Compact Hot Water Pressure Washer With On-Demand Heating
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Solution Overview
Problem
Hot water pressure washers are typically large, bulky, and expensive due to the need for a heat source to generate hot water, making them unsuitable for home use compared to cold water pressure washers.
Innovation Solution
A compact hot water pressure washer design featuring a gas source, engine, on-demand water heater, and high-pressure water pump, powered by liquefied natural gas or gasoline, with a portable propane tank and dual fuel capability, allowing for efficient heating and pressurization of water on demand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat source is added to a pressure washer to generate hot water, then cleaning performance is improved, but device size and cost increase
Solution Approach 1:
The patent combines the pressure washer and water heater into a single integrated unit, merging the pump, engine, and heating components into one compact system. This eliminates the need for separate hot water generation equipment and reduces overall device footprint while maintaining hot water cleaning capability
Solution Approach 2:
The engine serves dual purposes: it powers both the high-pressure pump and the water heater simultaneously. This multi-functionality reduces the need for separate power sources and minimizes device complexity while delivering hot pressurized water
2Temperature
If a heat source is added to a pressure washer to generate hot water, then cleaning performance is improved, but device cost increases
Solution Approach 1:
The system uses a self-contained engine that powers both the pump and heater, eliminating the need for external power sources or additional fuel tanks. The integrated design reduces manufacturing costs by using shared components and simplified assembly
Solution Approach 2:
By merging the pressure washing and water heating functions into one unit with shared components (engine, fuel system, control systems), the patent reduces overall manufacturing cost compared to buying and integrating separate systems
3Temperature
If commercial-grade components are used to deliver hot water, then hot water delivery capability is improved, but portability is reduced
Solution Approach 1:
The patent divides the system into compact, modular components that can be efficiently arranged on a portable frame with wheels. The segmented design allows for optimized weight distribution and easier handling while maintaining commercial-grade performance
4Temperature
If multiple fuel tanks and devices are used, then hot water capability is improved, but device bulkiness increases
Solution Approach 1:
The single engine powers both the high-pressure pump and water heater, eliminating the need for separate fuel tanks and devices. This universal power source reduces device bulkiness while maintaining full hot water capability
Solution Approach 2:
The patent merges the fuel storage and power generation into a single integrated engine system that serves multiple functions, reducing the overall volume required compared to having separate systems for pumping and heating
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 solution provides a cost-effective and portable means to deliver a high-pressure stream of heated water, suitable for home use by integrating a portable propane tank and dual fuel engine with an on-demand water heater, reducing the size and cost while maintaining effective cleaning performance.
Implementation Method 1
a gas burner directed toward the heat exchanger to heat water flowing through the heat exchanger
Implementation Method 2
a high pressure water pump includes a water pump inlet adapted to be coupled to the water heater outlet, a pump actuator operatively connected to the output shaft of the engine, and a water pump outlet adapted to provide pressurized heated water
Implementation Method 3
the engine is one of a liquefied natural gas engine or a gasoline engine, wherein the output shaft of the engine is driven by one of the liquefied natural gas or the gasoline
Data Source
AI summary
A hot water pressure washer for delivering a high pressure stream of heated water. The hot water pressure washer includes an engine, a source of gas, a water heater, and a high pressure water pump. In one embodiment, the gas is one of liquefied natural gas, liquefied petroleum gas, gasoline, or propane. The water heater includes a gas input adapted to be coupled to an outlet of the source of gas and a water input adapted to be coupled to a source of water. The water heater includes a water heater inlet, adapted to receive gas from the source of gas, and a water heater outlet, adapted to provide a heated water to a spray wand. A high pressure water pump receives water from the water heater outlet and the water pump outlet provides the pressurized heated water to a spray wand.