Blower/vacuum apparatus

Patent metadata

Field	Value
Publication number	US-10722085-B2
Application number	US-201515531226-A
Country	US
Kind code	B2
Filing date	Nov 25, 2015
Priority date	Nov 28, 2014
Publication date	Jul 28, 2020
Grant date	Jul 28, 2020

Abstract

The present invention relates to a blowing-suction device, selectively operating in a blowing mode or a suction mode, comprising: a main body; a motor located inside the main body, the motor having a motor shaft providing rotational motion; a fan assembly driven by the motor to rotate; and a blowing assembly and a suction assembly connected to the main body; wherein the fan assembly includes an axial fan that, while in the blowing mode, the blowing assembly is connected to the main body, and wherein the axial fan rotates around a first rotary shaft, and, while in the suction mode, the suction assembly is connected to the main body.

First claim

What is claimed is:

1. A blowing-suction device, selectively operating in a blowing mode or a suction mode, comprising: a main body; a motor located inside the main body, having a motor shaft providing rotational motion; a fan assembly located in the main body driven by the motor to rotate; and a blowing assembly and a suction assembly connected to the main body; wherein: the blowing assembly and the suction assembly are disposed separately, and are respectively connected to the main body as two separate components, the fan assembly comprises an axial fan, in the blowing mode the blowing assembly is connected to the main body, the suction assembly is separated from the main body, and the axial fan rotates around a first rotary shaft, and in the suction mode the suction assembly is connected to the main body and the blowing assembly is separated from the main body; wherein the fan assembly further comprises a centrifugal fan, and wherein in the suction mode the centrifugal fan rotates around a second rotary shaft.

2. The blowing-suction device according to claim 1 , wherein the fan assembly further comprises a centrifugal fan, and wherein in the suction mode the centrifugal fan rotates around a second rotary shaft.

3. The blowing-suction device according to claim 1 , wherein the axial fan and the centrifugal fan are both disposed in the main body.

4. The blowing-suction device according to claim 3 , wherein the axial fan and the centrifugal fan are located on two sides of the motor respectively along an extending direction of the motor shaft.

5. The blowing-suction device according to claim 1 , wherein the blowing-suction device further comprises a clutch device disposed between the motor and the fan assembly, the clutch device comprises a clutch and an operating mechanism for operating the clutch, and the operating mechanism operably drives the clutch to make one of the axial fan and the centrifugal fan connect the motor, and at the same time, make the other one of the axial fan and the centrifugal fan disconnected from the motor.

6. The blowing-suction device according to claim 1 , wherein the blowing-suction device further comprises a clutch device located between the motor and the fan assembly, and when the motor is operated for forward or reverse rotation, the clutch device makes one of the axial fan and the centrifugal fan connect the motor, and at the same time, make the other one of the axial fan and the centrifugal fan disconnected from the motor.

7. A blowing-suction device, comprising: a main body; a motor located in the main body, the motor having a motor shaft providing rotational motion; a fan assembly located in the main body driven by the motor to make rotational motion; and a blowing-suction assembly detachably connecting to the main body; wherein: the fan assembly comprises an axial fan and a centrifugal fan, the axial fan rotates around a first rotary shaft to generate airflow suctioned from the main body and blown out from the blowing-suction assembly, the centrifugal fan rotates around a second rotary shaft to generate airflow suctioned from the blowing-suction assembly and blown out from the main body, and the motor shaft is configured to selectively connect one at a time to the first rotary shaft and the second rotary shaft.

8. The blowing-suction device according to claim 7 , wherein the blowing-suction assembly comprises a blowing pipe and a suction pipe fixedly connected.

9. The blowing-suction device according to claim 8 , wherein the axial fan and the centrifugal fan are both disposed in the main body.

10. A blowing-suction device, selectively operating in a blowing mode or a suction mode, the blowing-suction device comprising: a main body; a motor located in the main body, the motor having a motor shaft providing rotational motion; a fan assembly located in the main body driven by the motor to make rotational motion; and an air pipe connecting the main body, wherein: the fan assembly comprises an axial fan and a centrifugal fan, in the blowing mode the motor does not drive the centrifugal fan and the axial fan rotates to generate airflow suctioned from the main body and blown out from the air pipe, and in the suction mode the motor does not drive the axial fan motor and the centrifugal fan rotates to generate airflow suctioned from the air pipe and blown out from the main body.

11. The blowing-suction device according to claim 10 , wherein the air pipe is detachably connected to different positions of the main body.

12. The blowing-suction device according to claim 10 , wherein the air pipe is configured to be switched between a blowing position of the blowing-suction device in the blowing mode and a sucking position of the blowing-suction device in the suction mode.

13. The blowing-suction device according to claim 10 , wherein:
the main body is provided with a first opening and a second opening,
in a blowing mode, the air pipe is mounted to the first opening,
when the blowing-suction device switches to the suction mode the air pipe is removed from the first opening and mounted to the second opening.

14. The blowing-suction device according to claim 10 , wherein:
the blowing-suction device further comprises a clutch device,
the clutch device comprises a clutch and an operating mechanism for operating the clutch, and
the operating mechanism operably drives the clutch to cause one of the axial fan and the centrifugal fan to connect to the motor and cause the other one of the axial fan and the centrifugal fan to disconnect from the motor.

15. The blowing-suction device according to claim 10 , further comprising a clutch device located between the motor and the fan assembly, wherein when the motor is operated for forward or reverse rotation the clutch device is configured to connect one of the axial fan and the centrifugal fan to the motor and to disconnect the other one of the axial fan and the centrifugal fan from the motor.

Assignees

• Positec Power Tools Suzhou Co Ltd

Inventors

• Gao Zhendong
• Cestonaro Andrea
• Zha Xiahong
• Zhao Fengli
• Huo Lixiang

Classifications

• F04D29/281

  for fans or blowers · CPC title

• A01G20/47 Primary

  Vacuum or blower devices · CPC title

• A47L5/14 Primary

  cleaning by blowing-off, also combined with suction cleaning · CPC title

• A01G20/40 Primary

  Apparatus for cleaning the lawn or grass surface · CPC title

• E01H1/0863

  Apparatus loosening or removing the dirt by blowing and subsequently dislodging it at least partially by suction (liquids or semi-liquids E01H1/108); Combined suction and blowing nozzles · CPC title