CN108590891B - Carburetor for general purpose engine - Google Patents
Carburetor for general purpose engine Download PDFInfo
- Publication number
- CN108590891B CN108590891B CN201810454476.0A CN201810454476A CN108590891B CN 108590891 B CN108590891 B CN 108590891B CN 201810454476 A CN201810454476 A CN 201810454476A CN 108590891 B CN108590891 B CN 108590891B
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- CN
- China
- Prior art keywords
- carburetor
- air
- communicated
- air passage
- air outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000926 separation method Methods 0.000 claims abstract description 17
- 238000005192 partition Methods 0.000 claims description 26
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims 1
- 238000005273 aeration Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
- F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
- F02M17/44—Carburettors characterised by draught direction and not otherwise provided for, e.g. for model aeroplanes
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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
- F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
- F02M17/44—Carburettors characterised by draught direction and not otherwise provided for, e.g. for model aeroplanes
- F02M17/46—Carburettors characterised by draught direction and not otherwise provided for, e.g. for model aeroplanes with down- draught
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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
- F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
- F02M17/44—Carburettors characterised by draught direction and not otherwise provided for, e.g. for model aeroplanes
- F02M17/48—Carburettors characterised by draught direction and not otherwise provided for, e.g. for model aeroplanes with up- draught and float draught, e.g. for lawnmower and chain saw motors
-
- 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
- F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
Abstract
The invention discloses a carburetor for a general gasoline engine, which comprises a carburetor body (2) with a main air passage (1), wherein one end of the carburetor body (1) is a carburetor mounting surface (3), and is characterized in that: an air passage with one end communicated with the outside is arranged in the carburetor body (2) and above the main air passage (1); an air inlet hole (4) communicated with the air passage and an air vent hole (5) communicated with the inner cavity of the carburetor body (2) are respectively arranged on the carburetor mounting surface (3); a separation box (7) with a cover plate (6) is arranged on the carburetor mounting surface (3), and the vent hole (5) is communicated with the air inlet hole (4) through the separation box (7). The invention has the advantages of ingenious structural design, low cost and reliable use, and can effectively prevent the occurrence of the phenomenon of gasoline ejection of the carburetor under the conditions of high temperature, high vibration and inclination, thereby ensuring the normal operation of the general gasoline engine.
Description
Technical Field
The invention relates to a carburetor, in particular to a carburetor for a general purpose engine.
Background
At present, a carburetor is used as one of key parts on a general gasoline engine, plays a crucial role on the performance of the general gasoline engine, and particularly has influence on dynamic performance, starting performance, discharge level and the like.
The existing carburetor mainly comprises a carburetor body with a main air passage, wherein an air passage communicated with the main air passage is vertically arranged in the carburetor body, and the carburetor balances the gasoline pressure in an oil quilt by means of the air passage. Although the carburetor is feasible, the carburetor can be finally applied to the terminal after being mounted on the general gasoline engine, the terminal is severe in operation environment, high in use temperature, very large in vibration and large in inclination angle, and therefore the carburetor can be subjected to oil injection phenomenon in the operation process and after shutdown, operation is unstable, and the general gasoline engine cannot work normally.
Disclosure of Invention
The invention aims to provide a carburetor for a general purpose engine, which can effectively prevent oil injection.
The invention aims at realizing the technical scheme that the carburetor for the general gasoline engine comprises a carburetor body with a main air passage, wherein one end of the carburetor body is a carburetor mounting surface, and an air passage with one end communicated with the outside is arranged above the main air passage in the carburetor body; an air inlet communicated with the air duct and an air vent communicated with the inner cavity of the carburetor body are respectively arranged on the carburetor mounting surface; the carburetor mounting surface is provided with a separation box with a cover plate, and the vent hole is communicated with the air inlet hole through the separation box.
