Trash bag assembly for smart trash receptacle, trash bag fitting device and smart trash receptacle

1. A trash bag assembly for a trash receptacle, comprising:

a trash bag ( 4 ) that is a tubular structure having

a continuous internal lumen extending throughout an entire length thereof, and

two ends, one of which is open and the other of which is closed;

a storage body ( 1 ) defining both a first opening allowing the passage of trash and an annular trough ( 3 ) extending externally around the first opening and configured to receive the trash bag ( 4 ), the annular trough ( 3 ) having an open end; and

a lid ( 2 ) defining a second opening corresponding to the first opening, the lid ( 2 ) being configured to cover the open end of the annular trough ( 3 ) so as to form, together with one side wall of the annular trough ( 3 ), a gap serving as a bag exit, wherein

the annular trough ( 3 ) has an inner side wall proximate the first opening and an outer side wall away from the first opening, and

the lid ( 2 ) has an inner edge and an outer edge, the outer edge being pivotably connected at one end thereof to the outer side wall of the annular trough ( 3 ).

2. The trash bag assembly of claim 1 , wherein the lid ( 2 ) is integral with, or detachably connected to, the storage body ( 1 ).

3. The trash bag assembly of claim 1 , wherein the trash bag ( 4 ) is configured to be reciprocally folded into an annulus so as to be disposed within the annular trough ( 3 ).

4. The trash bag assembly of claim 1 , wherein the side wall of the annular trough ( 3 ) that defines the bag exit has a flared edge ( 5 ) that is curved outwardly away from the annular trough ( 3 ).

5. The trash bag assembly of claim 1 , wherein

the open end of the annular trough ( 3 ) is open in the same direction in which the first opening extends, and

the inner edge of the lid ( 2 ) forms the gap, together with the inner side wall, and the outer edge of the lid ( 2 ) connected to the outer side wall.

6. The trash bag assembly of claim 5 , wherein the lid ( 2 ) defines a lip at the outer edge, which forms an interference fit with the outer side wall of the annular trough ( 3 ) or is fastened thereto by snap-on means.

7. The trash bag assembly of claim 6 , wherein the snap-on means comprise a recess and a block in cooperation with the recess, one of which is provided on an internal side of the lip ( 6 ) and the other on the outer side wall of the annular trough ( 3 ).

8. A trash receptacle, comprising the trash bag assembly of claim 1 .

9. A trash bag fitting device for a smart trash receptacle, the trash bag fitting device configured to fit a trash bag into a main body of the smart trash receptacle, the smart trash receptacle being provided therein with the trash bag assembly of claim 1 , the trash bag being accommodated within the trash bag assembly, the trash bag fitting device comprising a vacuum assembly and a motor ( 8 ) for driving the vacuum assembly, the vacuum assembly comprising an air inlet ( 91 ) and an air outlet, the air inlet ( 91 ) in communication with an air vent in an inner wall of the main body of the trash receptacle, the air outlet in communication with the outside of the main body of the trash receptacle.

10. The trash bag fitting device of claim 9 , wherein the vacuum assembly is a centrifugal impeller type vacuum assembly or an axial-flow fan type vacuum assembly.

11. The trash bag fitting device of claim 10 , wherein the centrifugal impeller type vacuum assembly comprises a casing and a centrifugal impeller ( 7 ) housed in the casing, wherein the air inlet is defined in the casing so as to axially oppose the centrifugal impeller ( 7 ) and the air outlet in the casing so as to be radially oppose the centrifugal impeller ( 7 ) or tangential thereto, and wherein the air inlet ( 91 ) communicates with the air vent in the inner wall of the main body, with the air outlet in communication with the outside of the main body of the trash receptacle.

12. The trash bag fitting device of claim 11 , wherein the centrifugal impeller ( 7 ) comprises blades ( 71 ) each provided with, at a portion thereof in positional correspondence with the air inlet ( 91 ), a shoulder ( 711 ) projecting toward the air inlet ( 91 ), the shoulder ( 711 ) being sheet-like and integral with the blade ( 71 ) on which it is provided, the blades ( 71 ) being each curved in shape.

13. The trash bag fitting device of claim 11 , wherein the centrifugal impeller ( 7 ) further comprises a wheel ( 72 ) to which all the blades ( 71 ) are fixed and oriented perpendicular.

14. The trash bag fitting device of claim 11 , wherein the casing comprises a top piece ( 9 ) and a bottom piece ( 30 ) detachably coupled to the top piece ( 9 ), and wherein the air inlet ( 91 ) is defined in the top piece ( 9 ), with gaps between the top piece ( 9 ) and the bottom piece ( 30 ) defining the air outlet.

15. The trash bag fitting device of claim 14 , wherein the top piece ( 9 ) is provided with at least two posts ( 92 ) that project from a bottom side thereof and are snugly insertable into respective at least two recesses ( 301 ) defined in the bottom piece ( 30 ).

16. The trash bag fitting device of claim 14 , wherein the centrifugal impeller ( 7 ) is provided with a shaft hole in which a main shaft of the motor ( 8 ) is received and secured, and wherein the bottom piece ( 30 ) is provided with a hole ( 302 ) through which the main shaft of the motor ( 8 ) is inserted.

17. The trash bag fitting device of claim 13 , wherein each of the blades ( 71 ) has an end portion away from a center of the wheel ( 72 ) that is thinner than the remaining portion.

18. A trash receptacle, comprising the trash bag fitting device of claim 9 .