CN102128075A - Cooling device of air cooled engine - Google Patents
Cooling device of air cooled engine Download PDFInfo
- Publication number
- CN102128075A CN102128075A CN 201110005184 CN201110005184A CN102128075A CN 102128075 A CN102128075 A CN 102128075A CN 201110005184 CN201110005184 CN 201110005184 CN 201110005184 A CN201110005184 A CN 201110005184A CN 102128075 A CN102128075 A CN 102128075A
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- heat pipe
- engine
- loop circuit
- heat
- drain pan
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- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a cooling device of an air cooled engine. The cooling device is characterized in that a heat pipe or a loop heat pipe is adopted to transmit the heat at the interior of the engine to the exterior of the engine, and the heat is diffused to the surrounding environment; the evaporation section of the heat pipe or a loop heat pipe evaporator is inserted in the interior of the engine through an opening on an engine oil bottom shell and is immersed in the cooling engine oil positioned in the engine oil bottom shell, or the evaporation section of the heat pipe or the loop heat pipe evaporator is directly installed on the outer wall surface of the engine oil bottom shell, or the evaporation section of the heat pipe or the loop heat pipe evaporator is directly combined in the wall surface of the engine oil bottom shell and is integrated with the engine oil bottom shell; and the characteristics of less heat-transfer temperature difference, large heat dissipation energy and flexibility in arrangement of heat dissipation surface of the heat pipe or loop heat pipe are utilized, thus the improvement of the heat dissipation intensity is realized, and the temperatures of the piston of the engine and a machine body are lowered.
Description
One, technical field
The invention belongs to the heat transfer technology field, a kind of device that particularly utilizes heat pipe that air cooling engine is cooled off.
Two, background technique
Motor has a large amount of parts such as heat transferred piston in the process of work, therefore need take certain measure that this part heat is distributed in time, otherwise consequent high temperature will have influence on the reliability of motor.The type of cooling of motor is divided into water-cooled and air-cooled two kinds.In view of have compact structure, the cooling channel is simple, reliability is high, to advantage such as the adaptive capacity of geographical natural environment and climate environment is strong, blower cooled engine is widely used in the mini engine.But the blower cooled engine development so far, still exists some technical barriers and be not well solved.For example, when the blower cooled engine load increased, the heat load that piston bears sharply increased, and made that the oil temperature rise was very fast when machine oil splashed cooling, had influenced the normal working performance of motor.Too high for preventing oil temperature, needs strengthen the intensity of cooling of machine oil.Generally, the machine oil utilization of blower cooled engine is positioned near the oil radiator the cooling fan or the fin that is distributed on the body dispels the heat, when engine heat load increases, when particularly under the high load operating mode, moving for a long time, machine oil intensity of cooling deficiency, heat dissipating capacity does not reach requirement, makes engine temperature rise to some extent, and performance reduces; Especially for the situation that adopts the heat radiation of body fin, the area of body outer wall is limited on the one hand, limited the heat diffusion area of fin, on the other hand, because fin normally is cast as one with body wall, the existence of fin has strengthened the complexity of body casting, makes shape, quantity and the mounting point of fin be subjected to very big restriction, therefore adopts conventional art that air cooling engine is cooled off and has certain narrow limitation.
Three, summary of the invention
The present invention is by installing heat pipe additional at engine interior or motor wall, constitute a kind of oil pan heat pipe additional cooler structure, utilize adopting heat pipes for heat transfer to have a narrow range of temperature, heat output is big, the characteristics of heat dispersing surface flexible arrangement are transmitted out from engine interior with heat, and distribute to environment on every side by additional cooler, thereby the enhancing engine radiating, the performance of raising motor.
A kind of cooling device for blower cooled engine of the present invention, comprise air cooling engine, oil pan and heat pipe, one end of described heat pipe inserts engine interior and buries by the perforate on the engine motor oil drain pan and is immersed in the cooling machine oil that is arranged in the oil pan, also an end of heat pipe can be directly installed on the outer wall of engine motor oil drain pan, perhaps the end with heat pipe directly is combined in the wall of engine motor oil drain pan, constitutes one with the engine motor oil drain pan; The other end of heat pipe is positioned at external engine, on this section heat pipe fin is housed.Described heat pipe also can adopt loop circuit heat pipe to replace, the vaporizer of loop circuit heat pipe is installed in the drain pan of engine cooling machine oil, also the vaporizer of loop circuit heat pipe can be directly installed on the outer wall of engine motor oil drain pan, perhaps the vaporizer with loop circuit heat pipe directly is combined in the wall of engine motor oil drain pan, the gas piping of loop circuit heat pipe is connected with the loop circuit heat pipe condenser that is positioned at external engine with the loop circuit heat pipe vaporizer respectively with liquid line, constitutes the loop circuit heat pipe loop.
