Cross-flow wind wheel assembly and air conditioner

Abstract

The invention discloses a cross-flow wind wheel assembly and an air conditioner. The cross-flow wind wheel assembly comprises an axial magnetic flux motor and a cross-flow wind wheel. Wherein the axial magnetic flux motor comprises a stator and a rotor, the rotor is arranged on one side of the axis direction of the stator, and a first gap is formed between the rotor and the stator; the rotor is fixed to the end face of one side of the cross-flow wind wheel, a rotating shaft is fixedly arranged on the first end face of the cross-flow wind wheel, and the rotating shaft penetrates through the rotor and the stator. According to the cross-flow wind wheel assembly and the air conditioner, at least the problems that in the prior art, when a cross-flow wind wheel and an axial flux motor are assembled, the axial size is large, and assembling is complex can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a crossflow fan assembly and an air conditioner. Background Art

[0002] At present, the conventional way to drive a crossflow fan is to bring out the shaft of the inner rotor motor and the crossflow fan wheel. The crossflow fan wheel has a shaft and oil-containing bearing on one side, and a sleeve on the other side. The sleeve has a fastening screw. The motor shaft is inserted into the sleeve on one side of the crossflow fan wheel, and the fastening screw is screwed in to support the motor shaft, so that the motor shaft and the center of the crossflow fan wheel coincide. The motor is driven to drive the crossflow fan wheel to rotate. However, the inner rotor motor and the fan wheel structure have a large axial space, and the assembly is complicated. The motor needs two bearings, which is costly and has the problem of electrical corrosion of the bearings. Summary of the invention

[0003] The main purpose of the present invention is to provide a crossflow fan assembly and an air conditioner, which at least solves the problems of large axial size and complex assembly when the crossflow fan is assembled with the axial flux motor in the prior art.

[0004] According to one aspect of the present invention, there is provided a crossflow wind wheel assembly, comprising:

[0005] An axial flux motor, comprising a stator and a rotor, wherein the rotor is arranged on one side of the stator axis direction, and a first gap is provided between the rotor and the stator;

[0006] The crossflow wind wheel has a rotor fixed to an end surface on one side of the crossflow wind wheel, a rotating shaft is fixedly provided on a first end surface of the crossflow wind wheel, and the rotating shaft penetrates the rotor and the stator.

[0007] Furthermore, the rotor comprises a magnetic ring.

[0008] Furthermore, the rotor includes a magnetic steel ring and a plurality of sector-shaped magnetic tiles, wherein the plurality of sector-shaped magnetic tiles are arranged in sequence along the same circumferential direction to form an annular structure, and the polarities of two adjacent sector-shaped magnetic tiles are different, and the magnetic steel ring is adhesively fixed to the annular structure.

[0009] Further, the rotor is fixed to the crossflow impeller by injection molding; or,

[0010] The rotor is bonded and fixed to the crossflow impeller.

[0011] Furthermore, the rotating shaft is fixed to the crossflow impeller by injection molding.

[0012] Further, the stator comprises a yoke and stator teeth, and the yoke is arranged in a ring shape;

[0013] The stator teeth protrude from the surface of the yoke portion along the axial direction of the yoke portion, and the stator teeth include a plurality of them, and the plurality of stator teeth are arranged at intervals along the circumferential direction of the yoke portion and surround to form winding slots, and in the same stator tooth, the stator tooth includes a first tooth segment located on the inner side of the yoke portion and a second tooth segment located on the outer side of the yoke portion;

[0014] Wherein, along the direction from the inner side of the yoke to the outer side of the yoke, the width of the first tooth segment along the width direction of the stator tooth becomes wider, and the width of the second tooth segment along the width direction of the stator tooth remains unchanged.

[0015] Furthermore, the stator further includes a plastic packaging body and a winding, wherein the winding is wound around the stator teeth, and the plastic packaging body is coated on an outer surface of a structure formed by the stator teeth, the yoke and the winding.

[0016] Furthermore, the crossflow impeller assembly further comprises a spacer sleeve, which is sleeved on the outer circumference of the rotating shaft, and two ends of the spacer sleeve respectively abut against the crossflow impeller and the first bearing to provide the first gap between the stator and the rotor.

[0017] Furthermore, the minimum width δ of the first gap satisfies the relationship: 0.4 mm≤δ≤1.0 mm.

[0018] Furthermore, the crossflow wind wheel assembly also includes a mounting base and an adjustable self-adjusting bearing, the stator and the adjustable self-adjusting bearing are arranged on the mounting base at intervals, and both ends of the crossflow wind wheel are rotatably connected to the adjustable self-adjusting bearing and the first bearing.

