CN216530873U - High-speed motor front shaft cooling device - Google Patents

Abstract

The utility model discloses a cooling device for a front shaft of a high-speed motor, which relates to the technical field of motors, and the main purpose is to further improve the efficiency of cooling the front-end bearing of the motor by using a rear-end fan. The main technical scheme of the utility model is: a cooling device for the front axle of a high-speed motor, the device includes: a blower part and a guide part; the blower part includes a rear end fan and a rear air hood, and the rear end fan is installed on the side of the motor shaft. At the rear end, the rear air hood encloses the rear fan; the air guide portion includes an axial air duct and a radial air duct, one end of the axial air duct is connected to the axial side of the rear air hood, and the other One end is connected to one end of the radial air duct, and the other end of the radial air duct extends to the front end bearing of the motor along the radial direction of the front end face of the motor housing.

Description

High-speed motor front axle cooling device

technical field

The utility model relates to the technical field of motors, in particular to a cooling device for a front axle of a high-speed motor.

Background technique

Motors are used in many environments in the industry. When the motor is running, its front and rear bearings are prone to heat, which affects the life of the motor and is easily damaged by overheating.

At present, due to the structure of the motor, only a fan is installed at the rear bearing of the motor, and a fan cannot be installed at the front bearing. And the front bearing of the motor is generally opposite to the equipment driven by the motor. If the temperature of the equipment itself is high, the front bearing of the motor opposite to it is more likely to be damaged by overheating.

In the prior art, a fan is arranged at the rear end of the motor, and the fan blows the air flow from the rear end to the front end of the motor along the gap between the cooling fins on the motor housing. However, the airflow can only pass through the outer periphery of the motor housing and cannot reach the front end bearing of the motor, so the heat at the front end bearing of the motor is easy to accumulate, causing the front end bearing of the motor to be overheated and damaged.

In order to solve the above problems, in the patent application document of the prior art with the application number of 201921542139.3, the front end of the motor is provided with an air guide cover that guides the direction of the airflow so that it blows toward the bearing at the front end of the motor. However, the cooling efficiency of the front end bearing of the motor needs to be further improved.

Utility model content

In view of this, the present invention provides a cooling device for the front axle of a high-speed motor, the main purpose of which is to further improve the efficiency of cooling the front end bearing of the motor by using the rear fan.

To achieve the above object, the utility model mainly provides the following technical solutions:

The utility model provides a cooling device for a front axle of a high-speed motor, which comprises: a blowing part and a flow guiding part;

The blowing part includes a rear fan and a rear fan, the rear fan is mounted on the rear end of the motor shaft, and the rear fan surrounds the rear fan;

The air guide part includes an axial air duct and a radial air duct. One end of the axial air duct is connected to the axial side surface of the rear air cover, and the other end is connected to one end of the radial air duct. The other end of the air duct extends along the radial direction of the front end face of the motor housing to the front end bearing of the motor.

The purpose of the present utility model and the solution to its technical problems can be further achieved by adopting the following technical measures.

Optionally, an air outlet is provided on the axial side of the rear air cover, and one end of the axial air duct is detachably connected to the air outlet.

Optionally, the edge of a port of the axial air duct is fixedly connected to the connecting plate, and the four corners of the connecting plate are respectively provided with first through holes for passing through the first screw, so that the first screw is threaded. It is connected to the edge of the air outlet, and a sealing gasket is embedded between the connecting plate and the edge of the air outlet.

Optionally, it also includes a plurality of mounting plates, the plurality of the mounting plates are respectively fixedly connected to the axial side of the axial air duct and the axial side of the radial air duct, and the mounting plate is provided with a second passage. The hole is used to pass through the second screw rod, so that the second screw rod is screwed to the motor housing.

Optionally, the other end face of the radial air duct is inclined with respect to the radial section of the radial air duct.

Optionally, the air guide portion includes a first air guide portion and a second air guide portion, and the first air guide portion and the second air guide portion have the same structure, and both include an axial air duct and a radial air duct, The first air guide portion and the second air guide portion are mirror-symmetrically arranged on the left and right sides of the motor housing.

By the above-mentioned technical scheme, the utility model at least has the following advantages:

When the motor is running, the motor shaft drives the rear fan to rotate, guiding the outside air to enter the rear air hood from the mesh on the rear side of the rear air hood, and then enter the axial air duct and the radial air duct in turn through the shaft side of the rear air hood , and finally blow to the position where the front end bearing of the motor is located.

In the prior art, an air guide hood is installed at the front end of the motor, and the airflow first flows through the spaced flow channels between the adjacent heat sinks on the shaft side of the motor housing, and then reaches the air guide hood, so the temperature of the airflow reaching the air guide hood has risen. If it is much higher, the difference between the temperature of the airflow and the temperature of the front end bearing of the motor will inevitably decrease, and the cooling efficiency of the front end bearing of the motor will inevitably decrease.

