KR101752055B1 - Ventilative channel steel as well as manufacturing method, ventilating structure and motor thereof - Google Patents

Abstract

The present invention provides a ventilation groove shape, a manufacturing method thereof, a ventilation structure, and a motor. The ventilation groove of the present invention includes a ventilation groove-shaped main body including a radial wind induction section and a lateral wind induction section, and the lateral wind induction section is connected to the wind wind section of the radial wind induction section Wherein the wind direction inducing section is provided in the lateral wind induction section, the wind induction surface is distributed on both sides of an extension line of the radial wind induction section, and the wind induction surface is a wind induction section of the radial wind induction section It is possible to guide the flowing gas to both sides of the extension line of the radial wind induction section. According to the present invention, it is possible to induce the cooling gas to both sides of the ventilation groove-shaped steel, and thereby, by using the ventilation-groove-shaped steel, The cooling gas can be intensively cooled with respect to the windward side of the windings so that the cooling gas flows through the cross-section of the windward side of the windings on both sides of the ventilation groove shaped steel, and the temperature of the local hot spot can be reduced.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation groove, a manufacturing method thereof, a ventilation structure and a motor,

TECHNICAL FIELD The present invention relates to cooling of a motor, and more particularly, to a ventilation groove shape, a manufacturing method thereof, a ventilation structure, and a motor.

When a motor (including an electric motor and a generator) is operated, energy is consumed in a member such as a coil and an iron core, and the consumption of this part is finally radiated in the form of heat energy. If the ventilation design of the motor is not reasonable, The temperature of the motor excessively increases or the temperature rise partially becomes non-uniform. If the temperature rises excessively, the insulation will deteriorate due to the aging of the insulation, resulting in a deterioration in the insulation performance of the insulation. Partially, if the temperature rise is not uniform, a very large thermal stress is generated, causing permanent damage to the motor structure, . Therefore, decreasing the temperature rise of the motor has an important meaning in increasing the safety margin of the motor, extending the service life of the motor, and reducing the maintenance cost of the motor.

Radial ventilation cooling is one of the common cooling schemes for small and medium sized generators. Such cooling schemes have been widely used because they increase the heat dissipation area and improve the power density of the motor. In order to achieve radial ventilation, the iron core of the motor is generally divided into a plurality of core segments, and between the adjacent core segments there is provided a ventilation groove (or "vent strip") along the radial direction of the motor , And the ventilation groove section serves to support each core segment and divides the space between adjacent core segments into a ventilation groove (or a "radial ventilation channel "), and the ventilation groove has a radial direction Thereby cooling and dissipating the iron core and the windings. The generally used ventilation grooves are generally rectangular in cross-section and the cross-section of the " elliptical "venting grooves is" Quot; or "ellipse " shape.

In the process of realizing the above technical solution, the inventor has discovered that at least the following problems exist in the existing technologies.

The design of existing vent grooves and vent structures did not specifically pay attention to the effect of the vent grooves on the cooling effect of the cooling gas. Existing ventilation grooves only serve to support and form the ventilation grooves between adjacent core segments. Due to the heat exchange between the cooling gas and the winding wire, the iron core and the ventilation groove, the temperature of the cooling gas gradually increases when flowing through the ventilation groove. As a result, the cooling effect of the windings is nonuniform in the radial direction, the local hot spot may exist in the windings, and the higher the temperature is, the more the temperature becomes closer to the wind wind side. In particular, It is disadvantageous in securing the service life.

It is an object of the present invention to provide a ventilation groove shaped steel in which a cooling gas can intensively cool the windward side of a winding and a manufacturing method thereof and to provide a ventilation structure and a motor that can be cooled intensively on the windward side of a winding will be.

In order to achieve the above object, the present invention comprises a ventilated-slotted steel main body including a radial wind induction section and a lateral wind induction section, wherein the lateral wind induction section is in contact with the wind wind section of the radial wind induction section Wherein the wind direction inducing section is provided in the lateral wind induction section, the wind induction surface is distributed on both sides of an extension line of the radial wind induction section, and the wind induction surface is a wind induction section of the radial wind induction section The present invention provides a ventilation groove-shaped steel capable of guiding a flowing gas to both sides of an extension line of the radial wind induction section.

