CN204243982U - Motor casing heat dissipation and cooling structure with spaced open heat dissipation columns - Google Patents

Abstract

There is the motor case cooling structure of the open thermal column in interval, belong to field of electromechanical technology.The utility model in order to solve radiating fin on existing enclosed motor casing and extraneous air territory contact area limited, cooling effect is poor, the operation temperature rise of motor, the problem that motor runnability is low.On casing, circumference is evenly equipped with three connection strengthening ribs, the length direction of every bar connection strengthening rib is all consistent with the axis direction of casing, between the connection strengthening rib and the connection strengthening rib of its lower left on casing top, be defined as the first heat dissipation region, between the connection strengthening rib on casing top and its bottom-right connection strengthening rib, be defined as the second heat dissipation region; All equidistantly be provided with multiple thermal column group in first heat dissipation region and the second heat dissipation region, each thermal column group includes multiple thermal column, and multiple thermal column is equidistantly arranged along the axis direction of casing.The utility model is used for motor radiating, and radiating efficiency is 3 times of existing motor case.

Description

Motor casing heat dissipation and cooling structure with spaced open heat dissipation columns

technical field

The utility model relates to a cooling system for a motor, in particular to a heat dissipation and cooling structure of a motor casing with spaced open cooling columns, which belongs to the technical field of motors.

Background technique

Small power motors usually adopt a closed cooling structure, and the loss generated by each component when the motor is working is mainly transferred to the external environment through the casing in the radial direction in the form of heat. With the development of the contemporary motor design industry towards small size and high power density, the heat generated per unit time of its operation also increases. The heat dissipation fins on the traditional casing have limited contact area with the external air domain, resulting in motor The heat generated inside cannot be transferred to the external environment in time during work, resulting in a high temperature rise of each component. This situation not only reduces the operating efficiency and output power of the motor, but also causes the rapid aging of the internal insulation material of the motor, which seriously threatens the normal operation of the motor.

Therefore, on the basis of ensuring the electrical and mechanical properties of the motor, the heat dissipation capacity of the sealed motor is improved by changing the external heat dissipation structure, so that the heat generated inside the motor can be transferred to the external environment in time, and the maximum temperature of each component during operation can be reduced. Temperature rise, ensuring that the insulating material is within its working temperature rise limit is an important measure to improve the motor's operating life and stability.

Contents of the invention

The purpose of this utility model is to provide a motor case heat dissipation and cooling structure with spaced open heat dissipation columns to solve the problem that the contact area between the heat dissipation fins on the existing closed motor case and the external air domain is limited, the cooling effect is poor, and the motor The operating temperature rises and the motor operating performance is low.

The technical scheme that the utility model takes in order to solve the problems of the technologies described above is:

The heat dissipation and cooling structure of the motor casing with spaced open heat dissipation columns described in the utility model includes a machine base, a casing, and a plurality of heat dissipation column groups. The casing is evenly distributed with three connecting ribs in the circumferential direction, and the length of each connecting rib is The direction is consistent with the axis direction of the case. One of the three connecting ribs is located at the top of the case. The first heat dissipation area is defined between the connecting rib at the top of the case and the connecting rib at the bottom left. , the second heat dissipation area is defined between the connecting rib at the top of the case and the connecting rib at the bottom right, and the support area is defined between the connecting rib at the lower left and the connecting rib at the bottom right. Connected and located in the support area; the first heat dissipation area and the second heat dissipation area are provided with a plurality of heat dissipation column groups at equal intervals, each heat dissipation column group includes a plurality of heat dissipation columns, and the plurality of heat dissipation columns are arranged along the axis of the casing The directions are equally spaced.

Preferably: the axis of each cooling column perpendicularly intersects the axis of the casing. This setting greatly increases the heat dissipation area of the casing in contact with the peripheral air domain, which has a good improvement effect on reducing the maximum temperature rise of each component and optimizing the temperature rise distribution of the components when the motor is working, and in the actual production of the casing In the process, some raw materials can be saved and the production cost can be reduced.

Preferably: the distance between two adjacent heat dissipation pillars in each heat dissipation pillar group is equal to the diameter of the heat dissipation pillars. With such an arrangement, the cooling medium flows more smoothly between two adjacent heat dissipation columns, and the outer surface of each heat dissipation column is utilized to the maximum for cold and heat exchange.

Preferably: the distance between two adjacent groups of heat dissipation columns in the first heat dissipation area and the second heat dissipation area is equal to the radius of the heat dissipation columns. With such an arrangement, the cooling medium flows more smoothly between two adjacent heat dissipation column groups, and the outer surface of each heat dissipation column is utilized to the greatest extent for cold and heat exchange.

Preferably: the number of heat dissipation column groups in the first heat dissipation area and the second heat dissipation area are both seven.

Preferably: the height of each cooling column is twice its diameter. With such setting, while saving raw materials, heat dissipation requirements are met.

Compared with the prior art, the utility model has the following effects: the outer surface of the motor casing with spaced and open heat dissipation columns adopts axially uniform and spaced open heat dissipation columns, which is better than the traditional casing. Compared with the characteristics of the cooling fins on the outer surface, it greatly increases the heat dissipation area of the casing in contact with the peripheral air domain, and at the same time effectively reduces the flow loss of the cooling medium when it is transmitted in the axial direction. Optimizing the temperature rise distribution has a good improvement effect. Under the same air volume, the heat dissipation efficiency is three times that of the traditional casing. In the heat dissipation and cooling structure of the motor casing with spaced open cooling columns of the utility model, when the cooling medium flows to the cooling columns on the surface of the casing, a bypass flow will be generated, and the surface of the cooling columns will be wrapped, so that the energy transferred to the cooling columns can be effectively Heat away. Due to the discontinuous characteristics between the heat dissipation columns, the cooling medium forms an "8"-shaped transmission path between adjacent heat dissipation columns. It not only increases the contact area between the surface of the casing and the peripheral air domain, but also improves the flow of the traditional cooling medium along the axial direction into multi-path flow in the axial and circumferential directions, which greatly reduces the wind mill loss.

