CN101173670A - Multi-stage turbine using steel and aluminum blades - Google Patents
Multi-stage turbine using steel and aluminum blades Download PDFInfo
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- CN101173670A CN101173670A CNA2007101819246A CN200710181924A CN101173670A CN 101173670 A CN101173670 A CN 101173670A CN A2007101819246 A CNA2007101819246 A CN A2007101819246A CN 200710181924 A CN200710181924 A CN 200710181924A CN 101173670 A CN101173670 A CN 101173670A
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Abstract
The present invention discloses a multistage turbine with one or more input stage fan blades formed of aluminum and having one or more output stage fan blades formed of steel. One or more intermediate stages may be formed of aluminum or steel or a combination thereof.
Description
The cross reference of related application
The application requires the rights and interests of the U.S. Provisional Application No.60/862384 of submission on October 20th, 2006, and the full content of this application is incorporated this literary composition in the mode of reference clearly.
Technical field
The present invention relates to be fit to be applied to the especially turbine of HVLP (high flow capacity low-pressure) type air painter of air painter.
Background technique
Each grade use aluminum blades that is used for one to three grade of turbine of turbine technology of HVLP spraying finish unit at present.Owing to have high pressure and high temperature in the level Four turbine, each level of level Four turbine is used the steel blade.In addition, because the huge contilever load of 4 steel blades, the turbine of this superior performance is limited in level Four.Because the structure of steel blade, this turbine keep balance exceedingly difficult.Motion speed (RPM) when excessive weight makes the threshold vibration frequency become normally to move with turbine motor is very approaching.If turbine is not by balance suitably, resonance can cause too early wearing and tearing even damage inner bearing.
Each following stages in the bypass turbine all can produce heat and pressure at the previous stage place.Even in HVLP air painter equipment, use the level Four turbine, still need performance improved, surpass existing level Four (turbine) designing technique, cost reduces or controlled turbine.Be desirable to provide five (or more) levels turbine, but use steel to make the problem that turbine stage can aggravate contilever load, and use conventional aluminium to make turbine stage is infeasible, because the temperature and pressure at the places at different levels of output stage or this turbine design has surpassed the ability to bear of conventional aluminium.
The conventional aluminium of Shi Yonging should be understood as that the aluminium of non-aviation-grade herein, adds one or more doped chemicals usually with the aluminium-this aluminium of aviation-grade and forms contrast with the characteristic one that changes aluminium.Here special concern be the aluminium of various forms of aviation-grades, described aluminium can bear the enough intensity that high temperature keeps target application simultaneously.Some examples of this doped chemical comprise: copper (in the 2xxx series aluminum), magnesium and silicon (in the 6xxx series aluminum) and zinc (in the 7xxx series aluminum).Therefore, the aluminium of the aviation-grade that herein uses is meant that those can bear the aluminum alloy of high temperature and high pressure (load) in the output stage of HVLP turbine.
Though the aluminium of aviation-grade may be suitable for the high temperature and high pressure at HVLP turbine output stage place, this material has the shortcoming that cost is higher than the aluminium of non-aviation-grade.(it is 99% that the aluminium that example is a 1xxx series of the aluminium of non-aviation-grade, this aluminium do not have too many doped chemical and minimum aluminum content.)
The aluminium of aviation-grade has the another one shortcoming, and promptly owing to the existence of doped chemical, this aluminium is difficult for reclaiming.Therefore, expectation utilizes the cost and the callable advantage of the aluminium of non-aviation-grade, uses the aluminium of non-aviation-grade in the input stage of HVLP turbine, avoids the shortcoming of the aluminium of aviation-grade at this turbine output stage place simultaneously.
Summary of the invention
Solving the threshold frequency of five (or more) levels turbine and the method for contilever load problem simultaneously is, uses the aluminium of non-aviation-grade (non-aircraft rank) to make the first order or input stage and uses steel to make afterbody or output stage.The first order (input stage) is at the outermost of intermediate bearing (between motor and fan portion branch).Use the first order of the aluminium manufacturing fan part of non-aviation-grade to greatly reduce contilever load, because the weight of this aluminium approximately is 1/3 of steel.The higher level (perhaps output stage) and the intermediate bearing of material that needs to bear elevated pressures and temperature is more approaching, and therefore, the weight of these grades is so important unlike away from intermediate bearing the time.
The combination of the aluminum blades of the steel blade of turbine output and the non-aviation-grade of input end is for being effective with the steel vane collocation in the high pressure-temperature district of turbine.Blade outermost end, that cause maximum cantilever load that is positioned at axle is made by the aluminium of non-aviation-grade, and blade bears lower pressure and temperature herein.
Description of drawings
Fig. 1 is the perspective view of HVLP turbine group in its housing of prior art;
Fig. 2 is the turbine group of prior art among Fig. 1 and the fragmentary cross-sectional view of housing;
Fig. 3 is the exploded view of the turbine group of prior art among Fig. 2;
Fig. 4 is the side view of turbine of the present invention, and its part is cut open so that some aspect of the present invention to be shown.
