2. What is a Washing Machine
• A washing machine
is an machine that
washes clothes,
linen
• Was made to help
wash clothes easier
3. Steps to Cleaning Clothes
• Decide on: Load size
(small, medium, large, x-
large)
– Temp
– How machine should
agitate
– Time
4. Steps to Cleaning Clothes
• Fill tub with clothes;
Fills with water;
Agitator starts to spin;
• After agitating
– Drains water
– Spins clothes
– Refills; agitates
more
– Drains
– Spins more.
5. History of the Machine that
Washes
• Before washing
machines people
cleaned clothes in the
stream
• Then it’s beat with
rocks or they scrubs
clothes clean on a
washboard.
6. History of the Machine that
Washes
• First electronic:
American - Alva J.
Fisher - 1901
– Had Electronic
vertical-tube
machine with built-in
turbo washers or
Vertical axle fitted
with blade. Alva J. Fisher - “Thor”
7. History of Washing Machine
• Replaced steam
boiler and the
washtub; wooden bins
that was filled with
soap hot water
• First mechanical
washing machine
used heavy blades
8. History of Washing Machine
• Principle of tossing
clothes inside in a
rotating cylinder
– Used in 1850 in a
English laundry.
– Used in 1840 by the
French: Industrial
model, double
sheathing, 4
compartments,
driven by a crank.
1915 Crank to turn agitator
9. Inside of a Washing Machine
• Two Steel Tubs
– Outer = Seals
water. Mounted so
that inner can move
without banging.
– Inner = Holds
clothes and with the
agitator in the
middle with holes
around the side of
the tub. Attached to
gearbox
10. Inside a Washing Machine
• There are 3 pulley
– One side of frame
moves up
– Other side frame
goes down
• Has Damping System
– Uses friction to
absorb force of the
dangling pulleys
11. Inside a Washing Machine
• Each four corner has
mechanism that:
– Works like disc brake
– Attached to spring
– Squeeze two pads
against metal plate
– Attached to black
frame
12. Plumbing
• Jobs
– Fills washing
machine with
correct
temperature of
water
– Re-circulate water
from bottom of the
wash tub back to
the top, during
wash cycle
13. Plumbing• Hook for two water
lines on back
– Cold
– Hot
– Hooked to the body
of the solenoid
valve
• Solenoid valve
– Feed into a single
hose
– Hot valve, cold
valve or both valve
will open
14. Plumbing • Before hose release
water into tub, it is
send through anti-
siphon device
– Prevent water from
being sucked back
into the water line
– White plastic device
has big opening that
allows air in
– Suction would only
get air, not water
15. Plumbing
• Water Inlet
– Water enters that
way
– Nozzle to the right:
Overflow port
• Connected to
pipes that dump
water onto floor
• Goes to floor
instead of the tub
and motor
16. Pump
• Re-circulates water
and drains it
• Has 2 separate
pump in one
– Bottom half: Hooked
to drain line
– Top half: Re-
circulates wash
water
17. Pump
• Vanes of the bottom
layer of the pump:
Push water around
• The pump can
reverse direction
– Spins different way
while doing different
jobs.
18. Pump
• Clutch is hooked up to
pump
• Drain hose loops all
the way to the top of
machine
• One end is hooked
to bottom of tub
• Open to
atmosphere
19. Drive Mechanism • A piece of rubber
seals the outer tub
to the gearbox
• Has 2 jobs
– Agitate clothes:
Moving them back
and forth inside tub
– Spin Tub to force
water out
20. Inside the Gearbox
• Pulley
• Pie-shaped gears
has link on it
• Washer goes to spin
cycle - locks up,
everything spins at
same speed
• Gears - angled teeth
21. Control
• Cycle switch
• Speed and temp.
control switch
• Water level control
switch plumbing
• Designed before
micro-controllers
were being used in
appliances
22. About Me
• I love music, especially
hardcore metal rock. Some
bands are: Ill Nino,
Dragpipe, Bush, Boiler
Room, Brand New,
Motograter, Project 86,
Powerman 5000, Drowning
Pool, Full Devil Jacket,
Puya, Adema, Clutch, Coal
Chamber, The F-Ups, The
Kittie, Korn, SOAD, The
Union Underground,
Sworn Enemy and
Mushroom Head, plus
more.
The Union
Underground
Brand New
Dragpipe
Ill Nino
Boiler Room
Motograter
Project 86
Powerman
5000
KORN
23. Bibliography
• “Washing Machine.” The World Book
Encyclopedia. 2003ed.
• Walerie-Anne Giscard d’Estaing. The Second
World Almanac Book of Invention. New York;
Pharos Book, 1986.
• Karim Nice. “How Washing Machine Work.”
How Stuff Works. 1998-2005. How Stuff
Works. May 3, 2005
<home.howstuffworks.com/washer.html>
