CN103573487A - Air filter for engine of operation machine - Google Patents
Air filter for engine of operation machine Download PDFInfo
- Publication number
- CN103573487A CN103573487A CN201310347030.5A CN201310347030A CN103573487A CN 103573487 A CN103573487 A CN 103573487A CN 201310347030 A CN201310347030 A CN 201310347030A CN 103573487 A CN103573487 A CN 103573487A
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- air
- filter element
- filter
- strainer
- purifying chamber
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- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention provides an air filter for an engine of an operation machine. Even if the engine is operated in a dusty environment, the air filter is still hard to be blocked, and thereby a long service lifetime can be ensured. The air filter is formed by having a filtering component (25) in a manner that the inner part of an air filter housing (22) is divided into an unpurified chamber (23) connected to an air inlet (20) and a purified chamber (24) connected to an air outlet (21). One side of the air filter housing (22) is provided with the air inlet (20) opening towards the air, and the other side is provided with the air outlet (21) communicated with a carburetor (10) of an engine (E). The filtering component (25) is composed of a paper first filter core (35) facing the unpurified chamber (23) and a non-woven fabric second filter core (36).
Description
Technical field
The present invention relates to the improvement of the air-strainer of working machine engine, the air-strainer of described working machine engine forms to become the mode of the not purifying chamber being connected with described air inlet and the purifying chamber being connected with described air outlet slit to set filter component its interior separation in filter case, described filter case has to the air inlet of atmosphere opening in a side, has the air outlet slit being communicated with the Carburetor of motor at opposite side.
Background technique
As disclosed in Patent Document 1, known: in the air-strainer of described motor, as filter component, to use the fabric member of nonwoven.In addition, as disclosed in patent documentation 2, known: in working machine engine, the breathing pipe being communicated with crank chamber or valve Transmission Room to be connected with purifying chamber or the Carburetor of air-strainer, make the blow-by gas of discharging from breathing pipe suck motor, the processing of burning.
Patent documentation 1: No. 3621007 communique of Japanese Patent
Patent documentation 2: TOHKEMY 2002-21636 communique
In addition, for working machine engine, according to its running posture, the such situation of the spittle that existence contains lubricant oil the blow-by gas of discharging from breathing pipe, if the spittle of described lubricant oil is attached to the filter element of air-strainer, the strainability of this filter element reduces, in this case, if use the fabric filter element of nonwoven, the reduction of its strainability is fewer than filter element made of paper.
, known: if dust is attached to the position that the spittle of the lubricated oil of the fabric filter element of nonwoven drenches, can occurs to stop up and cause its strainability significantly to decline.Therefore,, in the air-strainer of the working machine engine turning round under the dusty environment of being everlasting, the Durability of the filter element that nonwoven is fabric is shorter.
Summary of the invention
The present invention In view of the foregoing completes, its object is to provide the air-strainer of described working machine engine, even if motor turns round in dusty environment, this air-strainer is also difficult to stop up, thereby can guarantee the Durability grown.
To achieve these goals, the invention provides a kind of air-strainer of working machine engine, the air-strainer of described working machine engine forms to become the mode of the not purifying chamber being connected with air inlet and the purifying chamber being connected with air outlet slit to set filter component its interior separation in filter case, described filter case has the described air inlet to atmosphere opening in a side, and at opposite side, there is the described air outlet slit being communicated with the Carburetor of motor, the 1st of the air-strainer of described working machine engine is characterised in that, to form described filter component in the face of the 1st filter element made of paper of described not purifying chamber with in the face of the 2nd fabric filter element of nonwoven of described purifying chamber.
In addition, the of the present invention the 2nd is characterised in that, on the basis of the 1st feature, in described purifying chamber, is equipped with buffer unit, and this buffer unit covers the opening portion of described air outlet slit to reserve the mode of airspace.
In addition, the of the present invention the 3rd is characterised in that, on the basis of the 1st feature, the peripheral part of the peripheral part of described the 2nd filter element and the netted dividing plate between the 2nd filter element and described the 1st filter element is supported on bearing support, the inner circle wall close contact of this bearing support and described filter case is provided with gap between this netted dividing plate and described the 1st filter element.
