CN110805486A - Engine cooling system and method and excavator - Google Patents
Engine cooling system and method and excavator Download PDFInfo
- Publication number
- CN110805486A CN110805486A CN201911111068.6A CN201911111068A CN110805486A CN 110805486 A CN110805486 A CN 110805486A CN 201911111068 A CN201911111068 A CN 201911111068A CN 110805486 A CN110805486 A CN 110805486A
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- Prior art keywords
- engine cooling
- fan
- cooling system
- fan blades
- temperature
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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
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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
- F01P11/14—Indicating devices; Other safety devices
- F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
-
- 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
- F01P7/06—Controlling of coolant flow the coolant being cooling-air by varying blade pitch
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Component Parts Of Construction Machinery (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention provides an engine cooling system, an engine cooling method and an excavator, and relates to the technical field of engineering machinery, wherein the engine cooling system comprises a fan and a temperature detection mechanism; the temperature detection mechanism is used for detecting the temperature value of the engine cooling water; the fan comprises a fan body, fan blades and an angle adjusting mechanism, wherein the fan blades are rotatably connected with the fan body; the temperature detection mechanism is connected with the angle adjusting mechanism, and the angle adjusting mechanism drives the fan blades to rotate according to the temperature value of the engine cooling water detected by the temperature detection mechanism so as to adjust the air supply angle of the fan blades; when the temperature value of the engine cooling water exceeds the preset temperature value of the engine cooling water, the temperature detection mechanism sends a signal to the angle adjusting mechanism, the angle adjusting mechanism drives the fan blades to rotate according to the signal so as to change the air supply angle of the fan blades, so that the heat dissipation capacity of the engine cooling system is changed, the temperature of the engine cooling water is adjusted to the preset temperature value, and the engine runs at the preset temperature.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to an engine cooling system and method and an excavator.
Background
The engine is one of the important parts of the hydraulic excavator, and the cooling system is an important component of the engine and has the function of enabling the engine to operate in a proper temperature range, so that the whole excavator has excellent power performance, economic performance, emission performance and operation reliability.
When the excavator works in working environments such as open pit coal mines, quarries and the like, because the excavator is directly irradiated by sunlight in summer, no effective shielding object exists around the excavator, the surface temperature can reach about 45 ℃, the excavator works under the environment for a long time under heavy load, the heat generated by an engine easily exceeds the heat dissipation capacity of a cooling system, the water temperature of the engine is high, the performance of the whole hydraulic excavator is affected, and even the excavator cannot work due to the fact that the engine is boiling. In addition, in northern areas, the temperature is extremely low in winter, if the heat dissipation capacity of the radiator is increased, the engine is easily in a low-temperature running state in a long period when the temperature is low, the engine power is wasted, the fuel combustion condition is poor, the engine cannot work, and the content of hydrocarbons in tail gas is high. There is therefore a need for an engine cooling system with variable heat dissipation capability.
Disclosure of Invention
The invention aims to provide an engine cooling method and system and an excavator, and aims to solve the technical problems that in the prior art, the heat generated by an engine easily exceeds the heat dissipation capacity of a cooling system, so that the water temperature of the engine is high, the performance of the whole hydraulic excavator is influenced, even the engine cannot work due to the fact that the engine is boiling, and the engine is in a low-temperature running state when the heat dissipation capacity of the cooling system is larger than the heat generated by the engine, so that the power of the engine is wasted, and the fuel combustion condition is poor.
The invention provides an engine cooling system, which comprises a fan and a temperature detection mechanism;
the temperature detection mechanism is used for detecting the temperature value of the engine cooling water;
the fan comprises a fan body, fan blades and an angle adjusting mechanism, wherein the fan blades are rotatably connected with the fan body;
the temperature detection mechanism is connected with the angle adjusting mechanism, and the angle adjusting mechanism drives the fan blades to rotate according to the temperature value of the engine cooling water detected by the temperature detection mechanism so as to adjust the air supply angle of the fan blades.
