Performance Improvement of a Vacuum Cleaner by Analysis of the Flow Around Motor

Park, J. W.; Hwang, D. Y.; Park, H. K.

doi:10.1115/fedsm2008-55228

Cited by 3 publications

(4 citation statements)

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“…independent element consider the interactive effects among elements; thus, they are often rather different in comparison to real experimental results [2]. Accordingly, it is necessary to predict the performance of a fan motor unit through accurate CFD analysis inside the unit; additionally, the shape of the internal structure must be designed by identifying the main parameters that affect its performance.…”

Section: • Using the Design Of Experiments The Optimum Model With Thmentioning

confidence: 99%

“…Lee [8] improved the efficiency of a centrifugal fan by varying the geometric dimensions of the impeller. Park [2] proposed a methodology for constructing a system level analysis of a fan motor assembly by combining characteristics of each component through torque matching of the fan and motor. Kim et al [9] performed a multidisciplinary optimization of an axial flow fan to enhance the aerodynamic and aero-acoustic performance.…”

Section: • Using the Design Of Experiments The Optimum Model With Thmentioning

confidence: 99%

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Optimization of the Flow Path Efficiency in a Vacuum Cleaner Fan

2018

SV-JME

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As vacuum cleaners become smaller, the size of their main components must decrease correspondingly. Although compact vacuum cleaners have different flow characteristics in comparison to full-size vacuum cleaners, research on compact vacuum cleaners is limited. In this study, the fan motor unit for a compact vacuum cleaner, which is 30 % smaller than a full-sized model, was evaluated by performing computational fluid dynamics analysis and design optimization. Since the flow path through the fan motor unit is the primary aspect determining the efficiency of the fan motor unit, the shape of the flow path is optimized. Through parametric studies, the dimensions of the diffuser underneath the fan, such as its thickness, fillet radius, and number of guide vanes, were selected as design variables. The design of the experiments was used to find the optimum design of the diffuser and guide vanes to maximize the flow path efficiency of the cleaner. The optimized model improved the flow path efficiency by 4.2 % in comparison to the initial model.

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Section: • Using the Design Of Experiments The Optimum Model With Thmentioning

confidence: 99%

Section: • Using the Design Of Experiments The Optimum Model With Thmentioning

confidence: 99%

Optimization of the Flow Path Efficiency in a Vacuum Cleaner Fan

2018

SV-JME

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“…CFD analysis of changing the impeller blade inlet shape and bending the impeller blade outlet geometry demonstrated a rise in the suction efficiency of a vacuum cleaner centrifugal fan due to the less flow separation and enhancement of suction flow rate. 16 Because of the principal role of impeller in creating high-speed radial airflow, the diffuser is mainly required to direct the flow in axial direction and to recover kinetic energy at the impeller outflow. Consequently, the diffuser duct determines the fan efficiency and an applicable strategy to improve the overall suction unit efficiency is to optimize the diffuser.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of a vacuum cleaner fan suction and shaft power using Kriging surrogate model and MIGA

Almasi

Ghorani

Haghighi

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part A:

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Optimization of vacuum cleaner fan components is a low-cost and time-saving solution to satisfy the increasing requirement for compact energy-efficient cleaners. In this study, surrogate-based optimization technique is used and for the first time it is focused on maximization of Airwatt parameter, which describes the fan suction power, as an objective function (Case II). Besides, the shaft power is minimized (Case I) as another optimization target in order to reduce the power consumption of the vacuum cleaner. 11 geometrical variables of 3 fan components including impeller, diffuser and return channel are selected as the optimization design variables. 80 training points are distributed in the sample space using Advanced Latin Hypercube Sampling (ALHS) technique and the outputs of sample points are calculated by means of CFD simulations. Kriging and RSA surrogate models have been fitted to the outputs of the sample space. Through coupling of constructed Kriging models and Multi-Island Genetic Algorithm (MIGA), the optimal design for each of the optimization cases is presented and evaluated using numerical simulations. A 20.22% reduction in shaft power in Case I and an improvement of 27.73% in Airwatt in Case II have been achieved as the overall results of this study. Despite achieving goals in both optimization cases, a slight decrease in Airwatt in Case I (−6.20%) and a slight increase in shaft power in Case II (+4.82%) are observed relative to primary fan. Furthermore, the Analysis of Variance (ANOVA) determines the importance level of design variables and their 2-way interactions on the objective functions. It was concluded that geometrical parameters related to all of the fan components must be considered simultaneously to conduct a comprehensive optimization. The reasons of enhancement in optimal cases compared with the reference design have been further investigated by analysis of the fan internal flow field. Post-processing of the CFD results demonstrates that the applied geometrical modifications cause a more uniform flow through the flow passages of the optimal fan components.

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Numerical simulation and performance optimization of the centrifugal fan in a vacuum cleaner

et al. 2019

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This paper focuses on the efficiency improvement of a centrifugal fan used in a vacuum cleaner. In order to check the performance of the centrifugal fan system, computational fluid dynamics (CFD) analysis is used. The numerical simulation with CFD tool is carried out with RNG [Formula: see text] two-equation turbulence model based on Reynolds-averaged Navier–Stokes equations. To perform the coupling between rotating impeller and stationary area, the multiple reference frame (MRF) model is used. The numerical results of the fan are validated against with experimental results and are found to be highly reliable. The design and optimization of diffuser and impeller of a centrifugal fan are realized by using numerical investigations. For reducing the kinetic energy loss inside the fan, a guide baffle is added to optimize diffuser. The optimization results show that overall efficiency of the fan is improved by 5.27% and considering the lower efficiency of impeller caused by blockage at the blade inlet, etc., the design of impeller with long-short blades is proposed. Several cases of affecting factors under different operating conditions are simulated. Relative length (denoted as [Formula: see text]) and circumferential position of short blades are chosen as design variables. It is found that the efficiency of a fan with a relative length of 0.7 can be increased by 9.34%, and the best circumferential position of short blades is between two adjacent long blades.

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Performance Improvement of a Vacuum Cleaner by Analysis of the Flow Around Motor

Cited by 3 publications

References 0 publications

Optimization of the Flow Path Efficiency in a Vacuum Cleaner Fan

Optimization of the Flow Path Efficiency in a Vacuum Cleaner Fan

Optimization of a vacuum cleaner fan suction and shaft power using Kriging surrogate model and MIGA

Numerical simulation and performance optimization of the centrifugal fan in a vacuum cleaner

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