CN201739196U - Asymmetric diagonal-flow air compressor - Google Patents
Asymmetric diagonal-flow air compressor Download PDFInfo
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- CN201739196U CN201739196U CN2010202076572U CN201020207657U CN201739196U CN 201739196 U CN201739196 U CN 201739196U CN 2010202076572 U CN2010202076572 U CN 2010202076572U CN 201020207657 U CN201020207657 U CN 201020207657U CN 201739196 U CN201739196 U CN 201739196U
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Abstract
Disclosed is an asymmetric diagonal-flow air compressor, which comprises a rotor impeller, a motor, an air compressor casing and a stator impeller, the rotor impeller is connected with the motor and is fixed with the air compressor casing through a motor support, the rotor impeller is positioned at an inlet of the air compressor casing, an outlet of the air compressor casing is connected with the stator impeller, and the utility model is characterized in that the rotor impeller is provided with nine identical blades, the blades are asymmetrically distributed on the circumference of the rotor impeller, and each blade is provided with two rows of small holes vertical to the airflow direction at the airflow outlet of the rotor impeller. The utility model employs the asymmetric flow field design, through pilot tests, and compared with the diagonal air compressor with the symmetrical flow field design, the utility model can effectively overcome the random surge phenomenon of the air compressor in high-speed rotation, and can operate stably at a rotary speed of 10000 rpm, and because the rotary speed is increased, the pressure ratio and the efficiency are also improved correspondingly, and high flow and high efficiency can also be ensured while high pressure ratio is guaranteed.
Description
Technical field
The utility model belongs to the aeromechanics technology field, relates to diagonal flow type air pressure mechanism of qi, is specially a kind of asymmetric diagonal flow type air pressure mechanism of qi, can improve its efficient, flow and stability when guaranteeing the gas compressor high pressure ratio.
Background technique
One is divided into axial flow, centrifugal and diagonal flow type the air pressure mechanism of qi.Axial-flow compressor has big flow usually, low-pressure ratio, high efficiency feature; Centrifugal-flow compressor then has small flow usually, high pressure ratio, inefficient characteristic.Mixed-flow, both diagonal flow type air pressure mechanism of qi can obtain higher pressure ratio and higher efficient when obtaining big flow.Become world's medium top-line today at high-efficiency environment friendly energy-conservation, energy-efficient diagonal flow type air pressure mechanism of qi just is being subjected to the extensive attention and the research of academia and industrial quarters.In the modern life and in the commercial Application, the application of air pressure mechanism of qi is seen everywhere, for example, and the blast furnace dust suction of large-scale steel works, the ventilation of mine culvert, little air vacuum cleaner, electric fan to family daily life etc.
At present, the diagonal flow type air compressor that has been used for market, it has the big and higher characteristics of axial flow air pressure mechanism of qi flow coefficient of centrifugal type air gas compressor pressure coefficient concurrently, has advantages such as noise is low, energy consumption is little, compact structure, but the problem that is difficult to overcome below always existing:
1, with centrifugal type air gas compressor ratio, its pressure ratio is much smaller;
2, with axial flow air pressure mechanism of qi ratio, its pressure ratio has improved, but the volume of air flow significantly reduces, and efficient also descends thereupon;
3, in order to solve top 2 problems, require the wheel speed of diagonal flow type air pressure mechanism of qi to improve, but simultaneously at random the unstability that causes of surge to also corresponding being enhanced of requirement of impeller, flow passage structure design and the motor of gas compressor, there is not suitable structure, impeller of rotor structure particularly improves rotating speed and can make the gas compressor can't proper functioning, under the serious situation even can cause the gas compressor collapse, under the present diagonal flow type gas compressor design, one can only reach 3～5,000 rev/mins rotating speed;
4, from low speed to high speed, speed improves, and after impeller reaches certain rotating speed, can produce separations because of the boundary layer influence of air on blade, causes the whole aeroperformance destruction of gas compressor, and gently then flutter will damage the mechanical mechanism of whole gas compressor in the time of seriously.
