Electric Pump Chamber Layout for Lower Seal Pressure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Components within electric pumps used for sealing purposes in lubrication and cooling systems of vehicles are prone to failure due to high oil pressure, reducing their service life.
Innovation Solution
The electric pump design includes a hydraulic chamber with a low-pressure chamber in communication with a first channel, allowing working medium to flow into a second chamber with relatively low pressure, thereby reducing the oil pressure and minimizing component failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the electric pump operates in a lubrication system and/or cooling system, then it can meet market requirements for vehicle fluid pumping, but the high oil pressure within the motor chamber causes sealing components to fail more frequently, reducing service life
Solution Approach 1:
The motor chamber is divided into a first chamber and a second chamber separated by a bottom wall with a first channel. This segmentation allows the working medium to flow through the first channel from the first chamber to the second chamber, reducing pressure buildup and minimizing the impact of high pressure on sealing components, thereby resolving the contradiction between pumping capability and sealing component reliability
Solution Approach 2:
The first channel acts as an intermediary pathway that allows the working medium to flow from the high-pressure first chamber to the second chamber. This intermediary structure reduces the pressure differential across sealing components and prevents direct exposure to high pressure, thereby extending sealing component service life while maintaining pumping functionality
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 design extends the service life of the electric pump components by reducing the likelihood of sealing failures, enhancing operational reliability.
Implementation Method 1
the low-pressure chamber is in communication with the first channel, and the first channel is in communication with the second chamber... part of the working medium within the low-pressure chamber to flow into the second chamber through the first channel
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
An electric pump, comprising a first rotor assembly (4) and a second rotor assembly (6). The electric pump is provided with a first cavity (20) and a second cavity (30), wherein the first rotor assembly (4) is located in the first cavity (20), the second rotor assembly (6) is located in the second cavity (30), and the first rotor assembly (4) is in transmission connection with the second rotor assembly (6). The electric pump is provided with a first accommodating part (9), wherein the first accommodating part (9) comprises a bottom wall (91). The electric pump comprises a first channel (40), wherein the first channel (40) penetrates through an upper surface and a lower surface of the bottom wall (91). The first rotor assembly (4) comprises a first rotor (41) and a second rotor (42), wherein the first rotor (41) is located on the periphery of the second rotor (42). The electric pump is provided with a hydraulic cavity (43), wherein the hydraulic cavity (43) is located between the first rotor (41) and the second rotor (42) and comprises a low-pressure cavity (431). The electric pump comprises a first inflow channel (11), wherein the first inflow channel (11) is in communication with the low-pressure cavity (431), the low-pressure cavity (431) is in communication with the first channel (40), and the first channel (40) is in communication with the second cavity (30). By means of the electric pump, a working medium can enter the second cavity from the low-pressure cavity which has a lower pressure, and oil pressure in the second cavity is lower, which is beneficial to prolonging the service life of parts of the electric pump.