Furthermore, angle adjustment mechanism includes the pivot, the one end of pivot with the flabellum is connected, the other end of pivot with fan body is articulated.
Further, the angle adjusting mechanism comprises a first driving mechanism, and the first driving mechanism is connected with the temperature detecting mechanism;
the first driving mechanism is arranged on the fan body and connected with the rotating shaft, and the first driving mechanism can drive the rotating shaft to rotate so as to enable the fan blades connected with the rotating shaft to rotate.
Further, the angle adjusting mechanism comprises a second driving mechanism, and the second driving mechanism is connected with the temperature detecting mechanism;
be provided with the pterygoid lamina in the pivot, second actuating mechanism's expansion end with the pterygoid lamina is connected, second actuating mechanism can promote the pterygoid lamina with the center of pivot rotates.
Further, the second driving mechanism is a linear driving mechanism.
Further, the second driving mechanism is an electric cylinder.
Furthermore, the quantity of flabellum is a plurality of, and is a plurality of the flabellum sets up at interval in proper order the circumference of fan body.
Further, the temperature detection mechanism is a temperature sensor.
An excavator comprises the engine cooling system.
An engine cooling method comprising the steps of:
acquiring a temperature value of engine cooling water;
and adjusting the air supply angle of the fan blades of the fan according to the temperature value of the cooling water of the engine.
The invention provides an engine cooling system, which comprises a fan and a temperature detection mechanism; the temperature detection mechanism is used for detecting the temperature value of the engine cooling water; the fan comprises a fan body, fan blades and an angle adjusting mechanism, wherein the fan blades are rotatably connected with the fan body; the temperature detection mechanism is connected with the angle adjusting mechanism, and the angle adjusting mechanism drives the fan blades to rotate according to the temperature value of the engine cooling water detected by the temperature detection mechanism so as to adjust the air supply angle of the fan blades. Because, the air supply angle of flabellum can be adjusted according to the temperature value of the engine cooling water that temperature detection mechanism detected to angle adjustment mechanism to can adjust the air supply angle according to the heat dissipation needs. For example, when the temperature control device is used, the temperature detection mechanism obtains the temperature value of the engine cooling water, when the temperature value exceeds the preset temperature value of the engine cooling water, the temperature detection mechanism sends a signal to the angle adjustment mechanism, the angle adjustment mechanism drives the fan blades to rotate to a larger air supply angle according to the signal, the air supply amount is increased through the change of the air supply angle, the heat dissipation capacity of an engine cooling system is improved, and the temperature of the engine cooling water is adjusted to the preset temperature value, so that the engine runs at the preset temperature.
An excavator comprising said engine cooling system, whereby the excavator also has the advantages of said engine cooling system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of an engine cooling system provided in embodiment 1 of the present invention;
fig. 2 is a plan view of a fan of an engine cooling system according to embodiment 1 of the present invention;
fig. 3 is a side view of a fan of an engine cooling system provided in embodiment 2 of the present invention;
fig. 4 is an enlarged view of a portion a in fig. 3.
Icon: 100-a fan; 110-a fan body; 120-fan blades; 130-a rotating shaft; 131-wing plate; 140-a first drive mechanism; 150-a second drive mechanism; 200-a temperature detection mechanism; 300-an engine; 400-a heat sink; 500-wind scooper.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1 and 2, the engine cooling system provided by the present invention includes a fan 100 and a temperature detection mechanism 200; the temperature detection means 200 is used to detect the temperature value of the engine cooling water.
Specifically, temperature detection mechanism 200 is a temperature sensor, may be provided on engine 300, and is capable of detecting the temperature of the engine cooling water.
The fan 100 comprises a fan body 110, fan blades 120 and an angle adjusting mechanism, wherein the fan blades 120 are rotatably connected with the fan body 110;
the temperature detection mechanism 200 is connected to an angle adjustment mechanism, and the angle adjustment mechanism drives the fan blades 120 to rotate according to the temperature value of the engine cooling water detected by the temperature detection mechanism 200, so as to adjust the air supply angle of the fan blades 120.
