转鼓式飞剪刀片更换与使用维护

介绍南钢中厚板机组飞剪刀片更换方法,并在此基础上总结出一套有效的飞剪刀片使用维护方法。     

四种新型吸尘器悄然崛起

四种新型吸尘器为微型吸尘器、激光吸尘器、高效吸尘器和杀菌吸尘器。微型吸尘器主要用于家庭清洗大衣、棉被、床单及计算机键盘上的灰尘。这类吸尘器多为手持式,重量轻,吸尘率高,应用领域广泛。激光吸     

一款充电式吸尘器的产品设计

简述了充电式吸尘器和普通家用吸尘器的差异,制定了研制的充电式吸尘器的技术方案,介绍了本产品几个重要机构的结构设计,指明了本产品必须重点关注的几项安规要求。     

一种可自动收放线多自由度清洁的遥控吸尘器

通过对家用吸尘器现状的研究和分析,结合实际需求,提出了一种在住宅中具有一定环境适应性,并且具有自主控制能力的新型家用真空吸尘器。该新型遥控吸尘器是集自动行走、吸尘清洁、全自动收放线、头部摆动伸缩、避障等多功能于一体的新型机电一体化产品,它在原有吸尘器的基础上有机加入多个机电控制装置,解放人的双手。新型遥控吸尘器由双马达独立驱动机构、无级变速机构、六连杆机构和内部嵌入式系统等结合而成,在实际使用中得到了很好的作业效果。论文主要介绍其工作原理及创新设计。     

一种便携式吸尘器数字化样机设计

根据便携式吸尘器的结构特点,将其划分为底座、工作装置、轮组以及附件等四个部分。采用CATIA V5软件所支持的NURBS建模方式,完成了便携式吸尘器四个组成部分的三维模型设计。在虚拟环境下,采用同轴、贴合以及距离等约束方法,完成了便携式吸尘器数字化样机的虚拟装配,为便携式吸尘器后续零部件模具制造提供数据支持,也为完成其他曲面类产品的设计过程提供了思路和方法。     

智能吸尘器行走遍历方式研究

针对大部分智能吸尘器吸尘遍历的算法复杂和遍历效果不佳的问题,提出了以参照物相对定位的方式来确定智能吸尘器在房间的相对位置,以极坐标的形式实现在房间的100%遍历行走吸尘,实验采用超声波测距的方式实现智能吸尘器的相对位置确定.结果表明,此方法简洁高效地实现了智能吸尘器在房间的吸尘遍历,同时也提高了智能吸尘器的避障能力.     

无线摇控智能化真空吸尘器定位方法与避障的研究

基于红外传感技术,对智能吸尘器红外避障问题、路径规划及控制系统进行研究。对智能吸尘器进行运动学模型的分析,采用了两种研究方法研究传感器的集成,区间分析算法和扩展卡尔曼滤波方法能够准确地对智能吸尘器定向定位。     

一款吸尘器风量管的改进设计

简述了吸尘器风量管的工作原理、分析了一款吸尘器风量管功能失败的根本原因、并对其进行了改进设计,彻底解决了该问题。     

基于Rhino的吸尘器外壳造型设计

证实了计算机辅助设计软件Rhino在吸尘器外壳造型设计中运用的可行性,从吸尘器外壳造型的分析入手,以一款卧式吸尘器的三维建模为例,对设计过程中涉及到的关键技术进行分析,提出一种基于Rhino的吸尘器外壳设计建模的一般方法。     

基于Rhino的吸尘器外壳造型设计

证实了计算机辅助设计软件Rhino在吸尘器外壳造型设计中运用的可行性,从吸尘器外壳造型的分析入手,以一款卧式吸尘器的三维建模为例,对设计过程中涉及到的关键技术进行分析,提出一种基于Rhino的吸尘器外壳设计建模的一般方法.     

