Extraction hood

1. An adapter for a suction device having an electric motor that drives an impeller and a volute that houses said electric motor and said impeller, the adapter comprising:

a substantially rectangular first shaped side having a first side exterior surface configured to engage with said electric motor of the suction device that drives said impeller;

a substantially circular second shaped side having a second side exterior surface configured to mate with said volute of the suction device that houses said electrical motor and said impeller, wherein the substantially rectangular first shaped side and the substantially circular second shaped side are opposite sides of the adapter; and

a plurality of through holes for fastening said electric motor to said volute.

2. The adapter according to claim 1 , further comprising at least two guiding elements protruding from said substantially circular second shaped side, said at least two guiding elements being configured to be inserted into respective holes of said volute.

3. The adapter according to claim 1 , further comprising at least two hooking elements protruding from said substantially circular second shaped side, said at least two hooking elements being configured to hook with respective holes of said volute, thereby connecting said adapter to said volute during assembly of said suction device.

4. The adapter according to claim 1 , wherein said plurality of through holes include two slots, both of which have a substantially elliptical section and are so configured as to allow the passage of two respective screws of said electric motor.

5. The adapter according to claim 1 , wherein said substantially rectangular first shaped side is configured to engage with said electric motor, which has a substantially parallelepiped shape, and wherein said substantially circular second shaped side has a shape substantially similar to the shape of a different second electric motor, which has a substantially cylindrical shape.

6. A suction device comprising:

an electric motor;

an impeller driven by said electric motor;

a volute adapted to house said electric motor and said impeller; and

an adapter including:

a substantially rectangular first shaped side configured to engage with said electric motor that only engages with one side of the adapter,

a substantially circular second shaped side configured to mate with said volute, wherein the substantially rectangular first shaped side and the substantially circular second shaped side are opposite sides of the adapter, and

a plurality of through holes for fastening said electric motor to said volute.

7. The suction device according to claim 6 , wherein said electric motor has a substantially parallelepiped shape suitable for fitting into said substantially rectangular first shaped side of said adapter, and includes two protruding screws configured to go through said adapter and be fastened to said volute.

8. The suction device according to claim 6 , wherein said volute includes six holes arranged circumferentially on the surface of said volute which is proximal to said substantially circular second shaped side of said adapter.

9. The suction device according to claim 8 , wherein two of said six holes are configured to house screws for fastening said electric motor.

10. The suction device according to claim 9 , wherein each one of the remaining four of said six holes is configured to alternately house: a guiding element or a hooking element of said adapter, or a screw for a different second electric motor, which is insertable into said suction device without using said adapter, said second electric motor having a substantially cylindrical shape.

11. The suction device according to claim 6 , further comprising cover elements configured to cover and electrically insulate screws protruding from said volute.

12. A range hood, comprising

a suction device having an electric motor, an impeller driven by said electric motor, and a volute adapted to house said electric motor and said impeller; and

an adapter having a substantially rectangular first shaped side configured to engage with said electric motor, a substantially circular second shaped side configured to mate with said volute, and a plurality of through holes for fastening said electric motor to said volute, wherein the substantially rectangular first shaped side and the substantially circular second shaped side are opposite sides,

wherein the adapter includes at least two hooking elements protruding from said second shaped side, said at least two hooking elements being configured to hook with respective holes of said volute, thereby connecting said adapter to said volute during assembly of said suction device.

13. The adapter according to claim 2 , wherein said plurality of through holes include two slots, both of which have a substantially elliptical section and are so configured as to allow the passage of two respective screws of said electric motor.

14. The adapter according to claim 3 , wherein said plurality of through holes include two slots, both of which have a substantially elliptical section and are so configured as to allow the passage of two respective screws of said electric motor.

15. The adapter according to claim 2 , wherein said substantially rectangular first shaped side is configured to engage with said electric motor, which has a substantially parallelepiped shape, and wherein said substantially circular second shaped side has a shape substantially similar to the shape of a different second electric motor, which has a substantially cylindrical shape.

16. The adapter according to claim 3 , wherein said substantially rectangular first shaped side is configured to engage with said electric motor, which has a substantially parallelepiped shape, and wherein said substantially circular second shaped side has a shape substantially similar to the shape of a different second electric motor, which has a substantially cylindrical shape.

17. The adapter according to claim 4 , wherein said substantially rectangular first shaped side is configured to engage with said electric motor, which has a substantially parallelepiped shape, and wherein said substantially circular second shaped side has a shape substantially similar to the shape of a different second electric motor, which has a substantially cylindrical shape.

18. The suction device according to claim 7 , wherein said volute includes six holes arranged circumferentially on the surface of said volute which is proximal to said substantially circular second shaped side of said adapter.

19. The suction device according to claim 7 , further comprising cover elements configured to cover and electrically insulate screws protruding from said volute.