Electromagnetic pump

Abstract

Disclosed in the present invention is an electromagnetic pump, comprising: a coil assembly and a retainer. The retainer is fixed outside the coil assembly, and is used for conducting magnetic flux outside the coil assembly. The coil assembly comprises a coil framework on the inner side; a front yoke ring, a rear yoke ring and an isolation ring are provided in the coil framework, the isolation ring being located between the front yoke ring and the rear yoke ring. A first winding position, a partition position and a second winding position are longitudinally distributed on the coil framework, a first coil being wound on the first winding position, a second coil being wound on the second winding position, and the partition position being corresponding to the position of the isolation ring. In the electromagnetic pump of the present invention, no coil is provided at the partition position, so that lines of magnetic force at the isolation ring are disconnected, making segmentation effect of the lines of magnetic force better, and reducing the coil cost.

Description

Electromagnetic pump TECHNICAL FIELD

[0001] The present application relates to the technical field of pump equipment, and particularly relates to an electromagnetic pump. BACKGROUND

[0002] Generally, small household pumps are often used in small household appliances, such as water supply devices of electric irons, coffee machines, cleaning machines and the like. The existing related electromagnetic pumps achieve the liquid conveying effect through the circulation action of the two one-way valves for water inlet and water outlet. The existing known technology is to connect a diode between a conductive coil and an alternating current power supply, to realize the circulation on-off of the coil through the diode, that is, to realize the on-off of the magnetic conduction of the coil, so as to drive the pump core of the pump body to make corresponding circulation movement, the movement of the pump core makes the one-way valve work, and finally realizes the liquid conveying function of the electromagnetic vibration pump. However, the existing technology still needs to be further improved in structure, and problems such as unreasonable distribution of leakage magnetic flux and magnetic induction lines of the electromagnetic coil need to be further improved by the researchers in the field. TECHNICAL PROBLEM

[0003] The purpose of the present application is to provide an electromagnetic pump to solve the technical problem of optimizing the electromagnetic coil. TECHNICAL SOLUTION

[0004] To achieve the above purpose, the technical scheme adopted by the present application is to provide an electromagnetic pump, comprising: a coil assembly and a retainer fixed outside the coil assembly, the retainer being used for guiding the magnetic flux outside the coil assembly, the coil assembly comprising a coil skeleton on the inner side, the coil skeleton being provided with a front magnetic yoke ring, a rear magnetic yoke ring and a separation ring, the separation ring being located between the front magnetic yoke ring and the rear magnetic yoke ring, the coil skeleton being longitudinally distributed with a first winding position, a separation position and a second winding position, the first winding position being wound with a first coil, the second winding position being wound with a second coil, and the separation position corresponding to the position of the separation ring. BENEFICIAL EFFECT

[0005] The electromagnetic pump of the present application breaks the magnetic lines of force at the position of the separation ring by not arranging the coil at the separation position, and the magnetic line of force splitting effect is better; at the same time, the cost of the coil at the separation position is saved, and the utilization rate of the whole coil is improved.

[0006] Preferably, the separation position is provided with an insert piece, the range of the insert piece at least partially covering the thickness range of the first coil or the second coil. The insert piece will constrain the magnetic lines of force between the first coil and the second coil, so that the magnetic lines of force are more concentrated; at the same time, the constrained magnetic lines of force form a closed loop with the retainer and the front magnetic yoke ring and the rear magnetic yoke ring, so that the magnetic lines of force of the first coil and the second coil have better constraining effect, and the utilization rate of the magnetic field is improved.

[0007] More preferably, the above-mentioned insert is composed of two semi-circular split inserts. The split inserts are spliced together to form a relatively complete ring, which facilitates the assembly of the insert on the coil framework; meanwhile, a passage can be left in the middle to facilitate the connection between the two coils.

[0008] More preferably, the above-mentioned insert includes a first insert close to the front yoke and a second insert close to the rear yoke. The two inserts form closed loops of magnetic circuits with the front yoke and the rear yoke, respectively, which helps to increase the number of magnetic lines of force constrained by the partition and does not interfere with each other.

[0009] More preferably, one side of the center of the first insert is in contact with one end of the front yoke, and one side of the center of the second insert is in contact with one end of the rear yoke. In this way, the first insert and the front yoke form a closed magnetic circuit, and the second insert and the rear yoke form a closed magnetic circuit, so that there is no discontinuous position for the constraint of magnetic lines of force, making the distribution of magnetic lines of force at the partition more reasonable.