In the oil pan of motor bottom or on the wall of motor bottom oil pan heat pipe is being installed, machine oil is with the evaporator section of heat transferred heat pipe, the liquid working media of the evaporator section carburation by evaporation that is heated, the steam that produces flows to the condensation end that is positioned at outside the motor under certain pressure reduction, and emit heat at condensation end, again be condensed into liquid and be back to vaporizing end, thus the circulation of formation working medium.In above working procedure, the heat of engine interior is delivered to the outside of motor by heat pipe and distributes to surrounding environment, realizes the purpose that oil temperature is reduced.This technological scheme also can adopt loop circuit heat pipe that motor is dispelled the heat, in this scheme, the machine oil that is positioned in the oil pan of motor bottom is installed in the oil pan of motor bottom heat transferred or the loop circuit heat pipe vaporizer on the oil pan wall of motor bottom, heat is delivered to imbibition core in the vaporizer by loop circuit heat pipe vaporizer tube wall, the liquid refrigerant of the imbibition in-core carburation by evaporation that is heated, the steam that produces enters vapor chamber by the stream passageway of imbibition core, then in certain pressure difference effect current downflow to the condenser that is positioned at external engine; Steam is emitted heat in condenser, be condensed into liquid again, and Ye Tai working medium is back to the vaporizer of loop circuit heat pipe at the effect lower edge of pressure reduction and capillary force fluid circuit then, thereby forms the circulation of working medium.In above working procedure, the heat of engine interior is delivered to the outside of motor by loop circuit heat pipe and distributes to surrounding environment, realizes the purpose that oil temperature is reduced.The heat radiation of employing loop circuit heat pipe, capillary core only is present in vaporizing end, and stream passageway and fluid passage separately so heat output is big, and have certain bob-weight amount height, make that the layout of vaporizer and condenser is more flexible.
The invention has the beneficial effects as follows: utilize heat pipe or loop circuit heat pipe that the inner heat transfer that produces of air cooling engine is arrived external engine, make the heat diffusion area of motor arrange more flexible, improve the heat dissipation potential of air cooling engine piston and body, reduced the temperature of engine piston and body effectively.
The present invention is particularly suitable for the piston of air cooling engine and body are dispelled the heat.
Four, description of drawings
Fig. 1 adopts the structural representation of heat-pipe radiating apparatus for patent of the present invention.
Fig. 2 adopts the structural representation of loop circuit heat pipe sink for patent of the present invention.
Among the figure: 1 is machine oil, and 2 is fin, and 3 is heat pipe, and 4 is engine body, and 5 is oil pump, and 6 is the loop circuit heat pipe vaporizer, and 7 is gas piping, and 8 is loop circuit heat pipe condenser, and 9 is liquid line
Five, embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing:
Figure 1 shows that the embodiment who adopts heat pipe heat radiation, in this embodiment, the machine oil 1 that oil pump 5 will be positioned at engine interior is sprayed onto the motor top and comes cooling piston and motor is lubricated, machine oil after the intensification is positioned at heat transferred the evaporator section of the heat pipe 3 of engine motor oil drain pan, working medium in the evaporator section pipe carburation by evaporation that is heated, the steam that produces flows to the condensating section that is positioned at the heat pipe 3 outside the motor under certain pressure reduction, and by the fin 2 installed on the condensating section with heat distribute to around environment, again the working medium that is condensed into liquid capillary force and (or) be back to heat pipe evaporator section under the effect of gravity, thereby form the circulation of working medium.In above process, the environment around the heat that produces during engine operation is dispersed into by heat pipe, engine body 4 and piston have obtained cooling.
Figure 2 shows that the embodiment who adopts the loop circuit heat pipe heat radiation, in this embodiment, the machine oil 1 that oil pump 5 will be positioned at engine interior is sprayed onto the motor top and comes cooling piston and engine body, machine oil after the intensification is with heat transferred loop circuit heat pipe vaporizer 6, the imbibition core is installed in the vaporizer, the liquid refrigerant of the imbibition in-core carburation by evaporation that is heated, the steam that produces enters vapor chamber by the stream passageway of imbibition core, under certain pressure difference effect, flow to loop circuit heat pipe condenser 8 then through gas piping 7, fin 2 is installed on the condenser, steam is emitted heat by condenser, again be condensed into liquid, Ye Tai working medium is back to loop circuit heat pipe vaporizer 6 at the effect lower edge of pressure reduction and capillary force liquid line 9 then, thereby forms the circulation of working medium.In above process, the environment around the heat that produces during engine operation is dispersed into by loop circuit heat pipe, engine body 4 and piston have obtained cooling.
The described heat pipe of present embodiment can be a cooling-part independently, one end of heat pipe inserted engine interior and bury by the perforate on the engine motor oil drain pan be immersed in the cooling machine oil that is arranged in the oil pan, perhaps the end with heat pipe is directly installed on the outer wall of engine motor oil drain pan, also an end of heat pipe directly can be combined in the wall of engine motor oil drain pan, constitute one with the engine motor oil drain pan; The other end of heat pipe is positioned at external engine.When adopting loop circuit heat pipe to replace heat pipe, the vaporizer of loop circuit heat pipe is installed in the interior cooling machine oil of engine motor oil drain pan, perhaps the vaporizer with loop circuit heat pipe is directly installed on the outer wall of engine motor oil drain pan, also the vaporizer of loop circuit heat pipe directly can be combined in the wall of engine motor oil drain pan, utilize the working medium transfer conduit of loop circuit heat pipe that loop circuit heat pipe vaporizer and the loop circuit heat pipe condensation chamber that is positioned at external engine are coupled together, constitute complete loop circuit heat pipe work loop.
