CN112943693A

CN112943693A - Casing subassembly, electric fan and dust catcher

Info

Publication number: CN112943693A
Application number: CN201911172217.XA
Authority: CN
Inventors: 徐进; 乔正忠; 吴魁; 杨继峰
Original assignee: Guangdong Welling Motor Manufacturing Co Ltd
Current assignee: Guangdong Welling Motor Manufacturing Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2021-06-11

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 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 one end of the reinforcing rib is connected with the peripheral surface of the bearing support piece, and the other end of the reinforcing rib is connected with the shell. According to the casing assembly provided by the invention, the reinforcing ribs are additionally arranged between the bearing support piece and the casing, the bearing support piece and the casing are connected through the reinforcing ribs, and the bearing support piece is directly connected with the end face of the fixed impeller, so that the casing, the bearing support piece and the fixed impeller are connected into a whole to form a mutually supporting structure, the supporting rigidity of the casing assembly is greatly enhanced, 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.

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 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 one end of the reinforcing rib is connected with the peripheral surface of the bearing support piece, and the other end of the reinforcing rib is connected with the shell.

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 casing, the bearing support piece and the casing are connected through the reinforcing ribs, and the bearing support piece is directly connected with the end face of the fixed impeller, so that the casing, the bearing support piece and the fixed impeller are connected into a whole to form a mutually supporting structure, the supporting rigidity of the casing assembly is greatly enhanced, 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 wheel, a bearing support, and a stiffener. The housing is generally cylindrical and is used to house the stator, rotor, etc. The fixed impeller is arranged concentrically with the casing and is used for guiding airflow to flow. The bearing support piece is connected with the end face of the fixed impeller and extends inwards the casing in a protruding mode, a bearing chamber is defined by the bearing support piece, and the bearing chamber is used for containing the positioning bearing. Because bearing support piece is used for installing the location bearing, be 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 casing through the strengthening rib, make bearing support piece and casing even as an organic whole, bearing support piece's terminal surface and stator vane wheel are even as an organic whole simultaneously, then the casing, bearing support piece, stator vane wheel supports each other, compare in casing among the prior art, the mutually independent scheme of bearing support piece, this is showing the support rigidity that has improved casing subassembly, can show the vibration that reduces casing subassembly, thereby reduce electric fan and dust catcher complete machine vibration, play 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, the housing includes: a housing; and the supporting column is arranged on the inner wall surface of the shell, one end of the reinforcing rib is connected with the peripheral surface of the bearing support piece, and the other end of the reinforcing rib is connected with the supporting column.

The casing includes casing and support column, and the support column has played the additional strengthening to the casing, has improved the intensity and the rigidity of casing, is favorable to further weakening the vibration of casing subassembly.

Wherein, bearing support piece's outer peripheral face passes through the strengthening rib and links to each other with the support column, and the existing length that is favorable to shortening the strengthening rib, and then lightens casing weight, reduces product cost, is favorable to improving the smooth and easy nature that the air current flows in the casing again to reduce the air current loss, improve electric fan's work efficiency. Meanwhile, the supporting columns and the reinforcing ribs can be mutually reinforced, so that the supporting rigidity of the shell and the bearing supporting piece is favorably improved, and the connecting strength of the shell and the bearing supporting piece is favorably improved.

In the technical scheme, the number of the supporting columns is multiple, and the supporting columns are arranged at intervals along the circumferential direction of the shell; the number of the supporting columns is equal to that of the reinforcing ribs, and the supporting columns and the reinforcing ribs are in one-to-one correspondence and connected; or the number of the supporting columns is larger than that of the reinforcing ribs; or the number of the supporting columns is smaller than that of the reinforcing ribs.

The quantity of support column is a plurality of, and a plurality of support columns set up along the circumference interval of casing, have played many parts to the casing and have supported, therefore be favorable to further improving the rigidity of casing, also be favorable to further improving casing and bearing support piece's joint strength, also be favorable to improving the stability of deciding the impeller.

The quantity of support column can equal with the quantity of strengthening rib, and every strengthening rib all corresponds joint support post, then every support column all links to each other through strengthening rib and bearing support piece's outer peripheral face, can show the joint strength who improves casing and bearing support piece, improves the support rigidity of casing subassembly, and the structure is comparatively regular, the machine-shaping of being convenient for.

Or the number of the supporting columns can be larger than that of the reinforcing ribs, and a part of the supporting columns are correspondingly connected with the reinforcing ribs. The other part of the supporting columns are not correspondingly connected with the reinforcing ribs, and the supporting rigidity of the machine shell can be improved by the part of the supporting columns, so that the vibration of the machine shell assembly is weakened.

Or the number of the supporting columns can be smaller than that of the reinforcing ribs, and a part of the reinforcing ribs are correspondingly connected with the supporting columns. And the other part of reinforcing ribs are not correspondingly connected with the supporting columns, and the part of reinforcing ribs can improve the supporting rigidity of the bearing supporting part, so that the vibration of the machine shell assembly is weakened.

