CN220754565U - Motor cooling structure and motor - Google Patents

Abstract

The utility model provides a motor cooling structure and a motor, and relates to the technical field of motors. According to the utility model, the fan is arranged in the cooler, the fan cannot be influenced by the rotating shaft, the fan is not easy to damage, the potential safety hazard is reduced, and the cooling efficiency of the motor is improved.

Description

Motor cooling structure and motor

Technical Field

The utility model relates to the technical field of motors, in particular to a motor cooling structure and a motor.

Background

The motor generally comprises a rotor, a stator, windings and a casing, the rotor generates a large amount of heat in the rotating process, the motor needs to be cooled, a common cooling method is IC611, namely a cooler communicated with the motor base is arranged above the motor base, a plurality of air pipes with two ends communicated with the outside are arranged in the cooler along the axial direction of the motor, and the air pipes are used as external air passages of the motor. An inner fan is sleeved on one side of the rotating stator and on the inner rotating shaft of the motor, the inner fan rotates along with the rotating shaft, and blown wind circulates between the inside of the motor shell and the cooler to serve as an inner wind path. The internal air path and the external air path exchange heat in the cooler to cool and dissipate heat of the motor. The inner fan is the weakest part in the whole rotor parts, when the high-rotation-speed motor drives the load of the reciprocating compressor, the motor rotating shaft is always under the action of alternating torque in the operation process of the motor due to the periodical change of the load of the reciprocating compressor, all parts on the shaft are in a fatigue vibration state for a long time, the influence of the inner fan is the largest, the inner fan is easy to break, the cooling efficiency of the motor is influenced, and hidden danger exists in the use process of the motor.

Disclosure of Invention

The utility model aims to solve the problem of improving the cooling efficiency of a motor.

The utility model provides a motor cooling structure, which comprises a cooler, a fan and a motor, wherein the cooler is arranged above a motor base in a covering manner, a first air opening, a second air opening and a third air opening are sequentially formed above the motor base along the axial direction of the motor base, the second air opening is used for being aligned with a rotating stator in the radial direction of the motor, the first air opening and the third air opening are used for being aligned with two ends of a rotating shaft exceeding the rotating stator in the radial direction of the motor, a partition plate is arranged between the first air opening and the second air opening and between the second air opening and the third air opening, a ventilation path is reserved between the partition plate and the upper surface inside the cooler, a through hole is formed in the part, opposite to the second air opening, of the upper surface of the cooler, the motor is connected with the cooler, a driving shaft of the motor is inserted into the through hole, the fan is arranged in the cooler, and the driving shaft is connected with the fan in a driving manner.

Optionally, the fan is a centrifugal fan.

Optionally, the motor cooling structure further includes a guide plate, one end of the guide plate is connected with one end of the partition plate away from the motor, and the other end of the guide plate is inclined toward the lower end of the peripheral outer surface of the fan.

Optionally, the fan is keyed to the drive shaft.

Optionally, the motor cooling structure further comprises a key, a connecting hole is formed in the center of the fan along the axial direction of the fan, corresponding key grooves are formed in the connecting hole and the driving shaft, and the key is embedded in the two key grooves.

Optionally, the motor is bolted to the cooler.

Optionally, the motor cooling structure further comprises bolts, a plurality of connecting plates are uniformly distributed on the peripheral side surface of the motor, threaded holes are formed in positions, corresponding to the upper surface of the cooler, of the connecting plates, and the bolts penetrate through the threaded holes in the connecting plates and the cooler.

Optionally, the motor cooling structure further comprises a gasket, wherein the gasket is connected between the bolt and the connecting plate and is matched with the bolt for use.

Optionally, the motor cooling structure further comprises a sealing ring, and the sealing ring is connected between the motor and the through hole.