[0010] More preferably, the above-mentioned insert is provided with a first hole in the middle, and the coil framework is provided with a second hole in the middle. The minimum diameter of the first hole is greater than the minimum inner diameter of the second hole. The middle part of the insert does not pass through the coil framework, so that burrs are not formed in the second hole of the coil framework, and other components passing through the second hole are not damaged.

[0011] Preferably, the thickness of the above-mentioned front yoke and the rear yoke is in the range of 2-3.5 mm. When the thickness of the front yoke and the rear yoke is less than 2 mm, the number of magnetic lines of force that can be accommodated is limited, resulting in a weakened magnetic field and affecting the output power of the electromagnetic pump. When the thickness of the front yoke and the rear yoke is greater than 3.5 mm, due to the overall volume limitation of the electromagnetic pump, the thickness of the first coil and the second coil is reduced, which reduces the output power of the first coil and the second coil, and further affects the output power of the electromagnetic pump.

[0012] Preferably, one end of the above-mentioned retainer is provided with a front hole located on one side of the front yoke, and the diameter of the front hole is smaller than the outer diameter of the front yoke. One end of the front yoke is in contact with the position of the front hole of the retainer, which ensures that the magnetic lines of force at this position are closed, improves the constraint effect of the magnetic lines of force, and improves the utilization rate of the magnetic field.

[0013] Preferably, one end of the above-mentioned retainer is provided with a rear hole located on one side of the rear yoke, and the diameter of the rear hole is smaller than the outer diameter of the rear yoke. One end of the rear yoke is in contact with the position of the rear hole of the retainer, which ensures that the magnetic lines of force at this position are closed, improves the constraint effect of the magnetic lines of force, and improves the utilization rate of the magnetic field.

[0014] Preferably, the partition position of the coil former forms the isolation ring with the central protrusion. That is, the isolation ring is integrated with the coil former, which reduces the separate component of the isolation ring and the steps of assembling the isolation ring, thereby improving the manufacturing efficiency of the electromagnetic pump.

[0015] Preferably, the front magnetic yoke ring and / or the rear magnetic yoke ring can contact the retainer. This ensures that the magnetic lines of force at this position are closed, thereby improving the magnetic line of force restraint effect at this position and improving the utilization rate of the magnetic field.

[0016] Preferably, the main pipe is provided, which passes through the retainer, the coil former, the front magnetic yoke ring, and the rear magnetic yoke ring. A mover is arranged in the main pipe. One end of the main pipe is connected to the water outlet, and the other end of the main pipe is connected to the water inlet. A power spring is arranged in the main pipe near the water inlet. One end of the power spring contacts the mover, and the other end of the power spring is connected to a spring seat. The spring seat is made of a non-metal material. The spring seat is not magnetized, so the action of the mover is driven only by the external magnetic field of the main pipe and the magnetization of the mover itself. The coil structure of the present application can achieve this driving, thereby saving the material cost of the spring seat.

[0017] More preferably, the first coil is near the water outlet, and the second coil is near the water inlet. The diameters of the first coil and the second coil are 36-43 mm. When the diameters of the first coil and the second coil are less than 36 mm, the number of turns of the coils is too small to provide sufficient magnetic force, and the output power of the electromagnetic pump is not enough. When the diameters of the first coil and the second coil are greater than 43 mm, the electromagnetic pump is too large in size to be installed in common household appliances.

[0018] More preferably, the longitudinal height of the first coil is 17-19.5 mm, and the longitudinal height of the second coil is 10-17 mm. The height of the first coil needs to ensure the magnetic force of the magnetized mover, so it cannot be too short. The height of the second coil needs to provide the backward power of the magnetized mover, and without the magnetization assistance of the stator, the second coil needs to have a certain number of turns, so the minimum height is 10 mm. At the same time, the overall height of the first coil, the second coil, and the partition position is limited, so the heights of the first coil and the second coil have upper limits.

