This project has been done with joint cooperation of Pars Khazar industrial group - Nur Toushe home appliances company and NVA research center of the university of Tehran on the HVC412 commercial product. Each part of the vacuum cleaner assembly is geometrically optimized according to fluent streamlines in order to minimize the noise level. In this procedure it is attempted to avoid most important aero-noise generating mechanisms such as: turbulence, rapid air passage changes, impact, sudden exhausting traps, cavity noise and etc. In addition to noise reduction of the product the main purpose was to increase the vacuum pressure of the device. In each segment prototypes of concerned parts have been made and tested in various conditions. Tests results include noise level reduction and vacuum pressure increase.
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机译：该项目已采用Pars Khazar Industrial Group - Nur Toushe家电公司和德黑兰大学的NVA研究中心的合作完成了HVC412商业产品。根据流畅的流线，真空吸尘器组件的每个部分是几何优化的，以便最小化噪声水平。在此过程中，它试图避免最重要的航空噪声产生机制，例如：湍流，快速空气通道改变，冲击，突然排出的陷阱，腔噪声等。除了产品的降噪，主要目的是增加装置的真空压力。在各种条件下进行并测试了有关部件的每个段原型。测试结果包括噪声水平降低和真空压力增加。
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