CN112709626A - Forced air cooling engine cooling system - Google Patents
Forced air cooling engine cooling system Download PDFInfo
- Publication number
- CN112709626A CN112709626A CN202110022057.1A CN202110022057A CN112709626A CN 112709626 A CN112709626 A CN 112709626A CN 202110022057 A CN202110022057 A CN 202110022057A CN 112709626 A CN112709626 A CN 112709626A
- Authority
- CN
- China
- Prior art keywords
- engine
- air
- cooling
- forced air
- heat dissipation
- 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.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P5/06—Guiding or ducting air to, or from, ducted fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
- F04D19/005—Axial flow fans reversible fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a forced air cooling engine heat dissipation system, which comprises an engine, wherein an air guide cover is wrapped on the outer side of the engine, a sealed channel is formed between the air guide cover and the engine, a cooling fan is installed on one side of the air guide cover, an air inlet or an air outlet is formed in the other side of the air guide cover, the flow speed of air flow generated by the operation of the cooling fan is increased when the air flow passes through the sealed channel between the air guide cover and the engine, and heat generated by the operation of the engine is continuously taken away to cool the engine. The forced air-cooled heat dissipation system is additionally arranged on the basis of the original air-cooled small engine under the condition of not changing the design of the original engine, so that a quick and effective cooling mode of the engine can be provided, the problem of overheating of the engine caused by insufficient heat dissipation when the existing air-cooled small engine runs without head-on blowing is solved, and the engine is ensured to run in a normal working temperature range all the time.
Description
Technical Field
The invention relates to a heat dissipation system, in particular to a heat dissipation system of a forced air cooling engine.
Background
With the continuous strong national defense force in China, the small piston engine is gradually applied to an aerial unmanned aerial vehicle and a ground unmanned vehicle. In order to reduce the weight of the whole system, the small piston engine mostly adopts an air cooling system, and the heat is radiated by integral radiating fins on a cylinder head and a cylinder body.
When the air-cooled small engine is applied to a fixed-wing unmanned aerial vehicle and a motorcycle, when the forward head-on air blower can meet the heat dissipation requirement of the engine, a heat dissipation system does not need to be additionally added, and the engine can be used by depending on the heat dissipation fins of the engine.
When the air-cooled small engine is applied to a rotor unmanned aerial vehicle, no head-on air is blown in a hovering state; when the engine is applied to a fully-enclosed vehicle, the engine is wrapped inside a vehicle body covering part, and head-on air blowing cannot effectively reach the surface of the engine during running. In these cases, if the engine has no extra cooling system to dissipate heat by means of the cooling fins, and the air quantity with corresponding wind speed carries away the heat generated by the combustion of the engine, the engine can be overheated to cause a series of failures, and even the engine is stopped due to the failure of parts.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a forced air cooling engine heat dissipation system, which solves the problem of engine overheating caused by insufficient heat dissipation when the existing air cooling type small engine runs without head-on air blowing.
The technical scheme is as follows: the engine comprises an engine, wherein the outer side of the engine is wrapped with an air guide cover, a sealed channel is formed between the air guide cover and the engine, one side of the air guide cover is provided with a cooling fan, the other side of the air guide cover is provided with an air inlet or an air outlet, the flow speed of air flow generated by the operation of the cooling fan is increased when the air flow passes through the sealed channel between the air guide cover and the engine, and heat generated by the operation of the engine is continuously taken away to cool the engine.
The sealing channel between the air guide cover and the engine is 1-10 mm.
The wind scooper is made of carbon fiber materials, the thickness of the wind scooper is 0.3-3 mm, the wind scooper can resist temperature of more than 200 ℃, and the wind scooper is light in weight, high in strength and good in temperature resistance.
The cooling fan adopts an axial flow type cooling fan, the temperature of the engine is controlled along with the rotating speed, and the engine is ensured to always run at the optimal working temperature.
The axial flow type cooling fan can rotate forwards or reversely to realize two working modes of air draft or air blowing under different conditions.
The axial flow type cooling fan adopts an integrated or split structure.
The wind scooper is wrapped on the engine through the sealant and the second assembly.
The top of the wind scooper is fastened on the engine through the first assembly.
The cooling fan is assembled on the wind guide cover through a third assembly.
Has the advantages that: the forced air-cooled heat dissipation system is additionally arranged on the basis of the original air-cooled small engine under the condition of not changing the design of the original engine, so that a quick and effective cooling mode of the engine can be provided, the problem of overheating of the engine caused by insufficient heat dissipation when the existing air-cooled small engine runs without head-on blowing is solved, and the engine is ensured to run in a normal working temperature range all the time.
Drawings
FIG. 1 is a first schematic view of an integrated fan according to the present invention;
FIG. 2 is a second schematic view of an integrated fan according to the present invention;
FIG. 3 is a first schematic view of a split fan according to the present invention;
fig. 4 is a schematic view of a split fan according to the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 to 4, the aircraft engine comprises an engine 1, an air guide cover 2 wraps the outer side of the engine 1, the air guide cover 2 is divided into two parts and assembled on the engine 1 through a second assembly 5 (a bolt, a nut and a gasket assembly) and special aviation sealant, and the top of the air guide cover 2 is fastened on the engine through a first assembly 4 (a bolt, a nut and a gasket assembly). The whole engine is wrapped by the air guide cover 2, a narrow sealed channel is formed between the air guide cover 2 and the engine 1, the channel interval is 1-10 mm, the flow speed of cooling air is guaranteed by utilizing a slit effect, and heat of the engine 1 is rapidly taken out to achieve the purpose of heat dissipation. The wind scooper 2 is made of a 0.3-3 mm carbon fiber material, can resist temperature of more than 200 ℃, and is light in weight, high in strength and good in temperature resistance. The whole shape adopts a streamline design, keeps consistent with the shape of the engine 1, controls the gap balance at each position of the engine 1, ensures the gas flow velocity, and takes away the combustion heat of the engine 1.