The axial air duct in this device has the effect of draining part of the airflow in the rear hood, preventing the part of the airflow from flowing through the spaced runners between the adjacent fins and rapidly heating up. When the part of the airflow flows to the front end bearing of the motor, There is still a relatively large temperature difference between the airflow and the bearing at the front end of the motor, thereby indirectly improving the cooling efficiency of the bearing at the front end of the motor.

Description of drawings

1 is a schematic diagram of the installation structure of a cooling device for a front axle of a high-speed motor provided by an embodiment of the present invention;

FIG. 2 is a perspective view of a first perspective view of a flow guide provided by an embodiment of the present invention;

3 is a perspective view of a second viewing angle of a flow guide provided by an embodiment of the present invention;

FIG. 4 is an enlarged view of part A in FIG. 3 .

Reference numerals in the accompanying drawings include: rear air cover 1 , motor shaft 2 , axial air duct 3 , radial air duct 4 , motor housing 5 , heat sink 6 , connecting plate 7 , first through hole 8 , a mounting plate 9 , and a second through hole 10 .

Detailed ways

In order to further illustrate the technical means and effects adopted by the present utility model to achieve the intended purpose of the utility model, the following in conjunction with the accompanying drawings and preferred embodiments, the specific embodiments, structures, features and effects of the application according to the present utility model are described in detail. The description is as follows. In the following description, different "an embodiment" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

The present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in FIG. 1 , an embodiment of the present invention provides a cooling device for a front axle of a high-speed motor, which includes: a blower part and a guide part;

The blowing part includes a rear fan and a rear fan 1, the rear fan is mounted on the rear end of the motor shaft 2, and the rear fan 1 surrounds the rear fan;

The air guide portion includes an axial air duct 3 and a radial air duct 4. One end of the axial air duct 3 is connected to the axial side surface of the rear air cover 1, and the other end is connected to one end of the radial air duct 4. , the other end of the radial air duct 4 extends along the radial direction of the front end face of the motor housing 5 to the front end bearing of the motor.

The working process of the high-speed motor front axle cooling device is as follows:

When the motor is running, the motor shaft 2 drives the rear fan to rotate, and guides the outside air to enter the rear air hood 1 from the mesh on the rear side of the rear air hood 1, and then enter the axial air duct 3 through the shaft side of the rear air hood 1 in turn. and radial air duct 4, and finally blow to the position where the front end bearing of the motor is located.

In the prior art, an air guide hood is installed at the front end of the motor, and the airflow first flows through the spaced flow channels between the adjacent heat sinks 6 on the axial side of the motor housing 5, and then reaches the air guide hood, so the temperature of the airflow reaching the air guide hood It has risen a lot, the temperature difference between the air flow and the temperature of the front end bearing of the motor will inevitably decrease, and the cooling efficiency of the front end bearing of the motor will inevitably decrease. Because the cooling efficiency of the front bearing of the motor is low, when the temperature of the motor bearing is high, it is necessary to connect a compressed air cooling hose or configure a cooling and purging hard pipe in advance. Connecting the cooling hose increases the workload and the cost of using the hose and cooling compressed air; Pre-configuring cooling and purging hard pipes increases the cost of pipelines and the use of cooling compressed air; erecting axial fans for cooling increases the cost and power consumption of axial fan equipment, and temporary wiring and electricity consumption increase safety hazards.

The axial air duct 3 in the device has a drainage effect on part of the airflow in the rear hood 1 to prevent the part of the airflow from flowing through the spaced flow channels between the adjacent heat sinks 6 to rapidly heat up. When the part of the airflow flows to the front end of the motor There is still a relatively large temperature difference between the airflow and the bearing at the front end of the motor, thereby indirectly improving the cooling efficiency of the bearing at the front end of the motor, saving the cost and work of configuring a cooling pipeline or connecting a temporary hose cooling pipeline and compressed air. It reduces the use of axial flow fans, saves electric energy and eliminates potential safety hazards when using axial flow fans, which not only solves the problem of the high temperature of the front shaft of the motor, but also achieves the purpose of energy saving and consumption reduction, improving work efficiency and reducing workload.

In the technical solution of the present invention, the device further improves the cooling efficiency of the front end bearing of the motor compared with the prior art without changing the structure of the motor itself.

Specifically, the axial air duct 3 is located on the periphery of the heat sink 6 on the shaft side of the motor housing 5, the extension direction of the axial air duct 3 is parallel to the axial direction of the motor housing 5, and the radial air duct 4 Extends horizontally to the front bearing of the motor.

As shown in FIG. 1 , in a specific implementation manner, an air outlet is provided on the axial side of the rear air cover 1 , and one end of the axial air duct 3 is detachably connected to the air outlet.

In this embodiment, specifically, one end of the axial air duct 3 is detachably connected to the air outlet, which facilitates disassembly and maintenance of the axial air duct 3 and the radial air duct 4 .

