An electronically controlled silicone oil clutch water pump assembly

Abstract

An electronically controlled silicone oil clutch water pump assembly includes a base shell, a rotating shaft, a transmission wheel, and a silicone oil clutch. The transmission wheel is rotatably connected to the rotating shaft. The silicone oil clutch includes a driving disc and a driven disc. There is a clutch oil chamber between the driving disc and the driven disc. An oil storage chamber is provided inside the transmission wheel. The driven disc is provided with an oil inlet hole for introducing the oil in the oil storage chamber into the clutch oil chamber and an oil return hole for introducing the oil in the clutch oil chamber into the oil storage chamber. The driven disc is connected with a fixed magnetic claw pole and a rotatable valve claw pole. The base shell is provided with an electromagnetic coil group for driving the valve claw pole to rotate forward relative to the fixed magnetic claw pole. The driven disc is provided with a torsion spring for pushing the valve claw pole to rotate backward relative to the fixed magnetic claw pole. The valve claw pole is provided with a valve plate, and the valve plate is used to open and close the oil return hole as the valve claw pole rotates. The above solution operates reliably, realizes stepless speed regulation of the rotating shaft, enables the impeller to work as required, and ultimately achieves the purpose of energy conservation, emission reduction, and engine protection.

Description

Technical Field

[0001] The present invention relates to the technical field of silicone oil clutch water pumps, and particularly relates to an electronically controlled silicone oil clutch water pump assembly. Background Art

[0002] Traditional automotive power units mainly refer to gasoline engines and diesel engines. Under the grand goal of "dual carbon", higher requirements are put forward for energy conservation and emission reduction. In recent years, the electrification trend of small cars has developed rapidly. However, in the commercial vehicle field, traditional power is still dominant at present, and it is difficult to achieve mass production of electrification for a while. Therefore, commercial vehicles face a more urgent task of energy conservation and emission reduction, and how to achieve energy conservation for the engine is the goal pursued by some vehicle manufacturers and engine manufacturers.

[0003] Traditional engine cooling water pumps are mostly directly connected to the engine gear train. The engine speed changes rapidly, which will cause the impeller speed of the cooling water pump to change rapidly accordingly, and then the water pump flow rate changes rapidly. This is likely to cause the engine to be alternately cold and hot. When the engine is too cold, carbon deposition is likely to occur, causing certain damage to the engine. Summary of the Invention

[0004] The purpose of the present invention is to provide a continuously variable transmission that can be realized for the engine cooling water pump, so that it works as required, achieving the purpose of energy conservation, emission reduction and engine protection.

[0005] To solve the above problems, the present invention provides an electronically controlled silicone oil clutch water pump assembly, including a base shell, a rotating shaft inserted into the base shell, and a transmission wheel and a silicone oil clutch sleeved on the rotating shaft. The transmission wheel is rotatably connected to the rotating shaft. The silicone oil clutch includes a driving disk connected to the transmission wheel and a driven disk connected to the rotating shaft. There is a clutch oil cavity between the driving disk and the driven disk. There is an oil storage cavity in the transmission wheel. The driven disk is provided with an oil inlet hole for introducing the oil in the oil storage cavity into the clutch oil cavity and an oil return hole for introducing the oil in the clutch oil cavity into the oil storage cavity. The driven disk is connected with a fixed magnetic claw pole and a rotatable valve claw pole. Both the fixed magnetic claw pole and the valve claw pole are made of magnetic conductive materials and are arranged opposite to each other. The base shell is provided with an electromagnetic coil group for driving the valve claw pole to rotate forward relative to the fixed magnetic claw pole. The driven disk is provided with a torsion spring for pushing the valve claw pole to rotate backward relative to the fixed magnetic claw pole. The valve claw pole is provided with a valve plate, and the valve plate is used to open and close the oil return hole as the valve claw pole rotates.

