CN215186107U - Motor and air conditioner - Google Patents

Abstract

The utility model provides a motor, air conditioner, wherein the motor, including shell body, stator module, be constructed first screw thread on the inner wall of shell body, stator module has the second screw thread, stator module passes through first screw thread reaches second screw thread detachably connect in the shell body. According to the utility model discloses, stator module with the mode that adopts threaded connection between the shell body is realized dismantling the connection, can take out stator module from the shell body with both light dismantlements when stator module takes place unusually, and the shell body or stator module of being convenient for problem investigation or renewal has effectively overcome among the prior art both and has adopted interference fit's mode to connect and lead to stator module to be difficult to dismantle out or even lead to both scrapped not enough simultaneously from the shell body, avoid the waste of abnormal component, reduced motor maintenance cost.

Description

Motor and air conditioner

Technical Field

The utility model belongs to the technical field of the motor is made, concretely relates to motor, air conditioner.

Background

Generally, a motor mainly comprises a stator, a rotor, a casing, front and rear end covers and a bearing, wherein the end covers are mainly used for supporting the rotor of the motor, and the casing is used for installing the stator. Conventionally, be interference fit mode between casing and stator, during the installation, need heat the casing earlier, after the interior circle of standby shell fully expanded, then can pack into the stator. Although the method is convenient, the method has a disadvantage that if the stator is abnormal, the stator is difficult to take out of the casing, and finally the casing has to be scrapped. On the other hand, to cool the stator core of the motor, a cooling medium flow channel is usually formed inside the casing, and the flow channel is extremely difficult to obtain by machining and can only be realized by opening the casing, which inevitably increases the total cost of the motor.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a motor, air conditioner can overcome among the correlation technique stator module and shell body interference fit's mode and connect stator module be difficult to dismantle out or even lead to both condemned not enough in the shell body when stator module unusual needs to maintain.

In order to solve the above problem, the utility model provides a motor, including shell body, stator module, be constructed first screw thread on the inner wall of shell body, stator module has the second screw thread, stator module passes through first screw thread reach second screw thread detachably connect in the shell body.

In some embodiments, the stator assembly includes a stator core and a connection sleeve disposed on an outer circumference of the stator core, and the second thread is configured on an outer circumferential wall of the connection sleeve.

In some embodiments, the inner wall of the outer housing is configured with a plurality of first grooves extending axially along the inner wall, and the notches of the first grooves face one side of the stator assembly.

In some embodiments, a plurality of second grooves extending in the axial direction of the connecting sleeve are configured on the outer circumferential wall of the connecting sleeve, and when the first threads and the second threads are screwed to preset positions, the plurality of first grooves and the plurality of second grooves respectively penetrate through the outer shell in the axial direction in a one-to-one correspondence manner to form a plurality of cooling channels together.

In some embodiments, the first grooves are uniformly spaced along the circumference of the outer housing.

In some embodiments, in the thread extending direction of the first thread, the sum of the lengths of a plurality of the first grooves is La, the sum of the lengths of the threads of the first thread is Lb, and 0.2Lb is La < L > or less

0.25Lb。

In some embodiments, the first threads extend from a first end face to a second end face of the outer housing.

In some embodiments, the motor further includes a first end cover connected to the first end surface, the first end cover having a first rim, a side of the first rim facing the first end surface being in sealing connection with the first end of the connecting sleeve, and an outer circumferential wall of the first rim having a gap with an inner wall of the outer housing; and/or, the motor still includes the second end cover, connect in on the second terminal surface, the second end cover has the second ring edge, the second ring edge towards one side of second terminal surface with sealing connection between connecting sleeve's the second end, the outer periphery wall of second ring edge with have the clearance between the inner wall of shell body.

In some embodiments, the stator core is an interference fit with the connecting sleeve.

The utility model also provides an air conditioner, including foretell motor.

The utility model provides a pair of motor, air conditioner, stator module with the mode that adopts threaded connection between the shell body is realized dismantling the connection, can take out stator module from the shell body with both light dismantlements when stator module takes place unusually, and the problem of being convenient for is investigated and changed new shell body or stator module has effectively overcome among the prior art both and has adopted interference fit's mode to connect and lead to stator module to be difficult to dismantle out or even lead to both condemned not enough simultaneously from the shell body in, avoids the waste of abnormal component not, has reduced the motor maintenance cost.

Drawings

Fig. 1 is a schematic view of an internal structure of a motor according to an embodiment of the present invention;

fig. 2 is a cross section of a motor according to an embodiment of the present invention;

FIG. 3 is a perspective view of the outer housing of FIG. 1;

fig. 4 is a perspective view of the connecting sleeve of fig. 1.

