Blowing suction device

Patent metadata

Field	Value
Publication number	US-2024008426-A1
Application number	US-202318372518-A
Country	US
Kind code	A1
Filing date	Sep 25, 2023
Priority date	Dec 12, 2017
Publication date	Jan 11, 2024
Grant date	—

Abstract

A single-tube blowing suction device, including a body, an airflow generation apparatus, a collection apparatus, and a blowing-suction tube. The airflow generation apparatus has an air inlet portion and an air outlet portion and is rotatably mounted on the body. The airflow generation apparatus rotates relative to the body to enable the single-tube blowing suction device to switch between a suction mode and a blowing mode. In the suction mode, the air inlet portion is in fluid communication with a first end of the blowing-suction tube, and the air outlet portion is in fluid communication with a connection port of the collection apparatus. In the blowing mode, the air outlet portion is in fluid communication with the first end of the blowing-suction tube. In the single-tube blowing suction device of the present invention, one tube is used for both blowing and suction.

First claim

1 - 20 . (canceled)

21 . A blowing suction device, having a blowing mode and a suction mode, comprising:
a body, comprising a grip portion to be held by an operator; an airflow generation apparatus, connected to the body, and comprising a motor, a fan driven by an output shaft of the motor and generating an airflow, and an inner housing surrounding the fan, the inner housing comprising an air inlet portion and an air outlet portion in communication with the outside; and a blowing-suction tube, having an opening in communication with the outside for air flowing into or flowing out, wherein the inner housing is pivotally disposed relative to the grip portion and is rotatable between at least a blowing position in the blowing mode and a suction position in the suction mode, when the inner housing rotates to the blowing position, an airflow flows into an inner cavity of the inner housing from the air inlet portion and then flows into the blowing-suction tube from the air outlet portion of the inner housing, and when the inner housing rotates to the suction position, an airflow enters the air inlet portion of the inner housing from the opening and flows out from the air outlet portion.

22 . The blowing suction device according to claim 21 , wherein the grip portion extends longitudinally along a first axis, the blowing-suction tube extends longitudinally along a second axis, and when the inner housing rotates between the blowing mode and the suction mode, an angle formed between the first axis and the second axis remains unchanged.

23 . The blowing suction device according to claim 21 , wherein the blowing-suction tube is a single-cavity air tube, and when the blowing suction device is in the blowing mode or the suction mode, an extending direction of the blowing-suction tube remains unchanged.

24 . The blowing suction device according to claim 21 , wherein the air inlet portion comprises an air inlet opening capable of being in communication with the outside in the blowing mode, and the air outlet portion comprises an air outlet opening allowing sucked foreign objects to flow outside; and
the fan is a centrifugal fan, the centrifugal fan comprises an air inlet side perpendicular to the output shaft of the motor and an air outlet side parallel to the output shaft of the motor, in the blowing mode, the air inlet opening is located right above the air inlet side, and the air outlet opening is located in front of the air outlet side, and in the suction mode, the air inlet opening is located in front of the air inlet side, and the air outlet opening is located right below the air outlet side.

25 . The blowing suction device according to claim 21 , wherein the airflow generation apparatus is an independent integral structure, and when the blowing suction device switches between the blowing mode and the suction mode, the independent integral structure is integrally rotatable relative to the grip portion.

26 . The blowing suction device according to claim 21 , wherein said blowing suction device further comprises a blowing-suction switching mechanism, the blowing-suction switching mechanism is capable of driving the inner housing to rotate relative to the grip portion to the blowing position in the blowing mode or to the suction position in the suction mode, when the inner housing rotates from the blowing position to the suction position, the blowing-suction switching mechanism is capable of driving the first end of the blowing-suction tube to face the air inlet portion, and when the inner housing switches from the suction mode to the blowing mode, the blowing-suction switching mechanism is capable of driving the first end of the blowing-suction tube to face the air outlet portion.

27 . The blowing suction device according to claim 26 , wherein s the blowing-suction switching mechanism is a linkage apparatus, the linkage apparatus is capable of driving a first end of the blowing-suction tube to be away from the air inlet portion or the air outlet portion of the inner housing by a preset distance and is capable of linking the inner housing to rotate relative to the grip portion to the blowing position in the blowing mode or to the suction position in the suction mode, when the inner housing rotates from the blowing position to the suction position, the linkage apparatus is capable of linking the first end of the blowing-suction tube to face the air inlet portion, and when the inner housing switches from the suction mode to the blowing mode, the linkage apparatus is capable of linking the first end of the blowing-suction tube to face the air outlet portion.

28 . The blowing suction device according to claim 27 , wherein the linkage apparatus drives the blowing-suction tube to make an axial movement relative to the inner housing to enable the first end of the blowing-suction tube to be away from the air inlet portion of the inner housing or the air outlet portion of the inner housing by the preset distance.

29 . The blowing suction device according to claim 27 , wherein the linkage apparatus comprises a connecting rod, a rotary disk pivotally mounted on the body, and a linkage member fixedly connected to the airflow generation apparatus, the rotary disk is further provided with a convex rod capable of being joined to the linkage member to drive the linkage member to rotate, one end of the connecting rod is pivotally connected to the first end of the blowing-suction tube, and the other end of the connecting rod is pivotally connected to the rotary disk; and
the connecting rod and the rotary disk form a crank connecting rod mechanism to convert the rotation of the rotary disk into the axial movement of the blowing-suction tube, and the rotary disk, the convex rod, and the linkage member form a Geneva mechanism, to convert continuous rotation of the rotary disk into intermittent rotation of the airflow generation apparatus relative to the grip portion through a joint between the connecting rod and the linkage member.

30 . The blowing suction device according to claim 29 , wherein the rotary disk comprises an anti-rotation plug at least partially protruding from the body, the linkage apparatus further comprises an operation component adaptively connected to the anti-rotation plug, and the operation component drives the rotary disk to rotate circumferentially.

31 . The blowing suction device according to claim 21 , wherein the body comprising a main unit housing connected to the grip portion, the main unit housing being provided with an opening in communication with the outside, the main unit housing at least partially covers the inner housing, the inner housing is pivotally disposed relative to the main unit housing and is at least rotatable between a blowing position in the blowing mode and a suction position in the suction mode.

32 . A blowing suction device, having a blowing mode and a suction mode, and comprising:
a body, comprising a grip portion to be held by an operator and a main unit housing connected to the grip portion, the main unit housing being provided with an opening in communication with the outside; an airflow generation apparatus, connected to the main unit housing, and comprising a motor, a fan driven by an output shaft of the motor and generating an airflow, and an inner housing surrounding the fan, the main unit housing at least partially covers the inner housing, the inner housing comprising an air inlet portion and an air outlet portion in communication with the outside; a blowing-suction tube, having a tube opening in communication with the outside for air flowing into or flowing out, the blowing-suction tube being provided at a first end near the airflo

Assignees

• Positec Power Tools Suzhou Co Ltd

Inventors

• Yu Xuefeng
• Jiao Shiping

Classifications

• E01H1/0863 Primary

  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

• A01G20/47 Primary

  Vacuum or blower devices · CPC title

• A47L5/14

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

• F04D23/003

  of radial-flow type · CPC title

• F04D25/105

  by changing rotor axis direction, e.g. oscillating fans (interconnecting rotary motion and oscillating motion F16H) · CPC title