Electronic Water Pump Sealing Structure for Coolant Leak Prevention
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Solution Overview
Problem
Coolant leakage frequently occurs at the junction between the first cover plate and water pump shell in electronic water pumps, leading to increased failure rates during pre-delivery quality inspection and in-service operation.
Innovation Solution
The electronic water pump incorporates a first cover plate welded to a water pump shell with a weld seam, a sealing member arranged between the weld seam and an assembly clearance, and a base body fixed by bolted fastening, along with optional features like a sealing ring and limit sealing grooves to enhance sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the first cover plate is welded to the water pump shell and the water pump shell is fixed to the base body, then the structural strength and sealing performance are improved, but coolant leakage still occurs at the junction due to assembly clearance and weld seam imperfections
Solution Approach 1:
A sealing member is introduced as an intermediary component between the first cover plate and the base body, specifically positioned at the assembly clearance and weld seam areas. This sealing member acts as a mediator that fills gaps and prevents coolant leakage without requiring perfect welding or fitting, thus resolving the contradiction between structural strength and sealing performance.
Solution Approach 2:
The sealing solution is segmented into multiple regions: the sealing member is arranged to specifically address the assembly clearance area, while separate sealing arrangements address the weld seam area. This segmentation allows targeted sealing at different leakage-prone locations, improving overall reliability without compromising structural integrity.
2Reliability
If multiple sealing components are added to prevent coolant leakage, then sealing performance is improved, but the device complexity increases
Solution Approach 1:
The sealing member is designed to perform multiple sealing functions simultaneously: it seals both the assembly clearance between the first cover plate and base body, and the weld seam area. This multi-functionality reduces the need for separate sealing components at different locations, thereby improving sealing performance without proportionally increasing device complexity.
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
Prevents coolant leakage, reduces failure rates, and ensures smooth coolant flow by effectively sealing the assembly clearance and weld seam, thereby maintaining normal operation.
Implementation Method 1
a first sealing member arranged between the weld seam and the assembly clearance and sealing the assembly clearance
Implementation Method 2
the first cover plate is buckled over the water pump shell and welded to the water pump shell to form a weld seam
Data Source
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AI summary
The utility model discloses an electronic water pump, an electronic water pump assembly, a cooling system, and a vehicle, belonging to the technical field of electronic water pumps. The electronic water pump comprises: a first cover plate; a water pump shell provided with an isolation sleeve for installing a rotor assembly, wherein the first cover plate is buckled over the water pump shell and welded to the water pump shell to form a weld seam, and the water pump shell is butt-jointed and fixed to a base body of an assembly base to form an assembly clearance; and a first sealing member arranged between the weld seam and the assembly clearance and sealing the assembly clearance. The utility model can seal the assembly clearance, prevent liquid in the water pump shell from leaking to the outside of the water pump shell from the assembly clearance, reduce the loss of coolant, reduce the failure rate of the product, and ensure the smooth flow of coolant in the electronic water pump.