CN220434876U - Wind-water double-cooling two-stroke internal combustion engine and portable fire pump - Google Patents
Wind-water double-cooling two-stroke internal combustion engine and portable fire pump Download PDFInfo
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- CN220434876U CN220434876U CN202322018930.7U CN202322018930U CN220434876U CN 220434876 U CN220434876 U CN 220434876U CN 202322018930 U CN202322018930 U CN 202322018930U CN 220434876 U CN220434876 U CN 220434876U
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- 238000001816 cooling Methods 0.000 title claims abstract description 98
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 47
- 238000007789 sealing Methods 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 8
- 239000002826 coolant Substances 0.000 abstract description 3
- 239000000498 cooling water Substances 0.000 description 10
- 239000010705 motor oil Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The wind-water double-cooling two-stroke internal combustion engine and the portable fire pump are characterized in that a crankshaft extends out from the cylinder body from inside to outside to form an outer end part, and a cooling fan is arranged on the outer end part; the outer wall of the cylinder body is also provided with a cylinder head cover, a water cooling chamber is arranged in the cylinder head cover, and the water cooling chamber is communicated with a water source for cooling circulation through a pump body; the outside is also provided with a housing which extends from the cooling fan to the cylinder head cover and forms a diversion space with the outer wall of the cylinder body. The utility model simultaneously arranges a cooling fan and a cooling medium outside the cylinder body, guides heat dissipation through the diversion space, and realizes forced air cooling and water cooling.
Description
Technical Field
The utility model relates to a two-stroke internal combustion engine of a portable fire pump, in particular to an internal combustion engine cooling technology, and specifically relates to a wind-water double-cooling two-stroke internal combustion engine capable of realizing forced air cooling and water cooling and a portable fire pump.
Background
Two-stroke internal combustion engines used in existing conventional, portable fire pumps typically employ a single cooling mode. The single forced air cooling two-stroke internal combustion engine has the advantages of high reliability, low requirements on the environment temperature and the fluid medium of the water pump, and the like, but has higher working temperature, so that the combustion efficiency is reduced; and the requirements on lubricating oil are strict, and mixed oil of FD-level 2T engine oil and gasoline is needed. Once the specification of the engine oil is used incorrectly on the fire scene, the engine is easy to pull the cylinder, so that the fire pump cannot be used, and further the fire fighting is affected.
In a single water-cooled two-stroke internal combustion engine, although the combustion effect can be improved and the fault tolerance of equipment to the engine oil level can be improved by reducing the working temperature, the internal circulation type cooling is adopted, and a water tank, a condenser, a fan special for the condenser and the like are required to be arranged, so that the two-stroke internal combustion engine is large in size and complex in structure, does not accord with the characteristics of portability and simplicity of the two-stroke internal combustion engine for a portable fire pump, and is difficult to apply to a fire extinguishing site.
The two-stroke internal combustion engine adopting the external circulation mode generally adopts field water resources as cooling medium in the fire protection field, and the freezing blockage of a cooling water pipeline is easy to occur when the two-stroke internal combustion engine is used under the environment condition that the air temperature is lower than zero, or the cooling water pipeline is blocked due to the problems of water quality scaling, impurities and the like, and the condition that equipment cannot be used or the engine is damaged is caused by the lack of the circulation cooling of the cooling water, so that the fire fighting operation efficiency is seriously influenced.
Disclosure of Invention
The utility model aims to solve the existing problems, and aims to provide a wind-water double-cooling two-stroke internal combustion engine and a portable fire pump so as to solve the problems that a single forced air cooling two-stroke internal combustion engine is high in use working temperature and low in combustion efficiency, and the single water cooling two-stroke internal combustion engine is high in requirement on use environment.
In order to achieve the purpose, the technical scheme adopted by the utility model comprises a cylinder body and a crankshaft, wherein the crankshaft extends out from the cylinder body from inside to outside to form an outer end part, and a cooling fan is arranged on the outer end part; the outer wall of the cylinder body is also provided with a cylinder head cover, a water cooling chamber is arranged in the cylinder head cover, and the water cooling chamber is communicated with a water source for cooling circulation through a pump body; the outside is also provided with a housing which extends from the cooling fan to the cylinder head cover and forms a diversion space with the outer wall of the cylinder body; and a heat radiation port forming a diversion space with the outer wall of the cylinder head cover.
One end of the cylinder body is provided with a cylinder cover for sealing the combustion chamber; the lower end face of the cylinder head cover is opened, and the outer wall of the cylinder head and the inner cavity of the cylinder head cover form a water cooling cavity.
