Adjustable Pump Housing for Tolerance Compensation and Sealing
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Solution Overview
Problem
Existing pumps face challenges in achieving a compact design with reliable sealing properties and cost-effective manufacturing while accommodating manufacturing tolerances and varying operational conditions in limited motor vehicle spaces.
Innovation Solution
A pump housing with a movable housing member and coupling device allows for adjustable axial length, using force storage members to compensate for tolerances and maintain sealing under pressure and thermal conditions, featuring a snap-in connection for easy assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pump housing is designed with a fixed structure, then the manufacturing is simpler, but it cannot compensate for manufacturing tolerances and varying operational conditions
Solution Approach 1:
The housing member is designed to be movable relative to the housing body along the longitudinal direction, allowing dynamic adjustment to compensate for manufacturing tolerances and operational variations while maintaining sealing properties
Solution Approach 2:
The axial length of the pump housing is made variable through the movable housing member, enabling the structure to adapt to different installation depths and conditions without compromising sealing integrity
2Volume of moving object
If the pump housing is made compact for limited installation space, then it fits better in motor vehicles, but maintaining reliable sealing becomes more difficult
Solution Approach 1:
The movable housing member allows the compact pump housing to maintain reliable sealing by dynamically adjusting its internal dimensions to accommodate tolerance variations and operational conditions despite the limited overall size
3Reliability
If the housing member is made movable to compensate for tolerances, then sealing reliability improves, but the device complexity increases
Solution Approach 1:
The pump housing is divided into a housing body and a separate movable housing member coupled through a coupling device, allowing the sealing function to be isolated and optimized independently while maintaining overall structural integrity
Solution Approach 2:
The coupling device acts as an intermediary mechanism between the housing body and housing member, enabling controlled relative movement while maintaining the fluid-tight connection necessary for sealing
4Adaptability or versatility
If the pump housing is designed with adjustable axial length, then it adapts to varying installation conditions, but the manufacturing cost increases
Solution Approach 1:
The adjustable axial length is achieved through the movable housing member that can shift position along the longitudinal direction, providing adaptability to different installation depths through a relatively simple mechanical arrangement
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
Ensures functional reliability and cost-effective production of pumps by adapting to varying installation depths and conditions, maintaining sealing integrity and operational efficiency.
Implementation Method 1
using force storage members to compensate for tolerances and maintain sealing under pressure and thermal conditions
Data Source
AI summary
A pump housing for accommodating a pump unit, in particular a rotary pump, the pump housing being configured to be inserted at least partially into an external pump receptacle in an operating configuration, including a housing body having a receiving space into which the pump unit can be inserted and having an end-face access opening that forms an access to the receiving space, and including a housing member that can be coupled to the housing body in order to close the end-face access opening of the housing body in a fluid-tight manner, wherein a coupling device is provided, by means of which the housing member can be coupled to the housing body such that the housing member can be moved relative to the housing body along a longitudinal direction of the pump housing in the operating configuration.