[0019] Furthermore, the crossflow wind wheel assembly also includes a dustproof structure, which is arranged between the axial flux motor and the crossflow wind wheel and is surrounded by an outer peripheral side of the first gap.

[0020] Furthermore, the dustproof structure includes a first dustproof ring, which is arranged at one end of the crossflow impeller close to the axial flux motor, and the first dustproof ring is arranged around the outer circumference of the rotor and forms a second gap with the outer circumference of the rotor;

[0021] The second dustproof ring is arranged at one end of the axial flux motor close to the crossflow impeller, the second dustproof ring is arranged around the outer peripheral side of the first gap and inserted into the second gap along the axial direction of the axial flux motor.

[0022] On the other hand, the present invention further provides an air conditioner, which includes the above-mentioned crossflow wind wheel assembly.

[0023] In the present invention, by setting the rotor on one side of the axial direction of the stator, that is, the motor in the present application is an axial flux motor, and the rotor is fixedly set on the crossflow wind wheel, the structural strength of the rotor and the crossflow wind wheel is improved, and the coaxiality between the rotor and the crossflow wind wheel is easier to ensure. In actual assembly, the rotor is fixedly set on the crossflow wind wheel, and the rotating shaft on the crossflow wind wheel is sequentially passed through the rotor and the stator. Compared with the outer rotor motor, the volume of the axial flux motor of the present application can be set smaller, which can reduce the axial size of the crossflow wind wheel assembly to a certain extent, and can reduce the difficulty of assembling the crossflow wind wheel and the axial flux motor. In addition, there is a first gap between the rotor and the stator. The existence of the first gap can avoid friction between the stator and the rotor, and can ensure the smooth operation of the axial flux motor. In actual operation, the coaxiality between the crossflow wind wheel and the stator is easier to ensure. When the motor is working, the torque between the stator and the rotor is transmitted, thereby driving the crossflow wind wheel to rotate, reducing the vibration noise of the axial flux motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 It is a schematic structural diagram of a crossflow wind wheel assembly disclosed in an embodiment of the present invention;

[0026] Figure 2 It is a schematic structural diagram of a crossflow wind wheel assembly disclosed in an embodiment of the present invention;

[0027] Figure 3 A schematic structural diagram of a stator of an axial flux motor disclosed in an embodiment of the present invention;

[0028] Figure 4 It is a schematic structural diagram of a yoke disclosed in an embodiment of the present invention;

[0029] Figure 5 A schematic diagram of the tooth punching structure disclosed in an embodiment of the present invention;

[0030] Figure 6 It is a schematic structural diagram of a stator on a crossflow wind wheel assembly disclosed in an embodiment of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of the fan-shaped magnetic tile disclosed in an embodiment of the present invention;

[0032] Figure 8 It is a left side view of the rotor disclosed in the embodiment of the present invention;

[0033] Fig. 9 A schematic diagram of a first dustproof structure disclosed in an embodiment of the present invention;

[0034] Fig.10 A schematic diagram of a second dustproof structure disclosed in an embodiment of the present invention;

[0035] Fig.11 A cross-sectional view of a crossflow wind wheel assembly disclosed in an embodiment of the present invention.

[0036] The above drawings include the following reference numerals:

[0037] 10. Axial flux motor; 11. Stator; 112. Second dustproof ring; 113. Yoke; 1131. Slot; 114. Stator teeth; 115. Winding slot; 116. Tooth punching sheet; 1161. Flange; 11611. First flange; 11612. Second flange; 117. Pole shoe; 118. Insert; 119. Plastic package; 12. Rotor; 121. Magnetic steel ring; 122. Fan-shaped magnetic tile; 20. Crossflow impeller; 21. Rotating shaft; 22. First dustproof ring; 221. First annular protrusion; 30. First gap; 40. Second gap; 50. First bearing; 60. Mounting base; 70. Self-adjusting bearing; 80. Shock-absorbing pad; 90. Spacer; 100. Dust cover; 101. Annular protrusion. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0041] As mentioned in the background technology, when the crossflow wind wheel is assembled with the axial flux motor, the axial dimension of the crossflow wind wheel assembly is large and the assembly is complicated. To this end, the present application proposes a crossflow wind wheel assembly, which can reduce the axial dimension of the crossflow wind wheel assembly to a certain extent, and the assembly of the crossflow wind wheel assembly is simple. The crossflow wind wheel assembly of the present application will be described in detail below in conjunction with the accompanying drawings.

[0042] See also Figures 1 to 11 As shown, according to an embodiment of the present invention, a crossflow wind wheel assembly is provided. Specifically, the crossflow wind wheel assembly includes an axial flux motor 10 and a crossflow wind wheel 20.

