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Axial fan blower and vacuum

a blower and vacuum technology, applied in the field of blowers and vacuums, can solve the problems of time-consuming and difficult operation of the process, and achieve the effect of improving the airflow efficiency of the tool and being easy to switch

Inactive Publication Date: 2016-11-10
BLACK & DECKER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is an axial or in-line type blowervac that can easily switch between its blowing and vacuum operational modes. It includes a main housing with an air pipe connected to a front portion, and an air inlet and an air exhaust at a rear portion of the housing. A fan assembly, which is powered by a motor, is positioned within the housing so that its axis is aligned with the longitudinal axis of the air pipe. A baffle is located within the housing and is moveable between a position where it covers the air inlet or the air exhaust. The motor can be located outside the housing, for example beneath it, and connected to the fan assembly through a transmission. An interlock mechanism is provided to prevent changing the operational mode between blowing and vacuuming while the tool is actuated. The technical effects of the invention include improved airflow efficiencies, compact design, and versatility in operational modes.

Problems solved by technology

This process can be time consuming and difficult to carry out.

Method used

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  • Axial fan blower and vacuum
  • Axial fan blower and vacuum
  • Axial fan blower and vacuum

Examples

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Embodiment Construction

[0026]With reference to FIG. 1 of the drawings, an outdoor power tool, preferably a blowervac, is constructed in accordance with the teachings of the present disclosure, and is generally indicated by reference numeral 10. The blowervac includes a main housing 12 having a handle 14 positioned on top and an airpipe 16 attached to a front portion of the main housing 12. The airpipe 16 is detachably connected to a sloped collar 18 of the housing 12.

[0027]At a rear portion of the main housing 12, is an air inlet 20 is covered by a grill 22. Adjacent the air inlet is an air exhaust 32. Inside the main housing 12, is a fan assembly with two sets of propellers, a rear propeller 26a and a front propeller 26b. A vane collar 28 (also shown in FIG. 4) is located forward of the front propeller 26b.

[0028]A baffle in the form of a flap 30 is hinged near the air inlet 20 and is movable between an upright position where it blocks the air inlet 20, and a down position (shown in dotted lines) where i...

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Abstract

The present invention is directed to an axial or in-line type blowervac that switches between a blowing operational mode and a vacuum operational mode by moving a baffle within its housing to cover an air inlet or air exhaust depending on the operational mode selected. In the blow mode, a fan assembly is driven in a first direction to blow air out of an airpipe attached to a front portion of the housing. In a vacuum mode, the fan assembly is driven in a reverse direction, and air and debris are pulled in through the airpipe.

Description

FIELD[0001]The present disclosure relates to blowers and vacuums for outdoor use, specifically axial-fan or in-line type blowervac designs.BACKGROUND[0002]Axial-fan or in-line type blowers are known in the prior art, and typically include a fan whose axis is aligned with the air outlet so that the airflow is not forced to undergo any significant turn or bend, increasing airflow efficiencies. Examples of such designs are shown in U.S. Pub. No. 2012 / 0076672 and U.S. Pub. No. 2013 / 0239361.[0003]Furthermore, devices that both blow and vacuum are known in the prior art. Typically, these devices include a main housing having the fan and at least two separate tubes, a first used when functioning as a blower, and a second tube used when functioning as a vacuum. Only one tube is attached to the housing at a time depending on whether the device is being used as a blower or vacuum, and the tubes must be swapped out when switching between the two. This process can be time consuming and difficul...

Claims

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Application Information

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IPC IPC(8): A47L5/14A47L9/14A47L9/28
CPCA47L5/14A47L9/14A47L9/2857A01G20/47
Inventor SERGYEYENKO, OLEKSIYTIRONE, JAMES C.DYER, KELLY E.FISHER, DRAKE L.FRENCH, JR., TIMOTHY W.MILLER, DAVID A.BAILEY, SEAN
Owner BLACK & DECKER INC