In the above technical solution, an axial end of the reinforcing rib facing the fixed impeller is denoted as a first end, an axial end of the reinforcing rib facing away from the fixed impeller is denoted as a second end, an axial end of the supporting column facing the fixed impeller is denoted as a third end, and an axial end of the supporting column facing away from the fixed impeller is denoted as a fourth end; the first end of the reinforcing rib is flush with the third end of the supporting column which is correspondingly connected; or the first end of the reinforcing rib is not flush with the third end of the supporting column which is correspondingly connected; or the first end of the reinforcing rib protrudes out of the third end of the supporting column correspondingly connected along the axial direction of the shell; or the third end of the supporting column protrudes out of the first end of the reinforcing rib correspondingly connected along the axial direction of the shell

The axial both ends of strengthening rib are first end and second end respectively, and first end is towards deciding the impeller, and is close apart from deciding the impeller, and the second end deviates from deciding the impeller, and is far apart from deciding the impeller. The axial both ends of support column are marked as third end and fourth end respectively, and the third end is towards fixed impeller, and is close apart from fixed impeller, and the fourth end deviates from fixed impeller, and is far away from fixed impeller. Wherein, the first end of strengthening rib flushes with the third end that corresponds the support column of being connected, that is to say, the strengthening rib that links together flushes with the axial end face that the impeller was decided to the support column orientation, and this makes the connection structure of support column and strengthening rib comparatively regular, and the machine shaping of being convenient for, and makes the inner structure of casing subassembly regular relatively, is favorable to reducing the air loss to improve electric fan's work efficiency.

Or the axial end faces, facing the fixed impeller, of the reinforcing ribs and the supporting columns which are connected together can also be uneven. Such as: the first end of the reinforcing rib axially protrudes out of the third end of the supporting column, namely, the axial distance between the first end of the reinforcing rib and the fixed impeller is smaller than the axial distance between the third end of the supporting column and the fixed impeller, so that the supporting rigidity of the part of the bearing supporting piece close to the fixed impeller is improved, and the stability of the fixed impeller is improved; and when the first end of the reinforcing rib extends to be connected with the end face of the fixed impeller, the connection reliability of the fixed impeller and the bearing support piece can be further improved, and the support rigidity of the casing assembly is further improved. Or the fourth end of support column along the axial protrusion in the first end of strengthening rib, that is to say the axial distance between the third end of support column and the fixed impeller is less than the axial distance between the first end of strengthening rib and the fixed impeller, be favorable to improving the support rigidity that the casing is close to the position of fixed impeller like this, be favorable to improving the reliability of being connected of casing and fan housing, and realized deciding the impeller and directly linking to each other of casing when the third end of support column extends to and links to each other with the terminal surface of fixed impeller, can further improve the support rigidity of casing subassembly.

In the technical scheme, the axial height of the reinforcing rib is smaller than that of the support column which is correspondingly connected.

The axial height of the reinforcing rib is smaller than that of the support column correspondingly connected, namely the axial distance between the first end and the second end of the reinforcing rib is smaller than that between the third end and the fourth end of the support column. The strengthening rib can be reduced like this to the occupation of casing inner space, the assembly of the stator module of being convenient for, rotor subassembly also can weaken the strengthening rib and to blockking of air current, be favorable to reducing the air current loss, also be favorable to reducing product weight simultaneously, be favorable to realizing the lightweight of electric fan and dust catcher.

In the technical scheme, at least part of two adjacent support columns are connected through connecting ribs; and/or at least part of two adjacent reinforcing ribs are connected through connecting ribs.

In a plurality of support columns, at least one part of the two adjacent support columns are provided with connecting ribs, the two ends of each connecting rib are respectively connected with the two adjacent support columns, the supporting rigidity of the two adjacent support columns can be improved, the supporting rigidity of the casing assembly is further improved, and the vibration of the casing assembly is further weakened. Or, in a plurality of strengthening ribs, be equipped with the splice bar between at least some adjacent two strengthening ribs, two adjacent strengthening ribs are connected respectively at the both ends of splice bar, can improve the support rigidity of two adjacent strengthening ribs, and then improve the support rigidity of casing subassembly. In addition, splice bar, support column, strengthening rib are mutually supported, divide into latticedly with the inner space of casing, also can play the water conservancy diversion effect to the air current to improve electric fan's work efficiency.

In the above technical solution, the connecting rib is arc-shaped and is concentrically arranged with the casing.

The splice bar is the arc muscle, with the shape adaptation of casing for the inner structure of product is comparatively regular, is favorable to reducing the air current loss, and then improves electric fan's work efficiency, also comparatively pleasing to the eye.

In the above technical solution, a fourth end of a part of the plurality of support pillars is provided with a positioning step, the positioning step includes a first step surface and a second step surface, the second step surface is connected with the first step surface, and the second step surface is provided with a connection hole, the connection hole extends along the axial direction of the housing; 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.

The fourth end (that is to say, keep away from the axial end of fixed impeller) 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 (namely the axial ends far away from the fixed impeller), and the inclined planes extend obliquely towards the direction close to the third ends of the support columns and the central axis of the casing, 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 casing are improved.

In the above technical solution, at least a part of the plurality of support columns extends in the axial direction of the casing to be connected with the end face of the fixed impeller.

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 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 far away from the bearing support part and are distributed at intervals along the circumferential direction of the wheel body to form radial guide vanes, and a radial overflowing channel is defined by the radial guide vanes and a fan cover of the shell component; 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 far away 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 flow 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 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; at least one part of the reinforcing ribs extends along the axial direction of the casing assembly to be connected with the end face of the fixed impeller; or an avoidance space is arranged between the plurality of reinforcing ribs and the fixed impeller; or an avoidance space is formed between one part of the reinforcing ribs and the shell.

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 casing and the effect of supporting each other to further improve casing subassembly's rigidity, further weaken casing subassembly's vibration.