[0043] Specifically, the axial flux motor 10 includes a stator 11 and a rotor 12. The rotor 12 is arranged on one side of the axial direction of the stator 11, and a first gap 30 is provided between the rotor 12 and the stator 11. The rotor 12 is fixed to the crossflow impeller 20. A rotating shaft 21 is fixedly provided at the first end of the crossflow impeller 20. The rotating shaft 21 is passed through the rotor 12 and the stator 11.

[0044] In this embodiment, by setting the rotor 12 on one side of the axial direction of the stator 11, and the rotor 12 is fixedly set on the crossflow wind wheel 20, the structural strength of the rotor 12 and the crossflow wind wheel 20 is improved, and the coaxiality between the rotor 12 and the crossflow wind wheel 20 is ensured. In actual assembly, the rotor 12 is fixedly set on the crossflow wind wheel 20, and the rotating shaft 21 on the crossflow wind wheel 20 is penetrated by the rotor 12 and the stator 11. Compared with the outer rotor motor, the volume of the axial flux motor 10 of the present application can be set smaller, which can reduce the axial size of the crossflow wind wheel assembly to a certain extent, and can reduce the difficulty of assembling the crossflow wind wheel 20 and the axial flux motor 10. In addition, there is a first gap 30 between the rotor 12 and the stator 11. The existence of the first gap 30 can avoid friction between the stator 11 and the rotor 12, and can ensure the smooth operation of the axial flux motor 10. In actual operation, the coaxiality between the crossflow wind wheel 20 and the stator 11 is easier to ensure. When the axial flux motor 10 is working, the torque is transmitted between the stator 11 and the rotor 12 , thereby driving the crossflow impeller 20 to rotate, thereby reducing the vibration noise of the axial flux motor 10 .

[0045] That is to say, by fixing the rotor 12 on the crossflow wind wheel 20 and then assembling it with the stator 11, the axial size of the crossflow wind wheel assembly can be reduced, which is conducive to the miniaturization design of the air conditioner and reduces the difficulty of assembling the crossflow wind wheel assembly.

[0046] like Figure 7 and Figure 8 As shown, in this embodiment, the rotor 12 can be a magnetic ring. The magnetic ring has a good suppressing effect on high-frequency noise. In this way, the use of the magnetic ring in the crossflow wind wheel assembly can make the normal and useful signals between the rotor 12 and the stator 11 pass well, and can well suppress the passage of high-frequency interference signals, and the production cost of the magnetic ring is low.

[0047] Furthermore, the rotor 12 may also be a combination structure of a magnetic steel ring 121 and a plurality of fan-shaped magnetic tiles 122. When a structure of a combination of a magnetic steel ring 121 and a fan-shaped magnetic tile 122 is adopted, the magnetic steel ring 121 is connected to the end of the crossflow wind wheel 20, and the fan-shaped magnetic tile 122 is arranged on one side of the stator 11. The magnetic fields on the N-pole and S-pole sides of the fan-shaped magnetic tile 122 respectively enter the yoke 113 of the stator 11 and form a closed magnetic circuit. The fan-shaped magnetic tile 122 can be fixed to the magnetic steel ring 121 by bonding. A plurality of fan-shaped magnetic tiles 122 are arranged in sequence along the same circumferential direction to form an annular structure, and the polarities of two adjacent fan-shaped magnetic tiles 122 are different (i.e., the polarity of one fan-shaped magnetic tile 122 is the N-pole, and the polarity of the other fan-shaped magnetic tile 122 is the S-pole), and the magnetic steel ring 121 is bonded and fixed to the annular structure. Exemplarily, the number of the sector-shaped magnetic tiles 122 may be 2, 4, 6, 8, etc., as long as the polarities of two adjacent sector-shaped magnetic tiles 122 are different.

[0048] In this embodiment, the magnetic ring also has the advantages of high mechanical precision, good coaxiality, strong customizability, good formability, large magnetic flux and high magnetic field strength, and easy installation. It is preferred to set the magnetic ring as the rotor 12.

[0049] like Figure 2 As shown, the rotor 12 can be fixed on the crossflow impeller 20 by injection molding. The rotor 12 and the crossflow impeller 20 are fixed together by injection molding, which enhances the structural strength between the rotor 12 and the crossflow impeller 20. When the axial flux motor 10 drives the crossflow impeller 20 to rotate, the coaxiality between the crossflow impeller 20 and the stator 11 is more easily ensured, and the uniformity of the axial air gap between the rotor 12 and the stator 11 is ensured, thereby reducing the vibration noise of the axial flux motor 10.

