CN201661348U - Air duct distribution structure of air-cooled internal combustion engine - Google Patents
Air duct distribution structure of air-cooled internal combustion engine Download PDFInfo
- Publication number
- CN201661348U CN201661348U CN2010201223269U CN201020122326U CN201661348U CN 201661348 U CN201661348 U CN 201661348U CN 2010201223269 U CN2010201223269 U CN 2010201223269U CN 201020122326 U CN201020122326 U CN 201020122326U CN 201661348 U CN201661348 U CN 201661348U
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- cylinder head
- air channel
- air
- air duct
- combustion engine
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to an air duct distribution structure of an air-cooled internal combustion engine, which comprises a crankshaft box body and a cylinder head, wherein one side of the crankshaft box body is provided with a fly wheel, the peripheral outer side of the fly wheel is provided with impellers, outside which a wind scooper is arranged, the cylinder head is provided with an inlet valve and an exhaust valve which are used for opening and closing a combustion chamber, the line of centers of the inlet valve and the exhaust valve and an axis vertical to the wind scooper form an included angle, the cylinder head is provided with a cooling air duct penetrating through the solid part of the cylinder head and comprising a left air duct, a middle air duct and a right air duct, wherein the left air duct passes through an inlet passage and a tappet chamber, the middle air duct passes through the solid part between the inlet valve and the exhaust valve, and the right air duct passes through an exhaust passage; and the bottom of the crankshaft box body is provided with a lower air duct used for cooling the crankshaft box body and engine oil. By reasonable distribution of the air ducts, the air duct distribution structure leads to simple wind guiding structure and more even cooling, and eliminates the phenomena of dead angles of cooling and the like.
Description
Technical field
The utility model relates to small-sized air-cooled internal combustion engine, is specifically related to a kind of air channel layout of air-cooled internal combustion engine.
Background technique
In the small-sized air-cooled internal combustion engine, produce air-flow,, deliver to the place that needs cooling through water conservancy diversion such as wind scooper, air guide sleeves by the impeller rotation.Internal-combustion engine relies on the cylinder block surface some radiating fin is set, and enlarges heat diffusion area by these radiating fin, utilizes from body surface and radiating fin and takes away the heat of engine body through the via flow cool air, realizes wind cooling temperature lowering.The wind guiding structure complexity of existing air-cooled internal combustion engine often needs 2～3 air guide sleeves, and the cooling position is inhomogeneous, even phenomenons such as dead angle are cooled off in appearance.Especially reach cylinder entity part on every side around the firing chamber, can assemble a large amount of high heat and cool air can't contact these positions, form the cooling blind spot, therefore cause the heat radiation of existing air-cooled internal combustion engine bad, influence the performance of motor, be difficult to give play to the best performance state of motor.
Summary of the invention
The purpose of this utility model provides a kind of air channel layout of air-cooled internal combustion engine, by the reasonable Arrangement air-flow path, makes wind guiding structure simple, cools off phenomenons such as more even, elimination cooling dead angle.
The purpose of this utility model is achieved in that the air channel layout of air-cooled internal combustion engine, comprise crankcase body, cylinder head, crankcase body one side is provided with flywheel, flywheel week is provided with impeller laterally, the impeller outside is covered with the wind scooper of cooling blast being guided to the cylinder head side, described cylinder head is provided with intake valve and the exhaust valve that opens and closes the firing chamber, the line of centres of intake valve and exhaust valve and described axis perpendicular to wind scooper form an angle, described cylinder head is provided with the cooling duct that runs through the cylinder head entity part, described cooling duct comprises left air channel, middle air channel and right air channel, air channel, a left side is through gas-entered passageway, the tappet chamber, middle air channel is through the entity part between intake valve and the exhaust valve, and right air channel is through the exhaust passage; Described crankcase body bottom is provided with the lower air duct that is used to cool off crankcase body and machine oil.
The import in air channel is communicated with the import in right air channel in the middle of described.
Install described wind scooper top is free filter, the gas-entered passageway of cylinder head to extend wind scooper to be communicated with empty filter.
Described cylinder head right side is equipped with silencing apparatus, and the suction tude of silencing apparatus is communicated with the exhaust passage of cylinder head.
Cavity in described lower air duct and the wind scooper is communicated with.