At least one part of a plurality of strengthening ribs extends to and links to each other with the terminal surface of deciding the impeller along the axial of casing, can realize strengthening rib and the lug connection who decides the impeller for bearing support spare can support each other better with deciding the impeller, thereby further improve bearing support spare's support rigidity, further improve the stability of deciding the impeller. Compared with the mode that the structures of all the reinforcing ribs are consistent, one part of the plurality of reinforcing ribs is connected with the end face of the fixed impeller, so that the sizes of the reinforcing ribs can be reduced, the weight of a product is reduced, and the consumption of raw materials is reduced.

Or all have between a plurality of strengthening ribs and the fixed impeller and dodge the space, the strengthening rib all does not link to each other with the fixed impeller promptly, can reduce stopping of air current, is favorable to reducing the air loss, improves electric fan's work efficiency.

Or an avoidance space is arranged between one part of the reinforcing ribs and the shell, namely: a plurality of strengthening ribs are not all directly continuous with the casing, but have some and do not extend to and link to each other with the support column of casing or casing, can play the reinforcing effect to bearing support piece equally, and can reduce blockking of air current, be favorable to improving 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 on 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 schematic perspective view of a housing assembly according to some embodiments;

FIG. 4 is a front view of the housing assembly of FIG. 3;

FIG. 5 is a schematic perspective view of a housing assembly according to some embodiments of the invention;

FIG. 6 is a front view of the housing assembly of FIG. 5;

FIG. 7 is a schematic perspective view of a housing assembly according to some embodiments of the invention;

FIG. 8 is a cross-sectional structural schematic of a housing assembly according to some embodiments of the invention;

FIG. 9 is a cross-sectional structural schematic of a housing assembly according to some embodiments of the invention;

FIG. 10 is a schematic block diagram of an electric fan in accordance with some embodiments of the invention;

figure 11 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 part names in fig. 1 to 11 is:

the vacuum cleaner comprises a machine shell 1, an 11 avoiding space, a 12 shell, a 2 fixed impeller, a 21 wheel body, a 211 end surface, a 22 guide vane, a 3 bearing support piece, a 31 outer peripheral surface, a 32 bearing chamber, a 4 reinforcing rib, a 41 first end, a 42 second end, a 5 supporting column, a 51 positioning step, a 511 connecting hole, a 512 first step surface, a 513 second step surface, a 52 inclined surface, a 53 avoiding step, a 531 third step surface, a 532 fourth step surface, a 54 third end, a 55 fourth end, a 6 fan cover, a 61 radial overflowing channel, a 62 axial overflowing channel, a 63 diversion channel, a 7 connecting rib, a 100 electric fan, a 102 movable impeller, a 104 machine shell component, a 200 vacuum cleaner and a 202 vacuum cleaner main body.

Wherein the unidirectional arrows in fig. 7 and 8 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 11.

Example one

A chassis assembly 104, comprising: a casing 1, a stator vane 2, a bearing support 3 and a reinforcing rib 4, as shown in fig. 1, 3 and 5.

Specifically, the fixed impeller 2 is disposed concentrically with the casing 1, as shown in fig. 4 and 6.

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.

One end of the reinforcing rib 4 is connected to the outer circumferential surface 31 of the bearing support 3, and the other end of the reinforcing rib 4 is connected to the casing 1, as shown in fig. 2.

The casing subassembly 104 that this embodiment provided, strengthening rib 4 has been add between bearing support piece 3 and casing 1, bearing support piece 3 and casing 1 are connected through strengthening rib 4, and bearing support piece 3 directly links to each other with the terminal surface 211 of deciding impeller 2, this makes casing 1, bearing support piece 3 and decide impeller 2 interconnect and become integrative, constitute the structure of mutual support, casing subassembly 104's support rigidity has been strengthened greatly, make whole casing subassembly 104's vibration reduce, thereby reduce electric fan 100 vibration, not only be favorable to improving user experience, be favorable to prolonging the life of electric fan 100 and the whole machine of dust catcher 200 again.

Specifically, the casing assembly 104 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 arranged concentrically with the casing 1 for guiding the flow of 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 the positioning bearing. Because bearing support piece 3 is used for installing the locating bearing, be the biggest part of whole casing subassembly 104 atress, the risk that takes place the vibration is the highest, therefore this scheme connects bearing support piece 3's peripheral face 31 and casing 1 through strengthening rib 4, make bearing support piece 3 and casing 1 link as an organic whole, bearing support piece 3's terminal surface links as an organic whole with stator vane wheel 2 simultaneously, then casing 1, bearing support piece 3, stator vane wheel 2 support each other, compare in casing 1 among the prior art, the mutually independent scheme of bearing support piece 3, this support rigidity that has showing improvement casing subassembly 104, can show the vibration that reduces casing subassembly 104, thereby reduce electric fan 100 and dust catcher 200 complete machine vibration, play good damping effect.

Further, the stator impeller 2 is located on one side in the axial direction of the casing 1, as shown in fig. 4 and 6.

The fixed impeller 2 is arranged on one axial side of the casing 1, so that the occupation of the fixed impeller 2 on the internal space of the casing 1 is avoided, the space utilization rate of the casing 1 is improved, the axial size of the casing 1 is favorably shortened, and the product cost is reduced.

Specifically, the cabinet 1 includes: a housing 12 and a support column 5. In which the support column 5 is provided on the inner wall surface of the housing 12, as shown in fig. 2.

