CN113847264A - Fan rotation control system and control method thereof - Google Patents
Fan rotation control system and control method thereof Download PDFInfo
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- CN113847264A CN113847264A CN202111188302.2A CN202111188302A CN113847264A CN 113847264 A CN113847264 A CN 113847264A CN 202111188302 A CN202111188302 A CN 202111188302A CN 113847264 A CN113847264 A CN 113847264A
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- fan
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- blade
- control system
- rotation control
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000000428 dust Substances 0.000 claims abstract description 51
- 238000007664 blowing Methods 0.000 claims abstract description 28
- 238000004378 air conditioning Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 10
- 238000004140 cleaning Methods 0.000 description 7
- 239000012535 impurity Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 208000002874 Acne Vulgaris Diseases 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 206010000496 acne Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- 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
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- 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 fan rotation control system and a control method thereof. The blade rotating motor is electrically connected with an external controller and a dust sensor in turn. The fan has two working modes of an air blowing mode and an air suction mode. The control method of the fan rotation control system comprises the following steps: s101, detecting external dust concentration by a dust sensor, and transmitting the dust concentration to a controller, S102, analyzing whether the dust concentration exceeds a set threshold value by the controller, and judging the current working mode of the fan, S103, keeping or changing the working mode of the fan according to the judgment result of the step S102; after step S104 and step S103 are completed, step S101 is executed from the beginning. The invention improves the automation degree, ensures the heat dissipation effect and improves the operation efficiency.
Description
Technical Field
The invention relates to the field of radiators, in particular to a fan rotation control system and a control method thereof.
Background
The engine of the loader adopts a blowing fan, cold air flows forcibly from the side of the engine to the tail of the whole vehicle under the action of the fan, and the heat exchange between the cold air and the radiator is changed into hot air which is blown to the tail of the whole vehicle. The wind field generated by the rotation of the fan passes through the air conditioner condenser, the radiator and the rear wind window of the whole vehicle in sequence through the flow guide of the radiator wind guide cover.
The fan adopted by the engine is generally an axial flow fan, and the fan has the characteristics of large flow and low static pressure, but in the operation of a biomass power plant, the operation contents comprise stacking, loading and the like of fuels such as rice hulls, crushed straws, branches and the like; because the suction type operation mode is often adopted in special operation environments such as large dust, much flying floc, much scrap powder and the like on an operation site, acne is accumulated in gaps of the heat exchanger at the moment, so that the ventilation resistance is increased rapidly, and the axial flow fan cannot resist the high-resistance environment at the moment, so that the air supply volume is reduced, and the heat exchange is influenced.
The prior art has the following defects: the engine adopts a blowing fan, cold air flows forcibly from the side of the engine to the tail of the whole vehicle under the action of the fan, and the heat exchange between the cold air and the radiator is changed into hot air which is blown to the tail of the whole vehicle. This arrangement has disadvantages:
(1) the fan rotates to bring cold air, simultaneously brings impurities in the air into the air, and accumulates the impurities in the air guide cover; the air guide cover, the radiator and the fan are arranged in a small space, so that the cleaning is difficult, the cleaning frequency is high, and the working efficiency is influenced;
(2) impurities in an interlayer between the air-conditioning condenser and the radiator on the inner side of the air guide cover cannot be cleaned; leading to blockage of the surface of the radiator and high temperature;
(3) due to space limitation, impurity cleaning is not thorough, so that the surface of the radiator is blocked, the heat dissipation performance is reduced, and high-temperature faults are caused.
Disclosure of Invention
The invention aims to solve the problems that: the fan rotates to bring cold air and brings dust particles into the whole machine, so that the radiator is easily blocked, the radiating effect is affected, the operating efficiency is reduced, and even high-temperature faults are caused.
