Iron core component and safety type electromagnetic water pump thereof

Abstract

The utility model provides an iron core part and a safety type electromagnetic water pump thereof, and belongs to the technical field of engine cooling water pumps, a second magnetic pole is arranged around a first magnetic pole, an electromagnetic coil is arranged between the first magnetic pole and the second magnetic pole, and a magnetic resistance ring is further arranged between the first magnetic pole and the second magnetic pole; a magnetic conductive ring is arranged on the iron core support, and the magnetic conductive ring is in magnetic conductive connection with the first magnetic pole or the second magnetic pole. A permanent magnet ring is arranged between the iron core bracket and the first magnetic pole or the second magnetic pole; the iron core component does not need an internal fixing disc and a plurality of fan-shaped permanent magnets, the number of parts is smaller, and assembly is more convenient; only one permanent magnet is added to the arranged iron core component compared with an iron core component of a common electromagnetic water pump, the thickness of one permanent magnet is increased in the space in the axial direction, space does not need to be increased in the radial direction, and the electromagnetic water pump is simple in mechanism, compact in size, simple in part machining and assembling and composed of components low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of engine cooling water pumps, and specifically, to an iron core component and a safety electromagnetic water pump thereof. Background Art

[0002] The internal combustion engine cooling water pump directly obtains power by being connected to the engine power output shaft through a belt. After obtaining power, the belt drives the water pump pulley, which in turn drives the water pump shaft and the impeller fixed on the water pump shaft to rotate, realizing the reciprocating circulation of the coolant to cool the engine. Among them, the optimal working temperature of the engine is between 85°C and 105°C. When the engine working temperature has not reached the predetermined temperature, the synchronous operation of the water pump impeller with the engine will waste the mechanical energy of the engine, increase the time for the engine water temperature to rise, and thus lead to an increase in the warm-up time, poor lubricating oil fluidity, increased wear, poor combustion performance, and increased emission of harmful substances. Therefore, a water pump with adjustable speed is needed to significantly increase the rising speed of the engine water temperature and reduce fuel consumption, especially in the low-temperature stage of the engine, especially during cold start. When the engine temperature rises to the set temperature, the water pump needs to change to direct drive operation, and during the operation of the whole machine, the water pump is mostly in direct drive operation. The electromagnetic coil of a common electromagnetic speed control water pump needs to be energized for a long time to keep the water pump in a direct drive working state, wasting vehicle electrical energy, and when a circuit failure occurs, the water pump cannot operate at full speed. For example, in the patent with the publication number CN117328985 A, a safety electromagnetic speed control water pump is disclosed. On the basis of the existing common electromagnetic speed control water pump, an electronically controlled pulley device is added. An internal fixed disk is installed inside the electronically controlled pulley, and a sector permanent magnet is installed inside the opening at the upper end of the internal fixed disk. A U-shaped groove for installing an electromagnetic coil is opened inside the pulley. When the electromagnetic coil is de-energized, 18 sector permanent magnets with the same direction of magnetism in the friction pair of the electromagnetic clutch are first installed in the internal fixed disk and then the whole is installed at the bottom of the U-shaped groove of the electronically controlled pulley. Under normal conditions, the sector permanent magnet attracts the friction disk, and the friction disk is frictionally engaged with the upper end of the pulley. The pulley drives the drag disk body to rotate synchronously. When the coil is energized, the magnetic force of the sector permanent magnet is cancelled, and the friction disk is disconnected from the pulley. This structure requires a large number of permanent magnets and needs to maintain the same direction of magnetism during assembly, which is cumbersome, time-consuming and laborious, and has a high cost.

[0003] Therefore, in view of the above technical problems, an iron core component with fewer permanent magnets, simple structure, simple assembly and low cost, and a safety electromagnetic water pump using the iron core component are provided. Summary of the Utility Model

[0004] In view of this, the present utility model provides an iron core component that controls the water pump impeller to generate different rotation speeds by inputting an electric signal into an electromagnetic coil. When there is no electric signal input, the water pump is directly connected to the power output shaft of the engine, and the transmission ratio is fixed, and a safety electromagnetic water pump that uses this iron core component to achieve the purpose of safety control.

