CN112855578A - Casing subassembly, electric fan and dust catcher - Google Patents

Abstract

The invention provides a machine shell assembly, an electric fan and a dust collector. The housing assembly includes: a housing; the fixed impeller is connected with the shell and is arranged concentrically with the shell; the bearing support piece is connected with the end face of the fixed impeller and protrudes towards the inner side of the shell, and a bearing chamber is defined by the bearing support piece; and the reinforcing rib is connected with the peripheral surface of the bearing support part and the end surface of the fixed impeller. According to the shell assembly provided by the invention, the reinforcing ribs are additionally arranged between the bearing supporting piece and the fixed impeller and are connected with the bearing supporting piece and the fixed impeller through the reinforcing ribs, so that the supporting rigidity of the bearing supporting piece can be effectively improved, the vibration of the whole shell assembly is reduced, the vibration of the electric fan is reduced, the improvement of user experience is facilitated, and the service life of the electric fan and the service life of the whole dust collector are prolonged.

Description

Casing subassembly, electric fan and dust catcher

Technical Field

The invention relates to the technical field of dust collectors, in particular to a machine shell assembly, an electric fan comprising the machine shell assembly and a dust collector comprising the electric fan.

Background

At present, the working rotating speed of an electric fan for a dust collector is generally more than forty thousand turns, and for a part of high-power machine types, the rotating speed can even reach hundreds of thousands of turns. The vibration problem is particularly obvious under the working condition of high rotating speed. In the whole dust collector, the user experience can be seriously influenced by the overlarge vibration of the electric fan, and meanwhile, the service life of the whole dust collector and the service life of the electric fan are seriously weakened.

Disclosure of Invention

In order to solve at least one of the above technical problems, an object of the present invention is to provide a housing assembly.

Another object of the present invention is to provide an electric blower including the above-mentioned casing assembly.

It is a further object of the present invention to provide a vacuum cleaner including the above electric blower.

In order to achieve the above object, an aspect of the first aspect of the present invention provides a housing assembly, including: a housing; the fixed impeller is connected with the shell and is arranged concentrically with the shell; the bearing support piece is connected with the end face of the fixed impeller and protrudes towards the inner side of the shell, and a bearing chamber is defined by the bearing support piece; and the reinforcing rib is connected with the peripheral surface of the bearing support piece and the end surface of the fixed impeller.

According to the casing assembly provided by the technical scheme of the first aspect of the invention, the reinforcing ribs are additionally arranged between the bearing support piece and the fixed impeller, and the bearing support piece and the fixed impeller are connected through the reinforcing ribs, so that the support rigidity of the bearing support piece can be effectively improved, the vibration of the whole casing assembly is reduced, the vibration of the electric fan is reduced, the improvement of user experience is facilitated, and the service life of the electric fan and the service life of the whole dust collector are prolonged.

Specifically, the casing assembly includes a casing, a stationary vane, and a bearing support. The housing is generally cylindrical and is used to house the stator, rotor, etc. The fixed impeller is connected with the casing and is arranged concentrically with the casing for guiding airflow to flow. The bearing support piece is connected with the end face of the fixed impeller and protrudes inwards the casing, a bearing chamber is defined by the bearing support piece, and the bearing chamber is used for accommodating a bearing. Because bearing support piece is the biggest part of whole casing subassembly atress, the risk that takes place the vibration is the highest, therefore this scheme connects bearing support piece's outer peripheral face and the terminal surface of deciding the impeller through the strengthening rib for bearing support piece and deciding the impeller and be linked as an organic whole, support each other, this is showing and is improving bearing support piece's support rigidity, can show the probability that reduces bearing support piece and take place the vibration, thereby reduces electric fan and dust catcher complete machine vibration, plays good damping effect.

In addition, the casing assembly in the above technical solution provided by the present invention may further have the following additional technical features:

in the above technical solution, an axial end of the surface of the reinforcing rib connected to the bearing support member facing the fixed impeller is denoted as a first end, and an axial end facing away from the fixed impeller is denoted as a second end; the first end of the reinforcing rib extends to be connected with the end face of the fixed impeller along the axial direction of the casing, or a gap is formed between the first end of the reinforcing rib and the end face of the fixed impeller; and/or the second end of strengthening rib is followed the axial extension of casing extend to with bearing support spare deviates from the terminal surface of deciding the impeller flushes, perhaps the second end of strengthening rib with bearing support spare deviates from the terminal surface staggered arrangement of deciding the impeller.

The axial both ends on bearing support piece's surface are connected to the strengthening rib are first end and second end respectively, and first end is nearer with fixed impeller, and the second end is far away with fixed impeller. The first end is connected with the end face of the fixed impeller, so that the contact area between the reinforcing rib and the fixed impeller is increased, the connection strength is improved, the support rigidity of the bearing support piece is improved, and the stability of the fixed impeller is improved. Alternatively, a gap can be formed between the first end and the end face of the fixed impeller, which is beneficial to reducing the size of the reinforcing rib, further reducing the use amount of raw materials and reducing the weight of the machine shell assembly.

The second end flushes with the terminal surface that bearing support spare deviates from deciding the impeller, that is to say the terminal surface that bearing support spare was connected to the strengthening rib extends to bearing support spare's terminal surface, and this is favorable to increasing strengthening rib and bearing support spare's area of contact, and then improves joint strength, improves bearing support spare's support rigidity, improves the stability of deciding the impeller. Alternatively, the second end and the end surface of the bearing support member may be staggered, for example, the second end protrudes from the end surface of the bearing support member in the axial direction, or the end surface of the bearing support member protrudes from the reinforcing rib in the axial direction.

In the above technical solution, the end face of the casing connected to the fixed impeller by the reinforcing rib is directed to the end face of the reinforcing rib away from the fixed impeller along the axial direction of the casing, and the sectional area of the reinforcing rib gradually decreases; and/or the end face of the bearing support part is connected with the end face of the bearing support part by the reinforcing rib along the radial direction of the machine shell, and the sectional area of the reinforcing rib is gradually reduced towards the end face of the reinforcing rib deviating from the bearing support part.

The reinforcing ribs are connected with the end face of the fixed impeller and face away from the end face of the fixed impeller to the reinforcing ribs, and the sectional areas of the reinforcing ribs are gradually reduced, so that the reinforcing ribs are formed into triangular reinforcing ribs or trapezoidal reinforcing ribs or similar structures, the reinforcing ribs in the shape are not easy to deform, and the strength is high; and along the axial of casing, the terminal surface of the one end of fixed impeller is connected to the strengthening rib is great, is favorable to improving the joint strength of strengthening rib and fixed impeller, and then improves the supporting effect of fixed impeller to bearing support piece, is favorable to further improving bearing support piece's rigidity.