Therefore, the diagonal flow type gas compressor will improve rotating speed, and then raising pressure ratio and efficient, keep efficient again in this body structure of gas compressor tolerance interval when improving, make normally stable operation of gas compressor, this is that gas compressor manufactures and designs the target of being pursued all the time, and one gas compressor is difficult to reach this requirement.
Summary of the invention
Problem to be solved in the utility model is: existing diagonal flow type air pressure mechanism of qi need improve rotating speed, but the structure of present diagonal flow type air pressure mechanism of qi raising rotating speed then can't stable operation.
The technical solution of the utility model is: asymmetric diagonal flow type air pressure mechanism of qi, comprise impeller of rotor, motor, compressor housings and stator impeller, impeller of rotor links to each other with motor and fixes by electric machine support and compressor housings, impeller of rotor is positioned at the compressor housings inlet, the compressor housings outlet links to each other with the stator impeller, it is characterized in that impeller of rotor is provided with 9 same blades, described blade is distribution or asymmetrical distribution on the circumference of impeller of rotor, from the air flow inlet direction of impeller of rotor, the angle between the adjacent blades is followed successively by clockwise: 43 °, 48 °, 43 °, 30 °, 34 °, 48 °, 48 °, 36 °, 30 °.
Further, the air flow outlet of impeller of rotor, every blade is provided with two parallel row's apertures perpendicular to airflow direction, described two row's apertures are positioned at apart from the scope of blade end 5-10mm, row's spacing of two row's apertures is 5mm, ratio of arranging little hole number and last row's little hole number near the blade end is two-to-one, and every row's aperture is along direction evenly distribution on blade of place row separately, aperture 1-2mm.
The utility model motor is four pole brushless DC motors, 10000 rev/mins of rated speeds.
The utility model is at the deficiency of existing diagonal flow type air pressure mechanism of qi, the novel air pressing machine structure that a kind of novel asymmetric impeller distributes is proposed, adopt the design of asymmetric flow field, it is the design that asymmetrical rotor distributes, full flow passage system is carried out Flow Field Calculation and design, obtain specific asymmetrical rotor impeller of the present utility model.Through experiment test, compare with the diagonal flow type gas compressor of symmetrical flow Field Design, the utility model can effectively overcome the surging phenomenon that gas compressor takes place at random when high speed rotating, because rotating speed improves, pressure ratio and efficient also obtain corresponding raising, and can guarantee high flow capacity and high efficiency when guaranteeing high pressure ratio.
In addition, the utility model impeller blade afterbody has two row's apertures, can eliminate leaf tail place air and produce separation because of the boundary layer influence, thereby effectively prevent compressor surge, guarantees the normal stable operation of gas compressor.
The utility model can mate high rotating speed direct current generator, can be under 10000 rev/mins rotating speed stable operation, after rotating speed improves, the gas compressor performance is corresponding also is improved for air mass flow, pressure ratio and efficient etc., and the stable operation of gas compressor is also guaranteed high flow capacity and high efficiency when having guaranteed high pressure ratio.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an impeller of rotor structural representation of the present utility model.
Fig. 3 is the generalized section of the utility model impeller of rotor.
Embodiment
By shown in Figure 1, the gas compressor that the utility model provides is linked to each other with motor 2 by asymmetrical impeller of rotor 1, and impeller of rotor 1 is fastened on the axle of motor 2 by nut; The assembly of described motor and impeller of rotor links to each other with electric machine support 3 again and by the sunk screw tightening, electric machine support 3 is fixing with compressor housings 4; Electric machine support 3 is fixing by screw and stator impeller 5, and stator impeller 5 is stuck in the outlet of compressor housings 4 and is screwed, and this has just formed gas compressor of the present utility model.
