KR100590197B1 - A liquid pump - Google Patents

Abstract

The present invention relates to a liquid pump in which a magnetic rotor and a pumping means are built in the flow path to enable miniaturization. The liquid pump has a liquid inlet 170 at one end thereof and a liquid outlet 180 at the other end thereof in communication with the flow path. A discharge pipe 160 of the type; A magnetic rotor (110) rotatably supported and located in the delivery pipe (160); Pumping means for causing a pressure difference in the delivery pipe (160) while rotating coaxially with the magnetic rotor (110); It is installed on the outer wall of the delivery pipe 160 and surrounds the magnetic rotor 110, and comprises a stator 132 constituting one or more phases (generating) by electricity supply.

Pump, liquid, magnetic rotor, stator, discharge pipe, pumping

Description

Liquid pump

The following drawings, which are attached in this specification, illustrate preferred embodiments of the present invention, and together with the detailed description of the present invention, serve to further understand the technical spirit of the present invention. It should not be construed as limited to.

Figure 1a, 1b is a conventional configuration of a liquid pump of various forms.

2 is a block diagram of a liquid pump according to an embodiment of the present invention.

Figure 3 is a side view of the bearing plate applied to the liquid pump of Figure 2;

Figure 4 is a conceptual diagram for explaining the driving principle of the magnetic rotor applied to the present invention.

5 is an exploded perspective view of a liquid pump according to another embodiment of the present invention.

Figure 6 is an exploded perspective view of a liquid pump according to another embodiment of the present invention.

FIG. 7 is an assembled front view of FIG. 6;

<Explanation of symbols for the main parts of the drawings>

110: magnetic rotor 110a: spiral channel

110-1: impeller 132: stator

132-1: film coil 160: delivery pipe

170: liquid inlet 180: liquid outlet

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid pump used for delivering a liquid, and more particularly to a liquid pump in which a magnetic rotor and a pumping means are built in the flow path to enable miniaturization.

In general, the liquid pump is responsible for transporting the liquid to the desired place by inflow and outflow of the liquid by the pressure difference of the impeller rotated by the motor.

1A is a schematic view showing a structure of a conventional liquid pump, in which an impeller 12 causing a pressure difference is installed at an output end of a motor 10, and the impeller 12 has an inlet 13 and an outlet 11. It is located in the pump housing (14) having a pump housing (14) so that the normal suction port 13 is soaked in the liquid of the storage container 20 to compensate for the insufficient suction energy during the rotation operation of the impeller (12). The airtight packing 22 is installed at a coupling portion between the output end 21 and the pump housing 14 of the motor 10.

1B is a schematic view showing the structure of another conventional liquid pump, in which an output end 21 of a motor 10 provided outside the vessel 20 is penetrated into the vessel 20 to form a permanent magnet 16 on a disc. When the permanent magnet 16 is rotated by the motor 10, the magnetic body 16a corresponding to the permanent magnet 16 rotates integrally with the impeller 12 by the magnetic force to pump the housing 14 Has a structure in which a suction force is generated at the suction port 13 to discharge liquid to the discharge port 11.

In the conventional liquid pump as described above, the pump body is made of a motor 10, an impeller 12, a pump housing 14, a permanent magnet 16, and the like, and a pipe and a liquid storage container 20 for transporting liquid are provided. Connected together to form one liquid transfer pump system.

This conventional liquid pump technique has a very small discharge amount when the suction port 13 of the pump housing 14 is driven without being immersed in the liquid in the container 20. In order to maintain the discharge amount at a normal level, a large-capacity pump must be used, and there is a problem in that economic efficiency is reduced due to increased manufacturing difficulties and manufacturing costs.

In addition, since the motor 10 is installed outside the vessel 20 and its output end penetrates back into the pump housing 14 through the vessel 20, the installation structure becomes complicated, Disassembly and assembly have a disadvantage.

In addition, since the pumping device on the motor 10 and the impeller 12 side requires the liquid storage container 20, it occupies a lot of installation space, and there are several parts to prevent leakage, so the risk of leakage increases, If installed in the circuit device will cause a circuit malfunction.

Moreover, in the case of a liquid pump adopted as a liquid cooling method for suppressing heat generation of an electronic device as the circuit of the electronic industry is miniaturized, a small liquid pump is urgently needed.

 The present invention is to solve the above-mentioned general problems of the prior art, it is an object of the present invention to provide a liquid pump that is not concerned about leakage, can be downsized, and does not require complicated piping.