Here, the lateral wind induction section may be integrally connected to the wind wind section of the radial wind induction section.

Advantageously, the lateral wind induction section may include two curved sections in which the wind inducing surface is distributed.

Wherein the radial wind induction section includes two strip-shaped sections, a gap is provided between the two strip-shaped sections, and the two curved sections are respectively connected to the windward sections of the two strip- Lt; / RTI >

Further, the distance between the opposite ends of the two strip-shaped sections may be less than, equal to, or longer than the distance between the two sections of the two strip-like sections.

Here, it is preferable that the inclined angle between the curved section and the strip-shaped section, which are connected to each other, be 120 ° to 160 °.

Wherein a gap is left between the central portion of the lateral wind induction section and the wind wind ends of the radial wind induction section and the wind inducing surface is installed on a side opposite to the radial wind induction section of the lateral wind induction section .

Here, it is preferable that a plurality of teeth are provided on the side of the radial wind induction section.

Here, the wind direction of the radial wind induction section is located in the head portion, and the width of the head portion can be gradually decreased along the direction toward the wind direction.

Preferably, the radial wind induction section and / or the lateral wind induction section may include a stamped steel in which a plurality of radial wind induction sections and / or the lateral wind induction sections are stacked together.

The present invention comprises at least two core segments including a yoke portion and a plurality of teeth connected to the yoke portion, wherein between adjacent tooth portions of the same core segment constitute a groove for receiving a winding, Wherein the radial wind induction section of the vented slotted section steel is located between corresponding tooth sections of the adjacent core segments and the lateral wind induction section of the vented slotted section Section provides a ventilation structure located between the yoke portions of the core segments adjacent to each other.

The present invention provides a motor including the ventilation structure.

The present invention relates to a method of manufacturing a press mold, comprising: placing a semi-finished product in a mold cavity of a press mold; And a step of extruding the semi-finished product to obtain the ventilation groove shaped steel.

The present invention also provides a method of manufacturing a stamping machine, comprising the steps of: stamping a plurality of stamping steels; And stacking the plurality of stamping steels together and stacking the plurality of stamping steels with the ventilation groove shaped steel.

The ventilation groove shape steel provided by the present invention mainly has the following advantageous effects.

The lateral wind induction section designed in the wind direction of the radial wind induction section can induce the cooling gas to the both sides of the ventilation groove section, thereby enabling the cooling gas to flow to the both sides of the ventilation groove section, It is possible to intensively cool the windward side of the winding so that the temperature of the local hot spot can be reduced.

The ventilation structure and the motor provided by the present invention have the above-described advantage of the ventilation groove shape, and can be intensively cooled with respect to the windward side of the winding, the temperature of the local hot spot can be reduced, .

The manufacturing method of the ventilation groove shape steel provided by the present invention is simple in the manufacturing process and easy to realize, and the ventilation groove shape steel produced and produced has the above advantages.

1 is a structural schematic diagram of a ventilation groove-shaped steel according to Embodiment 1 of the present invention.
2 is a structural schematic diagram of a ventilation groove-shaped steel according to Embodiment 2 of the present invention.
3 is a structural schematic diagram of a ventilation groove-shaped steel of Embodiment 3 of the present invention.
4 is a structural schematic diagram of a ventilation groove shape steel according to Embodiment 4 of the present invention.
5 is a structural schematic diagram of a ventilation groove-shaped steel according to Embodiment 5 of the present invention.
Fig. 6 is a schematic view showing a ventilation groove of an embodiment 6 of the present invention in an exploded perspective view.
7 is a perspective view schematically showing the ventilation groove section of the seventh embodiment of the present invention.
8 is a schematic cross-sectional view of the ventilation groove-shaped steel of the seventh embodiment of the present invention.
9 is a flowchart of a method of manufacturing a ventilation groove-shaped steel according to the eighth embodiment of the present invention.
10 is a flowchart of a method of manufacturing a ventilation groove-shaped steel according to the ninth embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

Example 1

As shown in Fig. 1, Fig. 1 is a structural schematic view of a ventilation groove-shaped steel according to Embodiment 1 of the present invention. The ventilation groove of Embodiment 1 of the present invention includes a ventilation groove shaped steel main body 11 including a radial wind induction section 111 and a lateral wind induction section 112 and includes a lateral wind induction section 112 (The radial wind induction section 111 has a reverse wind stage 121 and a wind wind stage 122), and the reverse wind wind stage 121 is in contact with the wind wind wind direction 122 of the radial wind induction section 111 The wind direction inducing section 1121 is provided in the lateral wind induction section 112 and the wind induction surface 1121 is provided in the lateral wind induction section 112, The air guide surface 1121 is distributed on both sides of the extension line of the radial wind induction section 111 and the air induction surface 1121 is formed on the both sides of the radial wind induction section 111, To the both sides of the extension line of the base 111.