The casing 1 comprises the shell 12 and the supporting columns 5, and the supporting columns 5 reinforce the casing 1, so that the strength and rigidity of the casing 1 are improved, and the vibration of the casing assembly 104 is further weakened.

Further, one end of the reinforcing rib 4 is connected to the outer circumferential surface 31 of the bearing support 3, and the other end of the reinforcing rib 4 is connected to the support post 5, as shown in fig. 2.

In this scheme, bearing support piece 3's outer peripheral face 31 links to each other with support column 5 through strengthening rib 4, has both been favorable to shortening the length of strengthening rib 4, and then alleviates casing 1 weight, reduces product cost, is favorable to improving the smooth and easy nature that the air current flows in casing 1 again to reduce air loss, improve electric fan 100's work efficiency.

Meanwhile, the supporting columns 5 and the reinforcing ribs 4 can also mutually reinforce, so that the supporting rigidity of the machine shell 1 and the bearing support piece 3 is improved, and the connecting strength of the machine shell 1 and the bearing support piece 3 is also improved.

Of course, the reinforcing ribs 4 may also be connected to the housing 12.

Specifically, the number of the support columns 5 is plural as shown in fig. 2. A plurality of support columns 5 are provided at intervals in the circumferential direction of the casing 1, as shown in fig. 2.

Set up a plurality of support columns 5 at casing 1's circumference interval, played many positions to casing 1 and supported, therefore be favorable to further improving casing 1's rigidity, also be favorable to further improving casing 1 and bearing support piece 3's joint strength, also be favorable to improving the stability of deciding impeller 2.

Further, the number of the supporting columns 5 is equal to the number of the reinforcing ribs 4, and the supporting columns are connected in a one-to-one correspondence, as shown in fig. 2.

So, every support column 5 all links to each other through strengthening rib 4 and bearing support piece 3's outer peripheral face 31, can show the joint strength who improves casing 1 and bearing support piece 3, improves casing subassembly 104's support rigidity, and the structure is comparatively regular, the machine-shaping of being convenient for.

Of course, the number of the supporting columns 5 and the reinforcing ribs 4 may be different, or equal in number but not in one-to-one correspondence. Such as: a part of the reinforcing ribs 4 is not connected to the supporting column 5, but connected to the end surface 211 of the fixed impeller 2, which also enhances the supporting rigidity of the supporting support, thereby reducing the vibration of the casing assembly 104.

Further, an axial end of the reinforcing rib 4 facing the stationary impeller 2 is denoted as a first end 41, and an axial end of the reinforcing rib 4 facing away from the stationary impeller 2 is denoted as a second end 42, as shown in fig. 2. That is, the two axial ends of the reinforcing rib 4 are respectively a first end 41 and a second end 42, the first end 41 faces the fixed impeller 2 and is closer to the fixed impeller 2; the second end 42 faces away from the fixed impeller 2 and is further away from the fixed impeller 2.

The axial end of the support column 5 facing the stationary impeller 2 is designated a third end 54 and the axial end of the support column 5 facing away from the stationary impeller 2 is designated a fourth end 55, as shown in fig. 2. That is, two axial ends of the supporting column 5 are respectively denoted as a third end 54 and a fourth end 55, and the third end 54 faces the fixed impeller 2 and is closer to the fixed impeller 2; the fourth end 55 is remote from the fixed impeller 2, away from the fixed impeller 2.

Wherein the first end 41 of the reinforcing rib 4 is flush with the third end 54 of the corresponding connected supporting column 5. That is to say, strengthening rib 4 and support column 5 that link together are towards the axial end face 211 of deciding impeller 2 and are flushed, and this makes support column 5 comparatively regular with the connection structure of strengthening rib 4, the machine-shaping of being convenient for, and makes the inner structure of casing subassembly 104 regular relatively, is favorable to reducing the air current loss to improve electric fan 100's work efficiency. The first end 41 of the reinforcing bar 4 is made flush with the third end 54 of the corresponding support post 5, for example by injection moulding, or by machining.

Further, the axial height of the reinforcing ribs 4 is smaller than the axial height of the corresponding connected support columns 5, as shown in fig. 2. That is, the axial distance between the first and second ends 41, 42 of the reinforcing bars 4 is less than the axial distance between the third and fourth ends 54, 55 of the support column 5.

Therefore, the occupation of the reinforcing ribs 4 to the inner space of the machine shell 1 can be reduced, the stator assembly and the rotor assembly can be assembled conveniently, the blocking of the reinforcing ribs 4 to air flow can be weakened, the reduction of air flow loss is facilitated, the reduction of the product weight is facilitated, and the light weight of the electric fan 100 and the dust collector 200 is facilitated.

Further, the plurality of support columns 5 are divided into n groups, and the number of the support columns 5 in each group is m. n is the number of phases of the electric fan 100, the electric fan 100 includes a housing assembly 104, and m is a positive integer.

In this scheme, the total number of support columns 5 is mxn, is the integral multiple of electric fan 100 looks number, and the quantity is more, is favorable to improving electric fan 100's stability and reliability. Wherein, the structure of m support columns 5 of every group support column 5 can be identical completely, also can be not identical completely, also can be inconsistent completely, specifically can set up according to the product demand, and the position of m support columns 5 of every group support column 5 is not limited yet, can concentrate on adjacent setting in proper order together, also can disperse, sets up with the support column 5 of other groups is crisscross.

