Integrated motor casing

Abstract

The utility model relates to an integrated motor casing which not only can improve the heat radiation effect of a frequency converter, but also can effectively improve the installation space of a frequency conversion radiator without increasing the area of an arc-shaped surface on the upper side of a cast iron motor casing, and is good in sealing performance. The cast iron cooling fin located on the uppermost portion of one side of the outer circle face of the cast iron motor shell and the cast iron cooling fin located on the uppermost portion of the other side of the outer circle face of the cast iron motor shell are arranged at the same height, and two installation bosses are arranged at the joint of the arc-shaped face of the upper side of the cast iron motor shell and the upper end face of one cast iron cooling fin located on the uppermost portion. Two installation bosses are arranged at the joint of the arc-shaped face of the upper side of the cast iron motor shell and the upper end face of the other cast iron cooling fin located at the uppermost position, a wire outlet boss is arranged on the arc-shaped face of the upper side of the cast iron motor shell, and a through hole is formed in the upper end face of the wire outlet boss. The integrated motor casing has the advantages that the heat dissipation effect of the frequency converter can be improved, and the use sealing performance is good.

Description

Technical Field

[0001] This utility model belongs to the field of motor manufacturing, specifically relating to an integrated motor housing. Background Technology

[0002] The applicant's prior patent CN 213906418 U, entitled "An Integrated Cable Outlet Base Steel Plate Housing," includes a motor housing. The motor housing is a cylindrical housing formed by rolling a steel plate. The upper end of the motor housing has a cable outlet base, which is formed by stretching a steel plate. After stretching the steel plate to form the cable outlet base, the steel plate is rolled to form the cylindrical housing. Two slits are respectively opened on both sides of the cable outlet base, and the two slits penetrate the upper and lower end faces of the steel plate. Through holes are opened on the cable outlet base, penetrating the upper and lower end faces of the steel plate. When the steel plate is rolled to form the cylindrical housing, the slits are arc-shaped and their length matches the length of the corresponding side of the cable outlet base. The edges of the cable outlet base are bent to form reinforcing ribs. Two through holes are opened on the cable outlet base. Multiple heat dissipation holes are opened on the motor housing. Multiple cable box connection holes are opened on the cable outlet base. The cable outlet base has multiple cable board mounting holes. Its drawback is that when the frequency converter is directly installed in the junction box position (i.e., the cable outlet base) within an integrated cable outlet base steel plate housing, the airflow path of the radiator at the bottom of the frequency converter is blocked by the cable outlet base, resulting in obstructed airflow at the bottom of the frequency converter and thus affecting its heat dissipation effect. Utility Model Content

[0003] Design objective: To avoid the shortcomings of the prior art, this design aims to improve the heat dissipation of the frequency converter, effectively increase the installation space of the frequency converter heat sink without increasing the area of ​​the arc surface on the upper side of the cast iron motor housing, and use a well-sealed integrated motor housing.

[0004] Design scheme: To achieve the above design objectives.

