CN210985873U - Oil-cooled motor - Google Patents

Abstract

The utility model discloses an oil-cooled motor, which comprises a casing and internal components arranged in the casing; the top of the shell is provided with an oil inlet for introducing cooling oil into the shell, and the bottom of the shell is provided with an oil outlet; the oil collecting tank is arranged at the bottom of the machine shell; an oil storage cavity is defined in the oil collecting tank, and an oil outlet is communicated with the oil storage cavity; the cooling oil enters the interior of the machine shell through the oil inlet and flows into the oil storage cavity from the oil outlet after cooling and heat dissipation are carried out on internal components, so that the cooling oil is accumulated in the oil storage cavity. The utility model discloses a bottom at the casing sets up the sump oil tank, lets in the inside coolant oil of motor and flows in the oil storage intracavity of sump oil tank after flowing through the internals, has avoided the coolant oil to overstock and the motor vibration that leads to in the motor inside, has extended the life of motor.

Description

Oil-cooled motor

Technical Field

The utility model relates to the technical field of motors, the more specifically oil-cooled motor that says so.

Background

When the motor runs, a large amount of heat can be generated by a motor main body (components such as an iron core), and the service performance, the service life and the like of the motor are greatly influenced due to overhigh temperature. At present, cooling oil is generally adopted to dissipate heat of a motor, the motor which dissipates heat through the cooling oil is called as a cold oil motor, but the cooling oil in the existing cold oil motor cannot be discharged in time and can be extruded inside the motor, so that the motor vibrates during operation, and the service life of the motor is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a cold motor of oil.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an oil-cooled motor comprises a shell and internal components arranged in the shell; the top of the shell is provided with an oil inlet for introducing cooling oil into the shell, and the bottom of the shell is provided with an oil outlet; the oil collecting tank is arranged at the bottom of the machine shell; an oil storage cavity is defined in the oil collecting tank, and the oil outlet is communicated with the oil storage cavity; the cooling oil enters the interior of the machine shell through the oil inlet and flows into the oil storage cavity from the oil outlet after the internal components are cooled and radiated, so that the cooling oil is accumulated in the oil storage cavity.

The further technical scheme is as follows: the oil collecting tank and the machine shell are of an integrated forming structure.

The further technical scheme is as follows: the internal component comprises an iron core, a first sliding bearing and a second sliding bearing, wherein the first sliding bearing and the second sliding bearing are positioned at two ends of the iron core; the oil inlets are a plurality of first oil inlets, second oil inlets and third oil inlets; the oil outlets are multiple and respectively comprise a first oil outlet, a second oil outlet, a third oil outlet and a fourth oil outlet; the cooling oil introduced from the first oil inlet flows to the first sliding bearing and flows into the oil storage cavity from the first oil outlet; the cooling oil introduced from the second oil inlet flows to the second sliding bearing and flows into the oil storage cavity from the second oil outlet; and the cooling oil introduced from the third oil inlet flows to the iron core and flows into the oil storage cavity from the third oil outlet and the fourth oil outlet.

The further technical scheme is as follows: the surface of the iron core is provided with a plurality of axial bulges arranged along the axial direction of the iron core and a plurality of circumferential bulges arranged along the circumferential direction of the iron core; a first end face flange extends from one axial end face of the iron core along the radial direction of the iron core, and a second end face flange extends from the other axial end face of the iron core along the radial direction of the iron core; a plurality of branch oil passages for flowing of cooling oil are formed by the plurality of axial protrusions, the plurality of circumferential protrusions, the first end face flange and the second end face flange; the surface of the iron core is also provided with an axial groove along the axial direction of the iron core, and the axial groove forms a main oil way for cooling oil to enter; oil path inlets of the branch oil paths are communicated with the main oil path, and oil path outlets of the branch oil paths are positioned on the first end surface baffle edge and/or the second end surface baffle edge; the third oil inlet is positioned above the main oil way.

The further technical scheme is as follows: the four branch oil paths are respectively a first branch oil path, a second branch oil path, a third branch oil path and a fourth branch oil path; the oil way inlets of the first branch oil way and the third branch oil way are positioned on one side of the main oil way, and the oil way inlets of the second branch oil way and the fourth branch oil way are positioned on the other side of the main oil way.

The further technical scheme is as follows: oil path outlets of the first oil path and the second oil path are positioned on the first end surface baffle edge, and oil path outlets of the third oil path and the fourth oil path are positioned on the second end surface baffle edge; the oil path outlets of the first branch oil path and the second branch oil path correspond to the position of the third oil outlet, and the oil path outlets of the third branch oil path and the fourth branch oil path correspond to the position of the fourth oil outlet.

