CN218102789U - Rotor assembly, micro motor and micro respirator - Google Patents

Abstract

The embodiment of the utility model provides a rotor assembly and have micro motor and miniature breathing machine of this rotor assembly. Wherein, the utility model discloses a rotor combination spare of embodiment includes pivot and solid magnet steel, the shaft cavity has in the pivot, solid magnet steel inlays to be established in the shaft cavity. The utility model discloses miniature breathing machine includes housing, impeller subassembly, stator and rotor assembly. Each of the stator and the rotating shaft is arranged in the accommodating cavity, the stator is arranged on the outer side of the rotating shaft, a ventilation channel is formed between the housing and the stator, and the impeller assembly is arranged in the accommodating cavity. Therefore, the rotor assembly according to the utility model discloses an advantage that the rotor assembly has structural strength height, small, simple structure and be convenient for the assembly.

Description

Rotor assembly, micro motor and micro respirator

Technical Field

The utility model relates to the technical field of motors, concretely relates to rotor assembly and have micro motor and miniature breathing machine of this rotor assembly.

Background

The respirator can provide compressed air with certain pressure and flow to obtain mixed gas of oxygen concentration and required flow required during clinical treatment, and in order to reduce the portability of the equipment, the rotating speed of the motor needs to be increased to meet the flow rate of the gas. In the correlation technique, the rotor subassembly includes the hollow structure that magnet steel sheath and rotor punching formed, and there are the problem that overall structure intensity is low and assembly efficiency is low in the pivot sets up hollow structure.

Disclosure of Invention

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. To this end, an embodiment of the present invention provides a rotor assembly. The rotor assembly has the advantages of high structural strength, small volume, simple structure and convenience in assembly.

The embodiment of the utility model provides a micro motor is still provided.

The embodiment of the utility model also provides a miniature breathing machine.

The utility model discloses a rotor combination spare of embodiment includes pivot and solid magnet steel, the axle chamber has in the pivot, solid magnet steel inlays to be established in the axle chamber.

The utility model discloses miniature breathing machine includes housing, impeller subassembly, stator and rotor assembly.

Have the air inlet end that holds the chamber and set up relatively in the housing and the end of airing exhaust, rotor assembly includes pivot and solid magnet steel, the shaft cavity has in the pivot, solid magnet steel inlays to be established the shaft cavity, the stator with each in the pivot all sets up hold the intracavity, the stator is established the outside of pivot, the housing with form ventilation channel between the stator, impeller component sets up hold the intracavity, impeller component includes the rim plate, the rim plate with the pivot links to each other, impeller component is close to the air inlet end sets up, the stator with each in the pivot sets up the air inlet end with between the end of airing exhaust.

The utility model discloses miniature breathing machine through being divided into pivot and solid magnet steel with the rotor sub-assembly, wherein, solid magnet steel has the advantage of better overall structure intensity. Therefore, the requirements of high critical rotating speed and low rotor deflection of the rotor assembly are favorably met. Furthermore, on the premise of ensuring that the gas flow is not changed, the requirement of miniaturization of the miniature breathing machine can be met, and the portability of the miniature breathing machine is improved.

Furthermore, the utility model discloses miniature breathing machine is through setting up the axle chamber in the pivot to set up solid magnet steel in the axle chamber, regard as the protective sheath of solid magnet steel with the pivot, need not additionally add the protective sheath again, have the advantage of saving miniature breathing machine's inner space. Therefore, the volume of the miniature respirator is further reduced, and the miniature respirator is beneficial to realizing the miniaturization and the portability of the miniature respirator. Meanwhile, the miniature respirator also has the advantages of simple structure, simplified installation steps and improved assembly efficiency.

In addition, according to the micro-respirator provided by the embodiment of the invention, the air inlet end and the air outlet end are oppositely arranged, the impeller assembly is arranged at the air inlet end, and each of the stator and the rotor is arranged between the air inlet end and the air outlet end, so that the flow velocity of cold air in a ventilation channel can be improved, the heat dissipation efficiency of the micro-respirator is further improved, and the micro-respirator is favorably miniaturized.

