CN114243999B

CN114243999B - Automobile alternating-current generator with silencing ring structure and heat dissipation method thereof

Info

Publication number: CN114243999B
Application number: CN202111601852.2A
Authority: CN
Inventors: 黄璐; 谢东晓; 沈建; 沈润荣; 柏程程
Original assignee: Zhejiang Add Auto Parts Co ltd
Current assignee: Zhejiang Add Auto Parts Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2023-04-07
Anticipated expiration: 2041-12-24
Also published as: CN114243999A

Abstract

The invention discloses an automobile alternating-current generator with a noise reduction ring structure and a heat dissipation method thereof, and the automobile alternating-current generator comprises a generator fixed on a bottom plate, wherein a rectifier bridge support body is arranged inside the generator, a noise reduction ring is connected to an end cover at the top of the generator, a seal box is welded at the top of a cooling water tank, a water storage tank is formed inside the cooling water tank, a cavity communicated with the water storage tank is formed inside the seal box, a rotating shaft is rotatably connected to the center of the cavity, a plurality of rotating plates are annularly sleeved on the circumferential surface of the rotating shaft, each rotating plate is hermetically arranged with the inside of the seal box, and when each rotating plate rotates to the water storage tank, cooling liquid inside the rotating plate can be disturbed. When the generator in the invention rotates slowly, the cooling fan and the external cooling liquid circulate to cool the generator, and when the generator rotates at high speed, the cooling liquid simultaneously cools the rectifier bridge bracket body from the inside, so that the triple cooling has better cooling effect.

Description

Automobile alternating-current generator with silencing ring structure and heat dissipation method thereof

Technical Field

The invention belongs to the technical field of automobile generator heat dissipation, and particularly relates to an automobile alternating-current generator with a silencing ring structure and a heat dissipation method thereof.

Background

When the car moves at a high speed, can drive the generator and rotate fast, can make the inside higher heat that produces of generator, because automobile power generation machine rectifier bridge support all is the inside of installing at the generator, so the high temperature that the high-speed rotation of generator produced can make the inside generator rectifier bridge support of generator generate heat, if the heat of generator rectifier bridge support can't be timely distribute away, then can make generator rectifier bridge support take place to damage, influence the normal use of generator.

Disclosure of Invention

The present invention is directed to an automotive alternator with a noise reduction ring structure and a method for dissipating heat thereof, so as to solve the problems mentioned in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an automobile alternating current generator with amortization loop structure, including fixing the generator on the bottom plate, the internally mounted of generator has rectifier bridge support body, be connected with the amortization ring on the end cover at generator top, still including fixing the coolant tank on the bottom plate, coolant tank's top welding has the seal box, coolant tank's inside is formed with the aqua storage tank, the inside cavity that is linked together with the aqua storage tank that is formed with of seal box, the center department of this cavity rotates and is connected with the rotation axis, a plurality of rotor plates have been cup jointed to the ring shape on the periphery of rotation axis, every rotor plate all sets up with the inside seal of seal box, and every rotor plate homoenergetic is to disturbing to its inside coolant liquid when rotatory to the aqua storage tank, so that coolant liquid gets into the inside rotation of seal box, around being equipped with the circulating pipe on the outer wall of generator, the one end of circulating pipe extends to the inside of seal box, the other end of circulating pipe extends to the aqua storage tank, and the third check valve is installed to the one end that the circulating pipe is located the aqua storage tank, coolant liquid circulates at circulating pipe inside the circulating pipe forms the outside circulation cooling to generator, the outside of rectifier bridge support body and makes the outside circulation control generator and carry out the high-speed of cooling to the generator alone.

Preferably, the rotation of the rotating plate inside the sealed box is driven pneumatically.

