The objective of the beer foam manager is to allow a bartender to have his hands free when serving a beer without having to worry about the amount of foam that will form. It will only require the server to qualitatively enter the quantity required by the client. An ultrasonic distance sensor detects the amount of foam formed at the beginning of the pour- ing and when the desired level is reached, an electric motor controlled by an Arduino will initiate the rise of the plat- form supporting the glass. This will submerge the nozzle directly into the liquid and stop further foam from forming. We thus designed this device while trying to understand the physics behind the conditions required for foam formation. THE BEER FOAM MANAGER INTRODUCTION Key parameters : - Kinetic and potential energy of the beer flux at the free surface - Pressure difference between the beer and the air - The surface tension of the fluid - Improving the design from a prototype to a final product - Implement a feed-back loop to improve the control - Take full advantage of the stepper motor - Integrate the DC power supply into the design DESIGN PROCESS CONTROL SYSTEM Franz Costnatini, Erwin Etter, Tanguy Lammerant, Arthur Seres, David Sollander -Kitchen Design Contest- The sloshing is a function of the kinematic viscosity of the fluid and the amount of bub- bles layers. The foam will lead to a better stablity of the beer when stimulated. Bubbles Sloshing VERTICAL MOTION • To control foam's height in a simple and effective way LEAD SCREW • Maximum pitch to achieve high vertical speed • Small diameter to keep the design compact STEPPER MOTOR • High RPM • High precision • High torque AUTOMATION • Time saving for the bartender ULTRASONIC SENSOR • Easy to implement • Relatively high resolution: 1 cm IR REMOTE CONTROL • Choose the desired foam quantity INSTRUCTIONS: -Set distance covered (VOL+/VOL-) - Set target foam (KEY PAD) Set mode: - Automatic (POWER) - Manual (ARROW UP/ DOWN) Lead screw: diameter = 8 mm, lead = 8 mm N E M A 2 3 : torque = 1,26 Nm, ω = 600 RPM FURTHER IMPROVEMENTS - Control different types of beer and glasses - Reduce vibrations and noise - Implement a more precise detection system - Cooling system for the stepper motor John Kolinski, Pedro Reis, Selman Sakar , Tobias Schneider
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The objective of the beer foam manager is to allow a bartender to have his hands free when serving a beer without having to worry about the amount of foam that will form. It will only require the server to qualitatively enter the quantity required by the client. An ultrasonic distance sensor detects the amount of foam formed at the beginning of the pour-ing and when the desired level is reached, an electric motor controlled by an Arduino will initiate the rise of the plat-form supporting the glass. This will submerge the nozzle directly into the liquid and stop further foam from forming. We thus designed this device while trying to understand the physics behind the conditions required for foam formation.
THE BEER FOAM MANAGER
INTRODUCTION
Key parameters :- Kinetic and potential energy of the beer flux at the free surface- Pressure difference between the beer and the air- The surface tension of the fluid
- Improving the design from a prototype to a final product- Implement a feed-back loop to improve the control- Take full advantage of the stepper motor- Integrate the DC power supply into the design
DESIGN PROCESSCONTROL SYSTEM
Franz Costnatini, Erwin Etter, Tanguy Lammerant, Arthur Seres, David Sollander
-Kitchen Design Contest-
The sloshing is a function of the kinematic viscosity of the fluid and the amount of bub-bles layers. The foam will lead to a better stablity of the beer when stimulated.
Bubbles Sloshing
VERTICAL MOTION
• To control foam's height in a simple and effective way
LEAD SCREW
• Maximum pitch to achieve high vertical speed
• Small diameter to keep the design compact
STEPPER MOTOR
• High RPM • High precision• High torque
AUTOMATION• Time saving for the bartender
ULTRASONIC SENSOR
• Easy to implement• Relatively high resolution: 1 cm
IR REMOTE CONTROL
• Choose the desired foam quantity
INSTRUCTIONS:-Set distance covered (VOL+/VOL-)- Set target foam (KEY PAD)Set mode:- Automatic (POWER)- Manual (ARROW UP/DOWN)
Lead screw: diameter = 8 mm, lead = 8 mmNEMA 23: torque = 1,26 Nm, ω = 600 RPM
FURTHER IMPROVEMENTS- Control different types of beer and glasses- Reduce vibrations and noise- Implement a more precise detection system- Cooling system for the stepper motor
John Kolinski, Pedro Reis, Selman Sakar , Tobias Schneider
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