The reference numerals are represented as:

1. an outer housing; 11. a first thread; 12. a first groove; 2. a stator assembly; 21. a stator core; 3. a connecting sleeve; 31. a second thread; 32. a second groove; 4. a cooling flow channel; 51. a first end cap; 511. a first rim; 52. a second end cap; 521. a second rim.

Detailed Description

Referring to fig. 1 to 4 in combination, according to an embodiment of the present invention, there is provided an electric machine, including an outer casing 1 and a stator assembly 2, wherein a first thread 11 is configured on an inner wall of the outer casing 1, the stator assembly 2 has a second thread 31, and the stator assembly 2 is detachably connected in the outer casing 1 through the first thread 11 and the second thread 31. In this technical scheme, stator module 2 with the mode that adopts threaded connection realizes dismantling the connection between the shell body 1, can take out stator module 2 from shell body 1 with both light dismantlements when stator module 2 takes place unusually, the problem of being convenient for is investigated and is changed new shell body 1 or stator module 2, has effectively overcome among the prior art both and has adopted interference fit's mode to connect and lead to stator module to be difficult to dismantle out or even lead to both scrapped simultaneously not enough from the shell body in, avoids the waste of abnormal component, has reduced the motor maintenance cost.

The stator assembly 2 includes a stator core 21, as a feasible implementation manner, the second thread 31 may be configured on the outer circumferential wall of the stator core 21 to be screwed with the first thread 11 to realize detachable connection between the stator core 21 and the outer shell 1, and since the existing stator core 21 is formed by stacking silicon steel sheets in specific manufacturing, the process difficulty of configuring the second thread 31 on the outer circumferential surface thereof is high, and meanwhile, the configuration of these thread grooves may adversely affect the magnetic field in the stator core 21, therefore, preferably, the stator assembly 2 further includes a connection sleeve 3 sleeved on the outer circumference of the stator core 21, at this time, the second thread 31 is configured on the outer circumferential wall of the connection sleeve 3, and the difficulty of processing the second thread 31 can be reduced by configuring the second thread 31 on the connection sleeve 3, meanwhile, the performance of the motor can be improved by manufacturing the connecting sleeve 3 by using a non-magnetic material.

In some embodiments, a plurality of first grooves 12 extending in the axial direction of the outer housing 1 are configured on the inner wall of the outer housing 1, the notches of the first grooves 12 face the stator assembly 2 side, and after the outer housing 1 is screwed with the connecting sleeve 3, the first grooves 12 extending in the axial direction of the outer housing 1 form a housing cooling channel of the motor, so that the stator core 21 can be cooled. It will be appreciated that the first recess 12 will divide the first thread 11 into a plurality of thread segments. Preferably, the depth of the first groove 12 is consistent with the thread height of the first thread 11, so that the thickness of the outer shell 1 can be reduced.

In some embodiments, a plurality of second grooves 32 extending along the axial direction of the connecting sleeve 3 are configured on the outer circumferential wall of the connecting sleeve, when the first threads 11 and the second threads 31 are screwed to a preset position, a plurality of first grooves 12 and a plurality of second grooves 32 respectively penetrate through the outer shell 1 in the axial direction in a one-to-one correspondence manner to form a plurality of cooling channels 4 together, and similar to the first grooves 12, the depth of the first grooves 12 is consistent with the thread height of the second threads 31. The cooling flow passage 4 formed by screwing the first screw thread 11 and the second screw thread 31 is respectively constructed on the open surfaces of the corresponding parts, so that an outer shell with the cooling flow passage does not need to be formed by an injection mold opening mode as in the prior art, and the manufacturing cost of the motor is saved. Preferably, a plurality of the first grooves 12 are uniformly spaced along the circumferential direction of the outer housing 1 to provide uniform circumferential cooling to the motor.

It can be understood that the groove bottoms of the first groove 12 and the second groove 32 are respectively a circular surface of the inner wall surface of the outer housing 1 and an outer circumferential surface of the connecting sleeve 3, in the thread extending direction of the first thread 11, the sum of the lengths of the plurality of first grooves 12 is La, the sum of the lengths of the threads of the first thread 11 is Lb, and La is greater than or equal to 0.2Lb and less than or equal to 0.25Lb, so as to ensure the smoothness of the screwing process and the position reliability after screwing of the first thread 11 and the second thread 31, and it can be understood that the length limitation of the second groove 32 is consistent with the length limitation of the first groove 12, which is not described herein again.

