Household Appliances Flashcards
Design of a refrigerator
Metal cooling cabinet with well insulate walls
Cool temperautre
Plastic drawers
Ice box
Automatic light
Door has magnetic closure
Thermostat
Plastic coated-shelves
Outer casing of enamelled steel
Parts of refrigerator
Evaporator (top)
Cooling fins (back)
Condenser (middle)
Compressor (bottom)
Thermostat & motor
Compressor
Found at base
Contains gas refrigerant
Motor forces the refrigerant into the condenser
Condenser
Cools gas refrigerant
Converts to liquid
Sent into the evaporator
Evaporator
Evaporates the liquid refrigerant into gas
Draws heat from fridge cabinet
Cabinet remains at 3-4 degrees
Refirgerant returns to compressor
Cycle starts again
Thermostat
Connescted to compressor
Maintains internal temperature at 3-4 degrees
Turns off motor when needed
Refrigerant
Draws heat from inside the fridge
Maintains the temperature between 1-4 degrees
Volatile
Advantages of a fridge
Perishables stay fresh longer
Protects food from dust & flies
Risk of food poisoning reduced
Less waste, leftovers
Shopping trips reduced
Frozen food can be stored in ice-box
Food can be frozen in a fridge-freezer
Care/Use/Cleaning
Avoid opening door unnecessarily
Wipe up spills
Store raw meat at the bottom
Cover foods like cheese and ham to prevent from drying out
If unplugged, leave door open to prevent the build up of bad odours
Modern Designs Features
Zoned Refrigerant- different temperatures in different compartments
Automatic defrost- removing built up ice
Ice/water dispensers
Humidity controlled drawers
Low humidity- prevents the rotting of fruit and vegetables that emit ethylene gas
Usually a gap in drawer to allow gas to escape
High humidity- prevents wilting or moisture loss. Keeps moisture sealed
Star Ratings
1 Star - -6 - 1 week
2 Stars- -12 - 1 month
3 Stars -18 - 3 months
4 Stars- -25- 1 year (freezes food)
