Intelligent cooling device of air compressor and cooling method thereof

Abstract

The application provides an intelligent cooling device and a cooling method of an air compressor, and relates to the technical field of air cooling equipment. The intelligent cooling device and the cooling method of the air compressor comprise a fan and a fan blade for heat dissipation of the equipment. The fan is further provided with an ECU. A plurality of mounting holes are formed in the circumferential direction of the fan for rotatingly mounting the fan blade. The root of the fan blade is provided with a socket. The fan is movably connected with a reversing block. One end of the reversing block is inserted into the socket. One of the socket and the reversing block is provided with a reversing groove, and the other is provided with a protrusion inserted into the reversing groove. When the fan rotates, the reversing block is radially moved away from the center of the fan under the centrifugal force, so that the fan blade is forced to rotate in the mounting hole under the extrusion of the protrusion on the reversing groove, so as to change the inclination angle of the fan blade mounted on the fan.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air cooling equipment, in particular to an intelligent cooling device for an air compressor and a cooling method thereof. BACKGROUND

[0002] An air compressor is a device for compressing air; the air compressor is similar in structure to a water pump; most air compressors are reciprocating piston type, rotary vane or rotary screw; when the compressor is working, air is sucked through a self-cleaning air filter, the filter is automatically cleaned by PLC, the air enters the first stage compression after being automatically adjusted by the inlet guide vane, the gas temperature after the first stage compression is high, then enters the intermediate cooler for cooling and then enters the second stage compression system; in order to prevent the gas in the system from flowing into the compression chamber, a suspended full-opening check valve is installed on the exhaust pipe of the compressor, the gas discharged from the compressor pushes the check valve to enter the exhaust muffler, then enters the first stage after-cooler, the second stage after-cooler, and then enters the exhaust main pipe.

[0003] The current air compressor still retains the air cooling structure, and a fan blade is needed for heat dissipation, but the rotating speed of the fan blade is usually fixed, and the inclination angle of the fan blade is also fixed; when the heat generated by the air compressor is not high, the fast rotating speed of the fan blade will cause energy waste and loud noise; when the working load of the air compressor is large and the heat generated is high, it is difficult to discharge the heat generated by the air compressor in time even if the rotating speed of the fan blade reaches the limit due to the fixed inclination angle of the fan blade, which causes the heat dissipation to be not in time and the internal devices to be burned out, causing greater loss. SUMMARY

[0004] The present application aims to provide an intelligent cooling device for an air compressor and a cooling method thereof, and aims to solve the problem that the fan blade with fixed inclination angle is difficult to discharge heat in time even if the rotating speed of the fan blade reaches the limit when the heat generated by the air compressor is very large.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions, embodiment one:

[0006] The fan and the fan blade for dissipating heat of the device are included, the ECU is further arranged on the fan, a plurality of mounting holes are arranged in the circumferential direction of the fan for rotatingly mounting the fan blade, the root of the fan blade is provided with a insertion hole, the reversing block is movably connected to the fan, one end of the reversing block is inserted into the insertion hole, one of the insertion hole and the reversing block is provided with a reversing slot, and the other is provided with a protrusion inserted into the reversing slot; when the fan rotates, the reversing block is moved radially away from the center of the fan under the centrifugal force, so that the fan blade is forced to rotate in the mounting hole under the extrusion of the protrusion on the reversing slot, so as to change the inclination angle of the fan blade mounted on the fan.

[0007] In order to keep all the fan blades to change the tilt angle of the installation on the fan, and keep all the fan blades to change the tilt angle of the installation on the fan, the linkage mechanism is provided on the fan, and the linkage mechanism is in driving connection with the plurality of fan blades to drive the plurality of fan blades to change the tilt angle of the installation on the fan.

[0008] Specifically, the linkage mechanism comprises a gear ring coaxially rotatably mounted on the fan, and the root of the fan blade is provided with a gear ring perpendicular to the axis of the gear ring, and the gear ring is engaged with the gear ring.

[0009] In order to be able to limit the tilt angle of the installation of the fan blade on the fan, the gear ring is provided with a fixing mechanism for limiting the tilt angle of the installation of the fan blade on the fan through the gear ring.