Preferably, still be fixed with the cylinder on the bottom plate, be connected with the intake pipe between the one end of cylinder and the top of seal box to install the second check valve in this intake pipe, the inside sliding connection of cylinder has the piston, the center fixedly connected with piston rod of department of piston, the piston rod passes and articulates after the cylinder extends to its outside has the rocker, the motor shaft bottom fixedly connected with disc of generator, the edge of terminal surface is connected with the fixed axle under the disc, the end of rocker rotates to cup joint on this fixed axle.

Preferably, a cooling fan is arranged in the generator, and the cooling fan is fixedly sleeved on a motor shaft of the generator.

Preferably, the outer wall of the seal box is further provided with a pressure release valve communicated with the inside of the seal box, the pressure release valve is adjacent to the air outlet of the air inlet pipe, and the pressure release valve is distributed in the anticlockwise direction of the air outlet of the air inlet pipe.

Preferably, the water storage tank also comprises a first one-way valve connected with an external water storage tank, and the water storage tank injects cooling water into the water storage tank through the first one-way valve.

Preferably, first check valve is installed on the outer wall of seal box and is next to the relief valve, and the distribution that staggers of the axial of relief valve and first check valve along the seal box, and the one end that every rotor plate and seal box inner wall contacted all is connected with cowl, and cowl pastes and sliding connection with the inner wall of seal box mutually, and cowl rotates to the position department of relief valve and first check valve and separates both.

Preferably, the rotation axis is hollow structure, its inside rotates and is connected with the hollow tube, there are a plurality of through-holes on the rotation axis, the both ends of hollow tube are fixed in on the inner wall of seal box both sides, first check valve set up in one side central point of seal box put and with the hollow tube intercommunication in the rotation axis, the direction towards the aqua storage tank is equipped with a plurality of through-holes on the lateral wall of hollow tube, the inside cavity of rotor plate is formed with the feed liquor groove, the through-hole of seting up on the rotation axis corresponds the setting with the feed liquor groove, a plurality of liquid hole has been seted up with the position that the seal box inner wall was laminated to the end of rotor plate mutually.

A method of dissipating heat from an automotive alternator having a noise-damping ring structure as mentioned above, comprising: when the rotating shaft is driven to rotate at a low speed, the rotating plate stirs cooling liquid in the water storage tank to enter the sealed box to rotate clockwise, and when the cooling liquid reaches the liquid outlet of the circulating pipe, the cooling liquid flows out of the liquid outlet of the circulating pipe through the centrifugal force to cool the outside of the generator and then flows back into the water storage tank through the third one-way valve;

when the driving rotating shaft rotates at a high speed, one part of cooling liquid is stirred by the rotating plate to enter the sealing box and then enters the circulating pipe under the action of centrifugal force to cool the outside of the generator, the other part of cooling liquid enters the liquid inlet pipe under the action of the rotating plate at the bottom of the water storage tank, and the cooling liquid is sprayed to the rectifier bridge support body inside the generator through the spray head to be cooled.

Compared with the prior art, the invention provides the automobile alternating-current generator with the noise reduction ring structure and the heat dissipation method thereof, and the automobile alternating-current generator with the noise reduction ring structure has the following beneficial effects:

(1) When the generator works at a high speed, the cooling water in the water storage tank is stirred by the rotating plate to move towards the direction of the liquid inlet pipe, and liquid is sprayed out from the spray head through the liquid inlet pipe under the action of air pressure and the pressure of the rotating plate and the water to cool the inside of the generator and the rectifier bridge support body, and the external circulation cooling and the internal cooling of the cooling water are simultaneously carried out.