According to the 1st feature of the present invention, when motor turns round under dusty environment, the 1st filter element made of paper filters a large amount of dusts as main body, and therefore, the 2nd fabric filter element of nonwoven is born very little to the filtration of dust.On the other hand, even make to flow backwards from air outlet slit to purifying chamber's side together with blow back body at the oily spittle existing of the intake duct of Carburetor midway owing to blowing phenomenon in motor, but because this oily spittle is attached to the 2nd filter element, be captured, so it is prevented to the 1st dividing a word with a hyphen at the end of a line of filter element side.Therefore, can prevent because causing the 1st filter element to stop up adhering to of oil.In addition, because the 2nd filter element is the fabric parts of nonwoven, so the decline of its filtering function is less, and dust, to be attached to the situation of adhering on the oil of the 2nd filter element less, therefore can also prevent that the 2nd filter element from stopping up.Like this, can effectively prevent that the 1st and the 2nd filter element both sides from stopping up, thereby can significantly improve the Durability of filter component, meanwhile, can improve the durability of motor.
According to the 2nd feature of the present invention, in the situation that motor occurs to blow phenomenon, the oily spittle in the blow-by gas midway existing of the intake duct of Carburetor flows backwards from air outlet slit to purifying chamber's side together with blow back body, but wherein the buffer unit of the opening portion of the capped air outlet slit of the diffusion of the spittle of most of oil suppresses, reduce as far as possible the oily spittle with respect to the adhering to of the 2nd filter element, thereby can further improve the Durability of filter component.
According to the 3rd feature of the present invention, by guarantee gap between the 1st filter element and netted dividing plate, can avoid causing filter area to reduce because the 1st filter element contacts with netted dividing plate, thereby can give full play to the filtering function of the 1st filter element to dust.
Accompanying drawing explanation
Fig. 1 illustrates the stereogram of a running form of motor for the operation of embodiments of the present invention.
Fig. 2 is the vertical profile side view of the first half of above-mentioned motor.
Fig. 3 is the amplification vertical profile side view of the air-strainer in Fig. 2.
Fig. 4 is the sectional view along the 4-4 line of Fig. 3.
Fig. 5 is the figure observing along the arrow 5 of Fig. 3.
Label declaration
A: air-strainer;
E: motor;
10: Carburetor;
20: air inlet;
21: air outlet slit;
23: purifying chamber not;
24: purifying chamber;
25: filter component;
35: the 1 filter elements;
36: the 2 filter elements;
37: netted dividing plate;
39: bearing support;
41: gap;
49: buffer unit;
50: airspace.
Embodiment
Below, based on accompanying drawing, embodiments of the present invention are described.
In Fig. 1, label E is the hand four stroke engine as working machine engine, and it is for example installed on the drive portion of this power finisher T as the power source of power finisher T.About power finisher T, owing to using cutter C according to its job state towards all directions, therefore, each motor E also significantly tilts or puts upside down, and its running posture changes all the time.
As shown in Figure 2, the engine main body 1 of above-mentioned motor E is configured to cylinder block 3 and cylinder head 5 is combined into one, described cylinder block 3 is embedded with piston 2, the firing chamber 4 that the end face that described cylinder head 5 has piston 2 is faced, is provided with in cylinder head 5: the suction port 6 of 4 openings and relief opening (not shown) in firing chamber respectively; With the intake valve 7 and the exhaust valve (not shown) that make these suction ports 6 and exhaust orifice open/close.The upstream extremity of suction port 6 is at a lateral opening of cylinder head 5, at the upstream extremity of this suction port 6, via suction tude 11, is connected with Carburetor 10, at the entrance of the intake duct 10a of this Carburetor 10, air-strainer A is installed.Downstream at relief opening is connected with silencing apparatus M.
In cylinder head 5, be provided with valve Transmission Room 14, this valve Transmission Room 14 is for taking in the valve actuating gear 13 that drives above-mentioned intake valve 7 and exhaust valve to open and close, the blow-by gas producing in not shown crank chamber rises to valve Transmission Room 14, for by this blow-by gas, the breathing pipe 15 to air-strainer A guiding is connected with cylinder head 5.