Axial flow type cooling fans 3 are symmetrically installed on one side of the air guide cover 2, the axial flow type cooling fans 3 are tightly assembled on the air guide cover 2 through a third assembly 6 (a bolt, a nut and a gasket assembly), and the other side of the air guide cover 2 is a free opening, namely an air inlet or an air outlet. Air inlet/outlet ports are respectively designed above the cylinder head and the cylinder body along the direction of the radiating fins, and air blowing type cooling or air draft type cooling can be selectively designed according to the advancing direction of an unmanned aerial vehicle or a vehicle and the installation mode of the engine 1. The wind scooper 2 is provided with a fan mounting seat and a wind inlet/outlet at each cylinder head, so that one cylinder head can be cooled by one fan.
The axial-flow type cooling fan 3 adopts a high-power high-rotating-speed industrial cooling fan, the speed is regulated through pulse width modulation, the rotating speed of the fan is controlled according to the temperature of a cylinder body or the rotating speed of the engine 1, the temperature of the engine 1 is ensured not to be too low when the engine operates at a low speed, and the temperature of the engine 1 is ensured not to be too high when the engine operates at a high speed, so that the temperature is always kept in a reasonable range when the engine 1 operates. According to the installation of engine 1 and the advancing direction of unmanned aerial vehicle/vehicle, the fan can select and just adorn or turn over the dress to realize convulsions or two kinds of working methods of blowing under the different situations.
The axial flow type cooling fan 3 of the present invention is designed with two mounting structures of an integrated fan and a split type fan. As shown in fig. 1 and 2, the fan in the integrated fan has no external fixed cover and is directly fixed on the wind scooper 2, so that the weight of the system is greatly reduced; as shown in fig. 3 and 4, the split fan has an external fixed cover, and is fixed with the wind scooper 2 through bolts, so that the requirements of positive and negative assembly can be met, and meanwhile, the fans with different air volumes can be flexibly switched.
When the working temperature of the engine 1 rises, the axial flow type cooling fan 3 starts to work and adjusts different wind speeds of the engine 1 under different working conditions through pulse width modulation, the flow speed of air flow generated by the operation of the axial flow type cooling fan 3 is increased when the air flow passes through a sealing channel between the air guide cover 2 and the engine 1, heat generated by the operation of the engine 1 is continuously taken away, the engine 1 is cooled, and the engine 1 is ensured to operate at the correct working temperature all the time.
Claims (9)
1. The utility model provides a force forced air cooling engine cooling system, includes engine (1), its characterized in that, the outside parcel of engine (1) has wind scooper (2), wind scooper (2) and engine (1) between form sealed passageway, cooling fan is installed to one side of wind scooper (2), the opposite side is air intake or air outlet, the velocity of flow increases when the air current that cooling fan work produced passes through the sealed passageway between wind scooper (2) and engine (1), constantly takes away the heat that engine (1) during operation produced, cools off engine (1).
2. The cooling system of the forced air cooling engine according to claim 1, wherein the sealing channel between the wind scooper (2) and the engine (1) is 1-10 mm.
3. The cooling system of the forced air cooling engine according to claim 1 or 2, wherein the wind scooper (2) is made of carbon fiber material, and the thickness of the carbon fiber material is 0.3-3 mm.
4. A forced air cooling engine heat dissipation system as defined in claim 1, wherein the cooling fan is an axial flow cooling fan (3).
5. A forced air cooling engine heat dissipation system as defined in claim 4, wherein the axial flow cooling fan (3) is capable of forward or reverse rotation.
6. A forced air cooling engine heat dissipation system as defined in claim 4 or 5, wherein the axial flow cooling fan (3) is of an integrated or split structure.
7. The heat dissipation system of a forced air cooling engine according to claim 1, wherein the wind scooper (2) is wrapped on the engine (1) by a sealant and a second assembly (5).
8. The system for dissipating heat from a forced air-cooled engine according to claim 1 or 7, characterized in that the top of the air guiding hood (2) is fastened to the engine (1) by means of a first assembly (4).
9. A forced air cooling engine heat dissipation system according to claim 1, wherein the cooling fan is mounted to the wind scooper (2) by a third assembly (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110022057.1A CN112709626A (en) | 2021-01-08 | 2021-01-08 | Forced air cooling engine cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110022057.1A CN112709626A (en) | 2021-01-08 | 2021-01-08 | Forced air cooling engine cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112709626A true CN112709626A (en) | 2021-04-27 |
Family
ID=75548581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110022057.1A Pending CN112709626A (en) | 2021-01-08 | 2021-01-08 | Forced air cooling engine cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112709626A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855327A (en) * | 2021-02-05 | 2021-05-28 | 南京航空航天大学 | Air-cooled drainage device of small-sized aero-engine |
-
2021
- 2021-01-08 CN CN202110022057.1A patent/CN112709626A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855327A (en) * | 2021-02-05 | 2021-05-28 | 南京航空航天大学 | Air-cooled drainage device of small-sized aero-engine |
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Effective date of registration: 20221024 Address after: No. 216, Longpan Middle Road, Qinhuai District, Nanjing, Jiangsu 210,008 Applicant after: AVIC Jincheng Unmanned System Co.,Ltd. Address before: 518 Ruize Road, industrial zone, Hushu Town, Jiangning District, Nanjing City, Jiangsu Province, 211121 Applicant before: Nanjing Jincheng Machinery Co.,Ltd. |