(2) The heat radiation fan is fixedly sleeved on a motor shaft of the motor, can cool the interior of the generator and the rectifier bridge support body by air cooling, and can be matched with cooling water for use, so that the cooling effect is better.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention in any way:

FIG. 1 is a schematic view of an overall structure of an alternator according to a first embodiment;

FIG. 2 is a schematic view of an assembly of the heat dissipation fan on the motor according to the first embodiment;

FIG. 3 is a schematic cross-sectional view of a cylinder according to the present invention;

FIG. 4 is a schematic view showing the arrangement of the rotating plates inside the sealing box according to the first embodiment;

FIGS. 5-7 are schematic views of the rotating plate in an operating state (different rotation angles) according to one embodiment;

FIG. 8 is a schematic view showing the overall structure of an alternator according to a second embodiment;

FIG. 9 is a schematic view showing an internal structure of an alternator according to a second embodiment;

FIG. 10 is a schematic view showing the arrangement of the rotating plates inside the sealing box according to the second embodiment;

FIGS. 11-13 are schematic views of the rotary plate in working states (different rotation angles) according to the second embodiment;

FIG. 14 is an enlarged view of a portion of FIG. 10 at A;

fig. 15 is a schematic view of a part of the enlarged structure at B in fig. 10.

In the figure: 1. a cooling water tank; 2. sealing the box; 3. an air inlet pipe; 4. a circulation pipe; 5. a liquid inlet pipe; 6. a sound deadening ring; 7. a generator; 8. a base plate; 9. a pressure relief valve; 10. a first check valve; 11. a rectifier bridge support body; 12. a heat radiation fan; 13. a disc; 14. a rocker; 15. a spray head; 16. a piston rod; 17. a cylinder; 18. a piston; 19. a second check valve; 20. a rotating plate; 21. a rotating shaft; 22. an arc-shaped baffle plate; 23. a third check valve; 24. a water storage tank; 25. a first chamber; 26. a second chamber; 27. a third chamber; 28. a fourth chamber; 29. a fifth chamber; 30. a sixth chamber; 31. a liquid inlet tank; 32. a liquid outlet hole; 33. a hollow pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1 to 7, the embodiment provides an automotive alternator with a noise reduction ring structure, including a generator 7 fixed on a bottom plate 8, a rectifier bridge bracket body 11 is installed inside the generator 7, and a noise reduction ring 6 is connected to an end cover on the top of the generator 7, so that the noise reduction ring 6 effectively reduces noise caused by the operation of the generator 7.

Be fixed with coolant tank 1 on the bottom plate 8, the welding of coolant tank 1's top has seal box 2, and coolant tank 1's inside is formed with aqua storage tank 24, and seal box 2's inside is formed with the cavity that is linked together with aqua storage tank 24, and the front and back width of aqua storage tank 24 is the same with seal box 2 inside front and back width.

The center of the cavity in the seal box 2 is rotatably connected with a rotating shaft 21, six rotating plates 20 are annularly sleeved on the circumferential surface of the rotating shaft 21, each rotating plate 20 is hermetically arranged in the seal box 2, and the six rotating plates 20 divide the interior of the seal box 2 into six chambers, namely a first chamber 25, a second chamber 26, a third chamber 27, a fourth chamber 28, a fifth chamber 29 and a sixth chamber 30. Every rotor plate 20 all can carry out the disturbance to its inside cooling water when rotatory to tank 24 to make cooling water get into the inside rotation of seal box 2, around being equipped with circulating pipe 4 on the outer wall of generator 7, the one end of circulating pipe 4 extends to the inside of seal box 2, the other end of circulating pipe 4 extends to in the tank 24, and circulating pipe 4 is located the one end of tank 24 and installs third check valve 23, cooling water circulates in circulating pipe 4 internal circulation and forms the external circulation cooling to generator 7, the bottom of tank 24 is connected with feed liquor pipe 5, the liquid outlet of feed liquor pipe 5 is connected with shower nozzle 15 after extending to generator 7 inside, cooling water spouts to rectifier bridge support body 11 formation through shower nozzle 15 and forms the internal cooling to generator 7, control rotation axis 21 low-speed rotation makes generator 7 carry out solitary external circulation cooling, control rotation axis 21 high-speed rotation makes generator 7 external circulation cooling and internal cooling carry out simultaneously.

