CN103671094A - Multiple-blade type gas compressor - Google Patents
Multiple-blade type gas compressor Download PDFInfo
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- CN103671094A CN103671094A CN201310688760.1A CN201310688760A CN103671094A CN 103671094 A CN103671094 A CN 103671094A CN 201310688760 A CN201310688760 A CN 201310688760A CN 103671094 A CN103671094 A CN 103671094A
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Abstract
The invention discloses a multiple-blade type gas compressor which comprises a casing, a rotor, blades, sealing strips, gas distribution cones and cushion blocks, wherein the rotor is positioned in the center; the casing is positioned at the external part; the gas distribution cones are positioned in hollow circular-truncated-cone surfaces respectively arranged at the two ends of the rotor; the blades are placed in diagonal hollow circular rings of the casing and simultaneously positioned in the grooves of the rotor, and form angles with the rotor; one plane of each blade is adhered to the circular-truncated-cone side surfaces of the gas distribution cones; the sealing strips are positioned between the rotor and the blades; the plane sides of the sealing strips are adhered to the rotor; the circular-truncated-cone sides of the sealing strips are adhered to the circular-truncated-cone surfaces E1 of the blades; the cushion blocks are positioned in the diagonal hollow circular rings of the casing, and gaps formed by the casing, the blades, the rotor and the sealing strips are fully filled with the cushion blocks just. The multiple-blade type gas compressor disclosed by the invention has the advantages that all sealing parts adopt surface sealing, the discharge capacity is large, the pressure is high, the efficiency is high, the specific power is large, the structure is compact, the processing is easy relatively, the cost is relatively low, the multiple-blade type gas compressor is difficult to wear, and the life is long.
Description
Technical field
The present invention relates to a kind of compressor, relate in particular to a kind of Multi-vane type gas compressor.
Background technique
Existing vane compressor structure is a rotor eccentricity and is placed in cylinder block, blade radial or be placed in rotor with rotor radius is angled, rotor high-speed rotation during work, blade throws away under the effect of centrifugal force, form Seal cage with cylinder block, during rotation, volume-variation produces pressure.Blade quantity is two or multi-disc.This form compressor and vacuum pump are owing to being by the sealing of Line of contact between blade cylinder block, so sealability is poor, and delivery pressure is lower, while adding rotation, between blade and rotor and cylinder block, produce very large friction, cause compressor overall wear fast, the life-span is short, and efficiency is low.In addition, during rotation, in order to guarantee that blade can safety pass in and out in rotor, rotor must have suitable diameter, and the discharge capacity that is bound to is like this less, although there is Double-blade type compressor, owing to only having two blades, discharge capacity pulsation is larger, and it is large that discharge capacity is also owed.
Summary of the invention
The object of this invention is to provide and a kind ofly can realize large discharge capacity, discharge capacity pulsation is again little, and all sealings place are again face sealing, and nonabradable Multi-vane type gas compressor.
In order to achieve the above object, the technical solution used in the present invention is as follows: a kind of Multi-vane type gas compressor, comprise housing, rotor, blade, Stamping Steel Ribbon, distribution cone and cushion block, rotor is positioned at center, housing is positioned at outside, distribution cone is positioned at two ends of rotor open circles table top, blade be placed in housing diagonal angle hollow ring in, also be positioned at the groove of rotor simultaneously, and with rotor at an angle, the frustum cone side of plane of blade and distribution cone fits, Stamping Steel Ribbon is between rotor and blade, its plane one side and rotor laminating, round table surface one side is fitted with the round table surface E1 of blade, cushion block is positioned at the hollow ring at housing diagonal angle, just in time fill up by housing, blade, the vacancy that rotor and Stamping Steel Ribbon form.