[0050] Furthermore, the rotor 12 can also be fixed to the crossflow wind wheel 20 by gluing. Exemplarily, the rotor 12 can be directly glued to the end of the crossflow wind wheel 20 close to the stator 11 by gluing, or it can be fixed by plugging and gluing between the rotor 12 and the crossflow wind wheel 20. In other embodiments of the present application, a positioning protrusion (not shown in the figure) is provided on one of the rotor 12 and the crossflow wind wheel 20, and a positioning groove (not shown in the figure) adapted to the positioning protrusion is provided on the other of the two. That is to say, when the positioning protrusion is provided on the crossflow wind wheel 20, the positioning groove is provided on the rotor 12; when the positioning protrusion is provided on the rotor 12, the positioning groove is provided on the crossflow wind wheel 20. With such arrangement, during actual assembly, the rotor 12 can be pre-positioned on the crossflow impeller 20 through the cooperation between the positioning protrusion and the positioning groove, and then the rotor 12 and the crossflow impeller 20 can be bonded and fixed together, which has a simple structure and is convenient for bonding.

[0051] In the present application, it is preferred to fix the rotor 12 and the crossflow impeller 20 by injection molding. When glue bonding is used for a long time, the bonding may fail, which may affect the normal use of the crossflow impeller assembly. By using the injection molding method, the rotor 12 and the crossflow impeller 20 are integrally molded by injection molding, and the structure is more stable and reliable, which is convenient for improving the service life of the crossflow impeller assembly in this embodiment.

[0052] See again Figure 2 As shown, the rotating shaft 21 is fixed on the crossflow impeller 20 by injection molding. In this embodiment, the rotating shaft 21 and the crossflow impeller 20 are fixedly arranged in one piece by injection molding. When the axial flux motor 10 drives the crossflow impeller 20 to rotate, the rotating shaft 21 is driven to rotate, which is beneficial to improving the operating performance of the crossflow impeller assembly.

[0053] like Figures 3 to 5As shown, in this embodiment, by setting the width H1 of some stator teeth 114 in the same stator tooth 114 to widen from the inside of the yoke 113 to the outside of the yoke 113, and setting the width H2 of the pole shoe 117 in the same stator tooth 114 along the width direction of the stator tooth 114 to widen from the inside of the yoke 113 to the outside of the yoke 113, the slot width of the winding slot 115 can be smoothly transitioned from the inside of the yoke 113 to the outside of the yoke 113, thereby reducing the sudden change of magnetic flux caused by the large change of the slot width of the winding slot 115. Such a setting can optimize the distribution of magnetic flux between the stator teeth 114 and the pole shoe 117, ensure that the magnetic flux path is more uniform, and is conducive to reducing the torque generated by the interaction between the permanent magnet and the stator tooth 114 caused by the pulsation of the tangential component of the interaction force between the permanent magnet and the stator tooth 114 in the axial flux motor 10, that is, reducing the cogging torque of the axial flux motor 10.

[0054] Therefore, the stator 11 of the axial flux motor 10 can reduce the cogging torque of the axial flux motor 10 and the torque pulsation of the axial flux motor 10 caused by the cogging torque, so as to achieve the purpose of reducing the vibration and noise generated by the axial flux motor 10 due to the torque pulsation. Among them, the more uniform distribution of the magnetic flux between the stator teeth 114 and the pole shoes 117 can ensure that the magnetic flux path is more uniform, thereby reducing the possibility of magnetic flux distortion and local saturation, reducing the amplitude of each harmonic of the stator 11 of the axial flux motor 10, and increasing the frequency of the fundamental wave of the cogging torque, further reducing the vibration and noise generated by the axial flux motor 10. At the same time, the pole shoes 117 can increase the magnetic conductive area and power density of the stator 11 of the axial flux motor 10, optimize the distribution of the electromagnetic field, and enhance the structural strength of the stator 11 of the axial flux motor 10, so that the stator 11 of the axial flux motor 10 can more effectively carry and conduct electromagnetic force, reduce the air gap magnetic resistance of the axial flux motor 10, and further help to reduce the noise generated by the axial flux motor 10.

[0055] Furthermore, if Figures 3 to 5As shown, along the direction from the inner side of the yoke 113 to the outer side of the yoke 113, the width of the first tooth segment along the width direction of the stator tooth 114 becomes wider; the width of the second tooth segment along the width direction of the stator tooth 114 remains unchanged. The widening of the width of the first tooth segment along the width direction of the stator tooth 114 makes the transition of the magnetic flux path smoother, which can reduce the concentration and distortion of the magnetic flux at the edge of the tooth, ensure that the change of the magnetic flux is more uniform, and help to reduce the cogging torque and torque pulsation, thereby reducing the vibration and noise generated by the axial flux motor 10. The width of the second tooth segment along the width direction of the stator tooth 114 remains unchanged, which can increase the slot width of the winding slot 115 of the axial flux motor 10, and also increase the area of ​​the winding slot 115. Correspondingly, when the winding area in the winding slot 115 remains unchanged, the ratio between the winding area in the winding slot 115 and the winding slot 115 decreases, that is, the slot full rate decreases. Since an excessively high slot fill rate will increase the vibration and noise of the motor and also cause a high temperature rise problem, in this embodiment, setting the width of the second tooth segment along the width direction of the stator tooth 114 to be constant can reduce the slot fill rate, thereby reducing the temperature rise level of the noise generated by the axial flux motor 10. At the same time, such a setting can also reduce the circumference of the enameled wire, thereby reducing material costs.