Wherein, the splice department of cylinder head and cylinder head cover is equipped with the sealing washer.
The cylinder head cover is provided with a water inlet and a water outlet, and the water inlet and the water outlet are respectively connected with a high-pressure water intake and a low-pressure water return port which are correspondingly arranged on the pump body through a high-pressure pipeline and a low-pressure pipeline.
Wherein, the top surface or the side of the cylinder head cover is provided with a guide fin.
Wherein, the inside of cylinder head cover is equipped with the water route deflector.
The crankshaft is arranged at the other end of the cylinder body, and air flow blown out by the cooling fan takes away heat of the cylinder body and the outer wall of the cylinder head cover under the guidance of the diversion space and is discharged from the cooling port.
Wherein, be equipped with the air inlet that is used for a plurality of intakes on the housing.
Wherein, the outer wall of the cylinder body in the diversion space is provided with cooling fins.
Wherein, the outer wall of other parts of the cylinder body is also provided with cooling fins.
The side wall of the cylinder body also comprises an end cover, and a through hole is formed in the end cover; the crankshaft extends outwards from the through hole, and the end cover is in rotary connection with the crankshaft through a bearing.
Wherein, the cover body of the end cover facing the cylinder body is provided with a through air flow hole.
Wherein, the diversion space is internally provided with a temperature control switch which plays a role of high temperature protection.
The utility model also provides a portable fire pump which comprises any wind-water double-cooling two-stroke internal combustion engine.
Compared with the prior art, the utility model simultaneously arranges the cooling fan and the cooling medium outside the cylinder body, guides the heat dissipation through the diversion space, and realizes forced air cooling and water cooling double cooling; the heat supply of forced air cooling solves the problem that a cooling water pipeline of a single water-cooled engine is frozen and blocked under the low-temperature working condition, and even when the cooling water pipeline of the single water-cooled engine is blocked due to the problems of water quality scaling, impurities and the like, the safe operation of the fire pump can be ensured by singly using the forced air cooling; the water cooling operation can improve the combustion effect and use the lubricating oil margin, so that the problem that the engine cylinder is damaged due to the fact that the engine oil specification is used incorrectly frequently occurs in a fire scene is solved greatly.
The utility model not only has the advantages of high reliability and high weather resistance of the forced air-cooled two-stroke internal combustion engine, but also has the advantages of low working temperature, high efficiency and strong fault tolerance to lubricating oil of the water-cooled two-stroke internal combustion engine, and solves the long-term industrial problems faced by fire-fighting forces when using the fire-fighting pump using the two-stroke internal combustion engine as power.
Drawings
FIG. 1a is a cross-sectional view of an embodiment of the present utility model;
FIGS. 1b and 2a are schematic views of the structure of the present utility model;
FIG. 2b is a schematic diagram of the water cooling cycle;
FIG. 3a is a schematic view of the structure of a cylinder head cover;
FIG. 3b is a schematic view of the structure of the cylinder head cover;
FIG. 4 is a schematic view of the structure of the cylinder head;
referring to the drawings, a radiator fan 1, a crankshaft 2, an end cover 3, a temperature control switch 4, a fan cover 5, a fin heat shield 6, a cylinder head cover 7, a cylinder head 8, a cylinder block 9, a seal ring 10, a pump body 11, a high-pressure pipeline 12 and a low-pressure pipeline 13.
Detailed Description
The utility model will now be further described with reference to the accompanying drawings. The shape, structure, mutual position and connection relation among all parts, function and working principle of all parts, operation and use method and the like of all the components are described in further detail so as to help those skilled in the art to understand the inventive concept, technical scheme more completely, accurately and deeply.
Referring to fig. 1a to 2a, fig. 1a to 2a show an embodiment of the present utility model, a wind-water double-cooling two-stroke internal combustion engine capable of realizing forced air cooling and selective water cooling simultaneously, comprising a cylinder block 9, wherein a crankshaft 2 is arranged inside the cylinder block 9. The crankshaft 2 extends from the cylinder block 9 from the inside to the outside to form an outer end portion, and the outer end portion is provided with a radiator fan 1. When the two-stroke internal combustion engine works, the crankshaft 2 rotates, and then the cooling fan 1 is driven to rotate, so that forced air cooling is realized.
Referring to fig. 1a, the outer wall of the cylinder block 9 is also provided with a cylinder head cover 7. The upper end of the cylinder block 9 is provided with a cylinder head 8 for closing the combustion chamber; the cylinder head cover 7 has a cavity therein, and the lower end surface of the cylinder head cover 7 is opened, and the upper wall of the cylinder head 8 and the cavity of the cylinder head cover 7 constitute a water cooling chamber. The water-cooled chamber is connected to a water source for the cooling cycle through the pump body 11.
