CN112202274A - Air-cooled motor silencing structure - Google Patents
Air-cooled motor silencing structure Download PDFInfo
- Publication number
- CN112202274A CN112202274A CN202011208509.7A CN202011208509A CN112202274A CN 112202274 A CN112202274 A CN 112202274A CN 202011208509 A CN202011208509 A CN 202011208509A CN 112202274 A CN112202274 A CN 112202274A
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- CN
- China
- Prior art keywords
- air
- sound
- rear cover
- motor
- absorbing
- 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
- 230000030279 gene silencing Effects 0.000 title claims abstract description 12
- 229920000742 Cotton Polymers 0.000 claims abstract description 12
- 238000009423 ventilation Methods 0.000 claims abstract description 12
- 238000010521 absorption reaction Methods 0.000 claims abstract description 7
- 239000011358 absorbing material Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 abstract description 20
- 238000001914 filtration Methods 0.000 abstract description 4
- 239000011148 porous material Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000001743 silencing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention relates to the technical field of noise reduction, in particular to an air-cooled motor noise reduction structure which comprises a front cover, a motor shell and a rear cover, a motor shaft is rotatably connected between the front cover and the rear cover, blades are fixed on the motor shaft, the rear cover is provided with an L-shaped ventilation duct, the air inlet of the L-shaped ventilation channel is positioned on the inner end surface of the rear cover, the middle part of the outer end surface of the rear cover is provided with a counter bore, the air outlet of the L-shaped air duct is connected with the counter bore, the air inlet is embedded with a cross flow plate in a clamping way, the inner wall of the L-shaped air duct is provided with silencing cotton, the counter bore is internally provided with a porous sound absorption material, the sound-absorbing board is fixed through the cover plate, and the sound-absorbing board has the advantages that the sound-absorbing board can achieve an overall excellent sound-absorbing effect by utilizing the acoustic filtering effect of the cross flow board, the inflection sound-blocking effect of the L-shaped ventilation duct, the noise-absorbing effect of the sound-absorbing cotton and the resistive sound-absorbing effect of the porous sound-absorbing material.
Description
Technical Field
The invention relates to the technical field of noise reduction, in particular to an air-cooled motor noise reduction structure.
Background
The motor contains the shell, and the shell inner wall is fixed with the stator, and the shell internal rotation is connected with the motor shaft and fixes the rotor on the motor shaft, and along with the development of technique, the rotational speed and the performance of motor have had great promotion, and it is corresponding with it that the problem of generating heat of motor also more and more outstanding, solve the motor and generate heat and mainly have following forced air cooling and water-cooling two kinds of modes, and the better and structure of air-cooled effect is also comparatively simple, but the problem that appears is that, the noise of motor is also more and more big.
Disclosure of Invention
In order to overcome the defect of high noise of the conventional air-cooled motor, the invention provides a silencing structure of the air-cooled motor.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an air-cooled motor amortization structure, contains protecgulum, motor casing and hou gai, rotate between protecgulum and the hou gai and connect the motor shaft, be fixed with the blade on the motor shaft, the back lid is provided with L type ventiduct, L type ventiduct air intake is located the interior terminal surface of back lid, the outer terminal surface middle part of back lid is provided with the counter bore, L type ventiduct air outlet meets with the counter bore, the card has the cross-flow board in the air intake, type ventiduct inner wall is provided with the amortization cotton, be provided with porous sound absorbing material in the counter bore, and it is fixed through.
According to another embodiment of the present invention, the cross-flow plate further comprises an outer end plate and an inner end plate which are parallel to each other, the outer end plate is provided with a first hole which is linearly and uniformly distributed, the inner end plate is provided with a second hole which is uniformly distributed in advance, and the first hole and the second hole are arranged in a staggered manner. The passing of air current is not influenced, and whether the sound wave can be effectively filtered in a staggered arrangement mode is avoided, so that the noise is reduced.
According to another embodiment of the present invention, further comprising that the noise reduction cotton is waved.
According to another embodiment of the present invention, further comprising the porous sound absorbing material is a honeycomb sound absorbing panel. The honeycomb sound-absorbing plate is distributed with a plurality of pores, and sound energy is absorbed in the pores of the porous material to form a resistive sound-absorbing effect.