Compared with the prior art, the motor cooling structure has the beneficial effects that:

the utility model sets up the cooler above the motor seat, the first wind gap, the second wind gap and the third wind gap are set up on one side of the motor seat along the axial direction of the motor, the motor and the fan are set up on the upper side of the cooler, the motor and the fan are set up and connected with the cooler through the through hole, the driving shaft of the motor stretches into the cooler, the fan is set up in the cooler and is connected with the driving shaft driving the fan to rotate, the wind blown by the fan can form an internal wind path between the motor seat and the cooler, the internal wind path carries the heat in the motor, the temperature is higher, the heat exchange is carried out with the external wind path formed by the wind pipe in the cooler for the circulation of the air with lower external temperature, the cooling and the heat dissipation of the motor are carried out, the first wind gap and the third wind gap are aligned with the two ends of the rotating shaft beyond the rotating stator in the radial direction of the motor, the second wind gap is aligned with the rotating stator in the radial direction of the motor, the motor and the fan are arranged in the middle of the upper surface of the cooler, namely aligned with the second air port in the radial direction of the motor, the separation plates with the upper ends not connected with the upper surface of the interior of the cooler are arranged between the first air port and the second air port and between the second air port and the third air port in the cooler, namely ventilation paths exist between the upper ends of the separation plates and the upper surface of the interior of the cooler, the interior air path is conveniently divided into two air paths, one part between the first air port and the part of the second air port, which is close to the first air port, circulates around the separation plates between the first air port and the second air port, the other part between the third air port and the part of the second air port, which is close to the third air port, circulates around the separation plates between the third air port and the second air port, the path length of the interior air path is prolonged, the interior air path is divided into two parts, and the interior air path and the exterior air path are fully contacted and heat exchanged, the cooling heat dissipation effect of the motor is improved, the cooling efficiency of the motor is improved, and compared with the existing IC611 method for arranging the inner fan on the rotating shaft, the fan is arranged in the cooler, the fan cannot be affected by the rotating shaft, the fan is not easy to damage, potential safety hazards are reduced, and the cooling efficiency of the motor is improved.

In addition, in order to solve the problems, the utility model also provides a motor, which comprises the motor cooling structure.

Compared with the prior art, the motor has the advantages that the motor has the same advantages as the motor cooling structure, and the motor cooling structure is not repeated.

Drawings

Fig. 1 is a schematic structural diagram of a motor cooling structure according to an embodiment of the present utility model.

Reference numerals illustrate:

1-a cooler; 2-dividing plates; 3-guide plates; 4-a fan; 5-an electric motor; 61-rotating the stator; 62-rotating shaft; 7-a stand; 81-a first tuyere; 82-a third tuyere; 83-a second tuyere; 9-wind pipe.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

It should be noted that, in the description of the present utility model, the directions or positional relationships indicated by "upper", "lower", "left", "right", "top", "bottom", "front", "rear", "inner" and "outer", etc. are used for convenience of describing the present utility model only based on the directions or positional relationships shown in the drawings, and are not meant to indicate or imply that the apparatus must have a specific orientation, be configured and manipulated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present utility model.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

Moreover, while the utility model has been described with reference to specific embodiments, it should be understood that these embodiments are merely illustrative of the principles and applications of the present utility model. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present utility model as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways not otherwise described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.

In order to solve the above problems, as shown in fig. 1, the present utility model provides a motor cooling structure, which comprises a cooler 1, a fan 4 and a motor 5, wherein the cooler 1 is arranged above a motor base 7 in a covering manner, a first air opening 81, a second air opening 83 and a third air opening 82 are sequentially arranged above the motor base 7 along the axial direction of the motor base, the second air opening 83 is used for being aligned with a rotor 61 in the radial direction of the motor, the first air opening 81 and the third air opening 82 are used for being aligned with two ends of a rotating shaft 62 exceeding the rotor 61 in the radial direction of the motor, a partition plate 2 is arranged between the first air opening 81 and the second air opening 83 and between the second air opening 83 and the third air opening 82, a ventilation path is reserved between the partition plate 2 and the upper surface inside the cooler 1, a through hole is arranged at a part of the upper surface of the cooler 1 opposite to the second air opening 83, the motor 5 is connected with the cooler 1, the motor 5 is inserted into the rotating shaft 62 and is connected with the fan 4.

Specifically, the "rotor/stator 61" refers to a combination of a rotor and a stator.

