CN218102892U - Heat exchange structure for cooling motor - Google Patents

Abstract

The utility model provides a heat exchange structure of a cooling motor, which comprises a shell and a heat exchange groove arranged at the bottom of the shell, wherein the heat exchange groove and the shell are integrated; the shell is provided with a water cooling channel, and cooling oil is contained in the heat exchange groove, so that heat exchange is carried out between the cooling oil and the shell; a plurality of bulges are arranged in the heat exchange groove. The heat exchange groove and the shell are integrated, so that liquid in the heat exchange groove can directly exchange heat with the shell for cooling, and when the liquid in the heat exchange groove is cooling oil, the shell is provided with the water cooling channel, which is equivalent to heat exchange between the cooling oil and cooling water, and the heat exchange effect is good; and because a separate heat exchange part is omitted, the overall cost of the motor is reduced. The protrusions arranged in the heat exchange grooves increase the contact area between the cooling oil and the heat exchange grooves, so that the heat exchange effect is enhanced.

Description

Heat exchange structure for cooling motor

Technical Field

The utility model relates to a motor cooling technical field especially relates to a heat transfer structure of cooling motor.

Background

The loss generated in the operation process of the motor is mainly divided into mechanical loss and electrical loss, wherein the electrical loss is divided into stator loss and rotor loss. Stator losses include stator core losses and winding losses, and the main cause of these losses is motor overheating. When the bridge continuously runs with large torque, the iron loss is increased because the iron loss is in direct proportion to the square of the magnetic flux density, so that the iron core is overheated; the increase of the magnetic flux can increase the magnetic current component, which causes the copper loss of the stator winding to increase and the winding to overheat. If the temperature of the heat generating components exceeds the allowable temperature, the motor can fail and even burn out.

The cooling scheme of prior art carries out water-cooling and oil cooling to the motor simultaneously, but needs additionally to set up a heat exchanger, comes water-cooling and oil cooling to carry out the heat transfer, and the cost is higher.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical defect, the utility model aims to provide a heat exchange structure of cooling motor.

The utility model discloses a heat exchange structure of a cooling motor, which comprises a shell and a heat exchange groove arranged at the bottom of the shell, wherein the heat exchange groove and the shell are integrated; the shell is provided with a water cooling channel, and cooling oil is contained in the heat exchange groove, so that heat exchange is carried out between the cooling oil and the shell; a plurality of bulges are arranged in the heat exchange groove.

Preferably, an oil return opening is formed in the bottom of the heat exchange groove, and cooling oil after heat exchange flows out of the heat exchange groove from the oil return opening.

Preferably, the bottom surface of the heat exchange groove is a concave shape with two symmetrical ends, and the oil return port is arranged at the lowest position in the middle of the concave shape.

Preferably, the bottom surface of the heat exchange groove is inclined at one end, and the oil return port is arranged at the lowest position of one end of the bottom surface.

Preferably, the protrusions are cylindrical or column-shaped, and a plurality of cylindrical protrusions/column-shaped protrusions are arranged in a staggered manner.

Preferably, the protrusions are sheet-type, the heat exchange groove is divided into a plurality of sub-grooves by a plurality of sheet-type protrusions, and the sub-grooves are communicated with one another.

Preferably, the plate-type protrusions are arranged in a staggered manner, so that a baffling-type heat exchange loop is formed in the heat exchange tank.

Preferably, the bottom surface of the heat exchange groove is rectangular or polygonal.

After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:

1. the heat exchange groove and the shell are integrated, so that liquid in the heat exchange groove can directly exchange heat with the shell for cooling, and when the liquid in the heat exchange groove is cooling oil, the shell is provided with the water cooling channel, which is equivalent to heat exchange between the cooling oil and the cooling water, and the heat exchange effect is good; and because a separate heat exchange part is omitted, the overall cost of the motor is reduced.