According to another embodiment of the present invention, further comprising at least two sets of the L-shaped ventilation ducts. The flow of the air flow is increased, and the heat dissipation effect of the motor is ensured.
According to another embodiment of the invention, further comprising a bearing is arranged at the rotary connection part of the motor shaft and the front cover and the rear cover. The motor is ensured to run lightly and quickly by the rotary support, and the noise is reduced.
The invention has the beneficial effects that the overall excellent noise reduction effect can be achieved by utilizing the acoustic filtering effect of the cross flow plate, the inflection sound resistance effect of the L-shaped ventilation duct, the noise absorption effect of the noise reduction cotton and the resistance noise reduction effect of the porous sound absorption material.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of an L-shaped air duct;
fig. 3 is a schematic structural view of the cross flow plate.
In the figure, the motor comprises a front cover 1, a front cover 2, a motor shell 3, a rear cover 4, a motor shaft 5, blades 6, an L-shaped ventilation channel 6-1, an air inlet 6-2, an air outlet 7, a counter bore 8, a cross flow plate 8-1, an outer end plate 8-2, an inner end plate 8-3, a first hole 8-4, a second hole 9, silencing cotton 10, porous sound absorption materials 11, cover plates 12 and bearings.
Detailed Description
As shown in fig. 1 to 2, which are schematic structural diagrams of the present invention, an air-cooled motor noise reduction structure includes a front cover 1, a motor housing 2, and a rear cover 3, wherein a motor shaft 4 is rotatably connected between the front cover 1 and the rear cover 3, a blade 5 is fixed on the motor shaft 4, the rear cover 3 is provided with an L-shaped air duct 6, an air inlet 6-1 of the L-shaped air duct 6 is located on an inner end surface of the rear cover 3, a counter bore 7 is arranged in the middle of an outer end surface of the rear cover 3, an air outlet 6-2 of the L-shaped air duct 6 is connected with the counter bore 7, a cross flow plate 8 is embedded in the air inlet 6-1, noise reduction cotton 9 is arranged on an inner wall of the L-shaped air duct 6, and a porous sound absorption material 10 is arranged.
In the application, the blades 5 are fixed on the motor shaft 4 inside the motor, the rotation of the blades 5 is driven by the rotation of the motor shaft 4 to generate air flow, and heat inside the motor flows out of the L-shaped air duct 6, the counter bore 7 and the cover plate 11 by the air flow, wherein the air flow firstly passes through the cross flow plate 8 to form acoustic filtering so as to reduce noise, the silencing cotton 9 of the L-shaped air duct 6 plays a role in absorbing noise, and the porous sound absorption material 10 in the counter bore 7 forms a resistive silencing role, so that the high-frequency noise silencing effect is good, and the noise is further reduced; in this application, the acoustic filtering effect of the cross flow plate 8, the inflection sound-blocking effect of the L-shaped ventilation duct 6, the noise-absorbing effect of the silencing cotton 9 and the resistive sound-damping effect of the porous sound-absorbing material 10 can achieve the overall excellent silencing effect.
According to another embodiment of the present invention, the cross flow plate 8 further comprises an outer end plate 8-1 and an inner end plate 8-2 which are parallel to each other, the outer end plate 8-1 is provided with a first hole 8-3 which is linearly and uniformly distributed, the inner end plate 8-2 is provided with a second hole 8-4 which is uniformly distributed in advance, and the first hole 8-3 and the second hole 8-4 are arranged in a staggered manner.
As shown in FIG. 3, the holes formed in the outer end plate 8-1 and the inner end plate 8-2 do not affect the air flow, and the sound waves can be effectively filtered in the mode that the first hole 8-3 and the second hole 8-4 are arranged in a staggered mode, so that the noise is reduced.
According to another embodiment of the present invention, it is further included that the noise reduction cotton 9 is waved.
According to another embodiment of the present invention, it is further included that the porous sound absorbing material 10 is a honeycomb sound absorbing plate. The honeycomb sound-absorbing plate is distributed with a plurality of pores, and sound energy is absorbed in the pores of the porous material to form a resistive sound-absorbing effect.
According to another embodiment of the present invention, it further comprises at least two sets of the L-shaped ventilation ducts 6. The flow of the air flow is increased, and the heat dissipation effect of the motor is ensured.