The ventilation channel of the embodiment 1 of the present invention is different from the conventional ventilation ducts of the prior art and the strip ventilation ducts in that a lateral wind induction section designed to the wind wind stage of the radial wind induction section 111 The cooling gas can be guided to the both sides of the ventilation groove-shaped steel, so that the cooling gas flows through the cross-section of the windward side of both windings of the ventilation groove-shaped steel by using the ventilation- The cooling gas can be circulated in the radial direction of the wind induction section 111, and the cooling air can be radiated to the outside of the radial wind induction section 111. [ And then flows into the ventilation grooves on both sides of the radial wind induction section 111. After the cooling gas passes through the wind wind stage 122 of the radial wind induction section 111, And the cooling gas is "curbed" and turned to both sides of the ventilation groove-shaped steel. The airflow after the scouring flows through the cross-section of the windward side of the winding to intensively cool the local hot spot have.

The " extension line " in the present embodiment can be understood as an extension line of the center line. It should be noted that since the airflow itself has continuity, "contact with each other" in the present embodiment is not interpreted as being limited to "connecting with each other", but also includes the case of "connecting with each other" The lateral wind induction section 112 may be spaced apart from the wind wind stage 122 of the radial wind induction section 111. The term " , The flow of the cooling gas is all continuous and can flow from both the windward end 122 of the radial wind induction section 111 to the lateral wind induction section 112, Will be implemented.

In addition to the features described above, the vented-slotted steel of the present embodiment further includes other features, and will be described below.

In the present embodiment, the lateral wind induction section 112 is integrally connected to the wind wind stage 122 of the radial wind induction section 111, the radial wind induction section 111 is an integrated structure, The section 112 is also an integrated structure. Therefore, the overall ventilation groove steel main body 11 is entirely an integrated structure, and such a whole integrated structure can use press molding or primary extrusion molding.

In this embodiment, the lateral wind induction section 112 is symmetrical with respect to the radial wind induction section 111, the wind induced effect achieved by the symmetrical structure is also symmetrical, and the symmetrical structure also has an aesthetic sense. Specifically, the lateral wind induction section 112 of the present embodiment shows an isosceles trapezoid, and the wind induction surface 1121 is divided into two parts and positioned on two sides of the isosceles trapezoidal structure, respectively.

In the present embodiment, a plurality of teeth 13 are provided on the side surface of the radial wind induction section 111, and between the radial wind induction section 111 and the cooling gas flowing through the ventilation grooves using the teeth 13, It is possible to effectively break the boundary layer of the cooling gas and make the degree of turbulence of the cooling gas remarkably high and make it possible for the cooling gas and the radial wind induction section 111 and the windings on the sides thereof to sufficiently contact each other, Strengthen the heat dissipation effect. In addition, the teeth 13 enlarge the boundary of the radial wind inducing section 111 to increase the heat radiating area, thereby enhancing the heat radiation of the radial wind inducing section 111 itself, and also the serrated structure itself Can be easily produced. Specifically, the shape of the teeth 13 is not limited to the illustrated shape, but may be a triangular saw tooth, a ripple saw tooth, a rectangular saw tooth, or the like. In this embodiment, since the teeth are also provided on the wind inducing surface 1121, the air flow of the toothed surface of the wind inducing surface 1121 is disturbed to enhance the cooling effect and increase the heat dissipating area.