[0019] Preferably, the main pipe is provided, which passes through the retainer, the coil former, the front magnetic yoke ring, and the rear magnetic yoke ring. A mover is arranged in the main pipe. One end of the main pipe is connected to the water outlet, and the other end of the main pipe is connected to the water inlet. A power spring is arranged in the main pipe near the water inlet. One end of the power spring contacts the mover, and the other end of the power spring is connected to a spring seat. The spring seat is made of a non-metal material. The spring seat is not magnetized, so the action of the mover is driven only by the external magnetic field of the main pipe and the magnetization of the mover itself. The coil structure of the present application can achieve this driving, thereby saving the material cost of the spring seat.

[0020] More preferably, the longitudinal height of the first coil is 17-19.5 mm, and the longitudinal height of the second coil is 9-17 mm. Due to the presence of the magnetizable stator, the height of the second coil can be reduced to 9 mm, which improves the utilization of the coil and reduces the cost of the coil.

[0021] Preferably, the first coil and the second coil are connected in series. The series-connected first coil and second coil can make the front and rear magnetic fields formed thereby completely synchronized, which improves the utilization of the magnetic field and prevents the front and rear magnetic fields from interfering with each other. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0023] Wherein:

[0024] Fig. 1 is a schematic diagram of the cross-sectional structure of the electromagnetic pump 1000 of embodiment one;

[0025] Fig. 2 is a schematic diagram of the structure of the insert 1230 of the electromagnetic pump 1000 of embodiment one;

[0026] Fig. 3 is a schematic diagram of the cross-sectional structure of the electromagnetic pump 2000 of embodiment two;

[0027] The reference signs in the drawings are as follows:

[0028] 1000, 2000 - electromagnetic pump;

[0029] 1100, 2100 - retainer;

[0030] 1110 - front hole;

[0031] 1120 - rear hole;

[0032] 1200, 2200 - coil assembly;

[0033] 1210, 2210 - coil skeleton;

[0034] 1211 - first winding position;

[0035] 1212 - second winding position;

[0036] 1213, 2213 - partition position;

[0037] 1214 - second through hole;

[0038] 1221, 2221 - first coil;

[0039] 1222, 2222 - second coil;

[0040] 1230 - tab; 2233 - first tab; 2234 - second tab;

[0041] 1231 - sub-tab;

[0042] 1232 - first through-hole;

[0043] 1310, 2310 - front yoke ring;

[0044] 1320, 2320 - rear yoke ring;

[0045] 1400 - isolation ring;

[0046] 1500, 2500 - main pipe;

[0047] 1510 - water outlet;

[0048] 1520 - water inlet;

[0049] 1600, 2600 - mover;

[0050] 1700, 2700 - power spring;

[0051] 1710 - spring seat; 2710 - stator. Embodiments of the present application

[0052] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0053] It should be noted that when an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element.

[0054] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like, indicate directions or positions based on the directions or positions shown in the drawings, and are used for convenience only to describe the application and the accompanying drawings, and are not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the application.

[0055] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or a specific number of indicated technical features. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited. Embodiment one:

[0056] As shown in FIG. 1 and FIG. 2, FIG. 1 is a cross-sectional structural schematic diagram of the electromagnetic pump 1000 of the embodiment one of the application, and FIG. 2 is a structural schematic diagram of the insert piece 1230 of the juicer 1000 of the embodiment one of the application.

[0057] The embodiment discloses an electromagnetic pump 1000, which comprises a retainer 1100, a coil assembly 1200 and a main pipe 1500. The coil assembly 1200 is sleeved outside the main pipe 1500, and the retainer 1100 is sleeved outside the coil assembly 1200. Inside the coil assembly 1200, the main pipe 1500 is sleeved with a front magnetic yoke ring 1310 and a rear magnetic yoke ring 1320. One end of the main pipe 1500 is provided with a water outlet 1510, and the other end is provided with a water inlet 1520. The front magnetic yoke ring 1310 is close to the water outlet 1510, and the rear magnetic yoke ring 1320 is close to the water inlet 1520.

[0058] The retainer 1100 is provided with a front hole 1110 and a rear hole 1120 for the main pipe 1500 to pass through. The front hole 1110 is close to the water outlet 1510, and the rear hole 1120 is close to the water inlet 1520. The inner diameter of the front hole 1110 is smaller than the outer diameter of the front magnetic yoke ring 1310, and the inner diameter of the rear hole 1120 is smaller than the outer diameter of the rear magnetic yoke ring 1320. The end of the front magnetic yoke ring 1310 and the rear magnetic yoke ring 1320 can contact the retainer 1100.