[0006] In the above solution, the rotating shaft is connected to the impeller as needed to drive the rotation of the impeller. The rotational speed of the impeller corresponds to the flow rate of the water pump. Both the oil storage chamber and the clutch oil chamber are filled with oil. In the initial state, the torsion spring pushes the valve claw pole to reverse extremely, causing the valve plate to close the oil return hole. When the driving wheel rotates, the oil in the oil storage chamber will flow into the clutch oil chamber through the oil inlet hole. The driven disk rotates with the driving disk due to the adhesion force of the oil in the clutch oil chamber. Then, the rotating shaft rotates driven by the driven disk, and finally drives the rotation of the impeller. When the rotational speed of the impeller is too high, the electromagnetic coil group is energized. The valve claw pole rotates forward relative to the fixed magnetic claw pole due to the magnetic field effect, and the valve plate disengages from the oil return hole, opening the oil return hole. The oil in the clutch oil chamber flows into the oil storage chamber through the oil return hole, reducing the adhesion force between the driven disk and the driving disk. The driven disk and the rotating shaft drop to the required rotational speed. Compared with the prior art, the above solution operates reliably. The stepless speed regulation of the rotating shaft is achieved through the coordinated operation of the electromagnetic coil group, the fixed magnetic claw pole, the valve claw pole, and the silicone oil clutch, enabling the impeller to work as needed, and ultimately achieving the purpose of energy conservation, emission reduction, and engine protection.

[0007] A flow guiding member is provided on one side of the driven disk facing the oil storage chamber. The flow guiding member includes a first end and a second end arranged along the rotation direction of the driving wheel. The first end is provided with an opening, and the second end communicates with the oil inlet hole. Thus, when the driving wheel rotates, the oil in the oil storage chamber can smoothly enter the opening of the flow guiding member, and after passing through the second end of the flow guiding member, it is squeezed into the oil inlet hole and finally enters the clutch oil chamber.

[0008] Preferably, the oil inlet hole includes a first hole section axially communicating with the clutch oil chamber and a second hole section radially communicating with the side surface of the driven disk. The flow guiding member is U-shaped and connected to the side surface of the driven disk. The second end of the flow guiding member communicates with the second hole section. The linear velocity of the side surface of the driven disk is relatively large. Arranging the flow guiding member on the side surface of the driven disk can enable the oil in the oil storage chamber to enter the oil inlet hole faster, with a more rapid response.

[0009] Preferably, the oil return hole includes a first return hole. One end of the first return hole communicates with the clutch oil chamber and the other end communicates with the oil storage chamber, so that the oil in the clutch oil chamber can directly flow into the oil storage chamber through the first return hole.

[0010] Preferably, the oil return hole further includes a second return hole. One end of the second return hole communicates with the second hole section and the other end communicates with the oil storage chamber, so that the oil flowing into the second hole section of the oil inlet hole can directly flow into the oil storage chamber from the second return hole.

[0011] Preferably, both the fixed magnetic claw pole and the valve claw pole are annular, and claw pole portions which are convex and distributed circumferentially are provided on the opposite sides of the fixed magnetic claw pole and the valve claw pole. Therefore, when the electromagnetic coil group is energized, due to the action of the claw pole portions of the valve claw pole and the fixed magnetic claw pole, the valve claw pole can rotate relative to the fixed magnetic claw pole more stably.

[0012] Preferably, the electromagnetic coil group includes a coil ring and a magnetic shielding ring. The coil ring is connected to the base shell and arranged around the rotating shaft. The magnetic shielding ring is connected to the transmission wheel. The magnetic shielding ring is located on the side of the coil ring facing the valve claw pole. The diameter of the magnetic shielding ring is between the diameter of the fixed magnetic claw pole and the diameter of the valve claw pole. The magnetic shielding ring is used to block the middle part of the magnetic field generated after the coil ring is energized, so that the fixed magnetic claw pole and the valve claw pole can be magnetized better.

[0013] Preferably, a rotational speed sensor is provided on the base shell, and an induction ring is sleeved on the rotating shaft. The detection end of the rotational speed sensor faces the induction ring, so that the rotational speed of the rotating shaft can be detected in real time, which is convenient for feedback adjustment.

[0014] Preferably, mutually staggered labyrinth grooves are provided on the opposite sides of the driving disk and the driven disk. The clutch oil cavity is located between the labyrinth grooves of the driving disk and the driven disk. The arrangement of the labyrinth grooves can effectively increase the adhesion force between the driving disk and the driven disk.