The reverse wind end 121 of the radial wind induction section 111 in the present embodiment is located in the head portion and the width of the head portion gradually decreases along the direction toward the reverse wind end 121. [ This design can provide good wind induction and reduce wind resistance, effectively reducing the temperature of the motor windings without increasing resistance to the motor cooling system. Specifically, the surfaces on both upper ends of the windward end 121 of the radial wind induction section 111 may be planar, and an inclined angle is provided between the two planar surfaces. In the present embodiment, the subtended angle is an acute angle. However, this included angle can also be designed with an obtuse angle, the acute angle is better than the obtuse angle. In addition, the sides of both upper ends of the reverse wind end 121 of the radial wind induction section 111 may be designed as curved surfaces and may be designed, for example, as elliptical curved surfaces, i.e., a radial wind induction section 111 Can be an elliptic arc shape, which can also reduce wind resistance.

Example 2

As shown in Fig. 2, Fig. 2 is a structural schematic diagram of a ventilation groove-shaped steel of Embodiment 2 of the present invention. The radial wind induction section 111 of the present embodiment is also an integrated structure. The lateral wind induction section 112 of the present embodiment is also integrally connected to the wind wind end 122 of the radial wind induction section 111. If the difference is the lateral wind induction section 112 of the present embodiment, But includes two curved sections 1122 in which the wind inducing surface 1121 is distributed. This structure can reduce the weight of the ventilation groove-shaped steel in comparison with the first embodiment.

Example 3

As shown in Fig. 3, Fig. 3 is a structural schematic diagram of the ventilation groove-shaped steel of the third embodiment of the present invention. The lateral wind induction section 112 of the present embodiment is integrally connected to the wind wind stage 122 of the radial wind induction section 111 and the lateral wind induction section 112 also includes two curved sections 1122 do. The radial wind induction section 111 of the present embodiment is no longer an integrated structure and the radial wind induction section 111 of the present embodiment includes two strip type sections 1111, The two curved sections 1122 are integrally connected to the winded ends 122 of the two strip-shaped sections 1111 with an interval between the sections 1111. As a result, the entire ventilation groove is divided into two parts, so that the contact area between the ventilation groove-shaped steel and the cooling gas can be increased, the heat radiation effect to the ventilation groove-shaped steel is reinforced and the passage between the two strip- It can act to lower wind resistance. It is preferable that the angle of inclination (corresponding to the symbol [theta] in the drawing) between the curved section 1122 and the strip-shaped section 1111 which are mutually connected can be 120 ° to 160 °.

The present embodiment is also provided with a plurality of teeth 13 on the side surface of the radial wind induction section 111. Since the powder design is used, the teeth 13 of this embodiment are provided on the side of the strip-shaped section 1111 facing the gap. The width of the head portion of the radial wind induction section 111 in the present embodiment also gradually decreases along the direction toward the windward end 121 in order to reduce wind resistance. The surfaces on both sides of the uppermost end of the windward wind stage 121 of the radial wind induction section 111 are also planar and since the powder design is used, these two planes are installed in two strip-like sections 1111, respectively.

The distance between the reverse windings 121 of the two strip-shaped sections 1111 of the present embodiment (corresponding to the symbol a in the drawing) and the winded ends 122 of the two strip-shaped sections 1111 Quot; b " in Fig. However, by adjusting the positions of the two strip-like sections 1111 based on whether the center heat radiation portion of the winding is the groove of the iron core or the groove bottom, the distance between the opposite wind ends 121 of the two strip- It is possible to make it shorter or longer than the distance between the winded ends 122 of the two strip-shaped sections 1111.

Example 4

As shown in Fig. 4, Fig. 4 is a structural schematic diagram of the ventilation groove-shaped steel of the fourth embodiment of the present invention. The main distinction between the ventilation groove steel of the present embodiment and the above embodiment is as follows. The lateral wind induction section 112 of the present embodiment is not integrally connected to the radial wind induction section 111 but is connected to the center of the lateral wind induction section 112 and the radial wind induction section 111 The wind guide surface 1121 is spaced apart from the wind direction induction section 112 of the side wind direction induction section 112 by a distance Respectively. Here, the wind inducing surface 1121 of the lateral wind induction section 112 may also act to guide the cooling wind to both sides. Such a short one-side short powder structure has a simple structure, is easy to process, and can reduce production cost. The distance e in this embodiment is preferably 2 mm to 10 mm. Specifically, the lateral wind induction section 112 in this embodiment represents a straight strip shape and is perpendicular to the radial wind induction section 111. [

Example 5

As shown in FIG. 5, FIG. 5 is a structural schematic diagram of a ventilation groove-shaped steel of Example 5 of the present invention. The distinction between the ventilation groove-shaped steel of this embodiment and the ventilation groove-shaped steel of the fourth embodiment is as follows. The lateral wind induction section 112 of this embodiment shows a curved shape protruding from the radial wind induction section 111, and the wind inducing surface 1121 also serves to guide the cooling wind to both sides. As can be seen, the lateral wind induction section 112 may have a constant radian or may be designed with a conversion structure.

