Drink cooler

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Revision as of 02:31, 9 February 2012

Executive Summary:

Bill of Materials:

Description of Product

The device is used for cooling carbonated beverages quickly. It works for a single can or 12 ounce glass bottle, and can cool a beverage down to 33 degrees Fahrenheit in between 2 and 6 minutes, depending on the beverage and container. The device is about the size of a small toaster and runs off of an AC power supply. The majority of the device is taken up by a reservoir chamber with a spinning roller. All electronics, controls, and actuation mechanisms are beneath or behind the reservoir, sealed away from moisture. Cooling is accomplished by forced convection between the beverage and an ice water slurry. Before operation, the device is filled with ice and water, creating a slurry near 33 degrees Fahrenheit. A single motor spins a roller and turns a small turbine. The roller is a long metal shaft which runs the length of the device. It has a plastic coating to prevent corrosion, and has rubber rings at regular intervals along its length. These rubber rings are what contact the beverage container and force it into motion. The roller spins the beverage at a fixed rate for a set time interval. The time interval is set by a simple microcontroller which takes an input from a four-way switch. This switch is changed by mechanical motion of a rotating dial, which is the user control interface. This allows the switching of the device from off to one of three time intervals: 2 minutes, 4 minutes, and 6 minutes. Setting the dial to one of the three time settings turns the device on for that prescribed amount of time. The motor driven turbine is four flanges projecting from a plastic disk, which spins forcing water from the reservoir up a pipe and out a spout at the top of the device. Though the water does not exit under high pressure or velocity, the spinning of the beverage container causes it to move with high relative velocity to the beverage, thus increasing the effects of the forced convection. The reservoir has a clear plastic lid to seal it during the chilling process, and the latch of the lid triggers a limit switch to prevent the device from running while it is open.

Dissection Table

Bill of Materials
Part Number Sub-Assembly Part Name Quantity Weight (in g) Function Manufacturing Process Material Image
Water Spout Assembly


1 Spout 1 5 Ejects water that is pumped up Injection Molding Plastic


2 Screw 2 < 1 Fastner Purchased Part Steel


3 Washer 2 <1 - Molding Rubber


Bottom Assembly


4 Rubber Rest 6 < 1 Prevents shaking of the overall structure Molding Rubber


5 Screw 8 < 1 Fastner Purchased Part Steel


6 Bottom Cover 1 121 Covers the lower portion of the machine Injection Molding Plastic


7 Spring 2 < 1 Damps vibration of the machine Extrusion and Coiling Steel


8 Sealant Gel - - Prevents leakage of water - -


Rotary Bar Assembly


9 Plastic Bar 1 16 Rotates cans/bottles once place Injection Molding Plastic


10 Screw 2 < 1 Fastner Extrusion and Coiling Steel


11 Holder 1 < 1 Keeps bar in palce Injection Molding Plastic


12 O rings 7 < 1 Increases friction Molding Rubber


Circuiting - Electronics


13 Plastic Timer 1 21 Varies how long the motor runs Injection Molding Plastic


14 Spring 1 < 1 Extrusion and Coiling Steel


15 Circuit Board 1 43 Contains the controlling components Assembled -


16 Screw 1 < 1 Fastner Purchased Part Steel
17 Metal Piece 1 < 1


18 Limit Switch 1 7 Ensures machine does not operate until lid is closed Assembled -
Lid Assembly
19 Lid 1 27 Covers the top of the product Injection Molding Plastic


20 Torsion Spring 2 < 1 Automatically opens lid if not closed Extrusion and Coiling Steel


21 Screw 2 < 1 Fastner Purchased Part Steel


22 Plastic Casing 2 < 1 Forms a casing for the torsional springs Injection Molding Plastic


23 White Plastic Pieces 2 2 Holds torsional springs in place Injection Molding Plastic


24 Spring 2 < 1 Extrusion and Coiling Steel


25 Button 1 < 1 Clicks when lid is shut Injection Molding Plastic
Bottom Drain Assembly


26 Drain 1 Water flows from here to the pump Injection Molding Plastic
27 Drain Cap 1 4 Prevents ice from entering Injection Molding Plastic


28 Screw 2 < 1 Fastener Extrusion and Coiling Steel


Housing of the Entire Item


29 Housing 1 697 Houses the product Injection Molding Plastic


Other


17 Top Washer 1 1 Steel


Gear Casing


18 Gear Casing Cover Screws 4 <1 Attach cover to casing Die Steel


19 Drivetrain Mounting Bolts 3 5 Mount drivetrain to base Die Steel
20 Gearbox 1 - Multiply motor torque Injection Molding Plastic
Motor


21 Motor Mounting Bolts (w/ Lock Washer) 4 5 Mount motor to base Die Steel


22 Motor Mounting Nuts 4 3 Mount motor to base Tapping Steel


23 Motor 1 - Convert electric current via EMF to rotation of a linear worm gear Standard purchased part


Windshield Wiper


24 Wiper 2 108 Rotate about pin and sweep across windshield Plastic


25 Blade 2 86 Remove water or other debris from windshield Rubber
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