[0010] In the second embodiment of the fixing mechanism in the application, the fixing mechanism comprises a limiting frame mounted on the gear ring, a limiting slot is formed in the limiting frame, a base is provided in the fan, a limiting block is provided on the base through a second elastic member and can be inserted into the limiting slot, and the limiting block is located on one side of the fan shaft. When the rotating speed of the fan exceeds the set value, the limiting block is separated from the limiting slot, and the tilt angle of the installation of the fan blade on the fan will change according to the rotating speed of the fan.

[0011] In the third embodiment of the fixing mechanism in the application, the fixing mechanism can also be a limiting plate mounted on the gear ring, a plurality of adjusting holes for adjusting the angular position of the gear ring are provided on the fan, and the limiting plate can be connected with different adjusting holes, so as to adjust the tilt angle of the installation of the fan blade on the fan.

[0012] In order to facilitate the installation of the fan blade and the reversing plug, a plurality of guide grooves corresponding to the mounting holes are formed in the fan, the guide grooves are in communication with the corresponding mounting holes, the reversing plug is slidably installed in the guide groove, a first elastic member is arranged between the reversing plug and the guide groove, and a lock ring is arranged on the outer side of the mounting hole for fixing the fan blade.

[0013] In the first embodiment of the application, the cooling method of the intelligent cooling device of the air compressor comprises the following steps:

[0014] The ECU detects the temperature of the region to be cooled;

[0015] The ECU controls the fan to rotate at a suitable speed according to the temperature of the region to be cooled;

[0016] With the increase of the rotating speed of the fan, the reversing plug moves outward and extrudes the reversing groove through the protruding block, so as to change the tilt angle of the installation of the fan blade on the fan.

[0017] In the second embodiment of the application, the cooling method of the intelligent cooling device of the air compressor comprises the following steps:

[0018] The ECU detects the temperature of the region to be cooled;

[0019] The ECU controls the fan to rotate at a proper speed according to the temperature of the region to be cooled;

[0020] The ECU controls the rotating speed of the fan to break through the preset value, and unlocks the fixing mechanism;

[0021] With the increase of the rotating speed of the fan, the base moves outward and extrudes the reversing groove through the protruding block, so as to change the inclination angle of the fan blade installed on the fan.

[0022] In the second embodiment of the present application, the cooling method of the intelligent cooling device of the air compressor includes the following steps:

[0023] First, the screw or bolt is connected with the corresponding adjusting hole to adjust the angle of the gear ring rotation, so as to adjust the inclination angle of the fan blade installed on the fan;

[0024] The ECU detects the temperature of the region to be cooled;

[0025] The ECU controls the fan to rotate at a proper speed according to the temperature of the region to be cooled.

[0026] The present application has the following advantages:

[0027] 1. After the electric control silicon oil clutch fan is used in the diesel air compressor, under the normal working condition, the rotating speed of the fan is infinitely adjustable, and compared with the current conventional direct connection fan scheme, the rotating speed of the electric control silicon oil clutch fan is lower, the diesel engine power consumption is lower, and then the diesel engine oil consumption is reduced, so that the energy saving purpose is achieved; the reduction of the rotating speed of the fan is also beneficial to reduce the fan noise; in addition, when the ambient temperature is low, the water temperature of the diesel engine, the air inlet temperature and the screw lubricating oil temperature are low, the fan will not run at full speed, and the fan noise will also be lower;

[0028] 2. When the water temperature of the diesel engine, the air inlet temperature and the screw lubricating oil temperature are low, the rotating speed of the electric control silicon oil clutch fan will also increase, at this time, the reversing plug can move outward with the increase of the rotating speed of the electric control silicon oil clutch fan, the inclination angle of the fan blade installed on the fan is increased, so that under the same rotating speed, the wind power of the electric control silicon oil clutch fan is stronger, the heat dissipation performance is effectively improved, the same heat dissipation effect can be achieved at a lower rotating speed, so that the energy consumption is effectively reduced, and the noise of the electric control silicon oil clutch fan is also reduced;

[0029] 3. The limiting plate is connected with different adjusting holes through the screw or bolt, and then the rotating angle of the gear ring is adjusted, the inclination angle of the fan blade installed on the fan is fixed through the gear ring, and manual adjustment of the inclination angle of the fan blade installed on the fan is also realized, so that the operation convenience is provided for the specific use environment. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the front view of the protective cover after opening in the embodiment one of the present application;

[0031] Figure 2 is the front view of the protective cover after opening in the embodiment one of the present application;

[0032] Figure 3 is the front view of the protective cover after opening in the embodiment one of the present application; Figure 2