Therefore, the utility model discloses miniature breathing machine has structural strength height, small, the radiating effect is good, simple structure and the advantage of the assembly of being convenient for.

In some embodiments, the shaft includes a first end shaft having a first shaft end and a second shaft end disposed opposite each other in an axial direction of the shaft, and a second end shaft having a third shaft end and a fourth shaft end disposed opposite each other in the axial direction of the shaft, the second shaft end and the third shaft end abutting each other, and the shaft cavity is formed on at least one of the first end shaft and the second end shaft.

In some embodiments, the shaft cavity is disposed on the second end shaft, one end of the shaft cavity located at the third shaft end is open and the shaft cavity extends along the axial direction of the rotating shaft, the solid magnetic steel has a first end and a second end disposed opposite to each other along the axial direction of the rotating shaft, the first end abuts against the second shaft end, and the second end is disposed in the shaft cavity.

In some embodiments, the shaft cavity includes a first section and a second section sequentially arranged in a direction from the third shaft end to the fourth shaft end, a cross-sectional area of the first section is larger than a cross-sectional area of the second section, a first limiting surface is defined at a junction of the first section and the second section, the solid magnetic steel is arranged in the first section, and the second end abuts against the first limiting surface.

In some embodiments, the first end shaft is provided with a hollow portion extending in an axial direction of the rotating shaft.

In some embodiments, the first end shaft includes a plurality of first shaft segments, the first shaft segments increasing in cross-sectional area in a direction from the first shaft end to the second shaft end, and a first step surface is formed between adjacent first shaft segments.

In some embodiments, the second end shaft includes a plurality of second shaft segments, the cross-sectional area of the plurality of second shaft segments decreases in a direction from the third shaft end to the fourth shaft end, and a second step surface is formed between adjacent second shaft segments.

In some embodiments, the microshower further comprises a fin disposed within the ventilation channel.

The rotor assembly of the embodiment of the present invention is the rotor assembly according to any of the above embodiments.

The utility model discloses micro motor includes housing, stator and rotor assembly, it holds the chamber to have in the housing, the rotor assembly is according to above-mentioned arbitrary rotor assembly, the stator with each in the pivot all sets up hold the intracavity, the stator is established the outside of pivot.

Drawings

Fig. 1 is a perspective view of a micro motor according to an embodiment of the present invention.

Fig. 2 is a front view of a micro motor according to an embodiment of the present invention.

Fig. 3 is a right side view of the micro motor according to the embodiment of the present invention.

Fig. 4 isbase:Sub>A cross-sectional view taken along linebase:Sub>A-base:Sub>A in fig. 2.

Fig. 5 is a perspective view of the micro-motor according to the embodiment of the present invention, with the cover omitted.

Fig. 6 is a sectional view of the micro-motor according to the embodiment of the present invention, with the cover omitted.

Fig. 7 is a perspective view of a rotor assembly according to an embodiment of the present invention.

Fig. 8 is a front view of a rotor assembly according to an embodiment of the present invention.

Fig. 9 is a cross-sectional view taken along line B-B in fig. 8.

Fig. 10 is a cross-sectional view taken along line C-C in fig. 8.

Reference numerals:

a rotor assembly 100; a micro-motor 1000;

a rotating shaft 1; a shaft cavity 11; a first section 111; a second section 112; a first limiting surface 113; a first end shaft 12; a first shaft end 121; a second axial end 122; a first step surface 123; a hollow portion 124; a second end shaft 13; a third shaft end 131; a fourth shaft end 132; a second step surface 133;

solid magnetic steel 2; a first end 21; a second end 22;

a housing 200; a housing chamber 201; an air inlet end 202; an exhaust end 203; a ventilation channel 204;

a stator 300;

an impeller assembly 400;

a fin 500;

flow deflector 600

The guide housing plate 700.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

A micro-ventilator according to an embodiment of the present invention will be described with reference to fig. 1 to 10.