According to another embodiment of the present invention, it further comprises a bearing 12 disposed at the rotational connection between the motor shaft 4 and the front cover 1 and the rear cover 3. The effect of the rotary support of the motor shaft 4 is achieved, the motor is guaranteed to run lightly, and the noise is reduced.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. An air-cooled motor silencing structure comprises a front cover (1), a motor shell (2) and a rear cover (3), a motor shaft (4) is rotatably connected between the front cover (1) and the rear cover (3), it is characterized in that the motor shaft (4) is fixed with a blade (5), the rear cover (3) is provided with an L-shaped ventilation duct (6), an air inlet (6-1) of the L-shaped ventilation duct (6) is positioned on the inner end surface of the rear cover (3), a counter bore (7) is arranged in the middle of the outer end face of the rear cover (3), an air outlet (6-2) of the L-shaped ventilation channel (6) is connected with the counter bore (7), an offset plate (8) is embedded in the air inlet (6-1), silencing cotton (9) is arranged on the inner wall of the L-shaped ventilation duct (6), and a porous sound absorption material (10) is arranged in the counter bore (7) and is fixed through a cover plate (11).
2. The air-cooled motor silencing structure according to claim 1, wherein the cross flow plate (8) comprises an outer end plate (8-1) and an inner end plate (8-2) which are parallel to each other, the outer end plate (8-1) is provided with a first hole (8-3) which is linearly and uniformly distributed, the inner end plate (8-2) is provided with a second hole (8-4) which is uniformly distributed in advance, and the first hole (8-3) and the second hole (8-4) are arranged in a staggered manner.
3. The noise reduction structure of an air-cooled motor according to claim 1, wherein the noise reduction cotton (9) is wave-shaped.
4. The air-cooled motor sound-deadening structure according to claim 1, wherein the porous sound-absorbing material (10) is a honeycomb sound-deadening sheet.
5. The noise reduction structure of an air-cooled motor according to claim 1, wherein the L-shaped air ducts (6) are at least two groups.
6. The air-cooled motor silencing structure according to claim 1, wherein a bearing (12) is provided at a rotational connection part of the motor shaft (4) with the front cover (1) and the rear cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011208509.7A CN112202274A (en) | 2020-11-03 | 2020-11-03 | Air-cooled motor silencing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011208509.7A CN112202274A (en) | 2020-11-03 | 2020-11-03 | Air-cooled motor silencing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112202274A true CN112202274A (en) | 2021-01-08 |
Family
ID=74034234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011208509.7A Pending CN112202274A (en) | 2020-11-03 | 2020-11-03 | Air-cooled motor silencing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112202274A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780310A (en) * | 2012-08-15 | 2012-11-14 | 中电电机股份有限公司 | Noise reducing cover for air intake of motor cooler |
| CN206917933U (en) * | 2017-04-07 | 2018-01-23 | 冀东海天水泥闻喜有限责任公司 | A kind of cement plant muffler |
| WO2019058350A1 (en) * | 2017-09-25 | 2019-03-28 | York (Wuxi) Air Conditioning And Refrigeration Co., Ltd. | Silencer for a heating, ventilation, and air conditioning system |
| CN210686365U (en) * | 2019-06-12 | 2020-06-05 | 东莞市宏铭通风设备有限公司 | Amortization type tunnel fan |
| CN213879485U (en) * | 2020-11-03 | 2021-08-03 | 常州宝罗电机有限公司 | Air-cooled motor silencing structure |
-
2020
- 2020-11-03 CN CN202011208509.7A patent/CN112202274A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780310A (en) * | 2012-08-15 | 2012-11-14 | 中电电机股份有限公司 | Noise reducing cover for air intake of motor cooler |
| CN206917933U (en) * | 2017-04-07 | 2018-01-23 | 冀东海天水泥闻喜有限责任公司 | A kind of cement plant muffler |
| WO2019058350A1 (en) * | 2017-09-25 | 2019-03-28 | York (Wuxi) Air Conditioning And Refrigeration Co., Ltd. | Silencer for a heating, ventilation, and air conditioning system |
| CN210686365U (en) * | 2019-06-12 | 2020-06-05 | 东莞市宏铭通风设备有限公司 | Amortization type tunnel fan |
| CN213879485U (en) * | 2020-11-03 | 2021-08-03 | 常州宝罗电机有限公司 | Air-cooled motor silencing structure |
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