In above-mentioned a kind of Multi-vane type gas compressor, described blade is quadrant shape, and total identical four, wherein a slice blade is enclosed and formed by two plane A1, B1 and cylinder C1, sphere D1 and two round table surface E1, J1; Wherein, C1Shi center is the cylinder that centre of sphere O1, radius are identical with the radius of the cylinder E4 of the hollow ring of housing, D1 is that the centre of sphere is the sphere that O1 radius is identical with rotor billiard table C2 radius, E1 and J1 are round table surface, the diameter of its upper bottom surface and bottom surface is respectively straight line R1S1 and straight line M1N1, and M1R1 and N1S1 are its side buses; Two plane A1 are parallel with B1; The thickness that the distance of two parallel plane A1 and B1 is blade, vane thickness equates with the hollow ring width of housing;
Described Stamping Steel Ribbon has identical eight, wherein an E1 side is round table surface, the diameter of its upper bottom surface and bottom surface is respectively straight line R1S1 and P1Q1, P1R1 and N1S1 are its side buses, K1 side is plane, cross axis and this plane parallel of centre of sphere O1, its perpendicular distance is half of four-bladed vane thickness of slab of rotor quadrature, G1 is that the centre of sphere is the sphere that O1 radius equates with rotor center billiard table C2 radius, F1 is that the centre of sphere is the sphere that O1 radius equates with housing sphere F4 radius, two faces of H1 and I1 are parallel planes, and the width of Stamping Steel Ribbon equates with vane thickness; Blade and Stamping Steel Ribbon are axisymmetric;
Described rotor is the parallel dolioform billiard table that cuts out two spherical crowns in two, in the middle of billiard table, as symmetry, insert the four-bladed vane of a quadrature, A2 is parallel disk with B2, C2 and D2 are that the centre of sphere is the sphere of O2, I2 and J2 are orthogonal two planes, a blade and two Stamping Steel Ribbons are vertically placed in the groove between I2 and J2, just in time completely closely sealed, E2 is that the centre of sphere is the sphere that O2 radius is identical with housing sphere F4 radius with F2, G2 and H2 are two identical hollow round table part sides, upper and lower two ends of one of them hollow round table are respectively the discs that disk B2 and the straight line K2L2 of take are diameter, the length of straigh line of K2M2 is the width of rotor, whole rotor is not only about billiard table center O 2 symmetries, also be axisymmetric,
Described distribution cone is a round platform, have identical two, the radius of upper and lower two end A3 of one of them round platform and B3 equates with rotor hollow round table side G2 and the radius at upper and lower two ends of H2 respectively, highly also equate with the height of rotor hollow round table side G2 and H2, the plane C3 that one side is cut mutually by a plane, the width of plane C3 the widest position is not more than the four-bladed vane thickness of slab of rotor quadrature, and plane C3 and corresponding housing annulus parallel plane C4 and D4 fit;
Described housing is the parallel dolioform sphere that cuts out two spherical crowns in two, thickness equates with the width K2M2 of rotor, A4 is the parallel disk that two radiuses equate with B4, sphere F4 be take O4 as the centre of sphere, radius equates with the radius of the large sphere E2 in outside, rotor left and right and F2, the diagonal angle of housing sphere is a hollow ring, annulus width equates with vane thickness, two side C4 of hollow ring are parallel circular planes with D4, E4 is that central shaft is by the cylinder of O4, be positioned on the diagonal of housing, its external diameter equates with the external diameter of blade cylinder C1, and be greater than the external diameter of housing sphere F4, the plane C3 of C4 and D4 two planes and a distribution cone flank face and the laminating of the respective planes of another distribution cone flank face, whole housing is about billiard table center O 4 symmetries,
Described cushion block is one section of annulus, have identical four, wherein an outside A5 is the cylinder that radius equates with housing diagonal angle annulus E4 external diameter, inner side B5 is the sphere that radius equates with housing sphere F4 radius, its upper and lower thickness equates with the four-bladed vane width K2M2 of rotor quadrature, and two waist C5 and D5 are round table surface, and the diameter of this round table surface upper bottom surface and bottom surface is respectively straight line P1Q1 and straight line M1N1, M1P1 is its side bus, and cushion block is shaped as axisymmetric.
The advantage that the present invention has is:
1) all sealings place are face sealing;
2) discharge capacity is large, and pressure is high, and efficiency is high;
3) specific power is large;
4) compact structure, processing is relatively easy;
5) cost is lower;
6) not easy to wear, the life-span is long.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is blade of the present invention and Stamping Steel Ribbon shape schematic diagram;
Fig. 2 be Fig. 1 S to T to schematic diagram;
Fig. 3 is rotor shapes schematic diagram of the present invention;
Fig. 4 is the W-W generalized section of Fig. 3;
Fig. 5 is distribution cone-shaped schematic diagram of the present invention;
Fig. 6 is that the P of Fig. 5 is to schematic diagram
Fig. 7 is housing plan view of the present invention;
Fig. 8 is housing plan view of the present invention;
Fig. 9 is the M-M generalized section of Fig. 8;
Figure 10 is overall structure schematic diagram of the present invention;
Figure 11 is that the K of Figure 10 is to schematic diagram;
Figure 12 is the N-N generalized section of Figure 10;
Figure 13 is running principle schematic diagram of the present invention;
Figure 14 is the U-U generalized section of Figure 10;
Figure 15 is working procedure principle schematic of the present invention;
Figure 16 is the V-V generalized section of Figure 13;
Figure 17 is working procedure principle schematic of the present invention.