[0056] See also Figure 5As shown, further, in the same stator tooth 114, the flange 1161 includes a first flange portion 11611 and a second flange portion 11612. The first flange portion 11611 and the second flange portion 11612 are respectively arranged on opposite sides of the stator tooth 114 along the width direction, and the width L1 of the first flange portion 11611 along the width direction of the tooth punching sheet 116 is greater than the width L2 of the second flange portion 11612 along the width direction of the tooth punching sheet 116. In this way, the air gaps of the winding slots 115 on both sides of the circumferential direction of the yoke 113 of the same stator tooth 114 can be unequal, so that the effective torque component of the axial flux motor 10 is partially offset, and the average torque of the axial flux motor 10 will also be reduced accordingly. This will cause the air gap flux density distribution to be close to a sine wave, so that the harmonic component of the back electromotive force of the axial flux motor 10 is reduced, the waveform of the back electromotive force of the axial flux motor 10 tends to be more sinusoidal, and the harmonic component of the back electromotive force is reduced. The reduction of the harmonic component of the back electromotive force can reduce the cogging torque of the axial flux motor 10, reduce the operating vibration of the axial flux motor 10, and thus reduce the noise generated by the vibration of the axial flux motor 10. At the same time, the width L1 of the first flange portion 11611 along the width direction of the tooth punching sheet 116 is greater than the width L2 of the second flange portion 11612 along the width direction of the tooth punching sheet 116, and the total harmonic distortion value (i.e., THD value, the full name in English is Total Harmonic Distortion, which is used to measure the degree of distortion of the harmonic component in the signal to the original signal) is reduced. The reduction of the total harmonic distortion value is conducive to reducing the cogging torque and torque pulsation of the axial flux motor 10 and reducing the noise generated by the axial flux motor 10.

[0057] like Figure 4 and Figure 5 As shown, in this embodiment, an insert block 118 is provided on the end of the stator tooth 114 close to the yoke 113, and a slot 1131 adapted to the insert block 118 is provided on the yoke 113. Alternatively, in another embodiment, an insert block 118 is provided on the yoke 113, and a slot 1131 adapted to the insert block 118 is provided on the end of the stator tooth 114 close to the yoke 113. The insert block 118 is inserted into the slot 1131 to quickly fix the stator tooth 114 on the yoke 113. During the operation of the axial flux motor 10, this embodiment can prevent the stator tooth 114 from loosening due to vibration. The assembly method of the insert block 118 and the slot 1131 is simple and fast, and the slot 1131 can also play a pre-positioning role to provide an installation guide for assembling the insert block 118. The yoke 113 and the stator tooth 114 can be produced separately and then assembled.

[0058] like Fig.11As shown, in one embodiment, the stator 11 of the axial flux motor 10 further includes a plastic package 119 and a winding (not shown in the figure), the winding is wound on the stator teeth 114, and the plastic package 119 covers the outer surface of the structure formed by the stator teeth 114, the yoke 113 and the winding. When assembling the stator 11 of the axial flux motor 10, the winding can be firstly wound into an annular coil matching the stator teeth 114, and then the annular coil is sleeved on the stator teeth 114 from one end of the stator teeth 114 close to the yoke 113, and finally the stator teeth 114 with assembled windings are plugged and fixed on the yoke 113. This assembly method solves the problems of low efficiency of winding, winding and punching of the stator 11 of the traditional axial flux motor 10, low efficiency of winding in the winding slot 115, and low effective area of ​​the winding slot 115 caused by the need to leave space for winding needle movement between the windings in the winding slot 115. The plastic package 119 can effectively dissipate the heat of the windings in the stator 11 and improve the working performance of the axial flux motor 10 .

[0059] like Figure 2 As shown, the crossflow wind wheel assembly further includes a spacer 90, which is sleeved on the outer peripheral side of the rotating shaft 21, and the two ends of the spacer 90 respectively abut against the crossflow wind wheel 20 and the first bearing 50 so that there is a first gap 30 between the stator 11 and the rotor 12. The spacer 90 is arranged between the rotor 12 and the first bearing 50, so that there is a certain axial magnetic attraction between the stator 11 and the rotor 12, which can prevent the crossflow wind wheel 20 from being displaced after the crossflow wind wheel assembly is transported and subjected to a drop test.

