Handheld Vacuum Retention Latch and Airflow Loss Reduction
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Solution Overview
Problem
Existing vacuum cleaners, particularly stick and 2-in-1 models, face challenges in minimizing airflow losses, which affect suction efficiency and battery life, making it difficult to maintain high performance without increasing motor power or weight and cost by adding more batteries.
Innovation Solution
The design incorporates a convertible stick vacuum with a removable handheld unit, featuring a docking latch system and safety catch mechanism, along with a rectangular vacuum hose to minimize airflow resistance and optimize airflow paths, ensuring efficient airflow and reduced energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If motor power is increased to compensate for airflow losses, then suction efficiency is improved, but battery life is shortened and energy consumption increases
Solution Approach 1:
The patent converts the harmful airflow losses into a design constraint that drives optimization of the airflow path. By carefully designing smooth transitions, minimizing bends, and optimizing the geometry of the airflow channel, the patent reduces turbulence and pressure losses, thereby maintaining high suction efficiency without requiring increased motor power, thus preserving battery life
2Use of energy by moving object
If more batteries are added to increase power capacity, then energy consumption is improved, but weight and cost increase
Solution Approach 1:
The patent changes the parameters of the airflow path geometry to minimize resistance. By optimizing the cross-sectional area, reducing the number of bends, and ensuring smooth transitions throughout the airflow channel, the patent reduces the pressure drop and maintains efficient airflow with the existing battery power capacity, avoiding the need to add more batteries and thereby avoiding increased weight
3Adaptability or versatility
If handheld unit is made removable for versatility, then adaptability is improved, but connection reliability deteriorates
Solution Approach 1:
The patent employs a dynamic latch mechanism that can be easily engaged and disengaged by the user, providing versatile convertible functionality. The latch system includes movable latch arms that snap into place to securely hold the handheld unit, ensuring reliable connection during use while allowing quick removal when needed, thus balancing adaptability with connection reliability
Data Source
AI summary
A vacuum cleaner having a base with an inlet facing a surface, a handle connected to the base, an air passage connecting the base inlet to the handle, and a removable handheld unit. The handheld has an inlet nozzle, a dirt separator, a vacuum fan to generate a working airflow into the inlet nozzle and through the dirt separator, and a housing joining the handheld, the dirt separator and the vacuum fan. The vacuum has a docking latch with a first latch position in which the latch holds the handheld in an operating position on the handle, and a second position in which the latch permits removal of the handheld from the operating position. The vacuum also has a safety catch with a catch member on the handle and a second member on the handheld. The catch members resiliently hold the handheld unit on the handle in a partially-removed position.