Detachable Pump Head Housing for Easier Pressure Washer Maintenance
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Solution Overview
Problem
Existing high-pressure cleaning devices require complete disassembly of the motor-pump unit for maintenance of the pump head, which is cumbersome and inefficient, and do not allow for easy transport due to their design.
Innovation Solution
A high-pressure cleaning device with a multi-part housing design, where the second housing part is detachable and forms a trough-like receptacle for the pump head, allowing maintenance without disassembling the entire unit, and features a U-shaped push bar with legs for easy transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the housing is designed as a single integrated unit, then the structural strength and stability are improved, but the ease of maintenance deteriorates because complete disassembly is required for pump head maintenance
Solution Approach 1:
The housing is divided into a first housing part and a second housing part that are detachably connected. The second housing part can be separated from the first housing part to provide access to the pump head for maintenance, while the first housing part remains attached to the motor-pump unit. This segmentation allows maintenance without complete disassembly, resolving the contradiction between structural integrity and ease of repair.
2Ease of repair
If the housing is designed with multiple detachable parts, then the ease of maintenance is improved, but the device complexity increases
Solution Approach 1:
The housing is segmented into exactly two parts (first housing part and second housing part) with a simple detachable connection. This minimal segmentation provides maintenance access while avoiding excessive complexity. The detachable connection allows the second housing part to be removed for pump head maintenance while the first housing part remains attached to the motor-pump unit, achieving ease of repair without significant structural complexity.
3Reliability
If the pump head is enclosed within the housing, then the protection and stability are improved, but the ease of operation for maintenance deteriorates
Solution Approach 1:
The housing is segmented into a first housing part that remains attached to the motor-pump unit and a second housing part that can be detached. The second housing part provides protection when attached, but can be removed to provide direct access to the pump head for maintenance operations, thus resolving the contradiction between protection and ease of maintenance access.
Solution Approach 2:
The second housing part is extracted or removed from the assembly to provide access to the pump head. This extraction allows maintenance personnel to reach the pump head components without dismantling the entire housing or motor-pump unit, improving ease of operation for maintenance while the housing remains largely intact.
4Productivity
If the housing is designed as a compact single unit, then the transport efficiency is improved, but the ease of manufacture deteriorates due to manufacturing constraints
Solution Approach 1:
The housing is segmented into two detachable parts that can be manufactured separately and then assembled. This segmentation allows each part to be manufactured using standard processes without complex tooling or specialized manufacturing constraints, while the detachable design enables compact transport configuration. The first housing part attaches to the motor-pump unit and the second housing part attaches to the first, providing both manufacturability and transport efficiency.
Data Source
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AI summary
The invention relates to a high-pressure cleaning device (10; 120) comprising a motor pump unit (18), which has a motor (20) and a pump (22), wherein said pump (22) has a pump head comprising a first connecting element (26) and a second connecting element (28), said high-pressure cleaning device further comprising a housing (12), which encloses the motor pump unit (18). To allow maintenance work on the pump head (24) to be carried out more easily, the invention proposes that the housing (12) comprises a first housing part (14) and a second housing part (16), wherein the first housing part (14) has two half shells (34, 36), which together enclose the motor pump unit (18) in an area facing away from the pump head (24) in the circumferential direction, and on which the motor pump unit (18) is mounted, wherein the second housing part (16) is detachably connected to the first housing part (14) and forms a trough-like recess (62) into which the pump head (24) is inserted.