In figure: 1. housing, 2. rotor, 3. blade, 4. Stamping Steel Ribbon, 5. distribution cone, 6. cushion block.
Embodiment
Structure of the present invention as shown in figure 13, rotor 2 is positioned at center, housing 1 is positioned at outside, distribution cone 5 is positioned at two ends of rotor open circles table top, blade 3 be placed in housing 1 diagonal angle hollow ring (guiding groove) in, also be positioned at the groove of rotor 2 simultaneously, and with rotor 2 at an angle, the frustum cone side of plane of blade 3 and distribution cone 5 fits, Stamping Steel Ribbon 4 is between rotor 2 and blade 3, its plane one side and rotor 2 laminatings, round table surface one side is fitted with the round table surface E1 of blade 3, cushion block 6 be positioned at housing 1 diagonal angle hollow ring, just in time fill up by housing 1, blade 3, the vacancy that rotor 2 and Stamping Steel Ribbon 4 form.
Fig. 1 and the shape that Figure 2 shows that blade 3 of the present invention and Stamping Steel Ribbon 4.The approximate quadrant shape of blade 3, total identical four, wherein a slice blade 3 is enclosed and is formed by two plane A1, B1 and cylinder C1, sphere D1 and two round table surface E1, J1; Wherein, C1Shi center is the cylinder that centre of sphere O1, radius are identical with the radius of the cylinder E4 of the hollow ring of housing 1, D1 is that the centre of sphere is the sphere that O1 radius is identical with Fig. 4 rotor 2 billiard table C2 radiuses, E1 and J1 are round table surface, the diameter of its upper bottom surface and bottom surface is respectively straight line R1S1 and straight line M1N1, and M1R1 and N1S1 are its side buses; Two plane A1 are parallel with B1; The distance of two parallel plane A1 and B1 is the thickness of blade 3, and blade 3 thickness equate with the hollow ring width of Fig. 8 housing 1.
Stamping Steel Ribbon 4 has identical eight, wherein an E1 side is round table surface, the diameter of its upper bottom surface and bottom surface is respectively straight line R1S1 and P1Q1, P1R1 and N1S1 are its side buses, K1 side is plane, cross the axis (as shown in Figure 1) and this plane parallel of centre of sphere O1, its perpendicular distance is half of four-bladed vane thickness of slab of Fig. 4 rotor 2 quadratures, G1 is that the centre of sphere is the sphere that O1 radius equates with Fig. 4 rotor 2 center billiard table C2 radiuses, F1 is that the centre of sphere is the sphere that O1 radius equates with Fig. 8 housing 1 sphere F4 radius, two faces of H1 and I1 are parallel planes, the width of Stamping Steel Ribbon 4 (being the distance of plane H1 and I1) equates with blade 3 thickness, blade 3 and Stamping Steel Ribbon 4 are axisymmetric.
Fig. 3 and the shape that Figure 4 shows that rotor 2 of the present invention.It in the middle of rotor 2, is the parallel dolioform billiard table that cuts out two spherical crowns in two, in the middle of billiard table, as symmetry, insert the four-bladed vane of a quadrature, A2 is parallel disk with B2, C2 and D2 are that the centre of sphere is the sphere of O2, I2 and J2 are orthogonal two planes, by the whole figure of Fig. 1, a blade 3 and two Stamping Steel Ribbons 4 are vertically placed in the groove between I2 and J2, just in time completely closely sealed, E2 is that the centre of sphere is the sphere that O2 radius is identical with housing 1 sphere F4 radius with F2, G2 and H2 are two identical hollow round table part sides, upper and lower two ends of one of them hollow round table are respectively the discs that disk B2 and the straight line K2L2 of take are diameter, the length of straigh line of K2M2 is the width of rotor 2, whole rotor 2 is not only about billiard table center O 2 symmetries, also be axisymmetric.