Of course, the total number of the supporting columns 5 may not be an integral multiple of the number of phases of the electric fan 100, for example, 4 supporting columns 5 are provided for a three-phase motor.

Further, at least part of the adjacent two reinforcing beads 4 are connected by the connecting bead 7, as shown in fig. 7.

In a plurality of strengthening ribs 4, be equipped with splice bar 7 between two adjacent strengthening ribs 4 of at least some, two adjacent strengthening ribs 4 are connected respectively at the both ends of splice bar 7, can improve the support rigidity of two adjacent strengthening ribs 4, and then improve the support rigidity of casing 1 subassembly.

Specifically, the number and position of the connecting ribs 7 can be adjusted as needed. Such as: the connecting ribs 7 can be arranged between all the adjacent reinforcing ribs 4; or in the case that the number of the reinforcing ribs 4 is even, the connecting ribs 7 may be arranged at intervals along the circumferential direction of the casing 1, as shown in fig. 7, that is, one reinforcing rib 4 is connected with only one connecting rib 7; alternatively, the tie bars 7 may be provided only between the relatively thin reinforcing bars 4 as required to increase the support rigidity thereof.

Alternatively, at least part of the adjacent two support columns 5 are connected by a connecting rib.

In a plurality of support columns 5, at least one part of two adjacent support columns 5 is provided with a connecting rib, and two ends of the connecting rib are respectively connected with the two adjacent support columns 5, so that the support rigidity of the two adjacent support columns 5 can be improved, the support rigidity of the casing assembly 104 is further improved, and the vibration of the casing assembly 104 is further weakened.

Of course, it is also possible that at least part of two adjacent supporting columns 5 are connected by the connecting rib 7, and at least part of two adjacent reinforcing ribs 4 are connected by the connecting rib 7.

In addition, splice bar, support column 5, strengthening rib 4 mutually support, divide into latticedly with the inner space of casing 1, also can play the water conservancy diversion effect to the air current to improve electric fan 100's work efficiency.

Such as: n groups of support columns 5 are distributed at intervals along the circumferential direction of the machine shell 1, m support columns 5 in each group of support columns 5 are sequentially connected through connecting ribs 7, and m is larger than or equal to 2.

And m is greater than or equal to 2, the number of each group of supporting columns 5 is at least two, which is beneficial to further improving the supporting rigidity of the casing assembly 104 and further reducing the vibration of the casing assembly 104. Simultaneously, m support columns 5 of every group support column 5 are concentrated together, and adjacent arrangement in proper order to a plurality of support columns 5 in every group support column 5 link to each other in proper order through splice bar 7, can further improve this group support column 5's stability, thereby further improve casing subassembly 104's support rigidity, further reduce casing subassembly 104's vibration.

Compare in all support columns 5 all link to each other through splice bar 7, this scheme has reduced the quantity of splice bar 7, is favorable to reducing the raw materials consumption, and reduction in production cost also is favorable to alleviateing casing 1 weight, is favorable to the lightweight of electric fan 100 and dust catcher 200.

Further, the connecting rib 7 is arc-shaped and is concentrically arranged with the housing 1.

The connecting ribs 7 are arc-shaped ribs and are matched with the shape of the casing 1, so that the internal structure of the product is regular, the reduction of air flow loss is facilitated, the working efficiency of the electric fan 100 is improved, and the electric fan is attractive.

Further, 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. 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, as shown in fig. 2, the connection hole 511 extends in the axial direction of the housing 1, as shown in fig. 2. 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 to a direction close to the third end 54 of the support column 5 and close to the central axis of the cabinet 1, as shown in fig. 2.

A fourth end 55 (i.e., an axial end far away from the fixed impeller 2) of a part of the plurality of support columns 5 is provided with a positioning step 51, so that the stator core can be positioned, and the assembly of the stator core is facilitated. 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.

And the rest of the supporting columns 5 are provided with inclined planes 52 at the fourth ends 55 (i.e. the axial ends far away from the fixed impeller 2), and since the inclined planes 52 extend obliquely towards the third ends 54 close to the supporting columns 5 and close to the central axis of the casing 1, the supporting columns 5 form a structure similar to the triangular reinforcing ribs 4 or the trapezoidal reinforcing ribs 4, which is beneficial to improving the rigidity and the strength of the casing 1.

Further, the supporting column 5 can be relatively thin, which is beneficial for saving cost.

Further, a plurality of support columns 5 are uniformly distributed along the circumferential direction of the casing 1, as shown in fig. 2, the structure is regular, and the processing and forming are facilitated.

Further, 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, as shown in fig. 1 and 2.

Thus, the casing 1 and the fixed impeller 2 can be directly connected, so that the casing 1 and the fixed impeller 2 can be mutually supported, the supporting rigidity of the casing assembly 104 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.

Specifically, the outer diameter of the stator impeller 2 is smaller than the inner diameter of the casing 1, as shown in fig. 1. The casing assembly 104 includes a fan housing 6, as shown in fig. 8 and 9, the fan housing 6 is sleeved outside the fixed impeller 2 and connected to the casing 1. The radially outer end of the support column 5 connecting the fixed impeller 2 is provided with an escape step 53, as shown in fig. 1. The avoidance step 53 includes a third step surface 531 and a fourth step surface 532, as shown in fig. 1, 8, and 9. The third step surface 531 extends in the axial direction of the casing 1 to be flush with the outer circumferential surface of the wheel body 21 of the fixed impeller 2, as shown in fig. 1, and a flow guide channel 63 is formed between the third step surface 531 and the wind cover 6, as shown in fig. 8 and 9. 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 12, as shown in fig. 1.