Description of drawings

Fig. 1 is a three-dimensional structure diagram of the heat dissipation and cooling structure of the motor casing with spaced open heat dissipation columns described in the present invention.

Detailed ways

The preferred embodiments of the present utility model will be described in detail below according to the accompanying drawings.

As shown in Figure 1, the heat dissipation and cooling structure of the motor casing with spaced open heat dissipation columns described in the present invention includes a base 1, a casing 2 and a plurality of heat dissipation column groups 4, and the casing 2 is evenly distributed with three Connect the reinforcing ribs 3, the length direction of each connecting reinforcing rib 3 is consistent with the axis direction of the casing 2, one of the three connecting reinforcing ribs 3 is located at the top of the casing 2, and the connection at the top of the casing 2 The first heat dissipation area is defined between the rib 3 and the connecting rib 3 on the lower left, and the second heat dissipation area is defined between the connecting rib 3 on the top of the casing 2 and the connecting rib 3 on the lower right. The support area is defined between the connecting rib 3 and the connecting rib 3 on the lower right, and the base 1 is connected to the casing 2 and is located in the supporting area; the first heat dissipation area and the second heat dissipation area are arranged at equal intervals. Each heat dissipation column group 4 includes a plurality of heat dissipation columns 5, and the plurality of heat dissipation columns 5 are arranged at equal intervals along the axial direction of the casing 2. The axis of each cooling column 5 is vertically intersected with the axis of the casing 2 . The distance between two adjacent heat dissipation pillars 5 in each heat dissipation pillar group 4 is equal to the diameter of the heat dissipation pillars. The distance between two adjacent heat dissipation column groups 4 in the first heat dissipation area and the second heat dissipation area is equal to the radius of the heat dissipation column 5 . The number of heat dissipation column groups 4 in the first heat dissipation area and the second heat dissipation area are both seven. The height of each cooling column 5 is twice its diameter. When the motor is working normally, the loss generated by the stator winding and the core is the most serious compared to other components. This part of the loss is transmitted to the casing through the stator core in the form of heat in the radial direction. The cooling structure of this embodiment involves an axially uniform , Interval heat dissipation columns can improve the ability of the cooling medium to transfer this part of the heat to the external air domain, thereby reducing the temperature rise of various components in the motor and improving the current situation of excessive temperature gradients of various heating components in the motor. The stator core is loaded into the casing of this embodiment through the lamination process. After the rotor is installed, the motor end cover and the casing are tightly connected by screws on both sides of the casing. The radial dimensions of the screw holes at the end cover and the casing end are equal Smaller than the outer diameter, there is a groove with a depth of 5mm at the connection between the end cover and the casing, and the inner diameter of the groove is the same as the outer diameter of the casing, so as to ensure the sealing state inside the motor. The windshield at the end part has the same outer diameter as the windshield, so that all the cooling air can be sent into the area between the cooling columns.

This embodiment is only an exemplary description of this patent, and does not limit its protection scope. Those skilled in the art can also make partial changes to it, as long as it does not exceed the spirit and essence of this patent, all within the protection scope of this patent.

Claims (6)

1. there is the motor case cooling structure of the open thermal column in interval, comprise support (1), casing (2) and multiple thermal column group (4), it is characterized in that: the upper circumference of described casing (2) is evenly equipped with three connection strengthening ribs (3), the length direction of every bar connection strengthening rib (3) is all consistent with the axis direction of casing (2), article three, wherein connection strengthening rib of connection strengthening rib (3) is positioned at the top of casing (2), be positioned between the connection strengthening rib (3) on casing (2) top and the connection strengthening rib (3) of its lower left and be defined as the first heat dissipation region, be positioned between the connection strengthening rib (3) on casing (2) top and its bottom-right connection strengthening rib (3) and be defined as the second heat dissipation region, supporting zone is defined as between the connection strengthening rib (3) of lower left and bottom-right connection strengthening rib (3), support (1) is connected with casing (2) and is positioned at supporting zone, all equidistantly be provided with multiple thermal column group (4) in described first heat dissipation region and the second heat dissipation region, each thermal column group (4) includes multiple thermal column (5), and multiple thermal column (5) is equidistantly arranged along the axis direction of casing (2).

2. the motor case cooling structure with the open thermal column in interval according to claim 1, is characterized in that: the axis of each thermal column (5) all with the intersect vertical axis of casing (2).

3. the motor case cooling structure with the open thermal column in interval according to claim 2, is characterized in that: the spacing distance of two thermal columns (5) adjacent in each thermal column group (4) equals the diameter of thermal column.

4. the motor case cooling structure with the open thermal column in interval according to claim 3, is characterized in that: the spacing in described first heat dissipation region and the second heat dissipation region between adjacent two thermal column groups (4) equals the radius of thermal column (5).

5. the motor case cooling structure with the open thermal column in interval according to claim 4, is characterized in that: in described first heat dissipation region and the second heat dissipation region, the number of thermal column group (4) is seven.

6. the motor case cooling structure with the open thermal column in interval according to claim 5, is characterized in that: the height of each thermal column (5) is 2 times of its diameter.