-as of [2 DECEMBER 2025]-
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-PORTABLE AIR CONDITIONERS-
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-JUST AS “INDUCTION” TRANSFERS “ELECTRIC CHARGE” CREATED BY “STEAM TURBINES” INTO YOUR HOME, “INDUCTION” CAN BE USED TO CONVERT “ELECTRIC CURRENT” FROM YOUR HOME’S OUTLETS TO “MECHANICAL ENERGY” THAT SPINS A FAN’S BLADES-
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-[2D] —> [3D]-
-extend both the [circular center] + [blade planes] to an arbitrary “thickness” in the [3rd dimension]-
-decide whether the fan will spin [clockwise / counter-clockwise]-
-pick a blade-
-if spinning clockwise, the [right edge] is the [leading edge]-
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-IMAGINE YOU ARE FACING A [CLOCKWISE ROTATING FAN]-
-THE [FAN BLADES] CAN BE “TILTED” SO THAT EITHER THE [LEFT/RIGHT] SIDE OF THE [BLADE] IS CLOSER TO YOU-
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-IF “LEFT BLADE SIDE” IS CLOSER TO YOU, THE BLADE IS “ANGLED CLOCKWISE”-
-IF “RIGHT BLADE SIDE” IS CLOSER TO YOU, THE BLADE IS “ANGLED [COUNTER-CLOCKWISE]”-
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-IF “LEFT BLADE SIDE” IS CLOSER TO YOU + THE FAN IS SPINNING “CLOCKWISE”, THE [RIGHT SURFACE] OF THE [BLADE] IS THE “LEADING EDGE”–
-THE “LEADING EDGE” PUSHES AIR-
-THE [LEFT SURFACE] OF THE [BLADE] IS THE “TRAILING EDGE”-
-THE “TRAILING EDGE” PULLS AIR-
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-IF THE LEADING EDGE IS TILTED TOWARDS YOU, ROTATING THE AXIS ALONG WITH “LEADING EDGE” WILL PUSH AIR TOWARDS YOU-
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How the fan actually spins and moves air
Motor:
how the electricity makes the shaft turn
Inside a typical AC fan (like in a portable AC):
Stator coils (fixed copper windings) are powered by AC from the outlet.
The AC creates a rotating magnetic field.
Inside that is a rotor (often a “squirrel-cage” of aluminum bars).
The changing magnetic field induces currents in the rotor (induction again), which in turn feel a
magneticforce and start spinning.
Hartzell Air Movement
The rotor is attached to the fan hub, so the blades spin with it.
So: outlet → motor coils → spinning magnetic field → spinning metal rotor → spinning blades.
You don’t have to model motor internals in huge detail unless you want to;
“AC in coils → rotating magnetic field → rotor turns” is enough for most mental models.
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How the fan actually spins and moves air
3.1 Motor:
how the electricity makes the shaft turn
Inside a typical AC fan (like in a portable AC):
Stator coils (fixed copper windings) are powered by AC from the outlet.
The AC creates a rotating magnetic field.
Inside that is a rotor (often a “squirrel-cage” of aluminum bars).
The changing magnetic field induces currents in the rotor (induction again), which in turn feel a magnetic force and start spinning
Hartzell Air Movement
The rotor is attached to the fan hub, so the blades spin with it.
So: outlet → motor coils → spinning magnetic field → spinning metal rotor → spinning blades.
You don’t have to model motor internals in huge detail unless you want to; “AC in coils → rotating magnetic field → rotor turns” is enough for most mental models.
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3.2
Blades:
how tilt + spin = airflow
Forget left/right for a second.
Any fan blade has:
A direction of rotation
(clockwise or counterclockwise when you look at it)
A pitch (tilt) – think of it like a tiny airplane wing or a screw thread
The key words:
Leading edge = edge that meets the air first as the blade spins
Trailing edge = the edge that follows behind
You can always identify them like this:
Freeze the fan in your head.
Draw an imaginary arrow showing which way it spins.
On each blade, the edge that is ahead in that direction is the leading edge. The other is the trailing edge.
The blade’s pitch is what makes air move along the axis (through the fan) instead of just spinning in circles.
A good mental model:
A fan blade is a screw moving through air.
Turning the fan one way is like turning a screw into wood; turning it the other way backs it out.
Whichever way that “screw” would move, that’s the direction the air is pushed.
So:
If the fan is designed to blow air toward you, then as you face it:
The leading edge is slightly closer to you than the trailing edge.
As that edge sweeps through the air, it “ramps” the air toward you, creating higher pressure on the back side and lower pressure on the front side, so air flows your way.
PERFECT
+1
Your text about “leading edge pushes / trailing edge pulls” is a decent intuitive phrasing, as long as you remember that in reality the blade surfaces create a pressure difference across the whole blade – not two totally separate actions
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How to read them:
Axial fan component diagrams (the first couple images)
Show you the front view: hub, blades, motor, and arrows showing air flowing straight through in an axial direction.
You can see the blade pitch – they’re not flat; each blade is twisted like a propeller.
Side-view airflow diagram (one of the middle ones)
Shows suction on one side and discharge on the other, with arrows parallel to the shaft.
Portable AC schematic (last image)
Shows how the fan(s) pull room air across the cold evaporator coil and push warm air out through the hot condenser side.
If you want, next step we can:
Take one specific diagram (e.g., the “Axial fan airflow” sketch),
And I’ll annotate it in words exactly how it lines up with your “clockwise fan, left side closer” language so you can tweak your blog text without overthinking the geometry
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ok so we’ve got the portable air conditioner plugged in. electric current is spinning fan to create airflow.
where is the air coming from and what is it moving towards?
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-fan pulls in “warm room air” through “intake grill”-
-cold evaporator coil-
(which contains the refrigerant that absorbs heat)
-heat removed from air-
-cooler/drier air is blown back into room-
-the refrigerant that absorbs the room airs “heat” is sent to the “hot condenser coil”-
-the [exhaust hose] dumps the heat outside-
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*👨🔬🕵️♀️🙇♀️*SKETCHES*🙇♂️👩🔬🕵️♂️*
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💕💝💖💓🖤💙🖤💙🖤💙🖤❤️💚💛🧡❣️💞💔💘❣️🧡💛💚❤️🖤💜🖤💙🖤💙🖤💗💖💝💘
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*🌈✨ *TABLE OF CONTENTS* ✨🌷*
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🔥🔥🔥🔥🔥🔥*we won the war* 🔥🔥🔥🔥🔥🔥
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