The further technical scheme is as follows: the iron core is equipped with the oil groove along its circumference direction, the oil groove surround in the circumference surface of iron core, be equipped with on the iron core and be provided with a plurality of oil through holes around its central interval, the oil through hole runs through the axial length of iron core and with the oil groove communicates with each other.

The further technical scheme is as follows: the oil groove is located in the center of the axial direction of the iron core.

The further technical scheme is as follows: the iron core is equipped with a plurality of oil grooves, a plurality of along its axial direction the oil groove encircles in the peripheral surface of iron core, the length of oil groove with the same and both ends of oil groove of axial length of iron core are the opening form.

The further technical scheme is as follows: the oil grooves are uniformly and alternately arranged around the outer peripheral surface of the iron core.

Compared with the prior art, the utility model beneficial effect be: the utility model provides a pair of oil-cooled motor sets up the sump oil tank through the bottom at the casing, lets in the oil storage intracavity that flows into the sump oil tank after the inside coolant oil of motor flows through the internals, has avoided the coolant oil to overstock in the motor and the motor vibration that leads to, has extended the life of motor.

The foregoing is a summary of the present invention, and other objects, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments, which is provided for the purpose of illustration and understanding of the present invention.

Drawings

Fig. 1 is a diagram of an apparatus according to a first embodiment of the oil-cooled motor of the present invention;

fig. 2 is an exploded view of a first embodiment of an oil-cooled electric machine according to the present invention;

fig. 3 is a schematic view of a portion of a casing of an oil-cooled motor according to an embodiment of the present invention;

fig. 4 is a partial schematic view of a housing according to an embodiment of the present invention;

fig. 5 is a second schematic view (another view) of a part of a casing of a first embodiment of an oil-cooled motor according to the present invention;

fig. 6 is a perspective view of an iron core in an embodiment of an oil-cooled motor according to the present invention;

fig. 7 is a perspective view of an iron core in another view angle according to an embodiment of the oil-cooled motor of the present invention;

fig. 8 is a perspective view of an iron core in a second embodiment of the oil-cooled motor of the present invention;

fig. 9 is a perspective view of an iron core in a third embodiment of the oil-cooled motor of the present invention.

Detailed Description

In order to more fully understand the technical content of the present invention, the technical solution of the present invention will be further described and illustrated with reference to the following specific embodiments, but not limited thereto.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "secured" are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

Example one

The utility model provides an oil-cooled motor, please refer to fig. 1 and 5, which comprises a casing 1 and internal components arranged in the casing 1; the top of the machine shell 1 is provided with an oil inlet for introducing cooling oil into the machine shell 1, and the bottom of the machine shell 1 is provided with an oil outlet; the oil collecting tank 2 is arranged at the bottom of the machine shell 1; an oil storage cavity 21 is defined in the oil collecting tank 2, and an oil outlet is communicated with the oil storage cavity 21; the cooling oil enters the interior of the machine shell 1 through the oil inlet to cool and dissipate heat of internal components, and then flows into the oil storage cavity 21 from the oil outlet, so that the cooling oil is accumulated in the oil storage cavity 21. Because the oil collecting tank 2 is arranged, the vibration of the motor caused by the accumulation of cooling oil in the motor is avoided, and the service life of the motor is prolonged.

Preferably, the oil collecting tank 2 and the machine shell 1 are of an integral molding structure for the convenience of manufacturing and the reduction of production cost. Of course, in other embodiments, a split manufacturing may be used, followed by assembly.

Specifically, referring to fig. 2-4, the inner member includes an iron core 3, and a first sliding bearing 4 and a second sliding bearing 5 located at two ends of the iron core 3; the number of the oil inlets is multiple, and the oil inlets are respectively a first oil inlet 11, a second oil inlet 13 and a third oil inlet 12; a plurality of oil outlets are respectively a first oil outlet 14, a second oil outlet 15, a third oil outlet 16 and a fourth oil outlet 17; the cooling oil introduced from the first oil inlet 11 flows to the first sliding bearing 4 and flows into the oil storage chamber 21 from the first oil outlet 14; the cooling oil introduced from the second oil inlet 13 flows to the second sliding bearing 5 and flows into the oil storage cavity 21 from the second oil outlet 15; the cooling oil introduced from the third oil inlet 12 flows toward the core 3 and flows into the oil storage chamber 21 from the third oil outlet 16 and the fourth oil outlet 17. In the motor, the heat productivity of the iron core 3 and the bearing is large, and therefore, the cooling oil is mainly introduced to dissipate the heat of the iron core 3 and the bearing. Through letting in the cooling oil from different oil inlets respectively to realized dispelling the heat to bearing and iron core 3, it should explain that, the oil inlet sets up at casing 1 top, and the oil-out sets up in casing 1's bottom, and the purpose of doing so is that the area that the cooling oil flowed on bearing or iron core 3 is wide or the time of flowing is long, thereby the radiating effect is better.