Specific means of the present invention for achieving the above object,

A liquid pump installed in the flow path,

A hollow delivery tube having a liquid inlet at one end and a liquid outlet at the other end in communication therewith and connected to the flow path;

A magnetic rotor positioned in the delivery pipe so as to be rotatably supported and magnetic;

Pumping means for causing a pressure difference in the delivery pipe while rotating coaxially with the magnetic rotor;

It is installed on the outer wall of the delivery pipe wraps around the magnetic rotor, characterized in that it comprises a stator constituting one or more (phase) to generate magnetism by electricity supply.

In addition, the magnetic rotor according to the present invention is characterized in that the solid form.

In addition, the pumping means according to the invention is characterized in that consisting of a spiral channel formed on the outer peripheral surface of the magnetic rotor.

In addition, the pumping means according to the invention is characterized in that it consists of at least one impeller disposed on the outer circumferential surface of the magnetic rotor or one end of the rotating shaft or both ends of the rotating shaft.

In addition, the magnetic rotor according to the invention is characterized in that the hollow form.

In addition, the pumping means according to the invention is characterized in that consisting of a spiral channel formed on the inner circumferential surface or outer circumferential surface of the magnetic rotor.

In addition, the pumping means according to the invention is characterized in that consisting of at least one impeller disposed inside the magnetic rotor.

In addition, the surface of the magnetic rotor or the pumping means according to the invention is characterized in that the corrosion protection layer coated with synthetic resin is further formed to prevent corrosion.

In addition, the spiral channel formed in the magnetic rotor according to the present invention is characterized in that made of a non-magnetic material to be coupled to the magnetic rotor to prevent corrosion and improve workability.

In addition, the helical channel formed in the magnetic rotor according to the present invention is characterized in that the relatively deeper formed from the liquid inlet to the liquid outlet.

In addition, the stator according to the invention is characterized in that the coil is wound around the iron core.

In addition, the stator according to the invention is characterized in that consisting of a film coil laminated with a copper foil and an insulating film.

In addition, the magnetic rotor according to the invention is characterized in that it is configured to contact with the fluid flowing through the delivery pipe.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a schematic configuration diagram of a liquid pump of a first embodiment according to the present invention.

As shown in FIGS. 2 and 3, the liquid pump includes a liquid inlet 170 at one end thereof and a hollow outlet tube 160 connected to the flow path with the liquid outlet 180 at the other end thereof in communication with the liquid inlet 170.

Naturally, the delivery pipe 160 may be configured in various forms such as straight or curved.

In the delivery pipe 160, a magnetic magnetic rotor 110 is placed coaxially, and the magnetic rotor 110 is provided on both bearing plates 140 fixed to the inner wall of the delivery pipe 160. It is rotatably supported, and the bearing plate 140 is provided with a thrust bearing 190 for smoothly supporting the magnetic rotor 110.

The magnetic rotor 110 includes a permanent magnet having N, S poles as shown in FIG. Therefore, a magnetic field is formed around the magnetic rotor 110.

The rotary shaft 150 is installed in the magnetic rotor 110 so that the magnetic rotor 110 and the rotary shaft 150 are coaxially assembled, and the rotary shaft 150 is preferably mounted on a thrust bearing 190 made of carbon or ceramic. It is rotatably supported.

The magnetic rotor 110 may be formed in a solid or hollow.

Around the magnetic rotor 110, a stator 132 is formed on the outer circumferential surface of the delivery pipe 160 to receive a current supply to form a magnetic field. In this embodiment, the stator 132 is an iron core as shown in FIGS. It consists of a coil 130 wound on (120).

Therefore, when a current is applied to the coil 130 of the stator 132, the magnetic force is generated by the Fleming's left hand law, in which a kinetic force is formed between the magnetic field of the strong magnetic field formed in the iron core 120 and the magnetic field of the magnetic rotor 110. The rotor 110 is to rotate in one direction.

The magnetic rotor 110 is provided with a pumping means to obtain a force for sucking and discharging the liquid by causing a pressure difference in the flow path of the discharge pipe 160 during the rotational drive.

The pumping means of the first form may be composed of a helical channel (110a) formed in the magnetic rotor (110).

The spiral channel may be formed on the outer circumferential surface of the magnetic rotor 110 when the magnetic rotor 110 is a solid type, and the spiral channel may be the inner circumferential surface of the magnetic rotor 110 when the magnetic rotor 110 is hollow. Or it may be formed on one side or both sides of the outer peripheral surface.

In this case, the helical channel 110a may preferably have a slope in which a depth of the helical channel is formed deeper as the helical channel moves from the liquid inlet 170 to the liquid outlet 180, thereby increasing pumping efficiency.

In addition, the helical channel 110a is not limited to one, and may be composed of one or more groups in some cases.

