CN209976602U - Muffler exhaust structure of four-stroke gasoline engine chain saw - Google Patents
Muffler exhaust structure of four-stroke gasoline engine chain saw Download PDFInfo
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- CN209976602U CN209976602U CN201920257813.7U CN201920257813U CN209976602U CN 209976602 U CN209976602 U CN 209976602U CN 201920257813 U CN201920257813 U CN 201920257813U CN 209976602 U CN209976602 U CN 209976602U
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Abstract
The utility model relates to a muffler exhaust structure of a four-stroke gasoline engine chain saw, which is arranged on an exhaust port of a muffler, belongs to the field of garden tools, and solves the technical problem that the exhaust gas discharged from the exhaust port of the muffler has too high temperature and does not conform to safety standards in the prior art; the spark capture net is arranged on the exhaust port, the housing is detachably arranged above the exhaust port, openings are formed in the left end and the right end of the housing, the gas blocking cover is arranged on one end opening of the housing, and the guide plate is arranged on the other end opening of the housing. The utility model discloses a vertical upwards discharge of waste gas, through blocking of housing shunt to the both ends opening of housing respectively, the flow direction keeps off the open-ended waste gas that the gas hood place opened-ended waste gas blocks the opening discharge that flows to the housing other end once more through keeping off the gas hood, makes gas vent exhaust waste gas through the change that stops many times and direction, and temperature and air current speed all reduce.
Description
Technical Field
The utility model relates to a garden instrument, concretely relates to muffler exhaust structure of four-stroke gasoline engine chain saw.
Background
The silencer is generally arranged on the engine in the prior art and used for eliminating noise generated by the engine, the silencer comprises a shell, an air inlet and an air outlet are formed in the shell, waste gas generated by the engine is directly discharged from the air outlet, and the temperature of the discharged waste gas is too high and does not accord with safety standards.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a muffler exhaust structure of four-stroke gasoline engine chain saw, solve among the prior art because the exhaust waste gas temperature of the gas vent of muffler is too high, be not conform to the technical problem of ann's rule standard.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
a muffler exhaust structure of a four-stroke gasoline engine chain saw is arranged on an exhaust port of a muffler, a spark capture net is arranged on the exhaust port, a cover shell is detachably arranged above the exhaust port, the left end and the right end of the cover shell are both provided with openings, an opening at one end of the cover shell is provided with an air blocking cover, and an opening at the other end of the cover shell is provided with a guide plate; the cover casing height is greater than the gas shield height, be equipped with the tonifying qi mouth between gas shield top and the cover casing.
By adopting the technical scheme, the waste gas discharged from the exhaust port is vertically discharged upwards, the waste gas is respectively shunted to the openings at the two ends of the housing through the blocking of the housing, the waste gas flowing to the opening where the gas blocking cover is located is blocked again through the gas blocking cover and discharged to the opening at the other end of the housing, the arrangement is such that the waste gas discharged from the exhaust port is subjected to multiple blocking and direction change, the temperature and the airflow speed are greatly reduced, the guide plate plays a role in guiding and blocking the waste gas, and the airflow speed of the waste gas at the opening of the housing is further reduced by arranging the guide plate; cold air in the environment enters the housing and the air blocking cover from the air supplementing port, so that the temperature of exhaust port waste gas is effectively reduced, and the damage to the shell of the mechanical silencer and the exhaust port is reduced.
Preferably, the housing is arranged in an Contraband shape, fixing lugs are arranged on two sides of the housing, and fixing holes are formed in the fixing lugs.
Through adopting above-mentioned technical scheme, the housing so sets up, has prolonged waste gas from the time of gas vent exhaust air to play the effect that reduces waste gas temperature and air current speed, the housing is through inserting the screw in the fixed orifices and can dismantle the setting, is convenient for change and maintain, and the setting of fixed ear makes the better laminating muffler casing of housing, connects stably.
Preferably, the gas blocking cover is an arc-shaped cover, the gas blocking cover is arranged towards an opening at one end of the housing, and the gas blocking cover is arranged at the end, back to the housing, of the housing in a sealing manner.
Through adopting above-mentioned technical scheme, keep off the effect that the gas hood played the secondary to gas vent exhaust and blockked, will keep off the gas hood setting and be the arc cover, make and keep off the gas hood and have a great appearance gas chamber, be convenient for hold more waste gases.
Preferably, the deflector includes an air guide extending from the opening of the enclosure to the exhaust port.
Through adopting above-mentioned technical scheme, set up the guide plate segmentation, wherein, the air guide is to the exhaust waste gas of gas vent exhaust to and the waste gas that blocks through keeping off the gas hood carries out the water conservancy diversion, lead waste gas to the housing smoothly and keep away from the export that keeps off the gas hood.
Preferably, the guide plate comprises a blocking part, and the blocking part is connected with the air guide part at an angle.