The inside and outside shape of heat pipe cross section provided by the invention is not limited to circle, also can be ellipse, quadrilateral or polygonal, and its inner tube wall can be smooth tube wall, also can be to be carved with conduit, or with the netted or porous material that increases capillary force; The outer wall of heat pipe can be smooth tube wall or fin is housed.The evaporator section of heat pipe or the vaporizer of loop circuit heat pipe can be tubular types or flat, and its profile can be quadrilateral, also can be circular, ellipse or polygonal that its outer wall can be a hydraulically smooth surface, also fin can be installed.Motor can adopt single heat pipe or loop circuit heat pipe to cool off, and also can adopt a plurality of heat pipes or loop circuit heat pipe to cool off.
Claims (2)
1. cooling device for blower cooled engine, comprise air cooling engine, oil pan and heat pipe, an end that it is characterized in that described heat pipe inserts engine interior and buries by the perforate on the engine motor oil drain pan and is immersed in the cooling machine oil that is arranged in the oil pan, also an end of heat pipe can be directly installed on the outer wall of engine motor oil drain pan, perhaps the end with heat pipe directly is combined in the wall of engine motor oil drain pan, constitutes one with the engine motor oil drain pan; The other end of heat pipe is positioned at external engine, on this section heat pipe fin is housed.
2. cooling device for blower cooled engine according to claim 1, it is characterized in that: described heat pipe also can adopt loop circuit heat pipe to replace, the vaporizer of loop circuit heat pipe is installed in the drain pan of engine cooling machine oil, also the vaporizer of loop circuit heat pipe can be directly installed on the outer wall of engine motor oil drain pan, perhaps the vaporizer with loop circuit heat pipe directly is combined in the wall of engine motor oil drain pan, the gas piping of loop circuit heat pipe is connected with the loop circuit heat pipe condenser that is positioned at external engine with the loop circuit heat pipe vaporizer respectively with liquid line, constitutes the loop circuit heat pipe loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110005184 CN102128075A (en) | 2011-01-12 | 2011-01-12 | Cooling device of air cooled engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110005184 CN102128075A (en) | 2011-01-12 | 2011-01-12 | Cooling device of air cooled engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102128075A true CN102128075A (en) | 2011-07-20 |
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ID=44266316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110005184 Pending CN102128075A (en) | 2011-01-12 | 2011-01-12 | Cooling device of air cooled engine |
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| Country | Link |
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| CN (1) | CN102128075A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590884A (en) * | 2012-08-13 | 2014-02-19 | 福特环球技术公司 | System with a heat pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2644681Y (en) * | 2003-08-19 | 2004-09-29 | 扬动股份有限公司 | Double-layer oil sump for internal combustion engine |
| CN1544801A (en) * | 2003-11-26 | 2004-11-10 | 君 何 | Heat pipe - oil - air cooling method and apparatus for motorcycle engine cooling |
| CN2825989Y (en) * | 2005-10-26 | 2006-10-11 | 胡世培 | Inlet air heater for internal combustion engine |
| CN101265896A (en) * | 2008-04-29 | 2008-09-17 | 华南理工大学 | Hot pipe -type freezer compressor lubricant oil cooling apparatus |
| CN201522221U (en) * | 2009-07-21 | 2010-07-07 | 史杰 | Loop heat pipe heat abstractor of high heat conduction temperature equalization box |
-
2011
- 2011-01-12 CN CN 201110005184 patent/CN102128075A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2644681Y (en) * | 2003-08-19 | 2004-09-29 | 扬动股份有限公司 | Double-layer oil sump for internal combustion engine |
| CN1544801A (en) * | 2003-11-26 | 2004-11-10 | 君 何 | Heat pipe - oil - air cooling method and apparatus for motorcycle engine cooling |
| CN2825989Y (en) * | 2005-10-26 | 2006-10-11 | 胡世培 | Inlet air heater for internal combustion engine |
| CN101265896A (en) * | 2008-04-29 | 2008-09-17 | 华南理工大学 | Hot pipe -type freezer compressor lubricant oil cooling apparatus |
| CN201522221U (en) * | 2009-07-21 | 2010-07-07 | 史杰 | Loop heat pipe heat abstractor of high heat conduction temperature equalization box |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590884A (en) * | 2012-08-13 | 2014-02-19 | 福特环球技术公司 | System with a heat pipe |
| CN103590884B (en) * | 2012-08-13 | 2017-09-19 | 福特环球技术公司 | system with heat pipe |
| DE102013215523B4 (en) | 2012-08-13 | 2023-05-04 | Ford Global Technologies, Llc | ENGINE SYSTEM WITH PISTON SPRAY LUBRICATION AND HEAT TUBE |
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Application publication date: 20110720 |