Referring to fig. 6 and 7, the surface of the iron core 3 is provided with a plurality of axial protrusions arranged along the axial direction of the iron core 3, and a plurality of circumferential protrusions arranged along the circumferential direction of the iron core 3; a first sliding bearing 36 is arranged on one axial end surface of the iron core 3 in an extending manner along the radial direction of the iron core 3, and a second end surface rib 37 is arranged on the other axial end surface of the iron core 3 in an extending manner along the radial direction of the iron core 3; the plurality of axial protrusions, the plurality of circumferential protrusions, the first sliding bearing 36 and the second end face rib 37 constitute a plurality of branch oil paths for the flow of cooling oil; the surface of the iron core 3 is also provided with an axial groove 31 along the axial direction, and the axial groove 31 forms a main oil way for cooling oil to enter; the oil path inlets of the branch oil paths are communicated with the main oil path, and the oil path outlets of the branch oil paths are positioned on the first sliding bearing 36 and/or the second end face flange 37; the third oil inlet 12 is located above the main oil passage. Through a plurality of oil circuit that branch that form on the surface of iron core 3, the cooling oil flows through the surface of iron core 3 through a plurality of oil circuit to realized fully having dispelled the heat to iron core 3, the cooling effect is good, and need not to set up extra spare part and assist the heat dissipation, the cost is reduced.

In this embodiment, the number of the branch oil passages is four, and the branch oil passages are a first branch oil passage 32, a second branch oil passage 33, a third branch oil passage 34 and a fourth branch oil passage 35; oil path inlets of the first branch oil path 32 and the third branch oil path 34 are located on one side of the main oil path, and oil path inlets of the second branch oil path 33 and the fourth branch oil path 35 are located on the other side of the main oil path. Further, an oil passage outlet 361 of the first oil passage and an oil passage outlet 362 of the second oil passage are located on the first end face rib 36, and an oil passage outlet 371 of the third oil passage and an oil passage outlet 372 of the fourth oil passage are located on the second end face rib 37. The oil path outlets of the first branch oil path 32 and the second branch oil path 33 correspond to the position of the third oil outlet 16, and the oil path outlets of the third branch oil path 34 and the fourth branch oil path 35 correspond to the position of the fourth oil outlet 17.

Preferably, the first slide bearing 36 and the second end face rib 37 are of the same height. The height of the axial projections and the circumferential projections is less than or equal to the height of the first sliding bearing 36.

In other embodiments, the number of the branch oil passages may be determined according to design requirements, for example, 2, 3, 5, etc.

Example two

The difference between the present embodiment and the first embodiment is that the oil path structure of the iron core 6 is different, referring to fig. 8, the iron core 6 of the present embodiment is provided with an oil groove 61 along the circumferential direction thereof, the oil groove 61 surrounds the circumferential surface of the iron core 6, the iron core 6 is provided with a plurality of oil through holes 62 spaced around the center thereof, and the oil through holes 62 penetrate the axial length of the iron core 6 and are communicated with the oil groove 61. Through setting up oil groove 61 in 6 circumferential directions of iron core, be equipped with the interval at axial direction and be equipped with oil through hole 62 for cooling oil flows into in the oil through hole 62 after getting into oil groove 61, thereby has realized fully dispelling the heat to iron core 6, and the cooling effect is good, and need not to set up extra spare part and assist the heat dissipation, the cost is reduced. In addition, because the oil through hole 62 is arranged in the iron core 6 and penetrates through the axial length of the iron core 6, the flowing area of the cooling oil is increased, and the heat dissipation is facilitated.

Preferably, the oil groove 61 is located at the center of the core 6 in the axial direction, so that the oil through holes 62 on both sides of the oil groove 61 have the same length, thereby facilitating uniform heat dissipation to the core 6 after the cooling oil enters the oil through holes 62. The oil through holes 62 are provided at regular intervals near the outer peripheral edge of the iron core 6, and in this embodiment, the oil through holes 62 are circular.

In some embodiments, such as the present embodiment, the iron core 6 is provided with an axial groove 63 for the flow of the cooling oil in the axial direction thereof, the axial groove 63 being located outside the oil passage hole 62. The axial grooves 63 are arranged to further improve the heat dissipation efficiency. Preferably, the bottom of the axial groove 63 is in a circular arc shape, and the circular shape is provided to facilitate the flow of the cooling oil.