[0015] Preferably, a convex limiting column is provided on the side of the driven disk facing the valve claw pole, and an arc-shaped long groove is provided on the valve claw pole. The limiting column is slidably inserted into the long groove, so as to limit the valve claw pole and prevent the valve claw pole from rotating excessively. Description of the Drawings

[0016] Figure 1 is a front view schematic diagram of an electronically controlled silicone oil clutch water pump assembly;

[0017] Figure 2 is along Figure 1 the sectional view schematic diagram taken along the section line A-A in

[0018] Figure 3 is a schematic diagram of the driven disk of an electronically controlled silicone oil clutch water pump assembly;

[0019] Figure 4 is a rear view schematic diagram of the driven disk of an electronically controlled silicone oil clutch water pump assembly;

[0020] Figure 5 is Figure 4 the sectional view schematic diagram taken along the section line B-B in

[0021] Figure 6 is a schematic diagram of an electronically controlled silicone oil clutch water pump assembly with the driving disk hidden;

[0022] Figure 7 It is a schematic diagram of an electronically controlled silicone oil clutch water pump assembly with the driving disc and the base shell hidden;

[0023] Figure 8 It is a front view schematic diagram of an electronically controlled silicone oil clutch water pump assembly with the driving disc and the base shell hidden.

[0024] Description of the reference numerals in the drawings,

[0025] 1. Base shell; 110. Installation groove; 2. Rotating shaft; 3. Driving wheel; 310. Oil storage cavity; 4. Silicone oil clutch; 410. Driving disc; 420. Driven disc; 421. Oil inlet hole; 421a. First hole section; 421b. Second hole section; 422. Oil return hole; 422a. First return hole; 422b. Second return hole; 423. Limit post; 430. Clutch oil cavity; 440. Flow guiding part; 441. Opening; 450. Labyrinth groove; 5. Electromagnetic coil group; 510. Coil ring; 520. Magnetic shielding ring; 6. Fixed magnetic claw pole; 610. Claw pole part; 620. Guide groove; 7. Valve claw pole; 710. Valve plate; 720. Long groove; 8. Torsion spring; 9. Rotational speed sensor; 910. Induction ring. Detailed implementation manners

[0026] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description will be given to the specific embodiments of the present invention with reference to the accompanying drawings. 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. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. In addition, it should be noted that all the directional indications (such as up, down, left, right, front, back, inside, outside) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0027] Please refer to Figures 1-8, an electronically controlled silicone oil clutch water pump assembly provided by an embodiment of the present invention includes a base shell 1, a rotating shaft 2 inserted on the base shell 1, and a driving wheel 3 and a silicone oil clutch 4 sleeved on the rotating shaft 2. The driving wheel 3 is rotatably connected to the rotating shaft 2. The silicone oil clutch 4 includes a driving disk 410 connected to the driving wheel 3 and a driven disk 420 connected to the rotating shaft 2. A clutch oil cavity 430 is provided between the driving disk 410 and the driven disk 420. An oil storage cavity 310 is provided in the driving wheel 3. The driven disk 420 is provided with an oil inlet hole 421 for introducing the oil in the oil storage cavity 310 into the clutch oil cavity 430 and an oil return hole 422 for introducing the oil in the clutch oil cavity 430 into the oil storage cavity 310. The driven disk 420 is connected with a fixed magnetic claw pole 6 and a rotatable valve claw pole 7. Both the fixed magnetic claw pole 6 and the valve claw pole 7 are made of magnetic conductive materials and are arranged opposite to each other. The base shell 1 is provided with an electromagnetic coil group 5 for driving the valve claw pole 7 to rotate forward relative to the fixed magnetic claw pole 6. The driven disk 420 is provided with a torsion spring 8 for pushing the valve claw pole 7 to rotate backward relative to the fixed magnetic claw pole 6. The valve claw pole 7 is provided with a valve plate 710, and the valve plate 710 is used for opening and closing the oil return hole 422 as the valve claw pole 7 rotates.

