Motor, air conditioner and control method thereof

Abstract

The application relates to an electric machine, an air conditioner and a control method thereof, comprising a rotor, a stator and a magnetic gap adjusting unit. The stator is matched with the rotor, the stator and the rotor are spaced apart to form a magnetic gap in a first direction, and the stator can move back and forth relative to the rotor in the first direction. The magnetic gap adjusting unit directly or indirectly acts between the stator and the rotor, and is used for adjusting the spacing distance of the stator and the rotor in the first direction. Thus, the change of the electric machine rotating speed can be adapted, so that the electric machine rotating speed can still be kept at a smaller noise level when the electric machine rotating speed changes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioner parts, in particular to a motor, an air conditioner and a control method thereof. BACKGROUND

[0002] As a driving element, a motor is widely used in air conditioners and other devices. The motor includes a stator and a rotor. When the motor operates, the rotor rotates relative to the stator to output a driving torque to drive a load to rotate. When the stator and the rotor rotate relative to each other, noise is generated, especially when the motor operates, which has a large noise, affecting the use performance. SUMMARY

[0003] In view of the problem of large noise during operation of the motor, the present application provides a motor, an air conditioner and a control method thereof. The size of the magnetic gap between the rotor and the stator is flexibly adjusted, so that even if the speed changes during operation of the motor, it can be kept at a small noise level.

[0004] A motor includes:

[0005] a rotor;

[0006] a stator corresponding to the rotor, the stator and the rotor being spaced apart to form a magnetic gap in a first direction, the stator being movable back and forth relative to the rotor in the first direction;

[0007] a magnetic gap adjustment unit acting directly or indirectly between the stator and the rotor for adjusting the spacing distance of the stator and the rotor in the first direction.

[0008] In one embodiment, the stator includes a plurality of sub-units, all the sub-units being arranged around the periphery of the rotor along a first circumferential direction, and each sub-unit being spaced apart, the first direction being a radial direction corresponding to the first circumferential direction, each sub-unit being movable back and forth relative to the rotor in the corresponding first direction;

[0009] The magnetic gap adjustment unit acts directly or indirectly between each sub-unit and the rotor for adjusting the spacing distance of each sub-unit and the rotor in the corresponding first direction.

[0010] In one embodiment, the magnetic gap adjustment unit includes a plurality of branch adjustment units, each branch adjustment unit corresponding to one sub-unit, each branch adjustment unit acting directly or indirectly between the corresponding sub-unit and the rotor for adjusting the size of the magnetic gap between the corresponding sub-unit and the rotor.

[0011] In one of the embodiments, the magnetic gap adjustment further comprises a driving component, each of the branch adjustment units comprises a driven component, the driven components correspond to the sub-units one by one, each of the driven components is fitted between the driving component and one of the sub-units, and is used to drive the corresponding sub-unit to move in the first direction according to the movement of the driving component.

[0012] In one of the embodiments, the driving component comprises a rotating member, an axis of rotation of the rotating member is collinear with the axis corresponding to the first circumference, the rotating member is rotatable relative to the stator, and the axis of rotation is the axis of rotation of the rotating member, and the stator is limited in rotational freedom in the first circumference relative to the housing;

[0013] The driven component comprises a connecting rod, a sliding member and a guide member, the sliding member and the guide member are slidingly fitted, and the sliding direction is the first direction, the sliding member is connected with the corresponding sub-unit, the guide member is directly or indirectly connected with the housing of the motor, and the two ends of the connecting rod are rotatably connected with the rotating member and the sliding member respectively.

[0014] In one of the embodiments, all the sub-units are uniformly arranged in the first circumference, and all the connecting rods are uniformly arranged in the circumference in which the rotating member rotates;

[0015] And / or, the connecting rod is hinged with the rotating member, and the axis of the hinge is parallel to the axis of rotation of the rotating member;

[0016] And / or, the connecting rod is hinged with the sliding member, and the axis of the hinge is parallel to the axis of rotation of the rotating member.

