Dirt collection chamber with a recessed column
View Patent ↗A surface cleaning apparatus comprises an air flow path extending from a dirty air inlet to a clean air outlet and a suction motor. The surface cleaning apparatus may comprise a cyclone chamber in the air flow path. The cyclone chamber may be comprise a cyclone chamber first end and a cyclone chamber second opposed end, a cyclone air inlet, a cyclone air outlet and a cyclone chamber wall. The surface cleaning apparatus may comprise a dirt collection chamber having a dirt collection chamber first end, a dirt collection chamber second opposed end and an outer longitudinally extending sidewall. The outer longitudinally extending sidewall may have at least one recess provided therein.
1. A surface cleaning apparatus comprising:
(a) an air flow path extending from a dirty air inlet to a clean air outlet and including a suction motor;
(b) a cyclone chamber provided in the air flow path and comprising a cyclone chamber first end and a cyclone chamber second opposed end, a cyclone air inlet, a cyclone air outlet and a cyclone chamber wall; and,
(c) a dirt collection chamber having a dirt collection chamber first end, a dirt collection chamber second opposed end and an outer longitudinally extending sidewall, the outer longitudinally extending sidewall having an inner surface and at least one recess, each recess extending longitudinally and having an upstream side and a downstream side, each recess extending outwardly from portions of the outer longitudinally extending sidewall that are adjacent the upstream and downstream sides.
2. The surface cleaning apparatus of claim 1 wherein the recess extends essentially from the dirt collection chamber first end to the dirt collection chamber second opposed end.
3. The surface cleaning apparatus of claim 1 wherein the recess comprises an outwardly extending concave surface.
4. The surface cleaning apparatus of claim 1 wherein the dirt collection chamber comprises at least two angularly spaced apart recesses.
5. The surface cleaning apparatus of claim 1 wherein the upstream side extends sharply away from the outer longitudinally extending sidewall.
6. The surface cleaning apparatus of claim 1 wherein the upstream side meets the outer longitudinally extending sidewall at a sharp corner.
7. The surface cleaning apparatus of claim 1 wherein the upstream side extends away from the outer longitudinally extending sidewall at an angle.
8. The surface cleaning apparatus of claim 7 wherein the angle is greater than 30°.
9. The surface cleaning apparatus of claim 7 wherein the angle is greater than 45°.
10. The surface cleaning apparatus of claim 9 wherein the recess has a depth greater than 6 mm.
11. The surface cleaning apparatus of claim 9 wherein the recess has a depth greater than 10 mm.
12. The surface cleaning apparatus of claim 9 wherein the recess has a depth greater than 15 mm.
13. The surface cleaning apparatus of claim 7 wherein the angle is greater than 60°.
14. The surface cleaning apparatus of claim 13 wherein the recess has a depth greater than 10 mm.
15. The surface cleaning apparatus of claim 13 wherein the recess has a depth greater than 15 mm.
16. The surface cleaning apparatus of claim 7 wherein the angle is greater than 75°.
17. The surface cleaning apparatus of claim 1 wherein the recess has a depth greater than 6 mm.
18. The surface cleaning apparatus of claim 1 wherein the recess has a depth greater than 10 mm.
19. The surface cleaning apparatus of claim 1 wherein the recess has a depth greater than 15 mm.