Example 6

As shown in Fig. 6, Fig. 6 is a schematic view showing an exploded perspective view of the ventilation groove section of the sixth embodiment of the present invention. The distinction between the ventilation groove-shaped steel of this embodiment and the ventilation-groove-shaped steel of the above embodiment is as follows. The radial wind induction section 111 and / or the lateral wind induction section 112 of the present embodiment includes a plurality of stacked stamping steels 113 stacked together. The stamping steel structure laminated together is applied to mass production, and the production cost can be greatly reduced. Specifically, the stamping steel is first stamped based on the required shape, and then a plurality of stamping steels are compression-molded to obtain the radial wind inducing section 111 and / or the lateral wind inducing section 112. For example, if the final thickness of the vent groove is 8 mm, it can be stamped with 8 stamping steels, one stamping steel thickness of 1 mm each, then pressing them (or pushing them together) It is made of groove steel.

Concretely, in the ventilation grooves (for example, Example 1 and Example 2) in which the radial wind inducing section 111 and the lateral wind inducing section 112 are integrated, their stamping strengths are integrated . That is, the stamping steel is provided with a radial wind guiding section stamping steel portion and a lateral wind guiding section stamping steel portion. In the ventilation groove shape steel (for example, the fourth embodiment and the fifth embodiment) in which the radial wind inducing section 111 and the lateral wind inducing section 112 are not an integrated structure, these are not the stamping strength integrated structures. That is, the radial wind induction section 111 and the lateral wind induction section 112 can freely form a plurality of stamping steels by pressing them. In the ventilation groove shape steel having the powder design according to the third embodiment and in which the curved section 1122 is integrally connected to the strip type section 1111, the plurality of stamped steel pieces 113 can be divided into two sets, The stamping steel 113 may include a strip-shaped section stamped steel section 1131 and a curved section stamped steel section 1132.

As described above, the ventilation grooves of the respective embodiments of the present invention have been described. As can be seen from the above description, the ventilation groove shape steel provided by the present invention has a relatively large degree of freedom. For example, the ventilation groove shape steel may be integrally formed or formed of powder. Alternatively, teeth can be formed on both sides of the ventilation groove-shaped steel main body, and the shape of the teeth is not limited to the illustrated shape. Alternatively, the uppermost portion of the ventilation groove shape steel may exhibit an acute angle or arc shape. Alternatively, the upper and lower widths of the radial wind induction section may be the same or different, and may be adjusted depending on whether the core heat radiation region of the winding is a groove groove or groove bottom. Alternatively, the lateral wind induction section may be a vertical strip shape or a curved shape. Since the ventilation groove shape steel provided by the present invention is easily realized, it is possible to easily adjust the design of the ventilation groove shape steel to satisfy various practical cooling and heat radiation requirements.

On the basis of the feature that the ventilation groove shape steel provided by the present invention has teeth, the ventilation groove shape steel provided by the present invention can also be referred to as "serrated ventilation groove shape steel", but it should be noted that " "Is a generalized name for motor cooling technology, which distinguishes itself from" home steel "steels in which the cross-section of other fields is groove-like, and the material itself is not limited to" steel " It may also be a metal with a relatively high thermal conductivity. Hereinafter, the ventilation structure of the embodiment of the present invention will be described.

