CN213270383U - Noise reduction ventilator - Google Patents
Noise reduction ventilator Download PDFInfo
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- CN213270383U CN213270383U CN202022047862.3U CN202022047862U CN213270383U CN 213270383 U CN213270383 U CN 213270383U CN 202022047862 U CN202022047862 U CN 202022047862U CN 213270383 U CN213270383 U CN 213270383U
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- inlet pipe
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Abstract
The utility model provides a ventilation blower of making an uproar falls. Relates to the technical field of ventilators. The air inlet pipe is internally connected with a fan, the left side of the air inlet pipe is connected with an air outlet pipe, acoustic boards which are uniformly arranged at intervals are arranged in the air outlet pipe, the fan is provided with a flow guide sleeve, and the flow guide sleeve is streamline in appearance; a grid cylinder is arranged in the air inlet pipe, and silencing cotton is filled in a gap between the grid cylinder and the inner wall of the air inlet pipe. The utility model discloses following beneficial effect has: the air current flows through the surfaces of the streamline-shaped sound-absorbing plate and the air guide sleeve, noise is absorbed, a noise reduction effect is achieved, silencing cotton is filled in a gap between the grid cylinder and the inner wall of the air inlet pipe, vibration sound and air current noise which are generated by a fan and return back are absorbed, the sound-absorbing plate and the air guide sleeve are made of foamed aluminum alloy materials, the foamed aluminum alloy has excellent sound absorption performance, meanwhile, the sound-absorbing plate has strong strength, impact of the air current is resisted, the air outlet area is enlarged by the expansion section, the air current speed is not reduced when the sound-absorbing plate is added into the air outlet pipe, and fan parameters are guaranteed.
Description
The technical field is as follows:
the utility model relates to a ventilation blower technical field, concretely relates to noise reduction ventilation blower.
Background art:
the fan relies on the mechanical energy of input, improve the gas pressure and discharge gaseous machinery, it is a driven fluid machinery, the fan is extensively used for air conditioning equipment, cooling and ventilation in fields such as domestic appliance equipment, fan operation in-process can produce the noise, this is relevant with the rotation of impeller, the impeller is at high speed, under the circumstances of low-load operation, the noise of fan is especially outstanding, current amortization fan mostly sets up sound absorbing material in the fan, through sound absorbing material's sound effect, the effect of noise abatement has been played, this type of fan has following not enough when using at least: the sound absorbing material is single, and the mode of setting up is simple and scientific and reasonable inadequately, has weakened the noise to a certain extent, and noise cancelling effect is obvious inadequately, and prior art generally only carries out amortization to the air outlet, and the partial noise of fan still can pass away through the air intake transmission, and noise cancelling effect is not good.
The utility model has the following contents:
in order to solve the problem, the utility model discloses aim at providing the ventilation blower of making an uproar that falls.
The technical scheme of the utility model is that: the noise reduction ventilator comprises an air inlet pipe, the air inlet pipe is connected with a fan through a support, the left side of the air inlet pipe is connected with an air outlet pipe, sound absorption plates are uniformly arranged at intervals in the air outlet pipe, the sound absorption plates are in a streamline horn shape, a flow guide cover is arranged on the fan on the inner side of the innermost sound absorption plate, and the flow guide cover is in a streamline shape;
a grid cylinder is arranged in the air inlet pipe, and silencing cotton is filled in a gap between the grid cylinder and the inner wall of the air inlet pipe.
The sound absorption plate and the air guide sleeve are made of foam aluminum alloy materials.
The air outlet pipe is provided with an expansion section with an enlarged diameter at the connecting part with the air inlet pipe.
The air outlet pipe is sleeved on the air inlet pipe shell and is spliced together through a screw.
The right side of the air inlet pipe is provided with a filter screen.
The inner wall of the connecting position of the air outlet pipe and the air inlet pipe is stuck with silencing cotton.
The right side of the grid cylinder is provided with a contraction section with a reduced diameter.