[0033] Figure 4 is the front view of the protective cover after opening in the embodiment one of the present application;

[0034] Figure 5 is the front view of the protective cover after opening in the embodiment one of the present application;

[0035] Figure 6 is the front view of the protective cover after opening in the embodiment one of the present application;

[0036] Figure 7 is the front view of the protective cover after opening in the embodiment one of the present application;

[0037] Figure 8 is the front view of the protective cover after opening in the embodiment one of the present application;

[0038] Figure 9 is the front view of the protective cover after opening in the embodiment one of the present application;

[0039] Figure 10 is the front view of the protective cover after opening in the embodiment one of the present application;

[0040] In the figure: 1, fan; 11, mounting hole; 12, guide groove; 13, positioning block; 2, fan blade; 21, insertion hole; 22, reversing groove; 3, reversing insertion block; 31, protruding block; 4, linkage mechanism; 401, gear ring; 402, gear ring; 5, fixing mechanism; 511, limiting frame; 512, limiting groove; 513, base; 514, second elastic member; 515, limiting block; 516, inclined surface, 521, limiting plate; 522, adjusting hole; 6, first elastic member; 7, lock ring; 8, protective cover; 9, ECU. DETAILED DESCRIPTION

[0041] The specific embodiments of the present application will be further described below in conjunction with the drawings.

[0042] Embodiment one: as Figure 1 ​As shown, an intelligent cooling device of an air compressor, comprising a fan 1 and a fan blade 2 for heat dissipation of the device, the device includes but is not limited to diesel air compressor, and the fan 1 includes but is not limited to electrically controlled silicon oil clutch fan. Because the speed of the electrically controlled silicon oil clutch fan is infinitely adjustable, the speed of the electrically controlled silicon oil clutch fan is reduced, which can reduce noise while ensuring effective heat dissipation. In addition, when the ambient temperature is low, the water temperature of the diesel engine and the intake temperature and the screw lubricating oil temperature are low, the electrically controlled silicon oil clutch fan will not run at full speed, so that the energy consumption is smaller, more energy saving and environmental protection.

[0043] Please refer to Figure 2 and Figure 3 , a plurality of mounting holes 11 are arranged on the circumference of the fan 1, and the plurality of mounting holes 11 are uniformly arranged, for rotatingly mounting the fan blade 2. When the fan blade 2 is inserted into the mounting hole 11, the outer side end of the mounting hole 11 is provided with a lock ring 7, which can be connected with the fan 1 by bolts or screws or directly threaded, for fixing the fan blade 2 in the mounting hole 11, while ensuring that the fan blade 2 can rotate in the mounting hole 11. It is convenient to adjust the installation angle of the fan blade 2 on the fan 1 during the rotation of the fan 1 driving the fan blade 2, so as to increase the wind force generated by the rotation of the fan 1 under the condition that the rotation speed of the fan 1 is unchanged, thereby achieving better heat dissipation effect.

[0044] Please refer to Figure 3 and Figure 4 , the root of the fan blade 2 is provided with a insertion hole 21, and the fan 1 is provided with a plurality of guide grooves 12 corresponding to the mounting holes 11 one by one, the guide grooves 12 are communicated with the corresponding mounting holes 11, and a reversing plug 3 is slidingly installed in the guide groove 12. When the fan 1 rotates, the reversing plug 3 is subjected to the action of centrifugal force and moves away from the center of the fan 1 along the guide groove 12, so that the end of the reversing plug inserted into the insertion hole 21 can relatively move in the insertion hole 21.

[0045] Please refer to Figure 4 and Figure 5 , one of the insertion hole 21 and the reversing plug 3 is provided with a reversing groove 22, and the other is provided with a protrusion 31 inserted into the reversing groove 22. As shown, when the reversing groove 22 is arranged on the inner wall of the insertion hole 21, the reversing groove 22 is arranged obliquely on the inner wall of the insertion hole 21, the protrusion 31 is arranged on the reversing plug 3 and is inserted into the reversing groove 22. When the fan 1 rotates, the reversing plug is subjected to the centrifugal force and moves radially away from the center of the fan 1, and the protrusion 31 is inserted into the depth of the reversing groove 22, so that the fan blade 2 is forced to rotate in the mounting hole 11 under the extrusion of the protrusion 31 to the reversing groove 22, so as to change the inclination angle of the fan blade 2 installed on the fan 1; when the reversing groove 22 is arranged on the reversing plug 3, and the protrusion 31 is arranged on the inner wall of the insertion hole 21, the same is not described here.