Owing to adopt technique scheme, the impeller outside is covered with the wind scooper of cooling blast being guided to the cylinder head side, the air-flow that the impeller rotation produces is under the guide functions of wind scooper, upside passes through lower air duct through cooling duct, the downside that runs through the cylinder head entity part, difference countercylinder head, crankcase body and machine oil fully cool off.Described cylinder head is provided with intake valve and the exhaust valve that opens and closes the firing chamber, the line of centres of intake valve and exhaust valve and described axis perpendicular to wind scooper form an angle, middle air channel is passed through from the entity part between intake valve and the exhaust valve, utilize inclined valve to arrange, cool off more even, make cylinder head cooling more abundant, eliminate phenomenon such as cooling dead angle.The cooling duct of described cylinder head comprises left air channel, middle air channel and right air channel, and the crankcase body bottom is provided with lower air duct, makes cylinder head, crankcase body have cooling duct respectively, has reduced the complexity of wind guiding structure.And in the crankcase body bottom lower air duct is set, crankcase body and machine oil are fully cooled off.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
The schematic representation that Fig. 3 flows and cools off for cooling air.
In the accompanying drawing, 1 is bent axle, and 2 is cylinder head, and 3 is silencing apparatus, and 4 is flywheel, 5 is empty filter, and 6 is fuel tank, and 7 is wind scooper, and 8 is right air channel, and 9 is left air channel, 10 is gas-entered passageway, and 11 is the exhaust passage, and 12 is air guide sleeve, and 13 is connecting bolt, and 14 is exhaust valve, 15 is intake valve, and 16 is the tappet chamber, and 17 is cylinder head, and 18 is oil sprayer, 19 is starting electrical machinery, and 20 is impeller, and 21 is fixing bolt, and 22 is crankcase body, 23 is the air channel stenosis, and 24 is middle air channel, and 25 is lower air duct, and A is an angle.
Embodiment
Referring to figs. 1 through Fig. 3, the air channel layout of air-cooled internal combustion engine comprises crankcase body 22, cylinder head 2, and crankcase body 22 upper right quarters are equipped with starting electrical machinery 19, are used for the startup of internal-combustion engine.Crankcase body 22 1 sides are provided with flywheel 4, flywheel 4 is set in bent axle 1 one ends, rotate with crankshaft rotating, 4 weeks of flywheel are provided with impeller 20 laterally, and impeller 20 produces cooling air with the flywheel rotation, impeller 20 outsides are covered with wind scooper 7, wind scooper 7 covers whole crankcase body side, and wind scooper 7 is guided to cylinder head 2 sides to cooling blast, and the right side is an air channel stenosis 23 in the wind scooper, cooling blast mainly in the wind scooper left side upwards flow, arrive cylinder head.Wind scooper 7 is fixedly mounted on the crankcase body 22 by fixing bolt 21.Installing directly over the wind scooper 7 is free filter 5, and empty filter 5 is used to provide fresh air.Crankcase body 22 opposite sides are bent axle 1 output terminal, are used for power is passed from internal-combustion engine.Crankcase body 22 upsides are cylinder head 2, are stamped cylinder head 17 on the cylinder head 2, and cylinder head 17 is mounted on the cylinder head 2 by some connecting bolts 13.Cylinder head 2 is provided with some radiating fin.Cylinder head 2 left sides are equipped with fuel tank 6, and cylinder head 2 right sides are equipped with silencing apparatus 3.Cylinder head 2 is provided with gas-entered passageway 10 and exhaust passage 11, gas-entered passageway 10 is positioned at wind scooper one side is installed, gas-entered passageway 10 extends wind scooper and is communicated with empty filter 5, and exhaust passage 11 is positioned at bent axle 1 output terminal one side, and the exhaust passage 11 of cylinder head is communicated with the suction tude of silencing apparatus 3.Cylinder head 2 is positioned at the exhaust passage and exports a side and be provided with air guide sleeve 12, is used for flow-guiding radiation.Described cylinder head 2 is provided with intake valve 15 and the exhaust valve 14 that opens and closes the firing chamber, and intake valve 15 is used to open and close gas-entered passageway and firing chamber, and exhaust valve 14 is used to open and close exhaust passage and firing chamber.Intake valve 15 forms an included angle A with the line of centres of exhaust valve 14 with described axis perpendicular to wind scooper, utilizes inclined valve to arrange, make cylinder head cool off more abundant, do not cool off the dead angle.Cylinder head 2 tops are provided with oil sprayer 18, and oil sprayer 18 is communicated with the firing chamber, for the firing chamber provides fuel oil.Described cylinder head 2 is provided with the cooling duct that runs through the cylinder head entity part, described cooling duct comprises left air channel 9, middle air channel 24 and right air channel 8, air channel 9, a left side is through gas-entered passageway 10, tappet chamber 16, gas-entered passageway 10 and tappet chamber 16 are cooled off simultaneously in air channel 9, a left side between gas-entered passageway 10 and tappet chamber 16.Middle air channel 24 is from the entity part process between intake valve 15 and the exhaust valve 14, cooling combustion chamber, intake valve and exhaust valve.Right air channel 8 is through exhaust passage 11, the coolant exhaust passage.The import in air channel 24 is communicated with the import in right air channel 8 in the middle of described.Described crankcase body 22 bottoms are provided with the lower air duct 25 that is used to cool off crankcase body and machine oil.Cavity in lower air duct 25 and the wind scooper is communicated with, and cooling blast is partly passed through from lower air duct.
