CN103422963A - Device for providing clean combustion air for the internal combustion engine of a working tool - Google Patents
Device for providing clean combustion air for the internal combustion engine of a working tool Download PDFInfo
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- CN103422963A CN103422963A CN2013101755983A CN201310175598A CN103422963A CN 103422963 A CN103422963 A CN 103422963A CN 2013101755983 A CN2013101755983 A CN 2013101755983A CN 201310175598 A CN201310175598 A CN 201310175598A CN 103422963 A CN103422963 A CN 103422963A
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- Prior art keywords
- air
- suction port
- fan
- combustion engine
- housing
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P1/00—Air cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P1/00—Air cooling
- F01P1/02—Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/02—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for hand-held tools
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/0201—Housings; Casings; Frame constructions; Lids; Manufacturing or assembling thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/022—Air cleaners acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/022—Air cleaners acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls
- F02M35/0223—Air cleaners acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls by centrifugal forces, e.g. cyclones
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Cyclones (AREA)
Abstract
In a device for providing clean combustion air for an internal combustion engine of a working tool, provision (1) is made for a cyclone filter (12) into which ambient air (13) contaminated with impurities can be sucked. A partial air flow (13) contaminated with impurities can be extracted by suction from the cyclone filter (12), a partial air flow (15) substantially freed from impurities is branched off from the cyclone filter (12) and supplied to the internal combustion engine (11) as combustion air (10). A fan (16) is at least partially accommodated in a housing (17, 17a). Provision is made in the housing for at least one suction bore (18), which leads into the housing (17, 17a) and provision is made in the area of the suction bore for a flow element (19, 20) for creating a low pressure. The partial air flow (14) contaminated with impurities is connected to the suction bore (18).
Description
Technical field
The present invention relates to a kind of internal-combustion engine that is used to working tool (working tool) provides the device of clean burning air, working tool is as chain saw especially, the angle grinding machine, the hand-held working tools such as working tool for garden and view maintenance, wherein, cyclone filter (cyclone filter) is set, can be sucked into this cyclone filter by the ambient air of contaminating impurity, by the part air stream of contaminating impurity, can under the effect of suction, from cyclone filter, be extracted, wherein, the part air stream that there is no impurity is from cyclone filter branch and can be fed into internal-combustion engine as combustion air, and fan is set, can cooling-air be blowed to internal-combustion engine by this fan, this fan is housed in housing at least in part.
Background technique
The device of clean burning air is provided providing for the internal-combustion engine of working tool from DE102004058136A1, and working tool for example is presented as the angle grinding machine.This device comprises cyclone filter, be sucked into this cyclone filter by the ambient air of contaminating impurity, wherein, part air stream by contaminating impurity extracts from cyclone filter under the effect of suction, extraction under suction is by the low pressure realization, and low pressure is to produce by rotatablely moving of fan.For this reason, fan comprises so-called rear blade (blading), by the part air stream of contaminating impurity, is introduced outlet (outlet port), in this outlet, by rear blade, attracts by the part air stream of contaminating impurity.Adversely, the rear blade of fan needs installing space, due to the limited fan installing space in housing, therefore the front vane of fan must realize that ground is less, only a small amount of cooling-air can be provided to internal-combustion engine thus, wherein, the front vane of fan is for providing cooling-air, cooling-air is for the cylinder of cooling internal combustion engines, particularly cooling internal combustion engines.
Another device of clean burning air is provided providing for the internal-combustion engine of working tool from DE202006002330U1, and working tool for example also is presented as the angle grinding machine.For cyclone filter, in order to produce by the part air stream of contaminating impurity, also by fan, provide low pressure, fan is basically for cooling internal combustion engines, especially for the cylinder of cooling internal combustion engines.Generating ，Gai hole, hole on the rotary middle spindle of fan fluidly is connected with the air stream of the part by contaminating impurity of cyclone filter.When fan rotates, for example due to fan, be connected to the bent axle of internal-combustion engine, generate low pressure in the hub of fan, this low pressure is finally for extracting by the part air stream of contaminating impurity from cyclone filter by suction.Adversely, this structure by via fan hub, limited the attraction effect.
