External Battery Pressure Spray Device
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Solution Overview
Problem
Existing pressure spray devices with electrical pumps face challenges such as time-consuming energy source exchange, inability to adjust pressure precisely, and pressure reduction during use, leading to inefficient spraying and potential contamination.
Innovation Solution
A pressure spray device with an electrical pump and a lithium-ion accumulator arranged externally, allowing for easy battery replacement and featuring a pressure sensor and regulation system to maintain constant pressure between 1 to 3 bar, ensuring efficient and controlled spraying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a hand pump is used to build up pressure in the pressure container, then the pressure can be increased, but the operation becomes time-consuming and requires repeated manual pumping after a certain period
Solution Approach 1:
The patent replaces the manual hand pump with an electric pump driven by a rechargeable battery. The electric pump automatically builds up pressure in the pressure container without requiring manual operation, eliminating the time-consuming repeated pumping process while maintaining the ability to increase container pressure to the required 1.5-1.6 bar range
2Use of energy by moving object
If battery cells are placed inside the pressure vessel, then the electric pump can be powered, but the batteries cannot be removed during operation and process interruption occurs for charging or replacing
Solution Approach 1:
The patent divides the power supply system into a separate removable battery unit that can be independently accessed from the pressure vessel. The battery is positioned in a accessible location where it can be quickly removed and replaced without disassembling the pressure vessel or interrupting the spraying process, allowing users to swap batteries during operation without stopping work
3Productivity
If pressure is increased to improve spraying efficiency, then spraying performance improves, but pressure reduction during use leads to inconsistent flow rate and potential contamination
Solution Approach 1:
The patent incorporates a pressure sensor that continuously monitors the pressure in the pressure container and provides feedback to a control system. The control system adjusts the electric pump operation based on this feedback to maintain pressure within a specific range (1.5-1.6 bar), preventing pressure reduction during spraying and ensuring consistent flow rate and spraying reliability throughout the operation
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 enables efficient and precise control of pressure, reducing wear on the pump and ensuring consistent volume flow, thereby improving spraying accuracy and reducing environmental contamination.
Implementation Method 1
an electric pump (202), in particular a pendulum piston pump, for compressing gas and feeding it into the pressure container (1100)
Implementation Method 2
a pressure sensor (221) for detecting the container pressure
Data Source
Figure 1
Figure 2
Figure 3a
AI summary
A pressure sprayer comprising a pressure vessel, an electric pump, and an electrical storage device for supplying energy to the electric pump, wherein the electric pump builds up pressure inside the pressure vessel. The invention is characterized in that the electrical storage device is arranged outside the interior of the pressure vessel, preferably laterally on the outer wall of the pressure vessel or laterally on the housing of an insert for the pressure sprayer, the insert comprising the electric pump.