In some embodiments, the axial length of the connecting sleeve 3 may be smaller than the axial length of the outer housing 1, so that a communicating space is formed between the first end face and the second end face of the outer housing 1, and at this time, a cooling medium such as a refrigerant and the like may enter the interior of the motor through the cooling flow channel 4 to contact with the stator core 21, the windings thereon, the rotor and the like for cooling, and this way is only suitable for the cooling medium which does not cause a disadvantage to the internal components, and when the cooling medium is water, it is not suitable for the cooling flow channel 4 to contact with the internal components, and at this time, it is preferable that the first thread 11 extends from the first end face to the second end face of the outer housing 1, correspondingly, the motor further includes a first end cover 51 connected to the first end face, and the motor further includes a second end cover 52, And is connected to the second end face and can be hermetically connected to the first end and the second end of the connecting sleeve 3, respectively, so that the cooling flow passage 4 is closed on the outer peripheral side of the connecting sleeve 3. Further, the first end cap 51 has a first annular edge 511, a side of the first annular edge 511 facing the first end face is in sealing connection with the first end of the connecting sleeve 3, and a gap is formed between an outer circumferential wall of the first annular edge 511 and an inner wall of the outer shell 1; and/or the second end cover 52 is provided with a second annular edge 521, the second annular edge 521 is connected with the second end of the connecting sleeve 3 in a sealing manner towards one side of the second end face, a gap is formed between the outer circumferential wall of the second annular edge 521 and the inner wall of the outer shell 1, so that the end cover can be cooled, and the gap can be best drained to the bearing holes respectively formed in the first end cover 51 and the second end cover 52 through the drainage channel, so that the bearings at the corresponding bearing holes can be effectively cooled.

In some embodiments, the stator core 21 is an interference fit with the connecting sleeve 3. During specific assembly, the stator core 21 and the connecting sleeve 3 are in interference fit connection, and then the stator core and the connecting sleeve are connected with the outer shell 1 in a screwing mode as a whole.

According to the utility model discloses an embodiment still provides an air conditioner, including foretell motor.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (10)

1. An electric machine, characterized by comprising an outer housing (1), a stator assembly (2), a first thread (11) configured on the inner wall of the outer housing (1), the stator assembly (2) having a second thread (31), the stator assembly (2) being detachably connected inside the outer housing (1) by the first thread (11) and the second thread (31).

2. The machine according to claim 1, characterized in that the stator assembly (2) comprises a stator core (21) and a connecting sleeve (3) arranged around the outer circumference thereof, the second thread (31) being formed on the outer circumferential wall of the connecting sleeve (3).

3. An electric machine according to claim 2, characterized in that the inner wall of the outer housing (1) is configured with a plurality of first grooves (12) extending in its axial direction, the notches of the first grooves (12) facing towards the stator assembly (2) side.

4. The electric machine according to claim 3, characterized in that the outer circumferential wall of the connecting sleeve (3) is formed with a plurality of second grooves (32) extending in the axial direction thereof, and when the first threads (11) and the second threads (31) are screwed to a predetermined position, the plurality of first grooves (12) and the plurality of second grooves (32) are respectively penetrated in the axial direction of the outer housing (1) in a one-to-one correspondence to form a plurality of cooling channels (4) together.

5. A machine as claimed in claim 3, characterized in that a plurality of said first grooves (12) are evenly spaced in the circumferential direction of the outer casing (1).

6. An electric machine according to claim 4, characterized in that the sum of the lengths of the first grooves (12) in the direction of the thread extension of the first thread (11) is La, the sum of the lengths of the threads of the first thread (11) is Lb, 0.2Lb La 0.25 Lb.

7. The machine according to claim 2, characterized in that the first thread (11) extends from a first end face to a second end face of the outer housing (1).

8. The electric machine according to claim 7, further comprising a first end cap (51) connected to the first end face, wherein the first end cap (51) has a first rim (511), a side of the first rim (511) facing the first end face is in sealing connection with the first end of the connecting sleeve (3), and an outer circumferential wall of the first rim (511) has a gap with an inner wall of the outer housing (1); and/or, still include second end cover (52), connect in on the second terminal surface, second end cover (52) have second flange (521), second flange (521) towards one side of second terminal surface with sealing connection between the second end of connecting sleeve (3), the outer periphery wall of second flange (521) with have the clearance between the inner wall of shell body (1).

9. An electric machine according to claim 2, characterized in that the stator core (21) is in an interference fit with the connecting sleeve (3).

10. An air conditioner comprising an electric motor, wherein the electric motor is as claimed in any one of claims 1 to 9.

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