[0046] Further, the reversing plug 3 and the guide groove 12 are provided with a first elastic member 6, which is used to realize the correlation between the inclination angle of the fan blade 2 installed on the fan 1 and the rotating speed of the fan 1. When the rotating speed of the fan 1 is greater, the centrifugal force acting on the reversing plug 3 will be greater, and the distance of the outward movement of the reversing plug 3 will be increased. At this time, the first elastic member 6 can effectively control the distance of the outward movement of the reversing plug 3 according to the pressure acting on the reversing plug 3, and further increase the inclination angle of the fan blade 2 installed on the fan 1. After the fan 1 stops rotating, the first elastic member 6 can also automatically reset under the reaction force of the first elastic member 6.

[0047] It needs to be specially pointed out that the first elastic member 6 is a tension spring.

[0048] Please refer to Figure 1 and Figure 2 , the fan 1 is also provided with an ECU 9. The ECU 9 can detect the temperature of the area to be cooled of the diesel air compressor, and simultaneously, the ECU 9 can adjust the rotating speed of the electric control silicon oil clutch fan according to the temperature detection result. When the water temperature of the diesel engine, the intake temperature and the screw lubricating oil temperature are high, the rotating speed of the electric control silicon oil clutch fan will be increased, and at this time, the centrifugal force acting on the reversing plug 3 will be increased, and the distance of the outward movement of the reversing plug 3 will be increased, and further increase the inclination angle of the fan blade 2 installed on the fan 1. In this way, under the same rotating speed, the wind power of the electric control silicon oil clutch fan is more powerful, and the cooling performance will be effectively improved. The same cooling effect can be realized at a lower rotating speed, which will effectively reduce the energy consumption and the noise of the electric control silicon oil clutch fan.

[0049] Please refer to Figures 1-5 , the fan 11 is provided with a linkage mechanism 45. The linkage mechanism 4 is used to synchronously drive multiple fan blades 2 to change the inclination angle at equal angles.

[0050] The fan 1 is provided with a positioning block 13 for limiting the gear ring 401, and the fan 1 is also provided with a protective cover 8 for the linkage mechanism 4 to play a shielding role. The protective cover 8 is bolted on the fan 1.

[0051] Specifically, the linkage mechanism 4 includes a gear ring 401 coaxially and rotationally installed on the fan 1. The root of the fan blade 2 is provided with a gear ring 402 perpendicular to the axis of the gear ring 401. The gear ring 402 is engaged with the gear ring 401.

[0052] When one fan blade 2 rotates, the tilt angle of the installation of the fan blade 2 changes, the gear ring 402 drives the gear ring 401 to rotate, the gear ring 401 drives all the fan blades 2 to rotate, ensuring that all the fan blades 2 are in a synchronous rotating state, for ensuring that all the fan blades 2 are at the same installation angle, and further ensuring the stability of the fan blades 2 when the fan 1 rotates;

[0053] It needs to be specially pointed out that the linkage mechanism 4 includes but is not limited to the gear ring 401, the gear ring 402 structure, and further includes the bevel gear ring 401, the bevel gear structure, the gear-worm gear assembly mechanism, etc.

[0054] Please refer to Figures 6-10 The gear ring 401 is provided with a fixing mechanism 5, the fixing mechanism 5 is used for limiting the tilt angle of the installation of the fan blade 2 on the fan 1 through the gear ring 401, and sets a limiting condition for the change of the tilt angle of the installation of the fan blade 2 on the basis of adjusting the tilt angle of the installation of the fan blade 2 with the rotating speed of the fan 1, so as to meet the needs of different use environments.