[0017] In one of the embodiments, the rotor is provided with a first rotating shaft, the first rotating shaft is coaxially arranged with the rotor, the rotating member is opposite to one end surface of the rotor, the rotating member is provided with a through hole, the first rotating shaft is inserted into the through hole, and a bearing is arranged between the rotating member and the first rotating shaft.

[0018] In one of the embodiments, the driving component further comprises a driving member and a gear, the rotating member is provided with meshing teeth arranged along an arc path, an axis of the arc path is the axis of rotation of the rotating member, the gear is engaged with the meshing teeth, the driving member is in transmission fit with the gear, and is used to drive the gear to rotate so as to rotate the rotating member.

[0019] In one of the embodiments, the rotating member is opposite to an end surface of the rotor, positions for rotationally connecting with the connecting rods are distributed on a first cross section of the rotating member, and the arcuate paths are distributed on a second cross section of the rotating member, the first cross section being located on a side of the second cross section close to the rotor.

[0020] In one of the embodiments, the rotating member is a rotating disc provided with a ring of the engagement teeth.

[0021] In one of the embodiments, the motor comprises two magnetic gap adjustment units arranged on two sides of the stator.

[0022] In one of the embodiments, the relative position of the rotor with respect to the housing of the motor in the first direction is fixed, and the magnetic gap adjustment unit acts between the stator and the housing of the motor to adjust the relative position of the stator with respect to the housing of the motor in the first direction.

[0023] An air conditioner comprising the motor described above.

[0024] A control method of an air conditioner, the air conditioner being the air conditioner described above, the control method comprising the following steps:

[0025] When the real-time noise A of the motor comprised by the air conditioner is greater than a preset noise value a, and the real-time input power P of the motor is greater than a preset power value b, the magnetic gap adjustment unit is controlled to move.

[0026] The above scheme provides a motor, an air conditioner and a control method thereof, the magnetic gap adjustment unit being capable of flexibly adjusting the magnetic gap size between the stator and the rotor, thereby adapting to the change of the motor speed, and enabling the motor to remain at a lower noise level when the motor speed changes. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated in and constitute a part of this application. The embodiments of the application illustrated in the drawings, and their description, are presented to explain the present application and are not intended to limit the present application unduly.

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these accompanying drawings without any creative effort.

[0029] Figure 1 An exploded view of the motor described in the embodiments;

[0030] Figure 2 Structure diagram of the stator and the rotor combination according to the embodiment;

[0031] Figure 3 Structure diagram of the magnetic gap adjusting unit according to the embodiment;

[0032] Figure 4 Front view of the gap adjusting unit according to the embodiment;

[0033] Figure 5 Flow chart of the air conditioner control method according to the embodiment.

[0034] Explanation of reference signs:

[0035] 10, motor; 11, stator; 111, subunit; 12, rotor; 121, first rotating shaft; 13, magnetic gap; 14, magnetic gap adjusting unit; 141, driving component; 1411, rotating piece; 1412, driving piece; 1413, gear; 1414, meshing tooth; 1415, perforation; 142, driven component; 1421, connecting rod; 1422, sliding piece; 1423, guiding piece; 1424, sliding slot. DETAILED DESCRIPTION

[0036] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0037] As shown in Figure 1 and Figure 2 , a general motor 10 includes a rotor 12 and a stator 11, the stator 11 and the rotor 12 are correspondingly matched, and the relative movement between the two converts electrical energy into mechanical energy such as torque to drive the load to rotate.

[0038] The motor 10 has the problem of loud noise during operation, especially when the motor 10 speed changes, it is difficult to control the noise within a small range.

[0039] Based on this, the present application improves a motor 10, as shown in Figure 1 , including a rotor 12, a stator 11 and a magnetic gap adjusting unit 14. Wherein the stator 11 and the rotor 12 are correspondingly matched. The stator 11 and the rotor 12 are spaced apart in a first direction to form a magnetic gap 13. For example, as shown in Figure 2As shown, the stator 11 surrounds the rotor 12 along the first circumferential direction, and the stator 11 and the rotor 12 are arranged at intervals to form the magnetic gap 13. The first direction F1 is the radial direction corresponding to the first circumferential direction F2.