After the electric fan 100 is assembled, the casing 1 is connected to the fan housing, the fan housing is sleeved on the outer side of the fixed impeller 2, the airflow is sucked from the opening of the fan housing, flows to the fixed impeller 2 through the movable impeller 102, flows to the inner wall surface of the fan housing along the guide vanes 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 104.

Further, for the supporting column 5 directly connected to the end surface 211 of the fixed impeller 2, the avoiding step 53 is disposed 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 supporting column 5 and the inner wall surface of the fan housing and the inner wall surface of the casing 12, 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 12, so that the support pillar 5 is reliably connected with the housing 12.

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 211 of the wheel 21 far from the bearing support, and are distributed at intervals along a circumferential direction of the wheel 21 to form radial guide vanes, and a radial flow passage 61 is defined by the radial guide vanes and the fan housing 6 of the housing 1 assembly, as shown in fig. 1.

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.

Specifically, the guide vanes 22 may be disposed on the end surface 211 of the wheel body 21 away from the bearing support, and distributed in an annular array along the circumferential direction of the wheel body 21, so as to form radial guide vanes, 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 the air flow flows out of the stator impeller 2 along the radial direction to the inner wall surface of the fan housing 6, and then flows toward the casing 1 along the fan housing 6, that is, along the radial overflow channel 61 to the inner wall surface of the fan housing 6, and then flows toward the casing 1. 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.

Meanwhile, an overflowing gap is formed between the radial outer end of the radial guide vane and the fan cover 6, as shown in fig. 8.

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's work efficiency.

Further, the number of the reinforcing ribs 4 is plural, and the plural reinforcing ribs 4 are spaced apart from each other in the circumferential direction of the bearing support 3, as shown in fig. 2.

Therefore, the bearing support member 3 is supported by multiple parts, and the connection strength and mutual supporting effect of the bearing support member 3 and the machine shell 1 can be obviously improved, so that the rigidity of the machine shell assembly 104 is further improved, and the vibration of the machine shell assembly 104 is further weakened. Further, a plurality of reinforcing ribs 4 are uniformly distributed along the circumferential direction of the bearing support 3.

Wherein at least a part of the plurality of reinforcing ribs 4 extends along the axial direction of the casing assembly 104 to be connected with the end surface 211 of the fixed impeller 2, as shown in fig. 1.

Can realize strengthening rib 4 and fixed impeller 2's lug connection like this for bearing support piece 3 can better support each other with fixed impeller 2, thereby further improve bearing support piece 3's support rigidity, further improve fixed impeller 2's stability.

Compared with the mode that all the reinforcing ribs 4 are consistent in structure, a part of the plurality of reinforcing ribs 4 are connected with the end face 211 of the fixed impeller 2, so that the size of part of the reinforcing ribs 4 can be reduced, the weight of a product is reduced, and the consumption of raw materials is reduced.

Further, the casing 1, the fixed impeller 2 and the bearing support 3 are integrally formed.

Casing 1, decide impeller 2 and bearing support piece 3 be integrated into one piece's integral type structure, and existing joint strength who is favorable 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.

Example two

The difference from the first embodiment is that: the guide vanes 22 are disposed on the outer circumferential surface of the wheel 21, as shown in fig. 5 and 6, and are distributed at intervals along the circumferential direction of the wheel 21 to form axial guide vanes, and the axial guide vanes and the wind cover 6 of the casing assembly 104 enclose the axial flow passage 62. In other words, the guide vanes 22 of the stator wheel 2 are located on the circumferential surface of the wheel body 21 and distributed in an annular array.

Thus, the axial guide vane is formed, the gap between the axial ends of the axial guide vane forms an air inlet, and the gap between the axial outer ends forms an air outlet, so that the airflow axially flows out of the fixed vane wheel to reach the inner wall surface of the fan housing 6, then flows towards 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 towards the casing 1. 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.

Meanwhile, the radially outer end of the axial guide vane is in contact with the fan housing 6, as shown in fig. 9.

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 casing 1, therefore make axial guide vane's radial outer end and fan housing 6 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.

EXAMPLE III

The difference from the first embodiment is that: an escape space 11 is provided between each of the plurality of reinforcing ribs 4 and the fixed impeller 2, as shown in fig. 3 and 4.

That is to say, all links to each other with the terminal surface 211 of the unsteady impeller 2 in the strengthening rib 4, can reduce stopping to the air current, is favorable to reducing the air current loss, improves electric fan 100's work efficiency.

Example four

The difference from any of the above embodiments is that: an escape space 11 is provided between a part of the plurality of reinforcing ribs 4 and the casing 1.

That is, the plurality of reinforcing ribs 4 are not all directly connected to the casing 1, but a part of the plurality of reinforcing ribs does not extend to be connected to the supporting posts 5 or the housing 12 of the casing 1, so that the bearing support member 3 can be reinforced, the blocking of the air flow can be reduced, and the work efficiency of the electric fan 100 can be improved.

EXAMPLE five (not shown)

The difference from the first embodiment is that: the number of the supporting columns 5 is larger than that of the reinforcing ribs 4.

In this way, a part of the supporting columns 5 is correspondingly connected with the reinforcing ribs 4, and another part of the supporting columns 5 is not correspondingly connected with the reinforcing ribs 4, and the part of the supporting columns 5 can improve the supporting rigidity of the casing 1, thereby weakening the vibration of the casing assembly 104.