[0055] Embodiment two: please refer to Figures 6-8 The fixing mechanism 5 includes a limiting frame 511 installed on the gear ring 402, a limiting groove 512 is formed on the inner wall of the side close to the center of the fan 1, a base 513 is fixedly connected on the fan 1 and located in the limiting frame 511, the base 513 is provided with a limiting block 515 which can be inserted into the limiting groove 512 through a second elastic piece 514, and the limiting block 515 is located on one side of the shaft center of the fan 1, when the rotating speed of the fan 1 breaks through the set value, the limiting block 515 is separated from the limiting groove 512, and the tilt angle of the installation of the fan blade 2 on the fan 1 will change according to the rotating speed of the fan 1;

[0056] In the initial state of work, the limiting block 515 is inserted into the limiting groove 512, the gear ring 401 is fixed and cannot rotate, due to the limitation of the gear ring 401 and the gear ring 402, at this time, the tilt angle of the installation of the fan blade 2 on the fan 1 will be in a fixed state, and under the blockage of the reversing groove 22, the centrifugal force generated by the rotation of the fan 1 will not be enough to force the reversing plug 3 to be inserted into the deep part of the insertion hole 21, that is, the tilt angle of the installation of the fan blade 2 on the fan 1 cannot be changed;

[0057] When the rotating speed of the fan 1 breaks through the preset value, at this time, the limiting block 13 will compress the second elastic piece 514 under the action of the centrifugal force, and is separated from the limiting groove 512, the gear ring 401 is released, so that the reversing plug 3 can be inserted into the deep part of the insertion hole 21 under the action of the centrifugal force, and further through the inclined part of the reversing groove 22, the function of automatically adjusting the tilt angle of the installation of the fan blade 2 on the fan 1 is realized, so that the adjustment is more automatic;

[0058] Need special note, the limit frame 511 and the limit block 515 mutual contact surface is the inclined surface 516, so in the fan 1 stop rotating, under the pressure of the second elastic member 514 and the first elastic member 6 push the commutating plug 3 reset the thrust, and the inertia effect, the gear ring 401 will direction rotation, the limit block 515 will along the inclined surface 516 again to the direction of the limit groove 512 moves, and the gear ring 401 will drive the fan blade 2 through the ring 402 to the initial angle reset, until the limit block 515 again inserted into the limit groove 512, the fan blade 2 again restore the initial angle position, realize the fan blade 2 installation angle automatic recovery, improve the convenience of use;

[0059] Example three: please refer to Figures 9-10 , the fixed mechanism 5 can also be a limit plate 521 installed on the gear ring 401, the limit plate 521 is provided with a hole, the fan 1 is provided with a plurality of adjusting holes 522 for adjusting the rotation angle position of the gear ring 401, the limit plate 521 is connected with different adjusting holes 522 by using screws or bolts, thereby adjusting the rotation angle of the gear ring 401, fixing the fan blade 2 on the fan 1 installation angle through the gear ring 401, realize the manual adjustment of the fan blade 2 on the fan 1 installation angle.

[0060] The heat dissipation method in example one includes the following steps:

[0061] Step one: ECU 9 detects the temperature of the area to be cooled;

[0062] Step two: ECU 9 controls the fan 1 to rotate at an appropriate speed according to the temperature of the area to be cooled;

[0063] Step three: with the increase of the fan 1 speed, the commutating plug 3 moves outward, and extrudes the commutating groove 22 through the convex block 31, so as to change the fan blade 2 installation angle on the fan 1.

[0064] The heat dissipation method in example two includes the following steps:

[0065] Step one: ECU 9 detects the temperature of the area to be cooled;

[0066] Step two: ECU 9 controls the fan 1 to rotate at an appropriate speed according to the temperature of the area to be cooled;

[0067] Step three: ECU 9 controls the speed of the fan 1 to break through the preset value, and unlocks the fixed mechanism 5;

[0068] Step four: with the increase of the fan 1 speed, the commutating plug 3 moves outward, and extrudes the commutating groove 22 through the convex block 31, so as to change the fan blade 2 installation angle on the fan 1.

[0069] The heat dissipation method in example three includes the following steps:

[0070] Step one: first use screw or bolt and corresponding adjustment hole 522 connection, adjust the angle of rotation of the gear ring 401, thereby adjusting the angle of inclination of the fan 1 installed on the fan blade 2;

[0071] Step two: ECU 9 detects the temperature of the area to be cooled;

[0072] Step three: ECU 9 controls the fan 1 to rotate at an appropriate speed according to the temperature of the area to be cooled.

