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Air filter unit

一种空气过滤器、过滤器的技术，应用在燃料空气滤清器、燃烧空气/燃烧-空气处理、化油器等方向

Active Publication Date: 2010-10-20
ANDREAS STIHL AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Where this leads to undesired fuel deposits, fuel wetting the filter or similar phenomena

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0027] figure 1An air filter unit 1 designed according to the invention and its interaction with a carburetor 2 of an internal combustion engine 39 is shown in a schematic block diagram. This device is part of a hand-held working machine, not shown in detail, which is driven by an internal combustion engine 39 . The working machine is in particular a chainsaw driven by an internal combustion engine 39 , a free-cutting machine, an extractor / blower or the like. The internal combustion engine 39 is a single-cylinder two-stroke or four-stroke engine and includes a cylinder 40 with a crankcase 41 . A carburetor 2 is provided for supplying the cylinders 40 with a fuel / air mixture. An intake duct 48 through the carburetor 2 opens into the cylinder 40 for supplying the fuel / air mixture. The air filter unit 1 is arranged on the input side of the carburetor 2 opposite the cylinder 40 and includes a filter element 3 , a filter base 4 and an intermediate base 7 . The filter base 4 is ...

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PUM

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Abstract

An air filter unit (1) for a carburetor (2) of a portable handheld work apparatus includes a filter element (3) and at least one clean air channel (10, 11) arranged between the filter element (3) and the carburetor (2). At least one condensation rib (29, 30, 31, 32) is arranged in the clean air channel (10, 11) running in flow direction.

Description

technical field [0001] The invention relates to an air filter unit for a evaporator of a hand-held working machine, comprising a filter element and at least one clean air channel arranged between the filter element and the evaporator, wherein at least one is arranged in the clean air channel Condensation ribs in flow direction. Background technique [0002] Hand-held working machines driven by an internal combustion engine have an evaporator for generating a fuel / air mixture, on the inflow side of which an air filter unit is arranged for filtering the drawn-in combustion air. The filter element includes a filter bottom plate arranged on the carburetor side, which is bolted to the intake surface of the carburetor. There is an air intake hole communicated with the air intake of the carburetor on the bottom plate of the filter. The filter base extends perpendicularly to the longitudinal axis of the inlet opening and, according to the prior art, has a sealing surface on its fa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M17/34F02M35/02
CPCY02T10/146F02M35/022Y02T10/126F02M33/02F02M35/10262F02B27/00F02M35/10281F02M35/1017F02M35/10196Y02T10/12
Inventor S·凯勒H·布纳C·马施克A·科尔梅尔A·韦沙尔K·诺斯
Owner ANDREAS STIHL AG & CO KG
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