EXAMPLE III

The difference between the present embodiment and the first embodiment is the oil passage structure cylinder of the iron core 7, referring to fig. 9, the iron core 7 of the present embodiment is provided with a plurality of oil grooves 71 along the axial direction thereof, the plurality of oil grooves 71 surround the outer circumferential surface of the iron core 7, the length of the oil grooves 71 is the same as the axial length of the iron core 7, and both ends of the oil grooves 71 are open. Through setting up a plurality of oil grooves 71 at iron core 7 axial direction for cooling oil carries out abundant heat dissipation to iron core 7 after getting into oil groove 71, and the cooling effect is good, and need not to set up extra spare part and assist the heat dissipation, the cost is reduced.

Preferably, a plurality of oil grooves 71 are uniformly spaced around the outer circumferential surface of the core 7, and the uniform arrangement of the oil grooves 71 facilitates uniform heat dissipation to the core 7.

Further, oil groove 71 is the U type shape, and the both sides and the bottom of oil groove 71 are 90.

The technical content of the present invention is further described by the embodiments only, so that the reader can understand it more easily, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation according to the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims (10)

1. An oil-cooled motor is characterized by comprising a shell and internal components arranged in the shell; the top of the shell is provided with an oil inlet for introducing cooling oil into the shell, and the bottom of the shell is provided with an oil outlet; the oil collecting tank is arranged at the bottom of the machine shell; an oil storage cavity is defined in the oil collecting tank, and the oil outlet is communicated with the oil storage cavity; the cooling oil enters the interior of the machine shell through the oil inlet and flows into the oil storage cavity from the oil outlet after the internal components are cooled and radiated, so that the cooling oil is accumulated in the oil storage cavity.

2. The oil-cooled motor of claim 1, wherein the oil collection tank is integrally formed with the housing.

3. An oil-cooled electric machine according to claim 1, wherein the inner member comprises an iron core, and first and second sliding bearings at opposite ends of the iron core; the oil inlets are a plurality of first oil inlets, second oil inlets and third oil inlets; the oil outlets are multiple and respectively comprise a first oil outlet, a second oil outlet, a third oil outlet and a fourth oil outlet; the cooling oil introduced from the first oil inlet flows to the first sliding bearing and flows into the oil storage cavity from the first oil outlet; the cooling oil introduced from the second oil inlet flows to the second sliding bearing and flows into the oil storage cavity from the second oil outlet; and the cooling oil introduced from the third oil inlet flows to the iron core and flows into the oil storage cavity from the third oil outlet and the fourth oil outlet.

4. The oil-cooled motor of claim 3, wherein the surface of the core is provided with a plurality of axial protrusions arranged along the axial direction of the core, and a plurality of circumferential protrusions arranged along the circumferential direction of the core; a first end face flange extends from one axial end face of the iron core along the radial direction of the iron core, and a second end face flange extends from the other axial end face of the iron core along the radial direction of the iron core; a plurality of branch oil passages for flowing of cooling oil are formed by the plurality of axial protrusions, the plurality of circumferential protrusions, the first end face flange and the second end face flange; the surface of the iron core is also provided with an axial groove along the axial direction of the iron core, and the axial groove forms a main oil way for cooling oil to enter; oil path inlets of the branch oil paths are communicated with the main oil path, and oil path outlets of the branch oil paths are positioned on the first end surface baffle edge and/or the second end surface baffle edge; the third oil inlet is positioned above the main oil way.

5. The oil-cooled motor according to claim 4, wherein the number of the branch oil paths is four, and the four branch oil paths are a first branch oil path, a second branch oil path, a third branch oil path and a fourth branch oil path; the oil way inlets of the first branch oil way and the third branch oil way are positioned on one side of the main oil way, and the oil way inlets of the second branch oil way and the fourth branch oil way are positioned on the other side of the main oil way.

6. The oil-cooled motor of claim 5, wherein the oil path outlets of the first oil path and the second oil path are located on the first end baffle edge, and the oil path outlets of the third oil path and the fourth oil path are located on the second end baffle edge; the oil path outlets of the first branch oil path and the second branch oil path correspond to the position of the third oil outlet, and the oil path outlets of the third branch oil path and the fourth branch oil path correspond to the position of the fourth oil outlet.

7. An oil-cooled motor according to claim 3, wherein the core is provided with an oil groove along a circumferential direction thereof, the oil groove surrounding a circumferential surface of the core, the core being provided with a plurality of oil passing holes spaced around a center thereof, the oil passing holes penetrating an axial length of the core and communicating with the oil groove.

8. An oil-cooled electric machine according to claim 7, wherein the oil groove is located at the center in the axial direction of the core.

9. The oil-cooled motor of claim 3, wherein the core is provided with a plurality of oil grooves along an axial direction thereof, the plurality of oil grooves surround an outer circumferential surface of the core, a length of the oil grooves is the same as an axial length of the core, and both ends of the oil grooves are open.

10. An oil-cooled machine according to claim 9, wherein a plurality of said oil sumps are spaced evenly around the outer peripheral surface of said core.

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