Summary of the invention
Purpose, scheme and advantage
Therefore, the objective of the invention is the device that a kind of internal-combustion engine that is used to vehicularized working tool of further research and development provides the clean burning air, make described device is embodied as and can saves installing space and efficiency is high.Especially, the objective of the invention is not use any add ons that produces low pressure for the part air stream by contaminating impurity.
For device that the clean burning air is provided, following for the method that the clean burning air is provided and the working tool that comprises the device for the clean burning air is provided, utilize in each case scheme separately based on following, realize above-mentioned purpose.A kind of device of clean burning air, be provided with cyclone filter, can be inhaled into cyclone filter by the ambient air of contaminating impurity, by the part air stream of contaminating impurity, can under the effect of suction, from cyclone filter, be extracted, and then substantially pure part air stream, from cyclone filter branch, and can be fed into internal-combustion engine as combustion air, is provided with fan, cooling-air can blow to internal-combustion engine by fan, and fan is housed in housing at least in part.It is a kind of for the method for clean burning air is provided, cyclone filter is set, to be sucked cyclone filter by the ambient air of contaminating impurity, under the effect of suction, will from cyclone filter, be extracted by the part air stream of contaminating impurity, and then the pure part air stream of cardinal principle is from cyclone filter branch, and it is supplied to internal-combustion engine as combustion air, fan is set, by fan, cooling-air is blowed to internal-combustion engine, fan is housed in housing at least in part.The working tool said apparatus, working tool provides the method for clean burning air for the internal-combustion engine that is operating as working tool.
The present invention includes following technology instruction: at least one suction port is set in housing, suction port passes in (lead into) housing, be provided for generating the airflow member of low pressure in the zone of suction port, by the part air stream of contaminating impurity, be connected to suction port.
Basis of the present invention is in accommodating the housing of fan to generate low pressure in known manner and to form the thought of Wen's mouth (Venturi nozzle) by suction port and airflow member.For this reason, suction port is set in housing according to the present invention, suction port is introduced the zone of accommodating fan in housing.When the operation of internal combustion engine of working tool, fan typically sways enduringly, and axle for example forms by the bent axle of internal-combustion engine.Thus, provide enduringly low pressure in suction port, suction port can be connected to cyclone filter.Connect or pipe arrangement connects the suction port that plays the effect of Wen's mouth that can establish in housing and the connection between cyclone filter by flexible pipe, whereby, can generate by the part air stream of contaminating impurity.Thus, under the effect of suction, the part air stream of pollution can be extracted and can import in housing from cyclone filter, the air stream generated by fan in housing is only for cooling internal combustion engines, especially for the cylinder of cooling internal combustion engines.This can combustion motor function cause adverse effect, formed Wen's mouth is without any need for additional installing space.Because the height by utilizing Wen's mouth effect to produce attracts effect, can guarantee for example, the part air stream as combustion air from being supplied to internal-combustion engine (through for after another filter of meticulous dedusting) removing foreign matter effectively in suction port.
For example, housing can comprise air flow chamber, and the fan arrangement in air flow chamber becomes to pivot, and wherein, suction port passes in air flow chamber, and especially, fan generates air stream in the oral area district of suction port.Air flow chamber can comprise for example helicoid profile, and suction port for example can be embodied as and make its axle towards fan radially directed.In optional scheme, the suction port in the diapire of housing can be parallel to the mode of the axle of fan and extend.Fan can be embodied as cross flow fan (tangential fan), thereby proximal air flows like axially pasting blast fan, and the air initial acceleration that is supplied to internal-combustion engine is for around the rotatablely moving of axle, thereby generates air stream in the oral area district of suction port.Then, air stream can be similar to and tangentially leave fan area, and wherein, at least one suction port can preferably be introduced the strong especially zone of air stream in housing, thereby generates corresponding strong attraction effect in suction port.
