Handheld extraction cleaner
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Solution Overview
Problem
Existing handheld extraction cleaners face challenges in effectively balancing weight and comfort during use, noise reduction, and efficient fluid delivery and recovery systems, particularly in portable and handheld designs.
Innovation Solution
A handheld extraction cleaner with a unitary body featuring a dirty air inlet and clean air outlet, a suction nozzle, a suction motor, a recovery tank, and noise-dampening baffles, along with a modular fluid supply assembly and a pump for balanced weight distribution and noise reduction, enabling efficient cleaning fluid application and extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a handheld extraction cleaner is designed with all necessary components (motor, tanks, pump) in a compact unitary body, then portability and ease of operation are improved, but noise levels increase due to closer component proximity
Solution Approach 1:
The patent extracts the harmful noise-generating function from the motor assembly and isolates it using acoustic absorption material. The motor housing is lined with acoustic absorption material that absorbs noise generated by the motor and fan, preventing it from propagating to the exterior of the device. This allows the motor to remain integrated in the handheld unit while mitigating its noise contribution.
Solution Approach 2:
The patent introduces acoustic absorption material as an intermediary substance between the noise-generating motor components and the external environment. This material acts as a mediator that absorbs sound waves and converts acoustic energy into heat, thereby reducing noise transmission from the compact motor assembly to the user.
2Temperature
If the motor housing is open to the working air path for cooling, then heat dissipation is improved, but noise from the motor is transmitted more readily to the exterior
Solution Approach 1:
The patent applies different properties to different regions of the motor housing. The interior surfaces of the motor housing are lined with acoustic absorption material to create a noise-absorbing environment, while the exterior housing remains open or perforated to allow air flow for cooling. This local differentiation allows simultaneous achievement of thermal management and noise reduction.
Solution Approach 2:
The patent separates the cooling function from the noise transmission path by providing dedicated air flow paths that bypass the noise-sensitive exterior surfaces. Cooling air is drawn through the motor housing interior where it absorbs heat from the motor, then expelled through controlled openings that are acoustically treated, thus extracting the cooling function while preventing noise leakage.
3Ease of operation
If weight is distributed evenly in the handheld unit, then balance and comfort are improved, but the complexity of the fluid delivery and recovery systems increases
Solution Approach 1:
The patent combines the fluid delivery and recovery systems into an integrated architecture where the pump, supply tank, and recovery tank are positioned and connected to create balanced weight distribution. The pump serves both delivery and recovery functions, and the tanks are positioned to counterbalance the motor and other heavy components, achieving balance without requiring separate complex systems for each function.
Solution Approach 2:
The pump is designed as a multi-functional component that handles both cleaning fluid delivery and dirty fluid recovery. This universal component performs multiple functions within a single device, reducing the number of separate systems needed and thereby simplifying the overall device complexity while maintaining balanced weight distribution through strategic positioning.
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
The design provides a balanced and comfortable handheld extraction cleaner that effectively applies and recovers cleaning fluids, reduces noise, and maintains efficient operation, enhancing user experience and cleaning efficiency.
Implementation Method 1
at least one baffle disposed between the motor housing and the at least one exhaust vent, with the at least one baffle being fluidly coupled with the working air path to dampen noise
Data Source
AI summary
A handheld extraction cleaner includes a unitary body provided with a carry handle, and further provided with a supply tank, a recovery tank, and a suction source, all of which are carried on the unitary body. The various components of the extraction cleaner can be arranged for a balanced weight in hand. The supply tank can be integrated with a fluid distributor in a removable, modular unit.