The miniature ventilator of the embodiment of the present invention comprises a housing 200, an impeller assembly 400, a stator 300 and a rotor assembly 100.

The housing 200 is provided with an accommodating cavity 201, an air inlet end 202 and an air exhaust end 203 which are oppositely arranged, the rotor assembly 100 comprises a rotating shaft 1 and solid magnetic steel 2, the rotating shaft 1 is provided with an axial cavity 11, and the solid magnetic steel 2 is embedded in the axial cavity 11. Each of stator 300 and pivot 1 all sets up in holding chamber 201, and stator 300 establishes the outside at pivot 1, forms ventilation channel 204 between cover 200 and the stator 300, and impeller subassembly 400 sets up in holding chamber 201, and impeller subassembly 400 includes the rim plate, and the rim plate links to each other with pivot 1, and impeller subassembly 400 is close to the setting of air inlet end 202, and each setting in stator 300 and the pivot 1 is held 202 and is aired exhaust between 203 at air inlet end 202.

The utility model discloses miniature breathing machine through dividing rotor sub-assembly 100 into pivot 1 and solid magnet steel 2, and the solid magnet steel 2 of setting has the advantage of better overall structure intensity. Therefore, the solid magnetic steel 2 is beneficial to realizing the requirements of high critical rotating speed and low rotor deflection of the rotor assembly 100. Furthermore, on the premise of ensuring that the gas flow is not changed, the requirement of miniaturization of the miniature breathing machine can be met, and the portability of the miniature breathing machine is improved.

Furthermore, the utility model discloses miniature breathing machine is through setting up shaft cavity 11 in pivot 1 to set up solid magnet steel 2 in shaft cavity 11, regard as solid magnet steel 2's protective sheath with pivot 1, need not additionally add the protective sheath again, have the advantage of saving miniature breathing machine's inner space. Therefore, the volume of the miniature respirator is further reduced, and the miniature respirator is beneficial to realizing the performance of miniaturization and portability. Simultaneously, through the installation cooperation of pivot 1 and solid magnet steel 2, have simple structure, the installation step of simplification and promote the advantage of assembly efficiency.

In addition, in the micro-respirator according to the embodiment of the present invention, the air inlet end 202 and the air outlet end 203 are disposed opposite to each other, the impeller assembly 400 is disposed at the air inlet end 202, and each of the stator 300 and the rotor assembly 100 is disposed between the air inlet end 202 and the air outlet end 203, so that the flow rate of the cool air in the ventilation channel 204 can be increased. Further, the heat dissipation efficiency of the miniature respirator is improved, and therefore the miniature respirator is facilitated to be miniaturized.

Therefore, the utility model discloses miniature breathing machine has structural strength height, small, the radiating effect is good, simple structure and the advantage of the assembly of being convenient for.

Alternatively, the shaft cavity 11 is located near the middle of the rotating shaft 1.

As shown in fig. 6 and 9, the rotating shaft 1 includes a first end 21 shaft 12 (e.g., an end shaft on the left side as shown in fig. 9) and a second end 22 shaft 13 (e.g., an end shaft on the right side as shown in fig. 9), the first end 21 shaft 12 has a first shaft end 121 and a second shaft end 122 oppositely disposed in the axial direction of the rotating shaft 1, the second end 22 shaft 13 has a third shaft end 131 and a fourth shaft end 132 oppositely disposed in the axial direction of the rotating shaft 1, the second shaft end 122 and the third shaft end 131 abut, and a shaft cavity 11 is formed on at least one of the first end 21 shaft 12 and the second end 22 shaft 13. In other words, the first end 21 and the second end 22 are opposite to each other along the axial direction of the rotating shaft 1, and the shaft 12 and the shaft 13 are arranged. The cavity 11 may be formed on the first end 21, the shaft 12, or the cavity 11 may be formed on the second end 22, the shaft 13, or the second shaft end 122 and the third shaft end 131 may abut, and the cavity 11 may be formed on the first end 21, the shaft 12, or the second end 22.