Arrange Wen's mouth according to the present invention by the housing for accommodating fan and, for the part air stream by contaminating impurity provides low pressure, can realize only in a side, being equipped with the fan structure that produces the fan blade of air stream for the oral area district at suction port.By the one-sided blade of fan, owing to fan blade can being realized to such an extent that than fan, only comprise that the fan blade when generating the rear blade of low pressure is large, mode that therefore can be strong especially realizes the air stream for cooling internal combustion engines.
Optional favourable mode of execution according to airflow member, can in housing, (especially in housing section) form contraction profile portion (constriction contour), suction port passes into the contraction profile portion, and/or shrinks profile portion and be realized as in housing the relative mode with the oral area with suction port and locate.In two kinds of configurations, because the air stream in housing accelerates by the air-flow contraction flow region, so can generate low pressure in the oral area district of suction port, thereby produce, attract effect.
Be embodied as the profile that the airflow member of shrinking profile portion can for example comprise the upper blade side of propeller blade (airfoil wing), wherein, suction port from the downstream of the highest profile point of blade side pass in air flow chamber.Due to from the strongest low main flow that covers in downstream lighted of the highest profile of blade side, therefore, can utilize whereby strong especially attraction effect.The contraction profile portion of upper blade side form for example early can realize in the injection moulding of plastic casing, thereby housing self forms the contraction profile portion.In optional scheme, the additional parts that import already suction port can be arranged in to the inboard of housing, be used to form the contraction profile portion.
According to another optional mode of execution, airflow member can be embodied as the propeller blade profile portion, is arranged in housing its oral area near suction port, is arranged in air flow chamber especially.Thus, the propeller blade profile portion in air flow chamber, be configured to make air stream can be at least from blade side and upper blade side fully around the propeller blade profile portion, flow.Thus, the airflow member of propeller blade profile portion form not only can be embodied as the profile portion in housing, and the propeller blade profile portion also can freely be arranged in air flow chamber, become low pressure at upper blade adnation especially, thereby make, the propeller blade profile portion can make the blade side be arranged in air stream the mode of the direction of suction port.Need not go into the details, but be embodied as the first airflow member of the contraction profile portion in housing and be embodied as the second airflow member combination with one another of the propeller blade profile portion of freely arranging in air flow chamber.
The invention still further relates to a kind of internal-combustion engine that is used to working tool provides the method for clean burning air, working tool is as chain saw especially, the angle grinding machine, the hand-held working tools such as working tool for garden and view maintenance, wherein, cyclone filter is set, to be sucked cyclone filter by the ambient air of contaminating impurity, under the effect of suction, to from cyclone filter, be extracted by the part air stream of contaminating impurity, and then the pure part air stream of cardinal principle is from cyclone filter branch, and it is supplied to internal-combustion engine as combustion air, fan is set, by fan, cooling-air is blowed to internal-combustion engine.Fan is housed in housing at least in part, wherein, at least one suction port is introduced housing, ground associated with at least one airflow member, generate low pressure in the zone of suction port, extract by the part air stream of contaminating impurity by suction port under the effect of suction by low pressure.The feature and advantage of said apparatus also can consider to be applicable to the method according to this invention.
The invention still further relates to a kind of working tool comprised according to the device of the above-mentioned type, this working tool provides the method for clean burning air especially for the internal-combustion engine that is operating as apparatus for work according to the above description.
The accompanying drawing explanation
Below will illustrate in greater detail other measure of the present invention that improves by accompanying drawing with to the explanation of preferred exemplary embodiment of the present invention.
