Vehicle Pump Drain Hose Layout to Block Outside Water Ingress
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle pump assemblies are prone to outside water entering the introduction chamber due to leakage from the mechanical seal, which can occur when the pump is exposed to outside water, such as muddy water, leading to potential damage.
Innovation Solution
A vehicle pump assembly with a drain hose attached to the pump, where the internal volume of the drain hose is three times the volume of the introduction chamber, and is inclined to discharge outside water effectively, reducing the likelihood of water entry into the introduction chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drain hose has a small internal volume, then the device complexity and installation space are reduced, but outside water easily enters the introduction chamber through the drain hose
Solution Approach 1:
The patent changes the volume parameter of the drain hose to three times or more of the introduction chamber volume. This parameter change creates sufficient internal space to prevent outside water from reaching the introduction chamber while maintaining a reasonable hose length and installation footprint.
2Reliability
If the drain hose is oriented to face the rear and inclined, then water discharge is facilitated and water ingress is reduced, but the device complexity increases
Solution Approach 1:
The patent orients the drain hose outlet to face the rear and inclines it to create a natural gravity-driven flow path. This positioning creates an equipotential configuration where water naturally flows from the introduction chamber through the hose to the outlet without requiring additional pumping or complex control mechanisms.
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 effectively reduces the ingress of outside water into the introduction chamber, minimizing damage and maintaining pump functionality even when exposed to external water, while also reducing the length and cost of the drain hose.
Implementation Method 1
the drain hose is continuously inclined so as to be positioned lower as extending to the outlet 52
Data Source
AI summary
A vehicle pump assembly 13 includes a pump 30 having a mechanical seal 35 sealing a cooling medium and a drain hose 50 attached to the pump 30. The pump 30 includes an introduction chamber 40 separated by the mechanical seal 35 and configured such that the cooling medium having leaked from the mechanical seal 35 is introduced thereinto, and the drain hose 50 communicates with the introduction chamber 40. The internal volume of the drain hose 50 is three times the volume of the introduction chamber 40 or more.