Suction-type cleaner with dedusting control for the filter or filters
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Solution Overview
Problem
Existing suction-type cleaners with dedusting controls require high energy consumption due to the need to counteract negative pressure on valve plates during the dedusting process, leading to increased current requirements and potential fluttering of valve devices.
Innovation Solution
A pressure equalization system is introduced between the pressure chamber and an intermediate chamber, which is deaerated during the dedusting process, eliminating negative pressure on the valve plates and reducing the actuating force required for the solenoid or other control devices, thereby minimizing energy consumption and preventing valve fluttering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a solenoid actuates the valve rod to close the valve opening in the dedusting position, then the filter is purged with high pressure and dirt particles are blown out, but the solenoid must counteract negative pressure acting on the valve plate in the opening direction, resulting in high current consumption
Solution Approach 1:
A pressure equalization chamber is introduced as an intermediary between the suction chamber and the valve plate. This chamber equalizes the pressure on both sides of the valve plate during dedusting operation, eliminating the negative pressure differential that causes high solenoid current consumption. The mediator chamber allows the valve plate to move and stay in position with minimal electromagnetic force.
Solution Approach 2:
The pressure parameters in the system are changed by introducing a pressure equalization mechanism. During dedusting, the pressure in the chamber behind the valve plate is equalized with the suction chamber pressure, transforming the high negative pressure condition into a balanced pressure state, thereby reducing the force the solenoid must overcome.
2Reliability
If the solenoid lifts the valve plate with full lifting force to overcome negative pressure, then the valve can be held closed against suction pressure, but the energy consumption increases significantly
Solution Approach 1:
The pressure equalization chamber acts as a counterweight system by providing balanced pressure on both sides of the valve plate. This eliminates the need for the solenoid to continuously counteract large pressure differentials, allowing the valve to remain stable in the closed position with minimal energy input from the control device.
3Reliability
If high current is supplied to the solenoid to counteract opening movement of the valve plate, then the valve remains closed during dedusting, but the overall energy consumption of the suction-type cleaner increases
Solution Approach 1:
The pressure equalization chamber serves as a mediator that reduces the energy loss in solenoid operation by eliminating the need to continuously overcome large pressure differentials. The chamber balances pressures during dedusting, allowing the solenoid to operate with minimal current while maintaining reliable valve position control.
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 solution significantly reduces the current and drive power required for the solenoid or control devices, ensuring stable open and closed positions of the reversing valve and preventing fluttering, while maintaining effective dedusting performance.
Implementation Method 1
Each reversing valve was actuated electromagnetically and comprised a solenoid that actuates a valve rod
Implementation Method 2
the compressed air of the turbine is conducted to flow through the filter to be dedusted in the direction opposing the direction of suction so that the filter is purged with high pressure
Implementation Method 3
a valve arrangement that in the dedusting position equalizes the pressure between pressure chamber and the intermediate chamber is arranged in the region of this intermediate chamber
Data Source
AI summary
A method for operating a suction-type cleaner, in which, in a manner controlled in the filter dedusting position by an electromagnetically actuated switchover valve arrangement (19, 20, 21), at least one filter (9), through which the dirt-laden air flow passes, is dedusted in the opposite direction to said air flow, and the dirt-laden suction air from the dirt-collecting container (1) firstly passes through the at least one filter (9) which is adjoined, in the flow direction, by a suction chamber (12), which is adjoined downstream by an intermediate chamber (26) which is arranged on the suction side of the turbine (30), and a pressure chamber (34) is arranged downstream of the turbine (30), wherein, in order to reduce the actuating force of the switchover valve arrangement (19, 20, 21) in the dedusting position of the suction-type cleaner, the pressure between the pressure chamber (34) and the intermediate chamber (26) is equalized.