Fig. 5 and the shape that Figure 6 shows that distribution cone 5 of the present invention.Distribution cone 5 is round platforms, have identical two, the radius of upper and lower two end A3 of one of them round platform and B3 equates with rotor 2 hollow round table side G2 and the radius at upper and lower two ends of H2 respectively, highly also equate with the height of rotor 2 hollow round table side G2 and H2, the plane C3 that one side is cut mutually by a plane, this plane can to bore the bus of 5 frustum cone sides parallel with distribution, can be not yet to bore the bus of 5 frustum cone sides parallel with distribution, the width of plane C3 the widest position is not more than the four-bladed vane thickness of slab of rotor 2 quadratures, the spatial position of plane C3 is to determine as follows: guarantee to assemble back plane C3 and corresponding housing 1 annulus parallel plane C4 and D4 and fit, the round table surface of point D3 to E3 is air inlet face, the round table surface of point D3 to E3 is 135 degree, the round table surface of point F3 to G3 is deflation area, the round table surface of F3 to G3 is less than 135 degree, its angular dimension is depending on exhaust pressure.
Fig. 7, Fig. 8 and Figure 9 shows that the shape of housing 1 of the present invention.Housing 1 is the parallel dolioform sphere that cuts out two spherical crowns in two, thickness equates with the width K2M2 of rotor 2, A4 is the parallel disk that two radiuses equate with B4, sphere F4 be take O4 as the centre of sphere, radius equates with the radius of the rotor 2 large sphere E2 in outside, left and right and F2, the diagonal angle of housing 1 sphere is a hollow ring, annulus width equates with blade 3 thickness, two side C4 of hollow ring are parallel circular planes with D4, E4 is that central shaft is by the cylinder of O4, be positioned on the diagonal of housing 1, its external diameter equates with the external diameter of blade 3 cylinder C1, and be greater than the external diameter of housing 1 sphere F4, the spatial position of the C4 that annulus is parallel and D4 two planes is with following and determine: guarantee to assemble that rear C4 and D4 two planes and a distribution bore the plane C3 of 5 sides and respective planes that 5 sides are bored in another distribution is fitted.Whole housing 1 is about billiard table center O 4 symmetries.
Figure 12 shows that the shape of cushion block 6 of the present invention.Cushion block 6 is one section of annulus, have identical four, wherein an outside A5 is the cylinder that radius equates with housing 1 diagonal angle annulus E4 external diameter, interior survey B5 is the sphere that radius equates with housing 1 sphere F4 radius, its upper and lower thickness equates with the four-bladed vane width K2M2 of rotor 2 quadratures, two waist C5 and D5 are round table surface, the diameter of this round table surface upper bottom surface and bottom surface be respectively straight line P1Q1 and straight line M1N1(as shown in Figure 1), M1P1 is its side bus.Cushion block 6 is shaped as axisymmetric.
Operation working principle of the present invention is as follows:
As Figure 15, in one end of compressor, rotor 2, blade 3, Stamping Steel Ribbon 4, distribution cone 5 and housing 1 are divided into five independently Seal cage Q1, Q2, Q3, Q4 and Q5 separately by air cavity.When rotor 2 is when Figure 14 position turns clockwise, chamber Q2 starts air-breathing, and Q3 and Q4 are air aspiration cavity, and Q5 and Q1 are compression chamber.When forwarding Figure 15 position to, it is maximum that air aspiration cavity Q4 reaches.At this moment, air aspiration cavity Q2, Q3 and Q4 and compression chamber Q5 and Q1 still keep isolation.Rotor 2 continues rotation clockwise, and chamber Q4 starts compression, and air aspiration cavity Q2 and Q3 constantly expand, and compression chamber Q5 and Q1 constantly dwindle.When forwarding Figure 16 position to, chamber Q1 gas drains.When rotor 2 continues rotation, new air aspiration cavity starts air-breathing, and air aspiration cavity Q2 and Q3 are still in continuous expansion, and chamber Q4 and Q5 are still in continuous compression.When rotor 2 continues to rotate to exhaust position, compression chamber Q5 starts exhaust.When rotor 2 forwards Figure 17 position to, it is maximum that air aspiration cavity Q3 reaches, exhaust then.When rotor 2 continues to forward to 7a position, chamber Q5 gas drains.When rotor 2 forwards 7b position again to, it is maximum that air aspiration cavity Q2 reaches.So go round and begin again.At the other end of compressor, situation is also identical with this one end.