Example 7

As shown in FIGS. 7 and 8, FIG. 7 is a perspective view of a ventilation structure according to a seventh embodiment of the present invention, and shows a shape when viewed from the outside of the ventilation structure. FIG. 8 is a schematic cross-sectional view of a ventilation structure according to a seventh embodiment of the present invention, and shows a shape when observed inside a ventilation structure. The ventilation structure of an embodiment of the present invention includes at least two (e. G., Three shown in the figure) core segments 2, the core segments having a plurality of (Not shown in the drawings, for example), and the teeth 21 of the same core segment are disposed between adjacent teeth 21 of the same core segment, (Filled with the windings 3), and the ventilation grooves of any of the above embodiments are provided between the adjacent core segments 2, and the radial wind induction section 111 of the ventilation groove section 1 Is located between the corresponding tooth portions 21 of the adjacent core segments 2 and the lateral wind induction section 112 of the ventilation groove shaped steel 1 is located at the yoke portion of the adjacent core segment 2 22).

When the ventilation structure of this embodiment is operated, the cooling gas flows along the direction indicated by the dotted arrow in Fig. 8 in the ventilation groove, and under the guidance of the lateral wind induction section 112 as it flows out of the ventilation groove, (The surface corresponding to the bottom of the groove in the drawing) of the winding 3, the temperature of the portion can be intensively lowered, and a relatively large thermal stress can be prevented from appearing at the position.

As a result of verification simulation using the flow field calculation software on the basis of the above structure and examining it through an experimental platform, the inventors have found that the ventilation grooves of the above-mentioned different embodiments have a 5 to 10K motor The temperature rise of the windings can be effectively reduced, which can greatly increase the safety margin of the motor, extend its service life and reduce maintenance costs. If the temperature rise of the motor is kept unchanged, it can be combined with the optimized design of the motor to increase the power density, reduce the weight, and reduce the cost. For example, if it is designed according to the motor insulation class B and the unchanged temperature rise of 90K is maintained, 5% of the amount of copper used can be saved directly by arranging the ventilation groove.

In this embodiment, a slot wedge 4 for fastening the windings 3 in the grooves is further connected between the teeth 21 adjacent to each other, thereby preventing occurrence of displacement in the radial direction. Specifically, the core segment 2 of the present embodiment may be a core segment (referred to as an "iron core" or a "iron core") of the stator core and may be a core segment of the rotor core. In the ventilation structure of some motors, a ventilation groove plate is further provided between the adjacent core segments 2. In this case, the ventilation groove of the above embodiment can be welded to the ventilation groove plate by a welding process such as spot welding.

The ventilation structure provided in this embodiment can be applied to a motor such as a conventional air-cooled generator, an electric motor and the like. For example, the ventilation structure can be applied to a large wind power generator, a small- Not only significantly improves but also realizes the process easily and has a wide range of application prospects. Hereinafter, a method for manufacturing a ventilation groove-shaped steel according to an embodiment of the present invention will be described, and the above drawings can be referred to when reading out the method for manufacturing the ventilation-groove shaped steel of the embodiment of the present invention.

Example 8

As shown in Fig. 9, Fig. 9 is a flowchart of a method of manufacturing a ventilation groove-shaped steel according to the eighth embodiment of the present invention. In the manufacturing method of this embodiment,

Step 101 of placing the semi-finished product in the mold cavity of the press mold;

And a step 102 of extruding the semi-finished product to obtain the ventilation groove-shaped steel 1.

The extrusion in the method of manufacturing the ventilation groove shape steel of the present embodiment is easy to realize, can be primary molded, and the manufacturing process is simple, and can be used for manufacturing the ventilation groove shape steel of any one of the first to fifth embodiments.

Specifically, in step 101, the shape of the mold cavity of the press mold can be interlocked with the contour of the ventilation groove shape of the above-described first to fifth embodiments. In step 102, extrusion can be performed on the semi-finished product using an extruder.

Example 9

As shown in Fig. 10, Fig. 10 is a flowchart of a method of manufacturing a ventilation groove-shaped steel according to the ninth embodiment of the present invention. In the manufacturing method of this embodiment,

A step 201 of stamping a plurality of stamped steels 113;

Stacking the plurality of stamping steels together and stacking them with the ventilation groove shaped steel 1.

The stamping and stacking process of the stamping steel in the manufacturing method of the ventilation groove shape steel of the present embodiment can be easily realized and the manufacturing process is simple and can be used for manufacturing the ventilation groove shape steel of the embodiment 6, The main body 11 is not an integrated structure. The manufacturing method of the ventilation groove shaped steel of this embodiment is suitable for mass production, and the production cost can be greatly reduced. Specifically, in step 201, a plurality of stamping steels 113 can be stamped using a stamping machine.