The separation box comprises a box body, an opening is formed in one side of the box body, and the cover plate is arranged on the opening; the inner cavity of the box body is provided with diamond-shaped bumps with air holes A, the cover plate is provided with air holes B, air outlet holes and inlet holes are respectively formed in the upper portion and the lower portion of the air holes B, the air holes are communicated with the lower portion of the inner cavity of the box body through the inlet holes, and the air inlet holes are communicated with the upper portion of the inner cavity of the box body through the air outlet holes.
Further described, a baffle plate is arranged in the box body and above the diamond-shaped convex blocks; the partition board comprises a partition board A and a partition board B which are symmetrically arranged, wherein the upper end of the partition board A and the upper end of the partition board B are connected with the inner wall of the top of the box body, and the partition board A and the partition board B are arranged in an inverted splayed manner; the lower ends of the partition plates A and B are provided with gaps with the upper end faces of the diamond-shaped bulges.
In order to further separate oil and gas, baffle plates A and B are obliquely arranged at two ends of the diamond-shaped convex blocks respectively, and the baffle plates A and B are arranged in a splayed manner; the lower end of the baffle A and the lower end of the baffle B are respectively provided with a gap with the inner wall of the box body.
Further, the air passage comprises a transverse air passage and a longitudinal air passage, one end of the transverse air passage is communicated with the air inlet, the other end of the transverse air passage is communicated with the middle of the longitudinal air passage, and two ends of the longitudinal air passage are respectively communicated with the outside.
In order to prevent the carburetor from tilting or swinging, the transverse air passages are blocked by gasoline, one of the transverse air passages is kept smooth, and at least two transverse air passages are provided, and at least two air inlet holes and at least two air outlet holes are communicated with the transverse air passages.
In order to further prevent gasoline from being sprayed out, two ends of the longitudinal air passage are respectively provided with an air vent nozzle, and the air vent nozzle is arranged in a horizontal vertical longitudinal air passage or in a vertical longitudinal air passage.
Further, an air outlet pipeline A and an air outlet pipeline B are respectively arranged on the aeration nozzle.
The air outlet end of the air outlet pipeline A or/and the air outlet end of the air outlet pipeline B are arranged upwards or/and downwards according to different actual use conditions.
In order to further prevent the oil vapor from carrying out of the gasoline, opposite ends of the air outlet pipeline A and the air outlet pipeline B are connected through a tee joint.
In order to filter oil and block gasoline in steam, a filter screen is arranged in the box body or/and the transverse air passage or/and the longitudinal air passage or/and the air outlet pipeline A or/and the air outlet pipeline B.
Due to the adoption of the technical scheme, the invention has the advantages of ingenious structural design, low cost and reliable use, and can effectively prevent the occurrence of the phenomenon of gasoline ejection of the carburetor under the conditions of high temperature, high vibration and inclination, thereby ensuring the normal operation of the general gasoline engine.
Drawings
The drawings of the present invention are described as follows:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a carburetor of the present invention;
FIG. 3 is a horizontal cross-sectional view of FIG. 2;
fig. 4 is a perspective view of fig. 13;
FIG. 5 is a schematic view of a second construction of a carburetor of the present invention;
FIG. 6 is a schematic view of a third construction of a carburetor of the present invention;
FIG. 7 is a fourth schematic view of a carburetor of the present invention;
FIG. 8 is a fifth schematic diagram of a carburetor of the present invention;
FIG. 9 is a sixth schematic view of a carburetor of the present invention;
FIG. 10 is a cross-sectional view of FIG. 9;
FIG. 11 is a seventh structural schematic diagram of a carburetor of the present invention;
FIG. 12 is a schematic view of an eighth embodiment of a carburetor of the present invention;
FIG. 13 is a schematic view of a tenth construction of a carburetor of the present invention;
FIG. 14 is a schematic view of a first configuration of a separation cassette screen of the present invention;
fig. 15 is a schematic view of a second configuration of a separation cassette screen of the present invention.
Detailed Description
The following detailed description of the invention is provided in connection with the accompanying drawings, but the invention is not limited to these embodiments, but is intended to cover any modifications or alternatives within the basic spirit of the invention as defined by the appended claims.
