Handheld Pressure Washer Pump Layout for Portable High Pressure
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Solution Overview
Problem
Existing high-pressure cleaning machines are bulky, heavy, and limited by alternating-current power sources, making them inconvenient for portability and outdoor use, restricting their use scenarios and cleaning efficiency.
Innovation Solution
A handheld high-pressure cleaning machine powered by a direct current and connected to an external water source via a water pipe, featuring a compact design with a balanced center of gravity, a lightweight structure, and a planetary gear reduction mechanism to enhance portability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a conventional pump structure with piston and oscillating wheel-disk is used, then high-pressure water pumping function is achieved, but the device volume and weight increase significantly
Solution Approach 1:
The patent changes the fundamental parameters of the pump structure by replacing the traditional piston-oscillating wheel-disk mechanism with a plunger-eccentric mechanism. This structural parameter change reduces the number of working cavities needed and simplifies the overall pump architecture, achieving high-pressure water pumping with significantly reduced weight and volume.
Solution Approach 2:
The patent extracts and eliminates unnecessary components from the traditional pump structure. By removing the oscillating wheel-disk and complex piston arrangement, and retaining only the essential plunger and eccentric mechanism, the design achieves the required pumping function with minimal components, reducing weight while maintaining performance.
2Power
If alternating-current power source is used, then motor power is sufficient, but the device cannot be used outdoors without power outlets
Solution Approach 1:
The patent makes the power source dynamic and adaptable by using a rechargeable battery that can be recharged at any location. This allows the cleaning machine to transition from being location-dependent (AC power) to location-independent (DC battery power), enabling outdoor portability while maintaining sufficient motor power through the rechargeable energy source.
Solution Approach 2:
The patent substitutes the AC electrical power system with a DC battery power system. This replacement eliminates the need for external power outlets and grounding systems, providing portable power that can be used anywhere, thereby expanding the device's adaptability to outdoor environments.
3Quantity of substance
If water tank is integrated into the main body, then water storage is convenient, but the device volume and weight increase
Solution Approach 1:
The patent extracts the water storage function from the main device body and relocates it to an external water source. By removing the integrated water tank, the design eliminates the weight and volume associated with water storage in the device, while still providing access to water through external connections, thereby reducing overall device weight.
Solution Approach 2:
The patent makes the cleaning machine universally compatible with various external water sources (taps, buckets, rivers, etc.) rather than relying on a fixed integrated tank. This multi-functional approach allows the device to adapt to different water availability scenarios while keeping the device itself lightweight and portable.
4Weight of moving object
If pump structure is simplified, then device weight is reduced, but pumping efficiency may decrease
Solution Approach 1:
The patent optimizes the plunger and eccentric mechanism parameters to achieve high pumping efficiency with a simplified structure. By carefully selecting the eccentricity, plunger diameter, stroke length, and rotational speed, the design compensates for the reduced complexity, maintaining effective water pressure generation while minimizing weight.
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 machine achieves improved portability, expanded use scenarios, and enhanced cleaning efficiency by reducing weight and balancing the center of gravity, allowing users to clean in various locations with a water source.
Implementation Method 1
a planetary gear reduction mechanism to enhance portability and ease of use
Implementation Method 2
handheld high-pressure cleaning machine
Data Source
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AI summary
The present invention relates to a pump unit applied to a high-pressure cleaning machine, including: a water inlet chamber, a water outlet chamber, and a central chamber connected to the water inlet chamber and the water outlet chamber. The pump unit further includes a plunger disposed in the central chamber and an eccentric mechanism connected to the plunger. The eccentric mechanism drives the plunger to perform reciprocating motion in the central chamber.