The rotation of rotor plate 20 in seal box 2 is driven through pneumatic means, specifically, install cylinder 17 on bottom plate 8, be connected with intake pipe 3 between the one end of cylinder 17 and the top of seal box 2, and install second check valve 19 on this intake pipe 3, the inside sliding connection of cylinder 17 has piston 18, the center department fixedly connected with piston rod 16 of piston 18, piston rod 16 passes cylinder 17 and articulates after extending to its outside has rocker 14, the motor shaft bottom fixedly connected with disc 13 of generator 7, the edge of disc 13 lower extreme face is connected with the fixed axle, the end of rocker 14 rotates and cup joints on this fixed axle, motor shaft drive disc 13 through motor 7 rotates, disc 13 drives piston rod 16 reciprocating motion, piston 18 reciprocating motion in cylinder 17, compress the air in the cylinder 17, then make it pass through intake pipe 3 transmission and get into seal box 2 in, the impact force that gas formed to rotor plate 20 drives it and rotates in seal box 2 inside.

The inside of generator 7 is provided with radiator fan 12, and radiator fan 12 is fixed to be cup jointed on generator 7's motor shaft, and radiator fan 12 can carry out the forced air cooling to generator 7 inside and rectifier bridge support body 11, and it uses with the cooling water cooperation, can make the cooling effect better.

Still be provided with the relief valve 9 rather than inside being linked together on the outer wall of seal box 2, relief valve 9 is adjacent to the gas outlet of intake pipe 3 to relief valve 9 distributes in the counter-clockwise of intake pipe 3 gas outlet, in gaseous transmission 26 to the second chamber, atmospheric pressure increase in the second chamber 26, when rotor plate 20 is about to rotate a week, the second chamber 26 chamber rotates to the position where relief valve 9 is located, the atmospheric pressure in the second chamber 26 surpasss the threshold value that relief valve 9 set for, relief valve 9 is to its pressure release.

In this embodiment, a first check valve 10 is installed on a circumferential surface of a seal box 2, the water storage tank injects cooling water into a water storage tank 24 through the first check valve 10, the first check valve 10 is installed on an outer wall of the seal box 2 and is close to a pressure release valve 9, the pressure release valve 9 and the first check valve 10 are distributed in a staggered manner along an axial direction of the seal box 2, one end of each rotating plate 20, which is in contact with an inner wall of the seal box 2, is connected with an arc-shaped baffle 22, the arc-shaped baffle 22 is attached to and slidably connected with the inner wall of the seal box 2, the arc-shaped baffle 22 is rotated to the position of the pressure release valve 9 and the position of the first check valve 10 to separate the pressure release valve 9 and the first check valve 10, when the second chamber 26 reaches the position of the first check valve 10, cooling water can be added into the water storage tank 24 as required, since the air pressure is small after passing through the second chamber 26, the cooling water is sucked into the second chamber 26 through the first check valve 10, and the arc-shaped pressure release baffle 22 prevents the cooling water flowing in from the first check valve 10 from being sucked out when the pressure release 9.

This embodiment provides an automobile alternating current generator with amortization ring structure, and during operation, generator 7 begins to rotate, and radiator fan 12 synchronous rotation is to the inside air-cooled cooling of generator 7, and the motor shaft of generator 7 drives disc 13 and rotates, and disc 13 drives piston rod 16 reciprocating motion, and piston 18 reciprocating motion in cylinder 17 compresses the air in the cylinder 17, then makes it pass through intake pipe 3 transmission and get into in the seal box 2.

Gas enters one of the chambers. When the second chamber 26 is located at the air inlet pipe 3 and the air inlet opening as shown in fig. 5, the air is transmitted into the second chamber 26, and since the air inlet opening is directed to the lower right, the air entering the second chamber 26 gives an impact force to the rotating plate 20 on the right side of the second chamber 26, and the air pressure in the second chamber 26 increases, pressing the rotating plate 20 on the right side of the second chamber 26 to rotate clockwise, thereby rotating all the rotating plates 20.

