CN217362759U

CN217362759U - Novel oil-cooled motor

Info

Publication number: CN217362759U
Application number: CN202121501731.6U
Authority: CN
Inventors: 王阳; 邓程亮; 陈晶晶; 狄勋; 陆细彪
Original assignee: Mc Motor Technology (shenzhen) Co ltd
Current assignee: Mc Motor Technology (shenzhen) Co ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2022-09-02
Anticipated expiration: 2031-07-02

Abstract

The utility model discloses a novel oil-cooled motor, which comprises a casing for accommodating a stator and a rotor, and a front end cover and a rear end cover which are respectively arranged at the two ends of the casing, wherein an annular runner groove for cooling oil to flow is radially arranged in the casing along the casing; and an axial runner groove for cooling oil to flow is formed in the outer surface of the stator along the axial direction of the stator. The radial runner groove of the casing and the axial runner groove on the surface of the stator are combined, so that the flow resistance of the runner groove is reduced, and the motor is more uniform in heat dissipation and high in efficiency.

Description

Novel oil-cooled motor

Technical Field

The utility model relates to the technical field of electric motor, in particular to novel oil-cooled motor.

Background

The development of modern industry has higher and higher requirements on the performance of the motor, and the problem of heat loss of the motor restricts the design development of a large-capacity motor. The cooling method of the motor is divided into an internal cooling and a surface cooling according to whether the cooling medium passes through the inside of the motor. The small and medium-sized motors usually adopt a surface cooling mode due to the limitation of volume. Depending on the cooling medium, the electric machine can be divided into air cooling and liquid cooling, wherein liquid cooling again includes water or oil cooling. Air cooling operation cost is low, and friction loss is big, and the radiating efficiency is low, commonly uses in the motor structure that energy density is low, generates heat less. The water has conductivity, so the water-cooled motor can not directly cool the winding in the motor, and the heat generated by the heating components in the motor can be taken away by the cooling water only by the heat transfer mode.

The oil cooling mode of the current main flow motor is generally that a runner groove for cooling oil to flow is arranged in an interlayer formed between a motor shell and a stator, and the runner groove is generally divided into two types: first, along the axial runner channel of the casing or stator; the second is to form annular runner slots along the radial direction of the stator or the casing. The runner grooves of the two structures have more corners and larger flow resistance, so that the heat dissipation effect of the motor is not ideal. In addition, the oil inlet and the oil outlet are generally in a mode of multiple inlets and multiple outlets or one inlet and multiple outlets, and the oil way is complex and not beneficial to control.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to solve at least the above problems and to provide at least the advantages which will be described later.

The utility model discloses it is still another purpose to provide a novel oil-cooled motor, combines together the radial runner groove of casing and the axial runner groove on stator surface for runner groove flow resistance reduces, and direct cooling motor inner winding and other parts that generate heat, motor heat dissipation are more even and efficient.

To achieve these objects and other advantages in accordance with the present invention, a novel oil-cooled motor is provided, including a housing for accommodating a stator and a rotor, and a front end cover and a rear end cover respectively disposed at two ends of the housing, wherein an annular runner groove for flowing cooling oil is disposed in the housing along a radial direction of the housing; and an axial runner groove for cooling oil to flow is formed in the outer surface of the stator along the axial direction of the stator.

Preferably, in the novel oil-cooled motor, an oil storage tank is arranged on the casing; the oil storage tank is communicated with the annular runner groove and the axial runner groove respectively.

Preferably, in the novel oil-cooled motor, oil inlets penetrating to the annular runner groove and the axial runner groove are respectively formed in the casing, the front end cover and the rear end cover; an oil outlet is arranged on the oil storage tank.

Preferably, in the novel oil-cooled motor, 4 oil inlets are formed; the oil outlet sets up 1.

Preferably, in the novel oil-cooled motor, 4 oil inlets include a first oil inlet arranged in the middle of the top end of the shell, a second oil inlet arranged in the middle of the top end of the front end cover, and a third oil inlet and a fourth oil inlet arranged on two sides of the top end of the rear end cover.

Preferably, in the novel oil-cooled motor, an oil change port is further arranged on the oil storage tank.

The utility model discloses at least, include following beneficial effect:

novel oil-cooled motor, two into one with two kinds of oil-cooled structures of present mainstream motor, set up to the casing and adopt radial annular runner, and the stator surface adopts the mode of axial runner, through the rational arrangement of two kinds of runners for the flow resistance that the coolant oil flows in the runner inslot is showing and is reducing, and is even efficient to the heat dissipation of motor.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic structural view of the novel oil-cooled motor of the present invention;

fig. 2 is a schematic view of the flow direction of the cooling oil in the novel oil-cooled motor of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1 and fig. 2, the present invention provides a novel oil-cooled motor, which includes a casing 1 for accommodating a stator 2 and a rotor 3, and a front end cover 4 and a rear end cover 5 respectively disposed at two ends of the casing 1, wherein an annular runner groove 6 for flowing cooling oil is radially disposed in the casing 1 along the casing 1; an axial runner groove 7 for flowing cooling oil is arranged on the outer surface of the stator 2 along the axial direction of the stator 2.