Fig. 1 illustrates the stereogram of the working tool that comprises the device for the clean burning air is provided,
Fig. 2 illustrates the plan view of the first exemplary embodiment of the device for the clean burning air is provided,
Fig. 3 illustrates the side view according to the exemplary embodiment for device that the clean burning air is provided of Fig. 2, and
Fig. 4 illustrates the plan view of another exemplary embodiment of the device for the clean burning air is provided.
Description of reference numerals
100 working tools
1 device
10 combustion airs
11 internal-combustion engines
12 cyclone filters
13 ambient airs
The 14 part air streams that pollute
15 clean part air streams
16 fans
17 housings
The 17a housing section
18 suction ports
19 airflow member, contraction profile portion
20 airflow member, propeller blade profile portion
21 air flow chamber
22 axles
23 air streams
24 fan blade
25 instruments
26 ventilate stitches
27 the highest profile point
28 filters
Embodiment
Fig. 1 illustrates the exemplary embodiment of working tool 100, and the internal-combustion engine 11 that it comprises for driving tool 25, be not clearly shown that internal-combustion engine in figure.Ambient air 13 is supplied to internal-combustion engine 11, and ambient air can and import in the housing 17 of working tool 100 through ventilation seam 26.Housing 17 is mainly used in accommodating fan 16 and for correspondingly air stream 23 being imported to internal-combustion engines 11, as subsequent figures in detail as shown in.
In plan view, Fig. 2 illustrates the part according to the working tool 100 of Fig. 1, and it comprises the device 1 that is used to internal-combustion engine 11 that the clean burning air is provided.Housing 17 is depicted as the omission housing lid, and in Fig. 1, housing lid is depicted as to be had seam 26, the Fig. 2 that ventilates another housing section 17a is shown.Fan 16 comprises a plurality of fan blade 24, and fan blade 24 is arranged in the front side of blast fan, and fan 16 is being housed in above-mentioned housing section 17a around the mode of axle 22 rotations.The end that axle 22 can for example pass through the bent axle of internal-combustion engine 11 forms.Housing section 17a comprises for accommodating the recess of accommodating of fan 16, accommodate recess increases in radially enlarged mode on the direction of the cylinder of internal-combustion engine 11, thereby form approximate logarithm helical (logarithmic spiral), by accommodating recess, form air flow chamber 21.Generate air-flow in this air flow chamber 21, air-flow is that the guide blades 24 by the fan 16 of rotation generates and substantially rotates around axle 22.
According to the present invention, the airflow member 19 of shrinking profile portion 19 forms is arranged in the bottom section of air flow chamber 21, and two suction ports 18 pass into and shrink profile portion 19.Air stream 23 accelerates above contraction profile portion 19, thereby generates low pressure according to Bernoulli in air stream 23, and result generates suction in suction port 18.Fig. 3 illustrates in greater detail the concrete diagram of the device 1 that is used to internal-combustion engine 11 that clean burning air 10 is provided, and particularly illustrates with the operability of cyclone filter 12 and is connected.
Fig. 3 illustrates the side view of housing 17, accommodates fan 16 in housing 17, not shown fan 16 in Fig. 3.The sectional view of the housing section 17a of housing 17 shows and shrinks profile portion 19, and suction port 18 extends through and shrinks profile portion 19 and be passed into air flow chamber 21 from the downstream of the flow direction of the highest profile point 27.The top that the diagram of air stream 23 will be shunk profile portion 19 is depicted as the accelerating region of air-flow, thereby produces low pressure in the oral area district of suction port 18.
Another part air stream 15 is leaving cyclone filter 12 under pure state substantially, part air stream 15 by cyclone filter 12 precleaning carries out meticulous dedusting by another filter 28, another filter 28 for example is embodied as paper filter or fabric filter, the combustion air 10 provided thus can be supplied to internal-combustion engine 11.
