BACKGROUND

Theory

For centuries, people on sea voyages washed their clothes by placing the dirty laundry in a strong cloth bag, and tossing it overboard, letting the ship drag the bag for hours. The principle was sound: forcing water through clothes to remove dirt

The earliest manual washing machines imitated the motion of the human hand on the washboard, by using a lever to move one curved surface over another and rubbing clothes between two ribbed surfaces. This type of washer was first patented in the United States in 1846 and survived as late as 1927 in the Montgomery Ward catalogue. The first electric clothes washers, in which a motor rotated the tub, were introduced into America about 1900. The motor was not protected beneath the machine and water often dripped into it causing short-circuits and jolting shocks. By 1911, it was possible to buy oscillating, cylinder, domestic washing machines with sheet metal tubs mounted on angle-iron frames with perforated metal or wooden slat cylinders inside.

Starting in the 1920s, white enameled sheet metal replaced the copper tub and angle-iron legs. By the early 1940s, enameled steel was used and sold as being more sanitary, easier to clean and longer lasting than the other finishes. The sheet-metal skirt was also designed to extend below the level of the motor mount. In the early 1920s, a number of Canadian machines were offered with built-in gas or electric water heaters. By the 1930s, domestic water heaters were in many homes and the washing machine heater was of little use. The addition of a motor-driven drain pump at this time moved the machine one step closer to complete automaticity. The next development of the washing machine was the fitting of a clock timing device which allowed the machine to be set to operate for a pre-determined length of wash cycle. Now, the operator no longer needed to constantly monitor its action. By the early 1950s, many American manufacturers were supplying machines with a spin-dry feature to replace the wringer which removed buttons, and caused accidents involving hair and hands. In 1957, GE introduced a washing machine equipped with 5 push buttons to control wash temperature, rinse temperature, agitation speed and spin speed.

Research

If there's one household appliance most of us simply could not do without, it's the clothes washer. If you've ever been without your machine for a few days or weeks, you'll know just how hard it is to wash clothes by hand. So we inspired to develop a new kind of washing machine that would surely help people to make their life more comfortable. The “Automatic Washing Machine” is a kind of washing machine that completes the entire clothes washing cycle without any effort from the user. It will rinse, wash, agitate, and spin dry clothes all on its own. And buzz indicating that it’s done

ProceduresAutomatic Washing Machine

1. You put your clothes in the machine then put detergent and fabricon before start.2. You set the program you want and switch on the power. 3. The programmer fill the water valves enter the machine until it reach the max level, the programmer switches off the water valves.4. After it stop, the tray holding the detergent will open and the controls. 5. Will pour onto the water. After it get emptied, it will be automatically closed. 6. After the tray closed, the machine will start mixing for 15 minutes. 7. And stop for 10 seconds and continue to mix for 15 minutes again.8. After it stop for the second time, drain valve automatically.9. Fill another water then stop after reach the maximum level. Then mix for 5 minutes, drain. It will repeat for 3x.10. After it drain for the 3rd time, Fill another water that would stop when it reach the low level.11. The fabricon that inside its own compartment will open and close when its get emptied.12. Mix for 1 minute and stop for atleast 5 minutes. Then drain automatically.13. Dryer will start and buzz, indicating that its done.

Test and Evaluate

Apparatus

Automatic Washing Machine is an electrical appliance that controls all aspects of clothes washing. An Automatic Washing Machine can hold the maximum of 5Kg of clothes. Clothes should put on the machine before starting the process. The detergent must be put on the compartment provided for it. In every 1Kg, 25ml of fabricon.

FindingsData

FHL(Float High Level) is a switch/sensor that reach maximum level of the water.FLL(Float Low Level) is a switch/sensor that detect minimum level of the water.Counter (Set) is a device that counts automatically and can be reset .Timer is a device that can be preset to start or stop something at a given time or that sound after a set period of time.

Input and Output Devices

Input/Contacts Timer/Counter Output

0.00 Start T0000 15 minutes mix 100.0 Fill Water (Valve)

0.01 FHL(sensor) T0001 10 seconds stop 100.1 Drain (Valve)

0.02 FLL(sensor) T0002 1 minute mix 100.2 Fill Detergent (Valve)

0.03 Stop T0003 Standby (timer) 100.3 Fill Fabricon (Valve)

0.04 Reset T0004 5 minutes stop 100.4 Buzz

0.05 FEL(sensor) C0000 3 time (set) 100.5 Motor Rotate

0.06 FML