Example 1: as shown in fig. 1, 2, 3, 4, 5, 6, 7 and 8, a carburetor for a general gasoline engine comprises a carburetor body 2 with a main air passage 1, wherein one end of the carburetor body 1 is a carburetor mounting surface 3, and an air passage with one end communicated with the outside is arranged in the carburetor body 2 and above the main air passage 1; an air inlet 4 communicated with the air duct and an air vent 5 communicated with the inner cavity of the carburetor body 2 are respectively arranged on the carburetor mounting surface 3; the carburetor mounting surface 3 is provided with a separation case 7 with a cover plate 6, and the ventilation hole 5 communicates with the air intake hole 4 through the separation case 7.
Wherein the separation box 7 comprises a box body, an opening is arranged on one side of the box body, and the cover plate 6 is arranged on the opening; the inner cavity of the box body is provided with a diamond-shaped lug 9 with an air hole A8, the cover plate 6 is provided with an air hole B11, an air outlet hole 13 and an air inlet hole 12 are respectively arranged above and below the air hole B11, the air hole 5 is communicated with the lower part of the inner cavity of the box body through the air inlet hole 12, and the air inlet hole 4 is communicated with the upper part of the inner cavity of the box body through the air outlet hole 13.
Further, a partition plate is arranged in the box body and above the diamond-shaped convex blocks 9; in order to facilitate the separation of oil and gas, the partition plate comprises a partition plate A10 and a partition plate B14 which are symmetrically arranged, wherein the upper end of the partition plate A10 and the upper end of the partition plate B14 are connected with the inner wall of the top of the box body, and the partition plate A10 and the partition plate B14 are arranged in an inverted splayed shape; the lower ends of the partition plates A10 and B14 are provided with gaps with the upper end faces of the diamond-shaped bulges 9.
Further, in order to enhance the separation of oil and gas, two ends of the diamond-shaped protruding block 9 are respectively and obliquely provided with a baffle A15 and a baffle B16, and the baffle A15 and the baffle B16 are arranged in a splayed shape; the lower end of the baffle A15 and the lower end of the baffle B16 are respectively provided with a gap with the inner wall of the box body.
Further, the air passage comprises a transverse air passage 17 and a longitudinal air passage 18, one end of the transverse air passage 17 is communicated with the air inlet hole 4, the other end of the transverse air passage 17 is communicated with the middle part of the longitudinal air passage 18, and two ends of the longitudinal air passage 18 are respectively communicated with the outside.
In order to prevent the carburetor from tilting or swinging, the transverse air passages are blocked by gasoline, and one of the transverse air passages is kept smooth, and at least two transverse air passages 17 are provided, and at least two air inlet holes 4 and at least two air outlet holes 13 are provided, wherein the air inlet holes 4 and the air outlet holes 13 are communicated with the transverse air passages 17.
In order to further prevent the gasoline from being sprayed out, aeration nozzles 19 are respectively arranged at two ends of the longitudinal air passage 18, and the aeration nozzles 19 are horizontally and vertically arranged on the longitudinal air passage 18.
Further, an air outlet pipe a20 and an air outlet pipe B21 are provided on the aeration nozzle 19, respectively.
In the invention, when the general gasoline engine normally operates, the temperature of the carburetor can be continuously increased, so that the gasoline in the carburetor is continuously volatilized, and the carburetor continuously vibrates under the normal operation of the general gasoline engine, so that the volatilization of the gasoline is accelerated, the volatilized oil vapor enters the lower part in the separation box 7 through the vent hole 5 and the inlet hole 12, then enters the transverse air passage 17 and the longitudinal air passage 18 through the air outlet hole 13 and the inlet hole 4, and finally enters the atmosphere, thereby realizing the balance between the internal oil plane of the carburetor and the external atmospheric pressure. Because the running path of the oil vapor is long, the oil vapor is separated in the separation box 7 or the transverse air passage 17 or the longitudinal air passage 18, and finally the gas is discharged, and the gasoline can not be sprayed out.
