Granted Patent B2

US 12,575,512 · App. 17/050,858 · Granted Mar 17, 2026

Inventors: Christian Bylund (Huskvarna, SE); Fredrik Wibling (Malmbäck, SE); Dan Gunnarsson (Norrahammar, SE); Marcus Pettersson (Jönköping, SE); Jonas Haglind (Jönköping, SE); Klas Adolfsson (Huskvarna, SE); Joakim Linder (Huskvarna, SE)

Assignee: HUSQVARNA AB

A01G20/47B08B5/02E01H1/0809F04B39/0044

Abstract

Claims (25)

1 . A debris blower comprising:

a housing,

a fan assembly arranged in the housing,

an outlet duct, and

at least one isolation element configured to reduce vibrations of the debris blower during operation,

wherein the fan assembly is suspended relative the housing completely via the at least one isolation element, and

wherein the at least one isolation element comprises a circumferential isolation element surrounding at least a portion of a circumference of the fan assembly.

2 . The debris blower according to claim 1 , wherein the fan assembly is suspended relative the outlet duct completely via the at least one isolation element.

3 . The debris blower according to claim 2 , wherein the outlet duct is rigidly attached to the housing.

4 . The debris blower according to claim 1 , wherein the fan assembly comprises a fan duct and a fan arranged in the fan duct, and wherein the at least one isolation element comprises at least one fan outlet isolation element extending between the fan duct and the outlet duct.

5 . The debris blower according to claim 4 , wherein an inner surface of the at least one fan outlet isolation element delimits a portion of an air flow path through the debris blower.

6 . The debris blower according to claim 5 , wherein the inner surface of the at least one fan outlet isolation element is flush with an inner surface of the fan duct at a transition area from the inner surface of the fan duct to the inner surface of the at least one fan outlet isolation element.

7 . The debris blower according to claim 6 , wherein the debris blower comprises an inlet duct, and wherein the fan assembly is suspended relative the inlet duct completely via the at least one isolation element.

8 . The debris blower according to claim 7 , wherein the inlet duct comprises an air inlet screen.

9 . The debris blower according to claim 8 , wherein the inlet duct is rigidly attached to the housing.

10 . The debris blower according to claim 4 , wherein at least a portion of the at least one fan outlet isolation element, the at least one of the fan inlet isolation element, or the circumferential isolation element is press fit between the housing and the fan assembly.

11 . The debris blower according to claim 4 , wherein the debris blower comprises one or more continuous pieces of isolation material each comprising at least a section of the circumferential isolation element, at least a section of the fan outlet isolation element, and at least a section of the fan inlet isolation element.

12 . The debris blower according to claim 4 , wherein the debris blower comprises one or more continuous pieces of isolation material each comprising at least a section of the fan outlet isolation element and at least a section of the outlet duct cladding.

13 . The debris blower according to claim 4 , wherein the debris blower comprises one or more continuous pieces of isolation material each comprising at least a section of the fan outlet isolation element, at least a section of fan inlet isolation element, at least a section of the circumferential isolation element, and at least a section of the outlet duct cladding.

14 . The debris blower according to claim 13 , wherein the one or more continuous pieces of isolation material together form a tubular structure, wherein an inner surface of the tubular structure comprises a first recess, and wherein the fan assembly is form-fittingly held in the first recess.

15 . The debris blower according to claim 14 , wherein an inner surface of the tubular structure comprises a second recess, and wherein at least a portion of the inlet duct is form-fittingly held in the second recess.

16 . The debris blower according to claim 15 , wherein the tubular structure comprises a third recess, and wherein at least a portion of the outlet duct is form-fittingly held in the third recess.

17 . The debris blower according to claim 1 , wherein the at least one isolation element comprises an outlet duct cladding covering inner surfaces of the outlet duct.

18 . The debris blower according to any one of the preceding claim 1 , wherein the at least one isolation element comprises foam rubber having a thickness within a range of 7 mm to 50 mm.

19 . The debris blower according to claim 1 , wherein the fan assembly comprises an axial fan and an electric motor configured to rotate the fan.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (18)