As shown in fig. 6, the initial position of the cooling water in the water storage tank 24 is flush with the uppermost surface of the cooling water tank 1, and the rotary plate 20 rotates to stir the cooling water to rotate clockwise. When the rotating plate 20 is located between the water storage tanks 24, a part of the cooling water (located at the right side of the rotating plate 20 at the lowermost end, i.e., in the fourth cavity 28) flows back into the water storage tank 24, and another part of the cooling water (located at the left side of the rotating plate 20 at the lowermost end, i.e., in the fifth cavity 29) is rotated by the rotating plate 20.

Referring again to fig. 5, when the rotating plate 20 on the right side of the fifth chamber 29 is in contact with the inner wall of the sealed box 2, that is: when the fifth chamber 29 is rotated to the position of the sixth chamber 30 shown in fig. 5, the cooling water (in the fifth chamber 29) cannot flow back, the rotating plate 20 continues to drive the cooling water to rotate, when reaching the liquid outlet of the circulating pipe 4, the cooling water flows out from the liquid outlet of the circulating pipe 4 through centrifugal force, and part of the liquid continues to rotate along with the rotating plate 20 until the liquid enters the water storage tank 24 when rotating to the position of the water storage tank 24 again. The cooling water flowing out from the circulation pipe 4 cools the outside of the generator 7 and then flows into the water storage tank 24 through the third check valve 23, the cooling water circulates in and out through the circulation pipe 4, and the third check valve 23 prevents the cooling water from flowing out from the water storage tank 24.

As shown in fig. 7, when the rotating plate 20 is about to rotate for one revolution, the chamber of the second chamber 26 rotates to the position of the relief valve 9, the air pressure in the second chamber 26 exceeds the threshold set by the relief valve 9, the relief valve 9 relieves the pressure, and the rotating plate 20 continues to rotate. The second chamber 26 reaches the position of the first one-way valve 10, cooling water can be added into the water storage tank 24 as required, the cooling water is sucked into the second chamber 26 through the first one-way valve 10 due to the fact that the pressure relief air pressure in the second chamber 26 is small, and the arc-shaped baffle plate 22 prevents liquid flowing in from the first one-way valve 10 from being sucked out when the pressure relief valve 9 relieves the pressure. At this time, the third chamber 27 rotates to the air outlet position of the air inlet pipe 3, and the third chamber 27 starts to supply air to continue rotating the rotating plate 20.

The generator 7 is operated all the time, causing the rotating plate 20 to rotate all the time. When the generator 7 rotates slowly, the reciprocating speed of the piston 18 is slow, the compressed gas speed is slow, the rotating plate 20 rotates slowly, and only air cooling and external cooling are needed for cooling the generator 7.

When the rotating speed of the generator 7 is accelerated, the rotating speed of the rotating plate 20 is also accelerated, and after the rotating plate reaches a certain speed, by taking a picture 5 as an example, the rotating plate 20 stirs part of cooling water to move towards the direction of the liquid inlet pipe 5, and the liquid is subjected to the pressure of air pressure, the rotating plate 20 and the water, so that part of the cooling water flows out from the liquid inlet pipe 5 and is sprayed out through the spray head 15 to cool the inside of the generator 7 and the rectifier bridge support body 11, and the external circulation cooling and the internal cooling of the cooling water are performed simultaneously. When not in use, the nozzle 15 can prevent the cooling water in the water storage tank 24 from flowing out along the water pipe, and the waste of the cooling water is avoided.