In view of the above technical problems, the present invention discloses a fan rotation control system and a control method thereof, the fan rotation control system including an engine and a fan connected to the engine. The fan comprises a blade fixing seat and a plurality of blades, wherein the blades are all installed on the blade fixing seat through a blade rotating motor, the blade rotating motor can drive the blades to rotate, and the blade rotating motor is electrically connected with an external controller and a dust sensor in sequence. The fan has two working modes of a blowing mode and an air suction mode, and when the fan is in the blowing mode, the front side edge of each blade is positioned on the right side of the central tangent plane; when the fan is in an air suction mode, the front side edge of the blade is positioned on the left side of the central tangent plane. The automation degree of the loader is improved due to the arrangement of the controller and the dust sensor, and the blades can rotate due to the arrangement of the blade rotating motor, so that the fan has different working modes.
Preferably, when the fan is respectively located in the blowing mode and the suction mode, the positions of the blades are symmetrical to each other, so that the wind power of the fan in the two working modes is relatively close.
Preferably, the vane rotating motor is a stepping motor, which can effectively ensure the accuracy of the rotating angle when controlling the rotation of the vane.
Preferably, be located the fan is kept away from one side of engine still has set gradually radiator and air conditioner condenser, the radiator includes the windshield, the fan is located in the windshield, the windshield can carry out the water conservancy diversion to the air current that the fan produced, guarantees the radiating effect.
The control method of the fan rotation control system comprises the following steps:
s101, detecting external dust concentration by the dust sensor, and transmitting the dust concentration to the controller;
s102, the controller analyzes whether the dust concentration exceeds a set threshold value and judges the current working mode of the fan;
s103, keeping or changing the working mode of the fan according to the judgment result of the step S102;
after step S104 and step S103 are completed, step S101 is executed from the beginning.
According to the current working mode and dust concentration condition of the fan, the working mode of the fan is kept or changed, the dust amount entering the whole machine is greatly reduced, the heat dissipation effect is guaranteed, and the operation efficiency is improved.
Preferably, the step S103 of maintaining or changing the operating mode of the fan according to the judgment result of the step S102 specifically includes the following steps:
and S1031, if the fan is in the blowing mode and the dust concentration exceeds the threshold value, changing the working mode of the fan into the air suction mode, and controlling the blade rotating motor to rotate reversely by the controller so that the front side of the blade rotates to the left side of the central tangent plane.
Cold air is blown to the tail of the whole engine from the engine side, so that dust particles entering the whole engine along with the cold air can be greatly reduced, the cleaning frequency is greatly reduced, and the operation efficiency is improved; the heat dissipation performance can be prevented from being influenced due to the fact that impurities cannot be cleaned, and high-temperature accidents are caused; and the air quantity attenuation caused by the accumulated dust particles can be prevented, and the heat dissipation effect is ensured.
Preferably, the step S103 of maintaining or changing the operating mode of the fan according to the judgment result of the step S102 specifically includes the following steps:
s1032, if the fan is in the air suction mode and the dust concentration does not exceed the threshold value, changing the working mode of the fan into the air blowing mode, and controlling the blade rotating motor to rotate in the forward direction by the controller so that the front side edge of the blade rotates to the right side of the central tangent plane.
When the dust concentration does not exceed the set threshold, the problem that dust enters the whole machine does not exist, the fan working mode is changed into the blowing mode, the heat dissipation effect is guaranteed, the wind direction is changed due to the switching of the fan working mode, and the cleaning of partial dust in the whole machine is facilitated.
Preferably, the step S103 of maintaining or changing the operating mode of the fan according to the judgment result of the step S102 specifically includes the following steps:
s1033, if the fan is in the blowing mode and the dust concentration does not exceed the threshold value, or the fan is in the suction mode and the dust concentration exceeds the threshold value, the working mode of the fan is maintained.
All the steps form a complete closed loop, and the automation degree of the loader is improved.