[0040] In other embodiments, the rotor 12 surrounds the stator 11 along a second circumferential direction, and the stator 11 and the rotor 12 are spaced apart to form the magnetic gap 13, wherein the first direction is the radial direction corresponding to the second circumferential direction.

[0041] Alternatively, the stator 11 and the rotor 12 can be arranged in other configurations, as long as they can convert electrical energy into mechanical energy. In this configuration, the first direction is the direction in which the stator 11 and the rotor 12 are spaced apart to form a magnetic gap 13.

[0042] like Figure 1 and Figure 2 As shown, the stator 11 is capable of moving back and forth relative to the rotor 12 in the first direction. When the stator 11 moves back and forth relative to the rotor 12 in the first direction, the size of the magnetic gap 13 changes. Figure 2 As shown, the size of the magnetic gap 13 is the distance L between the stator 11 and the rotor 12 in the first direction. By adjusting the size of the magnetic gap 13 between the stator 11 and the rotor 12, the noise level of the motor 10 during operation can be changed.

[0043] Furthermore, such as Figure 1 As shown, the motor 10 also includes a magnetic gap adjustment unit 14, which acts directly or indirectly between the stator 11 and the rotor 12 to adjust the spacing between the stator 11 and the rotor 12 in the first direction.

[0044] The magnetic gap adjustment unit 14 can be used to flexibly adjust the size of the magnetic gap 13 between the stator 11 and the rotor 12, so that the motor 10 can still maintain a low noise level when the speed of the motor 10 changes.

[0045] Specifically, the magnetic gap adjusting unit 14 can be a unit directly acting between the stator 11 and the rotor 12, such as providing an annular limiting portion on the rotor 12, the axis of the annular limiting portion is collinear with the rotation axis of the rotor 12. The magnetic gap adjusting unit 14 includes a telescopic assembly, one end of the telescopic assembly is limited on the annular limiting portion, the telescopic assembly can relatively slide in the circumferential direction of the annular limiting portion relative to the annular limiting portion, in other words, the telescopic assembly does not rotate with the rotor 12 when the rotor 12 rotates. The freedom of movement between the telescopic assembly and the rotor 12 in the first direction is limited. The other end of the telescopic assembly is connected with the stator 11, the telescopic direction of the telescopic assembly is the first direction. The telescopic assembly telescopes, that is, the gap between the stator 11 and the rotor 12 can be adjusted.

[0046] In one embodiment, the annular limiting portion is an annular limiting groove provided on the end face of the rotor 12, and one end of the telescopic assembly is provided with a sliding block located in the annular limiting groove. The sliding block can slide in the circumferential direction of the annular limiting groove in the annular limiting groove. The freedom of movement of the sliding block relative to the annular limiting groove in the first direction is limited, in other words, the annular limiting groove cannot move out of the annular limiting groove in the first direction.

[0047] Optionally, the magnetic gap adjusting unit 14 indirectly acts between the stator 11 and the rotor 12, and indirectly adjusts the distance between the stator 11 and the rotor 12 in the first direction. For example, the magnetic gap adjusting unit 14 directly acts between the stator 11 and the housing of the motor 10, and the relative position of the rotor 12 relative to the housing of the motor 10 in the first direction is fixed, so only the relative position of the stator 11 relative to the housing of the motor 10 in the first direction needs to be adjusted, that is, the distance between the stator 11 and the rotor 12 in the first direction is indirectly adjusted.

[0048] In one embodiment, the housing of the motor 10 includes an end cover, and the end cover is opposite to the end face of the rotor 12. The magnetic gap adjusting unit 14 acts between the stator 11 and the end cover, and is used to adjust the position of the stator 11 relative to the end cover in the first direction.