The thickness edge of the right plate of the sound-absorbing plate is processed into a sharp angle.
The utility model discloses following beneficial effect has: the air current flows through the surfaces of the streamlined sound-absorbing board and the air guide sleeve, the noise is absorbed, the noise reduction effect is achieved, the gaps between the grid cylinder and the inner wall of the air inlet pipe are filled with silencing cotton, the vibration sound and the air current noise which are generated by the fan and return back are absorbed, the sound-absorbing board and the air guide sleeve are made of foamed aluminum alloy materials, and the foamed aluminum alloy has excellent sound absorption performance (micro through holes and through holes): when the sound wave frequency is between 125 and 4000HZ, the sound absorption coefficient of the through-hole foamed aluminum alloy can reach 0.8 to the maximum, the sound absorption coefficient has stronger strength, the impact of air flow is resisted, the air outlet area is enlarged by the expansion section, the air flow speed is not reduced when the sound absorption plate is added into the air outlet pipe, and the fan parameters are ensured.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1-an air inlet pipe, 2-an air outlet pipe, 3-a fan, 4-a grid cylinder, 5-a contraction section, 6-a filter screen, 7-silencing cotton, 8-a bracket, 9-an expansion section, 10-a sharp corner, 11-an acoustic board and 12-a flow guide cover.
The specific implementation mode is as follows:
the present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1, the noise reduction ventilator comprises an air inlet pipe 1, a fan 3 is connected in the air inlet pipe 1 through a support 8, the left side of the air inlet pipe 1 is connected with an air outlet pipe 2, sound absorption plates 11 are uniformly arranged in the air outlet pipe 2 at intervals, the sound absorption plates 11 are in a streamline trumpet shape, the inner side of the innermost sound absorption plate 11 is provided with a flow guide cover 12 on the fan 3, the flow guide cover 12 is in a streamline shape, the streamline shapes of the sound absorption plates 11 and the flow guide cover 12 can enable outflow airflow to be in a streamline turning mode, the airflow flows through the surfaces of the sound absorption plates 11 and the flow guide cover 12, noise is absorbed, and;
a grid cylinder 4 is installed in the air inlet pipe 1, and silencing cotton 7 is filled in a gap between the grid cylinder 4 and the inner wall of the air inlet pipe 1 to absorb the returned vibration sound and airflow noise generated by the fan 3.
The sound-absorbing plate 11 and the air guide sleeve 12 are made of foamed aluminum alloy materials, and the foamed aluminum alloy has excellent sound absorption performance (micro through holes and through holes): when the sound wave frequency is between 125 and 4000HZ, the sound absorption coefficient of the through-hole foamed aluminum alloy can reach 0.8 to the maximum, and the through-hole foamed aluminum alloy has strong strength and resists the impact of air flow.
An expansion section 9 with an enlarged diameter is arranged at the connecting part of the air outlet pipe 2 and the air inlet pipe 1, the air outlet area of the expansion section 9 is enlarged, the air speed is not reduced when the sound absorption plate 11 is added into the air outlet pipe 2, and the fan parameters are ensured.
The air outlet pipe 2 is sleeved on the shell of the air inlet pipe 1 and is spliced together through a screw, and the air outlet pipe 2 can be conveniently disassembled to maintain and clean the fan.
The right side of air-supply line 1 is equipped with filter screen 6 and can filters the impurity in the outside air, prevents that this part impurity from adsorbing on the cellular surface of amortization cotton and foam aluminum alloy material, reduces the sound absorbing area, causes the noise reduction effect to descend.
The inner wall of the connecting position of the air outlet pipe 2 and the air inlet pipe 1 is adhered with silencing cotton 7 so as to prevent the air flow from suddenly changing direction to generate noise, and simultaneously absorb the noise of the passing air flow and improve the noise reduction effect.
