Vacuum Unit Silencer Layout to Prevent Exhaust Air Interference

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Solution Overview

Problem

Existing vacuum units have complex structures that hinder efficient vacuum tapping and silencing, leading to potential interference from exhaust air jets during handling operations.

Innovation Solution

The vacuum unit design features a silencer housing separate from the base body, with the vacuum and air exhaust openings oriented 90 degrees apart, allowing for compact and effective silencing without interfering with handling operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the vacuum tapping opening and air exhaust opening are oriented in the same direction, then the structure is simpler, but the exhaust air jet interferes with handling operations

Engineering Contradiction:
Improvestructural complexityVSAvoidexhaust air interference
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The air exhaust opening is oriented perpendicular to the main axis (in a different dimension/direction) while the vacuum tapping opening maintains its orientation along the main axis. This spatial separation in different directions eliminates the interference between exhaust air and vacuum tapping operations while maintaining structural simplicity.

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

2Volume of moving object

If the silencer housing is integrated with the base body, then the structure is more compact, but the vacuum tapping and air exhaust openings cannot be optimally oriented

Engineering Contradiction:
Improveoverall sizeVSAvoidopening orientation flexibility
Core Design Contradiction:
Volume of moving objectVSEase of operation

Solution Approach 1:

The device is segmented into a base body and a separate silencer housing that can be independently oriented and positioned. This allows the silencer housing to be rotated or positioned such that its air exhaust opening is perpendicular to the main axis, while the base body maintains the vacuum tapping opening along the main axis, achieving optimal orientation without compromising compactness.

Inventive Principle:
Principle #1Segmentation

3Object-generated harmful factors

If the air exhaust channel has a long path through the silencer housing, then silencing is more effective, but the device length increases

Engineering Contradiction:
Improvenoise levelVSAvoiddevice length
Core Design Contradiction:
Object-generated harmful factorsVSLength of stationary object

Solution Approach 1:

The air exhaust channel is routed in a perpendicular direction relative to the main axis, extending in a different dimension rather than lengthening the device along the main axis. This allows for an effective silencer path length while maintaining a compact overall device footprint in the main direction.

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

This design enables efficient vacuum tapping and silencing, minimizing exhaust air interference during handling, while maintaining a compact structure and facilitating easy assembly and control of vacuum generation.

Implementation Method 1

compressed air fed into the air injection channel flows through the ejector unit, generating a vacuum in a suction zone

Methodology Applied
Scientific EffectCompressed air flow through ejector unit: Jet

Implementation Method 2

generating a vacuum in a suction zone arranged between the suction nozzle and the capture nozzle

Methodology Applied
Scientific EffectVacuum generation through pressure difference: Pressure Gradient

Implementation Method 3

The compressed air exiting the suction nozzle flows through an air exhaust channel passing through a silencer, so that the air exhaust noise of the compressed air exiting an air exhaust opening is minimized

Methodology Applied
Scientific EffectNoise minimization through silencer: Acoustic Absorption

Data Source

PatentUS12422054B2Vacuum unit
Publication Date: 2025.09.23 FESTO AG & CO KG
  • US12422054B2 patent drawing
  • US12422054B2 patent drawing
  • US12422054B2 patent drawing

AI summary

A vacuum unit having at least one vacuum generator extending along a main axis and comprising a base body, further having a silencer housing containing a silencer. An ejector unit extends in the base body and an ejector axis is oriented parallel to the main axis and a suction zone of the ejector unit communicates via a vacuum channel with a vacuum tapping opening, and an air exhaust channel of the ejector unit extends through the silencer housing and has a deflected course through 90 degrees in the silencer housing and opens out to the environment with an air exhaust opening. The vacuum tapping opening is formed on an end face of the silencer housing facing away from the base body in the main direction and wherein the air exhaust opening is also formed on the silencer housing with an orientation perpendicular to the main axis.