The utility model discloses miniature breathing machine through being divided into 21 axles 12 of first end and 22 axles 13 of second end with pivot 1, has the advantage that reduces the solid magnet steel 2 assembly degree of difficulty. Therefore, the rotor assembly 100 of the miniature respirator has the advantage of improving the assembling efficiency.

For example, as shown in fig. 6 and 9, the shaft cavity 11 is disposed on the shaft 13 at the second end 22, one end of the shaft cavity 11 located at the third shaft end 131 is open, the shaft cavity 11 extends along the axial direction of the rotating shaft 1, the solid magnetic steel 2 has a first end 21 and a second end 22 oppositely disposed along the axial direction of the rotating shaft 1, the first end 21 abuts against the second shaft end 122, and the second end 22 is disposed in the shaft cavity 11.

The utility model discloses miniature breathing machine through with lumen 11 sets up on second end 22 axle 13, only needs the cross-sectional area with solid magnet steel 2 and the epaxial 11 phase-matchs of lumen of second end 22 axle 13 just can realize the assembly. Therefore, the assembly difficulty of the rotor assembly 100 in the micro-respirator is further reduced, and the assembly efficiency of the micro-respirator is improved.

As shown in fig. 6 and 9, the shaft cavity 11 includes a first section 111 and a second section 112 sequentially arranged from the third shaft end 131 to the fourth shaft end 132, the cross-sectional area of the first section 111 is larger than that of the second section 112, a first limiting surface 113 is defined at the junction of the first section 111 and the second section 112, the solid magnetic steel 2 is arranged in the first section 111, and the second end 22 abuts against the first limiting surface 113. It will be appreciated that the second section 112 is essentially a hollow portion provided on the shaft 1.

The utility model discloses miniature breathing machine divide into first section 111 and second section 112 through shaft cavity 11, and the cross-sectional area of first section 111 is greater than the cross-sectional area of second section 112, and first section 111 is injectd first spacing face 113 with second section 112 in the juncture, and solid magnet steel 2 sets up in first section 111, and second end 22 and the 113 butts of first spacing face, first end 21 and second shaft end 122 butt. With solid magnet steel 2's both ends respectively with first spacing face 113 butt and second axle end 122 butt, and then avoided solid magnet steel 2 along the axial skew of pivot 1. Therefore, the stability of the structure of the rotor assembly 100 is improved. Furthermore, by providing the second section 112, the overall weight of the shaft 13 at the second end 22 can be reduced. Thereby, there is an advantage of improving the lightness of the rotor assembly 100.

As shown in fig. 6 and 9, the shaft 12 of the first end 21 is provided with a hollow portion 124, and the hollow portion 124 extends along the axial direction of the rotating shaft 1.

The utility model discloses miniature breathing machine through be equipped with hollow portion 124 on 21 axles 12 of first end, has the effect that reduces the whole weight of 21 axles 12 of first end. Thereby, there is an advantage of improving the lightness of the rotor assembly 100.

Optionally, the hollow portion 124 is open at the second axial end 122. This has the advantage of reducing the difficulty of processing the hollow portion 124.

As shown in fig. 6 and 9, the shaft 12 at the first end 21 includes a plurality of first shaft segments, the cross-sectional area of the plurality of first shaft segments increases from the first shaft end 121 to the second shaft end 122, and a first step surface 123 is formed between adjacent first shaft segments. For example, as shown in FIG. 9, the cross-sectional area of the first plurality of shaft segments increases in a left-to-right direction.

