CN111059054A - Anti formula roots blower air inlet of making an uproar that falls - Google Patents
Anti formula roots blower air inlet of making an uproar that falls Download PDFInfo
- Publication number
- CN111059054A CN111059054A CN201811233032.0A CN201811233032A CN111059054A CN 111059054 A CN111059054 A CN 111059054A CN 201811233032 A CN201811233032 A CN 201811233032A CN 111059054 A CN111059054 A CN 111059054A
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- CN
- China
- Prior art keywords
- air inlet
- diffusion cavity
- circular
- cavity
- roots blower
- 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
- 238000009792 diffusion process Methods 0.000 claims abstract description 28
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
The invention relates to the technical field of Roots blowers, in particular to an anti-noise Roots blower air inlet which comprises a base, an impeller and a casing, wherein a spiral air inlet at the top in the casing is connected with a diffusion cavity, the top of the diffusion cavity is connected with a circular air passage, a diffusion cavity is enclosed in the diffusion cavity, and the diffusion cavity is a gradually contracted circular cavity from the spiral air inlet to the circular air passage. The invention has the beneficial effects that: through increasing a diffusion cavity between circular air flue and spiral air inlet according to the principle of anti formula amortization, the air current gets into the diffusion cavity from circular air flue, and through the sudden expansion of flow area, the velocity of flow reduces, makes the sound wave decay to make the noise of gas further reduce.
Description
Technical Field
The invention relates to the technical field of Roots blowers, in particular to an anti-noise Roots blower air inlet.
Background
The conventional Roots blower air inlet is formed by a structure that a circular air passage is directly connected with a spiral air inlet, and the spiral air inlet is gradually opened theoretically, so that a certain noise reduction effect is achieved, but the noise is still a great harm which puzzles users due to the forced exhaust effect of the Roots blower.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the noise-reducing Roots blower air inlet which is simple in structure and capable of effectively reducing noise.
The technical scheme of the invention is as follows:
the air inlet of the anti-noise Roots blower comprises a base, an impeller and a casing, wherein a spiral air inlet at the top in the casing is connected with a diffusion cavity, the top of the diffusion cavity is connected with a circular air passage, and a diffusion cavity is enclosed in the diffusion cavity.
The diffusion cavity is a gradually contracted circular cavity from the spiral air inlet to the circular air passage.
The technical scheme provided by the invention has the beneficial effects that:
through increasing a diffusion cavity between circular air flue and spiral air inlet according to the principle of anti formula amortization, the air current gets into the diffusion cavity from circular air flue, and through the sudden expansion of flow area, the velocity of flow reduces, makes the sound wave decay to make the noise of gas further reduce.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in figure 1, the anti-noise Roots blower air inlet comprises a base 1, an impeller and a casing 2, wherein a spiral air inlet 3 at the top in the casing 2 is connected with a diffusion cavity 4, the top of the diffusion cavity 4 is connected with a circular air passage 5, and a diffusion cavity is enclosed in the diffusion cavity 4.
The diffusion cavity 2 is a gradually contracted circular cavity from the spiral air inlet 3 to the circular air passage 5.
External air enters the circular air passage 5, and due to the difference of pressure, the flow rate is increased, and the noise is increased; the airflow enters the diffusion cavity 4, and the flow velocity is reduced through the sudden expansion of the flow passage area of the diffusion cavity in the diffusion cavity 4, so that the sound wave is attenuated, and the noise of the gas is further reduced; the gas enters the spiral gas inlet 3 next step, the impeller rotates to the spiral gas inlet 3, the impeller and the spiral gas inlet 3 form a triangular inlet, and the gas inlet channel is gradually opened through the rotation of the impeller, so that the pulsation of the gas is reduced, and the noise is further reduced.
The principle is as follows: the sudden change interface or the side connection resonant cavity on the diffusion cavity 4 is utilized to enable certain frequency sound waves transmitted along the pipeline to generate phenomena of reflection, interference and the like at the sudden change interface, so that the aims of noise elimination and noise reduction are achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (2)
1. The anti-noise Roots blower air inlet comprises a base, an impeller and a casing and is characterized in that a spiral air inlet at the top in the casing is connected with a diffusion cavity, the top of the diffusion cavity is connected with a circular air passage, and a diffusion cavity is enclosed in the diffusion cavity.
2. The intake of an anti-rattle Roots blower according to claim 1, wherein the diffusion chamber is a gradually converging circular chamber from the spiral intake to the circular port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811233032.0A CN111059054A (en) | 2018-10-16 | 2018-10-16 | Anti formula roots blower air inlet of making an uproar that falls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811233032.0A CN111059054A (en) | 2018-10-16 | 2018-10-16 | Anti formula roots blower air inlet of making an uproar that falls |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111059054A true CN111059054A (en) | 2020-04-24 |
Family
ID=70297230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811233032.0A Pending CN111059054A (en) | 2018-10-16 | 2018-10-16 | Anti formula roots blower air inlet of making an uproar that falls |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111059054A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000291401A (en) * | 1999-04-06 | 2000-10-17 | Yoshio Abe | Bulge preventing partition plate and bulge preventing ring for housing of compressor and fluid motor |
| CN102242711A (en) * | 2011-07-05 | 2011-11-16 | 山东省临风鼓风机有限公司 | High-temperature resistant high-pressure-rise type Roots blower |
| CN204140429U (en) * | 2014-08-09 | 2015-02-04 | 长沙华中一鼓风机有限公司 | Roots blower |
| CN204572460U (en) * | 2015-04-15 | 2015-08-19 | 闫璐 | A kind of multistage air cooling Roots pump |
| KR101586330B1 (en) * | 2015-10-06 | 2016-01-19 | (주)한국브로워 | Helical port roots type rotary blower |
-
2018
- 2018-10-16 CN CN201811233032.0A patent/CN111059054A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000291401A (en) * | 1999-04-06 | 2000-10-17 | Yoshio Abe | Bulge preventing partition plate and bulge preventing ring for housing of compressor and fluid motor |
| CN102242711A (en) * | 2011-07-05 | 2011-11-16 | 山东省临风鼓风机有限公司 | High-temperature resistant high-pressure-rise type Roots blower |
| CN204140429U (en) * | 2014-08-09 | 2015-02-04 | 长沙华中一鼓风机有限公司 | Roots blower |
| CN204572460U (en) * | 2015-04-15 | 2015-08-19 | 闫璐 | A kind of multistage air cooling Roots pump |
| KR101586330B1 (en) * | 2015-10-06 | 2016-01-19 | (주)한국브로워 | Helical port roots type rotary blower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200424 |
|
| RJ01 | Rejection of invention patent application after publication |