[0049] In one embodiment, the magnetic gap adjusting unit 14 includes a telescopic assembly, and the telescopic assembly is connected between the housing of the motor 10 and the stator 11. The telescopic direction of the telescopic assembly is the first direction.

[0050] Further, in some embodiments, as Figure 1 and Figure 2As shown, the stator 11 comprises a plurality of sub-units 111, all of which are circumferentially arranged around the periphery of the rotor 12 in a first direction, and each of which is arranged at intervals. The first direction is a radial direction corresponding to the first circumferential direction, and each of the sub-units 111 can move back and forth in the corresponding first direction relative to the rotor 12. It should be noted that different sub-units 111 correspond to different radii, so the first direction corresponding to different sub-units 111 is different.

[0051] When each of the sub-units 111 moves in the corresponding first direction, the radius of the circle defined by the positions of all the sub-units 111 changes, i.e., the magnetic gap 13 between each of the sub-units 111 and the rotor 12 changes.

[0052] The magnetic gap adjustment unit 14 directly or indirectly acts between each of the sub-units 111 and the rotor 12, and is used to adjust the interval distance between each of the sub-units 111 and the rotor 12 in the corresponding first direction. That is, the size of the magnetic gap 13 between the sub-units 111 and the rotor 12 is adjusted.

[0053] In one embodiment, the magnetic gap adjustment unit 14 comprises a plurality of branch adjustment units, each of which corresponds to one of the sub-units 111. Each of the branch adjustment units directly or indirectly acts between the corresponding sub-unit 111 and the rotor 12, and is used to adjust the size of the magnetic gap between the corresponding sub-unit 111 and the rotor 12.

[0054] The branch adjustment unit comprises a telescopic assembly corresponding to the sub-unit 111, and one end of the telescopic assembly for connecting with the stator 11 is connected with the sub-unit 111.

[0055] In another embodiment, as shown in Figure 1 , Figure 3 and Figure 4 The magnetic gap adjustment unit 14 further comprises a driving assembly 141. Each of the branch adjustment units comprises a driven assembly 142 corresponding to the sub-unit 111, and each of the driven assemblies 142 is fitted between the driving assembly 141 and one of the sub-units 111, and is used to drive the corresponding sub-unit 111 to move in the first direction according to the movement of the driving assembly 141.

[0056] When the driving assembly 141 moves, each of the driven assemblies 142 moves synchronously, thereby synchronously moving each of the sub-units 111.

[0057] Further, in one embodiment, as shown inFigure 1 , Figure 3 and Figure 4 As shown, the active component 141 includes a rotating member 1411, the rotation axis of the rotating member 1411 is collinear with the axis corresponding to the first circumferential direction, the rotating member 1411 is rotatable relative to the stator 11, and the rotation axis is the rotation axis of the rotating member 1411.

[0058] Specifically, the rotating component 1411 can be fitted around the stator 11 or face the end face of the stator 11.

[0059] When the rotating component 1411 rotates, each of the driven components 142 moves synchronously, carrying each of the sub-units 111 to move synchronously.

[0060] More specifically, such as Figure 3 and Figure 4 As shown, the driven component 142 includes a connecting rod 1421, a sliding member 1422, and a guide member 1423. The sliding member 1422 and the guide member 1423 are slidably engaged, and the sliding direction is the first direction. The sliding member 1422 is connected to the corresponding sub-unit 111. The first direction corresponds to the sub-unit 111.

[0061] The rotational freedom of the stator 11 relative to the housing in the first circumferential direction is restricted. The guide member 1423 is directly or indirectly connected to the housing of the motor 10, for example, directly or indirectly connected to the end cover of the motor 10. The two ends of the connecting rod 1421 are rotatably connected to the rotating member 1411 and the sliding member 1422, respectively.

