Drink cooler
From DDL Wiki
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 |
| A. 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 | - | ||
| Arm 2 | ||||||||
| 11 | Arm 2 Linkage (w/ plastic ball-in-socket joint) | 1 | 149 | Transfer motion | Steel tube crushed and welded. Hole drilled, ball-in-socket joint stamped in. | Steel | 
| |
| Arm 3 |
| |||||||
| 12 | Arm 3 linkage (w/ plastic ball-in-socket-joint) | 2 | 58 | Transfer motion | Steel | 
| ||
| 13 | Wiper Mount Pin | 2 | 16 | Transfer motion | Steel |
| ||
| 14 | Plastic Cover | 2 | 2 | Prevent fluid from seeping into linkage area | Injection Mold | Plastic | 
| |
| 15 | Screw-On Cap | 2 | 11 | Protect Wiper Mount Pin | Cast and Threaded Die | Steel | 
| |
| Arm 4 |
| |||||||
| 16 | Arm 4 linkage [Length: 20.5" (52 cm) | 1 | 177 | Transfer motion | 
| |||
| 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 | 
| ||