2. The contact area between the cooling oil and the heat exchange groove is increased by the bulges arranged in the heat exchange groove, so that the heat exchange effect is enhanced.

Drawings

FIG. 1 is a schematic view of a heat exchange groove structure of a cylindrical protrusion provided by the present invention;

FIG. 2 is a schematic view of a heat exchange groove structure of the plate-type protrusions provided by the present invention;

fig. 3 is a schematic diagram of the oil path direction of the sheet-type convex heat exchange groove provided by the present invention.

Wherein: 1-heat exchange groove, 2-oil return port, 3-cylindrical protrusion and 4-sheet protrusion.

Detailed Description

The advantages of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if," as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination," depending on the context.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being 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.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

In the following description, suffixes such as "module", "part", or "unit" used to indicate elements are used only for the convenience of description of the present invention, and have no specific meaning in itself. Thus, "module" and "component" may be used in a mixture.

The utility model discloses a heat transfer structure of cooling motor, generally, there are two kinds of cooling methods of oil cooling and water-cooling to the cooling motor, when oil cooling and water-cooling are integrated simultaneously, need carry out the heat transfer to coolant oil and cooling water. The oil temperature is effectively reduced.

In a preferred embodiment, referring to fig. 1, both ends of the stator are water-cooled, and the windings at both ends of the stator are oil-cooled, because the stator windings generate more heat and the area of the cooling oil for cooling the stator windings is smaller, and the stator surface generates heat and the area of the cooling water for cooling the stator surface is larger, the temperature of the cooling oil is higher than that of the cooling water when the system is in operation. At the moment, the cooling oil and the cooling water can be arranged for heat exchange, so that the oil temperature is effectively reduced.

Specifically, the utility model provides a heat transfer structure of cooling motor includes the casing and locates the heat transfer groove 1 of casing bottom, and heat transfer groove 1 is integrative with the casing, and the shaping of can high pressure casting earlier adds man-hour, adopts modes such as welding to carry out reliable connection again with the casing. The shell is provided with a water cooling channel. Be used for holding the cooling oil after cooling stator winding in the heat transfer groove 1, because heat transfer groove 1 and casing are integrative, then the cooling oil is equivalent to directly carrying out the heat transfer with the casing in heat transfer groove 1 promptly for carry out the heat transfer between cooling oil and the casing, again because be equipped with water-cooling channel on the casing and carry out the water-cooling, then be equivalent to carrying out the heat transfer between cooling oil and the cooling water, reduce the temperature of cooling oil by the cooling water. And because a separate heat exchange part is omitted, the overall cost of the motor system is reduced.

A plurality of bulges are arranged in the heat exchange groove 1 and used for increasing the contact area of the cooling oil and the heat exchange groove 1, so that the heat exchange effect is effectively improved.

Preferably, the bottom of the heat exchange groove 1 is provided with an oil return port 2, and the cooling oil after heat exchange flows out of the heat exchange groove 1 from the oil return port 2.

Preferably, the bottom surface of the heat exchange tank 1 is concave with two symmetrical ends, which can be understood as that the bottom surface of the heat exchange tank 1 is concave, and the lowest part of the concave is in the middle of the bottom surface of the heat exchange tank 1, so that the bottom surface is symmetrical with the lowest part as the center. Under the structure, the oil return port 2 is arranged at the lowest position in the middle of the concave type, so that cold area oil in the heat exchange groove 1 can flow out from the heat exchange groove 1.

And a preferred embodiment is matched, cooling oil flows into the heat exchange grooves 1 from two ends of the heat exchange grooves 1, and when the oil return port 2 is arranged at the lowest part of the concave bottom surface, the cooling oil at two ends can flow into half of the heat exchange grooves 1 to carry out maximum heat exchange, and then flows out of the heat exchange grooves 1 from the oil return port 2 in the middle.