[0060] like Fig. 9 As shown, there is a first gap 30 between the rotor 12 and the stator 11. The first gap 30 is a standard for measuring the performance and quality of the axial flux motor 10. The first gap 30 ensures the stability and smoothness of the rotation of the axial flux motor 10. In actual design, the size of the first gap 30 should be within an appropriate range. The first gap 30 should not be too large or too small to ensure that the rotor 12 of the axial flux motor 10 can move freely in the first bearing 50 without generating severe vibration and noise; in addition, when the accuracy of the first gap 30 is kept within a reasonable range, it can be ensured that the force and power output by the axial flux motor 10 can meet the expected standard requirements.

[0061] Further, the minimum width δ of the first gap 30 satisfies the relationship: 0.4mm≤δ≤1.0mm. Exemplarily, the value of the minimum width δ can be 0.4mm, 0.5mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, etc. In order to ensure that the axial flux motor 10 can rotate, there must be a first gap 30 between the stator 11 and the rotor 12. The size of the first gap 30 affects the performance of the axial flux motor 10. Specifically, the first gap 30 will affect the power of the axial flux motor 10. When the first gap 30 is uneven, the vibration and noise generated during the operation of the axial flux motor 10 will become larger. In severe cases, it is easy to cause problems such as temperature increase and damage to the first bearing 50. If the first gap 30 is less than 0.4mm, when the axial flux motor 10 is working, it is easy for the eccentricity of the rotor 12 relative to the stator 11 to cause the shaft stiffness to be affected by the unbalanced magnetic pull, causing the rotor 12 to hit the stator 11, resulting in unreliable operation of the axial flux motor 10. In addition, when the first gap 30 is less than 0.4 mm, friction and heat accumulation still occur between the stator 11 and the rotor 12, which have a negative impact on the stability and service life of the axial flux motor 10. If the first gap 30 is greater than 1.0 mm, the magnetic field coupling between the stator 11 and the rotor 12 will be weakened, which will easily lead to a decrease in the efficiency and output power of the axial flux motor 10.

[0062] like Figures 9 to 11 As shown, in this embodiment, the rotor 12 is arranged on one side of the axial direction of the stator 11 and forms a first gap 30 with the stator 11, thereby ensuring the smooth operation of the axial flux motor 10. A dustproof structure is arranged between the stator 11 and the rotor 12, and the dustproof structure is arranged around the outer circumference of the first gap 30, thereby reducing the influence of foreign matter and dust on the axial flux motor 10, improving the performance and service life of the axial flux motor 10, and ensuring the safety of the operation of the axial flux motor 10.

[0063] like Fig.11 As shown, the crossflow wind wheel assembly also includes a mounting base 60 and an adjustable heart bearing 70. Among them, the stator 11 and the adjustable heart bearing 70 are arranged on the mounting base 60 at intervals. Specifically, the stator 11 is mounted on the mounting base 60 through a shock-absorbing pad 80. The provision of the shock-absorbing pad 80 can reduce the vibration generated during the operation of the axial flux motor 10 and transmitted to the mounting base 60 of the crossflow wind wheel assembly. In addition, when assembling the crossflow wind wheel 20 with the axial flux motor 10, it is only necessary to install the stator 11 on the mounting base 60 and fix it through the shock-absorbing pad 80, and insert the crossflow wind wheel 20 with the rotor 12 into the first bearing 50. The installation is simple and the axial size of the crossflow wind wheel assembly is greatly reduced.

[0064] Furthermore, both ends of the crossflow fan wheel 20 can be rotatably connected between the adjustable self-adjusting bearing 70 and the first bearing 50, which can ensure the uniformity of the first gap 30 between the end face of the rotor 12 and the end face of the stator 11, and reduce the vibration noise of the axial flux motor 10; the center of the crossflow fan wheel 20 can also be adjusted according to the center of the first bearing 50 on the side of the axial flux motor 10, to ensure the smooth rotation of the crossflow fan wheel 20, and ensure the coaxiality of the axial flux motor 10 and the crossflow fan wheel 20 and the uniformity of the first gap 30.

[0065] The dustproof structure in the present application includes a first dustproof ring 22 and a second dustproof ring 112. Specifically, the first dustproof ring 22 is arranged at one end of the crossflow wind wheel 20 close to the axial flux motor 10, and the first dustproof ring 22 is arranged around the outer peripheral side of the rotor 12 and forms a second gap 40 with the outer peripheral side of the rotor 12; the second gap 40 can ensure that the second dustproof ring 112 is inserted into the second gap 40, thereby improving the dustproof protection effect of the axial flux motor 10 and the crossflow wind wheel 20. Further, the second dustproof ring 112 is arranged at one end of the axial flux motor 10 close to the crossflow wind wheel 20, and the second dustproof ring 112 is arranged around the outer peripheral side of the first gap 30 and inserted into the second gap 40 along the axial direction of the axial flux motor 10. In this way, the first dustproof ring 22 is arranged around the outer peripheral side of the second dustproof ring 112, and the two dustproof rings form a labyrinth protection structure to prevent foreign matter and dust from entering the first gap 30.