As shown in Figure 3 and Figure 4, air-strainer A possesses: filter case 22, and it has air inlet 20 in a side, and has air outlet slit 21 at opposite side; With filter component 25, it is equipped in filter case 22, and the interior separation of this filter case 22 is become to the not purifying chamber 23 being connected with air inlet 20 and the purifying chamber 24 being connected with air outlet slit 21.
Filter case 22 is by plastic the 1st housing halfbody 22a and be similarly plastic the 2nd housing halfbody 22b and form, described the 1st housing halfbody 22a has air inlet 20He Wei purifying chamber 23, described the 2nd housing halfbody 22b has 24, two of air outlet slit 21He purifying chambers housing halfbody 22a, 22b makes open end opposite one another and combination as below.
; that at the lower surface from the 1st housing halfbody 22a, gives prominence to is provided with connect apertures 27 to lower protruding edge 26; the outstanding lower surface that is arranged at the 2nd housing halfbody 22b of armite 28 of crank-like; described armite 28 is sticked in this connect apertures 27, thereby the bottom of two housing halfbody 22a, 22b is connected to each other.In addition, upper surface at the 1st and the 2nd housing halfbody 22a, 22b is formed with respectively convex edge 29,30, the 2nd convex edge 30 at the 2nd housing halfbody 22b is embedded with nut 31, and the bolt 32 screwing togather with this nut 31 is located at the 1st convex edge 29 of the 1st housing halfbody 22a.Therefore, armite 28 is being sticked in after connect apertures 27, bolt 32 is screwed togather and is anchored on nut 31, making thus two housing halfbody 22a, 22b combine.
Filter component 25 consists of the 1st filter element 35 made of paper and the 2nd fabric filter element 36 of nonwoven, described the 1st filter element 35 is faced not purifying chamber 23, described the 2nd filter element 36 is in the face of purifying chamber 24, and adjacent with the 1st filter element 35 across netted dividing plate 37, about the 1st filter element 35, in order to obtain as wide as possible its filter area, except peripheral part, remaining part is corrugated and is bent to form, and in addition, netted dividing plate 37 has a large amount of through hole 38,38 ...
About netted dividing plate 37 and the 1st filter element 35, their peripheral part is embedded in to the bearing support 39 being formed by rubber elastomeric material, thus they are supported on to bearing support 39.Now, and the partition 40 of bearing support 39 one is between netted dividing plate 37 and the peripheral part of the 1st filter element 35, thereby is provided with gap 41 between netted dividing plate 37 and the 1st filter element 35.And bearing support 39 is airtight shape and is flush-mounted in the 1st installation recess 43, the described the 1st installs the opening peripheral portion that recess 43 is formed at the 1st housing halfbody 22a.
On the other hand, the peripheral part of the 2nd filter element 36 is flush-mounted in the 2nd recess 44 is installed, and the described the 2nd installs the opening peripheral portion that recess 44 is formed at the 2nd housing halfbody 22b.And the 2nd filter element 36 is by the outstanding many rod-like protrusions 45,45 of the inwall from the 2nd housing halfbody 22b ... Er Cong purifying chamber 24 sides are pressed, thereby contact with described netted dividing plate 37.
At the 2nd housing halfbody 22b, be provided with Carburetor mounting hole 47, described Carburetor mounting hole 47 is connected with the outer end of air outlet slit 21, and the diameter of described Carburetor mounting hole 47 is larger than the diameter of air outlet slit 21, the end, upstream of described Carburetor 10 is embedded in this Carburetor mounting hole 47 via O type circle 48.Therefore, purifying chamber 24 is communicated with the intake duct 10a of Carburetor 10 via air outlet slit 21.
In purifying chamber, 24 are equipped with buffer unit 49, and described buffer unit 49 covers the opening portion of air outlet slit 21 to reserve the mode of airspace 50.As shown in Figure 4, this buffer unit 49 consists of following part: covering wall 49a, and it covers the opening portion of air outlet slit 21 to reserve the mode of airspace 50; With the 49b of pair of flanges portion, 49b, it is bent to form in the two ends of this covering wall 49a, and engage with the inner side surface of the 2nd housing halfbody 22b, this lip part 49b, 49b are anchored on the 2nd housing halfbody 22b in the lump by pair of bolts 51,51, and described pair of bolts 51,51 will link up between the 2nd housing halfbody 22b and Carburetor 10.