Example two

Referring to fig. 3 and fig. 8 to 15, the present embodiment provides an automotive alternator with a noise reduction ring structure, which adopts the same inventive concept as the first embodiment, and is different from the first embodiment in that: the rotating shaft 21 in this embodiment is a hollow structure, the interior of the rotating shaft 21 is rotatably connected with a hollow tube 33, the rotating shaft 21 is provided with a plurality of through holes, two ends of the hollow tube 33 are fixed on the inner walls of two sides of the sealed box 2, and the first check valve 10 in this embodiment is arranged at the center of one side of the sealed box 2 and is communicated with the hollow tube 33 in the rotating shaft 21. A plurality of through holes are formed in the side wall of the hollow pipe 33 in the direction towards the water storage tank 24, a liquid inlet tank 31 is formed in the hollow rotating plate 20, the through holes formed in the rotating shaft 21 correspond to the liquid inlet tank 31, and a plurality of liquid outlet holes 32 are formed in the joint part of the tail end of the rotating plate 20 and the inner wall of the seal box 2. When rotor plate 20 and seal box 2 sealing contact, go out liquid hole 32 and be stopped up, and the cooling water can't be thrown away from rotor plate 20 in, goes out liquid hole 32 and avoids the setting of 3 air inlets of intake pipe, produces the noise when preventing that gas from entering into feed liquor groove 31 through going out liquid hole 32.

When the rotating plate 20 is about to rotate for one circle, the chamber of the second chamber 26 rotates to the position where the pressure release valve 9 is located, the air pressure in the second chamber 26 exceeds the threshold set by the pressure release valve 9, the pressure release valve 9 releases the pressure, at this time, the third chamber 27 rotates to the air outlet position of the air inlet pipe 3, and the third chamber 27 starts to admit air to enable the rotating plate 20 to continue to rotate. At this time, cooling water can be added into the water storage tank 24 according to the requirement, the cooling water flows into the hollow pipe 33 through the first one-way valve 10, when the through hole in the rotating shaft 21 corresponds to the through hole in the hollow pipe 33, the cooling water flows into the rotating plate 20 through the through hole on the rotating shaft 21, and when the rotating plate 20 rotates into the water storage tank 24, the cooling water flows into the water storage tank 24 from the liquid outlet hole 32 of the rotating plate 20.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides an automobile alternating current generator with amortization ring structure, is including fixing generator (7) on bottom plate (8), and the internally mounted of generator (7) has rectifier bridge support body (11), is connected with amortization ring (6), its characterized in that on the end cover at generator (7) top: the cooling water tank comprises a bottom plate (8) and a cooling water tank (1) fixed on the bottom plate (8), a seal box (2) is welded at the top of the cooling water tank (1), a water storage tank (24) is formed inside the cooling water tank (1), a cavity communicated with the water storage tank (24) is formed inside the seal box (2), a rotating shaft (21) is rotatably connected to the center of the cavity, a plurality of rotating plates (20) are annularly sleeved on the circumferential surface of the rotating shaft (21), each rotating plate (20) is hermetically arranged with the inside of the seal box (2), and when each rotating plate (20) rotates to the water storage tank (24), the cooling liquid inside the rotating plate (20) can be disturbed, so that the cooling liquid enters the sealing box (2) to rotate, a circulating pipe (4) is wound on the outer wall of the generator (7), one end of the circulating pipe (4) extends to the inside of the sealing box (2), the other end of the circulating pipe (4) extends to the water storage tank (24), a third one-way valve (23) is installed at one end, located at the water storage tank (24), of the circulating pipe (4), the cooling liquid circulates in the circulating pipe (4) to form external circulation cooling for the generator (7), a liquid inlet pipe (5) is connected to the bottom of the water storage tank (24), a liquid outlet of the liquid inlet pipe (5) extends to the inside of the generator (7) and then is connected with a spray head (15), the cooling liquid is sprayed to the rectifier bridge bracket body (11) through the spray head (15) to form internal cooling on the generator (7), the rotating shaft (21) is controlled to rotate at a low speed to enable the generator (7) to perform independent external circulation cooling, and the rotating shaft (21) is controlled to rotate at a high speed to enable the external circulation cooling and the internal cooling of the generator (7) to be performed simultaneously;

the outer wall of the seal box (2) is also provided with a pressure release valve (9) communicated with the interior of the seal box, the pressure release valve (9) is adjacent to the air outlet of the air inlet pipe (3), and the pressure release valve (9) is distributed in the anticlockwise direction of the air outlet of the air inlet pipe (3);

the water storage tank is characterized by further comprising a first one-way valve (10) connected with an external water storage tank, and cooling water is injected into the water storage tank (24) through the first one-way valve (10).