The right side of the grid cylinder 4 is provided with a contraction section 5 with the diameter being reduced, the vibration sound and the airflow noise which are generated by the fan 3 and return back pass through the contraction section 5 with the diameter being reduced, and the silencing cotton 7 on the conical surface of the contraction section 5 can absorb the vibration and the noise, so that the noise reduction effect is further improved.
The thickness edge of the right plate of the sound-absorbing plate 11 is processed into a sharp angle 10, which is beneficial to smooth air flow.
Claims (8)
1. The utility model provides a ventilation blower of making an uproar falls, includes air-supply line (1), its characterized in that: the air inlet pipe (1) is internally connected with a fan (3) through a support (8), the left side of the air inlet pipe (1) is connected with an air outlet pipe (2), sound-absorbing boards (11) which are uniformly arranged at intervals are arranged in the air outlet pipe (2), the sound-absorbing boards (11) are in a streamline horn shape, the inner side of the innermost sound-absorbing board (11) is provided with a flow guide cover (12) on the fan (3), and the flow guide cover (12) is in a streamline shape;
a grid cylinder (4) is arranged in the air inlet pipe (1), and a gap between the grid cylinder (4) and the inner wall of the air inlet pipe (1) is filled with silencing cotton (7).
2. A noise reducing ventilator according to claim 1 wherein: the sound absorption plate (11) and the air guide sleeve (12) are both made of foamed aluminum alloy materials.
3. A noise reducing ventilator according to claim 1 wherein: the connection part of the air outlet pipe (2) and the air inlet pipe (1) is provided with an expansion section (9) with an enlarged diameter.
4. A noise reducing ventilator according to claim 1 wherein: the air outlet pipe (2) is sleeved on the shell of the air inlet pipe (1) and is spliced together through screws.
5. A noise reducing ventilator according to claim 1 wherein: a filter screen (6) is arranged on the right side of the air inlet pipe (1).
6. A noise reducing ventilator according to claim 1 wherein: the inner wall of the connecting position of the air outlet pipe (2) and the air inlet pipe (1) is stuck with silencing cotton (7).
7. A noise reducing ventilator according to claim 1 wherein: the right side of the grid cylinder (4) is provided with a contraction section (5) with a diameter which is reduced.
8. A noise reducing ventilator according to claim 1 wherein: the thickness edge of the right plate of the sound absorption plate (11) is processed into a sharp corner (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022047862.3U CN213270383U (en) | 2020-09-17 | 2020-09-17 | Noise reduction ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022047862.3U CN213270383U (en) | 2020-09-17 | 2020-09-17 | Noise reduction ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213270383U true CN213270383U (en) | 2021-05-25 |
Family
ID=75943068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022047862.3U Active CN213270383U (en) | 2020-09-17 | 2020-09-17 | Noise reduction ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213270383U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113623251A (en) * | 2021-08-30 | 2021-11-09 | 苏州浪潮智能科技有限公司 | Pneumatic noise elimination device and noise elimination fan |
| CN114233515A (en) * | 2021-12-16 | 2022-03-25 | 浙江云途飞行器技术有限公司 | Fan engine with noise reduction function |
-
2020
- 2020-09-17 CN CN202022047862.3U patent/CN213270383U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113623251A (en) * | 2021-08-30 | 2021-11-09 | 苏州浪潮智能科技有限公司 | Pneumatic noise elimination device and noise elimination fan |
| CN114233515A (en) * | 2021-12-16 | 2022-03-25 | 浙江云途飞行器技术有限公司 | Fan engine with noise reduction function |
| CN114233515B (en) * | 2021-12-16 | 2023-10-03 | 浙江云途飞行器技术有限公司 | Fan engine with noise reduction function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220623 Address after: 154004 Zhonghua community, Qianjin District, Jiamusi City, Heilongjiang Province Patentee after: Jiamusi Xinda general fan Co.,Ltd. Address before: 154004 middle section of Youyi Road, Jiamusi suburb, Heilongjiang Province Patentee before: Jiamusi suburb Jinde ventilation equipment factory |