During air-cooled internal combustion engine work: the air-flow that impeller 20 rotations produce is under the guide functions of wind scooper 7, pass through left air channel 9, middle air channel 24 and the right air channel 8 of the lower air duct 25 and the cylinder head of crankcase body respectively, so respectively crankcase body 22 and machine oil and cylinder head 2 are fully cooled off.And wind guiding structure is simple, cools off phenomenons such as more even, elimination cooling dead angle.
Claims (5)
1. the air channel layout of an air-cooled internal combustion engine, comprise crankcase body, cylinder head, crankcase body one side is provided with flywheel, flywheel week is provided with impeller laterally, the impeller outside is covered with the wind scooper of cooling blast being guided to the cylinder head side, it is characterized in that: described cylinder head is provided with intake valve and the exhaust valve that opens and closes the firing chamber, the line of centres of intake valve and exhaust valve and described axis perpendicular to wind scooper form an angle, described cylinder head is provided with the cooling duct that runs through the cylinder head entity part, described cooling duct comprises left air channel, middle air channel and right air channel, air channel, a left side is through gas-entered passageway, the tappet chamber, middle air channel is through the entity part between intake valve and the exhaust valve, and right air channel is through the exhaust passage; Described crankcase body bottom is provided with the lower air duct that is used to cool off crankcase body and machine oil.
2. the air channel layout of air-cooled internal combustion engine according to claim 1 is characterized in that: the import in air channel is communicated with the import in right air channel in the middle of described.
3. the air channel layout of air-cooled internal combustion engine according to claim 1 is characterized in that: install described wind scooper top is free filter, the gas-entered passageway of cylinder head to extend wind scooper to be communicated with empty filter.
4. the air channel layout of air-cooled internal combustion engine according to claim 1, it is characterized in that: described cylinder head right side is equipped with silencing apparatus, and the suction tude of silencing apparatus is communicated with the exhaust passage of cylinder head.
5. the air channel layout of air-cooled internal combustion engine according to claim 1 is characterized in that: described lower air duct is communicated with cavity in the wind scooper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201223269U CN201661348U (en) | 2010-03-03 | 2010-03-03 | Air duct distribution structure of air-cooled internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201223269U CN201661348U (en) | 2010-03-03 | 2010-03-03 | Air duct distribution structure of air-cooled internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661348U true CN201661348U (en) | 2010-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201223269U Expired - Fee Related CN201661348U (en) | 2010-03-03 | 2010-03-03 | Air duct distribution structure of air-cooled internal combustion engine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011134380A1 (en) * | 2010-04-26 | 2011-11-03 | 隆鑫通用动力股份有限公司 | Cylinder head valve arrangement structure and air-cooled diesel engine including the same |
| CN107143409A (en) * | 2017-07-03 | 2017-09-08 | 重庆隆鑫发动机有限公司 | Wind gathering plate and its installation constitution |
| CN109944674A (en) * | 2019-03-18 | 2019-06-28 | 重庆龙力动力设备有限公司 | A kind of air-cooled component of universal vertical axis engine |
| CN114412625A (en) * | 2022-01-14 | 2022-04-29 | 重庆龙力动力设备有限公司 | Forced air cooling structure of mute engine and mute generator |
-
2010
- 2010-03-03 CN CN2010201223269U patent/CN201661348U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011134380A1 (en) * | 2010-04-26 | 2011-11-03 | 隆鑫通用动力股份有限公司 | Cylinder head valve arrangement structure and air-cooled diesel engine including the same |
| CN107143409A (en) * | 2017-07-03 | 2017-09-08 | 重庆隆鑫发动机有限公司 | Wind gathering plate and its installation constitution |
| CN109944674A (en) * | 2019-03-18 | 2019-06-28 | 重庆龙力动力设备有限公司 | A kind of air-cooled component of universal vertical axis engine |
| CN114412625A (en) * | 2022-01-14 | 2022-04-29 | 重庆龙力动力设备有限公司 | Forced air cooling structure of mute engine and mute generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20160303 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |