Vacuum Cleaner Grip Air Bypass for Suction and Noise Control
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Solution Overview
Problem
Vacuum cleaners face issues with noise from high-speed suction motors and the need to reduce suction power to prevent fabric sticking, which is addressed by existing electric control devices that increase production costs and user inconvenience due to complex assembly and potential defects.
Innovation Solution
A suction flow speed control apparatus with a first and second suction flow path, an opening/closing unit, and soundproof devices within the hand grip, allowing control of suction power without altering the suction motor speed, eliminating the need for separate controllers and electric wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electric control devices are used to control suction motor speed, then suction power can be reduced to prevent fabric sticking, but device complexity and manufacturing cost increase
Solution Approach 1:
The invention extracts the control function from the motor itself and relocates it to the flow path. By placing an opening/closing unit directly in the suction flow path, the system controls suction power by adjusting flow resistance rather than motor speed, eliminating the need for complex electric control devices while maintaining operational control.
Solution Approach 2:
The invention uses pneumatic principles to control suction power. The opening/closing unit adjusts the cross-sectional area of the flow path, creating variable flow resistance that directly controls air flow rate and suction power. This mechanical pneumatic control replaces electrical motor speed control, simplifying the system while achieving the desired suction regulation.
2Ease of operation
If electric control devices are used to control suction motor speed, then suction power can be reduced, but manufacturing cost and assembly complexity increase
Solution Approach 1:
The invention extracts the control function from the motor assembly and relocates it to the flow path connection device. This separation eliminates the need for expensive electric control components and their associated wiring, significantly reducing manufacturing cost and assembly complexity while maintaining the ability to control suction power.
Solution Approach 2:
The opening/closing unit is designed to be integrated into the flow path connection device, allowing it to be manufactured as part of the existing structure. This self-integrating design eliminates the need for separate control device manufacturing and assembly, reducing production costs and simplifying the manufacturing process.
3Ease of operation
If electric control devices are used to control suction motor speed, then suction power can be reduced, but reliability decreases due to potential defects
Solution Approach 1:
The invention extracts the control function from the electric motor system and relocates it to a mechanical flow path component. This removes multiple potential failure points including electric wires, switching units, and controlling units, significantly improving system reliability by eliminating electronic components that can malfunction or require technical service.
Solution Approach 2:
The opening/closing unit is designed as a simple mechanical component with no electronic parts, making it inherently more reliable and easier to replace if needed. By using a simple mechanical structure instead of complex electronic controls, the system achieves higher reliability with components that are less prone to defects and do not require technical service for repairs.
4Power
If suction motor rotates at high speed, then suction power is sufficient, but noise increases
Solution Approach 1:
The invention introduces dynamic control of the flow path cross-sectional area through the opening/closing unit. By dynamically adjusting the flow path area, the system can control air flow rate and suction power independently of motor speed, allowing the motor to run at optimal speed while reducing noise through flow resistance control rather than speed reduction.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution simplifies the vacuum cleaner's structure, reduces manufacturing costs, minimizes electronic parts, and user inconvenience by allowing suction power control without electric controls, thereby reducing noise and preventing fabric sticking.
Implementation Method 1
a second suction flow path which is formed inside a hand grip disposed on the flow path connection device, and which includes a first port fluidly communicating with the outside, and a second port fluidly communicating with the first suction flow path
Implementation Method 2
the second port includes a first soundproof device installed on the exhaust grille
Data Source
Figure 1~2
Figure 3A~3B
Figure 4
AI summary
A suction flow speed control apparatus of a vacuum cleaner is provided. The suction flow speed control apparatus includes a first suction flow path (100), one end of which is connected to the main body (1) of the vacuum cleaner, and the other end of which is connected to a nozzle unit (2). The apparatus includes a second section flow path (200) which is formed inside a hand grip (3) disposed on a flow path connection device (18), and which includes a first port (210) connected to the outside and a second port (220) connected the first suction flow path. An opening/closing unit (300) is provided for opening and closing the second port (220).