Referring to fig. 1a, a cover is further provided on the outside of the cylinder block 9, and includes a fan cover 5 and a fin heat shield 6 connected to each other. The fan cover 5 in the housing is provided from the radiator fan 1, wraps the radiator fan 1 from the lower end of the cylinder block 9, and then extends upward along the outside of the cylinder block 9 toward the cylinder head cover 7; a fin heat shield 6 is connected above the cylinder head cover 7. The space between the fan cover 5, the heat-radiating fin heat-insulating cover 6 and the outer wall of the cylinder block 9 is the diversion space. Further, the end of the fin heat shield 6 forms a heat radiation opening of a diversion space with the outer wall of the cylinder head cover 7 for heat dissipation.
Based on the above design, when the internal combustion engine is in operation, the forced air-cooled air flow generated by the cooling fan 1 in the forced air-cooled system can blow heat of the cylinder block 9 and the outer wall (cooling fins, guide fins) of the cylinder head cover 7 to the cooling ports (the air flow direction is the line shown in fig. 1 a) through the guide space and discharge the heat, thereby cooling the cylinder block 9 and the cylinder head cover 7 in turn.
Preferably, a plurality of cooling fins are cast on the outer wall of the cylinder body 9, so that the cooling surface area is increased, and forced air cooling is facilitated. Referring to fig. 3b, a plurality of heat dissipation fins are preferably arranged on the outer wall of the cylinder head cover 7, so that heat generated by a combustion chamber below the cylinder head 8 can be effectively transferred to the heat dissipation fins of the cylinder head cover 7 to dissipate heat, and heat dissipation efficiency is accelerated.
Preferably, an air inlet for a plurality of air inlets is also arranged on the housing at the position of the cooling fan 1.
Preferably, the joint between the cylinder head cover 7 and the cylinder head 8 is sealed by a sealing ring 9, so that the cylinder head cover 7 and the cylinder head 8 can be ensured to be in direct contact, and the heat conduction efficiency is improved.
The side wall of the cylinder body 9 also comprises an end cover 3, and a through hole is arranged on the end cover 3; the crankshaft 2 extends outwards from the through hole, and the end cover 3 is in rotary connection with the crankshaft 2 through a plurality of bearings. In order to further improve the forced air cooling heat dissipation efficiency, the end cover 3 and the cylinder block 9 have an overlapping portion due to the splicing. The cover body of the rewriting part facing the cylinder block 9 is provided with a through air flow hole, and the air flow hole can directly radiate heat to the cylinder block 9.
Through the mode, the independent forced air cooling heat dissipation can also meet the full-power use requirement under the condition of using high-quality engine oil, so that the problem that equipment is pulled to a cylinder due to insufficient cooling after a pipeline is blocked under the water cooling external circulation is effectively solved.
During the operation of the forced air cooling system, if the cooling water circulation in the water cooling chamber is opened, a part of heat can be taken away.
Referring to fig. 2a, 2b and 4, in the water cooling system, the cooling water is sourced from a system consisting of a pump body 11, a high-pressure pipeline 12 and a low-pressure pipeline 13. The cooling water is taken from the high-pressure end of the pump body 11 of the fire pump and enters the water cooling cavity formed by the cylinder head cover 7 and the cylinder head 8 through the high-pressure pipeline 12.
Referring to fig. 3a, a water flow guide plate is further provided in the water cooling chamber, so that high pressure water can sufficiently circulate in the chamber, absorb sufficient heat and then flow to the low pressure pipeline 13, and flow back to the low pressure region of the pump body 11 through the low pressure pipeline 13. The water sources of the water pump are all from rivers, lakes, fire hydrants and the like, and the water is continuously output through the water pump, so that the cooling water of the water cooling system of the engine is ensured to be cooled without additional cooling.
In the above embodiment, the cooling fan 1 mounted on the crankshaft 2 is used for making the air in the space formed by the cooling fin heat-insulating cover 6, the fan cover 5 and the end cover 3 flow through the guide fins of the cylinder block 9 and the cylinder cover 7, and the cooling water flows in the cylinder cover 7 to take away heat. The two sets of cooling systems act on the engine at the same time, so that the heat of the engine can be taken away to a greater extent, the engine has better cooling effect than the traditional forced air cooling two-stroke internal combustion engine, and the working temperature of the internal combustion engine is reduced, thereby improving the power of the internal combustion engine under the condition of high load and the margin for using lubricating oil.