[0005] 1. The cast iron heat sink located at the top of one side of the outer circular surface of the cast iron motor housing and the top of the cast iron heat sink located on the other side of the outer circular surface of the cast iron motor housing are set at the same height. The two cast iron heat sinks are of the same thickness and their thickness is greater than that of the other cast iron heat sinks. Two mounting bosses are provided at the junction between the arc-shaped surface of the upper side of the cast iron motor housing and the upper end face of one of the top cast iron heat sinks. Two mounting bosses are provided at the junction between the arc-shaped surface of the upper side of the cast iron motor housing and the upper end face of the other top cast iron heat sink. The upper end face of the four mounting bosses is provided with threaded holes. A wire exit boss is provided on the arc-shaped surface of the upper side of the cast iron motor housing. The upper end face of the wire exit boss is provided with a through hole that extends vertically downward and penetrates the inner circular surface of the cast iron motor housing. This design is one of the technical features of this utility model. The purpose of this design is as follows: the top cast iron heat sink on one side of the outer circular surface of the cast iron motor housing and the top cast iron heat sink on the other side of the outer circular surface of the cast iron motor housing are set at the same height. The thickness of these two heat sinks is the same and greater than the thickness of the other heat sinks. Two mounting bosses are provided at the junction of the upper arc-shaped surface of the cast iron motor housing and the upper end face of one of the top cast iron heat sinks. Two mounting bosses are also provided at the junction of the upper arc-shaped surface of the cast iron motor housing and the upper end face of the other top cast iron heat sink. Threaded holes are opened on the upper end faces of the four mounting bosses. A cable exit boss is provided on the upper arc-shaped surface of the cast iron motor housing, and a through hole is provided on the upper end face of the cable exit boss, extending vertically downwards and penetrating the inner circular surface of the cast iron motor housing. Based on the gap arrangement between the inverter heat sink and the housing, the top of the housing is made into a smooth shape to leave space for the heat sink; four mounting bosses are provided at the top to fix the inverter heat sink. The radiator features a cable-exit boss at the top front of the housing to allow the motor winding leads to pass through. This creates a heat dissipation channel between the lower end face of the radiator and the upper arc-shaped surface of the cast iron motor housing after the radiator and motor housing are installed, significantly improving the radiator's heat dissipation performance. Furthermore, the two uppermost cast iron heat sinks on one side and the other side of the outer surface of the cast iron motor housing are at the same height, with the same thickness, and their thickness is greater than that of the other heat sinks. Two mounting bosses are located at the junction of the upper arc-shaped surface of the cast iron motor housing and the upper end face of one of the uppermost heat sinks, and two more mounting bosses are located at the junction of the upper arc-shaped surface of the cast iron motor housing and the upper end face of the other uppermost heat sink. This increases the effective installation space of the radiator without increasing the area of ​​the upper arc-shaped surface of the cast iron motor housing.

[0006] 2. The second technical feature of this utility model is that the thickness of the cast iron heat sink at the top of one side of the outer circular surface of the cast iron motor housing is 3mm, and the thickness of the cast iron heat sink at the top of the other side of the outer circular surface of the cast iron motor housing is 3mm, while the wall thickness of the cast iron motor housing is 5.5mm. The purpose of this design is that the thickness of the cast iron heat sink at the top of one side of the outer circular surface of the cast iron motor housing is 3mm, and the thickness of the cast iron heat sink at the top of the other side of the outer circular surface of the cast iron motor housing is 3mm, while the wall thickness of the cast iron motor housing is 5.5mm. This integrated motor housing not only has good strength but also effectively controls costs.

[0007] 3. The design of having a first annular groove on the upper surface of the cable outlet boss, with the center line of symmetry of the first annular groove coinciding with the center line of symmetry of the through hole, is the third technical feature of this utility model. The purpose of this design is that the first annular groove on the upper surface of the cable outlet boss, with the center line of symmetry of the first annular groove coinciding with the center line of symmetry of the through hole, serves to place an O-ring. This ensures a sealed connection between the cable outlet boss and the frequency converter radiator after the cast iron motor housing and the frequency converter radiator are fixedly installed, thereby improving the sealing performance of the motor assembled from an integrated motor housing.

[0008] 4. The design of having a second annular groove on the upper surface of the mounting boss, with the center line of the second annular groove coinciding with the center line of the threaded hole, is the fourth technical feature of this utility model. The purpose of this design is that the second annular groove on the upper surface of the mounting boss, with its center line coinciding with the center line of the threaded hole, ensures a sealed connection between the mounting boss and the frequency converter radiator after the cast iron motor housing and the frequency converter radiator are fixedly installed. This prevents the screws used to connect the mounting boss and the frequency converter radiator from corroding due to water ingress.