EXAMPLE six (not shown)

The difference from the first embodiment is that: the number of the supporting columns 5 is less than that of the reinforcing ribs 4.

Thus, a part of the reinforcing ribs 4 is connected correspondingly to the supporting columns 5. Another part of the reinforcing ribs 4 is not correspondingly connected with the supporting columns 5, and the part of the reinforcing ribs 4 can improve the supporting rigidity of the bearing support 3, thereby weakening the vibration of the casing assembly 104.

EXAMPLE seven

The difference from the first embodiment is that: the first end 41 of the reinforcing rib 4 protrudes out of the third end 54 of the corresponding connected supporting column 5 along the axial direction of the machine shell 1.

In this embodiment, the axial end faces of the reinforcing ribs 4 and the supporting columns 5 which are connected together towards the fixed impeller 2 are uneven, and the first ends 41 of the reinforcing ribs 4 axially protrude out of the third ends 54 of the supporting columns 5, that is, the axial distance between the first ends 41 of the reinforcing ribs 4 and the fixed impeller 2 is smaller than the axial distance between the third ends 54 of the supporting columns 5 and the fixed impeller 2, so that the supporting rigidity of the part of the bearing support piece close to the fixed impeller 2 is improved, and the stability of the fixed impeller 2 is improved. And when the first end 41 of the reinforcing rib 4 extends to be connected with the end surface of the fixed impeller 2, the connection reliability of the fixed impeller 2 and the bearing support member can be further improved, and the support rigidity of the casing assembly 104 can be further improved.

Example eight

The difference from the seventh embodiment is that: the third end 54 of the support column 5 protrudes from the first end 41 of the corresponding connected reinforcing rib 4 along the axial direction of the machine shell 1.

That is to say, the axial distance between the third end 54 of the supporting column 5 and the fixed impeller 2 is smaller than the axial distance between the first end 41 of the reinforcing rib 4 and the fixed impeller 2, which is favorable for improving the supporting rigidity of the part of the casing 1 close to the fixed impeller 2 and the connection reliability of the casing 1 and the fan housing. And when the third end 54 of the supporting column 5 extends to be connected with the end surface of the fixed impeller 2, the fixed impeller 2 is directly connected with the casing 1, and the supporting rigidity of the casing assembly 104 can be further improved.

Example nine

An electric fan 100, as shown in fig. 10, comprising: the casing assembly 104 and the impeller 102 as in any of the previous embodiments. Wherein, the movable impeller 102 is matched with the fixed impeller 2 of the casing assembly 104.

The electric blower 100 provided in this embodiment includes the enclosure assembly 104 according to any one of the above embodiments, so that all the advantages of any one of the above embodiments are provided, and no further description is provided herein.

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 ten

A vacuum cleaner 200, as shown in fig. 11, comprising: the electric blower 100 and the cleaner body 202 according to the above technical solution. The electric blower 100 is provided on the cleaner body 202.

The vacuum cleaner 200 provided by the present technical solution has all the beneficial effects of any one of the above technical solutions because it includes the electric blower 100 of the above technical solution, and is not described herein again.

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 vibration damper housing assembly 104 includes a housing 1, a stator 2 and a bearing support 3. The casing 1 is cylindrical in shape and has support columns 5 projecting radially inward of the inner wall. The stator impeller 2 includes a wheel body 21 and guide vanes 22 provided on the wheel body 21, and an end surface 211 of the wheel body 21 has a bearing support member 3 with a center hole axially projecting toward the housing 1 side. The outer peripheral surface 31 of the bearing support 3 is directly connected with at least part of the support column 5 protruding from the inner wall of the casing 1.

In the whole casing assembly 104, the bearing support member 3 is used for installing the positioning bearing, the stress is the largest, and the casing assembly 104 structure provided by the example has the advantages that the support columns 5 on the casing 1, the bearing support member 3 and the fixed impeller 2 are connected into a whole to form a mutually supported structure, so that the support rigidity of the casing assembly 104 is greatly enhanced, and the vibration of the motor is reduced. Meanwhile, the fixed impeller 2 and the casing 1 are connected into a whole, so that the assembly process is simplified.

Further, the number of the support columns 5 is m × n, and n is the number of motor phases.

Wherein at least one support column 5 of each set of support columns 5 is directly connected to the outer circumferential surface 31 of the bearing support 3.

Specifically, the reinforcing rib 4 is at least partially axially connected with the end surface 211 of the wheel body 21 of the fixed impeller 2. With this arrangement, the housing assembly 104 will be more rigid and will vibrate less.

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

Further, the entire chassis assembly 104 is integrally formed.

Concrete example 2

The differences from the specific example 1 are: the reinforcing ribs 4 are not connected with the end surface 211 of the wheel body 21 of the fixed impeller 2.

Specific example 3

The difference from the specific example 2 is: the guide vanes 22 of the fixed impeller 2 are positioned on the circumferential surface of the wheel body 21 and distributed in an annular array.

The above-mentioned housing assembly 104 has the following advantages:

the bearing support 3 is directly connected with the casing 1 and has the characteristics of strong support rigidity and small vibration. Meanwhile, the fixed impeller 2 and the casing 1 are integrated, so that the assembly process is simplified, the manufacturing cost is reduced, the assembly error is reduced, and the product performance is more stable.