Wherein, as shown in Figure 2, impeller of rotor 1 is provided with 9 same blades, described blade is distribution or asymmetrical distribution on the circumference of impeller of rotor 1, from the air flow inlet direction of impeller of rotor 1, the angle between the adjacent blades is followed successively by clockwise: 43 °, 48 °, 43 °, 30 °, 34 °, 48 °, 48 °, 36 °, 30 °.
As optimal way, the air flow outlet of impeller of rotor 1, every blade is provided with two parallel row's apertures perpendicular to airflow direction, as shown in Figure 3, described two row's apertures are positioned at apart from the scope of blade end 5-10mm, and row's spacing of two row's apertures is 5mm, and the ratio of the little hole number of row at close blade end and last row's little hole number is two-to-one, every row's aperture is along direction evenly distribution on blade of place row separately, aperture 1-2mm.
The utility model can be realized high rotating speed, adopts four pole brushless DC motors as motor 2,10000 rev/mins of rated speeds, and then the utility model gas compressor also can stable operation under 10000 rev/mins rotating speed.
From airintake direction, nine blades of the utility model impeller of rotor are along circumferentially being non-homogeneous distribution or asymmetrical distribution, and its uneven texture has suppressed the surge of gas compressor effectively when the impeller of rotor high speed rotating just.
As Fig. 3, the impeller blade afterbody has two row's apertures, front-seat two holes, and row four holes, back, during the impeller high speed rotating, the air-flow that produces in the hole can effectively prevent high pressure draught and produce separation, further eliminates compressor surge.
The above only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all should be encompassed within the protection domain of the present utility model.
Claims (3)
1. asymmetric diagonal flow type air pressure mechanism of qi, comprise impeller of rotor (1), motor (2), compressor housings (4) and stator impeller (5), impeller of rotor (1) links to each other with motor (2) and is fixing by electric machine support (3) and compressor housings (4), impeller of rotor (1) is positioned at compressor housings (4) inlet, compressor housings (4) outlet links to each other with stator impeller (5), it is characterized in that impeller of rotor (1) is provided with 9 same blades, described blade is distribution or asymmetrical distribution on the circumference of impeller of rotor (1), from the air flow inlet direction of impeller of rotor (1), the angle between the adjacent blades is followed successively by clockwise: 43 °, 48 °, 43 °, 30 °, 34 °, 48 °, 48 °, 36 °, 30 °.
2. asymmetric diagonal flow type air pressure mechanism of qi according to claim 1, the air flow outlet that it is characterized in that impeller of rotor (1), every blade is provided with two parallel row's apertures perpendicular to airflow direction, described two row's apertures are positioned at apart from the scope of blade end 5-10mm, row's spacing of two row's apertures is 5mm, ratio of arranging little hole number and last row's little hole number near the blade end is two-to-one, and every row's aperture is along direction evenly distribution on blade of place row separately, aperture 1-2mm.
3. asymmetric diagonal flow type air pressure mechanism of qi according to claim 1 and 2 is characterized in that motor (2) is four pole brushless DC motors, 10000 rev/mins of rated speeds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202076572U CN201739196U (en) | 2010-05-28 | 2010-05-28 | Asymmetric diagonal-flow air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202076572U CN201739196U (en) | 2010-05-28 | 2010-05-28 | Asymmetric diagonal-flow air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201739196U true CN201739196U (en) | 2011-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202076572U Expired - Fee Related CN201739196U (en) | 2010-05-28 | 2010-05-28 | Asymmetric diagonal-flow air compressor |
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| Country | Link |
|---|---|
| CN (1) | CN201739196U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339287A (en) * | 2021-05-31 | 2021-09-03 | 势加透博（北京）科技有限公司 | Turbo compressor |
-
2010
- 2010-05-28 CN CN2010202076572U patent/CN201739196U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339287A (en) * | 2021-05-31 | 2021-09-03 | 势加透博（北京）科技有限公司 | Turbo compressor |
| CN113339287B (en) * | 2021-05-31 | 2022-06-10 | 势加透博（北京）科技有限公司 | Turbo compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20110528 |