In view of the above, the preferred technical solution provided in the embodiment of the present invention has at least the following features.

1. The present invention uses a wind inducing structure symmetrical in the bottom portion of the ventilation groove steel to guide the cooling wind to both sides to cool the local hot spot and to strengthen the region with poor heat radiation effect, Can be reduced.

2. It is possible to increase the heat dissipation area of the ventilation grooves and to reduce the wind resistance by using the powder shape design.

3. By adding a sawtooth structure to both sides, the boundary layer between the grooved steel and the cooling air can be effectively broken, the turbulence effect can be enhanced, and the heat radiation effect can be maximized. At the same time, by opening the teeth, the boundary of the ventilation groove can be enlarged and the heat radiation area can be increased.

4. The head portion of the ventilation channel can be of a sharp-tipped type (may be acute or arc-shaped), may have a good wind induction effect, and the temperature of the motor winding Can be effectively reduced.

5. The stamped steel structure can be used for mass production.

It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. All of which are within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the present invention.

1: Ventilation groove shape steel 11: Ventilation groove shape steel body
111: Radial wind induction section 1111: Strip section
112: lateral wind induction section 1121: wind induction surface
1122: Curved section 113: Stamping steel
1131: Strip type section stamping steel section 1132: Curved section stamping steel section
121: wind direction 122: wind direction
13: tooth 2: core segment
21: tooth portion 22: yoke portion
3: winding 4: slot wedge

Claims (14)

A radial wind induction section including two strip-like sections, a gap between the two strip-like sections, a radial wind induction section including a radial wind induction section and a lateral wind induction section, Wherein the lateral wind induction section includes two curved sections in which the wind guide surfaces are distributed, the two curved sections being integrally connected to the wind wind ends of the two strip-shaped sections, Wherein the radial wind induction section includes a plurality of radial wind induction sections, a plurality of radial wind induction sections, and a plurality of radial wind induction sections, A plurality of teeth are provided on the wind guide surface, Ventilation groove beams characterized in that includes a plurality of teeth that are open. The method according to claim 1,
Wherein the lateral wind induction section is integrally connected to the wind wind stage of the radial wind induction section. delete delete The method according to claim 1,
Wherein the distance between the opposite ends of the two strip-shaped sections is less than, equal to, or greater than the distance between the two ends of the two strip-like sections. The method according to claim 1,
Wherein the mutually connected curved section and the strip-shaped section have a subtended angle of 120 ° to 160 °. The method according to claim 1,
There is a gap between the center of the lateral wind induction section and the wind wind stage of the radial wind induction section and the wind inducing surface is provided on the side opposite to the radial wind induction section of the lateral wind induction section Wherein the ventilation groove is formed of a metal. delete The method according to claim 1,
Wherein the wind direction of the radial wind induction section is located at the head portion, and the width of the head portion is gradually decreased along the direction toward the wind direction. The method according to claim 1,
Wherein the radial wind induction section and / or the lateral wind induction section includes a stamping steel in which a plurality of radial wind induction sections and / or the lateral wind induction sections are stacked together. And at least two core segments including a yoke portion and a plurality of teeth connected to the yoke portion,
Wherein between adjacent tooth portions of the same core segment constitute grooves for receiving a winding, and between adjacent core segments, there are provided the grooves for receiving windings according to any one of claims 1, 2, 5, 6, 7, 9, A ventilation duct according to any one of the preceding claims, wherein the radial wind induction zone of the ventilation channel is located between corresponding tooth portions of the adjacent core segments, And the wind induction section is located between the yoke portions of the core segments adjacent to each other. A motor comprising a ventilation structure according to claim 11. Placing the semi-finished article in a mold cavity of a press mold;
The method according to any one of claims 1, 2, 5, 6, 7, and 9, further comprising the step of extruding the semi-finished product to obtain the ventilation- (Manufacturing method of grooved section steel). Stamping a plurality of stamped steels;
And stacking the plurality of stamping steels together and stacking the plurality of stamping steels with the ventilation groove shaped steel. ≪ RTI ID = 0.0 > 11. < / RTI >

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