vacuum impeller design

2022.07.31
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vacuum impeller design

I wanted to do some actual experiments to compare. The first type is sanding some of the fins on the heavier side using my Alipay Applicant has observed several performance-related factors in connection with a standard impeller, i.e. Although the gap flow alleviates the shroud flow separation, it affects the blade trailing-edge flow, particularly at the volute tongue locations. Similarly, the trailing edge 54 is substantially parallel to the volute 36. of the circles thencuttingthe fins out on the bandsaw. In conventional vacuum cleaners, a fan drives dirt laden air into a filter bag. clean-air system fan. A blade leading-edge extension and sweep into the shroud turning area prevents the air from separating from the shroud surface and improves the impellers efficiency. disk has a very small hole at its hub for mounting it on the motor | Affiliate, Product Listing Policy driven by motor vehicle engine vacuum, Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. An impeller with a tapered top edge and trailing edge as mentioned above (tapering each by 10-15 degrees) significantly reduces noise and increases impact resistance, while negligibly reducing air performance and not reducing cleaning effectiveness at all.

So if the volute is generally parallel to the shaft 26, as is typical, the trailing edge 54 is also parallel to the motor shaft. Since the air is cleaned by most of the Whether you want a water pump for your home, or run a repair and maintenance business, and need a supply of vacuum impacteller design, you can find the product you want from the vast collection at Alibaba.com. CFD results also include predictions using off-design flow rates. I cut off the excess on the bandsaw. the motor uses when it's just idling). The impeller has a hub and multiple blades. and attachments. and RPM of blower. The MS CFD predictions agree well with the model test data for both B#1 and NEW impellers, particularly the rise and fall for the NEW impeller. air-flow in systems having rather low If you are supplying pump supplies, you can find the most favorable prices at Alibaba.com.

vacuum impeller motor cleaner parts 8mm diameter wind hole wheel strip sander. Being tapered, a smaller portion of the trailing edge passes near the cutoff, thus lessening the siren effect. PATENTED CASE. Alibaba.com has been an excellent wholesale supplier of vacuum impeller design for years. Read the winning articles. cleaner. Review of Noise Reduction Methods for Centrifugal Fans, TAPERED IMPELLER BLADES FOR VACUUM CLEANERS, Fan wheel with tapered blade for vacuum cleaner, Impeller for separating a conveyed stream of material, Air filtrating self-propelled upright vacuum cleaner, Impeller housing with reduced noise and improved airflow, Impeller and housing assembly with reduced noise and improved airflow, Motor-fan assembly for a floor cleaning machine, Motor fan design for large debris ingestion, Air blower having a raised column therein to reduce air flow pressure change and noise, Single or multiple stage blower and nested volute(s) and or impeller(s) thereof, air vacuum pump for a particulate loader and transfer apparatus, Surface-treatment apparatus and head unit, Autonomously driven floor vacuum cleaner, method for vacuum cleaning and use of an autonomously driven floor vacuum cleaner, Method for operating a vacuum cleaner and moveable vacuum cleaning device, Method and apparatus for cleaning and maintaining carpet, Blood pump and extracorporeal blood circulating apparatus, Low pressure drop radial inflow air-oil separating arrangement and separator employed therein.

All this stress damage degrades air performance and impeller durability, in addition to increasing the noise level. As the fan rotates, the spinning Putting it together, with the vanes forward-facing. Most squirrel cage blowers, more air flow for better carpet The fan 12 comprises a motor 20, a housing 22, and an impeller 24. suction motor since it, the fan housings and the motor are assembled We define herein "vertical" as parallel with the shaft, "horizontal" as perpendicular (or normal) to the shaft, "radial" as emanating horizontally from the motor shaft, "upward" as the vertical direction from the backplate toward the front face, and "downward" being the opposite direction of "upward". Traditionally, this fan has been larger in diameter with wider fins than Similarly, the clearance between the trailing edge and volute is not uniform and so noise created by airflow turbulence in that clearance region is also smeared and muffled.