Fig. 4 illustrates and is used to another exemplary embodiment that the device 1 of clean burning air 10 is provided according to the internal-combustion engine 11 of the working tool 100 of Fig. 1.The housing section 17a of housing shown in figure 17, and housing 17 is the parts according to the working tool 100 of Fig. 1.Fan 16 is being housed in housing section 17a around the mode of axle 22 rotations, and fan 16 comprises that air flow chamber 21 is formed in housing section 17a for generate the fan blade 24 of air stream 23 in air flow chamber 21.Suction port 18 passes in air flow chamber 21 and passes into thus air stream 23, and suction port 18 is directed in the wall of housing section 17a.As in figure with as shown in the mode of signal, suction port 18 is also connected to the part air stream 14 of cyclone filter 12, ambient air 13 sucks by cyclone filter 12.Therefore, part air stream 14 is by contaminating impurity, and another part air stream 15 provided is by precleaning, and this another part air stream 15 can be fed into the internal-combustion engine 11 of working tool 100 as combustion air 10 through after filter 28.
Airflow member 20 is embodied as propeller blade profile portion 20, and inserts air flow chamber 21 in a distance of the upstream in the oral area district of suction port 18.At air stream 23, fully when propeller blade profile portion 20 flows, air stream 23 produces and accelerates at the upstream side of the direction in the face of suction port 18 of propeller blade profile portion 20, thus, again generates low pressure in the oral area district of suction port 18 conversely.Whereby, can under the effect of suction, in the top mode illustrated, via part air stream 14, from cyclone filter 12, extract the air polluted, wherein, impurity enters air stream 23, and air stream 23 is basically only for cooling internal combustion engines 11.
Embodiments of the present invention are not limited to above-mentioned exemplary embodiment, and above-mentioned exemplary embodiment only illustrates in the mode of example.As an alternative, even utilize the scheme shown in the situation of mode of execution, also can substantially belong to dissimilar various modifications.It may be important for the present invention that whole features that accessory rights claim, specification and accompanying drawing are drawn and/or advantage (comprising CONSTRUCTED SPECIFICATION or space configuration) reach separately various combinations.Especially, being embodied as by way of example the airflow member of shrinking profile portion 19 or propeller blade profile portion 20 can be embodied as and can produce in the oral area district of suction port 18 any other mode of low pressure.Especially, can also 11 the circuit portion from fan 16 to internal-combustion engine of air stream 23 be arranged, be embodied as the geometrical construction of other modes that can utilize venturi effect, thereby produced low pressure in a side at part air stream 14 places of cyclone filter 12.Therefore, the invention is not restricted to the corresponding air-flow geometrical construction in housing section 17a, for example, also can in bypass, be provided for utilizing the geometrical construction mode of execution of venturi effect.For example, cyclone filter 12 can only utilize a midfeather and air flow chamber 21 how much adjacency, thereby no longer need for part air stream 14 as connections such as hose line or pipe arrangement pipelines, and the connection between cyclone filter 12 and air flow chamber 21 can be restricted to suction port 18.In addition, also can be by airflow member 19 and 20 combinations, so that the mode that propeller blade profile portion 20 and contraction profile portion 19 are separated arranges propeller blade profile portion 20, wherein, airflow member 19 and 20 both is disposed in air stream 23.
Claims (11)
1. an internal-combustion engine (11) that is used to working tool (100) provides the device (1) of clean burning air (10), and described working tool is as chain saw, angle grinding machine, the hand-held working tools such as working tool safeguarded for garden and view especially, wherein,
-be provided with cyclone filter (12), can be inhaled into described cyclone filter by the ambient air of contaminating impurity (13),
-by the part air stream (14) of contaminating impurity, can under the effect of suction, from described cyclone filter (12), be extracted,
-and then substantially pure part air stream (15) from described cyclone filter (12) branch, and can be fed into described internal-combustion engine (11) as combustion air (10),
-being provided with fan (16), cooling-air can blow to described internal-combustion engine (11) by described fan,
-described fan (16) is housed in housing (17,17a) at least in part, it is characterized in that,
-being provided with at least one suction port (18) at described housing (17,17a), it passes in described housing (17,17a),
-be provided with the airflow member (19,20) for generating low pressure in the zone of described suction port (18),
-described the air stream of the part by contaminating impurity (14) is connected to described suction port (18).