The end face of the bearing support part is connected with the end face of the reinforcing rib, which deviates from the bearing support part, and the sectional area of the reinforcing rib is gradually reduced, so that the reinforcing rib is formed into a triangular reinforcing rib or a trapezoidal reinforcing rib or a similar structure, and the reinforcing rib in the shape is not easy to deform and has higher strength; and from inside to outside along the radial of casing, the terminal surface of the one end that bearing support piece was connected to the strengthening rib is great, is favorable to improving the joint strength of strengthening rib and bearing support piece, and then is favorable to further improving bearing support piece's rigidity.

In any of the above technical solutions, the reinforcing rib is a triangular reinforcing rib; or the reinforcing ribs are trapezoidal reinforcing ribs.

Because bearing support piece links to each other with the terminal surface of deciding the impeller, then form the corner between bearing support piece's the outer peripheral face and the terminal surface of deciding the impeller, comparatively suitably adopt triangle strengthening rib or trapezoidal strengthening rib to connect, existing area of contact who is favorable to increasing strengthening rib and bearing support piece's outer peripheral face and the terminal surface of deciding the impeller to improve joint strength, and strengthening rib itself is difficult for taking place to warp, joint strength is higher, therefore be favorable to improving the mutual support effect of bearing support piece and deciding the impeller, further improve bearing support piece's support rigidity, further weaken the vibration of casing subassembly.

In any one of the above technical solutions, the number of the reinforcing ribs is plural, and the plural reinforcing ribs are distributed at intervals along the circumferential direction of the bearing support member.

The quantity of strengthening rib is a plurality of, and a plurality of strengthening ribs have played many positions to bearing support piece along bearing support piece's circumference interval distribution, can show the joint strength who improves bearing support piece and decide the impeller and the effect of supporting each other to further improve bearing support piece's rigidity, further weaken casing assembly's vibration. Further, the plurality of reinforcing ribs are uniformly distributed along the circumferential direction of the bearing support.

In any of the above technical solutions, the housing includes: a housing; and the supporting columns are arranged on the inner wall surface of the shell and are arranged at intervals along the circumferential direction of the shell, and at least one part of the supporting columns extends to the end surface of the fixed impeller along the axial direction of the shell to be connected with the end surface of the fixed impeller.

The casing includes casing and a plurality of support column, and a plurality of support columns have played the reinforcing effect to the casing, have improved the intensity and the rigidity of casing, are favorable to further weakening casing subassembly's vibration. Wherein, a plurality of support columns set up along the circumference interval of casing, have played many parts to the casing and have supported, have also played many parts to deciding the impeller and have connected, therefore be favorable to further improving the rigidity of casing, also be favorable to further improving the joint strength of casing and deciding the impeller, also be favorable to improving the stability of deciding the impeller. Further, at least one part of the support columns extends to the end face of the fixed impeller along the axial direction of the casing to be connected with the end face of the fixed impeller, and the casing can be directly connected with the fixed impeller, so that the casing and the fixed impeller can be mutually supported, the support rigidity of the casing assembly is further improved, and the stability of the fixed impeller is further improved. Compared with the mode that all the support columns are consistent in structure, a part of the support columns are connected with the end face of the fixed impeller, the size of the part of the support columns can be reduced, the weight of a product is reduced, and consumption of raw materials is reduced.

In the above technical scheme, the support column and the reinforcing rib are staggered and arranged, and an avoidance space is arranged between the reinforcing rib and the support column.

In the scheme, the supporting columns and the reinforcing ribs are staggered and are not connected. The form that does not connect makes the flow behind the air current flow fixed impeller more smooth and easy, and is unimpeded to improve fluidic flow efficiency, improve electric fan's work efficiency. The staggered arrangement form is favorable for further enlarging the space between the supporting columns and the reinforcing ribs, so that the air flow efficiency is further improved, and the working efficiency of the electric fan is further improved.

In the technical scheme, the number of the supporting columns is equal to that of the reinforcing ribs; or the number of the supporting columns is not equal to that of the reinforcing ribs.

The quantity of support column equals with the quantity of strengthening rib, and the structure is comparatively regular, and the machine shaping of being convenient for also is favorable to the casing subassembly atress balanced, and is more stable. Of course, the number of the supporting columns and the number of the reinforcing ribs may not be equal.

In the above technical solution, two ends of the supporting column along the axial direction of the casing are respectively marked as a third end and a fourth end, and an axial distance between the third end and the fixed impeller is smaller than an axial distance between the fourth end and the fixed impeller; a positioning step is arranged at the fourth end of one part of the support columns, the positioning step comprises a first step surface and a second step surface, the second step surface is connected with the first step surface in a turning mode, the second step surface is provided with a connecting hole, and the connecting hole extends along the axial direction of the shell; and the fourth end of the rest part of the support columns is provided with an inclined plane, and the inclined plane obliquely extends towards the direction close to the third end of the support column and the central axis of the shell.

The fourth end of some in a plurality of support columns is equipped with the location step, can fix a position stator core, is favorable to stator core's assembly. Specifically, the first step surface of the positioning step can abut against the outer peripheral surface of the stator core to play a positioning role, and the second step surface can abut against the axial end surface of the stator core to play a positioning role. And the second step surface is provided with a connecting hole extending along the axial direction of the shell, so that the stator core is fixed by utilizing fasteners such as screws and the like, and the stator core and the shell are assembled and fixed.

And the rest support columns are provided with inclined planes at the fourth ends, and the inclined planes extend obliquely towards the direction close to the third ends of the support columns and the central axis of the case, so that the support columns form a structure similar to a triangular reinforcing rib or a trapezoidal reinforcing rib, and the rigidity and the strength of the case are improved.

In the above technical solution, the outer diameter of the fixed impeller is smaller than the inner diameter of the casing, the casing assembly includes a fan housing, and the fan housing is sleeved outside the fixed impeller and connected to the casing; an avoiding step is arranged at the radial outer end of the supporting column connected with the fixed impeller, and the avoiding step comprises a third step surface and a fourth step surface; the third step surface extends to be flush with the peripheral surface of the wheel body of the fixed impeller along the axial direction of the casing, and a flow guide channel is formed between the third step surface and the fan cover; the fourth step surface is connected with the third step surface in a turning manner, and the fourth step surface is connected with the inner wall surface of the shell.