[0062] Since the guide member 1423 is directly or indirectly connected to the housing of the motor 10, when the rotating member 1411 rotates, the sliding member 1422, which is slidably engaged with the guide member 1423, cannot move in the rotation direction of the rotating member 1411. Therefore, the connecting rod 1421 rotates relative to the rotating member 1411 and the sliding member 1422, causing the sliding member 1422 to move relative to the guide member 1423 in the corresponding first direction, thereby causing the sub-unit 111 connected to the sliding member 1422 to move.

[0063] like Figure 3 and Figure 4 As shown, the sliding member 1422 is disposed on the end face of the subunit 111, and the guide member 1423 is disposed on the housing of the motor 10 facing the sliding member 1422. The guide member 1423 is provided with a groove 1424 facing the sliding member 1422. The guiding direction of the groove 1424 is the first direction, and the sliding member 1422 is slidably engaged in the groove 1424.

[0064] Specifically, in one embodiment, as shown in Figure 3 and Figure 4 the connecting rod 1421 is hinged with the rotating member 1411, and the axis of the hinge is parallel to the rotating axis of the rotating member 1411.

[0065] the connecting rod 1421 is hinged with the sliding member 1422, and the axis of the hinge is parallel to the rotating axis of the rotating member 1411.

[0066] Alternatively, in other embodiments, the connecting rod 1421 is connected with the rotating member 1411 through a universal joint. The connecting rod 1421 is connected with the sliding member 1422 through a universal joint.

[0067] In one embodiment, as shown in Figure 1 all the sub-units 111 are arranged evenly in the first circumferential direction, and all the connecting rods 1421 are arranged evenly in the circumferential direction of the rotating member 1411. This ensures that each sub-unit 111 can move synchronously, so that the magnetic gap 13 in each orientation is consistent.

[0068] Further, in one embodiment, as shown in Figure 1 the rotor 12 is provided with a first rotating shaft 121, which is coaxially arranged with the rotor 12. The rotating member 1411 is opposite to one end surface of the rotor 12, and the rotating member 1411 is provided with a through hole 1415, in which the first rotating shaft 121 is inserted. A bearing (not shown in the figure) is arranged between the rotating member 1411 and the first rotating shaft 121.

[0069] The rotating member 1411 is supported by the first rotating shaft 121 through the bearing, and the rotor 12 and the rotating member 1411 can rotate independently of each other without interfering with each other. In other words, when the rotor 12 rotates, the rotating member 1411 can be kept from rotating relative to the stator 11, and only when it is necessary to adjust the magnetic gap 13, the rotating member 1411 needs to be rotated.

[0070] Further, as shown in Figure 1 , Figure 3 and Figure 4As shown, in one embodiment, the driving assembly 141 further comprises a driving member 1412 and a gear 1413. The rotating member 1411 is provided with engagement teeth 1414 arranged along an arc path, the axis of the arc path being the rotation axis of the rotating member 1411, and the gear 1413 is engaged with the engagement teeth 1414. The driving member 1412 is in transmission cooperation with the gear 1413, for driving the gear 1413 to rotate and thus drive the rotating member 1411 to rotate.

[0071] When it is necessary to adjust the magnetic gap 13, the driving member 1412 is operated, and the gear 1413 and the rotating member 1411 are both rotated, so as to drive each of the driven assemblies 142 to move, and thus move each of the sub-units 111 relative to the rotor 12.

[0072] Specifically, in one embodiment, as shown in Figure 4 As shown, the rotation axis of the gear 1413 is parallel to the axis of the arc path. The driving member 1412 is a stepping motor 10.

[0073] The arc path can be a semicircular arc path or a path surrounding a complete circle, as long as it meets the rotation requirement during the adjustment of the magnetic gap 13.

[0074] As shown in Figure 1 As shown, the rotating member 1411 is opposite to one end surface of the rotor 12, the positions of the rotating member 1411 for rotationally connecting with each of the connecting rods 1421 are distributed on a first cross section of the rotating member 1411, and the arc path is distributed on a second cross section of the rotating member 1411, the first cross section being located on the side of the second cross section close to the rotor 12. Such an arrangement makes the overall structure of the motor 10 more compact and occupies less space.

