CN204003470U - A kind of novel three leaf Roots air blower rotors - Google Patents
A kind of novel three leaf Roots air blower rotors Download PDFInfo
- Publication number
- CN204003470U CN204003470U CN201420385824.0U CN201420385824U CN204003470U CN 204003470 U CN204003470 U CN 204003470U CN 201420385824 U CN201420385824 U CN 201420385824U CN 204003470 U CN204003470 U CN 204003470U
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- Prior art keywords
- impeller
- convex arc
- circular cambered
- concaved circular
- cambered surface
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- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 238000005755 formation reaction Methods 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model discloses a kind of novel three leaf Roots air blower rotors, the rotor body that comprises three impeller teeth formations that are evenly arranged, described impeller tooth is symmetric profile, described impeller tooth top portion is that a connection is faced directly, connect to face directly with the first convex arc surface, second convex arc surface of impeller flank portion and be linked in sequence successively, impeller tooth waist is the first concaved circular cambered surface and the second concaved circular cambered surface connecting in order, and the first concaved circular cambered surface of impeller tooth waist is connected with the second convex arc surface of impeller flank portion through involute face.The utility model three leaf Roots air blower rotor convex arc surface and concaved circular cambered surface structure adopt two sections of designed arc-shaped appearances, and impeller shape is smooth, and engagement is level and smooth, and meshing performance is strong, and matching gap is minimum, causes leakage rate little, and blower fan overall volume efficiency is high; Its outer diameter D and the ratio D/A=1.6063 that is arranged on two intermeshing impeller centre distance A in casing, improved area utilization factor, and volumetric efficiency test reaches more than 85%.
Description
Technical field
The utility model relates to a kind of roots blower rotor, is specifically related to a kind of novel three leaf Roots air blower rotors.
Background technique
Domestic Roots air blower molded line generally adopts circular arc profile, Involute Blade Pattern or cycloid blade profile at present, in application process, often due to the problem of rotor structure own, there will be blast volume little, noise is high, the problems such as bearing operation temperature height, have so greatly affected life-span and the current requirement for ecological, environmental protective of blower, thereby have greatly limited application and the output of blower.The quality of Roots air blower Profile Design is all vital factor for the performance of impeller and even blower, and the quality of impeller profile design will fundamentally affect the performance of whole blower,
Summary of the invention
The purpose of this utility model is to provide a kind of novel three leaf Roots air blower rotors, is conducive to increase actual volume, improves capacity utilization, improves blower flow, produces as far as possible little noise.
The purpose of this utility model is achieved through the following technical solutions:
A kind of novel three leaf Roots air blower rotors, the rotor body that comprises three impeller teeth formations that are evenly arranged, described impeller tooth is symmetric profile, described impeller tooth top portion is that a connection is faced directly, connect to face directly with the first convex arc surface, second convex arc surface of impeller flank portion and be linked in sequence successively, impeller tooth waist is the first concaved circular cambered surface and the second concaved circular cambered surface connecting in order, and the first concaved circular cambered surface of impeller tooth waist is connected with the second convex arc surface of impeller flank portion through involute face.
The radius of the first described concaved circular cambered surface is 31.2:30 with the ratio of the radius of the second concaved circular cambered surface; The radius of the first described convex arc surface is 23.02:56.35 with the ratio of the radius of the second convex arc surface.
In Roots blower, on 2 parallel axles, be respectively equipped with 1 vane rotor of the present utility model, the convex arc surface of one of them vane rotor coordinates but does not contact with the concaved circular cambered surface of another vane rotor.
Compared to the prior art, the beneficial effects of the utility model:
The utility model three leaf Roots air blower rotor design science, noise is low, efficiency is high, energy-conservation; Convex arc surface and one section of arc surface design of the general employing of concaved circular cambered surface structure with respect to existing vane rotor, the utility model vane rotor convex arc surface and concaved circular cambered surface structure adopt two sections of designed arc-shaped appearances, impeller shape is smooth, engagement is level and smooth, meshing performance is strong, matching gap is minimum, causes leakage rate little, and blower fan overall volume efficiency is high; The utility model three leaf Roots air blower rotors have good air-flow obturation effect, there is rational span ratio, its outer diameter D and the ratio D/A=1.6063 that is arranged on two intermeshing impeller centre distance A in casing, improved area utilization factor, increased actual volume, be conducive to improve volumetric efficiency, volumetric efficiency test reaches more than 85%; Improve blower flow, produce as far as possible little noise.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In Fig. 1,1-rotor body, 2-impeller tooth, 3-connection is faced directly, 4-the first convex arc surface, 5-the second convex arc surface, 6-involute face, 7-the first concaved circular cambered surface, 8-the second concaved circular cambered surface.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is described further.