When the external circulation water cooling system cannot participate in cooling, the cooling fan 1 can still play a role in cooling the internal combustion engine, so that the engine can normally run, the use requirement is met, and the fault tolerance of the fire pump and the capability of coping with complex situations are greatly improved.
Further, a temperature control switch 4 is arranged on the outer wall of the cylinder head cover 7, and the temperature control switch 4 is connected with a controller. Only when the forced air cooling and the water cooling are completely failed, the temperature exceeds the normal working temperature of the internal combustion engine, and the internal combustion engine can be stopped to be protected.
The utility model also provides a portable fire pump which comprises any wind-water double-cooling two-stroke internal combustion engine, and the working principle and the technical effect of the portable fire pump are the same as those of the embodiment, so that the portable fire pump is not repeated.
The embodiments of the present utility model have been described above with reference to the accompanying drawings and examples, which are not to be construed as limiting the utility model, but rather as modifications, variations or adaptations thereof may be made by those skilled in the art within the scope of the appended claims.
Claims (9)
1. The utility model provides a two stroke internal-combustion engine of geomantic omen double cooling, includes cylinder block, bent axle, its characterized in that: the crankshaft extends out from the cylinder body from inside to outside to form an outer end part, and a cooling fan is arranged on the outer end part;
the outer wall of the cylinder body is also provided with a cylinder cover, a water cooling cavity is arranged in the cylinder cover, the water cooling cavity is provided with a water inlet and a water outlet, and a cooling circulating water source is respectively connected with a high-pressure water intake and a low-pressure water return port of the pump body through a high-pressure pipeline and a low-pressure pipeline;
the outside is also provided with a housing which extends from the cooling fan to the cylinder head cover, forms a diversion space with the outer wall of the cylinder block and forms a cooling port of the diversion space with the outer wall of the cylinder head cover; and under the guidance of the diversion space, the air flow blown out by the cooling fan takes away the heat of the cylinder body and the outer wall of the cylinder head cover and is discharged from the cooling port.
2. The geomantic omen double cooling two-stroke internal combustion engine according to claim 1, wherein: one end of the cylinder body is provided with a cylinder cover for sealing the combustion chamber; the lower end face of the cylinder head cover is opened, and the outer wall of the cylinder head and the inner cavity of the cylinder head cover form a water cooling cavity; and/or a sealing ring is arranged at the joint of the cylinder cover and the cylinder cover.
3. A geomantic omen double cooling two-stroke internal combustion engine according to claim 1 or 2, wherein: the top surface or the side surface of the cylinder head cover is provided with guide fins.
4. A geomantic omen double cooling two-stroke internal combustion engine according to claim 1 or 2, wherein: the inside of the cylinder head cover is provided with a waterway guide plate.
5. The geomantic omen double cooling two-stroke internal combustion engine according to claim 1, wherein: the housing is provided with a plurality of air inlets for air intake.
6. A geomantic omen double cooling two-stroke internal combustion engine according to claim 1 or 5, wherein: the outer wall of the cylinder body positioned in the diversion space is provided with cooling fins; and/or the outer wall of other parts of the cylinder body is also provided with cooling fins.
7. A geomantic omen double cooling two-stroke internal combustion engine according to claim 1 or 5, wherein: the side wall of the cylinder body also comprises an end cover, and a through hole is arranged on the end cover; the crankshaft extends outwards from the through hole, and the end cover is in rotary connection with the crankshaft through a bearing; and/or the cover body of the end cover facing the cylinder body is provided with a through air flow hole.
8. The geomantic omen double cooling two-stroke internal combustion engine according to claim 1, wherein: a temperature control switch is arranged in the diversion space.
9. A portable fire pump, characterized in that: a wind-water double-cooled two-stroke internal combustion engine comprising any of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322018930.7U CN220434876U (en) | 2023-07-28 | 2023-07-28 | Wind-water double-cooling two-stroke internal combustion engine and portable fire pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322018930.7U CN220434876U (en) | 2023-07-28 | 2023-07-28 | Wind-water double-cooling two-stroke internal combustion engine and portable fire pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220434876U true CN220434876U (en) | 2024-02-02 |
Family
ID=89686428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322018930.7U Active CN220434876U (en) | 2023-07-28 | 2023-07-28 | Wind-water double-cooling two-stroke internal combustion engine and portable fire pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220434876U (en) |
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2023
- 2023-07-28 CN CN202322018930.7U patent/CN220434876U/en active Active
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