After the electric fan is assembled, the casing is connected with the fan cover, the fan cover is sleeved on the outer side of the fixed impeller, airflow is sucked from the opening of the fan cover, flows to the fixed impeller through the movable impeller, flows to the inner wall surface of the fan cover along the guide vanes of the fixed impeller, and further flows along the inner wall surface of the casing. Therefore, the outer diameter of the fixed impeller is smaller than the inner diameter of the casing, so that the airflow output by the fixed impeller can smoothly flow to the inner wall surface of the casing, the airflow loss is reduced, and the radial size of the casing assembly is reduced. Furthermore, for the supporting column directly connected with the end face of the fixed impeller, an avoiding step is arranged at the radial outer end of the supporting column, and because the third step face of the avoiding step is flush with the outer peripheral face of the wheel body of the fixed impeller, gaps are ensured between the supporting column and the inner wall face of the fan cover and between the supporting column and the inner wall face of the shell to form a flow guide channel, so that airflow output by the fixed impeller is not blocked, the smoothness of an air channel is ensured, the reduction of airflow loss is facilitated, and the working efficiency of the electric fan is improved. And the fourth step surface of the avoiding step is connected with the inner wall surface of the shell, so that the reliable connection of the support column and the shell is ensured.

In any of the above technical solutions, the fixed impeller includes an impeller body and a plurality of guide vanes provided on the impeller body, and the impeller body is connected to the casing; the guide vanes are arranged on the end surface of the wheel body, which is far away from the bearing supporting part, and are distributed at intervals along the circumferential direction of the wheel body to form radial guide vanes, and radial overflowing channels are defined by the radial guide vanes and a fan cover of the casing assembly; or a plurality of guide vanes are arranged on the outer peripheral surface of the wheel body and are distributed at intervals along the circumferential direction of the wheel body to form axial guide vanes, and an axial overflowing channel is defined by the axial guide vanes and the fan cover of the casing component.

The stator wheel comprises a wheel body and a plurality of guide vanes. The wheel body is generally cylindrical or disc-shaped, is concentrically arranged with the casing and is connected with the casing, so that the function of connecting the fixed impeller and the casing is realized.

The plurality of guide vanes can be arranged on the end surface of the wheel body deviating from the bearing supporting part and are distributed in an annular array along the circumferential direction of the wheel body, so that radial guide vanes are formed, a gap between the radial inner ends of the radial guide vanes forms an air inlet, and a gap between the radial outer ends forms an air outlet, so that air flows out of the fixed vane wheel along the radial direction to the inner wall surface of the fan cover and then flows to the shell along the fan cover, namely reaches the inner wall surface of the fan cover along the radial overflowing channel and then flows to the shell. The radial guide vane of the scheme has a rectification effect on fluid, is favorable for reducing fluid loss, improves the working efficiency of the electric fan and is also favorable for reducing the radial size of the electric fan.

Or a plurality of guide vanes can also be arranged on the peripheral surface of the wheel body and are distributed in an annular array along the circumferential direction of the wheel body, so that axial guide vanes are formed, a gap between the axial ends of the axial guide vanes forms an air inlet, and a gap between the axial outer ends forms an air outlet, so that the airflow flows out of the fixed vane wheel along the axial direction to reach the inner wall surface of the fan cover and then flows to the casing along the fan cover, namely reaches the inner wall surface of the fan cover along the axial overflowing channel and then flows to the casing. The axial guide vane of the scheme has a rectification effect on the fluid and is beneficial to shortening the axial size of the electric fan.

In the above technical solution, an overflow gap is provided between the radial outer end of the radial guide vane of the fixed impeller and the fan housing; and/or the radial outer end of the axial guide vane of the fixed impeller is in contact with the fan cover.

Because the air current needs to take place the wide-angle and turn to after radial guide vane flows out, then flow direction casing, therefore set up between radial outer end and the fan housing of radial guide vane and overflow the clearance, can play certain cushioning effect to the air current, the air current of being convenient for turns to, is favorable to reducing the air loss, improves electric fan's work efficiency.

Because the air current does not need to take place the wide-angle and turn to after axial guide vane flows out, can direct flow to the casing, therefore make axial guide vane's radial outer end and fan housing contact, can prevent that the rectification effect from being weakened, also be favorable to reducing the loss of air current, improve electric fan's work efficiency.

In any of the above technical solutions, the casing, the fixed impeller, and the bearing support are integrally formed into an integral structure.

Casing, stator vane wheel and bearing support piece are integrated into one piece's integral type structure, and existing joint strength who does benefit to between the improvement three has saved the assembly process between the three again, has reduced the assembly error of stator vane wheel and casing simultaneously, and then has reduced the performance fluctuation of product, has reduced the rejection rate of product.

The technical solution of the second aspect of the present invention provides an electric fan, comprising: the enclosure assembly of any of the aspects of the first aspect; the movable impeller is matched with the fixed impeller of the casing component.

The electric fan provided by the technical scheme of the second aspect of the present invention includes the casing assembly according to any one of the technical schemes of the first aspect, so that all the advantages of any one of the technical schemes are provided, and no further description is provided herein.

The invention provides a vacuum cleaner in a third aspect, comprising: the electric fan according to the technical scheme of the second aspect; the electric fan is arranged in the dust collector main body.

The vacuum cleaner provided by the technical scheme of the third aspect of the invention comprises the electric fan in the technical scheme of the second aspect, so that all the beneficial effects of any one technical scheme are achieved, and the details are not repeated.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a perspective view of a housing assembly according to some embodiments of the present invention;

FIG. 2 is a schematic perspective view of the housing assembly of FIG. 1 from another perspective;

FIG. 3 is a front view of the housing assembly of FIG. 1;

FIG. 4 is a schematic perspective view of a housing assembly according to some embodiments of the invention;

FIG. 5 is a cross-sectional structural schematic of a housing assembly according to some embodiments of the invention;

FIG. 6 is a cross-sectional structural schematic of a housing assembly according to some embodiments of the invention;

FIG. 7 is a schematic illustration of a portion of an electric fan according to some embodiments of the present invention;

figure 8 is a schematic block diagram of a vacuum cleaner according to some embodiments of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 8 is:

the vacuum cleaner comprises a machine shell 1, an avoiding space 11, a shell 12, a fixed impeller 2, a wheel body 21, a 211 end surface, a guide vane 22, a bearing support 3, a peripheral surface 31, a bearing chamber 32, a reinforcing rib 4, a first end 41, a second end 42, a support pillar 5, a positioning step 51, a connecting hole 511, a first step surface 512, a second step surface 513, an inclined surface 52, an avoiding step 53, a third step surface 531, a fourth step surface 532, a third end 54, a fourth end 55, a fourth end 6, a fan housing 61, a radial overflowing channel 61, an axial overflowing channel 62, a diversion channel 63, a fan 100, a movable impeller 102, a vacuum cleaner 200 and a vacuum cleaner main body 202.

Wherein the unidirectional arrows in fig. 5 and 6 indicate the direction of the air flow.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The cabinet assembly, the electric fan and the vacuum cleaner according to some embodiments of the present invention will be described with reference to fig. 1 to 8.

Example one

A chassis assembly, comprising: a casing 1, a stator vane 2, a bearing support 3 and a reinforcing rib 4, as shown in fig. 1 and 4.

Specifically, the stator impeller 2 is connected to the casing 1 and is disposed concentrically with the casing 1, as shown in fig. 1, 3 and 4.