In the embodiment, a cooler 1 is arranged above a machine seat 7 of a motor, a first air opening 81, a second air opening 83 and a third air opening 82 are formed on one side of the upper surface of the machine seat 7 along the axial direction of the motor, the machine seat 7 is communicated with the cooler 1, a through hole is formed above the cooler 1, a motor 5 and a fan 4 are arranged and connected with the cooler 1 through the through hole, a driving shaft of the motor 5 extends into the cooler 1, the fan 4 is arranged in the cooler 1 and is in driving connection with the driving shaft, the motor 5 drives the fan 4 to rotate, air blown by the fan 4 can form an internal air path between the machine seat 7 and the cooler 1, the internal air path has heat in the motor, heat exchange is carried out on the internal air path, the internal air path has higher temperature and forms external air path with an air pipe 9 for circulating air with lower external temperature in the cooler 1, the temperature is lowered for the motor, and the first air port 81 and the third air port 82 are aligned with both ends of the rotating shaft 62 beyond the rotating stator 61 in the radial direction of the motor, the second air port 83 is aligned with the rotating stator 61 in the radial direction of the motor, the motor 5 and the fan 4 are arranged in the middle of the upper surface of the cooler 1, that is, aligned with the second air port 83 in the radial direction of the motor, the partition plates 2, the upper ends of which are not connected with the upper surface inside the cooler 1, are arranged between the first air port 81 and the second air port 83 and between the second air port 83 and the third air port 82, that is, ventilation paths exist between the upper ends of the partition plates 2 and the upper surface inside the cooler 1, so that the internal air path is divided into two air paths, one circulates between the first air port 81 and the second air port 83 around the partition plate 2 between the first air port 81 and the second air port 83, the other circulates between the third air port 82 and the second air port 83 around the partition plate 2 between the third air port 82 and the second air port 83, the separation plate 2 is arranged to prolong the path length of the internal air path, divide the internal air path into two parts, enable the internal air path to fully contact with the external air path for heat exchange, improve the cooling and heat dissipation effects of the motor, and improve the cooling efficiency of the motor.

Specifically, the areas of the first air port 81 and the third air port 82 are equal, the area of the second air port 83 is larger than the area of the first air port 81, two internal air passages pass through the second air port 83, and only one internal air passage passes through the first air port 81 and the third air port 82, so that the arrangement is convenient for improving the fluidity of the internal air passages.

Alternatively, as shown in fig. 1, the fan 4 is a centrifugal fan.

In the present embodiment, by providing the fan 4 as a centrifugal fan that sucks air from the middle and blows air toward the radial edge, it is convenient to make the internal air passage run in two in the direction of the arrow in the drawing, one circulating around the partition plate 2 between the first air port 81 and the second air port 83 between the first air port 81 and the portion of the second air port 83 near the first air port 81, and the other circulating around the partition plate 2 between the third air port 82 and the second air port 83 between the third air port 82 and the portion of the second air port 83 near the third air port 82.

Optionally, as shown in fig. 1, the motor cooling structure further includes a guide plate 3, one end of the guide plate 3 is connected to one end of the partition plate 2 away from the motor, and the other end of the guide plate 3 is inclined toward the lower end of the peripheral outer surface of the fan 4.

In this embodiment, through setting up deflector 3 between fan 4 and division board 2, the one end and the division board 2 of deflector 3 are connected, and the other end inclines towards the circumference side surface lower extreme of fan 4, and two deflector 3 of second wind gap 83 both sides are convenient for make centrifugal fan follow the whole entering fan 4 of fan 83 suction to blow out to fan 4 along motor axial both ends, and deflector 3 plays the guide effect to the wind, prevents that the wind from directly flowing from division board 2 upward to first wind gap 81 or second wind gap 83, has improved the heat exchange efficiency of inside and outside wind path.

Optionally, the fan 4 is keyed to the drive shaft.

In this embodiment, the fan 4 is connected to the driving shaft by a key, so that the key connection structure is simple, stable, and not easy to loosen, and the fan 4 is prevented from falling off the driving shaft.

Optionally, the motor cooling structure further comprises a key, a connecting hole is arranged in the center of the fan 4 along the axial direction of the fan, corresponding key grooves are formed in the connecting hole and the driving shaft, and the key is embedded in the two key grooves.

In this embodiment, by providing a key groove on the driving shaft of the motor 5, a key groove is also provided in the connecting hole in the center of the fan 4 along the axial direction of the fan 4, the driving shaft is inserted into the connecting hole, the two key grooves have a size corresponding to the position, the key is embedded in the two key grooves, and the key has a size corresponding to the size of the key groove, so as to connect the driving shaft of the motor 5 with the fan 4.

Alternatively, the motor 5 is bolted to the cooler 1.

In the present embodiment, by bolting the motor 5 to the upper surface of the cooler 1, the bolting structure is simple, easy to operate and disassemble, and convenient to repair and replace the motor 5 and the fan 4.