[0028] In the above solution, the rotating shaft 2 is connected to the impeller as needed to drive the rotation of the impeller, and the impeller speed corresponds to the flow rate of the water pump. The driving wheel 3 is preferably a belt wheel and rotates driven by the engine; both the oil storage cavity 310 and the clutch oil cavity 430 are filled with oil, and spare spaces are left in both the oil storage cavity 310 and the clutch oil cavity 430 for the oil to flow between the oil storage cavity 310 and the clutch oil cavity 430. The torsion spring 8 is located in the oil storage cavity 310. One end of the torsion spring 8 is connected to the driven disk 420, and the other end of the torsion spring 8 is connected to the valve claw pole 7; in the initial state, the torsion spring 8 pushes the valve claw pole 7 to rotate backward so that the valve plate 710 closes the oil return hole 422. When the driving wheel 3 rotates, the oil in the oil storage cavity 310 will flow into the clutch oil cavity 430 through the oil inlet hole 421. The driven disk 420 rotates together with the driving disk 410 due to the adhesion force of the oil in the clutch oil cavity 430. Then the rotating shaft 2 rotates driven by the driven disk 420, and finally drives the rotation of the impeller; when the impeller speed is too high, the electromagnetic coil group 5 is powered on, and the valve claw pole 7 rotates forward relative to the fixed magnetic claw pole 6 due to the magnetic field effect, and the valve plate 710 disengages from the oil return hole 422 so that the oil return hole 422 is opened. The oil in the clutch oil cavity 430 flows into the oil storage cavity 310 through the oil return hole 422, and the adhesion force between the driven disk 420 and the driving disk 410 decreases, and the driven disk 420 and the rotating shaft 2 drop to the required speed. It should be understood that in the initial state, it can also be set that the torsion spring 8 pushes the valve claw pole 7 to rotate backward so that the valve plate 710 opens the oil return hole 422, and when the valve claw pole 7 rotates forward relative to the fixed magnetic claw pole 6 due to the magnetic field effect, the valve plate 710 covers the oil return hole 422 so that the oil return hole 422 is closed.

[0029] Compared with the prior art, the above solution operates reliably. Through the coordinated operation of the electromagnetic coil group 5, the fixed magnetic claw pole 6, the valve claw pole 7, and the silicone oil clutch 4, stepless speed regulation of the rotating shaft 2 is achieved, enabling the impeller to work as required, and ultimately achieving the purpose of energy conservation, emission reduction, and engine protection.

[0030] In this embodiment, a flow guiding member 440 is provided on the side of the driven disk 420 facing the oil storage chamber 310. The flow guiding member 440 includes a first end and a second end arranged along the rotation direction of the driving wheel 3. The first end is provided with an opening 441, and the second end communicates with the oil inlet hole 421. Thus, when the driving wheel 3 rotates, the oil in the oil storage chamber 310 can smoothly enter the opening 441 of the flow guiding member 440, and after passing through the second end of the flow guiding member 440, it is squeezed into the oil inlet hole 421 and finally enters the clutch oil chamber 430. Further, the oil inlet hole 421 includes a first hole section 421a axially communicating with the clutch oil chamber 430 and a second hole section 421b radially communicating with the side surface of the driven disk 420. The flow guiding member 440 is U-shaped and integrally connected to the side surface of the driven disk 420. The second end of the flow guiding member 440 communicates with the second hole section 421b. The linear velocity of the side surface of the driven disk 420 is relatively large. Arranging the flow guiding member 440 on the side surface of the driven disk 420 can enable the oil in the oil storage chamber 310 to enter the oil inlet hole 421 faster and respond more quickly.

[0031] In this embodiment, the oil return hole 422 includes a first return hole 422a. One end of the first return hole 422a communicates with the clutch oil chamber 430 and the other end communicates with the oil storage chamber 310, so that the oil in the clutch oil chamber 430 can directly flow into the oil storage chamber 310 through the first return hole 422a. Further, the oil return hole 422 further includes a second return hole 422b. One end of the second return hole 422b communicates with the second hole section 421b and the other end communicates with the oil storage chamber 310, so that the oil flowing into the second hole section 421b of the oil inlet hole 421 can directly flow into the oil storage chamber 310 from the second return hole 422b.