The bearing support 3 is connected to the end surface 211 of the fixed impeller 2 as shown in fig. 2 and protrudes toward the inside of the casing 1, and the bearing support 3 encloses the bearing chamber 32 as shown in fig. 2.

The ribs 4 connect the outer peripheral surface 31 of the bearing support 3 and the end surface 211 of the stationary impeller 2, as shown in fig. 2.

The casing subassembly that this embodiment provided has add strengthening rib 4 between bearing support piece 3 and decide impeller 2, connects bearing support piece 3 and decide impeller 2 through strengthening rib 4, can effectively improve bearing support piece 3's support rigidity, makes whole casing subassembly's vibration reduce to reduce electric fan 100 vibration, both be favorable to improving user experience, be favorable to prolonging electric fan 100 again and the life of the whole machine of dust catcher 200.

Specifically, the casing assembly includes a casing 1, a stationary impeller 2, a bearing support 3, and a reinforcing rib 4. The housing 1 is generally cylindrical and is configured to accommodate a stator, a rotor, and the like. The fixed impeller 2 is connected with the casing 1 and is arranged concentrically with the casing 1 for guiding the air flow. The bearing support 3 is connected with the end surface 211 of the fixed impeller 2 and protrudes into the casing 1, and the bearing support 3 encloses a bearing chamber 32, and the bearing chamber 32 is used for accommodating a bearing.

Because bearing support piece 3 is the biggest part of whole casing subassembly atress, the risk that takes place the vibration is the highest, therefore this scheme connects bearing support piece 3's peripheral face 31 and the terminal surface 211 of fixed impeller 2 through strengthening rib 4 for bearing support piece 3 is even as an organic whole with fixed impeller 2, support each other, this is showing the support rigidity that has improved bearing support piece 3, can show the probability that reduces bearing support piece 3 and take place the vibration, thereby reduce electric fan 100 and dust catcher 200 complete machine vibration, play good damping effect.

Further, the axial end of the surface of the reinforcing rib 4 connecting the bearing support 3 toward the stationary impeller 2 is denoted as a first end 41, and the axial end away from the stationary impeller 2 is denoted as a second end 42. In other words, both ends of the surface of the reinforcing rib 4 connecting the bearing support 3 in the axial direction of the casing 1 are respectively referred to as a first end 41 and a second end 42, as shown in fig. 2. The axial distance between the first end 41 and the fixed impeller 2 is smaller than the axial distance between the second end 42 and the fixed impeller 2.

That is, the two axial ends of the surface of the bearing support 3 to which the reinforcing ribs 4 are connected are a first end 41 and a second end 42, respectively, the first end 41 being closer to the fixed impeller 2, and the second end 42 being farther from the fixed impeller 2.

Wherein, the first end 41 of the reinforcing rib 4 extends along the axial direction of the machine shell 1 to be connected with the end surface 211 of the fixed impeller 2, as shown in fig. 2. This is favorable to increasing the area of contact of strengthening rib 4 and fixed impeller 2, and then improves joint strength, improves the support rigidity of bearing support piece 3, improves the stability of fixed impeller 2.

Alternatively, the first end 41 of the rib 4 may have a gap with the end surface 211 of the stator wheel 2. This is advantageous in reducing the size of the reinforcing ribs 4, which in turn reduces the amount of raw material used, and since the weight of the cabinet 1 assembly is reduced.

Further, the second end 42 of the reinforcing rib 4 extends in the axial direction of the casing 1 to be flush with the end surface of the bearing support 3 facing away from the stationary impeller 2, as shown in fig. 2. That is to say, the surface that bearing support piece 3 is connected to strengthening rib 4 extends to bearing support piece 3's terminal surface along the axial, and this is favorable to increasing strengthening rib 4 and bearing support piece 3's area of contact, and then improves joint strength, improves bearing support piece 3's support rigidity, improves the stability of deciding impeller 2, and the structure is comparatively regular, the machine-shaping of being convenient for.

Alternatively, the second ends 42 of the ribs 4 can also be offset from the end face of the bearing support 3 facing away from the stationary impeller 2. Such as: the second end 42 protrudes from the end face of the bearing support 3 along the axial direction, so as to further improve the strength of the reinforcing rib 4; or the end surface of the bearing support 3 protrudes out of the reinforcing rib 4 along the axial direction, so that the size of the reinforcing rib 4 is reduced, and the production cost is reduced. Can be adjusted according to requirements in the actual production process.

In other words, the surface of the reinforcing rib 4 connected to the bearing support 3 extends from one axial end of the bearing support 3 to the other axial end of the bearing support 3, as shown in fig. 2.

That is, the axial dimension of the reinforcing rib 4 is consistent with the axial dimension of the bearing support 3, which significantly increases the axial contact area between the reinforcing rib 4 and the bearing support 3, and is beneficial to further improving the reinforcing effect on the bearing support 3, thereby further improving the rigidity of the bearing support 3 and further weakening the vibration of the housing assembly.

Of course, the axial length of the reinforcing ribs 4 may also be less than the axial strength of the bearing support 3. The first end 41 of the stiffener 4 may not be flush with the axial end of the bearing support 3, for example, the stiffener 4 is disposed obliquely, and both ends are connected to the end surfaces 211 of the bearing support 3 and the fixed impeller 2, respectively. The second end 42 of the reinforcing rib 4 may not be flush with the other axial end of the bearing support 3.

Further, the end face of the fixed impeller 2 connected by the reinforcing rib 4 in the axial direction of the casing 1 is directed to the end face of the reinforcing rib 4 away from the fixed impeller 2, and as shown in fig. 2, the sectional area of the reinforcing rib 4 is gradually reduced.

The end face of the fixed impeller 2 connected by the reinforcing ribs 4 deviates from the end face of the fixed impeller 2 to the reinforcing ribs 4, and the sectional area of the reinforcing ribs 4 (the axial section perpendicular to the casing assembly) is gradually reduced, so that the reinforcing ribs 4 are formed into triangular reinforcing ribs 4 or trapezoidal reinforcing ribs 4 or similar structures, the reinforcing ribs 4 in the shape are not easy to deform, and the strength is high. And along the axial of casing 1, the terminal surface of the one end of fixed impeller 2 is connected to strengthening rib 4 is great, is favorable to improving the joint strength of strengthening rib 4 and fixed impeller 2, and then improves the supporting effect of fixed impeller 2 to bearing support piece 3, is favorable to further improving bearing support piece 3's rigidity.

Of course, the size of the reinforcing ribs 4 along the axial direction of the casing 1 can also be uniformly arranged, that is, the reinforcing ribs 4 have an equal width structure along the axial direction of the casing 1. Or the end face of the fixed impeller 2 connected by the reinforcing rib 4 faces the end face of the reinforcing rib 4 departing from the fixed impeller 2, and the sectional area of the reinforcing rib 4 can also be gradually increased.