The engine cooling system further includes a radiator 400 and an air guide cover 500, and the air guide cover 500 is disposed between the radiator 400 and the fan 100.
In this embodiment, the fan 100 is a suction fan, and the cooling air passes through the radiator 400 and the wind scooper 500 in sequence under the action of the suction force of the fan, thereby reducing the temperature of the cooling water through the heat exchange action.
Specifically, the air supply angle of fan blade 120 is related to the air supply amount, and within the rotation range of fan blade 120, the larger the air supply amount of fan 100 is, the stronger the heat dissipation capability of the engine cooling system is, and the smaller the air supply amount of fan 100 is, the weaker the heat dissipation capability of the engine cooling system is, as the air supply angle is decreased.
Because of the angle adjustment mechanism can adjust the air supply angle of the fan blades 120 according to the temperature value of the engine cooling water detected by the temperature detection mechanism 200, the air supply angle can be adjusted according to the heat dissipation requirement. For example, when the temperature detection mechanism 200 is used, the temperature value of the engine cooling water is obtained, when the temperature value exceeds a preset temperature value of the engine cooling water, the temperature detection mechanism 200 sends a signal to the angle adjustment mechanism, the angle adjustment mechanism drives the fan blades 120 to rotate to a larger air supply angle according to the signal, the air supply amount is increased through the change of the air supply angle, the heat dissipation capacity of the engine cooling system is improved, and the temperature of the engine cooling water is adjusted to the preset temperature value, so that the engine 300 runs at the preset temperature.
It should be noted that, when the temperature value is smaller than the preset temperature value of the engine cooling water, the temperature detection mechanism 200 sends a signal to the angle adjustment mechanism, the angle adjustment mechanism drives the fan blades 120 to rotate to a smaller air supply angle according to the signal, the air supply amount is reduced by changing the air supply angle, and the heat dissipation capability of the engine cooling system can be reduced.
Preferably, the engine cooling system may further include a controller, the temperature detection mechanism 200 and the angle adjustment mechanism are respectively connected to the controller, the controller may receive temperature data of the temperature detection mechanism 200, compare the temperature data with a preset temperature value, and send a signal to the angle adjustment mechanism, and the angle adjustment mechanism may receive the signal from the controller to adjust the air supply angle of the fan blade 120.
The controller may be an ECU processor.
The angle adjusting mechanism includes a rotating shaft 130, one end of the rotating shaft 130 is connected to the fan blade 120, and the other end of the rotating shaft 130 is hinged to the fan body 110.
Preferably, the angle adjusting mechanism includes a first driving mechanism 140, and the first driving mechanism 140 is connected to the temperature detecting mechanism 200.
The first driving mechanism 140 is disposed on the fan body 110, the first driving mechanism 140 is connected to the rotating shaft 130, and the first driving mechanism 140 can drive the rotating shaft 130 to rotate, so as to rotate the fan blades 120 connected to the rotating shaft 130.
Specifically, the temperature detection mechanism 200 can detect the temperature value of the engine cooling water, and compare the temperature value with a preset temperature value of the engine cooling water, when the temperature value is greater than the preset temperature value, the temperature detection mechanism 200 sends a signal to the angle adjustment mechanism, and the first driving mechanism 140 drives the rotating shaft 130 to rotate according to the signal, so that the air supply angle of the fan blade 120 is increased, and the heat dissipation capacity of the fan 100 is improved.
When the temperature value is smaller than the preset temperature value, the temperature detection mechanism 200 sends a signal to the angle adjustment mechanism, and the first driving mechanism 140 drives the rotating shaft 130 to rotate reversely according to the signal, so that the air supply angle of the fan blades 120 is reduced, the heat dissipation capacity of the fan 100 is reduced, and finally, when the temperature of the engine cooling water reaches the preset temperature value, the adjustment is stopped.