[0005] The technical solution of the present utility model is realized as follows: An iron core component includes a first magnetic pole, a second magnetic pole, and an electromagnetic coil. The second magnetic pole is arranged around the first magnetic pole, and the electromagnetic coil is arranged between the first magnetic pole and the second magnetic pole. A magnetic resistance ring is also arranged between the first magnetic pole and the second magnetic pole; it further includes an iron core bracket, and a magnetic conduction ring is arranged on the iron core bracket, and the magnetic conduction ring is magnetically connected to the first magnetic pole or the second magnetic pole; a permanent magnetic ring is arranged between the iron core bracket and the first magnetic pole or the second magnetic pole.

[0006] Based on the above technical solution, preferably, a first blocking ring is arranged on the outer ring of one end of the first magnetic pole, and a second blocking ring is arranged on the inner ring of one end of the second magnetic pole. The first blocking ring and the second blocking ring are arranged opposite to each other, and the magnetic resistance ring is arranged between the first blocking ring and the second blocking ring.

[0007] Based on the above technical solution, preferably, one end of the second magnetic pole where the second blocking ring is arranged is provided with a first mounting ring, and the magnetic conduction ring is buckled inside the first mounting ring.

[0008] Based on the above technical solution, preferably, the permanent magnetic ring is arranged between the first magnetic pole and the iron core bracket, and the permanent magnetic ring is magnetically connected to the first magnetic pole and the iron core bracket.

[0009] Based on the above technical solution, preferably, after the first magnetic pole is energized, it becomes an electromagnetic N pole, and after the second magnetic pole is energized, it becomes an electromagnetic S pole. The permanent magnetic ring includes a permanent magnetic N pole and a permanent magnetic S pole. The permanent magnetic N pole of the permanent magnetic ring is close to the iron core bracket, and the permanent magnetic S pole of the permanent magnetic ring is close to the first magnetic pole.

[0010] Based on the above technical solution, preferably, a third blocking ring is arranged on the outer ring of the first magnetic pole, and a fourth blocking ring is arranged on the inner ring of one end of the second magnetic pole. The third blocking ring and the fourth blocking ring are arranged opposite to each other, and the magnetic resistance ring is arranged between the third blocking ring and the fourth blocking ring.

[0011] Based on the above technical solution, preferably, one end of the first magnetic pole where the third blocking ring is arranged is provided with a second mounting ring, and the magnetic conduction ring is buckled outside the first mounting ring.

[0012] Based on the above technical solution, preferably, the permanent magnetic ring is arranged between the second magnetic pole and the iron core bracket, and the permanent magnetic ring is magnetically connected to the second magnetic pole and the iron core bracket.

[0013] Based on the above technical solutions, preferably, after the first magnetic pole is energized, it becomes an electromagnetic S pole, and after the second magnetic pole is energized, it becomes an electromagnetic N pole. The permanent magnet ring includes a permanent magnet N pole and a permanent magnet S pole. The permanent magnet N pole of the permanent magnet ring is closely adjacent to the iron core bracket, and the permanent magnet S pole of the permanent magnet ring is closely adjacent to the second magnetic pole.

[0014] Another technical solution of the present utility model is realized as follows: A safety electromagnetic water pump further includes a water pump housing and a water pump shaft rotatably arranged in the water pump housing. One end of the water pump shaft passing through the water pump housing is fixedly connected with an impeller, and the other end of the water pump shaft is fixedly connected with a flange plate. A magnet fixing plate is fixedly connected to the flange plate. A pulley is wound around the water pump housing. A driven disc and a heat dissipation disc are arranged at one end of the pulley away from the water pump housing. The driven disc is connected with a spring piece, and the spring piece is fixedly connected with the magnet fixing plate. An annular soft iron disc is arranged on the circumferential outer ring of the heat dissipation disc. A plurality of magnet monomers are inlaid on the circumferential outer ring of the magnet fixing plate, and the magnet monomers are axially corresponding to the soft iron disc in the heat dissipation disc; Through holes and a plurality of fixing holes are arranged on the iron core bracket, and the fixing holes are arranged around the through holes.