Embodiment
With reference now to accompanying drawing,,, can see the HVLP turbine group 10 and the housing 11 of prior art particularly with reference to figure 1-3.In device 10, single-stage inverse axial flow turbine 40 closely is connected with the conventional tangential current drainage formula turbine (flow tangential discharge turbine) 41 of level Four.Device shown in Fig. 1-3 is from U. S. Patent 5639222, and the full content of this patent is incorporated by reference this literary composition clearly.Readily appreciate that device 10 can provide the Pyatyi turbine, but need two motors (46 and 47) and usually than low by single-motor driven global formula Pyatyi fan part efficient, cost is high.
Fig. 4 illustrates according to integrated type Pyatyi turbine 200 of the present invention.Turbine 200 has fan level 210 and links to each other with fan level 210 so that drive the electric motor 212 of this fan level by the rotation of motor drive shaft 214.Axle 214 is preferably by motor bearing 216 and intermediate bearing 218 supportings.The fan blade of the rotation in the fan level 210 places the outside of intermediate bearing 218, thereby forms contilever load on axle 214.
First and second grades of fan blade 220 are preferably made by the aluminium of non-aviation-grade.Third level fan blade can be made (perhaps also can be formed from steel if desired) by the aluminium of non-aviation-grade.The 4th and level V fan blade 224 preferably made of steel.Should be appreciated that the present invention can expand to and has more multistage for example six grades turbine.
Be in operation, the cooling air that is used for motor 212 is inhaled into by motor suction port 228 along the direction of arrow 226.The motor cooling air is discharged motor 212 along the direction of arrow 230.Turbine air enters fan level inlet 232-shown in arrow 234, discharges fan level 210 along the direction of arrow 238 by tangential venting gas appliance 236 then.
Therefore, can see that the present invention is a multistage turbine, it has at least one input stage fan blade of being made by the aluminium of non-aviation-grade, one or more intergrade fan blade and one or more output stage fan blade of being made by the aluminium or the steel (or both combinations) of non-aviation-grade that is formed from steel.
In a preferred embodiment, the present invention is the Pyatyi turbine, and this Pyatyi turbine has the first order fan blade made by the aluminium of non-aviation-grade and second level fan blade, by the aluminium of steel and non-aviation-grade one of them third level fan blade of making and fourth stage fan blade that is formed from steel and level V fan blade at least.
Should be appreciated that if desired the different parts of intergrade fan blade can be made by aluminium and steel respectively.
Should also be understood that the more of the present invention or whole aluminum hardwares of the aluminium manufacturing that to use aviation-grade, consequently reduce or lose the advantage of the aluminium that uses non-aviation-grade.
The present invention should not be regarded as being limited to ball of wax, under situation without departing from the spirit and scope of the present invention, can make amendment and changes the present invention.
Claims (14)
1. multistage turbine, described multistage turbine have at least one input stage fan blade made of aluminum, by aluminium and one of them intergrade fan blade of making of steel and the output stage fan blade that is formed from steel.
2. multistage turbine according to claim 1 is characterized in that, described intergrade turbofan is made by aluminium and steel.
3. multistage turbine according to claim 1 is characterized in that, at least one input stage fan blade is made by the aluminium of non-aviation-grade.
4. multistage turbine according to claim 1 is characterized in that, described at least one input stage fan blade is made of aluminum fully.
5. multistage turbine according to claim 1 is characterized in that, described aluminium is the aluminium of non-aviation-grade.
6. Pyatyi turbine, described turbine have the first order fan blade that is each made of aluminum and second level fan blade, by steel and aluminium one of them third level fan blade of making and fourth stage fan blade that is formed from steel and level V fan blade at least.
7. turbine according to claim 6 is characterized in that, described third level fan blade is made by aluminium and steel.
8. turbine according to claim 6 is characterized in that, the described at least first order and second level fan blade are made of aluminum fully.
9. turbine according to claim 6 is characterized in that, described aluminium is the aluminium of non-aviation-grade.
10. turbine according to claim 6 is characterized in that, the described at least first order and second level fan blade and third level fan blade are made by the aluminium of non-aviation-grade.
11. turbine according to claim 6 is characterized in that, each fan blade made of aluminum is all made by the aluminium of non-aviation-grade.
12. a high flow capacity low-pressure turbine group, described turbine group have to five levels the paint spray gun of coating cloudization being transmitted air, described turbine group comprises:
A) a plurality of input stage fan blade of making by the aluminium of non-aviation-grade; And
B) at least one output stage fan blade that is formed from steel.
13. turbine group according to claim 12 is characterized in that, this turbine group also comprises at least one aluminium and one of them intergrade fan blade of making of steel by non-aviation-grade.
14. turbine group according to claim 12 is characterized in that, this turbine group also comprises the intergrade fan blade that at least one is made by the aluminium and the steel of non-aviation-grade.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US86238406P | 2006-10-20 | 2006-10-20 | |
| US60/862,384 | 2006-10-20 | ||
| US11/859,611 | 2007-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101173670A true CN101173670A (en) | 2008-05-07 |
Family
ID=39422355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101819246A Pending CN101173670A (en) | 2006-10-20 | 2007-10-17 | Multi-stage turbine using steel and aluminum blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101173670A (en) |
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2007
- 2007-10-17 CN CNA2007101819246A patent/CN101173670A/en active Pending
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080507 |