The first driving mechanism 140 may be a driving motor, and an output end of the driving motor is connected to the rotating shaft 130 so as to drive the rotating shaft 130 to rotate.
Further, the number of the fan blades 120 is plural, and the plural fan blades 120 are sequentially arranged in the circumferential direction of the fan body 110 at intervals.
Specifically, the fan 100 includes a plurality of fan blades 120, and the fan blades 120 are uniformly distributed along the circumferential direction of the fan body.
Each fan blade 120 is connected to the fan body via a shaft 130, and each shaft 130 is connected to a first driving mechanism 140, so that the adjustment of each fan blade 120 is independent, and thus, the single-blade adjustment of one fan blade 120 can be realized.
Example 2
As shown in fig. 3 and 4, the present embodiment is different from embodiment 1 in that the angle adjusting mechanism further includes a second driving mechanism 150, and the second driving mechanism 150 is connected to a temperature detecting mechanism 200.
The rotating shaft 130 is provided with a wing plate 131, the movable end of the second driving mechanism 150 is connected with the wing plate 131, and the second driving mechanism 150 can push the wing plate 131 to rotate around the center of the rotating shaft 130.
Further, the second driving mechanism 150 is a linear driving mechanism.
Specifically, the linear driving mechanism may be a hydraulic cylinder, an air cylinder, or an electric cylinder.
Preferably, the second driving mechanism 150 is an electric cylinder.
An excavator comprises the engine cooling system.
Specifically, the heat dissipation capability can be effectively adjusted by changing the angle of the fan blades 120 of the fan 100 and changing the air output of the fan 100.
An engine cooling method comprising the steps of: acquiring a temperature value of engine cooling water; the blowing angle of the fan blades 120 of the fan 100 is adjusted according to the temperature value of the engine cooling water.
Specifically, the engine cooling method depends on the engine cooling system, the temperature detection mechanism 200 detects the temperature value of the engine cooling water, compares the temperature value with a preset temperature value, and sends a signal to the angle adjustment mechanism when the temperature value exceeds the preset temperature value, and the angle adjustment mechanism adjusts the air supply angle of the fan blades 120 of the fan 100 according to the signal, so as to adjust the heat dissipation capacity of the engine cooling system.
It should be noted that the step of obtaining the temperature value of the engine cooling water includes: and continuously acquiring the temperature data of the engine cooling water in a set time length, and confirming the temperature value of the engine cooling water according to the acquired temperature data.
The temperature data may include a plurality of temperature values by subtracting the maximum and minimum values from the temperature data and arithmetically averaging the remaining temperature values, the arithmetically averaged value being an engine cooling system temperature value.
In summary, the engine cooling system provided by the present invention includes a fan 100 and a temperature detection mechanism 200; the temperature detection mechanism 200 is used for detecting the temperature value of the engine cooling water; the fan 100 comprises a fan body 110, fan blades 120 and an angle adjusting mechanism, wherein the fan blades 120 are rotatably connected with the fan body 110; the temperature detection mechanism 200 is connected with the angle adjustment mechanism, the angle adjustment mechanism drives the fan blades 120 to rotate according to the temperature value of the engine cooling water detected by the temperature detection mechanism 200 so as to adjust the air supply angle of the fan blades 120, and the angle adjustment mechanism can adjust the air supply angle of the fan blades 120 according to the temperature value of the engine cooling water detected by the temperature detection mechanism, so that the air supply angle can be adjusted according to heat dissipation requirements. For example, when the temperature detection mechanism 200 is used, the temperature value of the engine cooling water is obtained, when the temperature value exceeds a preset temperature value of the engine cooling water, the temperature detection mechanism 200 sends a signal to the angle adjustment mechanism, the angle adjustment mechanism drives the fan blades 120 to rotate to a larger air supply angle according to the signal, the air supply amount is increased through the change of the air supply angle, the heat dissipation capacity of the engine cooling system is improved, and the temperature of the engine cooling water is adjusted to the preset temperature value.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An engine cooling system, characterized in that it comprises a fan (100) and a temperature detection mechanism (200);
the temperature detection mechanism (200) is used for detecting the temperature value of the engine cooling water;
the fan (100) comprises a fan body (110), fan blades (120) and an angle adjusting mechanism, wherein the fan blades (120) are rotatably connected with the fan body (110);
the temperature detection mechanism (200) is connected with the angle adjusting mechanism, and the angle adjusting mechanism drives the fan blades (120) to rotate according to the temperature value of the engine cooling water detected by the temperature detection mechanism (200) so as to adjust the air supply angle of the fan blades (120).