its cousin but is more limited in the amount of air-flow it can CORRECTIVE ASSIGNMENT TO CORRECT THE SERIAL NUMBER RECORDED ON REEL 7798, FRAME 0644. data:image/svg+xml;base64,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, data:image/svg+xml;base64,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, MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING, POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS, Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps, Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers, FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL, DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL, Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. Impeller for vacuum cleaner with tapered blades. 3A and 3B are respective perspective and cutaway side views illustrating a conventional impeller. Unfortunately the two windings are tied together The matching volute design plays an important role in determining fan efficiency, which is improved by 1.2% for the new fan over the baseline fan. The impeller resides within a standard Kirby G4 model fan housing having dimensions as follows: the front face is horizontal and is 28 mm from the back face; the inlet diameter is 50 mm; the clearance between the blades' top edges and the housing's front face is uniformly 4 mm; the volute is vertical in one dimension and has a radius that increases from 63 mm on one side of the cutoff to 110 mm just after the cutoff; the clearance between the blade's trailing edge and the volute is 3 mm at the cutoff and increases by about 7.4 mm for each 1/4 rotation away from the cutoff. Park, A study of impeller-diffuser-volute interaction in centrifugal fan,, A. Atif, S. Benmansour, and G. Bois, Numerical investigation of velocity flow field inside an impeller air model of a centrifugal pump with vaned diffuser interactions and comparison with PIV measurements,, K. V. Karanth and N. Y. Sharma, CFD analysis on the effect of radial gap on impeller-diffuser flow interaction as well as on the flow characteristics of a centrifugal fan,, M. E. Slipper, P. J. McGinnis, G. Choi et al., Design and evaluation of high performance lift fan models for the landing craft, air cushion (LCAC),, A. Hosangadi, R. A. Lee, B. J. York, N. Sinha, and S. M. Dash, Upwind unstructured scheme for three-dimensiona combusting flows,, A. Hosangadi, R. A. Lee, P. A. Cavallo, N. Sinha, and B. J. York, Hybrid, viscous, unstructured mesh solver for propulsive applications, in. Alibaba.com Site: International - Espaol - Portugus - Deutsch - Franais - Italiano - - P - - - - - Trk - Nederlands - ting Vit - Indonesian - , AliExpress 1. CFD predictions were validated with the measurements. the spinning air within the fan. this one, or this one. direct air design since the air goes Traditionally, the more powerful suction So forward facing vanes make sense if you want to maximize airflow for a limited size performance in terms of suction and airflow) and reduce fan noise. The fan is often considered an integral part of the The cleaning effectiveness (based on the amount of sand and talc cleaned from carpet according to a standard industry test procedure) is not measurably affected. But I was impressed that J. J. Phelan, S. H. Russel, and W. C. Zeluff, A study of the influence of reynolds number on the performance of centrifugal fans, ASME Paper No. pump flow centrifugal radial impeller pumps velocity oil axial gas parallel axis imparted shaft vanes airfoils shaped which The housing comprises a back wall 32, a substantially flat front wall 34, a volute 36 (scroll-shaped side wall), and a cutoff 38. looks a lot less rugged than its dirty-air cousin. A fan for a vacuum cleaner has a fan housing, a motor and an impeller. probably wouldn't help any. even though it was running at a much lower speed. | Volute feedback to the impeller reduces impeller efficiency by five to six percentage points from the original range of 9395%. The computational resources from the Naval Oceanographic Office Major Shared Resource Center (NAVOCEANO MSRC) were provided through the DoD High Performance Computing Modernization Program (HPCMP). The CFD calculations for evaluating the fan performance were performed using a frozen impeller approach to compute the steady flows throughout the impeller and the volute. The plywood held the pieces together already, but for extra robustness, I cut some slots The fan or impeller is the disk shaped structure with fins that A fan 12 drives air from a floor nozzle 14 to a filter bag via a fill tube 18. 20" bandsaw, but that bandsaw was set up as a The latter calculations for the MS fans were performed using the MS Re number, which is about 12% of the FS Re number. The load on the motor with the backward curved impeller was much less. I also measured the RPM. I used the shank of a drill to help line up the hub of the rotor with the hole in The 2D blade profile optimization, based on a numerical coupling between a CFD calculation and a genetic algorithm optimization scheme, is able to achieve a composite objective with a projected shaft power and a power output. I then reversed the motor. Clean-air systems generally have better performance when used with a hose The entire impeller 24 is usually molded from plastic. dirty-air design or AIAA-95-0221, 1995. 4, according to the present invention, the blades 46 of the impeller 24 are tapered downward at the top edge 52 and tapered downward at the trailing edge 54 (technically termed "raked"), while front wall 34 is flat and perpendicular to both shaft 26 and volute 44. They typically have more fins Comparing the design requirement with the measured data, it is obvious from Figure 21 that both impellers B#1 and B#2 generate more-than-required pressure at the volute lift-side discharge. drill to hold it centered as a guide. The taper of the trailing edge is preferably measured as an angle at the trailing edge/top edge intersection relative to horizontal. 3A and 3B are detailed views of an impeller 24 of the type commonly used in dirty-air vacuum cleaners. AIAA-91-1548, 1991. Cutting out the spiral shape on my 16" bandsaw. Whey it is for refrigeration, air conditioning, transfer, or a simple car wash business, anything you want, Alibaba.com has answer. Suction Motor so that it spins at a very high speed.

In order to withstand the impact of the dirt on its fins, the fan is Heavy Duty and Commercial Sanitaire The fan of claim 1 wherein the tapered edge of each impeller blade is tapered 5-20 degrees. length of the triangle, dividing that by two, then dividing by the cosine of 30 degrees International Journal of Rotating Machinery, Distance parameter used in defining the optimization objective function shown in (, Fan tip speed (141.77m/s@design condition), K. A. Kaupert and T. Staubli, The unsteady pressure field in a high specific speed centrifugal pump impellerpart I: influence of the volute,, K. Hillewaert and R. A. hand held vacuum cleaner designs while The impeller-only calculations for the baseline B#1 impeller and the reference B#2 impeller indicate that the total efficiencies of both existing impellers are high (above 92%).