Further, the end face of the bearing support 3 connected by the reinforcing ribs 4 in the radial direction of the housing is directed toward the end face of the reinforcing ribs 4 away from the bearing support 3, as shown in fig. 2, the sectional area of the reinforcing ribs 4 is gradually reduced.

The end face of the bearing support part 3 connected by the reinforcing rib 4 deviates from the end face of the bearing support part 3 to the reinforcing rib 4, and the sectional area of the reinforcing rib 4 (which is parallel to the axial section of the housing assembly) is gradually reduced, so that the reinforcing rib 4 is formed into a triangular reinforcing rib 4 or a trapezoidal reinforcing rib 4 or a similar structure, the reinforcing rib 4 in the shape is not easy to deform, and the strength is higher. And from inside to outside along the radial of casing 1, the terminal surface of the one end that bearing support piece 3 is connected to strengthening rib 4 is great, is favorable to improving the joint strength of strengthening rib 4 and bearing support piece 3, and then is favorable to further improving bearing support piece 3's rigidity.

Of course, the size of the reinforcing ribs 4 along the radial direction of the casing 1 can also be uniformly arranged, that is, the reinforcing ribs 4 have an equal width structure along the radial direction of the casing 1. Or the end face of the bearing support 3 connected by the reinforcing rib 4 faces the end face of the reinforcing rib 4 away from the bearing support 3, and the sectional area of the reinforcing rib 4 can be gradually increased.

Specifically, the reinforcing ribs 4 are triangular reinforcing ribs 4 or trapezoidal reinforcing ribs 4.

Because bearing support 3 links to each other with the terminal surface 211 of stator vane wheel 2, then form the corner between the terminal surface 211 of stator vane wheel 2 and bearing support 3's outer peripheral face 31, it connects to adopt triangle strengthening rib 4 or trapezoidal strengthening rib 4 comparatively suitably, existing area of contact who is favorable to increasing strengthening rib 4 and bearing support 3's outer peripheral face 31 and stator vane wheel 2's terminal surface 211, thereby improve joint strength, and strengthening rib 4 itself is difficult for taking place to warp, joint strength is higher, therefore be favorable to improving bearing support 3 and stator vane wheel 2's mutual support effect, further improve bearing support 3's support rigidity, further weaken casing assembly's vibration.

Further, the number of the reinforcing ribs 4 is plural as shown in fig. 2. A plurality of ribs 4 are spaced circumferentially along the bearing support 3 as shown in figure 2.

The quantity of strengthening rib 4 is a plurality of, and a plurality of strengthening ribs 4 have played many positions to bearing support piece 3 along bearing support piece 3's circumference interval distribution, can show the joint strength who improves bearing support piece 3 and decide impeller 2 and support the effect each other to further improve bearing support piece 3's rigidity, further weaken casing assembly's vibration. Further, a plurality of reinforcing ribs 4 are uniformly distributed along the circumferential direction of the bearing support 3.

Specifically, the cabinet 1 includes: a housing 12 and a plurality of support posts 5, as shown in fig. 2. The plurality of support columns 5 are disposed on the inner wall surface of the casing 12 and are spaced apart from each other in the circumferential direction of the casing 1, as shown in fig. 2, and at least a part of the plurality of support columns 5 extends in the axial direction of the casing 1 to be connected to the end surface 211 of the fixed impeller 2.

The casing 1 comprises a casing 12 and a plurality of supporting columns 5, the supporting columns 5 reinforce the casing 1, the strength and the rigidity of the casing 1 are improved, and the further weakening of the vibration of the casing assembly is facilitated. Wherein, a plurality of support columns 5 have played many positions to support casing 12 along casing 1's circumference interval setting, have also played many positions to fixed impeller 2 and have connected, therefore be favorable to further improving casing 1's rigidity, also be favorable to further improving casing 1 and fixed impeller 2's joint strength, also be favorable to improving fixed impeller 2's stability.

Further, at least one part of the support columns 5 extends to the end face 211 of the fixed impeller 2 along the axial direction of the casing 1 to be connected with the end face 211 of the fixed impeller 2, so that the casing 1 can be directly connected with the fixed impeller 2, the casing 1 and the fixed impeller 2 can be mutually supported, the support rigidity of the casing assembly is further improved, and the stability of the fixed impeller 2 is further improved. Compared with the form that all the supporting columns 5 are consistent in structure, a part of the supporting columns 5 are connected with the end face 211 of the fixed impeller 2, the size of the part of the supporting columns 5 can be reduced, the weight of a product is reduced, and the consumption of raw materials is reduced.

Further, the support columns 5 and the reinforcing ribs 4 are arranged in a staggered manner, and an avoidance space 11 is formed between the reinforcing ribs 4 and the support columns 5, as shown in fig. 2.

That is, the support posts 5 are offset from the reinforcing bars 4 and are not connected. Wherein, the form of not connecting makes the air current flow more smoothly after passing fixed impeller 2, and is unimpeded to improve fluidic flow efficiency, improve electric fan 100's work efficiency. The staggered arrangement form is favorable for further enlarging the space between the supporting columns 5 and the reinforcing ribs 4, so that the airflow efficiency is further improved, and the working efficiency of the electric fan 100 is further improved.

Further, the supporting columns 5 are located at the radial outer side of the reinforcing ribs 4, and the supporting columns 5 and the reinforcing ribs 4 are arranged in a staggered manner in the radial direction and in the circumferential direction, as shown in fig. 2. Of course, it is also possible to have only a radial offset or only a circumferential offset.

Further, the number of the supporting columns 5 is equal to the number of the reinforcing beads 4, as shown in fig. 2.

The quantity of support column 5 equals with the quantity of strengthening rib 4, and the structure is comparatively regular, and the machine shaping of being convenient for also is favorable to the casing subassembly atress balanced, and is more stable.

Of course, the number of the supporting columns 5 and the number of the reinforcing ribs 4 can also be unequal, and can be adjusted according to needs in the actual production process.

Further, both ends of the support column 5 in the axial direction of the cabinet 1 are respectively denoted as a third end 54 and a fourth end 55, as shown in fig. 2. The axial distance between the third end 54 and the fixed impeller 2 is smaller than the axial distance between the fourth end 55 and the fixed impeller 2. That is, the third end 54 of the support column 5 is located closer to the stator vane wheel 2, and the fourth end 55 of the support column 5 is located farther from the stator vane wheel 2.

Wherein the fourth ends 55 of a part of the plurality of support columns 5 are provided with positioning steps 51, as shown in fig. 2. The positioning step 51 includes a first step surface 512 and a second step surface 513, as shown in FIG. 2. The second step surface 513 is connected to the first step surface 512, and the second step surface 513 is provided with a connection hole 511, and the connection hole 511 extends in the axial direction of the housing 1, as shown in fig. 5 and 6.