[0009] 5. The design of providing a screw hole for installing a lifting ring on each side of the outer circular surface of the cast iron motor housing is the fifth technical feature of this utility model. The purpose of this design is that providing a screw hole for installing a lifting ring on each side of the outer circular surface of the cast iron motor housing, and the setting of the lifting ring in the screw hole facilitates the hoisting and transportation of the integrated motor housing and the motor composed of the integrated motor housing.

[0010] Technical Solution: An integrated electric motor housing, comprising a cast iron motor housing, wherein multiple cast iron heat sinks are provided on the lower and two sides of the outer circular surface of the cast iron motor housing, and the cast iron heat sinks are arranged along the axial direction of the cast iron motor housing. The cast iron heat sinks on both sides of the outer circular surface of the cast iron motor housing are horizontally arranged. The uppermost cast iron heat sink on one side of the outer circular surface of the cast iron motor housing and the uppermost cast iron heat sink on the other side of the outer circular surface of the cast iron motor housing are arranged at the same height. The thickness of the two cast iron heat sinks is the same and the thickness of the two cast iron heat sinks is greater than that of the other cast iron heat sinks. The thickness of the plate, the junction between the arc-shaped surface on the upper side of the cast iron motor housing and the upper end face of one of the uppermost cast iron heat sinks is provided with two mounting bosses, the junction between the arc-shaped surface on the upper side of the cast iron motor housing and the upper end face of another uppermost cast iron heat sink is provided with two mounting bosses, the upper end face of the four mounting bosses is provided with threaded holes, the arc-shaped surface on the upper side of the cast iron motor housing is provided with a wire outlet boss, the upper end face of the wire outlet boss is provided with a through hole that extends vertically downward and penetrates the inner circular surface of the cast iron motor housing.

[0011] Compared with the prior art, the integrated motor housing of this utility model can not only improve the heat dissipation effect of the frequency converter, but also effectively increase the installation space of the frequency converter heat sink without increasing the area of ​​the arc surface on the upper side of the cast iron motor housing, while having good sealing performance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of an integrated electric motor housing. Figure 1 .

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of an integrated electric motor housing. Figure 2 .

[0014] Figure 3 This is a top view of the integrated motor housing (with the addition of the first and second annular grooves). Detailed Implementation

[0015] Example 1: Refer to Appendix Figures 1-3An integrated electric motor housing includes a cast iron motor housing 1. Multiple cast iron heat sinks 2 are provided on the lower and both sides of the outer circular surface of the cast iron motor housing 1, and the heat sinks 2 are arranged along the axial direction of the cast iron motor housing 1. The cast iron heat sinks 2 located on both sides of the outer circular surface of the cast iron motor housing 1 are horizontally arranged. The uppermost cast iron heat sink 2 on one side of the outer circular surface of the cast iron motor housing 1 and the uppermost cast iron heat sink 2 on the other side of the outer circular surface of the cast iron motor housing 1 are at the same height. The thickness of these two heat sinks 2 is the same, and the thickness of these two heat sinks 2 is greater than the thickness of the other heat sinks 2. Two mounting bosses 3 are provided at the junction of the arc-shaped surface on the upper side of the cast iron motor housing 1 and the upper end face of one of the uppermost cast iron heat sinks 2. Two mounting bosses 3 are also provided at the junction of the arc-shaped surface on the upper side of the cast iron motor housing 1 and the upper end face of another uppermost cast iron heat sink 2. Threaded holes 31 are opened on the upper end faces of the four mounting bosses 3. A wire outlet boss 4 is provided on the arc-shaped surface on the upper side of the cast iron motor housing 1. A through hole 41 is provided on the upper end face of the wire outlet boss 4, and the through hole 41 extends vertically downward and penetrates the inner circular surface of the cast iron motor housing 1.