2. Engine cooling system according to claim 1, characterized in that the angle adjustment mechanism comprises a rotating shaft (130), one end of the rotating shaft (130) is connected with the fan blade (120), and the other end of the rotating shaft (130) is hinged with the fan body (110).
3. The engine cooling system according to claim 2, characterized in that the angle adjustment mechanism includes a first drive mechanism (140), the first drive mechanism (140) being connected with the temperature detection mechanism (200);
the first driving mechanism (140) is arranged on the fan body (110), the first driving mechanism (140) is connected with the rotating shaft (130), and the first driving mechanism (140) can drive the rotating shaft (130) to rotate so as to enable the fan blades (120) connected with the rotating shaft (130) to rotate.
4. The engine cooling system according to claim 2, characterized in that the angle adjustment mechanism includes a second drive mechanism (150), the second drive mechanism (150) being connected with the temperature detection mechanism (200);
be provided with pterygoid lamina (131) on pivot (130), the loose end of second actuating mechanism (150) with pterygoid lamina (131) are connected, second actuating mechanism (150) can promote pterygoid lamina (131) with the center of pivot (130) rotates.
5. Engine cooling system according to claim 4, characterized in that the second drive mechanism (150) is a linear drive mechanism.
6. Engine cooling system according to claim 5, characterized in that the second drive mechanism (150) is an electric cylinder.
7. The engine cooling system according to claim 1, wherein the number of the fan blades (120) is plural, and the plural fan blades are sequentially arranged at intervals in the circumferential direction of the fan body (110).
8. Engine cooling system according to any one of claims 1-7, characterized in that the temperature detection means (200) is a temperature sensor.
9. An excavator comprising an engine cooling system as claimed in any one of claims 1 to 8.
10. An engine cooling method, comprising the steps of:
acquiring a temperature value of engine cooling water;
the air supply angle of the fan blades (120) of the fan (100) is adjusted according to the temperature value of the engine cooling water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911111068.6A CN110805486A (en) | 2019-11-14 | 2019-11-14 | Engine cooling system and method and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911111068.6A CN110805486A (en) | 2019-11-14 | 2019-11-14 | Engine cooling system and method and excavator |
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| CN110805486A true CN110805486A (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911111068.6A Pending CN110805486A (en) | 2019-11-14 | 2019-11-14 | Engine cooling system and method and excavator |
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| CN (1) | CN110805486A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303575A (en) * | 2020-10-12 | 2021-02-02 | 厦门龙胜达照明电器有限公司 | LED lamp with fan function |
| CN114777370A (en) * | 2022-05-07 | 2022-07-22 | 雷沃工程机械集团有限公司 | Temperature regulation and control method for engineering machinery radiator system |
| CN116007166A (en) * | 2022-12-30 | 2023-04-25 | 青岛海尔空调器有限总公司 | Method and device for controlling air conditioner, electronic equipment and storage medium |
| CN116085104A (en) * | 2023-03-01 | 2023-05-09 | 长城汽车股份有限公司 | Cooling fan control strategy, device, equipment, medium and vehicle |
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Application publication date: 20200218 |
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