Through adopting above-mentioned technical scheme, fender portion then blocks the waste gas of flow through water conservancy diversion portion, and the waste gas air velocity that blocks through fender portion can further reduce.
Preferably, the guide plate includes reposition of redundant personnel portion, reposition of redundant personnel portion is angle joint with fender portion, and the equidistant a plurality of gas outlets that are equipped with of reposition of redundant personnel portion.
Through adopting above-mentioned technical scheme, set up the guide plate segmentation, the waste gas after blocking and connecting portion speed reduction then from the even row of gas outlet to the atmosphere of reposition of redundant personnel portion, exhaust waste gas air velocity and temperature all reduce greatly, accord with the safety standard.
Preferably, the spark catching net is made of a steel wire mesh.
By adopting the technical scheme, the steel wire mesh has higher tensile strength, fatigue resistance and impact toughness resistance, is good in wear resistance, shock resistance and corrosion resistance under the high-speed impact of exhaust gas, and is not easy to damage.
To sum up, the utility model has the advantages that:
compared with the prior art, the exhaust structure is arranged on the exhaust port of the chain saw silencer, so that the exhaust gas discharged from the exhaust port is subjected to multiple blocking and direction change, the temperature and the airflow speed of the exhaust gas are greatly reduced, and the safety standard is met; the spark capturing net is arranged on the exhaust port to prevent sparks from emerging, is safe to use, is made of a steel wire mesh, has good tensile strength, fatigue resistance and impact toughness, is good in wear resistance, shock resistance and corrosion resistance under high-speed impact of exhaust gas of the exhaust port, and is not easy to damage.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a partial structure of the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 1;
FIG. 4 is a schematic structural view of the housing of the present invention;
FIG. 5 is a schematic structural view of a deflector of the present invention;
fig. 6 is a schematic structural view of the middle air blocking cover of the present invention.
Reference numerals:
1. an exhaust port; 2. a spark capture net; 3. a housing; 31. fixing the ear; 32. a fixing hole; 4. a gas shield; 41. an air containing cavity; 5. a baffle; 51. an air guide part; 511. an air outlet; 52. a blocking part; 53. a flow dividing section; 6. an air supplement port; 7. a muffler housing.
Detailed Description
Example (b):
a muffler exhaust structure of a four-stroke gasoline engine chain saw is arranged on an exhaust port 1 of a muffler as shown in figures 1, 2, 3, 4, 5 and 6, a spark capturing net 2 is arranged on the exhaust port 1, a housing 3 can be detachably arranged above the exhaust port 1, openings are formed in the left end and the right end of the housing 3, a gas blocking cover 4 is arranged on an opening at one end of the housing 3, and a guide plate 5 is arranged on an opening at the other end of the housing 3.
So, the vertical upwards discharge of net 2 is caught through the spark to exhaust port 1 exhaust waste gas, block through housing 3 and shunt to the both ends opening of housing 3 respectively, the flow direction keeps off 4 open-ended waste gases at the position of gas hood through keeping off 4 and block the opening discharge of the flow direction housing 3 other end once more of gas hood, so set up, make exhaust port 1 exhaust waste gas through the change that blocks and the direction many times, temperature and air current speed all reduce greatly, and guide plate 5 plays the effect of water conservancy diversion and blockking to waste gas, further reduce the air current speed of the opening part waste gas of housing 3 through setting up guide plate 5.
The spark capturing net 2 is made of a steel wire mesh, the steel wire mesh has high tensile strength, fatigue resistance and impact toughness, and the spark capturing net is good in wear resistance, shock resistance and corrosion resistance and not easy to damage under the high-speed impact of the exhaust gas of the exhaust port 1.
3 highly be greater than the fender gas hood 4 height of housing, be equipped with between 4 tops of fender gas hood and the housing 3 and mend gas port 6, in the cold air in the environment got into housing 3 and fender gas hood 4 from mend gas port 6, effectively reduced the temperature of 1 waste gas in gas vent.
As shown in fig. 4, the housing 3 is arranged in an "Contraband" shape, the fixing lugs 31 are arranged on both sides of the housing 3, and the fixing lugs 31 are provided with fixing holes 32.
The housing 3 so sets up, has prolonged waste gas from the time of the 1 row of income air in gas vent to play the effect that reduces exhaust gas temperature and air velocity, the housing 3 is fixed through inserting the screw of establishing in fixed orifices 32, is convenient for change and maintain, and the setting of fixed ear 31 makes the better laminating muffler casing 7 of housing 3, connects stably.
As shown in fig. 5, the baffle 5 includes an air guide portion 51, a blocking portion 52 and a flow dividing portion 53, the air guide portion 51 extends from the opening of the housing 3 to the exhaust port 1, the blocking portion 52 is connected to the air guide portion 51 at a certain angle, the flow dividing portion 53 is connected to the blocking portion 52 at a certain angle, and the flow dividing portion 53 is provided with a plurality of air outlets 511 at equal intervals.