Preferably, the bottom surface of the heat exchange tank 1 is inclined at one end, and it can be understood that one end of the bottom surface of the heat exchange tank 1 is higher and the other end is lower, and the oil return port 2 is arranged at the lowest position of the lower end of the bottom surface, so that the cold zone oil in the heat exchange tank 1 can flow out from the heat exchange tank 1.

It should be noted that, in the structure in which the cooling oil flows into the heat exchange tank 1 from both ends, the "high and low ends" may not coincide with the "both ends" into which the cooling oil flows, but should be the side edges thereof, so as to prevent the cooling oil from flowing out of the heat exchange tank 1 without heat exchange.

And further, the oil return opening 2 should also be arranged in the middle of the side edge.

Preferably, the protrusions are cylindrical, and referring to fig. 2, a plurality of cylindrical protrusions 3 are regularly arranged in the horizontal direction and the vertical direction. In other embodiments, the plurality of cylindrical protrusions 3 may be arranged in a staggered manner in the horizontal or vertical direction, so that the cooling oil can contact the protrusions more thoroughly.

In embodiments not shown in the drawings, the protrusions may also be posts, i.e. the protrusions are rectangular in cross-section. Similarly, the column-type protrusions can be regularly arranged in the horizontal direction and the vertical direction, or alternatively arranged in the horizontal direction or the vertical direction in a staggered manner, so that the cooling oil can be more thoroughly contacted with the protrusions.

Preferably, the protrusions are plate-type protrusions, referring to fig. 3, the heat exchange tank 1 is divided into a plurality of sub-tanks by a plurality of plate-type protrusions 4, and the sub-tanks are communicated with each other to form a serial heat exchange loop, so that the flow speed of the cooling oil in the heat exchange tank 1 is increased.

Specifically, the plate-type protrusions 4 are arranged in a staggered manner, so that a baffling-type heat exchange loop is formed in the heat exchange tank 1.

In contrast to the above, the plate-type protrusions 4 may also form a spiral heat exchange loop in the heat exchange tank 1.

Preferably, the bottom surface of the heat exchange tank 1 is rectangular, and in other embodiments, the bottom surface of the heat exchange tank 1 may also be polygonal, such as hexagonal.

It should be noted that the embodiments of the present invention have better practicability and are not intended to limit the present invention in any way, and any person skilled in the art may change or modify the technical contents disclosed above to equivalent effective embodiments, but all the modifications or equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.

Claims (8)

1. The heat exchange structure of the cooling motor is characterized by comprising a shell and a heat exchange groove arranged at the bottom of the shell, wherein the heat exchange groove and the shell are integrated;

the shell is provided with a water cooling channel, and cooling oil is contained in the heat exchange groove, so that heat exchange is carried out between the cooling oil and the shell;

a plurality of bulges are arranged in the heat exchange groove.

2. The heat exchange structure according to claim 1, wherein an oil return port is formed at the bottom of the heat exchange tank, and the cooling oil after heat exchange flows out of the heat exchange tank through the oil return port.

3. The heat exchange structure of claim 2, wherein the bottom surface of the heat exchange groove is a concave shape with two symmetrical ends, and the oil return port is arranged at the lowest position of the middle part of the concave shape.

4. The heat exchange structure of claim 2, wherein the bottom surface of the heat exchange tank is inclined at one end, and the oil return port is disposed at the lowest position of one end of the bottom surface.

5. The heat exchange structure of claim 1, wherein the protrusions are cylindrical or vertical columns, and a plurality of cylindrical/vertical column protrusions are arranged in a staggered manner.

6. The heat exchange structure of claim 1, wherein the protrusions are plate-type protrusions, and a plurality of plate-type protrusions divide the heat exchange slot into a plurality of sub-slots, and the sub-slots are communicated with each other.

7. The heat exchange structure of claim 6, wherein the fin-type protrusions are staggered so that a baffled heat exchange loop is formed in the heat exchange tank.

8. The heat exchange structure of claim 1, wherein the bottom surface of the heat exchange groove is rectangular or polygonal.

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