[0075] Specifically, in one embodiment, as shown in Figure 3 and Figure 4 As shown, the rotating member 1411 is a rotating disc. The rotating disc is provided with a ring of the engagement teeth 1414.

[0076] Further, in some embodiments, the motor 10 comprises two magnetic gap adjustment units 14, which are oppositely arranged on the two sides of the stator 11. Thus, the two sides of the stator 11 are both subjected to force, so that the movement is more stable.

[0077] Specifically, in one embodiment, the rotor 12 is in a columnar structure, and the two magnetic gap adjustment units 14 are respectively opposite to the two end surfaces of the rotor 12.

[0078] In yet another embodiment, an air conditioner is provided, which comprises the motor 10 described above. By using the motor 10 described in any of the above embodiments, the size of the magnetic gap 13 can be flexibly adjusted during use, and the optimal magnetic gap 13 can be selected, so that the motor 10 has smaller noise when the rotating speed is adjusted.

[0079] As shown in Figure 5 In yet another embodiment, an air conditioner control method is provided, the air conditioner being the air conditioner described above, and the control method comprising the following steps:

[0080] When the real-time noise A of the motor 10 included in the air conditioner is greater than a preset noise value a, and the real-time input power P of the motor 10 is greater than a preset power value b, the magnetic gap adjusting unit 14 is controlled to move.

[0081] When the real-time noise A of the motor 10 is greater than the preset noise value a, and the real-time input power P of the motor 10 is greater than the preset power value b, the magnetic gap adjusting unit 14 moves to adjust the size of the magnetic gap 13 between the stator 11 and the rotor 12, thereby reducing the noise. When the real-time noise A of the motor 10 is not greater than the preset noise value a, and the real-time input power P of the motor 10 is not greater than the preset power value b, the magnetic gap adjusting unit 14 stops moving.

[0082] The magnetic gap adjusting unit 14 drives the stator 11 to move relative to the rotor 12 in the first direction within a movement range of 0.8mm-1.4mm in one movement cycle.

[0083] Further, the control method further comprises the following steps:

[0084] The real-time noise A and the real-time input power P are obtained.

[0085] The size relationship between the real-time noise A and the preset noise value a, and the size relationship between the real-time input power P and the preset power value b are compared.

[0086] Specifically, the air conditioner is provided with a noise collector for obtaining the real-time noise A. The air conditioner is provided with a power analyzer for obtaining the real-time input power P.

[0087] Further, in one embodiment, the control of the movement of the magnetic gap adjusting unit 14 specifically comprises the following steps:

[0088] The driving part 1412 is controlled to move.

[0089] Alternatively, the telescopic assembly is controlled to move.

[0090] In the description of the application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0091] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0092] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0093] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0094] It is to be noted that when an element such as a layer, film, or panel is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that, when an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0095] Any technical features in the above-described embodiments can be combined in any manner, and in order to make the description simple, all possible combinations of technical features in the above-described embodiments are not described, however, as long as the combinations of technical features do not exist in contradiction, it should be considered that the combinations are within the scope of the present disclosure.

[0096] The above-described embodiments are merely representative of several embodiments of the present disclosure, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for those skilled in the art, without departing from the concept of the present disclosure, a number of modifications and improvements can be made, which are within the scope of the present disclosure. Therefore, the scope of protection of the patent of the present disclosure should be subject to the appended claims.