一种非接触式的刀口角测量系统

为了测量五金刀剪的刀口角度,在流体接触式电容倾角传感器的基础上,设计并制造了一种基于激光的非接触刀口角测量系统。该系统结构简单,可实现刀口角的非接触测量。通过对两种刀的刀口角测量表明,该系统测量刀口角的误差小(约为0.3°),精度高(0.1°),特别适用于刀剪行业的刀口角度检测。     

应用MATLAB图像处理技术获取吸尘效率

针对目前在测算真空吸尘车吸尘效率的过程中,普遍存在人为干扰因素及劳动强度大等问题,提出一种基于MATLAB图像均匀化处理、图像阀值化方法以及图像面积提取技术的测算吸尘效率的新方法,并通过实验证明,应用MATLAB图像处理技术可以快速、高效地获取吸尘效率。     

实用型智能吸尘器传感器技术初探

对智能吸尘器的传感器技术进行初步研究,同时,将该技术应用到实际的项目中,以期开发出价格低、体积小,同时覆盖率能够满足家庭应用的性价比较高的实用型智能吸尘器产品.     

Specifying your requirements

The author explains the power and advantages of product design specification. As an example he considers the first vacuum cleaner launched by Dyson     

Experimental analysis of flow fields inside intake heads of a vacuum cleaner

The flow structure inside the intake head greatly affects the working efficiency of a vacuum cleaner such as suction power and aero-acoustic noise In this study, the flow inside intake heads of a vacuum cleaner was investigated using qualitative flow visualization and quantitative PIV (Particle Image Velocimetry) techniques The aerodynamic power, suction efficiency and noise level of the intake heads were also measured In order to improve the performance of the vacuum cleaner, inner structure of the flow paths of the intake head, such as trench height and shape of connection chamber were modified. The flow structures of modified intake heads were compared with that of the original intake head The aero-acoustic noise caused by flow separation was reduced and the suction efficiency was also changed due to flow path modification of intake head In this paper, the variations of flow fields for different intake heads are presented and discussed together with results of aerodynamic power, suction efficiency and noise level     

Acoustic metamaterial design for noise reduction in vacuum cleaner

Journal of Mechanical Science and Technology - In this study, we investigate the acoustic metamaterial (AMM) design for flow noise reduction when using a vacuum cleaner. The AMM was based on the...     

Effect of suction nozzle modification on the performance and aero-acoustic noise of a vacuum cleaner

The suction nozzle of a vacuum cleaner was modified to enhance the power performance and to reduce the airflow-induced acoustic noise. The suction power efficiencies of the vacuum cleaner were measured for various nozzles: (1) original nozzle, (2) original nozzle with modified trench height, (3) original nozzle with modified connecting chamber, and (4) a combination of (2) and (3). In addition, the suction pressure and sound pressure level around the suction nozzle were measured to validate the reduction of acoustic noise. The power efficiency and mean suction pressure increased when the trench height of the suction nozzle was increased. This was attributed to the suppression of the flow separation in the suction channel. Modification of the connecting chamber in the original nozzle, which had an abrupt contraction from a rectangular chamber into a circular pipe, into a smooth converging contraction substantially improved the suction flow into the connecting pipe. When both modifications were applied simultaneously, the resulting suction nozzle was more effective from the viewpoints of aerodynamic power increase and sound pressure level reduction.     

Aeroacoustic characteristics and noise reduction of a centrifugal fan for a vacuum cleaner

The aeroacoustic characteristics of a centrifugal fan for a vacuum cleaner and its noise reduction method are studied in this paper. The major noise source of a vacuum cleaner is the centrifugal fan. The impeller of the fan rotates at over 3000 rpm, and generates very high-level noise. It was revealed that the dominant noise source is the aerodynamic interaction between the rotating impeller and stationary diffuser. The directivity of acoustic pressure showed that most of the noise propagates backward direction of the fan-motor assembly. In order to reduce the high tonal sound generated from the aerodynamic interaction, unevenly pitched impeller and diffuser, and tapered impeller designs were proposed and experiments were performed. Uneven pitch design of the impeller changes the sound quality while the overall sound power level (SPL) and the performance remains similar. The effect of the tapered design of impeller was evaluated. The trailing edge of the tapered fan is inclined. This reduces the flow interaction between the rotating impeller and the stationary diffuser because of some phase shifts. The static efficiency of the new impeller design is slightly lower than the previous design. However, the overall SPL is reduced by about 4 dB(A). The SPL of the fundamental blade passing frequency (BPF) is reduced by about 6 dB(A) and the 2^nd BPF is reduced about 20 dB(A). The vacuum cleaner with the tapered impeller design produces lower noise level than the previous one, and the strong tonal sound was dramatically reduced.