Example 2: as shown in fig. 9, 10 and 11, aeration nozzles 19 are respectively arranged at two ends of the longitudinal air passage 18, and the aeration nozzles 19 are vertically arranged on the longitudinal air passage 18.
Example 3: as shown in fig. 5, the outlet end of the outlet pipe a12 and the outlet end of the outlet pipe B13 may be disposed downward at the same time.
Example 4: as shown in fig. 6, the outlet end of the outlet pipe a12 and the outlet end of the outlet pipe B13 may be disposed upward at the same time.
Example 5: as shown in fig. 7, the outlet end of the outlet pipe a12 is disposed downward, and the outlet end of the outlet pipe B13 is disposed upward.
Example 6: as shown in fig. 8, the air outlet end of the air outlet pipe a12 is disposed upward, and the air outlet end of the air outlet pipe B13 is disposed downward.
Example 7: as shown in fig. 9, to further prevent the oil vapor from carrying out of the gasoline, the opposite ends of the air outlet pipe a20 and the air outlet pipe B21 are connected by a tee 22 joint.
Example 8: as shown in fig. 12, 13, 14 and 15, a filter screen 23 is arranged in the box body or/and the transverse air passage 17 or/and the longitudinal air passage 18 or/and the air outlet pipeline A21 or/and the air outlet pipeline B22.
Claims (9)
1. The utility model provides a carburetor for general purpose engine, includes carburetor body (2) that have main air flue (1), carburetor body (2) one end is carburetor installation face (3), characterized by: an air passage with one end communicated with the outside is arranged in the carburetor body (2) and above the main air passage (1); an air inlet hole (4) communicated with the air passage and an air vent hole (5) communicated with the inner cavity of the carburetor body (2) are respectively arranged on the carburetor mounting surface (3); a separation box (7) with a cover plate (6) is arranged on the carburetor mounting surface (3), and the vent hole (5) is communicated with the air inlet hole (4) through the separation box (7); the separation box (7) comprises a box body, an opening is formed in one side of the box body, and the cover plate (6) is arranged on the opening; a diamond-shaped lug (9) with an air hole A (8) is arranged in the inner cavity of the box body, and the diamond-shaped lug (9) divides the inner cavity of the box body into an upper part and a lower part; an air hole B (11) is formed in the cover plate (6), an air outlet hole (13) and an inlet hole (12) are respectively formed in the upper portion and the lower portion of the air hole B (11), the air vent (5) is communicated with the lower portion of the inner cavity of the box body through the inlet hole (12), and the air inlet hole (4) is communicated with the upper portion of the inner cavity of the box body through the air outlet hole (13); a baffle plate is arranged in the box body and above the diamond-shaped convex blocks (9); the partition board comprises a partition board A (10) and a partition board B (14) which are symmetrically arranged, wherein the upper end of the partition board A (10) and the upper end of the partition board B (14) are connected with the inner wall of the top of the box body, and the partition board A (10) and the partition board B (14) are arranged in an inverted splayed shape; the lower ends of the partition plates A (10) and the lower ends of the partition plates B (14) are provided with gaps with the upper end faces of the diamond-shaped lugs (9).
2. A carburetor for a general engine according to claim 1, wherein: baffle A (15) and baffle B (16) are obliquely arranged at two ends of the diamond-shaped convex blocks (9), and the baffle A (15) and the baffle B (16) are arranged in a splayed shape; the lower end of the baffle A (15) and the lower end of the baffle B (16) are respectively connected with the box body.
3. A carburetor for a general engine according to claim 2, wherein: the air passage comprises a transverse air passage (17) and a longitudinal air passage (18), one end of the transverse air passage (17) is communicated with the air inlet hole (4), the other end of the transverse air passage (17) is communicated with the middle of the longitudinal air passage (18), and two ends of the longitudinal air passage (18) are respectively communicated with the outside.
4. A carburetor for a general engine according to claim 3, wherein: the number of the transverse air passages (17) is at least two, and the number of the air inlet holes (4) and the air outlet holes (13) which are communicated with the transverse air passages (17) is at least two.
