Dual Centrifugal Pump Casing Layout for Check-Valve-Free Cooling
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Solution Overview
Problem
Conventional liquid cooling heat dissipation structures require additional components, such as movable members acting as check valves, which increase the number of components and complicate the structure, leading to potential inefficiencies and reduced heat exchange efficiency.
Innovation Solution
The proposed solution involves a pump device with two centrifugal pumps connected in series within a casing, eliminating the need for a check valve by ensuring liquid flow continuity, thus simplifying the structure and reducing component count, and incorporating a casing design with specific flow paths and chambers to enhance heat exchange efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a movable member functioning as a check valve is used to prevent backflow, then backflow prevention is achieved, but the number of components increases and structure becomes more complex
Solution Approach 1:
The patent removes the movable check valve component from the system by redesigning the pump chamber structure. The check valve function is extracted and replaced by the fixed structural configuration of the pump chamber, which uses its geometry to prevent backflow without requiring additional moving parts.
Solution Approach 2:
The backflow prevention function is merged into the pump chamber structure itself. The pump chamber is designed with specific geometric features that inherently prevent reverse flow, combining the pumping function and check valve function into a single integrated structure rather than separate components.
2Reliability
If a movable member functioning as a check valve is used to prevent backflow, then backflow prevention is achieved, but the flow path structure becomes more complex
Solution Approach 1:
The complex flow path structure associated with movable check valves is removed. The patent simplifies the flow path by using a fixed pump chamber geometry that naturally guides liquid flow in the correct direction and prevents backflow through its structural design rather than through complex movable components.
Solution Approach 2:
The flow path design is merged with the pump chamber structure. The pump chamber serves dual purposes: housing the pump mechanism and providing the flow direction control function, eliminating the need for separate complex flow path components with movable parts.
3Reliability
If additional components are added to prevent backflow, then backflow prevention is achieved, but heat exchange efficiency is reduced
Solution Approach 1:
The patent removes additional components from the system that would interfere with heat exchange. By eliminating the movable check valve and associated components, the heat exchange surface area is preserved and heat transfer efficiency is maintained while still achieving backflow prevention through the simplified structural 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
This configuration prevents backflow without the need for check valves, reduces the complexity of the flow path structure, and maintains heat exchange efficiency by ensuring continuous liquid flow and optimal use of space within the cooling device.
Implementation Method 1
The first pump and the second pump are centrifugal pumps
Data Source
AI summary
A pump device includes a first pump, a second pump, and a casing. The first pump and the second pump are centrifugal pumps. The casing includes a first pump chamber in which the first pump is located and a second pump chamber in which the second pump is located. The first pump chamber includes a first bottom surface, a first side surface, a first inlet, and a first outlet. The first bottom surface is located on one side in the first direction with respect to a first motor of the first pump. The first side surface is connected to the first bottom surface and extends in the first direction. The first outlet is open with respect to the first side surface. The second pump chamber includes a second bottom surface, a second side surface, a second inlet, and a second outlet.