Bag-in-Box Fluid Withdrawal Housing with Inclined Support Surface

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Solution Overview

Problem

Conventional bag-in-box systems leave residual liquid in the bag due to inefficient liquid removal, requiring manual squeezing, which is cumbersome and time-consuming.

Innovation Solution

A device with a housing having a vertical orientation, an inclined central section, and a lateral opening for the dosing unit, allowing complete liquid extraction through a dosing unit guided out of the housing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a flat support base is used in a rectangular box, then the bag-in-box can be easily inserted and removed, but liquid cannot be completely removed from the bag

Engineering Contradiction:
Improveinsertion and removal of bag-in-boxVSAvoidresidual liquid in bag
Core Design Contradiction:
Ease of operationVSLoss of substance

Solution Approach 1:

The support base is transformed from a flat two-dimensional surface to a three-dimensional inclined surface. The inclined support base extends downward from the rear toward the front of the housing, creating a slope that directs liquid toward the dosing unit. This dimensional change enables complete liquid removal while maintaining ease of bag insertion and removal.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Device complexity

If a flat support base is used, then the device structure is simple, but manual squeezing is required to remove residual liquid

Engineering Contradiction:
Improvestructure simplicityVSAvoidliquid removal process
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The support base is transformed from a flat two-dimensional surface to a three-dimensional inclined surface. The inclined support base extends downward from the rear toward the front of the housing, creating a slope that directs liquid toward the dosing unit. This dimensional change enables complete liquid removal while maintaining ease of bag insertion and removal.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Device complexity

If manual squeezing is required, then the device structure remains simple, but the process is cumbersome and time-consuming

Engineering Contradiction:
Improvedevice structureVSAvoidliquid removal time
Core Design Contradiction:
Device complexityVSLoss of time

Solution Approach 1:

The support base is transformed from a flat two-dimensional surface to a three-dimensional inclined surface. The inclined support base extends downward from the rear toward the front of the housing, creating a slope that directs liquid toward the dosing unit. This dimensional change enables complete liquid removal while maintaining ease of bag insertion and removal.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

4Loss of substance

If the dosing unit is led out through the lateral housing opening, then complete liquid removal is enabled, but the housing geometry becomes more complex

Engineering Contradiction:
Improvecomplete liquid removalVSAvoidhousing geometry
Core Design Contradiction:
Loss of substanceVSDevice complexity

Solution Approach 1:

The support base is divided into distinct functional sections: a rear portion that contacts the bag-in-box, an inclined central section that directs liquid flow, and a front portion that guides liquid to the dosing unit. This segmentation of the support base into functional zones enables complete liquid removal while maintaining manufacturing simplicity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The support base is transformed from a flat two-dimensional surface to a three-dimensional inclined surface. The inclined support base extends downward from the rear toward the front of the housing, creating a slope that directs liquid toward the dosing unit. This dimensional change enables complete liquid removal while maintaining ease of bag insertion and removal.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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

Enables efficient, complete liquid removal from the bag-in-box bag, enhancing user comfort and resource efficiency by eliminating the need for manual squeezing and allowing multiple refills.

Implementation Method 1

an inclined central section, wherein an imaginary straight line running along a main extension direction of the inclined central section, runs through the side housing opening and forms an angle of less than 90° with the vertical direction

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentEP4596487A1Device for withdrawing fluids from a bag-in-box bag
Publication Date: 2025.08.06 GEMPERLE REMO
  • EP4596487A1 patent drawingFigure 1~2
  • EP4596487A1 patent drawingFigure 3
  • EP4596487A1 patent drawingFigure 4

AI summary

The invention relates to a device (10a-b) for removing liquids from a bag-in-box bag (12a), having a housing (14a-b) comprising at least one side wall (16a-b) which, in a state of use, is oriented at least substantially in the vertical direction (18a-b), delimits an interior (20a-b) of the housing (14a-b) in sections and defines an upper housing opening (22a-b) via which the bag-in-box bag (12a) can be inserted in the vertical direction (18a-b) into the interior (20a-b) of the housing (14a-b), and having an intermediate floor (26a-b) which is arranged in the interior (20a-b) and forms a support surface (28a-b) for the bag-in-box bag (12a), wherein the side wall (16a-b) forms a lateral housing opening (24a-b), through which a dosing unit (30a) of the bag-in-box bag (12a) can be guided at least partially out of the interior (20a-b), wherein the support surface (28a-b) has an inclined central section (32a),wherein an imaginary straight line (34a) running along a main direction of extension of the inclined central section (32a) runs through the lateral housing opening (24a-b) and forms an intersection angle (36a) of less than 90° with the vertical direction (18a-b).