The positioning step 51 can position the stator core, which is advantageous for the assembly of the stator core. Specifically, the first step surface 512 of the positioning step 51 can abut against the outer peripheral surface of the stator core to perform a positioning function, and the second step surface 513 can abut against the axial end surface of the stator core to perform a positioning function. And the second step surface 513 is provided with a connecting hole 511 extending along the axial direction of the housing 1, which is convenient for fixing the stator core by using fasteners such as screws and the like, so as to realize the assembly and fixation of the stator core and the housing 1.

Further, the fourth end 55 of the remaining part of the plurality of support columns 5 is provided with a slope 52, and the slope 52 extends obliquely toward the third end 54 of the support column 5 and toward the central axis of the cabinet 1. This makes the part of the supporting columns 5 form a structure similar to a triangular reinforcing rib or a trapezoidal reinforcing rib, which is beneficial to improving the rigidity and the strength of the casing 1.

Further, the outer diameter of the stator wheel 2 is smaller than the inner diameter of the casing 1, and the casing assembly includes a fan housing 6, as shown in fig. 5 and 6. The fan housing 6 is sleeved outside the fixed impeller 2 and connected with the casing 1. The radially outer end of the support pillar 5 connecting the fixed impeller 2 is provided with an avoiding step 53, and as shown in fig. 5 and 6, the avoiding step 53 includes a third step surface 531 and a fourth step surface 532. The third step surface 531 extends to be flush with the outer circumferential surface of the wheel body 21 of the fixed impeller 2 in the axial direction of the casing 1, as shown in fig. 5 and 6, and a flow guide channel 63 is formed between the third step surface 531 and the wind cover 6. The fourth step surface 532 is connected to the third step surface 531, and the fourth step surface 532 is connected to the inner wall surface of the housing, as shown in fig. 5 and 6.

After the electric fan 100 is assembled, the casing 1 is connected to the fan housing 6, the fan housing 6 is sleeved outside the fixed impeller 2, and the airflow is sucked from the opening of the fan housing 6, flows to the fixed impeller 2 through the movable impeller 102, flows to the inner wall surface of the fan housing 6 along the guide vane 22 of the fixed impeller 2, and further flows along the inner wall surface of the casing 1. Therefore, the outer diameter of the fixed impeller 2 is smaller than the inner diameter of the casing 1, which facilitates the airflow output by the fixed impeller 2 to smoothly flow to the inner wall surface of the casing 1, further reduces the airflow loss, and is also beneficial to reducing the radial size of the casing assembly.

Further, for the supporting column 5 directly connected to the end surface 211 of the fixed impeller 2, the avoiding step 53 is provided at the radial outer end of the supporting column 5, and since the third step surface 531 of the avoiding step 53 is flush with the outer peripheral surface of the wheel body 21 of the fixed impeller 2, it is ensured that a gap is formed between the inner wall surfaces of the supporting column 5 and the fan housing 6 and the inner wall surface of the housing, and the flow guide channel 63 is formed, so that the air flow output by the fixed impeller 2 is not blocked, the smoothness of the air duct is ensured, the reduction of the air flow loss is facilitated, and the working efficiency of the electric fan 100 is further improved. And the fourth step surface 532 of the avoiding step 53 is connected with the inner wall surface of the housing, so that the reliable connection of the support pillar 5 and the housing is ensured.

Specifically, the stator wheel 2 includes a wheel body 21 and a plurality of guide vanes 22 provided on the wheel body 21, and the wheel body 21 is connected to the casing 1. The guide vanes 22 are disposed on an end surface of the wheel body 21 facing away from the bearing support 3, and are distributed at intervals along a circumferential direction of the wheel body 21 to form radial guide vanes, as shown in fig. 1. The radial guide vane and the fan housing 6 of the casing assembly enclose a radial flow passage 61, as shown in fig. 5.

The stator vane wheel 2 includes a wheel body 21 and a plurality of guide vanes 22. The wheel body 21 is generally cylindrical or disc-shaped, and is concentrically arranged with the casing 1 and connected with the casing 1 to realize the connection function of the fixed impeller 2 and the casing 1.

The guide vanes 22 may be disposed on an end surface 211 of the wheel body 21 facing away from the bearing support 3, and are distributed in an annular array along a circumferential direction of the wheel body 21, so as to form radial guide vanes, a gap between radial inner ends of the radial guide vanes forms an air inlet, and a gap between radial outer ends forms an air outlet, so that the air flow flows out of the stator impeller 2 along a radial direction to reach an inner wall surface of the fan housing 6, and then flows toward the casing 1 along the fan housing 6, that is, flows toward an inner wall surface of the fan housing 6 along the radial flow passage 61, and then flows toward the casing. The radial guide vane of the scheme has a rectification effect on the fluid, is beneficial to reducing the fluid loss, improving the working efficiency of the electric fan 100 and reducing the radial size of the electric fan 100.

Further, an overflow gap is formed between the radially outer end of the radial guide vane and the fan housing 6, as shown in fig. 5.

Because the air current needs to take place the wide-angle and turn to after radial guide vane flows out, then flow direction casing 1, therefore set up the clearance of overflowing between radial outer end and fan housing 6 of radial guide vane, can play certain cushioning effect to the air current, the air current of being convenient for turns to, is favorable to reducing the air loss, improves electric fan 100's work efficiency.

Example two

The difference from the first embodiment is that: the guide vanes 22 are disposed on the outer circumferential surface of the wheel body 21, and are distributed at intervals along the circumferential direction of the wheel body 21 to form axial guide vanes, as shown in fig. 4. The axial guide vane and the fan housing 6 of the casing assembly enclose an axial flow passage 62, as shown in fig. 6.

That is, the guide vanes 22 may also be disposed on the outer circumferential surface of the wheel body 21 and distributed in an annular array along the circumferential direction of the wheel body 21, so as to form axial guide vanes, a gap between axial ends of the axial guide vanes forms an air inlet, and a gap between axial outer ends forms an air outlet, so that the airflow flows out of the fixed impeller 2 along the axial direction to reach the inner wall surface of the fan housing 6, then flows toward the casing 1 along the fan housing 6, that is, reaches the inner wall surface of the fan housing 6 along the axial flow passage 62, and then flows toward the casing 1. The axial guide vane of the scheme also has a rectification effect on the fluid, and is beneficial to shortening the axial size of the electric fan 100.

Further, the radially outer end of the axial guide vane is in contact with the wind shield 6, as shown in fig. 6.

Because the airflow does not need to turn in a large angle after flowing out of the axial guide vane and can directly flow to the casing 1, the radial outer end of the axial guide vane is in contact with the fan cover 6, the rectification effect can be prevented from being weakened, the airflow loss can be reduced, and the working efficiency of the electric fan 100 is improved.

