insulation effect, the humid air in evaporator downstream is avoided to generate condensation in volute of blower；In pressure fan air outlet and
It installs the noise elimination wind conduit that a section inner wall posts acoustical foam board between unit blasting air mouth additional, air-conditioner set air-supply can be reduced by a relatively large margin
Noise at mouthful, can generally reduce the noise 3-5dB (a) at air outlet.
The utility model is described in detail with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is the main view of the utility model railway vehicle air conditioner pressure fan vibration and noise reducing device；
Fig. 2 is the top view of Fig. 1.
In the accompanying drawings: 1 is silencers channel, and 2 be air-supply acoustical foam board, and 3 be aluminium foil, and 4 be acoustical foam board, and 5 be air-supply
Machine, 6 be electric heater, and 7 be evaporator, and 8 be damper, and 9 be pressure fan mounting base, and 10 be cabinet.
Specific embodiment
Referring to attached Fig. 1 and 2, the utility model provides a kind of railway vehicle air conditioner pressure fan vibration and noise reducing device, including
Pressure fan 5 in cabinet 10 is set, and key is: being enclosed with acoustical foam board 4 in the spiral case outer surface of pressure fan 5, is sending
Damper 8 is equipped between blower 5 and cabinet 10.
Acoustical foam board 4 is pasted onto the spiral case outer surface of pressure fan 5, is mainly used for absorbing high frequency noise, while playing one
Fixed insulation effect avoids the humid air in evaporator downstream when refrigeration from generating at volute of blower (generally metal material) solidifying
Dew.
On the one hand the compressible amount and controllability of damper 8 can absorb installation error, it is bad to pressure fan 5 to reduce installation
Dynamically balanced influence avoids the vibrating noise of pressure fan 5 from becoming larger；It on the other hand can effectively reduce production when pressure fan 5 operates simultaneously
Raw vibration.
Aluminium foil 3 is wrapped in acoustical foam board 4.Specifically, aluminium foil 3 is pasted onto outside acoustical foam board 4, is mainly used for
Acoustical foam board 4 is sealed, avoids it from absorbing moisture mouldy (because pressure fan 5 generally lies in evaporator 7 and electric heater 6
Downstream, relative air humidity when unit freezes near pressure fan is very big, and acoustical foam board 4 is because belonging to leavening structure, meeting
Dust and moisture are adsorbed, the reduction or mouldy of cystosepiment sound absorption qualities is caused；When unit heats, sound-absorbing is steeped in electrically heated heat radiation
There is influence in the service life of foam plate, can accelerate the aging of acoustical foam board)；The heat radiation of electric heater 6 when can reflect heating simultaneously,
The temperature for sound-absorbing foam plate surface when heating of declining to a great extent；And aesthetic appeal can also be played the role of in appearance stickup aluminium foil 3.
Pressure fan mounting base 9 is equipped in cabinet 10, pressure fan 5 is connected by damper 8 with pressure fan mounting base 9.Tool
Body, pressure fan mounting base 9 is arranged on the bottom plate of air conditioning box body 10, and damper 8 is installed on pressure fan 5 and air conditioning box body 10
Assembling at.Assembling seat 9 can reinforce cabinet 10 and reduce deflection.
Electric heater 6 and/or evaporator 7(single cold type air-conditioning products are equipped in pressure fan upstream in the inlet side of pressure fan 5
Only evaporator, single warm type product only have electric heater in pressure fan upstream, and both cooling and heating type air-conditioning products are in the upper of pressure fan
Trip is equipped with evaporator and electric heater), the air side of pressure fan 5 is connected with silencers channel 1.Noise elimination wind conduit 1 is arranged in pressure fan 5
Air outlet and air-conditioner set air outlet between.Stick on 2 pairs of acoustical foam board of one layer of air-supply air-supplies on the inner wall of noise elimination wind conduit 1
Noise is absorbed, and can reduce the noise at air-conditioner set air outlet by a relatively large margin, hence it is evident that weakens the noise of pressure fan 5 along gas
Stream passes through transmitting of the air duct in compartment.
The present invention by above-mentioned three measures (the spiral case outer surface of pressure fan 5 wrap up acoustical foam board 4 and aluminium foil 3,
Damper 8 and pressure fan mounting base 9 and setting noise elimination wind conduit 1 are set and are bonded air-supply sound-absorbing bubble in the inner wall of noise elimination wind conduit 1
Foam plate 2) it is combined together, it can be from the transmitting of the vibration and noise of the comprehensive decrease pressure fan of each pipeline, to 5 shape of pressure fan
Integral vibration and noise reducing can generally reduce noise 3-6dB (a) at air-conditioner set air outlet so that its noise is effectively reduced.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, it should be understood by those ordinary skilled in the art that: still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (5)
1. a kind of railway vehicle air conditioner pressure fan vibration and noise reducing device, special including the pressure fan (5) being arranged in cabinet (10)
Sign is: acoustical foam board (4) is enclosed in the spiral case outer surface of the pressure fan (5), in the pressure fan (5) and the case
Damper (8) are equipped between body (10).
2. railway vehicle air conditioner pressure fan vibration and noise reducing device according to claim 1, it is characterised in that: in the sound-absorbing
Cystosepiment (4) is wrapped with aluminium foil (3).
3. railway vehicle air conditioner pressure fan vibration and noise reducing device according to claim 1, it is characterised in that: in the cabinet
(10) pressure fan mounting base (9) are equipped in, the pressure fan (5) is by the damper (8) and the pressure fan mounting base (9)
It is connected.
4. railway vehicle air conditioner pressure fan vibration and noise reducing device according to claim 1-3, it is characterised in that:
The inlet side of the pressure fan (5) be equipped with electric heater (6) and/or evaporator (7), the air side of the pressure fan (5) with disappear
Sound channel (1) is connected.
5. railway vehicle air conditioner pressure fan vibration and noise reducing device according to claim 4, it is characterised in that: in the noise reduction
The inner wall in channel (1) is equipped with air-supply acoustical foam board (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821412289.8U CN208682828U (en) | 2018-08-30 | 2018-08-30 | A kind of railway vehicle air conditioner pressure fan vibration and noise reducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821412289.8U CN208682828U (en) | 2018-08-30 | 2018-08-30 | A kind of railway vehicle air conditioner pressure fan vibration and noise reducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208682828U true CN208682828U (en) | 2019-04-02 |
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ID=65887402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821412289.8U Active CN208682828U (en) | 2018-08-30 | 2018-08-30 | A kind of railway vehicle air conditioner pressure fan vibration and noise reducing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN208682828U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180328618A1 (en) * | 2017-03-01 | 2018-11-15 | Ice Qube, Inc. | Recessed-mounted air conditioning unit |
-
2018
- 2018-08-30 CN CN201821412289.8U patent/CN208682828U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180328618A1 (en) * | 2017-03-01 | 2018-11-15 | Ice Qube, Inc. | Recessed-mounted air conditioning unit |
| US10895398B2 (en) * | 2017-03-01 | 2021-01-19 | Ice Qube, Inc. | Recessed-mounted air conditioning unit |
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