Unplug the suction of coal tub unplugs method and apply

(One) classify with exhaust law

1. Cupping jar: Use heat to bilge cold the principle that shrink, the platoon goes air. Borrow the heating power of the blaze when combustion namely, the platoon goes inside coal tub air, make form negative pressure and sorption go up at the skin, call cupping jar the law. Can divide again it is 4 kinds:

(1) throws igneous law: After be being ignited with small scrip, inside devoted canister, differ scrip is lighted, at once is in coal tub cover should unplug on place, can suck express at body.

(Law of the fire inside 2) : Clip ignition alcohol tampon with forceps, circuit is circled inside coal tub, at once is in coal tub cover should unplug on place, can have grip.

(3) sticks cotton way: The cotton that uses 1 centimeter of square together, do not want heavy panel, summary dip alcohol, stick at middle of coal tub wall, next light, overspread the place at make choice of to go up, can grip.

(4) wears igneous law: With one not easy combustion and the lump content that conduct heat, diameter 2