[0015] The safety electromagnetic water pump of the present utility model has the following beneficial effects compared with the prior art:

[0016] (1) This iron core component does not require an internal fixing plate and several sector-shaped permanent magnets, with fewer parts and more convenient assembly. The provided iron core component only adds one permanent magnet compared to the iron core component of an ordinary electromagnetic water pump, adding the thickness of one permanent magnet in the axial direction and not requiring additional space in the radial direction. The mechanism is simple, has a compact size, simple part processing and assembly, and is composed of components with less cost;

[0017] (2) The first blocking ring and the second blocking ring are arranged oppositely to form an installation groove for the electromagnetic coil, avoiding the position deviation of the electromagnetic coil 3 during use, resulting in a decline or failure of the use effect;

[0018] (3) By controlling the iron core component, the automotive ECU can achieve intelligent electric control of the water pump, accurately control the opening and operation, stop at different speeds of the water pump. At the same time, when the iron core component fails or is damaged, the safety electromagnetic water pump can work like a traditional water pump to achieve safety control, solving the technical problem that when the electromagnetic speed control device of an ordinary electromagnetic water pump is damaged, the entire water pump will not be able to work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 This is a cross-sectional view of a safety electromagnetic water pump of the present utility model;

[0021] Figure 2 This is a cross-sectional view of an iron core component of the present utility model;

[0022] Figure 3 For the present utility model Figure 2 View A-A;

[0023] Figure 4 This is a cross-sectional view of another iron core component of the present utility model. Specific implementation manner

[0024] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment 1

[0025] As Figure 2 and 3 shown, an iron core component includes a first magnetic pole 1, a second magnetic pole 2, and an electromagnetic coil 3. The second magnetic pole 2 is arranged around the first magnetic pole 1, and the electromagnetic coil 3 is arranged between the first magnetic pole 1 and the second magnetic pole 2. A magnetic flux blocking ring 4 is further arranged between the first magnetic pole 1 and the second magnetic pole 2; it further includes an iron core bracket 7, a magnetic conduction ring 5 is arranged on the iron core bracket 7, and the magnetic conduction ring 5 is magnetically connected to the first magnetic pole 1 or the second magnetic pole 2; a permanent magnetic ring 6 is arranged between the iron core bracket 7 and the first magnetic pole 1 or the second magnetic pole 2. This iron core component has fewer structural parts, which is convenient for installation and maintenance. The iron core bracket 7 and the second magnetic pole 2 are separately designed, with less processing difficulty, reducing the cost of parts. The electromagnetic coil 3 is inside the first magnetic pole 1 and the second magnetic pole 2 and is fixed by glue, with stronger use reliability; the iron core bracket 7 serves as a reference for the first magnetic pole 1 and the second magnetic pole 2, significantly improving the installation accuracy; this iron core component does not require an internal fixing disk and several sector-shaped permanent magnets, with fewer parts and more convenient assembly. The provided iron core component only adds a permanent magnetic ring 6 compared to the iron core component of an ordinary electromagnetic water pump, increasing the thickness of a permanent magnet in the axial direction and not requiring additional space in the radial direction. The mechanism is simple, with a compact size, simple part processing and assembly, and is composed of components with less cost.

[0026] The iron core support 7 is made of a magnetic conductive material, preferably 10# steel, and other magnetic conductive materials can also be replaced according to actual needs. In this embodiment, the magnetic resistance ring 4 is composed of copper metallurgical powder. The magnetic resistance ring 4 can also be composed of magnetic resistance materials such as rubber and wood. This embodiment takes copper metallurgical powder as an example. The outer part of the iron core support 7 and the magnetic resistance ring 4 in the radial direction are fixedly connected by welding or bonding.

