Solenoid Valve Control for High-Pressure Cleaning Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-pressure cleaning devices are prone to malfunctions and have high production costs due to the need for specially designed solenoid valves and control devices to manage heating, which are often energized unnecessarily.
Innovation Solution
The use of state variables such as flow rate or pressure in the pressure line to control solenoid valves, ensuring current is only applied when cleaning liquid is being dispensed, reducing unnecessary heating and allowing for the use of less expensive solenoid valves and optimizing pump operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solenoid valves are continuously energized to control cleaning liquid supply, then reliable control of cold and heated cleaning liquid is achieved, but excessive heating of solenoid valves occurs leading to malfunctions and high production costs
Solution Approach 1:
The patent applies periodic action by using a control device that intermittently supplies current to the solenoid valves based on the actual operating state of the high-pressure cleaning device. The control device receives signals from sensors detecting parameters such as pump operation status, heating device status, and pressure tank level, and only energizes the solenoid valves when cleaning liquid needs to be supplied. This periodic energization prevents continuous heating while maintaining reliable control, directly resolving the contradiction between control reliability and temperature control.
2Ease of operation
If solenoid valves are continuously energized to ensure cleaning liquid supply, then control functionality is maintained, but energy consumption increases and production costs rise
Solution Approach 1:
The patent implements feedback control through a control device that continuously monitors the operating state of the high-pressure cleaning device using multiple sensors. The control device receives feedback signals about pump operation, heating device status, pressure tank level, and other parameters, and uses this information to intelligently control the energization of solenoid valves. This feedback mechanism ensures control functionality is maintained only when needed, significantly reducing unnecessary energy consumption and production costs.
Solution Approach 2:
The control system operates autonomously by automatically determining when solenoid valves need to be energized based on sensor inputs. The control device self-regulates the current supply to solenoid valves according to the actual operational requirements of the cleaning device, eliminating the need for continuous manual control or unnecessary energization, thereby optimizing energy usage while maintaining operational readiness.
3Temperature
If specially designed solenoid valves with pulsating current control are used to prevent overheating, then temperature control is improved, but device complexity and production costs increase
Solution Approach 1:
The patent employs a multi-functional control device that performs multiple control tasks using standard solenoid valves. The control device manages not only the solenoid valves but also the pump, heating device, and other components based on integrated sensor feedback. By using universal control logic and standard off-the-shelf solenoid valves rather than specially designed pulsating current valves, the system achieves temperature control without increasing device complexity or production costs.
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 approach reduces the risk of malfunctions, lowers energy consumption, and decreases production costs by ensuring solenoid valves are only heated when in use, making the high-pressure cleaning device more reliable and cost-effective.
Implementation Method 1
an electrical heating device connected to the supply connection for heating cleaning liquid
Implementation Method 2
a first solenoid valve and a second solenoid valve, via which cold cleaning liquid and heated cleaning liquid can be supplied
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a high-pressure cleaning device (10) comprising a supply connection (34), a pressure connection (35), an electric heating device (26), and a pump (24) which is driven by a motor (23) and which comprises a suction line (67) and a pressure line (68). The suction line (67) can be fed cold cleaning fluid via a first magnet valve (73) and heated cleaning fluid via a second magnet valve (74), and the magnet valves (73, 74) can be controlled by means of a control device (30). The magnet valves (73, 74) can be controlled dependent on a state variable of the cleaning fluid that can be found in the pressure line (68) so that the high-pressure cleaning device (10) is less susceptible to faults and can be produced in a more cost-effective manner.