In addition, outer side surface at the 2nd housing halfbody 22b is given prominence to and is provided with ventilating joint 53 integratedly, this ventilating joint 53 is connected with the downstream of described breathing pipe 15, and, the aeration vent hole 54 being communicated with the inner peripheral surface of described air outlet slit 21 in this ventilating joint 53 is given prominence to the outer side surface that is arranged at the 2nd housing halfbody 22b integratedly.
Next, the effect of this mode of execution is described.
In air-strainer A, at the intake stroke by motor E, outside air is flowed into not purifying chamber 23 from air inlet 20, outside air is filtered by the 1st filter element 35, netted dividing plate 37 and the 2nd filter element 36 successively.And in the air-strainer A of power finisher T, the 1st filter element 35 made of paper filters a large amount of dust dancing in the air because of cutter C as main body, therefore, the filtration of 36 pairs of dusts of the 2nd filter element that nonwoven is fabric burden is very little.And, owing to guaranteeing gapped 41 between the 1st filter element 35 and netted dividing plate 37, therefore, can avoid causing filter area to reduce because the 1st filter element 35 contacts with netted dividing plate 37, can give full play to the filtering function of 35 pairs of dusts of the 1st filter element.
Air after this spline filter 24 is inhaled into the intake duct 10a of Carburetor 10 via airspace 50 and air outlet slit 21 from purifying chamber, becomes the mixed gas forming with fuel mix, then from suction port 6, is supplied to firing chamber 4.
In the meantime, the blow-by gas producing in the crank chamber of motor E rises to valve Transmission Room 14, and via breathing pipe 15, ventilating joint 53 and aeration vent hole 54, be expelled to successively the air outlet slit 21 of air-strainer A, then be inhaled into the intake duct 10a of Carburetor 10, and be supplied to firing chamber 4 processing of burning together with described mixed gas.In addition, in this blow-by gas, according to the operating condition of motor E, the such situation of the spittle that existence contains lubricant oil, now, if blow phenomenon in motor E generation, can the 24 sides refluences from air outlet slit 21Xiang purifying chamber together with blow back body, still wherein buffer unit 49 inhibition of the opening portion of the capped air outlet slit 21 of the diffusion of the spittle of most of oil at the oily spittle existing of intake duct 10a midway.
, the oily spittle of a part is attached to the 2nd filter element 36 by airspace 50 and is captured, so it is prevented to the 1st dividing a word with a hyphen at the end of a line of filter element 35 sides.Therefore, can prevent because causing the 1st filter element 35 to stop up adhering to of oil.
And because the 2nd filter element 36 is the fabric parts of nonwoven, so the decline of its filtering function is less, the air that has passed through the 1st filter element 35 also can pass through the 2nd filter element 36 swimmingly.
And, due to hardly can adhesive dust on the 2nd fabric filter element 36 of nonwoven, therefore, can prevent from causing the 2nd filter element 36 to stop up because dust is attached to the oil adhering on the 2nd filter element 36.
Like this, can effectively prevent that the 1st and the 2nd filter element 35,36 both sides from stopping up, thereby can significantly improve the Durability of filter component 25, meanwhile, motor E always can suck the air after normal purification, has improved thus its durability.
If make the 1st and the 2nd housing halfbody 22a, 22b separated, can from them, take out bearing support 39 and the 2nd filter element 36 that the 1st filter element 35 and netted dividing plate 37 are supported, thus carry out two filter elements 35,36 cleaning or with the replacing of new parts.
The present invention is not limited by above-mentioned mode of execution, can carry out various design alterations in the situation that do not depart from the scope of its aim.For example, air-strainer of the present invention is not defined for power finisher, in its motor that can use at various working machines, uses.