[0027] A first blocking ring 11 is provided on the outer ring of one end of the first magnetic pole 1, and a second blocking ring 21 is provided on the inner ring of one end of the second magnetic pole 2. The first blocking ring 11 and the second blocking ring 21 are arranged opposite to each other, and the magnetic resistance ring 4 is arranged between the first blocking ring 11 and the second blocking ring 21. Among them, the first blocking ring 11 and the second blocking ring 21 are arranged opposite to each other to form an installation groove for the electromagnetic coil 3, avoiding the position deviation of the electromagnetic coil 3 during use, resulting in a decrease or failure of the use effect.

[0028] One end of the second magnetic pole 2 where the second blocking ring 21 is provided is provided with a first installation ring 22, and the magnetic conductive ring 5 is buckled in the first installation ring 22. The magnetic conductive ring 5 connects the iron core support 7 and the second magnetic pole 2 by being buckled in the first installation ring 22, increasing the installation accuracy.

[0029] The permanent magnet ring 6 is arranged between the first magnetic pole 1 and the iron core support 7, and the permanent magnet ring 6 is magnetically connected to the first magnetic pole 1 and the iron core support 7. The permanent magnet ring 6 can be a whole ring structure or composed of multiple pieces spliced into a ring structure. As Figure 3 shown, the permanent magnet ring 6 is composed of three permanent magnets spliced together. The magnetic poles of adjacent two permanent magnet rings 6 on the same side are the same pole. The three permanent magnet rings 6 are used to provide a constant magnetic field. This embodiment only takes three permanent magnet rings 6 as an example, and the number of permanent magnet rings 6 can also be changed according to needs.

[0030] After the first magnetic pole 1 is energized, it becomes an electromagnetic N pole, and after the second magnetic pole 2 is energized, it becomes an electromagnetic S pole. The permanent magnet ring 6 includes a permanent magnet N pole and a permanent magnet S pole. The permanent magnet N pole of the permanent magnet ring 6 is close to the iron core support 7, and the permanent magnet S pole of the permanent magnet ring 6 is close to the first magnetic pole 1.

[0031] During the use of the iron core component, the permanent magnet N pole of the permanent magnet ring 6 is close to the iron core support 7. The iron core support 7 and the second magnetic pole 2 transfer the magnetism to the second magnetic pole 2 through the magnetic conductive ring 5 and the second blocking ring 21. At this time, the magnetism of the second magnetic pole 2 is the N pole; the permanent magnet S pole of the permanent magnet ring 6 is close to the first magnetic pole 1, and the magnetism of the first magnetic pole 1 is the S pole. The whole iron core component as a whole shows a certain magnetism; when the electromagnetic coil 3 is energized, after the electromagnetic coil 3 is energized, it can cancel the magnetism of the iron core component or increase the magnetism of the iron core component. Embodiment 2

[0032] Since the magnetic poles include an N pole and an S pole, when the iron core bracket 7 becomes magnetically connected to the first magnetic pole 1, the function of the iron core component in Embodiment 1 can still be achieved when the permanent magnet 6 is disposed between the iron core bracket 7 and the second magnetic pole 2.

[0033] As Figure 4 shown, an iron core component, a third blocking ring 12 is disposed on the outer circumference of the first magnetic pole 1, and a fourth blocking ring 23 is disposed on the inner circumference of one end of the second magnetic pole 2. The third blocking ring 12 and the fourth blocking ring 23 are disposed opposite to each other, and the magnetic blocking ring 4 is disposed between the third blocking ring 12 and the fourth blocking ring 23.

[0034] One end of the first magnetic pole 1 where the third blocking ring 12 is disposed is provided with a second mounting ring 13, and the magnetic conducting ring 5 is buckled outside the first mounting ring 22.

[0035] The permanent magnet ring 6 is disposed between the second magnetic pole 2 and the iron core bracket 7, and the permanent magnet ring 6 is magnetically connected to the second magnetic pole 2 and the iron core bracket 7.