2. device according to claim 1 (1), it is characterized in that, described housing (17,17a) comprises air flow chamber (21), described fan (16) is being configured in described air flow chamber (21) around the mode of axle (22) rotation, described suction port (18) passes in described air flow chamber (21), especially, described fan (16) produces air stream (23) in the oral area district of described suction port (18).
3. device according to claim 1 and 2 (1), is characterized in that, described air stream (23), for blowing to described internal-combustion engine (11), especially, blows to the cylinder of described internal-combustion engine (11).
4. according to the described device of any one in claim 1-3 (1), it is characterized in that, described fan (16) is equipped with fan blade (24) in a side, and described fan blade (24) produces described air stream (23) for the oral area district at described suction port (18).
5. according to the described device of any one in claim 1-4 (1), it is characterized in that, described airflow member (19) is embodied as in the housing section (17a) of described housing (17) shrinks profile portion (19), especially, described suction port (18) passes into described contraction profile portion (19), and/or described contraction profile portion (19) is realized as in described housing (17,17a) the relative mode with the oral area with described suction port (18) and locates.
6. device according to claim 5 (1), it is characterized in that, be embodied as the profile that the described airflow member (19) of shrinking profile portion (19) comprises the upper blade side of propeller blade, described suction port (18) preferably from described the downstream of the highest profile point (27) of blade side pass in described air flow chamber (21).
7. according to the described device of any one in claim 1-6 (1), it is characterized in that, described airflow member (20) is embodied as propeller blade profile portion (20), its near oral area of described suction port (18) be configured in described housing (17,17a), be configured in especially in described air flow chamber (21).
8. device according to claim 7 (1), it is characterized in that, described propeller blade profile portion (20) be configured to make described air stream (23) can be at least from blade side and upper blade side fully around described propeller blade profile portion, flow, especially, described propeller blade profile portion (20) so that upper blade side the mode of the direction of described suction port (18) is configured in described air stream (23).
9. an internal-combustion engine (11) that is used to working tool (100) provides the method for clean burning air (10), and described working tool is as chain saw, angle grinding machine, the hand-held working tools such as working tool safeguarded for garden and view especially, wherein,
-cyclone filter (12) is set, will be sucked described cyclone filter by the ambient air of contaminating impurity (13),
-under the effect of suction, will from described cyclone filter (12), be extracted by the part air stream (14) of contaminating impurity,
-and then substantially pure part air stream (15) from described cyclone filter (12) branch, and it is supplied to described internal-combustion engine (11) as combustion air (10),
-fan (16) is set, by fan, cooling-air is blowed to described internal-combustion engine (11),
-described fan (16) is housed in housing (17,17a) at least in part, it is characterized in that,
-at least one suction port (18) is introduced described housing (17,17a),
-ground associated with at least one airflow member (19,20) generates low pressure in the zone of described suction port (18),
-extract described part by contaminating impurity air stream (14) by described suction port (18) by low pressure under the effect of suction.
10. the internal-combustion engine (11) that is used to working tool (100) according to claim 9 provides the method for clean burning air (10), and described working tool (100) comprises according to the described device of any one in claim 2-8 (1).
