Electromagnetic pump

Abstract

The invention discloses an electromagnetic pump which comprises a coil assembly and a holder, the holder is fixed outside the coil assembly and used for conducting magnetism outside the coil assembly, the coil assembly comprises a coil framework on the inner side, and a front magnet yoke ring, a rear magnet yoke ring and an isolating ring are arranged in the coil framework. The isolating ring is located between the front magnet yoke ring and the rear magnet yoke ring, a first winding position, a partition position and a second winding position are longitudinally distributed on the coil framework, a first coil is wound on the first winding position, a second coil is wound on the second winding position, and the partition position corresponds to the position of the isolating ring. According to the electromagnetic pump, no coil is arranged at the partition position, the magnetic line of force at the partition ring is disconnected, the magnetic line of force segmentation effect is better, and meanwhile the coil cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of pump equipment, and in particular to an electromagnetic pump. Background Art

[0002] Generally, small household pumps are often used in water supply and infusion devices of small household appliances, such as electric irons, coffee machines, cleaning machines, etc. The existing related electromagnetic pumps achieve the infusion effect of the pump through the cyclic action of the two one-way valves for water inlet and water outlet. The existing known technology is to connect a diode between the conductive coil and the AC power supply, and realize the cyclic on and off of the coil through the diode, that is, to realize the on and off of the magnetic conductivity of the coil, thereby driving the pump core of the pump body to make corresponding cyclic motions. The movement of the pump core makes the one-way valve work, and finally realizes the infusion function of the electromagnetic vibration pump. However, the existing technology still needs to be further improved in structure. Among them, the problems of magnetic leakage and unreasonable distribution of magnetic flux lines of the electromagnetic coil in the structure need to be further improved by researchers in this field. Summary of the invention

[0003] The object of the present invention is to provide an electromagnetic pump to solve the technical problem of electromagnetic coil optimization.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an electromagnetic pump, including: a coil assembly and a retaining frame, the retaining frame is fixed outside the coil assembly, the retaining frame is used to conduct magnetism outside the coil assembly, the coil assembly includes an inner coil frame, a front magnetic yoke ring, a rear magnetic yoke ring and an isolation ring are arranged in the coil frame, the isolation ring is located between the front magnetic yoke ring and the rear magnetic yoke ring, and a first winding position, a partition position and a second winding position are longitudinally distributed on the coil frame, the first winding position is wound with a first coil, the second winding position is wound with a second coil, and the partition position corresponds to the position of the isolation ring.

[0005] The electromagnetic pump of the present invention does not provide a coil at the partition position, so that the magnetic lines of force at the isolation ring are disconnected, and the magnetic line of force segmentation effect is better; at the same time, the cost of the coil at the partition position is saved, and the overall utilization rate of the coil is improved.

[0006] Preferably, the partition is provided with an insert, the range of which at least partially covers the thickness range of the first coil or the second coil. The insert will constrain the magnetic lines of force between the first coil and the second coil, making the magnetic lines of force more concentrated; at the same time, the constrained magnetic lines of force form a closed loop with the retaining frame and the front and rear magnetic yoke rings, so that the magnetic lines of force of the first coil and the second coil are better constrained and the magnetic field utilization rate is improved.

[0007] More preferably, the insert is composed of two semi-annular inserts. The insert is formed by splicing two semi-annular inserts into a relatively complete ring, which is convenient for assembling the insert on the coil frame; and a channel can be left in the middle to facilitate the connection between the two coils.

[0008] More preferably, the plug-in includes a first plug-in and a second plug-in, the first plug-in is close to the front magnetic yoke ring, and the second plug-in is close to the rear magnetic yoke ring. The two plug-ins respectively form a closed loop of the magnetic circuit with the front magnetic yoke ring and the rear magnetic yoke ring, which is conducive to increasing the number of magnetic lines of force constrained at the isolation position, and at the same time, the two closed loop magnetic circuits will not interfere with each other.

[0009] More preferably, one side of the center of the first plug is in contact with one end of the front yoke ring, and one side of the center of the second plug is in contact with one end of the rear yoke ring. In this way, the first plug and the front yoke ring can form a closed magnetic circuit, and the second plug and the rear yoke ring can form a closed magnetic circuit. There is no discontinuity in the constraint of the magnetic lines of force, so that the distribution of the magnetic lines of force at the isolation position is more reasonable.

[0010] More preferably, a first through hole is provided in the middle of the insert, a second through hole is provided in the middle of the coil frame, and the minimum diameter of the first through hole is greater than the minimum inner diameter of the second through hole. The middle part of the insert will not pass through the coil frame, so that no burr will be formed in the second through hole of the coil frame, and other components passing through the second through hole will not be damaged.