[0032] In this embodiment, both the fixed magnetic claw pole 6 and the valve claw pole 7 are annular, and the diameter of the fixed magnetic claw pole 6 is greater than that of the valve claw pole 7, so that the fixed magnetic claw pole 6 is located outside the valve claw pole 7. The valve claw pole 7 is coaxially arranged relative to the driving wheel 3, and the fixed magnetic claw pole 6 is coaxially arranged relative to the driven disk 420. The inner ring side of the fixed magnetic claw pole 6 is provided with claw pole parts 610 protruding and distributed circumferentially, and the outer ring side of the valve claw pole 7 is provided with claw pole parts 610 protruding and distributed circumferentially. Thus, when the electromagnetic coil group 5 is energized to generate a magnetic field, due to the magnetic conduction interaction between the claw pole parts 610 of the valve claw pole 7 and the claw pole parts 610 of the fixed magnetic claw pole 6, the valve claw pole 7 can rotate more stably relative to the fixed magnetic claw pole 6. In this embodiment, the valve plate 710 is welded to the end of the valve claw pole 7 facing the driven disk 420, and the end of the fixed magnetic claw pole 6 facing the driven disk 420 is provided with a guide groove 620 for the valve plate 710 to slide and abut against. The guide groove 620 is used to support the valve plate 710 to ensure that the valve plate 710 can more firmly close the oil return hole 422. Considering that the oil return hole 422 in this embodiment includes a first return hole 422a and a second return hole 422b, two valve plates 710 are connected to the valve claw pole 7 to respectively block the first return hole 422a and the second return hole 422b. Of course, the two valve plates 710 can also be arranged integrally.

[0033] In this embodiment, the electromagnetic coil group 5 includes a coil ring 510 and a magnetic shielding ring 520. The base shell 1 is provided with an annular installation groove 110. The coil ring 510 is connected in the installation groove 110 of the base shell 1 and is arranged around the rotating shaft 2. The magnetic shielding ring 520 is made of non-magnetic stainless steel, and the magnetic shielding ring 520 is connected to the driving wheel 3 and rotates with the driving wheel 3. The magnetic shielding ring 520 is located on the side of the coil ring 510 facing the valve claw pole 7, and the diameter of the magnetic shielding ring 520 is between the diameter of the fixed magnetic claw pole 6 and the diameter of the valve claw pole 7. The magnetic shielding ring 520 is used to block the middle part of the magnetic field generated after the coil ring 510 is energized, so that the fixed magnetic claw pole 6 and the valve claw pole 7 can be magnetized better.

[0034] As an extension of the above embodiment, the base shell 1 is provided with a rotational speed sensor 9. The rotational speed sensor 9 is preferably a Hall rotational speed sensor 9. An induction ring 910 is sleeved on the rotating shaft 2, and the detection end of the rotational speed sensor 9 faces the induction ring 910, so as to be able to detect the rotational speed of the rotating shaft 2 in real time for feedback adjustment.

[0035] In this embodiment, the opposite sides of the driving disk 410 and the driven disk 420 are both provided with interlaced labyrinth grooves 450. The clutch oil cavity 430 is located between the labyrinth grooves 450 of the driving disk 410 and the driven disk 420. The setting of the labyrinth grooves 450 can effectively increase the adhesion between the driving disk 410 and the driven disk 420.

[0036] In this embodiment, a protruding limiting post 423 is provided on one side of the transmission wheel 3 facing the valve claw pole 7, and an arc-shaped long slot 720 is provided on the valve claw pole 7. The limiting post 423 is slidably inserted into the long slot 720, so as to limit the valve claw pole 7 and prevent the valve claw pole 7 from rotating excessively.

[0037] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. For those skilled in the art, various changes and modifications can be made without departing from the spirit and scope of the present disclosure, and these changes and modifications will all fall within the protection scope of the invention.

