CN218276262U

CN218276262U - Direct-drive brushless motor isolation pump structure

Info

Publication number: CN218276262U
Application number: CN202222402976.4U
Authority: CN
Inventors: 龚名甫
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-01-10
Anticipated expiration: 2032-09-09

Abstract

The utility model discloses a direct drive brushless motor keeps apart pump structure, including casing, impeller, magnet, separation sleeve, iron core, winding and controller, the separation sleeve is located will in the casing, will first space and second space are cut apart into to the inside space of casing, be equipped with import and export on the lateral wall in first space, be equipped with the back shaft in the first space, the impeller is located on the back shaft, magnet is fixed in on the impeller, magnet encircles the back shaft sets up, iron core, winding and controller are located in the second space, the iron core sets up to cyclic annular, its place plane perpendicular to the back shaft, and be on a parallel with magnet place plane, the winding lay flatly in the iron core is close to on a side of magnet. Compared with the prior art, the utility model has the advantages of small, stability is high.

Description

Direct-drive brushless motor isolation pump structure

Technical Field

The utility model relates to a field of pump, in particular to direct drive formula brushless motor buffer pump structure.

Background

Most of traditional brushless motor pumps adopt brushless motors, and use shafts to transmit power to drive rotor impellers to work, so that the output of flow and pressure is realized. As shown in fig. 1 and 2, it mainly comprises a pump casing a1, an impeller a2, a front end cover a3, a pump head a4, a brushless motor assembly a5, a junction box a6, a circuit board a7, a heat conducting member a8, etc. This kind of design brushless motor subassembly a5 is cylindrical stator and rotor commonly used, and output mainly relies on the axle to transmit the impeller, and the pump is bulky, and liquid need flow to the rotor below, and the impurity in the liquid is easy to be here accumulated, leads to the rotor card to die after long-time. The system has the defects of large transmission space, low reliability and the like, and cannot meet the requirements of small volume, high performance and high reliability of the conventional thermal management system. In view of this, the utility model people of this application obtain a direct drive formula brushless motor buffer pump structure through intensive research.

Disclosure of Invention

The utility model aims at providing a direct drive formula brushless motor buffer pump structure, it has small, the high advantage of stability.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a direct drive brushless motor keeps apart pump structure, includes casing, impeller, magnet, separation sleeve, iron core, winding and controller, the separation sleeve is located will in the casing first space and second space are cut apart into to the inside space of casing, be equipped with import and export on the lateral wall in first space, be equipped with the back shaft in the first space, the impeller is located on the back shaft, magnet is fixed in on the impeller, magnet encircles the back shaft sets up, iron core, winding and controller are located in the second space, the iron core sets up to cyclic annular, its place plane perpendicular to the back shaft, and be on a parallel with magnet place plane, the winding lay flatly in the iron core is close to on a side of magnet, the winding with controller electric connection.

In a preferred embodiment, the winding is a three-phase winding.

In a preferred embodiment, the housing includes a volute, a pump body, and a connection bolt with which the volute and the pump body are connected.

In a preferred embodiment, a seal is further included, the seal being disposed between the isolation sleeve and an inner wall of the housing.

In a preferred embodiment, the seal is made of a rubber material.

In a preferred embodiment, the magnet comprises a plurality of blocks, the impeller is provided with a plurality of circumferentially distributed mounting grooves, and the blocks are arranged in the mounting grooves in a one-to-one correspondence manner.

In a preferred embodiment, the magnet is provided in a ring shape, the impeller is provided with an annular mounting groove, and the magnet is disposed in the annular mounting groove.

Compared with the prior art, the utility model provides a direct-drive brushless motor isolation pump structure, which is controlled by a controller, and realizes effective protection of an internal circuit structure by respectively arranging a rotor and an electron in a first space and a second space which are separated; the problem that the driving force and the driving space of the motor and the impeller are overlarge is solved, the size of the pump is reduced, and the cost is reduced; meanwhile, the stator is designed without tooth grooves, the structure is simple, the installation is convenient, the tooth groove torque of the motor is eliminated, the motor torque is more stable, the electromagnetic noise is obviously reduced, the performance and the reliability are improved, and the mass production performance is better.

Drawings

Fig. 1 is a structural view of a conventional brushless motor pump.

Fig. 2 is a schematic view of a magnetic circuit of a conventional brushless motor (arrows in the figure represent the directions of the magnetic circuits).

Fig. 3 is a schematic structural diagram of a direct-drive brushless motor isolation pump structure.

Fig. 4 is a schematic magnetic circuit diagram of a direct-drive brushless motor isolation pump structure (arrows in the figure represent magnetic circuit directions).

Fig. 5 is the utility model relates to a direct drive formula brushless motor keeps apart iron core structure schematic diagram of pump structure.

Fig. 6 is a winding structure diagram of a direct-drive brushless motor isolation pump structure.

Fig. 7 is a schematic view of a magnet mounting manner of a direct-drive brushless motor isolation pump structure.

Fig. 8 is a schematic view of another magnet of a direct-drive brushless motor isolated pump structure according to the present invention.