[0011] Preferably, the thickness of the front yoke ring and the rear yoke ring is in the range of 2-3.5mm. When the thickness of the front yoke ring and the rear yoke ring is less than 2mm, the magnetic lines of force that can be accommodated therein are limited, resulting in a weakening of the magnetic field therein, affecting the output power of the electromagnetic pump; when the thickness of the front yoke ring and the rear yoke ring is greater than 3.5mm, due to the limitation of the overall volume of the electromagnetic pump, the thickness of the first coil and the second coil of the toothbrush will be increased, so that the output power of the first coil and the second coil is reduced, thereby affecting the output power of the electromagnetic pump.

[0012] Preferably, a front hole is provided at one end of the retaining frame, the front hole is located on one side of the front magnetic yoke ring, and the diameter of the front hole is smaller than the outer diameter of the front magnetic yoke ring. One end of the front magnetic yoke ring is in contact with the position of the front hole of the retaining frame to ensure that the magnetic force lines at this location are closed, thereby improving the restraint effect of the magnetic force lines and improving the utilization rate of the magnetic field.

[0013] Preferably, a rear hole is provided at one end of the retaining frame, the rear hole is located on one side of the rear yoke ring, and the diameter of the rear hole is smaller than the outer diameter of the rear yoke ring. One end of the rear yoke ring is in contact with the position of the rear hole of the retaining frame to ensure that the magnetic lines of force at this location are closed, thereby improving the restraint effect of the magnetic lines of force and improving the utilization rate of the magnetic field.

[0014] Preferably, the partition of the coil frame protrudes toward the center to form the isolation ring, that is, the isolation ring is integrated with the coil frame, thus reducing the isolation ring as a separate component 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 retaining frame, so as to ensure that the magnetic force lines there are closed, improve the magnetic force line confinement effect there, and improve the magnetic field utilization rate.

[0016] Preferably, it also includes a main pipe, which passes through the retaining frame, the coil frame, the front yoke ring and the rear 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 at the end close to 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, which is made of non-metallic material. The spring seat will not be magnetized, so the movement of the mover is driven only by the external magnetic field of the main pipe and the magnetization of the mover itself; and the coil structure of the present invention can realize this drive, saving the material cost of the spring seat.

[0017] More preferably, the first coil is close to the water outlet, the second coil is close to the water inlet, and 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 coil turns is too small to provide sufficient magnetic force, and the output power of the electromagnetic pump is insufficient; when the diameters of the first coil and the second coil are greater than 43 mm, the electromagnetic pump will be too large and difficult to install in common household appliances.

[0018] More preferably, the longitudinal height of the first coil is 17-19.5mm, and the longitudinal height of the second coil is 10-17mm. 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 backward power to the magnetized mover, and without the assistance of the stator magnetization, the second coil must ensure a certain number of turns, so the minimum is 10mm; at the same time, the overall height of the first coil, the second coil and the partition is limited, so there is an upper limit to the height of the first coil and the second coil.

[0019] Preferably, it also includes a main pipe, which passes through the retaining frame, the coil frame, the front yoke ring and the rear yoke ring, and 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 at one end close to 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 metal, and the spring seat is a stator. The stator can be magnetized to assist the mover in driving and reduce the number of turns of the second coil.

[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, thereby improving the utilization rate of the coil and reducing the cost of the coil.

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

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] in:

[0024] Figure 1 Schematic diagram of the cross-sectional structure of the electromagnetic pump 1000 of the first embodiment;

[0025] Figure 2 It is a structural schematic diagram of the insert 1230 of the electromagnetic pump 1000 of the first embodiment;

[0026] Figure 3 It is a schematic cross-sectional structural diagram of the electromagnetic pump 2000 of the second embodiment;

[0027] The reference numerals in the figures are:

[0028] 1000, 2000——electromagnetic pump;

[0029] 1100, 2100——cage;

[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 perforation;

[0038] 1221, 2221——first coil;

[0039] 1222, 2222——second coil;

[0040] 1230——insert; 2233——first insert; 2234——second insert;

[0041] 1231——Split insert;

[0042] 1232 – first piercing;

[0043] 1310, 2310——Front yoke ring;

[0044] 1320, 2320——rear yoke ring;

[0045] 1400——Isolation ring;

[0046] 1500, 2500——Supervisor;

[0047] 1510——water outlet;

[0048] 1520 - water inlet;

[0049] 1600, 2600——Motor;

[0050] 1700, 2700——power spring;

[0051] 1710——Spring seat; 2710——Stator. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] It should be noted that when an element is referred to as being "fixed to" or "disposed 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 orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0056] Embodiment 1:

[0057] like Figure 1 , Figure 2 As shown, Figure 1 FIG. 1 is a schematic cross-sectional view of an electromagnetic pump 1000 according to Embodiment 1 of the present invention. Figure 2 Schematic diagram of the structure of the insert 1230 of the juice extractor 1000 according to the first embodiment of the present invention.