Claims

1. An electronically controlled silicone oil clutch water pump assembly, characterized in that, It includes a base housing (1), a rotating shaft (2) inserted on the base housing (1), a transmission wheel (3) and a silicone oil clutch (4) sleeved on the rotating shaft (2). The transmission wheel (3) is rotatably connected to the rotating shaft (2). The silicone oil clutch (4) includes a driving disk (410) connected to the transmission wheel (3) and a driven disk (420) connected to the rotating shaft (2). A clutch oil chamber (430) is provided between the driving disk (410) and the driven disk (420). An oil storage chamber (310) is provided in the transmission wheel (3). The driven disk (420) is provided with an oil inlet hole (421) for introducing the oil in the oil storage chamber (310) into the clutch oil chamber (430) and an oil return hole (422) for introducing the oil in the clutch oil chamber (430) into the oil storage chamber (310). The driven disk (420) is connected with a fixed magnetic claw pole (6) and a rotatable valve claw pole (7). The fixed magnetic claw pole (6) and the valve claw pole (7) are both made of magnetic conductive materials and are arranged opposite to each other. The base housing (1) is provided with an electromagnetic coil group (5) for driving the valve claw pole (7) to rotate forward relative to the fixed magnetic claw pole (6). The driven disk (420) is provided with a torsion spring (8) for pushing the valve claw pole (7) to rotate backward relative to the fixed magnetic claw pole (6). The valve claw pole (7) is provided with a valve plate (710), and the valve plate (710) is used to open and close the oil return hole (422) as the valve claw pole (7) rotates; Both the fixed magnetic claw pole (6) and the valve claw pole (7) are annular, and the diameter of the fixed magnetic claw pole (6) is larger than that of the valve claw pole (7), so that the fixed magnetic claw pole (6) is located outside the valve claw pole (7). The opposite sides of the fixed magnetic claw pole (6) and the valve claw pole (7) are both provided with claw pole parts (610) protruding and distributed circumferentially; The electromagnetic coil group (5) includes a coil ring (510) and a magnetic shielding ring (520). The coil ring (510) is connected to the base housing (1) and is arranged around the rotating shaft (2). The magnetic shielding ring (520) is connected to the transmission wheel (3). The magnetic shielding ring (520) is located on the side of the coil ring (510) facing the valve claw pole (7). The diameter of the magnetic shielding ring (520) is between the diameter of the fixed magnetic claw pole (6) and the diameter of the valve claw pole (7); On the side of the driven disk (420) facing the valve claw pole (7), there is a protruding limit post (423). The valve claw pole (7) is provided with an arc-shaped long slot (720), and the limit post (423) is slidably inserted into the long slot (720).

2. The electric control silicone oil clutch water pump assembly according to claim 1, characterized in that, On the side of the driven disk (420) facing the oil storage chamber (310), there is a flow guiding member (440). The flow guiding member (440) includes a first end and a second end arranged along the rotation direction of the transmission wheel (3). The first end is provided with an opening (441), and the second end is communicated with the oil inlet hole (421).

3. The electronically controlled silicone oil clutch water pump assembly according to claim 2, wherein The oil inlet hole (421) includes a first hole section (421a) axially communicating with the clutch oil chamber (430) and a second hole section (421b) radially communicating with the side surface of the driven disk (420). The flow guide member (440) is U-shaped and connected to the side surface of the driven disk (420), and the second end of the flow guide member (440) communicates with the second hole section (421b).

4. The electronically controlled silicone oil clutch water pump assembly according to claim 3, characterized in that, The oil return hole (422) includes a first return hole (422a). One end of the first return hole (422a) communicates with the clutch oil chamber (430) and the other end communicates with the oil storage chamber (310).

5. The electric control silicone oil clutch water pump assembly according to claim 4, wherein The oil return hole (422) further includes a second return hole (422b). One end of the second return hole (422b) communicates with the second hole section (421b) and the other end communicates with the oil storage chamber (310).

6. An electronically controlled silicone oil clutch water pump assembly according to any one of claims 1-5, characterized in that, The base housing (1) is provided with a rotational speed sensor (9). An induction ring (910) is sleeved on the rotating shaft (2), and the detection end of the rotational speed sensor (9) is arranged facing the induction ring (910).

7. An electronically controlled silicone oil clutch water pump assembly according to any one of claims 1-5, characterized in that, Interleaved labyrinth grooves (450) are provided on the opposite sides of the driving disk (410) and the driven disk (420). The clutch oil chamber (430) is located between the labyrinth grooves (450) of the driving disk (410) and the driven disk (420).

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