Above-described embodiment is used for the present invention that explains, rather than this aspect is limited, and in the protection domain of spirit of the present invention and claim, any modification and change that the present invention is made, all fall into protection scope of the present invention.
Claims (2)
1. a Multi-vane type gas compressor, it is characterized in that, comprise housing (1), rotor (2), blade (3), Stamping Steel Ribbon (4), distribution cone (5) and cushion block (6) etc., rotor (2) is positioned at center, housing (1) is positioned at outside, distribution cone (5) is positioned at two ends of rotor open circles table top, blade (3) be placed in housing (1) diagonal angle hollow ring in, also be positioned at the groove of rotor (2) simultaneously, and with rotor (2) at an angle, the frustum cone side of plane of blade (3) and distribution cone (5) fits, Stamping Steel Ribbon (4) is positioned between rotor (2) and blade (3), its plane one side and rotor (2) laminating, round table surface one side is fitted with the round table surface E1 of blade (3), cushion block (6) is positioned at the hollow ring at housing (1) diagonal angle, just in time fill up by housing (1), blade (3), the vacancy that rotor (2) and Stamping Steel Ribbon (4) form.
2. a kind of Multi-vane type gas compressor according to claim 1, it is characterized in that, described blade (3) is quadrant shape, and total identical four, wherein a slice blade (3) is enclosed and formed by two plane A1, B1 and cylinder C1, sphere D1 and two round table surface E1, J1; Wherein, C1Shi center is the cylinder that centre of sphere O1, radius are identical with the radius of the cylinder E4 of the hollow ring of housing (1), D1 is that the centre of sphere is the sphere that O1 radius is identical with rotor (2) billiard table C2 radius, E1 and J1 are round table surface, the diameter of its upper bottom surface and bottom surface is respectively straight line R1S1 and straight line M1N1, and M1R1 and N1S1 are its side buses; Two plane A1 are parallel with B1; The distance of two parallel plane A1 and B1 is the thickness of blade (3), and blade (3) thickness equates with the hollow ring width of, housing (1);
Described Stamping Steel Ribbon (4) has identical eight, wherein an E1 side is round table surface, the diameter of its upper bottom surface and bottom surface is respectively straight line R1S1 and P1Q1, P1R1 and N1S1 are its side buses, K1 side is plane, cross axis and this plane parallel of centre of sphere O1, its perpendicular distance is half of four-bladed vane thickness of slab of rotor (2) quadrature, G1 is that the centre of sphere is the sphere that O1 radius equates with rotor (2) center billiard table C2 radius, F1 is that the centre of sphere is the sphere that O1 radius equates with housing (1) sphere F4 radius, two faces of H1 and I1 are parallel planes, the width of Stamping Steel Ribbon (4) equates with blade (3) thickness, blade (3) and Stamping Steel Ribbon (4) are axisymmetric,
Described rotor (2) is the parallel dolioform billiard table that cuts out two spherical crowns in two, in the middle of billiard table, as symmetry, insert the four-bladed vane of a quadrature, A2 is parallel disk with B2, C2 and D2 are that the centre of sphere is the sphere of O2, I2 and J2 are orthogonal two planes, a blade (3) and two Stamping Steel Ribbons (4) are vertically placed in the groove between I2 and J2, just in time completely closely sealed, E2 is that the centre of sphere is the sphere that O2 radius is identical with housing (1) sphere F4 radius with F2, G2 and H2 are two identical hollow round table part sides, upper and lower two ends of one of them hollow round table are respectively the discs that disk B2 and the straight line K2L2 of take are diameter, the length of straigh line of K2M2 is the width of rotor (2), whole rotor (2) is not only about billiard table center O 2 symmetries, also be axisymmetric,
Described distribution cone (5) is a round platform, have identical two, the radius of upper and lower two end A3 of one of them round platform and B3 is equal with the radius at upper and lower two ends of H2 with rotor (2) hollow round table side G2 respectively, highly also equate with the height of rotor (2) hollow round table side G2 and H2, the plane C3 that one side is cut mutually by a plane, the width of plane C3 the widest position is not more than the four-bladed vane thickness of slab of rotor (2) quadrature, and plane C3 and corresponding housing (1) annulus parallel plane C4 and D4 fit;