[0036] After the first magnetic pole 1 is electrified, it becomes an electromagnetic S pole, and after the second magnetic pole 2 is electrified, it becomes an electromagnetic N pole. The permanent magnet ring 6 includes a permanent magnet N pole and a permanent magnet S pole. The permanent magnet N pole of the permanent magnet ring 6 is close to the iron core bracket 7, and the permanent magnet S pole of the permanent magnet ring 6 is close to the second magnetic pole 2. Embodiment 3

[0037] As Figures 1-3 shown, a safety type electromagnetic water pump further includes a water pump housing 82 and a water pump shaft 89 rotatably disposed in the water pump housing 82. One end of the water pump shaft 89 passing through the water pump housing 82 is fixedly connected with an impeller 81, and the other end of the water pump shaft 89 is fixedly connected with a flange plate 88. A magnet fixing plate 87 is fixedly connected to the flange plate 88. A belt pulley 83 is wound around the water pump housing 82. A driven disc 85 and a heat dissipation disc 86 are disposed at one end of the belt pulley 83 away from the water pump housing 82. The driven disc 85 is connected with a spring piece 810, and the spring piece 810 is fixedly connected with the magnet fixing plate 87. An annular soft iron disc 861 is disposed on the outer circumference of the heat dissipation disc 86. A plurality of magnet monomers 811 are inlaid on the outer circumference of the magnet fixing plate 87, and the magnet monomers 811 are axially corresponding to the soft iron disc 861 in the heat dissipation disc 86; a through hole 71 and a plurality of fixing holes 72 are disposed on the iron core bracket 7, and the fixing holes 72 are disposed around the through hole 71.

[0038] During the use of the safety electromagnetic water pump, the permanent magnet N pole of the permanent magnet ring 6 closely abuts against the iron core bracket 7. The iron core bracket 7 and the second magnetic pole 2 transfer magnetism to the second magnetic pole 2 through the magnetic conduction ring 5 and the second blocking ring 21. At this time, the magnetism of the second magnetic pole 2 is the N pole; the permanent magnet S pole of the permanent magnet ring 6 closely abuts against the first magnetic pole 1, and the magnetism of the first magnetic pole 1 is the S pole. The entire iron core component as a whole exhibits a certain magnetism. At this time, the impeller 81 is driven by the magnetic field, and the water pump shaft 89 rotates at full speed; when the working temperature of the engine does not reach the predetermined temperature, the electromagnetic coil 3 is energized to cancel the magnetism of the iron core component; at this time, the impeller 81 is not driven by the magnetic field, and the water pump shaft 89 rotates at a differential speed, which will not waste the mechanical energy of the engine, reduce the time for the engine water temperature to rise, shorten the warm-up time, reduce the wear of the equipment, improve the combustion performance of the fuel, reduce the emission of harmful substances, reduce fuel consumption, and extend the life of the engine. By controlling the iron core component, the vehicle ECU realizes the intelligent electric control of the water pump, and can accurately control the opening, operation and stop of the water pump at different speeds. At the same time, when the iron core component fails or is damaged, the safety electromagnetic water pump can work like a traditional water pump to achieve safety control, solving the technical problem that the entire water pump will not work when the electromagnetic speed control device of an ordinary electromagnetic water pump is damaged.

[0039] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An iron core component, comprising a first magnetic pole (1), a second magnetic pole (2) and an electromagnetic coil (3), wherein the second magnetic pole (2) is arranged around the first magnetic pole (1), and the electromagnetic coil (3) is arranged between the first magnetic pole (1) and the second magnetic pole (2), and is characterized in that: A magnetic flux blocking ring (4) is also arranged between the first magnetic pole (1) and the second magnetic pole (2); It further includes an iron core support (7). A magnetic conduction ring (5) is arranged on the iron core support (7), and the magnetic conduction ring (5) is magnetically connected to the first magnetic pole (1) or the second magnetic pole (2); A permanent magnetic ring (6) is arranged between the iron core support (7) and the first magnetic pole (1) or the second magnetic pole (2).