In conclusion, the beneficial effects of the invention are as follows: the degree of automation of the loader is improved, the accumulation speed of dust in the whole loader is greatly reduced, the heat dissipation effect is guaranteed, and the operation efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of a fan in a blowing mode according to the present invention;
FIG. 2 is a schematic structural view of the fan in the air suction mode according to the present invention;
FIG. 3 is a schematic view of a fan according to the present invention;
FIG. 4 is a schematic illustration of the position of the fan blades in the blowing mode and the suction mode (dashed lines), top of the figure being near the engine side;
FIG. 5 is a flow chart of a control method of the present invention;
in the figure: 1. the air conditioner comprises an engine, 2, a fan, 21, blades, 211, an air blowing mode position, 212, an air suction mode position, 22, a blade rotating motor, 3, a blade fixing seat, 4, a radiator, 5, an air conditioner condenser, 6, a controller, 7, a dust sensor, 8 and a rear air window.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1 to 3 (the direction indicated by the arrow in fig. 1 and 2 is the wind direction in the current operation mode), the fan rotation control system according to the present invention includes an engine 1, a fan 2, a radiator 4, and an air conditioning condenser 5, which are arranged in this order. The heat radiator 4 comprises a wind shield, and the fan 2 is located in the wind shield. The wind shield can guide the airflow generated by the fan 2, so that the heat dissipation effect is ensured. The fan 2 comprises a blade holder 3 and a plurality of blades 21. The blades 21 are all installed on the blade fixing seat 3 through a blade rotating motor 22, and the blade rotating motor 22 can drive the blades 21 to rotate. The blade rotating motor 22 is electrically connected with the external controller 6 and the dust sensor 7 in sequence, and the blade rotating motor 22 is preferably a stepping motor, which can effectively ensure the accuracy of the rotating angle when controlling the rotation of the blade 21.
The fan 2 includes a blowing mode and a suction mode. As shown in fig. 4, when the fan 2 is in the blowing mode, the front side of the blade 21 is located at the right side of the center tangential plane, and the blade is located at the blowing mode position 211; when the fan 2 is in the suction mode, the front side of the blade 21 is located at the left side of the center tangential plane, and the blade 21 is located at the suction mode position 212. Preferably, when the fan 2 is respectively located in the blowing mode and the suction mode, the positions of the blades 21 are symmetrical to each other, so that the wind power of the fan 2 in the two working modes can be effectively prevented from having a large difference.
As shown in fig. 5, the control method of the fan rotation control system includes the following steps:
s101, detecting external dust concentration by the dust sensor 7, and transmitting the dust concentration to the controller 6;
s102, the controller 6 analyzes whether the dust concentration exceeds a set threshold value and judges the current working mode of the fan 2;
s103, maintaining or changing the operation mode of the fan 2 according to the determination result of the step S102, specifically including the following steps (S1031, S1032, S1033):
1031, if the fan 2 is in the blowing mode and the dust concentration exceeds the threshold value, changing the working mode of the fan 2 into the air suction mode, and controlling the blade rotating motor 22 to rotate reversely by the controller 6 so that the front side of the blade 21 rotates to the left side of the central tangent plane;
s1032, if the fan 2 is in the air suction mode and the dust concentration does not exceed the threshold, changing the working mode of the fan 2 to the air blowing mode, and controlling the vane rotating motor 22 to rotate forward by the controller 6, so that the front side of the vane 21 rotates to the right side of the center tangent plane;
s1033, if the fan 2 is in the blowing mode and the dust concentration does not exceed the threshold, or the fan 2 is in the suction mode and the dust concentration exceeds the threshold, maintaining the working mode of the fan 2;
after step S104 and step S103 are completed, step S101 is executed from the beginning.
All the steps form a complete closed loop, and the automation degree of the loader is improved.
The fan 2 is in the blowing mode, the dust concentration exceeds the threshold value, and after the working mode of the fan 2 is the air suction mode, cold air is blown to the engine 1 from the rear air window 8 at the tail part of the whole machine from the side of the engine 1 instead of being blown to the engine 1 from the rear air window 8, so that dust particles entering the inside of the whole machine along with the cold air can be greatly reduced, the cleaning frequency is greatly reduced, and the working efficiency is improved; the surface of the radiator 4 is blocked due to the fact that impurities between the radiator 4 and the air conditioner condenser 5 cannot be cleaned, and further the heat dissipation performance is reduced, so that high-temperature accidents are prevented; and the air quantity attenuation caused by dust particles accumulated in the air guide cover can be prevented, and the heat dissipation effect is ensured.
The fan 2 can be switched between the blowing mode and the suction mode in accordance with the external dust concentration condition in cooperation with the dust sensor 7, the controller 6, and the blade rotating motor 22. A small amount of dust can be inevitably accumulated in the whole machine, the switching of the working modes of the fan 2 is helpful for cleaning partial dust in the whole machine, the heat dissipation effect is further ensured, and the operation efficiency is improved.
