CO2 Pellet Transfer Device Preventing Wall Adhesion

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Solution Overview

Problem

CO2 pellets in existing apparatuses tend to adhere to inner wall surfaces, leading to clogging and interruptions in the production process before they are delivered into a pressurized gas stream for surface cleaning applications.

Innovation Solution

A fluid mechanical transfer device is introduced between the compressing and delivery devices to convey CO2 pellets, utilizing a transfer gas stream to prevent adhesion and detach pellets that are stuck, ensuring continuous and defined delivery of high-strength CO2 pellets into a pressurized gas stream.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If CO2 pellets are conveyed through a transfer device, then continuous delivery is achieved, but adhesion to inner wall surfaces occurs causing clogging

Engineering Contradiction:
Improvecontinuous delivery of CO2 pelletsVSAvoidclogging of transfer device
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

A fluid mechanical transfer device using a transfer gas stream is introduced as an intermediary medium to convey CO2 pellets from the compressing device to the delivery device. The transfer gas prevents direct contact between pellets and wall surfaces, eliminating adhesion and clogging while ensuring continuous delivery.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent employs pneumatic principles by using a transfer gas stream to convey CO2 pellets through the transfer device. The pressurized gas flow transports pellets without mechanical contact, preventing adhesion to inner wall surfaces and ensuring reliable continuous operation.

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Ease of operation

If CO2 pellets are delivered into pressurized gas stream, then surface cleaning is enabled, but adhesion to delivery device walls occurs

Engineering Contradiction:
Improvesurface cleaning capabilityVSAvoidadhesion to delivery device walls
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The transfer gas stream acts as an intermediary that maintains pellets in a suspended state during conveyance to the delivery device. This prevents pellets from adhering to delivery device walls while still enabling their delivery into the pressurized gas stream for surface cleaning applications.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If transfer device is added between compressing and delivery devices, then pellet adhesion is prevented, but device complexity increases

Engineering Contradiction:
Improveprevention of pellet adhesionVSAvoidapparatus structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The transfer device utilizes pneumatic principles with a transfer gas stream to convey pellets, avoiding complex mechanical conveyance systems. This pneumatic approach prevents adhesion while maintaining relatively simple device architecture compared to mechanical alternatives.

Inventive Principle:
Principle #29Pneumatics and hydraulics

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 solution effectively minimizes the risk of clogging and ensures a continuous, efficient delivery of high-strength CO2 pellets, preventing adhesion to transfer device walls and allowing for a compact apparatus design.

Implementation Method 1

The apparatus comprises a fluid mechanical transfer device for conveying CO2 pellets from the compressing device to the delivery device

Methodology Applied
Scientific EffectFluid mechanical transfer:

Implementation Method 2

The transfer device is arranged or formed between the compressing device and the delivery device

Methodology Applied
Scientific EffectFluid stream detachment:

Data Source

PatentUS20230415306A1Apparatus and method for producing co2 pellets from co2 snow, and cleaning appliance
Publication Date: 2023.12.28 ALFRED KARCHER SE & CO KG
  • US20230415306A1 patent drawing
  • US20230415306A1 patent drawing
  • US20230415306A1 patent drawing

AI summary

The invention relates to an apparatus for producing, in particular high-strength, CO2 pellets from CO2 snow, in particular for a cleaning appliance for blasting surfaces to be treated with a mixed stream of a pressurized gas and CO2 pellets, wherein the apparatus comprises a compressing device for compressing CO2 snow to form CO2 pellets and a delivery device for delivering the CO2 pellets into a pressurized gas stream, wherein the apparatus comprises a fluid mechanical transfer device for conveying CO2 pellets from the compressing device to the delivery device and wherein the transfer device is arranged or formed between the compressing device and the delivery device.Furthermore, an improved cleaning appliance and an improved method for producing CO2 pellets from CO2 snow are proposed.