[0066] Specifically, the second dust ring 112 is disposed in different ways according to the size of the stator 11 of the axial flux motor 10 . Fig. 9 The second dust ring 112 is shown as being integrally formed with the axial flux motor 10. That is to say, when the size of the stator 11 is relatively large, the outer peripheral side of the stator 11 can extend into the second gap 40 along the axial direction of the stator 11, and the second dust ring 112 is integrally formed with the axial flux motor 10, thereby reducing the manufacturing cost of the dustproof structure. In some other embodiments, the dustproof structure further includes a dustproof cover 100, which is sleeved on the outer periphery of the axial flux motor 10, and the second dustproof ring 112 is configured as the dustproof cover 100. Fig. 9 and Fig.10 The case where the dust cover 100 is provided is shown. When the size of the stator 11 of the axial flux motor 10 is small, the outer peripheral side of the stator 11 cannot directly extend into the second gap 40. The dust cover 100 is provided on the outer peripheral side of the stator 11 as a second dust ring 112 to protect the first gap 30 between the small-sized axial flux motor 10 and the rotor 12, and prevent foreign matter and dust from entering and affecting the normal operation of the axial flux motor 10.

[0067] Furthermore, an annular protrusion 101 is provided on the dust cover 100, and the annular protrusion 101 is provided on the outer peripheral side of the second dust ring 112 and is coaxially provided with the second dust ring 112, so as to realize the integrated setting of the dust cover 100. And the annular protrusion 101 is located at the end of the first annular protrusion 221 close to the stator 11. Such a setting facilitates the end of the dust cover 100 to be inserted into the second gap 40. In addition, the first annular protrusion 221 and the dust cover 100 work together to prevent dust and foreign matter from entering the first gap 30, thereby ensuring the normal operation of the axial flux motor 10.

[0068] It can be known from the above embodiments that the crossflow wind wheel assembly of the present invention can at least achieve the following technical effects:

[0069] (1) The present invention arranges the rotor on the crossflow impeller by injection molding, and arranges the stator-related parts in an integrated manner first. When the rotor is assembled with the axial flux motor, the axial dimension of the crossflow impeller assembly is shortened, the number of parts is reduced, and the installation cost is reduced;

[0070] (2) The present invention provides a dustproof structure between the crossflow impeller and the axial flux motor, thereby preventing foreign matter or dust from entering the first gap and causing a negative impact on the performance and operation state of the axial flux motor;

[0071] (3) The present invention reduces the problem of high vibration and noise of the axial flux motor by providing an axial flux motor, a stator tooth yoke separation structure, and a combination structure of an adjustable bearing and a non-adjustable bearing.

[0072] According to another aspect of the present application, Figures 1 to 11 As shown, the present application also discloses an air conditioner. The air conditioner includes the above-mentioned crossflow impeller assembly. In the air conditioner, the rotor 12 and the crossflow impeller 20 are combined and arranged by injection molding, and the structure is simple and compact. Compared with the outer rotor motor, the use of the axial flux motor 10 in the air conditioner greatly reduces the axial size of the air conditioner, and realizes the miniaturization design of the air conditioner. The relevant parts of the stator 11 are arranged in one piece, and the operation is simple during installation. In addition, an adjustable bearing 70 is arranged at one end of the crossflow impeller 20, and the stator 11 is installed on the mounting base 60 by using a shock-absorbing pad 80 to ensure a certain coaxiality between the crossflow impeller 20 and the stator 11. When the first bearing 50 and the adjustable bearing 70 are properly adjusted, it is beneficial to maintain the uniformity of the first gap 30, so as to ensure that the rotor 12 of the axial flux motor 10 can move freely in the first bearing 50 without generating serious vibration and noise. A dustproof structure is arranged between the axial flux motor 10 and the crossflow impeller 20 to prevent dust and foreign matter from entering the first gap 30, thereby ensuring the normal operation of the axial flux motor 10.

[0073] Through the above arrangement, the air conditioner can be miniaturized, and the noise generated during operation is small, thereby improving the user's comfort. In addition, the crossflow impeller assembly can avoid being affected by dust and foreign matter to a certain extent, thereby improving the performance of the air conditioner.