It should be noted that the side close to the engine 1 is "front" and the side far from the engine 1 is "rear", and the central section is a plane defined by the central axis of the blade 21 and the central axis of the blade holder 3.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (8)
1. A fan rotation control system comprises an engine (1) and a fan (2) connected with the engine, the fan (2) comprises a blade fixing seat (3) and a plurality of blades (21), it is characterized in that the blades (21) are all arranged on the blade fixing seat (3) through a blade rotating motor (22), the blade rotating motor (22) can drive the blade (21) to rotate, the blade rotating motor (22) is electrically connected with an external controller (6) and a dust sensor (7) in sequence, the fan (2) has two working modes of a blowing mode and an air suction mode, when the fan (2) is in the blowing mode, the front side edge of the blade (21) is positioned on the right side of the central tangent plane, and when the fan (2) is in an air suction mode, the front side edge of the blade (21) is positioned on the left side of the central tangent plane.
2. A fan rotation control system according to claim 1, wherein the positions of the blades (21) are symmetrical to each other when the fan (2) is in the blowing mode and the suction mode, respectively.
3. A fan rotation control system as claimed in claim 1, wherein the blade rotating motor (22) is a stepping motor.
4. A fan rotation control system according to claim 1, characterized in that a radiator (4) and an air conditioning condenser (5) are further provided in sequence on a side of the fan (2) away from the engine (1), the radiator (4) includes a windshield, and the fan (2) is located in the windshield.
5. A control method of the fan rotation control system according to claim 1, comprising the steps of:
s101, detecting the external dust concentration by the dust sensor (7), and transmitting the dust concentration to the controller (6);
s102, the controller (6) analyzes whether the dust concentration exceeds a set threshold value and judges the current working mode of the fan (2);
s103, keeping or changing the working mode of the fan (2) according to the judgment result of the step S102;
after step S104 and step S103 are completed, step S101 is executed from the beginning.
6. The method for controlling the fan rotation control system according to claim 5, wherein the step S103 of maintaining or changing the operation mode of the fan (2) according to the determination result of the step S102 specifically comprises the steps of:
and S1031, if the fan (2) is in the blowing mode and the dust concentration exceeds the threshold value, changing the working mode of the fan (2) into the air suction mode, and controlling the blade rotating motor (22) to rotate reversely by the controller (6) so that the front side of the blade (21) rotates to the left side of the central tangent plane.
7. The method for controlling the fan rotation control system according to claim 5, wherein the step S103 of maintaining or changing the operation mode of the fan (2) according to the determination result of the step S102 specifically comprises the steps of:
s1032, if the fan (2) is in the air suction mode and the dust concentration does not exceed the threshold value, changing the working mode of the fan (2) into the air blowing mode, and controlling the blade rotating motor (22) to rotate in the forward direction by the controller (6) so that the front side of the blade (21) rotates to the right side of the central tangent plane.
8. The method for controlling the fan rotation control system according to claim 5, wherein the step S103 of maintaining or changing the operation mode of the fan (2) according to the determination result of the step S102 specifically comprises the steps of:
s1033, if the fan (2) is in the blowing mode and the dust concentration does not exceed the threshold value, or the fan (2) is in the suction mode and the dust concentration exceeds the threshold value, keeping the working mode of the fan (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111188302.2A CN113847264A (en) | 2021-10-12 | 2021-10-12 | Fan rotation control system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111188302.2A CN113847264A (en) | 2021-10-12 | 2021-10-12 | Fan rotation control system and control method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113847264A true CN113847264A (en) | 2021-12-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111188302.2A Pending CN113847264A (en) | 2021-10-12 | 2021-10-12 | Fan rotation control system and control method thereof |
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| Country | Link |
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| CN (1) | CN113847264A (en) |
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Country or region after: China Address after: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Applicant after: Lovol Heavy Industry Group Co.,Ltd. Address before: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Applicant before: LOVOL Engineering Machinery Group Co.,Ltd. Country or region before: China |