Homemade Vacuum Cleaner Course Presentation

  Household vacuum cleaners work by using a fan-shaped impeller driven at high speed by an electric motor. The blades of the impeller continuously work on the air, imparting energy to it, which is then discharged at high speed from the fan. Simultaneously, the air in the front part of the vacuum cleaner continuously replenishes the air in the impeller, creating a temporary vacuum in the suction part. This means that there is a significant negative pressure difference within the suction part compared to the atmosphere outside. This negative pressure difference causes debris and dust near the suction nozzle to be drawn into the vacuum cleaner. Within the vacuum cleaner, the debris and dust pass through a filter, where they are retained in the dust bin, while the air is filtered and then discharged back into the room after exiting the vacuum cleaner. This completes the entire process of suction cleaning.

Experimental Objective: 1. To understand the self-made vacuum cleaner - an apparatus that converts the rotational power of the engine into kinetic energy by rotating in the air, commonly known as the air blade.

Experimental Cognition
Battery box: As the name suggests, it is a box used to install and fix the batteries, which is the device for outputting battery power.

DC motor: It is composed of stator and rotor. A DC motor is an electric motor that converts direct current electrical energy into mechanical energy. Due to its good performance in speed regulation, it is widely used in electric power traction. DC motors are divided into three categories according to the excitation method: permanent magnet, field excitation, and self-excitation. Among the self-excitation, there are three types: series excitation, parallel excitation, and compound excitation.

Switch: A device for turning power on and off.

Experimental steps:
1. Experiment preparation: Understand the experimental equipment: wind blades, switch, wires, DC motor, battery box, bottle, and pliers.

Experimental Report: The combined force of the suction power and the vacuum force generated by a vacuum cleaner exhibit opposite characteristics. That is, when the suction power is strong, the vacuum force becomes weaker, and vice versa. The maximum value of the combined force, which is the "suction power" of the vacuum cleaner, is expressed in watts (W).

Company Profile

 Chiluo Toy Factory was established in 2007. After ten years of unremitting efforts, our company has gradually matured; Our company is a member of the National Ministry of Education Teaching Equipment Industry Association and a backbone enterprise of Zhejiang Province Teaching Equipment. The company has been awarded the "Heavy Contract and Credit-Keeping" unit for three consecutive years by Yiwu City. In 2014, it was designated by the Zhejiang Provincial Education Bureau as the "Culture and Popularization Experiment Equipment Fixed-point Production Unit."

AiGou Company is a high-tech enterprise that integrates modern scientific research and development, educational equipment, curriculum design, teaching resource integration, and technical services. AiGou, with its high-tech products, is a professional enterprise in the development and production of popular science experiment teaching materials in the country. The products are exported to Europe and the United States.
 After years of accumulation, the company has initially reached a certain scale. In terms of technological innovation, the company has professional design personnel engaged in the development of scientific education products and the upgrade and replacement of existing products. In terms of production, management, and service, the company strictly implements the standards of the ISO9001 international quality assurance system. In marketing, the AiGou products have been entered into many provinces and cities in the country and enjoy a good reputation. For many years, it has provided high-quality, advanced, professional series of modern teaching equipment and professional equipment research and development custom services for the educational community. With excellent, high-quality professional talents and perfect after-sales service, it ensures the excellence of product quality and establishes a good corporate image. The scientific education physical series, chemical series, photovoltaic, wind energy, geography, biology, art and other products of Qiquan have successfully won bids in the education bureau tenders many times.

 AiGou Company continues to adhere to the business philosophy of 'quality first, service to diligence, honesty in conduct', providing excellent equipment and high-quality service for school teaching and research. We are willing to work diligently with new and old friends at home and abroad, work together, and devote our utmost efforts to education, dedicated to the cause of education.

 ChiliBuy ensures that every child can keep up with the times!!!