2. The automotive alternator with noise damping ring structure as set forth in claim 1, wherein: the rotation of the rotary plate (20) in the sealed box (2) is driven pneumatically.

3. The automotive alternator with noise damping ring structure as set forth in claim 2, wherein: still be fixed with cylinder (17) on bottom plate (8), be connected with intake pipe (3) between the one end of cylinder (17) and the top of seal box (2), and install second check valve (19) on this intake pipe (3), the inside sliding connection of cylinder (17) has piston (18), fixedly connected with piston rod (16) are located to the center of piston (18), piston rod (16) pass cylinder (17) and extend to and articulate after its outside has rocker (14), motor shaft bottom fixedly connected with disc (13) of generator (7), the edge of terminal surface is connected with the fixed axle under disc (13), the end of rocker (14) is rotated and is cup jointed on this fixed axle.

4. The automotive alternator with noise dampening ring structure as set forth in claim 3, wherein: a cooling fan (12) is arranged in the generator (7), and the cooling fan (12) is fixedly sleeved on a motor shaft of the generator (7).

5. The automotive alternator with noise damping ring structure as set forth in claim 1, wherein: first check valve (10) are installed on the outer wall of seal box (2) and are next to relief valve (9), the distribution of staggering of axial along seal box (2) is followed in relief valve (9) and first check valve (10), the one end that every rotor plate (20) and seal box (2) inner wall contacted all is connected with cowl (22), cowl (22) pastes mutually and sliding connection with the inner wall of seal box (2), cowl (22) rotate the position department to relief valve (9) and first check valve (10) and separate both.

6. The automotive alternator with noise damping ring structure as set forth in claim 5, wherein: rotation axis (21) is hollow structure, its inside is rotated and is connected with hollow tube (33), there are a plurality of through-holes on rotation axis (21), the both ends of hollow tube (33) are fixed in on seal box (2) both sides inner wall, first check valve (10) set up in one side central point of seal box (2) put and with hollow tube (33) intercommunication in rotation axis (21), the direction towards aqua storage tank (24) is equipped with a plurality of through-holes on the lateral wall of hollow tube (33), the inside cavity of rotor plate (20) is formed with feed liquor groove (31), the through-hole of seting up on rotation axis (21) corresponds the setting with feed liquor groove (31), a plurality of play liquid hole (32) have been seted up with the position that seal box (2) inner wall laminated mutually to the end of rotor plate (20).

7. A method of dissipating heat from an automotive alternator having a noise-canceling ring structure as set forth in any one of claims 1 to 6, wherein:

when the rotating shaft (21) is driven to rotate at a low speed, the rotating plate (20) stirs cooling liquid in the water storage tank (24) to enter the sealing box (2) to rotate clockwise, and when the cooling liquid reaches the liquid outlet of the circulating pipe (4), the cooling liquid flows out from the liquid outlet of the circulating pipe (4) through the centrifugal force effect to cool the outside of the generator (7), and then flows back into the water storage tank (24) through the third one-way valve (23);

when the rotating shaft (21) is driven to rotate at a high speed, one part of cooling liquid is stirred by the rotating plate (20) to enter the sealing box (2) and enter the circulating pipe (4) to cool the outside of the generator (7) under the action of centrifugal force, the other part of cooling liquid enters the liquid inlet pipe (5) under the action of the rotating plate (20) at the bottom of the water storage tank (24), and the cooling liquid is finally sprayed onto the rectifier bridge support body (11) inside the generator (7) through the spray nozzle (15) to be cooled.