[0074] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0075] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0076] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A crossflow wind wheel assembly, characterized in that: include: An axial flux motor (10), the axial flux motor (10) comprising a stator (11) and a rotor (12), the rotor (12) being arranged on one side of the axial direction of the stator (11), and a first gap (30) being provided between the rotor (12) and the stator (11); A crossflow fan wheel (20), wherein the rotor (12) is fixed to an end surface of one side of the crossflow fan wheel (20), a rotating shaft (21) is fixedly provided on a first end surface of the crossflow fan wheel (20), and the rotating shaft (21) passes through the rotor (12) and the stator (11).

2. The crossflow wind wheel assembly according to claim 1, characterized in that: The rotor (12) comprises a magnetic ring.

3. The crossflow wind wheel assembly according to claim 1, characterized in that: The rotor (12) further comprises a magnetic steel ring (121) and a plurality of sector-shaped magnetic tiles (122), wherein the plurality of sector-shaped magnetic tiles (122) are arranged in sequence along the same circumferential direction to form an annular structure, and the polarities of two adjacent sector-shaped magnetic tiles (122) are different, and the magnetic steel ring (121) is adhesively fixed to the annular structure.

4. The crossflow wind wheel assembly according to claim 2 or 3, characterized in that: The rotor (12) is fixed to the crossflow impeller (20) by injection molding; or, The rotor (12) is adhesively fixed to the crossflow impeller (20).

5. The crossflow wind wheel assembly according to claim 1, characterized in that: The rotating shaft (21) is fixed to the crossflow impeller (20) by injection molding.

6. The crossflow wind wheel assembly according to claim 1, characterized in that: The stator (11) comprises a yoke (113) and stator teeth (114), and the yoke (113) is arranged in a ring shape; The stator teeth (114) protrude from the surface of the yoke (113) along the axial direction of the yoke (113), and the stator teeth (114) include a plurality of stator teeth (114). The plurality of stator teeth (114) are arranged at intervals along the circumferential direction of the yoke (113) and surround a winding slot (115). In the same stator tooth (114), the stator tooth (114) includes a first tooth segment located on the inner side of the yoke (113) and a second tooth segment located on the outer side of the yoke (113); Wherein, along the direction from the inner side of the yoke (113) to the outer side of the yoke (113), the width of the first tooth segment along the width direction of the stator tooth (114) becomes wider, and the width of the second tooth segment along the width direction of the stator tooth (114) remains unchanged.

7. The crossflow wind wheel assembly according to claim 6, characterized in that: The stator (11) further comprises a plastic encapsulation body (119) and a winding, wherein the winding is wound around the stator teeth (114), and the plastic encapsulation body (119) covers an outer surface of a structure formed by the stator teeth (114), the yoke (113) and the winding.

8. The crossflow wind wheel assembly according to any one of claims 1 to 3 and 5 to 7, characterized in that: The crossflow impeller assembly further comprises a spacer sleeve (90), wherein the spacer sleeve (90) is sleeved on the outer peripheral side of the rotating shaft (21), and two ends of the spacer sleeve (90) respectively abut against the crossflow impeller (20) and the first bearing (50) so that the first gap (30) is provided between the stator (11) and the rotor (12).

9. The crossflow wind wheel assembly according to claim 8, characterized in that: The minimum width δ of the first gap (30) satisfies the relationship: 0.4 mm ≤ δ ≤ 1.0 mm.

10. The crossflow wind wheel assembly according to claim 8, characterized in that: The crossflow wind wheel assembly also includes a mounting base (60) and an adjustable bearing (70), the stator (11) and the adjustable bearing (70) are arranged on the mounting base (60) at intervals, and both ends of the crossflow wind wheel (20) are rotatably connected to the adjustable bearing (70) and the first bearing (50).

11. The crossflow wind wheel assembly according to any one of claims 1 to 3, 5 to 7 and 9 to 10, characterized in that: The crossflow wind wheel assembly also includes a dustproof structure, which is arranged between the axial flux motor (10) and the crossflow wind wheel (20) and surrounds the outer peripheral side of the first gap (30).

12. The crossflow wind wheel assembly according to claim 11, characterized in that: The dustproof structure comprises a first dustproof ring (22), the first dustproof ring (22) being arranged at one end of the crossflow impeller (20) close to the axial flux motor (10), the first dustproof ring (22) being arranged around the outer circumference of the rotor (12) and forming a second gap (40) between the first dustproof ring (22) and the outer circumference of the rotor (12); A second dustproof ring (112), wherein the second dustproof ring (112) is arranged at one end of the axial flux motor (10) close to the crossflow impeller (20), and the second dustproof ring (112) is arranged around the outer peripheral side of the first gap (30) and inserted into the second gap (40) along the axial direction of the axial flux motor (10).

13. An air conditioner, characterized in that: A crossflow wind wheel assembly comprising any one of claims 1 to 12.

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