Roller Pump Hose Guide with Relief Widenings to Reduce Wear and Stress
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Solution Overview
Problem
Roller pumps in beverage preparation devices suffer from constant wear and stress on fluid hoses due to elastic deformation during operation, which reduces their service life and complicates installation and replacement.
Innovation Solution
A roller pump design with a hose guide featuring relief widenings and a movable carriage to absorb tensile and compressive forces, combined with a molded hose having securing projections that engage with the housing, reduces wear and facilitates easy installation and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a roller pump is used to pump milk through a fluid hose, then the pumping function is achieved with food-safe handling, but the fluid hose experiences constant wear and stress reducing its service life
Solution Approach 1:
The patent applies beforehand cushioning by introducing a carriage that can move in a compensation direction to absorb tensile and compressive forces on the fluid hose before these forces cause damage. The carriage acts as a protective element that pre-absorbs mechanical stress, preventing direct transmission of forces to the hose, thereby extending its service life while maintaining the roller pump's food-safe pumping function
2Device complexity
If a roller pump with fixed hose guide is used, then the structure is simple, but installation and removal of the fluid hose is difficult
Solution Approach 1:
The patent applies dynamics by making the carriage movable in a compensation direction rather than fixed. This dynamic element allows the hose guide to adapt during installation and removal operations, enabling easy hose replacement while maintaining overall structural simplicity. The movable carriage compensates for position variations and facilitates hose insertion/extraction without complicating the basic roller pump structure
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 extends the lifespan of fluid hoses by minimizing wear and stress, while allowing for easy assembly and disassembly, and integrates heating and frothing functions within the pump.
Implementation Method 1
the elastic deformation during compression and relaxation to generate the pumping effect
Data Source
Figure 1~2
Figure 3~5
AI summary
The invention relates to a roller pump (01) for a milk module for beverage preparation devices, comprising a housing (02) in which a hose guide (12) for a flexible fluid hose (07), preferably a milk hose, is formed, and a rotor (09) with rollers (14) or sliding shoes arranged thereon for sectionally radially inner contact with the fluid hose (07). According to the invention, the hose guide (12) has one, preferably several, particularly preferably two, relief widenings (13) shaped such that complementarily designed securing projections (14, 15) of the fluid hose (07) can engage in the relief widenings (13) and, when inserted, bring about tension and/or pressure relief of the fluid hose (07).