[0059] The coil assembly 1200 comprises a coil former 1210, on which are sequentially arranged a first winding position 1211, a partition position 1213 and a second winding position 1212. The first winding position 1211 is wound with a first coil 1221, and the second winding position 1212 is wound with a second coil 1222. The partition position 1213 is not wound with a coil. The first coil 1221 and the second coil 1222 are connected in series. The partition position 1213 is inwardly protruded to form an isolation ring 1400. The isolation ring 1400 is located between the front magnetic yoke ring 1310 and the rear magnetic yoke ring 1320. The partition position 1213 is provided with an insert 1230, which is composed of two half-ring-shaped sub-inserts 1231 with a gap between the two sub-inserts 1231. A first through hole 1232 is formed in the middle of the insert 1230, and a second through hole 1214 is formed in the middle of the coil former 1210, through which the main pipe 1500 passes. The minimum inner diameter of the first through hole 1232 is smaller than that of the second through hole 1214, so that the inner side of the insert 1230 does not pass through the coil former 1210, and does not form burrs to scratch the main pipe. The insert 1230 is inserted into the coil former 1210 near the central position, so that the side surface of the central position of the insert 1230 can contact the end surface of the front magnetic yoke ring 1310 and the rear magnetic yoke ring 1320.

[0060] In the embodiment, the thickness of the front magnetic yoke ring 1310 and the rear magnetic yoke ring 1320 is 2 mm. The diameter of the first coil 1221 and the second coil 1222 is 36 mm. The longitudinal height of the first coil 1221 is 19.5 mm, and the longitudinal height of the second coil is 17 mm.

[0061] In the electromagnetic pump 1000 of the embodiment, the cage 1100, the insert 1230 and the front magnetic yoke ring 1310 form a first closed-loop magnetic field, the cage 1100, the insert 1230 and the rear magnetic yoke ring 1320 form a second closed-loop magnetic field, and the magnetic lines of force of the partition position 1213 are sufficiently constrained, thereby improving the magnetic energy conversion efficiency and saving the amount of coils. Embodiment Two

[0062] As shown in FIG. 3, FIG. 3 is a sectional structure schematic diagram of an electromagnetic pump 2000 according to the second embodiment of the present application.

[0063] The embodiment discloses an electromagnetic pump 2000, which has basically the same structure as the electromagnetic pump 1000 according to the first embodiment of the present application, and the difference is as follows.

[0064] The juicer 2000 of the embodiment comprises a holder 2100, a coil assembly 2200 and a main pipe 2500. The coil assembly 2200 comprises a coil frame 2210. The coil frame 2210 is provided with a first coil 2221, a second coil 2222 and an intermediate partition 2213. The first and second insertion pieces 2233 and 2234 are arranged on the two sides of the partition 2213.

[0065] The main pipe 2500 is sleeved with a front magnetic yoke ring 2310 and a rear magnetic yoke ring 2320, which are arranged on the two sides of the partition 2213. The first insertion piece 2233 is inserted into the coil frame 2210 near the center position, so that one side of the first insertion piece 2233 can be in contact with one end of the front magnetic yoke ring 2310. The second insertion piece 2234 is inserted into the coil frame 2210 near the center position, so that one side of the second insertion piece 2234 can be in contact with one end of the rear magnetic yoke ring 2320. The main pipe 2500 is provided with a rotor 2600, which is connected with a power spring 2700. The other end of the power spring 2700 is connected with a stator 2710, which serves as a spring seat.

[0066] The thickness of the front magnetic yoke ring 2310 and the rear magnetic yoke ring 2320 of the embodiment is 3.5 mm. In another embodiment, the thickness of the front and rear magnetic yoke rings is 3 mm. The diameter of the first coil 2221 and the second coil 2222 of the embodiment is 43 mm. In another embodiment, the diameter of the first and second coils is 40 mm.

[0067] In the embodiment, the height of the first coil 2221 is 17 mm, and the height of the second coil 2222 is 9 mm. In another embodiment, the height of the first coil is 18 mm, and the height of the second coil is 10 mm.