The utility model discloses miniature breathing machine through the cross-sectional area with a plurality of first shaft sections by the direction increase of first axle head 121 to second axle head 122, and form first step face 123 between the adjacent first shaft section, makes things convenient for mutually supporting between rotor assembly 100 and other spare parts, can fix a position rather than matched with spare part. Therefore, the miniature respirator has the advantage of improving the stability of the whole structure of the miniature respirator.

For example, as shown in fig. 4 and 6, the micro-ventilator of the present invention further includes an end cap and a first air bearing. First end 21 axle 12 includes four first shaft segments, and first end 21 axle 12 is first minute shaft segment, second minute shaft segment, third minute shaft segment and fourth minute shaft segment in proper order by the direction of first axle head 121 to second axle head 122, and first minute shaft segment can cooperate by the end cover, and the second minute shaft segment cooperatees with first air-bearing, and fourth minute shaft segment and solid magnet steel 2 butt.

As shown in fig. 6 and 9, the second end 22 and the shaft 13 include a plurality of second shaft segments, the cross-sectional areas of which decrease from the third shaft end 131 to the fourth shaft end 132, and a second step surface 133 is formed between the adjacent second shaft segments.

The utility model discloses miniature breathing machine, the cross-sectional area through with a plurality of second axle sections is reduced by the direction of first axle head 121 to second axle end 122, and forms second step face 133 between the adjacent second axle section, makes things convenient for this rotor assembly 100 and other spare part cooperations, can fix a position rather than matched with spare part. Therefore, the micro-breathing machine has the advantage of improving the stability of the whole structure of the micro-breathing machine.

The utility model discloses miniature breathing machine still includes fin 500, and fin 500 sets up in ventilation channel 204.

According to the micro-respirator provided by the embodiment of the invention, the fins 500 are arranged in the ventilation channel 204, so that the heat transfer area can be increased, the cooling speed in the ventilation channel 204 is increased, the heat dissipation efficiency of the air cooling motor is further improved, and the micro-respirator can be ensured to be suitable for high-speed operation. In addition, adopt miniature breathing machine to cool down can reduce the volume of motor and the advantage of weight, promoted the portability that has this miniature breathing machine.

Alternatively, a plurality of fins 500 are provided at intervals in the circumferential direction of the stator 300. Thereby contributing to the stability of the rotation of the impeller assembly 400.

As shown in fig. 5 and 6, the microshozor according to the embodiment of the present invention further includes a plurality of guide vanes 600 and a guide housing plate 700, the guide housing plate 700 being disposed between the impeller assembly 400 and the stator 300, the guide vanes 600 being disposed on the guide housing plate 700 at intervals in a circumferential direction of the guide housing plate.

As shown in fig. 5 and 6, one end of the fin 500 close to the guide vane 600 is an air inlet end of the fin 500, one end of the fin 500 far from the guide vane 600 is an air outlet end of the fin 500, one end of the guide vane 600 close to the impeller assembly 400 is a front end of the guide vane 600 (e.g., a right end of the guide vane 600 in fig. 5), one end of the guide vane 600 far from the impeller assembly 400 is a rear end of the guide vane 600 (e.g., a left end of the guide vane 600 in fig. 5), and the rear end of the guide vane 600 is disposed between air inlet ends of two adjacent fins 500 in the circumferential direction of the cowl panel 700.

According to the micro-respirator provided by the embodiment of the invention, the rear ends of the flow deflectors are arranged between the air inlet ends of the two adjacent fins 500 in the circumferential direction of the guide cover plate 700, so that cold air entering between the two adjacent flow deflectors 600 can be smoothly guided between the two adjacent fins 500, the smoothness of cold air flowing is improved, and the flow rate of the cold air in the ventilation channel 204 is increased. Therefore, the heat dissipation efficiency of the miniature respirator is further improved.

As shown in fig. 7 to fig. 10, the embodiment of the present invention provides a rotor assembly 100, and the rotor assembly 100 is the rotor assembly 100 according to any one of the above embodiments, and the solid magnetic steel 2 is provided to have a better overall structure strength through the solid magnetic steel 2. Therefore, the volume of the rotor assembly 100 is further reduced, which is beneficial to realizing the miniaturization and the lightness of the rotor assembly 100. Meanwhile, the rotor assembly 100 also has the advantages of simple structure, simplified installation steps and improved assembly efficiency.