In any of the above embodiments, the casing 1, the fixed impeller 2 and the bearing support 3 are integrally formed as a single structure.

In the final assembly process of the electric fan 100, the more parts and the more final assembly processes, the higher the production cost, and the larger the performance fluctuation of the finished product due to the accumulation of assembly errors in multiple processes. Particularly, in the assembling process of the fixed impeller 2 and the casing 1, the working procedure is complicated, and the reject ratio is high due to overlarge assembling error.

In this scheme, casing 1, decide impeller 2 and bearing support piece 3 formula structure as an organic whole, existing joint strength who does benefit to between the improvement three has saved the assembly process between the three again, has reduced the assembly error of deciding impeller 2 and casing 1 simultaneously, and then has reduced the performance fluctuation of product, has reduced the rejection rate of product.

Further, for the scheme that the casing 1 is connected with the fixed impeller 2 through the supporting column 5, the casing 1, the supporting column 5, the fixed impeller 2 and the bearing support 3 are of an integrated structure formed integrally.

Specifically, the casing 1, the stator vane 2 and the bearing support 3 are generally made of plastic, and thus may be manufactured by injection molding.

EXAMPLE III

An electric fan, as shown in fig. 7, comprising: an enclosure assembly and impeller as in any one of the previous embodiments. The movable impeller is matched with the fixed impeller of the casing component.

The electric blower provided by this embodiment includes the enclosure assembly according to any one of the above embodiments, so that all the advantages of any one of the above embodiments are achieved, and further description is omitted here.

Specifically, the electric blower 100 includes a stator and a rotor, which are coupled and disposed in the cabinet 1. The casing 1 is connected with the fan housing, the movable impeller 102 is located in the fan housing, the movable impeller 102 rotates at a high speed, negative pressure is generated in the fan housing, airflow is sucked from the opening of the movable impeller 102, passes through the guide vanes 22 of the movable impeller 102 to the guide vanes 22 of the fixed impeller 2, then the air is expanded by the guide vanes 22, and then flows along the casing 1 along the axial direction.

Example four

A vacuum cleaner, as shown in fig. 8, comprising: the electric blower and the cleaner body according to the above embodiments. The electric fan is arranged in the dust collector main body.

The vacuum cleaner provided by the embodiment comprises the electric fan of the above embodiment, so that all the beneficial effects of any one of the above embodiments are achieved, and further description is omitted here.

Specifically, the cleaner body 202 is provided with a dust suction port, which communicates with the mouth of the movable impeller 102. The cleaner body 202 is also provided with a storage structure for storing dust.

Some specific examples are described below in conjunction with the accompanying drawings.

Concrete example 1

A casing assembly comprises a casing 1, a stator impeller 2 and a bearing support 3. The casing 1 is cylindrical, and at least 2 support columns 5 radially protrude from the inner wall of the cylinder. The stator impeller 2 is located on one side of the end surface of the casing 1, and includes a wheel body 21 and a guide vane 22 disposed on the wheel body 21. The end surface 211 of the wheel body 21 has a bearing support 3 with a center hole axially projecting toward the housing 1 side. The casing 1 is connected with the fixed impeller 2 through a support column 5.

Wherein, the number of the supporting columns 5 for connecting the machine shell 1 and the fixed impeller 2 is at least 2.

Further, the guide vanes 22 of the stator vane wheel 2 are located on the end surface 211 of the wheel body 21 and distributed in an annular array to form radial guide vanes.

The guide vane 22 of the stator vane wheel 2 is integrally connected to the wheel body 21.

At least 2 reinforcing ribs 4 are provided between the outer peripheral surface 31 of the bearing support 3 and the end surface 211 of the wheel body 21.

The casing assembly is integrally formed without assembly process.

Concrete example 2

The differences from the specific example 1 are: the guide vanes 22 are located in the circumferential direction of the circular plate of the impeller and are distributed in an annular array to form axial guide vanes.

The shell assembly has the following beneficial effects:

the fixed impeller 2 and the casing 1 can be integrally processed and formed, so that the total assembly process is reduced, and the manufacturing cost is reduced. Meanwhile, the assembly error of the fixed impeller 2 and the casing 1 is eliminated, so that the product performance of the production line is more stable. In other words, stator wheel 2 is connected through support column 5 with casing 1, forms an organic whole, then assembles with other spare parts, has reduced the assembly process, has reduced stator wheel 2 and casing 1's assembly error simultaneously to the performance that has reduced the product is undulant, reduces and produces the line rejection rate.

The ribs 4 on the outer peripheral surface 31 of the bearing support 3 increase the rigidity of the housing 1 and reduce vibration.

There is no obstacle between the support column 5 and the bearing support 3, so that the air can flow smoothly, and the efficiency of the fan is improved.

The principles of the two specific examples described above are explained below with reference to the drawings.

Fig. 1 illustrates a partial structural view of a cabinet assembly of specific example 1. The housing assembly in this example comprises a housing 1, a stator 2 and a bearing support 3. The casing 1 is cylindrical in shape and is provided with a plurality of support columns 5 which radially protrude towards the inner side of the inner wall of the cylinder, and part of the support columns 5 axially protrude out of the end face of the cylinder; the fixed impeller 2 is located on one side of the end surface of the casing 1, and includes a wheel body 21 and guide vanes 22 arranged on the wheel body 21, the guide vanes 22 are located on the end surface 211 of the disk-shaped wheel body 21, and are annularly and uniformly distributed in the circumferential direction, so that the fixed impeller has a rectifying effect on fluid, and the fluid loss is reduced. The lower bottom surface of the circular plate is connected with a supporting column 5 protruding out of the end surface of the cylinder into a whole. The end surface 211 of the wheel body 21 has a bearing support 3 with a center hole axially protruding toward the casing 1 side, and the outer circumference of the bearing support 3 has a rib 4 integrally connected to the circular bottom surface of the impeller.

Fig. 2 is a schematic view of another view of the casing assembly in fig. 1, and the supporting column 5 is used to connect the impeller 102 and the casing 1, so that the two parts are integrated. On the other hand, the rigidity of the whole structural part can be enhanced, the more the number of the support columns 5 is, the stronger the cylinder rigidity of the machine shell 1 is, and meanwhile, the upper fixed impeller 2 is more stable. The bearing support part 3 is the most stressed part of the whole machine shell 1, and the reinforcing ribs 4 on the excircle can enhance the connection rigidity of the bearing support part 3, so that the vibration of the whole assembly is reduced. Meanwhile, the reinforcing ribs 4 and the supporting columns 5 are not connected into a whole, so that the fluid can flow more smoothly after flowing below the fixed impeller 2 without obstacles, and the fluid efficiency can be improved.

Fig. 4 is a partial schematic view of a housing assembly of specific example 2. The guide vanes 22 on the fixed impeller 2 are uniformly distributed along the circumferential direction of the circular plate to form axial guide vanes. The axial guide vane design also has a flow straightening effect, which reduces the axial size of the casing assembly, but the efficiency is less than that of the radial guide vane.