In the above scheme, novel oil-cooled motor unites two into one two kinds of oil-cooled structures of present mainstream motor, sets up to the casing and adopts radial annular runner, and the stator surface adopts the mode of axial runner, through the rational arrangement of two kinds of runners for the flow resistance that coolant oil flows in the runner inslot is showing and is reducing, and is efficient even to the heat dissipation of motor.

In a preferred scheme, an oil storage tank 8 is arranged on the machine shell 1; the oil storage tank 8 is respectively communicated with the annular runner groove 6 and the axial runner groove 7.

In the scheme, the oil storage tank is arranged on the machine shell, and compared with a structure that the oil storage tank is separated from the machine shell, the connection between the parts is reduced, so that the stability of the machine shell is better.

In a preferred scheme, oil inlets penetrating to the annular runner groove 6 and the axial runner groove 7 are respectively formed in the machine shell 1, the front end cover 4 and the rear end cover 5; an oil outlet 9 is formed in the oil storage tank 8.

In the above scheme, through the setting of a plurality of oil inlets and oil-out, make oil circuit distributes extensively in the casing, is convenient for carry out comprehensive cooling to the motor.

In a preferable scheme, 4 oil inlets are arranged; oil outlet 9 sets up 1.

In the scheme, the oil way is controlled more flexibly and conveniently by setting four inlets and one outlet of the oil way, and then the flow of the stator, the rotor and the front and rear bearings can be cooled by independent control under the reasonable arrangement of the oil inlet.

In a preferred scheme, the 4 oil inlets include a first oil inlet 10 disposed in the middle of the top end of the housing 1, a second oil inlet 11 disposed in the middle of the top end of the front end cover 4, and a third oil inlet 12 and a fourth oil inlet 13 disposed on two sides of the top end of the rear end cover 5.

In the scheme, the cooling oil flows into the axial runner groove from the first oil inlet arranged in the middle of the top end of the shell, so that a good cooling effect can be achieved on the stator core and the winding; a second oil inlet arranged in the middle of the top end of the front end cover flows into the annular runner groove, so that a good cooling effect on the front end bearing can be achieved; the oil flows into the annular runner groove from a third oil inlet arranged on the left side of the top end of the rear end cover, and a good cooling effect can be achieved on the rotor; and a fourth oil inlet arranged on the right side of the top end of the rear end cover flows into the annular runner groove, so that a rear end bearing can be well cooled. Through the rational arrangement of the position of four oil inlets promptly, can cool off both ends winding, make its cooling effect better, simultaneously for to the stator, the rotor, the flow of front and back bearing can carry out the independent control cooling, the control of oil circuit is nimble more convenient.

In a preferred embodiment, an oil change port 14 is further disposed on the oil storage tank 8.

In the scheme, the oil changing port is arranged on the oil storage tank, so that the cold oil can be conveniently supplemented and changed.

While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, particular embodiments, but rather to those skilled in the art, having the benefit of the teachings of the present invention, which is capable of numerous modifications and alternative forms, and will be readily apparent to those skilled in the art, and it is not intended to limit the invention to the details shown and described without departing from the general concepts defined by the appended claims and their equivalents.

Claims

1. A novel oil-cooled motor comprises a casing for accommodating a stator and a rotor, and a front end cover and a rear end cover which are respectively arranged at two ends of the casing, and is characterized in that,

an annular runner groove for cooling oil to flow is arranged in the casing along the radial direction of the casing; and an axial runner groove for cooling oil to flow is formed in the outer surface of the stator along the axial direction of the stator.

2. The novel oil-cooled motor of claim 1, wherein an oil storage tank is arranged on the machine shell; the oil storage tank is communicated with the annular runner groove and the axial runner groove respectively.

3. The novel oil-cooled motor of claim 2, wherein the casing, the front end cover and the rear end cover are respectively provided with oil inlets which are communicated with the annular runner groove and the axial runner groove; an oil outlet is arranged on the oil storage tank.

4. The novel oil-cooled motor of claim 3, wherein 4 oil inlets are provided; the oil outlet sets up 1.

5. The novel oil-cooled motor of claim 4, wherein the 4 oil inlets include a first oil inlet disposed in the middle of the top end of the housing, a second oil inlet disposed in the middle of the top end of the front end cover, and a third oil inlet and a fourth oil inlet disposed on both sides of the top end of the rear end cover.

6. The novel oil-cooled motor as claimed in claim 2, wherein an oil change port is further provided on the oil storage tank.