As shown in fig. 1 to 10, a micro motor 1000 according to an embodiment of the present invention includes a housing 200, a stator 300, and a rotor assembly 100. The housing 200 has a receiving cavity 201 therein, the rotor assembly 100 is the rotor assembly 100 according to any one of the above, each of the stator 300 and the rotating shaft 1 is disposed in the receiving cavity 201, and the stator 300 is disposed outside the rotating shaft 1.

The micro-motor 1000 of the embodiment of the present invention includes the rotor assembly 100 according to any one of the above. Therefore, the utility model discloses micro motor 1000 has the advantage of saving installation space, promoting structural strength height and assembly efficiency.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do 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, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although the above embodiments have been shown and described, it should be understood that they are exemplary and should not be construed as limiting the present invention, and that many changes, modifications, substitutions and alterations to the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A rotor assembly, comprising:

the rotating shaft is internally provided with a shaft cavity;

and the solid magnetic steel is embedded in the shaft cavity.

2. A rotor assembly according to claim 1, wherein the shaft includes first and second end shafts, the first end shaft having first and second axially oppositely disposed shaft ends in the axial direction of the shaft, the second end shaft having third and fourth axially oppositely disposed shaft ends in the axial direction of the shaft, the second and third shaft ends abutting, the shaft cavity being formed on at least one of the first and second end shafts.

3. A rotor assembly according to claim 2, wherein the shaft cavity is provided in the second end shaft, the shaft cavity being open at one end at the third shaft end and extending axially along the shaft, the solid magnetic steel having first and second ends oppositely disposed axially along the shaft, the first end abutting the second shaft end, the second end being provided in the shaft cavity.

4. The rotor assembly of claim 3, wherein the shaft cavity includes a first section and a second section sequentially arranged from the third shaft end to the fourth shaft end, a cross-sectional area of the first section is larger than a cross-sectional area of the second section, a first limiting surface is defined at a junction of the first section and the second section, the solid magnetic steel is arranged in the first section, and the second end abuts against the first limiting surface.

5. A rotor assembly according to claim 2, wherein the first end shaft is provided with a hollow portion extending in an axial direction of the rotary shaft.

6. A rotor assembly according to any one of claims 2 to 5, wherein the first end shaft comprises a plurality of first shaft segments, the plurality of first shaft segments increasing in cross-sectional area in a direction from the first shaft end to the second shaft end, a first step face being formed between adjacent first shaft segments.

7. A rotor assembly according to any one of claims 2 to 5, wherein the second end shaft comprises a plurality of second shaft segments, the second shaft segments decreasing in cross-sectional area in a direction from the third shaft end to the fourth shaft end, a second step face being formed between adjacent second shaft segments.

8. A micro-motor, comprising:

the housing is internally provided with a containing cavity;

a stator and rotor assembly, the rotor assembly being in accordance with any one of claims 1 to 7, each of the stator and the shaft being disposed within the receiving cavity, the stator being disposed outside the shaft.

9. A miniature ventilator, comprising:

the air inlet end and the air outlet end are oppositely arranged;

a stator and rotor assembly, the rotor assembly being in accordance with any one of claims 1 to 7, each of the stator and the shaft being disposed within the receiving cavity, the stator being disposed outside the shaft, the casing and the stator forming a ventilation channel therebetween;

the impeller subassembly, the impeller subassembly sets up hold the intracavity, the impeller subassembly includes the rim plate, the rim plate with the pivot links to each other, the impeller subassembly is close to the air inlet end sets up, the stator with each setting in the pivot is in the air inlet end with between the end of airing exhaust.

10. The microshower of claim 9, further comprising fins disposed within the ventilation channel.

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