The spiral channel 110a is preferably made of a nonmagnetic material and integrally coupled to the magnetic rotor 110 in order to prevent corrosion and improve workability. In this case, the nonmagnetic material may be polymer, silicon, silica, stainless steel, nickel or aluminum.

The one embodiment of the pumping device of the second embodiment example, also be configured with a magnetic rotor 110 by a hollow, as shown in 6, and having a plurality of ikpyeon arranged on both sides of the hollow magnetic rotor 110 of the Impeller (110-1) is configured to rotate integrally with the magnetic rotor (110).

In this case, the impeller 110-1 may be used so that the magnetic rotor 110 is coaxially fixed to the rotation shaft 150.

That is, the rotary shaft of the impeller 110-1 is rotatably fitted to the thrust bearing 190, and the impeller 110-1 is directly connected to both ends of the magnetic rotor 110 by fitting or fixing the ring 210. It is possible by fixing the furnace impeller 110-1 to the end surface side of the magnetic rotor 110.

At the same time as the thrust bearing 190 is installed, the bearing plate 140 supporting the rotation shaft 150 of the magnetic rotor 110 is fixedly installed on the inner wall of the delivery pipe 160 and has a plurality of holes for flowing fluid ( 140a).

At this time, the number or shape of the holes 140a is not particularly limited and may be modified in any form to smooth the flow of the fluid.

The impeller may be formed on an outer circumferential surface or an inner circumferential surface of the magnetic rotor according to the shape of the magnetic rotor, and may be configured at one end or both ends of a rotating shaft coaxially rotating with the magnetic rotor. In this case, one or two or more impellers may be configured according to the design.

On the other hand, since the magnetic rotor 110 is made of a magnetic metal, a corrosion prevention layer coated on its surface may be further formed to prevent corrosion due to contact with liquid.

At this time, the anti-corrosion layer is preferably a polymer, etc., it can be applied to all of the pumping means, such as the spiral channel (110a) or the impeller (110-1) in addition to the magnetic rotor. The method of forming the corrosion protection layer may be formed by, for example, molding in a mold.

The operation of the pumping motor of the first embodiment configured as described above will be described.

First, when the alternating current 270 is applied to the coil 130 as shown in FIG. 4, a magnetic flux is formed through the iron core 120, and the magnetic flux acts as a repulsive force with a magnetic force emitted from the magnetic rotor 110. According to the left hand rule, the magnetic rotor 110 rotates in one direction.

At this time, the magnetic rotor 110 is supported by the thrust bearing 190 installed on the bearing plate 140 and smoothly rotates.

Therefore, the spiral channel 110a or the impeller 110-1 provided in the magnetic rotor 110 rotates in the same direction, and a pressure difference is generated between the front and rear of the blade plate of the spiral channel 110a or the impeller 110b. .

The suction force is generated by the pressure difference, and the liquid is introduced from the liquid inlet 170 and sent out to the liquid outlet 180. At this time, the liquid passes through the hole 140a of the bearing plate 140.

More specifically, the fluid flows between the magnetic rotor 110 and the inner wall of the discharge pipe 160 when the spiral channel 110a is applied, and the inside of the cylindrical magnetic rotor 110 when the impeller 110-1 is applied. It flows through the through hole.

At this time, the required flow rate and flow rate can be obtained by controlling the current applied to the coil 130 for adjusting the rotation speed of the magnetic rotor 110, for example.

The flow rate of the liquid is controlled not only by the change in the rotation speed of the magnetic rotor 110 but also by the change in the length, the diameter and the shape of the spiral channel 110a of the magnetic rotor 110.

In order to achieve the required flow rate in a small motor, high speed rotation is required, and frictional heat is generated due to mechanical friction between the motor components. However, the liquid pump according to the present invention operates as described above, so that the pumped fluid flows in contact with the mechanical friction part, especially the magnetic rotor, so that natural cooling is achieved by internal fluid heat transfer, thereby reducing the generated heat of the friction part. The durability of the pump is high.

In addition, the stator of the liquid pump according to the present invention is configured to be located on the outer wall of the delivery pipe, the heat generated by the electrical overload in the winding itself of the stator has the effect of cooling due to heat transfer by the fluid flowing along the delivery pipe This increases the durability of the liquid pump.

In addition, since the magnetic rotor 110 is included in the flow path, the pumping operation is performed, and thus, a decrease in pumping efficiency generated due to the passage of many flow paths as in the prior art is prevented.

In addition, since the coil 130 of the stator 132 required to drive the magnetic rotor 110 is installed in contact with the fluid flowing through the delivery pipe 160, the mechanical life is improved.

