Dual-Chamber Diaphragm Pump Using Both Sides for Lower Pulsation
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Solution Overview
Problem
Conventional diaphragm pumps suffer from inefficiencies due to unused displacement work on one side of the diaphragm, leading to energy wastage and increased pulsation during fluid conveyance.
Innovation Solution
A diaphragm pump design with two separate pump chambers and a single diaphragm that simultaneously performs suction and discharge steps, utilizing displacement work on both sides of the diaphragm, and employing check valves to control fluid flow directions, thereby minimizing pulsation and optimizing energy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a single pump chamber is used in conventional diaphragm pumps, then the structure is simple, but the displacement work on one side of the diaphragm remains unused leading to energy wastage
Solution Approach 1:
The pump chamber is segmented into two separate chambers (first pump chamber and second pump chamber) separated by the diaphragm. Each chamber independently performs fluid conveyance, allowing both sides of the diaphragm to perform useful work simultaneously, thereby eliminating wasted displacement energy.
Solution Approach 2:
The first and second pump chambers are merged into a single integrated pump housing structure, sharing common components such as the diaphragm, drive mechanism, and housing. This merging achieves energy efficiency through dual-chamber operation while avoiding the full complexity of two completely separate pump systems.
2Object-generated harmful factors
If work steps are performed successively in conventional diaphragm pumps, then the mechanism is simple, but fluid pulsation increases during conveyance
Solution Approach 1:
The diaphragm performs periodic reciprocating motion, and due to the dual-chamber configuration, each chamber experiences periodic volume changes that are out of phase. When one chamber is expanding (suction), the other is compressing (discharge), creating continuous counterbalancing action that reduces overall fluid pulsation.
Solution Approach 2:
The simultaneous operation of suction in one chamber and discharge in the other chamber ensures continuous useful action throughout the diaphragm cycle. This eliminates idle periods and maintains continuous fluid conveyance, improving productivity while reducing pulsation through the counterbalancing effect.
3Loss of energy
If a single pump chamber is used, then the device occupies less space, but energy efficiency decreases due to unused displacement work
Solution Approach 1:
The pump transitions from a single-chamber design to a dual-chamber design arranged in parallel within the same housing. This dimensional reorganization allows both chambers to utilize the diaphragm's displacement work simultaneously, eliminating energy loss while maintaining a compact footprint by sharing common structural elements.
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 design achieves increased delivery performance with reduced fluid pulsation and energy efficiency, while requiring minimal installation space, making it suitable for applications requiring high flow rates and low noise emission.
Implementation Method 1
When the diaphragm is displaced, a volume change occurs simultaneously in the first pump chamber and the second pump chamber, wherein the volume changes in the first pump chamber and the second pump chamber are opposed to one another
Implementation Method 2
At least one valve is therefore provided that prevents a fluid flow from each of the first pump chamber and the second pump chamber to the suction port, as well as a fluid flow from the discharge port to each of the first pump chamber and the second pump chamber
Data Source
AI summary
The system relates to a diaphragm pump, comprising an intake port for receiving fluid, a discharge port for outputting fluid, a first pump chamber, a second pump chamber separated from the first pump chamber, a diaphragm, which at least partly separates the first pump chamber from the second pump chamber, wherein the first pump chamber and the second pump chamber each have a connection both to the intake port and to the discharge port, said connection being suitable for fluid communication, and wherein at least one valve is provided, which prevents fluid flow from the first pump chamber and the second pump chamber to the intake port and prevents fluid flow from the discharge port to the first pump chamber and the second pump chamber.