Modular Pressure Washer Design for Versatility and Cost Reduction
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Solution Overview
Problem
The existing pressure washer systems face challenges in providing versatility across various applications while maintaining cost-effectiveness, as they require multiple components and assemblies, leading to increased manufacturing costs and inefficient fuel usage due to inefficient heat exchangers.
Innovation Solution
A modular design for pressure washer systems that utilizes a limited number of components and subassemblies, including a support frame, power assembly, cage assembly, blower and heat exchanger assembly, and tank assembly, allowing for customizable configurations to suit different applications by swapping interchangeable modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple different pressure washer systems are provided to suit various applications, then versatility and application-specific performance are improved, but manufacturing cost increases due to needing many different components
Solution Approach 1:
The pressure washer system is divided into modular assemblies (power assembly, pump assembly, tank assembly, cage assembly) that can be independently configured and combined. This segmentation allows versatility through different combinations while reducing overall complexity by reusing standard modules across applications.
Solution Approach 2:
Standardized assemblies such as the power assembly with mounting surface and the cage assembly with universal attachment points can serve multiple functions across different pressure washer configurations. The same power assembly can be used in various applications by simply changing the pump or tank configuration, reducing the total number of unique components needed.
2Adaptability or versatility
If multiple different pressure washer systems are provided to suit various applications, then application-specific performance is improved, but manufacturing cost increases
Solution Approach 1:
By segmenting the system into standardized assemblies, each module can be manufactured independently using optimized processes, reducing per-unit costs through volume production of standard components rather than custom manufacturing for each application.
Solution Approach 2:
The system allows parameter changes (power, flow rate, temperature, mobility) by reconfiguring existing modules rather than manufacturing entirely different systems. For example, changing from cold water to hot water operation involves adding or removing a heat exchanger assembly rather than redesigning the entire system.
3Temperature
If the heat exchanger is oversized or operates inefficiently, then temperature requirements may be met, but fuel consumption increases and emissions increase
Solution Approach 1:
The heat exchanger assembly is designed to be dynamically configurable - it can be added or removed based on the specific application requirements. This allows the system to operate efficiently at lower temperatures when heating is not needed, or to use an appropriately sized heat exchanger for the specific thermal load, avoiding the fuel waste associated with oversized or inefficient heat exchangers.
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 modular design maximizes versatility while minimizing the number of components, reducing manufacturing costs and improving fuel efficiency by allowing for tailored systems that can be easily adapted to specific applications, thus enhancing performance and reducing emissions.
Implementation Method 1
the same fuel is often used as part of an ignition system that creates a flame that heats air that is blown through a heat exchanger, which in turn, heats the water and/or other cleaning fluids
Implementation Method 2
the cleaning fluid may be sprayed at a high pressure via a pump to help wash items
Implementation Method 3
a pressure washer is supplied with a fossil fuel supply such as gasoline or diesel to fuel an engine, which powers a pump for expelling the water at the desired pressure
Data Source
AI summary
A modular design for a pressure washer system comprises a support frame including a top mounting surface, a first power assembly configured to be mounted to the support frame, and a cage assembly including a cage frame and a cage attached to the cage frame and configured to extend upwardly from the cage frame at least partially surrounding the power assembly, wherein the cage frame is configured to be attached to the support frame.