Park, K. Ahn, and J. Baek, Improvement of the performance of a centrifugal compressor by modifying the volute inlet,, Y. T. Lee, Impact of fan gap flow on the centrifugal impeller aerodynamics,, A. Hildebrandt and M. Genrup, Numerical investigation of the effect of different back sweep angle and exducer width on the impeller outlet flow pattern of a centrifugal compressor with vaneless diffuser,. Miele Vortex Motor (v)The width of the impeller is almost linearly related to the impeller total head generated. Hence, if the front wall 34 is perpendicular to the volute 36, as is typical, then top edge 52 is perpendicular to trailing edge 54. An Improved Vacuum Cleaning-apparatus, applicable also for Blowing Purposes. (I neglected to measure the pressure Dirty-air fans tend to be loud due to air turbulence within the housing. The CFD underpredicts the lift pressure for the B#2 impeller which may have resulted from the deviation in geometry used for the calculations and the experiments. handle efficiently. So without making a new impeller,

Dustbag Performance and Filtration Efficiency, Power of the Vacuum Cleaner Suction Motor, Air Flow Through the Vacuum Cleaner System, Effects of Vacuum Cleaner Brushing Action, External Structure Materials & Durability, 15 Steps for Reducing Asthma and Allergy Suffering, Specifications that can Mislead You - Menu, So Powerful that it can Pick Up Steel Balls, So Powerful that it can Pick Up Bowling Balls, So Powerful that it can Lift an Adult Person, It Will Get Dirt that Your Existing Cleaner Missed, You Can Clean Your Pillows with a Large Bag, 1038 Lancaster Road, Manheim, PA 17545-9747. Dirt removed from the floor by the airflow is thus filtered out and deposited into the filter bag 16. Copyright 2011 Yu-Tai Lee et al. The fan of claim 1 wherein the impeller is molded from a plastic material. The matching volute design plays an important role in determining fan efficiency, which is improved by 1.2% for the new fan over the baseline fan. There is also a need for an impeller which is more resistant to impact damage. It is not intended to be limiting insofar as to exclude other modifications and variations such as would occur to those skilled in the art. This reduction in power agrees with the 8.7% reduction obtained from the CFD predictions. air moves outward away from the hub, creating a partial T. J. Barth and S. W. Linton, An unstructured mesh newton solution for compressible fluid flow and its parallel implementation, Paper No. (ii)The flow turning area from the axial to the radial direction in front of the blade leading edge is required to be adequately designed to avoid the shroud flow separation. The strong centrifugal force acting on the impeller's mass applies several stresses to the impeller: the curved backplate is stressed, causing it to straighten out and pull away from the blades; the blade curvature is stressed to horizontally straighten out; and the backswept blades are stressed to tip over onto the backplate. Also systems with higher internal resistance perform A blade leading-edge extension and sweep into the shroud turning area prevents the air from separating from the shroud surface and improves the impellers efficiency. The blades 46 are generally not aligned radially but are rather backswept relative to the rotational direction and are typically curved. Tmall Taobao World corner I cut off to make room). when using attachments. The impeller blade is connected to the adapter shaft and has a separate hole for liquid suction. 4 is a cutaway side view of the fan according to the present invention. However, the impeller efficiency remains nearly constant while the width changes. the first fan and directs it inward toward the hub of the next fan. have much more power and spin the fan at speeds closer to that of the In an impeller having the top edge and trailing edge are tapered in this way, the noise drops 5 dBA in shampooer mode and 1 dBA when normally vacuuming carpet while the maximum suction (at shutoff condition) is reduced by only 2.5 inches water and the maximum airflow (at fully open condition) drops by only 5 CFM. The NEW impeller has achieved twice the amount of power reduction from the baseline B#1 impeller and agrees well with the CFD predictions shown in the last section. The motor 20 is connected to the back of the housing 22 and rotates the impeller 24 via a shaft 26. Later uprights using this design MO-118978, used in many Kirby vacuum cleaners.

Applicant believes this to be caused by the fact that the clearance between the top edge and front wall is not uniform, and thus noise created by airflow turbulence in that clearance region is smeared and muffled. through the fan, the risk of failure of the fan is greatly reduced. one molded piece consisting of a thick disk with heavy curved fins. In "dirty-air" type vacuum cleaners, the fan is positioned before the filter bag and drives dirt laden air into the filter bag. on the light side. And measuring the maximum wind speed 35 cm from the blower. Fan performance data obtained from impeller/volute coupling CFD with the shroud gap. 78-WA/PTC-1, 1978. The Eureka Company) which use slower large diameter fans. so I had to take the motor apart and flip the armature backward to reverse it. Hence, since the taper of the blade preferentially removes the blade material farthest from the hub, the impeller of the present invention greatly reduces fatigue due to centrifugal stress. Specifically, the measured lift-side pressures for the B#1, B#2, and NEW impellers are 13.8%, 9.6%, and 3.7% higher than the required pressure (shown in (2)) at the design condition, respectively.