5. A carburetor for a general engine according to claim 4, wherein: and ventilation nozzles (19) are respectively arranged at two ends of the longitudinal ventilation duct (18), and the ventilation nozzles (19) are arranged horizontally and vertically to the longitudinal ventilation duct (18) or are arranged vertically and vertically to the longitudinal ventilation duct (18).
6. A carburetor for a general engine according to claim 5, wherein: an air outlet pipe A (20) and an air outlet pipe B (21) are respectively arranged on the air vent nozzle (19).
7. A carburetor for a general engine according to claim 6, wherein: the air outlet end of the air outlet pipeline A (20) and/or the air outlet end of the air outlet pipeline B (21) are/is arranged upwards or downwards.
8. A carburetor for a general engine according to claim 7, wherein: opposite ends of the air outlet pipeline A (20) and the air outlet pipeline B (21) are connected through a tee joint (22) joint.
9. A carburetor for a general engine according to any one of claims 1-8, wherein: a filter screen (23) is arranged in the box body or/and the transverse air passage (17) or/and the longitudinal air passage (18) or/and the air outlet pipeline A (20) or/and the air outlet pipeline B (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810454476.0A CN108590891B (en) | 2018-05-14 | 2018-05-14 | Carburetor for general purpose engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810454476.0A CN108590891B (en) | 2018-05-14 | 2018-05-14 | Carburetor for general purpose engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108590891A CN108590891A (en) | 2018-09-28 |
| CN108590891B true CN108590891B (en) | 2023-11-17 |
Family
ID=63637043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810454476.0A Active CN108590891B (en) | 2018-05-14 | 2018-05-14 | Carburetor for general purpose engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108590891B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB434173A (en) * | 1934-02-01 | 1935-08-27 | Charles Drouin | Improvements in carburettors for internal combustion engines |
| JP2002221096A (en) * | 2001-01-26 | 2002-08-09 | Keihin Corp | Air vent device of caburetor |
| CN201100156Y (en) * | 2007-10-18 | 2008-08-13 | 陈维加 | Engine oil return box |
| CN203257564U (en) * | 2013-05-22 | 2013-10-30 | 重庆宗申发动机制造有限公司 | Electrically-controlled carburetor on general motor |
| CN203892067U (en) * | 2014-04-08 | 2014-10-22 | 重庆科邦机械制造有限公司 | Improved structure of carburettor |
| CN203948196U (en) * | 2014-05-23 | 2014-11-19 | 福鼎市创新动力设备有限公司 | The improved Carburetor of a kind of equalizing orifice gas channel |
| CN208534645U (en) * | 2018-05-14 | 2019-02-22 | 重庆宗申通用动力机械有限公司 | A kind of logical machine carburetor |
-
2018
- 2018-05-14 CN CN201810454476.0A patent/CN108590891B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB434173A (en) * | 1934-02-01 | 1935-08-27 | Charles Drouin | Improvements in carburettors for internal combustion engines |
| JP2002221096A (en) * | 2001-01-26 | 2002-08-09 | Keihin Corp | Air vent device of caburetor |
| CN201100156Y (en) * | 2007-10-18 | 2008-08-13 | 陈维加 | Engine oil return box |
| CN203257564U (en) * | 2013-05-22 | 2013-10-30 | 重庆宗申发动机制造有限公司 | Electrically-controlled carburetor on general motor |
| CN203892067U (en) * | 2014-04-08 | 2014-10-22 | 重庆科邦机械制造有限公司 | Improved structure of carburettor |
| CN203948196U (en) * | 2014-05-23 | 2014-11-19 | 福鼎市创新动力设备有限公司 | The improved Carburetor of a kind of equalizing orifice gas channel |
| CN208534645U (en) * | 2018-05-14 | 2019-02-22 | 重庆宗申通用动力机械有限公司 | A kind of logical machine carburetor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108590891A (en) | 2018-09-28 |
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