Laser Fusion Water Pump Casing for Airtight Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric water pumps fail to maintain airtightness due to deviations or damage of the O-ring during assembly, leading to leaks and reduced reliability.
Innovation Solution
The water pump design incorporates a motor housing, lower casing, and upper casing with fusion-coupled sides using laser fusion, ensuring reliable airtightness by irradiating a laser beam through an insertion groove to fuse the components together, while the motor housing is made of a laser-transmitting material and the casings are made of laser-absorbing materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If sealing members such as O-rings are used between casings to maintain airtightness, then assembly is simplified, but airtightness reliability deteriorates when the sealing member is deviated or chewed during assembly
Solution Approach 1:
The patent replaces the mechanical sealing system (O-rings and fastening members) with a laser fusion bonding system. The laser beam directly fuses the plastic materials of the motor housing, lower casing, and upper casing together, eliminating the need for separate sealing members and fastening mechanisms, thereby ensuring consistent airtightness without deviation or chewing issues
Solution Approach 2:
The patent changes the bonding method from mechanical contact (O-rings compressed by fastening members) to thermal bonding (laser fusion). By controlling laser power density and irradiation time, the plastic materials are melted and fused directly at the coupling surfaces, creating a permanent seal that is not affected by mechanical deformation during assembly
2Ease of repair
If traditional fastening members and sealing members are used to assemble casings, then disassembly and repair are possible, but manufacturing complexity increases and airtightness is unreliable
Solution Approach 1:
The patent merges the functions of sealing, fastening, and structural connection into a single laser fusion process. The laser beam simultaneously bonds multiple plastic components together, eliminating the need for separate sealing members and fastening members, thereby reducing overall structural complexity while ensuring reliable airtightness
Solution Approach 2:
The patent substitutes the mechanical fastening and sealing system with a thermal field-based laser fusion system. This replacement eliminates multiple components (fastening members, sealing members, and their associated structures) while achieving both structural connection and airtight sealing in a single process
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 method ensures reliable airtightness at the coupling portions and simplifies the manufacturing process, reducing the risk of leaks and improving the overall assembly efficiency.
Implementation Method 1
the upper end of the motor housing, the lower end of the first side wall, and the lower end of the second side wall are fusion-coupled with one another
Implementation Method 2
irradiating a laser beam through an insertion groove to fuse the components together
Data Source
AI summary
Provided is a water pump which may be easily manufactured and a manufacturing method thereof, the water pump including: a motor housing having a concave container shape; a lower casing including a first side wall protruding downward for a lower end of the first side wall to be in contact with an upper end of the motor housing; and an upper casing fitted to the outside of the lower casing, and including a second side wall protruding downward for a lower end of the second side wall to be in contact with the upper end of the motor housing, wherein the upper end of the motor housing, the lower end of the first side wall, and the lower end of the second side wall are simultaneously fusion-coupled with one another.