Pump Head Assembly with Shifter for Low-Pressure Cleaning
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Solution Overview
Problem
Electric pressure washers waste energy when not sucking cleaning compounds and are inconvenient to stop when issues arise, requiring complex spray head changes for low-pressure cleaning.
Innovation Solution
A pump head assembly with a separate water outlet, throttle orifice, and liquid suction port, featuring a one-way valve and shiftable liquid intake shifter, allowing self-pressure tap water suction, reducing energy consumption and enabling simultaneous high and low-pressure washing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If water flows through a throttle orifice for automatic intake of cleaning compound, then cleaning compound intake function is realized, but power is wasted when cleaning compound is not needed
Solution Approach 1:
The system dynamically switches between different operational modes using a shifter mechanism. The shifter can be positioned to either connect the fluid inlet to the first water outlet (high-pressure mode without cleaning compound intake) or to the second water outlet (low-pressure mode with cleaning compound intake capability), allowing the system to adapt its function based on operational needs and avoid unnecessary energy consumption
Solution Approach 2:
The pump head assembly is designed with multi-functionality to perform both high-pressure washing and low-pressure cleaning compound application through a single integrated structure. The second water outlet and associated throttle orifice provide cleaning compound intake capability, while the shifter mechanism allows selective activation of this function, making the system versatile without constantly consuming power
2Adaptability or versatility
If the pressure washer needs to spray cleaning compound or perform low pressure cleaning, then the spray head needs to be changed, but this complicates the operation for the operator
Solution Approach 1:
The pump head assembly integrates multiple spray functions into a single unified structure. By providing both a first water outlet for high-pressure washing and a second water outlet for low-pressure cleaning compound application, along with a shifter mechanism for easy mode switching, the system eliminates the need for physical spray head changes while maintaining full functional versatility
Solution Approach 2:
The shifter mechanism provides dynamic switching between different operational modes (high-pressure/low-pressure, cleaning compound intake/not intake) without requiring physical disassembly or component changes. This dynamic reconfiguration capability maintains adaptability while significantly improving ease of operation
3Adaptability or versatility
If a separate second water outlet with throttle orifice is added, then cleaning compound intake is enabled, but device complexity increases
Solution Approach 1:
The second water outlet, throttle orifice, and liquid suction port are integrated into a unified sub-assembly within the pump head structure. This merging of components for cleaning compound intake functionality allows the system to gain versatility while minimizing the increase in overall device complexity through compact and consolidated design
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 lowers energy consumption, reduces motor power requirements, and simplifies operation by allowing efficient high and low-pressure cleaning with reduced product costs and improved cleaning efficiency.
Implementation Method 1
a liquid suction port for cleaning compound flowing through is disposed at an outlet end of the throttle orifice
Implementation Method 2
a one way valve is disposed in the liquid suction port for controlling the cleaning compound intake
Data Source
AI summary
The patent application relates to a pump head assembly. The pump head assembly includes a pump head which at least has a water inlet and a first water outlet between which a pressurizing unit is provided, and the pump head further includes a second water outlet, a throttle orifice is provided between the water inlet and the second water outlet, the throttle orifice is provided with a water outlet end and a water inlet end, the throttle orifice is provide with a liquid suction port, and a one way valve is provided on the liquid suction port. The pump head assembly realizes cleaning liquid suction by self-pressure of tap water, which lowers energy consumption, and effectively and reasonably saves energy sources.