As shown in FIG. 1 , in a specific embodiment, an edge of a port of the axial air duct 3 is fixedly connected to a connecting plate 7 , and the four corners of the connecting plate 7 are respectively provided with first through holes 8 for passing through The first screw is screwed to the edge of the air outlet, and a sealing gasket is embedded between the connecting plate 7 and the edge of the air outlet.

In this embodiment, specifically, the curvature of the connecting plate 7 is consistent with the curvature of the shaft side surface of the rear air cover 1, and the first screw is tightened so that the gasket is squeezed between the connecting plate 7 and the edge of the air outlet, Avoid air leakage.

As shown in FIG. 1 , FIG. 2 , FIG. 3 , and FIG. 4 , in the specific embodiment, a plurality of mounting plates 9 are further included, and the plurality of mounting plates 9 are respectively fixedly connected to the axial side of the axial air duct 3 . On the axial side of the radial air duct 4 , the mounting plate 9 is provided with a second through hole 10 for passing through a second screw so that the second screw is screwed to the motor housing 5 .

In this embodiment, specifically, each mounting plate 9 is fixedly welded to the axial side of the axial air duct 3 or the axial side of the radial air duct 4 , and is connected through the second screw thread of the second through hole 10 . The threaded blind holes on the surface of the motor housing 5 are used to strengthen the firmness of the axial air duct 3 and the radial air duct 4 relative to the motor housing 5 .

As shown in FIG. 1 , FIG. 2 , and FIG. 3 , in a specific implementation manner, the other end face of the radial air duct 4 is inclined with respect to the radial section of the radial air duct 4 .

In this embodiment, specifically, the other end face of the relatively inclined radial air duct 4 (the area of the other end face of the radial air duct 4 is larger than the area of the radial section of the radial air duct 4 ) faces the motor front end bearing , Under the condition that the airflow velocity in the radial air duct 4 is constant, the area of the front end bearing of the motor that the unit volume of airflow contacts in a unit time can be increased, and the air flow on the surface of the front end bearing of the motor can be enhanced, thereby improving the front end bearing of the motor. cooling rate.

As shown in FIG. 1 , in a specific embodiment, the air guide portion includes a first air guide portion and a second air guide portion, and the first air guide portion and the second air guide portion have the same structure, and both include an axial direction. The air duct 3 and the radial air duct 4 , the first air guide part and the second air guide part are mirror-symmetrically arranged on the left and right sides of the motor housing 5 .

In this embodiment, specifically, one end of the two axial air ducts 3 is respectively connected to the opposite axial side of the rear air cover 1, and the other ends of the two radial air ducts 4 respectively extend to the opposite axial side of the motor front end bearing. , so that the two oppositely blown cooling airflows surround the front end bearing of the motor, and the front end bearing of the motor is cooled 360° without dead angle.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (6)

1. A high-speed motor front axle cooling device is characterized by comprising:

the fan comprises a blowing part and a control part, wherein the blowing part comprises a rear end fan and a rear fan cover, the rear end fan is arranged at the rear end of the motor shaft, and the rear fan cover encloses the rear end fan;

the flow guide part comprises an axial air pipe and a radial air pipe, one end of the axial air pipe is connected to the shaft side face of the rear fan cover, the other end of the axial air pipe is connected to one end of the radial air pipe, and the other end of the radial air pipe radially extends to a front end bearing of the motor along the front end face of the motor shell.

2. The front axle cooling device of high-speed motor according to claim 1,

an air outlet is formed in the shaft side face of the rear fan cover, and one end of the axial air pipe is detachably connected to the air outlet.

3. The front axle cooling device of high-speed motor according to claim 2,

the utility model discloses an air outlet structure, including axial tuber pipe, connecting plate, first screw rod, connecting plate, air outlet, the marginal fixed connection of a port edge of axial tuber pipe in the connecting plate, the four corners of connecting plate is equipped with first through-hole respectively for pass first screw rod, so that first screw rod threaded connection in the edge of air outlet, the connecting plate with inlay between the edge of air outlet and be equipped with sealed the pad.

4. The front axle cooling device of a high-speed motor according to any one of claims 1 to 3,

still include a plurality of mounting panels, it is a plurality of the mounting panel respectively fixed connection in the axial side of axial tuber pipe with the axial side of radial tuber pipe, the mounting panel is equipped with the second through-hole for pass the second screw rod, so that second screw rod threaded connection is in motor casing.

5. The front axle cooling device of a high-speed motor according to any one of claims 1 to 3,

and the other end surface of the radial air pipe is inclined relative to the radial section of the radial air pipe.

6. The front axle cooling device of a high-speed motor according to any one of claims 1 to 3,

the water conservancy diversion portion includes first water conservancy diversion portion and second water conservancy diversion portion, first water conservancy diversion portion and second water conservancy diversion portion structure are the same, all include axial tuber pipe and radial tuber pipe, first water conservancy diversion portion with second water conservancy diversion portion mirror symmetry sets up in the left and right sides of motor casing.

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