In the figure

A pump casing a1; an impeller a2; a front end cap a3; a pump head a4; a brushless motor assembly a5; a junction box a6; a circuit board a7; a heat conductive member a8; a volute 1; an inlet 2; an outlet 3; a pump body 4; a connecting bolt 5; a first space 6; a support shaft 7; a second space 8; an impeller 9; a placement groove 10; an annular mounting groove 11; a magnet 12; partitioning 13; an insulating sleeve 14; an iron core 15; a winding 16; a controller 17; a seal 18.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

As shown in fig. 3 to 8, a direct-drive brushless motor isolated pump structure includes a casing, an impeller 9, a magnet 12, an isolating sleeve 14, an iron core 15, a winding 16, and a controller 17, where the isolating sleeve 14 is disposed in the casing to divide the space inside the casing into a first space 6 and a second space 8, the sidewall of the first space 6 is provided with an inlet 2 and an outlet 3, the first space 6 is provided with a supporting shaft 7, the impeller 9 is disposed on the supporting shaft 7, the magnet 12 is fixed on the impeller 9, the magnet 12 is disposed around the supporting shaft 7, the iron core 15, the winding 16, and the controller 17 are disposed in the second space 8, the iron core 15 is disposed in a ring shape, the plane of the iron core 15 is perpendicular to the supporting shaft 7 and parallel to the plane of the magnet 12, the winding 16 is laid on a side of the iron core 15 close to the magnet 12, and the winding 16 is electrically connected to the controller 17.

The direct-drive brushless motor isolation pump structure of the embodiment is controlled by the controller 17, a rotating magnetic field is generated by the rotation of the iron core 15 and the winding 16, the magnet 12 is driven to rotate, so that the impeller 9 is driven to rotate, and the rotor and the electrons are respectively arranged in the first space 6 and the second space 8 which are separated from each other, so that the internal circuit structure is effectively protected; the problem that the driving force and the driving space of the motor and the impeller 9 are overlarge is solved, the size of the pump is reduced, and the cost is reduced; meanwhile, the stator is designed without tooth grooves, the structure is simple, the installation is convenient, the tooth groove torque of the motor is eliminated, the motor torque is more stable, the electromagnetic noise is obviously reduced, the performance and the reliability are improved, and the mass production performance is better.

Specifically, the windings 16 are three-phase windings 16, and each set of windings 16 is formed by circumferential arrays, is flattened and is stacked together, so that the electromagnetic density of the motor can be effectively improved.

Further, the casing includes a volute 1, a pump body 4 and a connecting bolt 5, and the volute 1 and the pump body 4 are connected by the connecting bolt 5.

In order to realize strict isolation of the first space 6 and the second space 8, the direct-drive brushless motor isolation pump structure of the embodiment further comprises a sealing element 18, wherein the sealing element 18 is arranged between the isolation sleeve 14 and the inner wall of the shell, and isolates the iron core 15, the winding 16 and the controller 17 from the outside, so that a good waterproof and dustproof effect is achieved. Specifically, the sealing member 18 is made of a rubber material, which is substantially a sealing ring.

The magnet 12 can be made of rare earth materials such as neodymium iron boron and ferrite, can be molded on the impeller 9 by injection, and can also be installed on the impeller 9 by embedding.

Further, the magnet 12 may be provided in the form of a plurality of blocks 13, the impeller 9 is provided with a plurality of circumferentially distributed mounting grooves 10, the plurality of blocks 13 are one-to-one disposed in the mounting grooves 10, and the plurality of blocks 13 are uniformly distributed, that is, may be provided in 4, 6, 8, 10, or the like.

Or the magnet 12 may be provided in an annular shape and may be made of injection-molded magnetic material, the impeller 9 is provided with an annular mounting groove 11, and the magnet 12 is disposed in the annular mounting groove 11.

The outside of the magnet 12 may be covered with a shell to protect the magnet 12 from liquid or gas.

The foregoing description of the embodiments is provided to enable one of ordinary skill in the art to make and use the invention and is provided for enabling those of ordinary skill in the art to make and use the invention as provided within the appended claims. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. The utility model provides a direct drive brushless motor keeps apart pump structure, its characterized in that, includes casing, impeller, magnet, separation sleeve, iron core, winding and controller, the separation sleeve is located will in the casing first space and second space are cut apart into to the inside space of casing, be equipped with import and export on the lateral wall in first space, be equipped with the back shaft in the first space, the impeller is located on the back shaft, magnet is fixed in on the impeller, magnet encircles the back shaft sets up, iron core, winding and controller are located in the second space, the iron core sets up to cyclic annular, its place plane perpendicular to the back shaft, and be on a parallel with magnet place plane, the winding lay in the iron core is close to on a side of magnet, the winding with controller electric connection.

2. The isolated pump structure of claim 1, wherein said windings are three-phase windings.

3. The isolated pump structure of claim 1, wherein the housing comprises a volute, a pump body and a connecting bolt, and the volute and the pump body are connected by the connecting bolt.

4. The isolated pump structure of claim 1, further comprising a seal disposed between the isolation sleeve and an inner wall of the housing.

5. The isolated pump structure of claim 4, wherein the sealing element is made of rubber.

6. The isolated pump structure of claim 1, wherein the magnet comprises a plurality of segments, the impeller is provided with a plurality of circumferentially distributed mounting slots, and the segments are correspondingly disposed in the mounting slots one to one.

7. The isolated pump structure of claim 1, wherein said magnet is disposed in a ring shape, said impeller is disposed with an annular mounting groove, and said magnet is disposed in said annular mounting groove.