Optionally, the motor cooling structure further comprises bolts, a plurality of connecting plates are uniformly distributed on the peripheral side surface of the motor 5, threaded holes are formed in positions, corresponding to the upper surface of the cooler 1, of the connecting plates, and the bolts penetrate through the threaded holes in the connecting plates and the cooler 1.

In this embodiment, a plurality of connection plates are uniformly distributed on the peripheral side surface of the motor 5, the plurality of connection plates are located on the same plane, threaded holes are formed in the plurality of connection plates, threaded holes with the same size are also formed in positions corresponding to the upper surface of the cooler 1, and bolts wind into the threaded holes in the upper surfaces of the connection plates and the cooler 1 so as to connect the motor 5 and the cooler 1.

Optionally, the motor cooling structure further comprises a gasket, wherein the gasket is connected between the bolt and the connecting plate and is matched with the bolt for use.

In the present embodiment, by providing a spacer between the bolt and the connection plate, the connection strength between the bolt, the motor 5, and the cooler 1 can be enhanced, loosening of the bolt due to vibration can be prevented, and the connection between the bolt, the motor 5, and the cooler 1 can be made more stable.

Optionally, the motor cooling structure further comprises a sealing ring, which is connected between the motor 5 and the through hole.

In this embodiment, through set up the sealing washer between the through-hole of motor 5 and cooler 1, the sealing washer snare is established in the week side of motor 5, seals the through-hole, prevents that wind from circulating outside cooler 1 from the through-hole, prevents cooler 1 from leaking out, promotes motor cooling radiating efficiency.

A motor according to another embodiment of the present utility model includes the motor cooling structure described above.

Compared with the prior art, the beneficial effects of the motor in this embodiment are substantially the same as those of the motor cooling structure described above, and will not be described here again.

Although the utility model is disclosed above, the scope of the utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the scope of the utility model.

Claims (10)

1. The utility model provides a motor cooling structure, characterized by includes cooler (1), fan (4) and motor (5), cooler (1) are used for the lid to establish in motor frame (7) top, frame (7) top is seted up first wind gap (81), second wind gap (83) and third wind gap (82) along its axial direction in proper order, second wind gap (83) are used for in the radial direction of motor with change stator (61) alignment, first wind gap (81) with third wind gap (82) are used for in the radial direction of motor with pivot (62) surpass the both ends alignment of change stator (61), in cooler (1), first wind gap (81) with between second wind gap (83), and all be equipped with division board (2) between second wind gap (83) and third wind gap (82), division board (2) with the inside upper surface in cooler (1) aligns with the both ends that pivot (62) surpassed change stator (61), cooler (1) is gone up surface and second wind gap (83) and motor (5) are connected in cooler (1) are equipped with fan (5) are held in the through-hole, the drive shaft is in driving connection with the fan (4).

2. Motor cooling structure according to claim 1, characterized in that the fan (4) is a centrifugal fan.

3. The motor cooling structure according to claim 2, further comprising a guide plate (3), one end of the guide plate (3) being connected to an end of the partition plate (2) remote from the motor, the other end of the guide plate (3) being inclined toward a lower end of a peripheral side outer surface of the fan (4).

4. Motor cooling structure according to claim 1, characterized in that the fan (4) is keyed to the drive shaft.

5. The motor cooling structure according to claim 4, further comprising a key, wherein a connecting hole is provided in the center of the fan (4) along the axial direction thereof, corresponding key grooves are provided in the connecting hole and the driving shaft, and the key is embedded in both of the key grooves.

6. The electric machine cooling structure according to claim 1, characterized in that the electric motor (5) is bolted to the cooler (1).

7. The motor cooling structure according to claim 6, further comprising bolts, wherein a plurality of connecting plates are uniformly distributed on the peripheral side surface of the motor (5), threaded holes are formed in positions of the connecting plates corresponding to the upper surface of the cooler (1), and the bolts penetrate through the threaded holes in the connecting plates and the cooler (1).

8. The motor cooling structure of claim 7, further comprising a spacer coupled between the bolt and the connection plate for use with the bolt.

9. The motor cooling structure according to claim 1, characterized by further comprising a sealing ring connected between the motor (5) and the through hole.

10. An electric machine comprising an electric machine cooling structure as claimed in any one of claims 1 to 9.