[0068] In the electromagnetic pump 2000 of the embodiment, the holder 2100, the first insertion piece 2233 and the front magnetic yoke ring 2310 form a first closed-loop magnetic field, and the holder 2100, the second insertion piece 2234 and the rear magnetic yoke ring 2320 form a second closed-loop magnetic field. The partition effect of the partition 2213 is better, and since the two insertion pieces are separated, the two closed-loop magnetic fields do not interfere with each other, and the magnetic lines contained in the insertion pieces are more, and the utilization rate of the magnetic field is higher.

[0069] The above only discloses the preferred embodiments of the present application, and of course cannot limit the scope of the rights of the present application. Therefore, the equivalent changes made according to the claims of the present application still fall within the scope of the present application.

Claims

1. An electromagnetic pump comprising: The application discloses a coil assembly and a holder fixed outside the coil assembly, and the holder is used for magnetically conducting outside the coil assembly.

2. The electromagnetic pump of claim 1, wherein, The coil assembly comprises an inner coil framework, a front magnetic yoke ring, a rear magnetic yoke ring and a separation ring arranged in the coil framework, and the separation ring is located between the front magnetic yoke ring and the rear magnetic yoke ring.

3. The electromagnetic pump of claim 2, wherein, The coil framework is longitudinally provided with a first winding position, a separation position and a second winding position.

4. The electromagnetic pump of claim 2, wherein, The first winding position is wound with a first coil, and the second winding position is wound with a second coil.

5. The electromagnetic pump of claim 4, wherein, The separation position is provided with an insert piece.

6. The electromagnetic pump of claim 2, wherein, The insert piece is composed of two half-ring-shaped sub-insert pieces.

7. The electromagnetic pump of claim 1, wherein, The insert piece comprises a first insert piece and a second insert piece.

8. The electromagnetic pump of claim 1, wherein, The first insert piece is close to the front magnetic yoke ring, and the second insert piece is close to the rear magnetic yoke ring.

9. The electromagnetic pump of claim 1, wherein, One side of the center of the first insert piece is in contact with one end of the front magnetic yoke ring.

10. The electromagnetic pump of claim 1, wherein, One side of the center of the second insert piece is in contact with one end of the rear magnetic yoke ring.

11. The electromagnetic pump of claim 1, wherein, The insert piece is provided with a first through hole, and the coil framework is provided with a second through hole.

12. The electromagnetic pump of claim 1, wherein, The minimum diameter of the first through hole is greater than the minimum inner diameter of the second through hole.

13. The electromagnetic pump of claim 12, wherein, The thickness of the front magnetic yoke ring and the rear magnetic yoke ring ranges from 2 mm to 3.5 mm.

14. The electromagnetic pump of claim 13, wherein, One end of the holder is provided with a front hole located on one side of the front magnetic yoke ring.

15. The electromagnetic pump of claim 1, wherein, The diameter of the front hole is smaller than the outer diameter of the front magnetic yoke ring. One end of the holder is provided with a rear hole located on one side of the rear magnetic yoke ring. The diameter of the rear hole is smaller than the outer diameter of the rear magnetic yoke ring. The separation position of the coil framework is protruded to the center to form the separation ring. The front magnetic yoke ring and / or the rear magnetic yoke ring can be in contact with the holder. The holder is provided with a main pipe penetrating through the holder, the coil framework, the front magnetic yoke ring and the rear magnetic yoke ring. The main pipe is provided with a rotor. One end of the main pipe is connected with a water outlet, and the other end of the main pipe is connected with a water inlet. A power spring is arranged in the main pipe close to the water inlet. One end of the power spring is in contact with the rotor. The other end of the power spring is connected with a spring seat. The spring seat is made of non-metal material. The first coil is close to the water outlet, and the second coil is close to the water inlet. The diameter of the first coil and the second coil ranges from 36 mm to 43 mm. The longitudinal height of the first coil ranges from 17 mm to 19.5 mm. The longitudinal height of the second coil ranges from 10 mm to 17 mm. The main pipe is provided with a rotor. One end of the main pipe is connected with a water outlet, and the other end of the main pipe is connected with a water inlet. A power spring is arranged in the main pipe close to the water inlet. One end of the power spring is in contact with the rotor. The other end of the power spring is connected with a spring seat. The spring seat is made of metal material. The spring seat is a stator.

16. The electromagnetic pump of claim 15, wherein, The first coil has a longitudinal height of 17-19.5 mm and the second coil has a longitudinal height of 9-17 mm.

17. The electromagnetic pump of claim 1, wherein, The first coil is in series with the second coil.

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