Second Embodiment

In the second embodiment, the liquid pump is configured in the same manner as in the first embodiment, and at the same time, the stator is replaced with a film coil 132-1 containing copper foil as shown in FIGS. 5, 6, and 7. do.

Here, the film coil 132-1, as is well known, forms a lower layer coil by etching copper foil bonded to the insulating film on the cross-section, and coated thereon an insulating film having good plating property except the connection point, followed by electroless plating and electrode poles. The copper foil formed by plating is etched to form an upper coil to automatically connect the insulating films.

In the second embodiment, the magnetic rotor 110 may be either solid or hollow, and a spiral wing or an impeller may be adopted as the pumping means.

Therefore, when a current is applied to the film coil 132, the magnetic rotor 110 is rotationally driven in the same manner as in the first embodiment to obtain a pumping force.

As such, when the film coil 132-1 is used, the stator iron core is not required separately, thereby miniaturizing and reducing the weight of the liquid pump, and being attached to the outer wall of the delivery pipe 160 to be completely separated from the liquid so that it is not affected by corrosion. Of course not.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

According to the liquid pump of the present invention as described above, the magnetic rotor is located in the flow path, all the parts are arranged in the coaxial axis of the magnetic rotor, and the magnetic rotor exerts a pumping force, so miniaturization is possible. .

In addition, since the liquid pump itself has a cooling function of the mechanical friction portion, the cooling efficiency is excellent, and since the stator installed outside is separately installed on the outer wall of the delivery pipe through which the fluid flows, durability and lifespan are improved.

In addition, liquid coils with film coils eliminate the need for iron cores, which eliminates the need for winding, making them easy to manufacture, and compact and lightweight.The magnetic rotor has no iron cores, so the moment of inertia is responsive. Can exert.

Claims (13)

delete delete delete delete delete delete delete A liquid pump installed in the flow path, A hollow delivery tube (160) having a liquid inlet (170) at one end and a liquid outlet (180) at the other end in communication therewith and connected to the flow path; A magnetic rotor (110) rotatably supported and located in the delivery pipe (160); Pumping means for causing a pressure difference in the delivery pipe (160) while rotating coaxially with the magnetic rotor (110); A stator 132 installed on an outer wall of the delivery pipe 160 to surround the magnetic rotor 110 and forming one or more phases that generate magnetism by electricity supply; Liquid pump, characterized in that the surface of the magnetic rotor (110) or the pumping means is further formed with a corrosion protection layer coated with a synthetic resin to prevent corrosion. A liquid pump installed in the flow path, A hollow delivery tube (160) having a liquid inlet (170) at one end and a liquid outlet (180) at the other end in communication therewith and connected to the flow path; A magnetic rotor (110) rotatably supported and located in the delivery pipe (160); Pumping means for causing a pressure difference in the delivery pipe (160) while rotating coaxially with the magnetic rotor (110); A stator 132 installed on an outer wall of the delivery pipe 160 to surround the magnetic rotor 110 and forming one or more phases that generate magnetism by electricity supply; The pumping means is composed of a spiral channel (110a) formed on the outer circumferential surface of the magnetic rotor 110, the spiral channel (110a) is made of a non-magnetic material in order to prevent corrosion and improve workability is made of the magnetic rotor Liquid pump, characterized in that. A liquid pump installed in the flow path, A hollow delivery tube (160) having a liquid inlet (170) at one end and a liquid outlet (180) at the other end in communication therewith and connected to the flow path; A magnetic rotor (110) rotatably supported and located in the delivery pipe (160); Pumping means for causing a pressure difference in the delivery pipe (160) while rotating coaxially with the magnetic rotor (110); A stator 132 installed on an outer wall of the delivery pipe 160 to surround the magnetic rotor 110 and forming one or more phases to generate magnetism by electricity supply; The helical channel formed in the magnetic rotor (110) is a liquid pump, characterized in that the depth of the helical channel is formed deeper from the liquid inlet 170 to the liquid outlet (180). delete As a liquid pump installed in the flow path, A hollow delivery tube (160) having a liquid inlet (170) at one end and a liquid outlet (180) at the other end in communication therewith and connected to the flow path; A magnetic rotor (110) rotatably supported and located in the delivery pipe (160); Pumping means for causing a pressure difference in the delivery pipe (160) while rotating coaxially with the magnetic rotor (110); A stator 132 installed on an outer wall of the delivery pipe 160 to surround the magnetic rotor 110 and forming one or more phases that generate magnetism by electricity supply; The stator 132 is a liquid pump, characterized in that consisting of a film coil (132-1) laminated with a copper foil and an insulating film. delete

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