[0058] This embodiment discloses an electromagnetic pump 1000, including a retaining frame 1100, a coil assembly 1200 and a main pipe 1500. The coil assembly 1200 is sleeved outside the main pipe 1500, and the retaining frame 1100 is sleeved outside the coil assembly 1200. Inside the coil assembly 1200, the main pipe 1500 is provided with a front yoke ring 1310 and a rear yoke ring 1320. The main pipe 1500 is provided with a water outlet 1510 at one end and a water inlet 1520 at the other end. The front yoke ring 1310 is close to the water outlet 1510, and the rear yoke ring 1320 is close to the water inlet 1520.

[0059] The holder 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 ends of the front magnetic yoke ring 1310 and the rear magnetic yoke ring 1320 can contact the holder 1100.

[0060] The coil assembly 1200 includes a coil skeleton 1210, on which a first winding position 1211, a partition position 1213 and a second winding position 1212 are longitudinally arranged in sequence. A first coil 1221 is wound on the first winding position 1211, a second coil 1222 is wound on the second winding position 1212, and there is no coil at the partition position 1213. The first coil 1221 and the second coil 1222 are connected in series. The partition position 1213 protrudes inward to form an isolation ring 1400. The isolation ring 1400 is located between the front yoke ring 1310 and the rear yoke ring 1320. An insert 1230 is arranged in the partition position 1213, and the insert 1230 consists of two semi-annular sub-inserts 1231, and a gap is left 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 frame 1210, and the second through hole 1214 is for the main tube 1500 to pass through. The minimum inner diameter of the first through hole 1232 is smaller than the minimum inner diameter of the second through hole 1214, so that the inner side of the insert 1230 will not pass through the coil frame 1210, and will not form burrs to scratch the main tube. The insert 1230 is inserted through the coil frame 1210 near the center position, so that the side of the insert 1230 at the center position can contact the end faces of the front magnetic yoke ring 1310 and the rear magnetic yoke ring 1320.

[0061] In this embodiment, the thickness of the front yoke ring 1310 and the rear 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.

[0062] In the electromagnetic pump 1000 of this embodiment, the retaining frame 1100, the insert 1230, and the front magnetic yoke ring 1310 form a first closed-loop magnetic field, and the retaining frame 1100, the insert 1230, and the rear magnetic yoke ring 1320 form a second closed-loop magnetic field. The magnetic lines of force at the partition position 1213 are fully constrained, which improves the magnetic energy conversion efficiency and also saves the amount of coils.

[0063] Embodiment 2:

[0064] like Figure 3 As shown, Figure 3 It is a schematic cross-sectional structural diagram of an electromagnetic pump 2000 according to the second embodiment of the present invention.

[0065] This embodiment discloses an electromagnetic pump 2000, which has a structure substantially the same as that of the electromagnetic pump 1000 of the first embodiment of the present invention, and the differences include the following contents.

[0066] The juice extractor 2000 of this embodiment includes a holder 2100, a coil assembly 2200 and a main pipe 2500. The coil assembly 2200 includes a coil frame 2210. The coil frame 2210 is provided with a first coil 2221, a second coil 2222 and a middle partition 2213. The partition 2213 is provided with a first plug 2233 and a second plug 2234 on both sides.

[0067] The main pipe 2500 is sleeved with a front yoke ring 2310 and a rear yoke ring 2320, which are distributed on both sides of the partition position 2213. The first plug 2233 is inserted through the coil frame 2210 near the center position, so that one side of the first plug 2233 can contact one end of the front yoke ring 2310; the second plug 2234 is inserted through the coil frame 2210 near the center position, so that one side of the second plug 2234 can contact one end of the rear yoke ring 2310. A mover 2600 is arranged in the main pipe 2500, and the mover 2600 is connected to a power spring 2700, and the other end of the power spring 2700 is connected to a stator 2710, and the stator 2710 serves as a spring seat.