[0016] The thickness of the cast iron heat sink 2 located at the topmost point on one side of the outer circular surface of the cast iron motor housing 1 is 3mm, and the thickness of the cast iron heat sink 2 located at the topmost point on the other side of the outer circular surface of the cast iron motor housing 1 is 3mm. The wall thickness of the cast iron motor housing 1 is 5.5mm. The upper end face of the cable outlet boss 4 is provided with a first annular groove 42, and the symmetrical center line of the first annular groove 42 coincides with the symmetrical center line of the through hole 41. The upper end face of the mounting boss 3 is provided with a second annular groove 32, and the symmetrical center line of the second annular groove 32 coincides with the symmetrical center line of the threaded hole 31. A screw hole 11 for mounting a lifting ring is provided on each side of the outer circular surface of the cast iron motor housing 1. The two ends of the cast iron motor housing 1 are provided with a stop 12, and the inner wall surface of the cast iron motor housing 1 is provided with an iron core stop 13.

[0017] It should be understood that although the above embodiments provide a relatively detailed textual description of the design concept of this utility model, these textual descriptions are merely simple textual descriptions of the design concept of this utility model, and not limitations on the design concept of this utility model. Any combination, addition, or modification that does not exceed the design concept of this utility model shall fall within the protection scope of this utility model.

Claims

1. An integrated motor housing, comprising a cast-iron motor housing (1), a plurality of cast-iron cooling fins (2) are arranged on the lower side and both sides of the outer circumferential surface of the cast-iron motor housing (1) and the cast-iron cooling fins (2) are arranged along the axial direction of the cast-iron motor housing (1), the cast-iron cooling fins (2) arranged on both sides of the outer circumferential surface of the cast-iron motor housing (1) are arranged horizontally, characterized in that: The uppermost cast iron heat sink (2) on one side of the outer circular surface of the cast iron motor shell (1) is arranged at the same height with the uppermost cast iron heat sink (2) on the other side of the outer circular surface of the cast iron motor shell (1), the thickness of the two cast iron heat sinks (2) is the same and greater than that of other cast iron heat sinks (2), two mounting bosses (3) are arranged at the joint between the upper end surface of one of the uppermost cast iron heat sinks (2) and the arc surface on the upper side of the cast iron motor shell (1), two mounting bosses (3) are arranged at the joint between the upper end surface of the other of the uppermost cast iron heat sinks (2) and the arc surface on the upper side of the cast iron motor shell (1), the upper end surface of the four mounting bosses (3) is provided with a threaded hole (31), the arc surface on the upper side of the cast iron motor shell (1) is provided with a wire outlet boss (4), the upper end surface of the wire outlet boss (4) is provided with a through hole (41) extending vertically downward through the inner circular surface of the cast iron motor shell (1).

2. The one-piece motor housing of claim 1, wherein: The thickness of the uppermost cast iron heat sink (2) on one side of the outer circular surface of the cast iron motor shell (1) is 3mm, the thickness of the uppermost cast iron heat sink (2) on the other side of the outer circular surface of the cast iron motor shell (1) is 3mm, and the wall thickness of the cast iron motor shell (1) is 5.5mm.

3. The one-piece motor housing of claim 1 or 2, wherein: The upper end surface of the wire outlet boss (4) is provided with a first annular groove (42), and the symmetry center line of the first annular groove (42) coincides with the symmetry center line of the through hole (41).

4. The one-piece motor housing of claim 1 or 2, wherein: The upper end surface of the mounting boss (3) is provided with a second annular groove (32), and the symmetry center line of the second annular groove (32) coincides with the symmetry center line of the threaded hole (31).

5. The one-piece motor housing of claim 1 or 2, wherein: Two screw holes (11) for mounting lifting rings are arranged on the two sides of the outer circular surface of the cast iron motor shell (1).

6. The one-piece motor housing of claim 1 or 2, wherein: The cast iron motor shell (1) is provided with a stop (12) at both ends, and an iron core stop (13) is arranged on the inner wall surface of the cast iron motor shell (1).

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