The casing 1, the fixed impeller 2 and the bearing support member 3 are connected together through a reasonable support structure design to form a mutually supporting structure, so that the rigidity of the structural member of the electric fan 100 is enhanced, and the assembly process of the electric fan 100 is simplified.

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

Fig. 1 illustrates a schematic structural diagram of the cabinet assembly 104 of specific example 1. The housing assembly 104 in this example comprises a housing 1, a stator vane 2 and a bearing support 3. The casing 1 is cylindrical in shape and has support columns 5 projecting radially inward of the inner wall. The stator impeller 2 is located above the casing 1, and includes a wheel body 21 and guide vanes 22 disposed on the wheel body 21, and the guide vanes 22 are arranged in an annular array on an end surface 211 of the wheel body 21. The bearing support 3 is connected with the supporting column 5 of the machine shell 1 below the wheel body 21.

Fig. 2 is a schematic view of the casing assembly 104 shown in fig. 1, viewed from the bottom, wherein the supporting column 5 is connected to the bearing support 3 via the reinforcing rib 4, and a portion of the reinforcing rib 4 extends axially to the end surface 211 of the wheel body 21 of the fixed impeller 2, so as to connect the casing 1, the bearing chamber 32 support and the fixed impeller 2 into a whole, thereby enhancing the rigidity of the support of the casing 1.

Fig. 3 illustrates a structural diagram of the cabinet assembly 104 of specific example 2. The reinforcing ribs 4 are different from the specific example 1 only in connecting the housing 1 and the bearing support 3. As can be seen from the side view of fig. 4, the support ribs do not extend axially to the bottom surface of the wheel body 21. The solution is less rigid than the specific example 1, but the fan efficiency is higher than the specific example 1.

Fig. 5 illustrates a schematic diagram of the enclosure assembly 104 of specific example 3. Unlike the specific example 1, the guide vanes 22 on the fixed impeller 2 are arranged in an annular array along the circumferential direction of the wheel body 21, and this scheme can shorten the axial distance of the fan.

Fig. 6 is a side view of fig. 5, and the reinforcing ribs 4 between the bearing support 3 and the supporting posts 5 axially extend to the lower bottom surface of the wheel body 21 of the fixed impeller 2, which effectively improves the rigidity of the casing assembly 104.

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. 4, 6, 8 and 9 of the present application, the fixed impeller is located above the casing, and the air flow 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 housing assembly provided by the invention, the reinforcing rib is additionally arranged between the bearing support piece and the housing, the bearing support piece and the housing are connected through the reinforcing rib, and the bearing support piece is directly connected with the end face of the fixed impeller, so that the housing, the bearing support piece and the fixed impeller are connected into a whole to form a mutually supporting structure, the supporting rigidity of the housing assembly is greatly enhanced, the vibration of the whole housing assembly is reduced, the vibration of the electric fan is reduced, the user experience is improved, and the service life of the electric fan and the service life of the whole dust collector are prolonged.

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

1. A chassis assembly, comprising:

a housing;

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

2. The cabinet assembly of claim 1, wherein the cabinet comprises:

a housing; and

the supporting column is arranged on the inner wall surface of the shell, one end of the reinforcing rib is connected with the outer peripheral surface of the bearing supporting piece, and the other end of the reinforcing rib is connected with the supporting column.

3. The cabinet assembly according to claim 2,

the number of the supporting columns is multiple, and the supporting columns are arranged at intervals along the circumferential direction of the shell;

the number of the supporting columns is equal to that of the reinforcing ribs, and the supporting columns and the reinforcing ribs are in one-to-one correspondence and connected; or the number of the supporting columns is larger than that of the reinforcing ribs; or the number of the supporting columns is smaller than that of the reinforcing ribs.

4. The cabinet assembly according to claim 3,

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

the first end of the reinforcing rib is flush with the third end of the supporting column which is correspondingly connected; or the first end of the reinforcing rib protrudes out of the third end of the supporting column correspondingly connected along the axial direction of the shell; or the third end of the supporting column protrudes out of the first end of the reinforcing rib correspondingly connected along the axial direction of the shell.

5. The cabinet assembly according to claim 3,

the axial height of the reinforcing ribs is smaller than that of the support columns which are correspondingly connected.

6. The cabinet assembly according to claim 3,

at least part of two adjacent support columns are connected through connecting ribs; and/or

At least part of two adjacent reinforcing ribs are connected through connecting ribs.

7. The cabinet assembly according to claim 6,

the connecting ribs are arc-shaped and are arranged concentrically with the shell.

8. The cabinet assembly according to claim 3,

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 3,

at least one part of the support columns extends along the axial direction of the casing to be connected with the end face of the fixed impeller.

10. The cabinet assembly according to claim 9,

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.

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

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 far away from the bearing support part and are distributed at intervals along the circumferential direction of the wheel body to form radial guide vanes, and a radial overflowing channel is defined by the radial guide vanes and a fan cover of the shell component; 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.

12. The cabinet assembly according to claim 11,

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.

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

the number of the reinforcing ribs is multiple, and the plurality of reinforcing ribs are distributed at intervals along the circumferential direction of the bearing support piece;

at least one part of the reinforcing ribs extends along the axial direction of the casing assembly to be connected with the end face of the fixed impeller; or an avoidance space is arranged between the plurality of reinforcing ribs and the fixed impeller.

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

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

15. An electric fan, comprising:

the enclosure assembly of any one of claims 1 to 14;

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

16. A vacuum cleaner, comprising:

the electric fan of claim 15;

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