Claims (3)
1. the air-strainer of a working machine engine, the air-strainer of described working machine engine is to become the mode of the not purifying chamber (23) being connected with air inlet (20) and the purifying chamber (24) being connected with air outlet slit (21) to set filter component (25) its interior separation and to form in filter case (22), described filter case (22) has the described air inlet (20) to atmosphere opening in a side, at opposite side, there is the described air outlet slit (21) being communicated with the Carburetor (10) of motor (E)
The air-strainer of described working machine engine is characterised in that,
By forming described filter component (25) in the face of the 1st filter element (35) made of paper of described not purifying chamber (23) with in the face of the 2nd fabric filter element (36) of nonwoven of described purifying chamber (24).
2. the air-strainer of working machine engine according to claim 1, is characterized in that,
In described purifying chamber (24), be equipped with buffer unit (49), described buffer unit (49) covers the opening portion of described air outlet slit (21) to reserve the mode of airspace (50).
3. the air-strainer of working machine engine according to claim 1, is characterized in that,
The peripheral part of the peripheral part of described the 2nd filter element (36) and the netted dividing plate (37) between the 2nd filter element (36) and described the 1st filter element (35) is supported on bearing support (39), the inner circle wall close contact of this bearing support (39) and described filter case (22) is provided with gap (41) between this netted dividing plate (37) and described the 1st filter element (35).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-177255 | 2012-08-09 | ||
| JPJP2012-177255 | 2012-08-09 | ||
| JP2012177255A JP2014034941A (en) | 2012-08-09 | 2012-08-09 | Air cleaner of engine for working machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103573487A true CN103573487A (en) | 2014-02-12 |
| CN103573487B CN103573487B (en) | 2016-10-05 |
Family
ID=50046046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310347030.5A Active CN103573487B (en) | 2012-08-09 | 2013-08-09 | The air filter of working machine engine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2014034941A (en) |
| CN (1) | CN103573487B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6421054B2 (en) * | 2015-03-02 | 2018-11-07 | 株式会社やまびこ | Portable work machine |
| JP6811269B2 (en) | 2019-02-25 | 2021-01-13 | 本田技研工業株式会社 | Internal combustion engine |
| CN113357060B (en) * | 2021-07-31 | 2023-02-28 | 扬州工业职业技术学院 | Automobile air filter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63215866A (en) * | 1987-03-02 | 1988-09-08 | Kawasaki Heavy Ind Ltd | Air cleaner element |
| JPH02163453A (en) * | 1988-12-15 | 1990-06-22 | Honda Motor Co Ltd | Air cleaner |
| US6336947B1 (en) * | 1998-08-27 | 2002-01-08 | Toyo Roki Seizo Kabushiki Kaisha | Air filter |
| JP2007211743A (en) * | 2006-02-13 | 2007-08-23 | Tigers Polymer Corp | Air cleaner |
| CN101300060A (en) * | 2005-09-08 | 2008-11-05 | 曼·胡默尔有限公司 | Separator for cleaning fluid streams |
| CN201258803Y (en) * | 2008-09-27 | 2009-06-17 | 姚国志 | Novel plate type oilpaper composite air filter |
-
2012
- 2012-08-09 JP JP2012177255A patent/JP2014034941A/en active Pending
-
2013
- 2013-08-09 CN CN201310347030.5A patent/CN103573487B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63215866A (en) * | 1987-03-02 | 1988-09-08 | Kawasaki Heavy Ind Ltd | Air cleaner element |
| JPH02163453A (en) * | 1988-12-15 | 1990-06-22 | Honda Motor Co Ltd | Air cleaner |
| US6336947B1 (en) * | 1998-08-27 | 2002-01-08 | Toyo Roki Seizo Kabushiki Kaisha | Air filter |
| CN101300060A (en) * | 2005-09-08 | 2008-11-05 | 曼·胡默尔有限公司 | Separator for cleaning fluid streams |
| JP2007211743A (en) * | 2006-02-13 | 2007-08-23 | Tigers Polymer Corp | Air cleaner |
| CN201258803Y (en) * | 2008-09-27 | 2009-06-17 | 姚国志 | Novel plate type oilpaper composite air filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103573487B (en) | 2016-10-05 |
| JP2014034941A (en) | 2014-02-24 |
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