[0073] In the description of the present application, unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. An intelligent cooling device of an air compressor, comprising a fan (1) and a fan blade (2) for cooling the device, and an ECU (9) is further arranged on the fan (1), characterized in that, The fan (1) is provided with a plurality of mounting holes (11) in the circumferential direction, which are used for rotatingly mounting the fan blades (2). The root of the fan blade (2) is provided with a insertion hole (21). The fan (1) is movably connected with a reversing plug (3). One end of the reversing plug (3) is inserted into the insertion hole (21). One of the insertion hole (21) and the reversing plug (3) is provided with a reversing slot (22). The other one is provided with a protrusion (31) which is inserted into the reversing slot (22). When the fan (1) rotates, the reversing plug (3) is moved radially by centrifugal force towards the direction away from the center of the fan (1). Thus, under the action of the protrusion (31) pressing the reversing slot (22), the fan blade (2) is forced to rotate in the mounting hole (11), so as to change the inclination angle of the fan blade (2) mounted on the fan (1). The fan (1) is provided with a linkage mechanism (4). The linkage mechanism (4) is in transmission connection with a plurality of fan blades (2), so as to synchronously drive the plurality of fan blades (2) to change the inclination angle of the fan blades (2) mounted on the fan (1) by equal angles. The linkage mechanism (4) comprises a gear ring (401) which is coaxially and rotatably mounted on the fan (1). The root of the fan blade (2) is provided with a gear ring (402) which is perpendicular to the axis of the gear ring (401). The gear ring (402) is in meshing connection with the gear ring (401). The gear ring (401) is provided with a fixing mechanism (5). The fixing mechanism (5) is used for limiting the inclination angle of the fan blade (2) mounted on the fan (1) through the gear ring (401).

2. The intelligent cooling device of claim 1, wherein, The fixing mechanism (5) comprises a limiting frame (511) which is mounted on the gear ring (402). The limiting frame (511) is provided with a limiting slot (512). The fan (1) is provided with a base (513) which is located in the limiting frame (511). The base (513) is provided with a limiting block (515) which can be inserted into the limiting slot (512) through a second elastic member (514). The limiting block (515) is located on one side of the axis of the fan (1). When the rotating speed of the fan (1) exceeds a set value, the limiting block (515) is separated from the limiting slot (512). Thus, the inclination angle of the fan blade (2) mounted on the fan (1) can be changed according to the rotating speed of the fan (1).

3. The intelligent cooling device for air compressor of claim 1, wherein, The fixing mechanism (5) is a limiting plate (521) which is mounted on the gear ring (401). The fan (1) is provided with a plurality of adjusting holes (522) which are used for adjusting the rotating position of the gear ring (401). The limiting plate (521) can be connected with different adjusting holes (522), so as to adjust the inclination angle of the fan blade (2) mounted on the fan (1).

4. The intelligent cooling device of claim 1, wherein, The fan (1) is provided with a plurality of guide slots (12) which correspond to the mounting holes (11) one by one. The guide slots (12) are in communication with the corresponding mounting holes (11). The reversing plug (3) is slidably mounted in the guide slot (12). The first elastic member (6) is arranged between the reversing plug (3) and the guide slot (12). The outer side end of the mounting hole (11) is provided with a lock ring (7) which is used for fixing the fan blade (2).

5. The cooling method of the intelligent cooling device of the air compressor machine according to claim 1, characterized in that, The method comprises the following steps: The ECU (9) detects the temperature of the region to be cooled. The ECU (9) controls the fan (1) to rotate at a proper speed according to the temperature of the area to be cooled; With the increase of the rotating speed of the fan (1), the reversing plug (3) moves outward and presses the reversing slot (22) through the protrusion (31), so as to change the tilt angle of the fan blade (2) installed on the fan (1).

6. The cooling method of the intelligent cooling device of the air compressor according to claim 2, wherein, The method comprises the following steps: The ECU (9) detects the temperature of the area to be cooled; The ECU (9) controls the fan (1) to rotate at a proper speed according to the temperature of the area to be cooled; The ECU (9) controls the rotating speed of the fan (1) to break through the preset value, and unlocks the fixing mechanism (5); With the increase of the rotating speed of the fan (1), the reversing plug (3) moves outward and presses the reversing slot (22) through the protrusion (31), so as to change the tilt angle of the fan blade (2) installed on the fan (1).

7. The cooling method of the intelligent cooling device of the air compressor machine according to claim 3, wherein, The method comprises the following steps: First, the screw or bolt is connected with the corresponding adjusting hole (522), the angle of the adjusting gear ring (401) is adjusted, and the tilt angle of the fan blade (2) installed on the fan (1) is adjusted; The ECU (9) detects the temperature of the area to be cooled; The ECU (9) controls the fan (1) to rotate at a proper speed according to the temperature of the area to be cooled.

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