2. The iron core component according to claim 1, characterized in that: A first blocking ring (11) is arranged on the outer ring of one end of the first magnetic pole (1), and a second blocking ring (21) is arranged on the inner ring of one end of the second magnetic pole (2). The first blocking ring (11) and the second blocking ring (21) are arranged oppositely, and the magnetic flux blocking ring (4) is arranged between the first blocking ring (11) and the second blocking ring (21).

3. A core component according to claim 2, characterized in that: One end of the second magnetic pole (2) where the second blocking ring (21) is arranged is provided with a first mounting ring (22), and the magnetic conduction ring (5) is buckled inside the first mounting ring (22).

4. A core component according to claim 2, characterized in that: The permanent magnetic ring (6) is arranged between the first magnetic pole (1) and the iron core support (7), and the permanent magnetic ring (6) is magnetically connected to the first magnetic pole (1) and the iron core support (7).

5. A core component according to claim 1, characterized in that: After the first magnetic pole (1) is energized, it becomes an electromagnetic N pole, and after the second magnetic pole (2) is energized, it becomes an electromagnetic S pole. The permanent magnetic ring (6) includes a permanent magnetic N pole and a permanent magnetic S pole. The permanent magnetic N pole of the permanent magnetic ring (6) is close to the iron core support (7), and the permanent magnetic S pole of the permanent magnetic ring (6) is close to the first magnetic pole (1).

6. A core component according to claim 1, wherein: A third blocking ring (12) is arranged on the outer ring of the first magnetic pole (1), and a fourth blocking ring (23) is arranged on the inner ring of one end of the second magnetic pole (2). The third blocking ring (12) and the fourth blocking ring (23) are arranged oppositely, and the magnetic flux blocking ring (4) is arranged between the third blocking ring (12) and the fourth blocking ring (23).

7. The iron core component according to claim 6, characterized in that: One end of the first magnetic pole (1) where the third blocking ring (12) is arranged is provided with a second mounting ring (13), and the magnetic conduction ring (5) is buckled outside the first mounting ring (22).

8. A core component according to claim 6, characterized in that: The permanent magnetic ring (6) is arranged between the second magnetic pole (2) and the iron core support (7), and the permanent magnetic ring (6) is magnetically connected to the second magnetic pole (2) and the iron core support (7).

9. The iron core component according to claim 6, characterized in that: After the first magnetic pole (1) is energized, it becomes an electromagnetic S pole, and after the second magnetic pole (2) is energized, it becomes an electromagnetic N pole. The permanent magnetic ring (6) includes a permanent magnetic N pole and a permanent magnetic S pole. The permanent magnetic N pole of the permanent magnetic ring (6) is close to the iron core support (7), and the permanent magnetic S pole of the permanent magnetic ring (6) is close to the second magnetic pole (2).

10. A safety electromagnetic water pump, comprising the iron core component described in any one of claims 1-9, characterized in that: It further includes a water pump housing (82) and a water pump shaft (89) rotatably arranged inside the water pump housing (82). One end of the water pump shaft (89) passing through the water pump housing (82) is fixedly connected with an impeller (81), and the other end of the water pump shaft (89) is fixedly connected with a flange plate (88). A magnet fixing plate (87) is fixedly connected to the flange plate (88). A pulley (83) is wound around the water pump housing (82). A driven disk (85) and a heat dissipation disk (86) are arranged at one end of the pulley (83) away from the water pump housing (82). The driven disk (85) is connected with a spring piece (810), and the spring piece (810) is fixedly connected with the magnet fixing plate (87). An annular soft iron disk (861) is arranged on the circumferential outer ring of the heat dissipation disk (86). A plurality of magnet monomers (811) are inlaid on the circumferential outer ring of the magnet fixing plate (87), and the magnet monomers (811) are axially corresponding to the soft iron disk (861) inside the heat dissipation disk (86). A through hole (71) and a plurality of fixing holes (72) are arranged on the iron core bracket (7), and the fixing holes (72) are arranged around the through hole (71).

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