A 11. working tool (100), it comprises according to the described device of any one in claim 1-8 (1), especially, described working tool provides the method for clean burning air (10) according to the described internal-combustion engine (11) that is used to working tool (100) of claim 9 or 10 for operation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202012101780U DE202012101780U1 (en) | 2012-05-15 | 2012-05-15 | Device for providing clean combustion air for the internal combustion engine of a working device |
| DE202012101780.6 | 2012-05-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103422963A true CN103422963A (en) | 2013-12-04 |
Family
ID=48672058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101755983A Pending CN103422963A (en) | 2012-05-15 | 2013-05-13 | Device for providing clean combustion air for the internal combustion engine of a working tool |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20130306007A1 (en) |
| CN (1) | CN103422963A (en) |
| DE (1) | DE202012101780U1 (en) |
| GB (1) | GB2503979A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370461A (en) * | 2022-08-16 | 2022-11-22 | 钱江集团温岭正峰动力有限公司 | Heat radiation structure of cleaning machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6498482B2 (en) * | 2015-03-12 | 2019-04-10 | 株式会社やまびこ | Power working machine |
| US11352989B2 (en) * | 2018-05-22 | 2022-06-07 | Briggs & Stratton, Llc | Engine with low mounted cyclonic air filter assembly |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4041911A (en) * | 1972-09-20 | 1977-08-16 | William Henry Steele | Carburettors and associated components |
| DE4109406C1 (en) * | 1991-03-22 | 1992-04-23 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
| DE4203355C1 (en) * | 1992-02-06 | 1993-01-28 | Fa. Andreas Stihl, 7050 Waiblingen, De | |
| DE4203885A1 (en) * | 1992-02-11 | 1993-08-12 | Stihl Maschf Andreas | HAND-HELD WORKING MACHINE LIKE MOTOR CHAINSAW, CUT-OFF GRINDERS OR THE LIKE |
| US5367988A (en) * | 1993-09-01 | 1994-11-29 | Wci-Outdoor Products, Inc. | Dynamic air cleaner and carburetor pressurization system for air cooled internal combustion engines |
| SE502559C2 (en) * | 1994-03-09 | 1995-11-13 | Electrolux Ab | Device in an internal combustion engine |
| US5542380A (en) * | 1995-03-28 | 1996-08-06 | Wci Outdoor Products, Inc. | Integrated dynamic air cleaner |
| JP3665220B2 (en) * | 1999-03-15 | 2005-06-29 | 株式会社共立 | Portable power work machine |
| DE10235761B4 (en) * | 2002-08-05 | 2022-04-14 | Andreas Stihl Ag & Co. | suction device |
| DE10301731B4 (en) * | 2003-01-18 | 2022-10-06 | Andreas Stihl Ag & Co. Kg | intake system |
| DE102004058136B4 (en) | 2004-12-02 | 2020-12-10 | Andreas Stihl Ag & Co. Kg | Working device |
| DE202006002330U1 (en) | 2006-02-13 | 2007-06-21 | Dolmar Gmbh | Extraction device for cyclone filtering of work tool, especially chain saws, has blower rotating about axle arranged co-axially around winding drum axis |
| US7878171B2 (en) * | 2008-06-17 | 2011-02-01 | Deere & Company | Engine cooling flow debris cleaner and air pre-cleaner aspirator |
-
2012
- 2012-05-15 DE DE202012101780U patent/DE202012101780U1/en not_active Expired - Lifetime
-
2013
- 2013-05-09 GB GB1308359.7A patent/GB2503979A/en not_active Withdrawn
- 2013-05-10 US US13/891,414 patent/US20130306007A1/en not_active Abandoned
- 2013-05-13 CN CN2013101755983A patent/CN103422963A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370461A (en) * | 2022-08-16 | 2022-11-22 | 钱江集团温岭正峰动力有限公司 | Heat radiation structure of cleaning machine |
| CN115370461B (en) * | 2022-08-16 | 2023-09-22 | 钱江集团温岭正峰动力有限公司 | Heat radiation structure of cleaning machine |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201308359D0 (en) | 2013-06-19 |
| DE202012101780U1 (en) | 2013-08-20 |
| GB2503979A (en) | 2014-01-15 |
| US20130306007A1 (en) | 2013-11-21 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131204 |