CN213879485U - Air-cooled motor silencing structure - Google Patents
Air-cooled motor silencing structure Download PDFInfo
- Publication number
- CN213879485U CN213879485U CN202022500830.4U CN202022500830U CN213879485U CN 213879485 U CN213879485 U CN 213879485U CN 202022500830 U CN202022500830 U CN 202022500830U CN 213879485 U CN213879485 U CN 213879485U
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- air
- rear cover
- motor
- counter bore
- shaped
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Abstract
The utility model 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, and fixed through the apron, the beneficial effects of the utility model are that, utilize the acoustic filtering effect of cross flow board, the inflection of L type ventiduct to hinder the acoustic effect, the cotton noise absorption effect of amortization and porous sound absorbing material's hindering nature noise elimination, can reach whole excellent noise cancelling effect.
Description
Technical Field
The utility model belongs to the technical field of the amortization technique and specifically relates to an air-cooled motor amortization 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.
SUMMERY OF THE UTILITY MODEL
In order to overcome the big not enough of current air-cooled motor noise, the utility model provides an air-cooled motor sound attenuation structure.
The utility model provides a technical scheme that its technical problem adopted is: 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 the apron.
According to the utility model discloses a further embodiment, further include, the cross-flow board contains outer end plate and interior end plate that are parallel to each other, outer end plate is provided with the hole one of linear equipartition, interior end plate is provided with the hole two of equipartition in advance, hole one and hole two dislocation arrangement. 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, the noise reduction cotton is wavy.
According to another embodiment of the present invention, further comprising, the porous sound absorbing material is a honeycomb sound absorbing sheet. 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, the L-shaped ventilation ducts are at least two sets. The flow of the air flow is increased, and the heat dissipation effect of the motor is ensured.
According to the utility model discloses a further embodiment, further include, the motor shaft is provided with the bearing with protecgulum and back lid rotation junction. The motor is ensured to run lightly and quickly by the rotary support, and the noise is reduced.
The beneficial effects of the utility model are that, utilize the inflection of the acoustic filtering effect of cross flow board, L type ventiduct to hinder the acoustic action, the cotton noise absorption effect of amortization and porous sound absorbing material's hindering nature noise elimination, can reach whole excellent noise cancelling effect.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram 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
Fig. 1 to 2 are the structural schematic diagrams of the utility model, an air-cooled motor sound attenuation structure contains protecgulum 1, motor casing 2 and hou gai 3, rotate between protecgulum 1 and the hou gai 3 and connect motor shaft 4, be fixed with blade 5 on the motor shaft 4, back lid 3 is provided with L type ventiduct 6, 6 air intake 6-1 of L type ventiduct is located the interior terminal surface of back lid 3, the terminal surface middle part is provided with counter bore 7 outside the back lid 3, 6 air outlet 6-2 of L type ventiduct meets with counter bore 7, the card has cross-flow board 8 in the air intake 6-1, 6 inner walls of L type ventiduct are provided with amortization cotton 9, be provided with porous sound absorbing material 10 in the counter bore 7, and fix through apron 11.
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, further comprising that 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.
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, further comprising that the silencing cotton 9 is wave-shaped.
According to another embodiment of the present invention, it further comprises 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, further comprising, the L-shaped air ducts 6 are at least two sets. 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, further comprising, the motor shaft 4 is provided with a bearing 12 at the rotational connection with 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 |
---|---|---|---|
CN202022500830.4U CN213879485U (en) | 2020-11-03 | 2020-11-03 | Air-cooled motor silencing structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202022500830.4U CN213879485U (en) | 2020-11-03 | 2020-11-03 | Air-cooled motor silencing structure |
Publications (1)
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CN213879485U true CN213879485U (en) | 2021-08-03 |
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CN202022500830.4U Expired - Fee Related CN213879485U (en) | 2020-11-03 | 2020-11-03 | Air-cooled motor silencing structure |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112202274A (en) * | 2020-11-03 | 2021-01-08 | 常州宝罗电机有限公司 | Air-cooled motor silencing structure |
-
2020
- 2020-11-03 CN CN202022500830.4U patent/CN213879485U/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112202274A (en) * | 2020-11-03 | 2021-01-08 | 常州宝罗电机有限公司 | Air-cooled motor silencing structure |
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210803 Termination date: 20211103 |
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CF01 | Termination of patent right due to non-payment of annual fee |