In detail, the flow guide plate 5 is provided in segments, wherein the air guide portion 51 guides the exhaust gas discharged from the exhaust port 1 and the exhaust gas blocked by the air blocking cover 4 to smoothly guide the exhaust gas to the casing 3 away from the outlet of the air blocking cover 4, the blocking portion 52 blocks the exhaust gas flowing through the air guide portion 51, the flow velocity of the exhaust gas blocked by the blocking portion 52 is further reduced, and the exhaust gas decelerated by the blocking portion 52 is uniformly discharged to the atmosphere from the air outlet 511 of the flow dividing portion 53.
As shown in fig. 6, the gas-blocking cover 4 is preferably configured as an arc-shaped cover, the gas-blocking cover 4 is disposed toward the opening of one end of the housing 3, and the gas-blocking cover 4 is disposed away from the opening of the other end of the housing 3.
The gas shield 4 plays a secondary blocking role for the exhaust gas discharged from the exhaust port 1, and the gas shield 4 is arranged to be an arc-shaped shield, so that the gas shield 4 has a larger gas containing cavity 41, thereby being convenient for containing more exhaust gas.
In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope of the present invention defined by the appended claims.
Claims (7)
1. The utility model provides a muffler exhaust structure of four-stroke gasoline engine chain saw sets up on the gas vent of muffler, its characterized in that: the spark capturing net is arranged on the exhaust port, a housing is detachably arranged above the exhaust port, the left end and the right end of the housing are both provided with openings, an air blocking cover is arranged on the opening at one end of the housing, and a guide plate is arranged on the opening at the other end of the housing; the cover casing height is greater than the gas shield height, be equipped with the tonifying qi mouth between gas shield top and the cover casing.
2. The muffler exhaust structure of a four-stroke gasoline engine chain saw as recited in claim 1, wherein: the cover casing is arranged in an Contraband shape, fixing lugs are arranged on two sides of the cover casing, and fixing holes are formed in the fixing lugs.
3. The muffler exhaust structure of a four-stroke gasoline engine chain saw as recited in claim 1, wherein: the gas blocking cover is an arc-shaped cover and is arranged towards an opening at one end of the housing, and the gas blocking cover is arranged opposite to the opening at one end of the housing.
4. The muffler exhaust structure of a four-stroke gasoline engine chain saw as recited in claim 1, wherein: the baffle includes an air guide extending from the opening of the shroud to the exhaust port.
5. The muffler exhaust structure of a four-stroke gasoline engine chain saw as recited in claim 4, wherein: the guide plate comprises a blocking and connecting part, and the blocking and connecting part is connected with the air guide part at an angle.
6. The muffler exhaust structure of a four-stroke gasoline chain saw as recited in claim 5, wherein: the guide plate includes reposition of redundant personnel portion, reposition of redundant personnel portion is the angle with fender portion and connects the portion to be connected, and the equidistant a plurality of gas outlets that are equipped with in reposition of redundant personnel portion.
7. The muffler exhaust structure of a four-stroke gasoline engine chain saw as recited in claim 1, wherein: the spark capturing net is made of a steel wire mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920257813.7U CN209976602U (en) | 2019-02-28 | 2019-02-28 | Muffler exhaust structure of four-stroke gasoline engine chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920257813.7U CN209976602U (en) | 2019-02-28 | 2019-02-28 | Muffler exhaust structure of four-stroke gasoline engine chain saw |
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| Publication Number | Publication Date |
|---|---|
| CN209976602U true CN209976602U (en) | 2020-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920257813.7U Active CN209976602U (en) | 2019-02-28 | 2019-02-28 | Muffler exhaust structure of four-stroke gasoline engine chain saw |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118114A (en) * | 2019-02-28 | 2019-08-13 | 浙江亚特电器有限公司 | A kind of exhaust structure for muffler of four-stroke gasoline engine chain saw |
-
2019
- 2019-02-28 CN CN201920257813.7U patent/CN209976602U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118114A (en) * | 2019-02-28 | 2019-08-13 | 浙江亚特电器有限公司 | A kind of exhaust structure for muffler of four-stroke gasoline engine chain saw |
| CN110118114B (en) * | 2019-02-28 | 2023-10-13 | 浙江亚特电器股份有限公司 | Muffler exhaust structure of four-stroke petrol engine chain saw |
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Address after: No. 150 Wenlong Road, Yuxin Town, Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Yate Electric Appliance Co.,Ltd. Address before: No. 150 Wenlong Road, Yuxin Town, Nanhu District, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG YAT ELECTRICAL APPLIANCE Co.,Ltd. |