[0068] The thickness of the front yoke ring 2310 and the rear yoke ring 2320 of this embodiment is 3.5 mm. In another embodiment, the thickness of the front yoke ring and the rear yoke ring is 3 mm. The diameter of the first coil 2221 and the second coil 2222 of this embodiment is 43 mm. In another embodiment, the diameter of the first coil and the second coil is 40 mm. In this 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.

[0069] In the electromagnetic pump 2000 of this embodiment, the retainer 2100, the first plug 2233 and the front yoke ring 2310 form a first closed-loop magnetic field, and the retainer 2100, the second plug 2234 and the rear yoke ring 2320 form a second closed-loop magnetic field. The partition position 2213 has a better partitioning effect. At the same time, since the two plugs are separated, the two closed-loop magnetic fields will not interfere with each other. At the same time, the plug contains more magnetic lines of force, and the magnetic field utilization rate is higher.

[0070] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. An electromagnetic pump, comprising: A coil assembly and a retaining frame, wherein the retaining frame is fixed outside the coil assembly, and the retaining frame is used to conduct magnetism outside the coil assembly. The coil assembly includes an inner coil frame, and a front magnetic yoke ring, a rear magnetic yoke ring and an isolation ring are arranged inside the coil frame. The isolation ring is located between the front magnetic yoke ring and the rear magnetic yoke ring. It is characterized in that a first winding position, a partition position and a second winding position are longitudinally distributed on the coil frame, a first coil is wound on the first winding position, a second coil is wound on the second winding position, and the partition position corresponds to the position of the isolation ring.

2. The electromagnetic pump according to claim 1, characterized in that: The partition position is provided with an insert, the range of the insert at least partially covers the thickness range of the first coil or the second coil, and the insert is used for magnetic conduction.

3. The electromagnetic pump according to claim 2, characterized in that: The insert is composed of two semi-annular sub-inserts.

4. The electromagnetic pump according to claim 2, characterized in that: The inserting piece includes a first inserting piece and a second inserting piece, wherein the first inserting piece is close to the front magnetic yoke ring, and the second inserting piece is close to the rear magnetic yoke ring.

5. The electromagnetic pump according to claim 4, characterized in that: One side of the center of the first plug-in piece contacts one end of the front magnetic yoke ring, and one side of the center of the second plug-in piece contacts one end of the rear magnetic yoke ring.

6. The electromagnetic pump according to claim 2, characterized in that: A first through hole is arranged in the middle of the insert, and a second through hole is arranged in the middle of the coil frame. The minimum diameter of the first through hole is greater than the minimum inner diameter of the second through hole.

7. The electromagnetic pump according to claim 1, characterized in that: The thickness of the front magnetic yoke ring and the rear magnetic yoke ring ranges from 2 to 3.5 mm.

8. The electromagnetic pump according to claim 1, characterized in that: A front hole is provided at one end of the retaining frame, the front hole is located at one side of the front magnetic yoke ring, and the diameter of the front hole is smaller than the outer diameter of the front magnetic yoke ring.

9. The electromagnetic pump according to claim 1, characterized in that: A rear hole is provided at one end of the retaining frame, the rear hole is located at one side of the rear magnetic yoke ring, and the diameter of the rear hole is smaller than the outer diameter of the rear magnetic yoke ring.

10. The electromagnetic pump according to claim 1, characterized in that: The partition part of the coil frame protrudes toward the center to form the isolation ring.

11. The electromagnetic pump according to claim 1, characterized in that: The front yoke ring and / or the rear yoke ring may be in contact with the retaining frame.

12. The electromagnetic pump according to claim 1, characterized in that: It also includes a main pipe, which passes through the retaining frame, the coil frame, the front yoke ring and the rear 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 at one end close to 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, and the spring seat is made of non-metallic material.

13. The electromagnetic pump according to claim 12, characterized in that: The first coil is close to the water outlet, the second coil is close to the water inlet, and the diameters of the first coil and the second coil are 36-43 mm.

14. The electromagnetic pump according to claim 13, characterized in that: The longitudinal height of the first coil is 17-19.5 mm, and the longitudinal height of the second coil is 10-17 mm.

15. The electromagnetic pump according to claim 1, characterized in that: It also includes a main pipe, which passes through the retaining frame, the coil frame, the front yoke ring and the rear 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 at one end close to 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 metal, and the spring seat is a stator.

16. The electromagnetic pump according to claim 15, characterized in that The longitudinal height of the first coil is 17-19.5 mm, and the longitudinal height of the second coil is 9-17 mm.

17. The electromagnetic pump according to claim 1, characterized in that: The first coil is connected in series with the second coil.

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