Described housing (1) is the parallel dolioform sphere that cuts out two spherical crowns in two, thickness equates with the width K2M2 of rotor (2), A4 is the parallel disk that two radiuses equate with B4, sphere F4 be take O4 as the centre of sphere, radius equates with the radius of the large sphere E2 in outside, rotor (2) left and right and F2, the diagonal angle of housing (1) sphere is a hollow ring, annulus width equates with blade (3) thickness, two side C4 of hollow ring are parallel circular planes with D4, E4 is that central shaft is by the cylinder of O4, be positioned on the diagonal of housing (1), its external diameter equates with the external diameter of blade (3) cylinder C1, and be greater than the external diameter of housing (1) sphere F4, the respective planes laminating of the plane C3 of C4 and D4 two planes and distribution cone (5) side and another distribution cone (5) side, whole housing (1) is about billiard table center O 4 symmetries,
Described cushion block (6) is one section of annulus, have identical four, wherein an outside A5 is the cylinder that radius equates with housing (1) diagonal angle annulus E4 external diameter, inner side B5 is the sphere that radius equates with housing (1) sphere F4 radius, its upper and lower thickness equates with the four-bladed vane width K2M2 of rotor (2) quadrature, two waist C5 and D5 are round table surface, the diameter of this round table surface upper bottom surface and bottom surface is respectively straight line P1Q1 and straight line M1N1, M1P1 is its side bus, and cushion block (6) is shaped as axisymmetric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310688760.1A CN103671094B (en) | 2013-12-16 | 2013-12-16 | A kind of Multi-vane type gas compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310688760.1A CN103671094B (en) | 2013-12-16 | 2013-12-16 | A kind of Multi-vane type gas compressor |
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| Publication Number | Publication Date |
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| CN103671094A true CN103671094A (en) | 2014-03-26 |
| CN103671094B CN103671094B (en) | 2016-01-13 |
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| CN1664329A (en) * | 2004-09-02 | 2005-09-07 | 冯卫东 | Angle variable rotor engine with a planet gear |
| DE102004019843A1 (en) * | 2004-04-23 | 2005-11-17 | Vogt AG, Feuerwehrgeräte- und Fahrzeugbau | Device for feed of gaseous or liquid media has vanes which fit through outer wall of hollow rotor with radial movement and sealing capability, with free ends of vanes forming turbine blades onto which is directed working medium |
| CN1966984A (en) * | 2005-11-16 | 2007-05-23 | 汤科儿 | Compressor pump comprising spherical cylinder, impeller, and sloping cam plate |
| CN101268279A (en) * | 2005-07-29 | 2008-09-17 | Miba烧结控股有限及两合公司 | Vane-cell pump |
| CN101338752A (en) * | 2008-07-26 | 2009-01-07 | 郑良才 | Compressor or vacuum pump |
| CN101586473A (en) * | 2009-04-10 | 2009-11-25 | 无锡意凯顺得科技有限公司 | Cryogenic-fluid energy conversion device |
-
2013
- 2013-12-16 CN CN201310688760.1A patent/CN103671094B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004019843A1 (en) * | 2004-04-23 | 2005-11-17 | Vogt AG, Feuerwehrgeräte- und Fahrzeugbau | Device for feed of gaseous or liquid media has vanes which fit through outer wall of hollow rotor with radial movement and sealing capability, with free ends of vanes forming turbine blades onto which is directed working medium |
| CN1664329A (en) * | 2004-09-02 | 2005-09-07 | 冯卫东 | Angle variable rotor engine with a planet gear |
| CN101268279A (en) * | 2005-07-29 | 2008-09-17 | Miba烧结控股有限及两合公司 | Vane-cell pump |
| CN1966984A (en) * | 2005-11-16 | 2007-05-23 | 汤科儿 | Compressor pump comprising spherical cylinder, impeller, and sloping cam plate |
| CN101338752A (en) * | 2008-07-26 | 2009-01-07 | 郑良才 | Compressor or vacuum pump |
| CN101586473A (en) * | 2009-04-10 | 2009-11-25 | 无锡意凯顺得科技有限公司 | Cryogenic-fluid energy conversion device |
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