As shown in Figure 1, a kind of novel three leaf Roots air blower rotors, its shaft axis is O, the rotor body 1 that comprises three impeller teeth, 2 formations that are evenly arranged, described impeller tooth top portion is that FG3 is faced in a connection directly, the first convex arc surface EF4, the second convex arc surface DE5 that FG3 and impeller flank portion are faced in connection directly are linked in sequence successively, impeller tooth waist is the first concaved circular cambered surface BC7 and the second concaved circular cambered surface AB8 connecting in order, and the first concaved circular cambered surface BC7 of impeller tooth waist is connected with the second convex arc surface DE5 of impeller flank portion through involute face CD6.
In coordinate axes, A coordinate is (0,22.70), B coordinate is (21.14,31.36), C coordinate is (31.94,54.90), the first concaved circular cambered surface BC is that the center of circle, radius R are for 31.20 with coordinate points (0.74,55), the second concaved circular cambered surface AB is that the center of circle, radius R are for 30.00 with coordinate points (0,52.7); D coordinate is (51.50,64.38), E coordinate is (72.17,63.57), F coordinate is (86.51,54.02), the first convex arc surface EF is with coordinate points (67.52,41.03) for the center of circle, radius R are that 23.02, the second convex arc surface DE are that the center of circle, radius R are for 56.35 with coordinate points (67.52,41.03); G coordinate is (88.33,51.00).
Convex arc surface and the concaved circular cambered surface structure of the utility model three leaf Roots air blower rotors all adopt two sections of designed arc-shaped appearances, and impeller shape is smooth, and engagement is level and smooth, and meshing performance is strong, and matching gap is minimum, causes leakage rate little, and blower fan overall volume efficiency is high; The utility model three leaf Roots air blower rotors have good air-flow obturation effect, there is rational span ratio, its outer diameter D and the ratio D/A=1.6063 that is arranged on two intermeshing impeller centre distance A in casing, improved area utilization factor, increased actual volume, be conducive to improve volumetric efficiency, volumetric efficiency test reaches more than 85%; Improve blower flow, produce as far as possible little noise.
Claims (2)
1. novel three leaf Roots air blower rotors, the rotor body that comprises three impeller teeth formations that are evenly arranged, described impeller tooth is symmetric profile, it is characterized in that: described impeller tooth top portion is that a connection is faced directly, connect to face directly with the first convex arc surface, second convex arc surface of impeller flank portion and be linked in sequence successively, impeller tooth waist is the first concaved circular cambered surface and the second concaved circular cambered surface connecting in order, and the first concaved circular cambered surface of impeller tooth waist is connected with the second convex arc surface of impeller flank portion through involute face.
2. novel three leaf Roots air blower rotors according to claim 1, is characterized in that: the radius of the first described concaved circular cambered surface is 31.2:30 with the ratio of the radius of the second concaved circular cambered surface; The radius of the first described convex arc surface is 23.02:56.35 with the ratio of the radius of the second convex arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420385824.0U CN204003470U (en) | 2014-07-11 | 2014-07-11 | A kind of novel three leaf Roots air blower rotors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420385824.0U CN204003470U (en) | 2014-07-11 | 2014-07-11 | A kind of novel three leaf Roots air blower rotors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204003470U true CN204003470U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420385824.0U Expired - Lifetime CN204003470U (en) | 2014-07-11 | 2014-07-11 | A kind of novel three leaf Roots air blower rotors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204003470U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030898A (en) * | 2022-07-20 | 2022-09-09 | 福州大学 | Rotor with improved involute Roots rotor profile and method of designing same |
-
2014
- 2014-07-11 CN CN201420385824.0U patent/CN204003470U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030898A (en) * | 2022-07-20 | 2022-09-09 | 福州大学 | Rotor with improved involute Roots rotor profile and method of designing same |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141210 |