Claims

1. An electric motor, characterized in that, include: Rotor; The stator corresponds to and matches the rotor, the stator and the rotor are spaced apart in a first direction to form a magnetic gap, and the stator is able to move back and forth in the first direction relative to the rotor; A magnetic gap adjustment unit, which acts directly or indirectly between the stator and the rotor, is used to adjust the spacing between the stator and the rotor in the first direction; The stator includes multiple sub-units, all of which surround the rotor along a first circumferential direction. The magnetic gap adjustment unit further includes an active component. The magnetic gap adjustment unit includes multiple branch adjustment units, each of which corresponds to a subunit. Each branch adjustment unit includes a driven component. The active component includes a rotating member whose rotation axis is collinear with the axis corresponding to the first circumferential direction. The rotating member is rotatable relative to the stator, and the rotation axis is the rotation axis of the rotating member. The rotational freedom of the stator relative to the housing in the first circumferential direction is restricted. The driven component includes a connecting rod, a sliding member, and a guide member. The sliding member and the guide member are slidably engaged, and the sliding direction is the first direction. The sliding member is connected to the corresponding sub-unit, and the guide member is directly or indirectly connected to the housing of the motor. The two ends of the connecting rod are rotatably connected to the rotating member and the sliding member, respectively.

2. The motor according to claim 1, characterized in that, The sub-units are arranged at intervals, the first direction is the radial direction corresponding to the first circumferential direction, and each sub-unit can move back and forth relative to the rotor in the corresponding first direction. The magnetic gap adjustment unit acts directly or indirectly between each of the sub-units and the rotor to adjust the spacing between each sub-unit and the rotor in the corresponding first direction.

3. The motor according to claim 2, characterized in that, Each of the branch adjustment units acts directly or indirectly between the corresponding sub-unit and the rotor to adjust the magnetic gap size between the corresponding sub-unit and the rotor.

4. The motor according to claim 3, characterized in that, Each of the branch adjustment units includes a driven component, which corresponds one-to-one with the sub-unit. Each driven component is engaged between the active component and a sub-unit, and is used to drive the corresponding sub-unit to move in the first direction according to the movement of the active component.

5. The motor according to claim 1, characterized in that, All the sub-units are evenly spaced in the first circumferential direction, and all the connecting rods are evenly spaced in the circumferential direction of the rotating component. And / or, the connecting rod is hinged to the rotating member, and the axis of this hinge is parallel to the rotation axis of the rotating member; And / or, the connecting rod is hinged to the sliding member, and the axis of this hinge is parallel to the rotation axis of the rotating member.

6. The motor according to claim 1, characterized in that, The rotor is provided with a first rotating shaft, which is coaxially arranged with the rotor. The rotating component is opposite to one end face of the rotor. The rotating component is provided with a through hole, and the first rotating shaft is inserted into the through hole. A bearing is provided between the rotating component and the first rotating shaft.

7. The motor according to claim 1, characterized in that, The active component further includes a drive member and a gear. The rotating member has meshing teeth arranged along an arc path, and the axis of the arc path is the rotation axis of the rotating member. The gear meshes with the meshing teeth, and the drive member is in transmission cooperation with the gear to drive the gear to rotate, thereby rotating the rotating member.

8. The motor according to claim 7, characterized in that, The rotating component is opposite to one end face of the rotor. The positions on the rotating component for rotatably connecting with each of the connecting rods are distributed on the first cross-section of the rotating component. The arc path is distributed on the second cross-section of the rotating component. The first cross-section is located on the side of the second cross-section closer to the rotor. And / or, the rotating component is a rotating disk, and the rotating disk is provided with a ring of meshing teeth.

9. The motor according to any one of claims 1 to 8, characterized in that, The motor includes two magnetic gap adjustment units, which are arranged opposite to each other on both sides of the stator; And / or, the relative position of the rotor with respect to the motor housing in the first direction is fixed, and the magnetic gap adjustment unit acts between the stator and the motor housing to adjust the relative position of the stator and the motor housing in the first direction.

10. An air conditioner, characterized in that, Includes the motor as described in any one of claims 1 to 9.

11. An air conditioner control method, characterized in that, The air conditioner is the air conditioner according to claim 10, and the control method includes the following steps: When the real-time noise A of the motor included in the air conditioner is greater than the preset noise value a, and the real-time input power P of the motor is greater than the preset power value b, the magnetic gap adjustment unit is controlled to move.

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