Fig. 5 is a schematic view of an electric fan 100 duct system. The movable impeller 102 rotates at a high speed, negative pressure is formed in the fan housing, wind is sucked from the mouth of the movable impeller 102, passes through the blades of the movable impeller 102 and reaches the guide blades 22 of the fixed impeller 2, and then the wind expands through the guide blades 22 and flows down along the support column 5 in the axial direction.

It will be appreciated that the top-to-bottom orientation of the drawings is the reverse of the top-to-bottom orientation of the assembled cleaner. Such as: in fig. 3, 6 and 7 of the present application, the fixed impeller is located above the casing, and the airflow moves from top to bottom; after the electric fan is assembled to the main body of the dust collector, the fixed impeller is positioned below the casing, and the airflow moves from bottom to top.

In summary, according to the casing assembly provided by the invention, the reinforcing rib is additionally arranged between the bearing support piece and the fixed impeller, and the bearing support piece and the fixed impeller are connected through the reinforcing rib, so that the support rigidity of the bearing support piece can be effectively improved, the vibration of the whole casing assembly is reduced, the vibration of the electric fan is reduced, the improvement of user experience is facilitated, and the service life of the electric fan and the service life of the whole dust collector are prolonged.

It will be appreciated that the top-to-bottom orientation of the drawings is the reverse of the top-to-bottom orientation of the assembled cleaner. Such as: in fig. 3 of the present application, the fixed impeller is located above the casing, and after the electric blower is assembled to the cleaner body, the fixed impeller is located below the casing.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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 invention. In this specification, the schematic representations of the terms used above do not necessarily 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.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (14)

1. A chassis assembly, comprising:

a housing;

the fixed impeller is connected with the shell and is arranged concentrically with the shell; and

the bearing support piece is connected with the end face of the fixed impeller and protrudes towards the inner side of the shell, and a bearing chamber is defined by the bearing support piece;

and the reinforcing rib is connected with the peripheral surface of the bearing support piece and the end surface of the fixed impeller.

2. The cabinet assembly according to claim 1,

the axial end, facing the fixed impeller, of the surface, connected with the bearing support part, of the reinforcing rib is marked as a first end, and the axial end, facing away from the fixed impeller, of the surface is marked as a second end; wherein the content of the first and second substances,

the first end of the reinforcing rib extends to be connected with the end face of the fixed impeller along the axial direction of the casing, or a gap is formed between the first end of the reinforcing rib and the end face of the fixed impeller; and/or

The second end of strengthening rib is followed the axial extension of casing extend to with bearing support spare deviates from the terminal surface of deciding the impeller flushes, perhaps the second end of strengthening rib with bearing support spare deviates from the terminal surface setting of staggering of deciding the impeller.

3. The cabinet assembly according to claim 1,

the end face of the fixed impeller connected with the reinforcing rib faces the end face of the reinforcing rib deviating from the fixed impeller along the axial direction of the shell, and the sectional area of the reinforcing rib is gradually reduced; and/or

And the end face of the bearing support part is connected with the end face of the reinforcing rib towards the end face of the reinforcing rib deviating from the bearing support part along the radial direction of the casing, and the sectional area of the reinforcing rib is gradually reduced.

4. The cabinet assembly according to any one of claims 1 to 3,

the reinforcing ribs are triangular reinforcing ribs; or

The reinforcing ribs are trapezoidal reinforcing ribs.

5. The cabinet assembly according to any one of claims 1 to 3, wherein the cabinet comprises:

a housing; and

the supporting columns are arranged on the inner wall surface of the shell and are arranged at intervals along the circumferential direction of the shell, and at least one part of the supporting columns extends to the end face of the fixed impeller along the axial direction of the shell to be connected with the end face of the fixed impeller.

6. The cabinet assembly according to claim 5,

the support column with the strengthening rib setting of staggering just the strengthening rib with it dodges the space to have between the support column.

7. The cabinet assembly according to claim 6,

the number of the supporting columns is equal to that of the reinforcing ribs; or

The number of the supporting columns is not equal to that of the reinforcing ribs.

8. The cabinet assembly according to claim 5,

the axial end of the supporting column facing the fixed impeller is marked as a third end, and the axial end of the supporting column facing away from the fixed impeller is marked as a fourth end;

a positioning step is arranged at the fourth end of one part of the support columns, the positioning step comprises a first step surface and a second step surface, the second step surface is connected with the first step surface in a turning mode, the second step surface is provided with a connecting hole, and the connecting hole extends along the axial direction of the shell;

and the fourth end of the rest part of the support columns is provided with an inclined plane which extends obliquely towards the direction close to the third end of the support column and close to the central axis of the casing.

9. The cabinet assembly according to claim 5,

the outer diameter of the fixed impeller is smaller than the inner diameter of the casing, the casing component comprises a fan cover, and the fan cover is sleeved on the outer side of the fixed impeller and connected with the casing;

an avoiding step is arranged at the radial outer end of the supporting column connected with the fixed impeller, and the avoiding step comprises a third step surface and a fourth step surface;

the third step surface extends to be flush with the peripheral surface of the wheel body of the fixed impeller along the axial direction of the casing, and a flow guide channel is formed between the third step surface and the fan cover;

the fourth step surface is connected with the third step surface in a turning manner, and the fourth step surface is connected with the inner wall surface of the shell.

10. The cabinet assembly according to any one of claims 1 to 3,

the fixed impeller comprises an impeller body and a plurality of guide vanes arranged on the impeller body, and the impeller body is connected with the casing;

the guide vanes are arranged on the end surface of the wheel body, which is far away from the bearing supporting part, and are distributed at intervals along the circumferential direction of the wheel body to form radial guide vanes, and radial overflowing channels are defined by the radial guide vanes and a fan cover of the casing assembly; or a plurality of guide vanes are arranged on the outer peripheral surface of the wheel body and are distributed at intervals along the circumferential direction of the wheel body to form axial guide vanes, and an axial overflowing channel is defined by the axial guide vanes and the fan cover of the casing component.

11. The cabinet assembly according to claim 10,

an overflowing gap is formed between the radial outer end of the radial guide vane of the fixed impeller and the fan cover; and/or

And the radial outer end of the axial guide vane of the fixed impeller is in contact with the fan cover.

12. The cabinet assembly according to any one of claims 1 to 3,

the casing, the fixed impeller and the bearing support piece are of an integrated structure formed in an integrated mode.

13. An electric fan, comprising:

the enclosure assembly of any one of claims 1 to 12;

the movable impeller is matched with the fixed impeller of the casing component.

14. A vacuum cleaner, comprising:

the electric fan of claim 13;

the electric fan is arranged in the dust collector main body.

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