CN114109863B - Casing assembly, electric fan and electric appliance - Google Patents
Casing assembly, electric fan and electric appliance Download PDFInfo
- Publication number
- CN114109863B CN114109863B CN202010881367.4A CN202010881367A CN114109863B CN 114109863 B CN114109863 B CN 114109863B CN 202010881367 A CN202010881367 A CN 202010881367A CN 114109863 B CN114109863 B CN 114109863B
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- Prior art keywords
- impeller
- blades
- blade
- shell
- casing
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 24
- 238000009434 installation Methods 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 17
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 239000003292 glue Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
- F04D29/444—Bladed diffusers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The application provides a casing subassembly, electric fan and electric appliance, the casing subassembly includes: the impeller comprises an impeller body, wherein a plurality of first blades are arranged on the outer edge of the upper surface of the impeller body at intervals along the circumferential direction, a hollow cylinder body is arranged on the lower surface of the impeller body, and a shaft hole is formed in the middle of the impeller body; a shell which is cylindrical and is internally provided with a bearing chamber which is matched with the shaft hole; one end of the bearing chamber is sleeved in the shaft hole, the cylinder body extends into the shell, a cavity is formed between the outer peripheral wall of the cylinder body and the inner peripheral wall of the shell, and the cavity is communicated with a channel between two adjacent first blades. The utility model provides a casing subassembly through set up the barrel in its impeller bottom surface, has avoided the air current flow direction casing's that flows from each fluid outlet of impeller middle part, has effectively solved the problem that air current is to casing middle part diffusion in the wind channel structure, and corresponding motor efficiency is high, wind-force is big.
Description
Technical Field
The application belongs to the technical field of household appliances, and more particularly relates to a shell assembly, an electric fan and an electric appliance.
Background
High efficiency and high suction have been the technical point of attention and pursuit of motors for the vacuum cleaner field. The air duct structure of the motor for the dust collector can introduce air flow into the shell or the semi-closed shell blade through the diffuser, so that a part of air flow flows to the middle part of the shell, and the air flow is diffused to the middle part in the shell.
Disclosure of Invention
An object of the embodiment of the application is to provide a casing subassembly to solve the technical problem that exists among the prior art because the diffuser introduces the casing middle part diffusion with the air current, and then restrict the improvement of motor efficiency, motor suction is difficult to satisfy the user demand.
In order to achieve the above purpose, the technical scheme adopted in the application is as follows: there is provided a cabinet assembly comprising:
the impeller comprises an impeller body, wherein a plurality of first blades are arranged on the outer edge of the upper surface of the impeller body at intervals along the circumferential direction, a hollow cylinder body is arranged on the lower surface of the impeller body, and a shaft hole is formed in the middle of the impeller body;
the shell is cylindrical and is connected with the impeller body, and a bearing chamber matched with the shaft hole is arranged in the shell;
one end of the bearing chamber is sleeved in the shaft hole, the cylinder body stretches into the shell, a cavity is formed between the outer peripheral wall of the cylinder body and the inner peripheral wall of the shell, and the cavity is communicated with the channels between the adjacent two first blades.
In one embodiment, a plurality of second blades are circumferentially arranged in the chamber at intervals, and a radially closed and axially communicated air channel is defined between the outer peripheral wall of the cylinder body and the second blades.
In one embodiment, the outer peripheral wall of the cylinder is in contact with the inner side surface of the second blade.
In one embodiment, a gap is formed between two adjacent first blades on the periphery of the impeller body, so that a channel between two adjacent first blades is communicated with the air duct.
In one embodiment, the length of the cylinder exceeds at least 2/3 of the length of the second blade in a direction parallel to the axis of the impeller body.
In one embodiment, the upper surface and the lower surface of the second blade are both convex cambered surfaces.
In one embodiment, the outer side and the inner side of the second blade are both convex cambered surfaces.
In one embodiment, one end of the second blade, which is close to the lower surface of the impeller body, extends out of the casing and extends to an axial extension surface position of the peripheral wall of the casing.
In one embodiment, the second blade is disposed obliquely with respect to the direction of the central axis of the housing, and the second blade has a mounting angle opposite to the mounting angle of the first blade.
In one embodiment, ribs are respectively arranged between the outer peripheral wall of the bearing chamber and each second blade, clamping grooves matched with the ribs are respectively formed in positions, corresponding to the ribs, of the cylinder body, and the cylinder body is clamped and fixed on the ribs through the clamping grooves.
In one embodiment, a supporting table surface is formed at one end of the rib close to the outer peripheral wall of the bearing chamber, a convex ring is axially formed on the lower surface of the impeller body in an extending mode at the shaft hole, and the convex ring abuts against the supporting table surface.
In one embodiment, the height of the ribs decreases progressively in a direction radially outward of the central axis of the housing.
In one embodiment, the second blade includes a head portion and a root portion connected to the rib, and the thickness of the second blade gradually decreases from the root portion to the head portion.
Another object of the present application is to provide an electric fan comprising the above housing assembly.
It is still another object of the present application to provide an electric appliance including the above electric blower.
In one embodiment, the electric appliance is a vacuum cleaner, a hand dryer, a fan, an air pump, an air cleaning device, a range hood, or a centrifugal pump.
The beneficial effect of the casing subassembly that this application provided lies in: compared with the prior art, the shell component has the advantages that the barrel is arranged on the bottom surface of the impeller, so that the air flow flowing out of each fluid outlet of the impeller flows to the middle of the shell, the problem that the air flow diffuses to the middle of the shell in the air duct structure is effectively solved, the corresponding motor is high in efficiency, and the wind power of the electric fan with the shell component is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a chassis assembly according to an embodiment of the present disclosure;
FIG. 2 is a perspective view of an impeller in the housing assembly of FIG. 1;
FIG. 3 is a perspective view of a housing of the housing assembly of FIG. 1;
fig. 4 is a schematic view of the structure of the housing assembly shown in fig. 1 mounted on an electric fan.
Wherein, each reference sign in the figure:
10-a housing assembly; 11-an impeller; 100-impeller body; 200-a shell; 300-fan housing; 400-moving the impeller; 500-a driving mechanism; 101-shaft holes; 102-a convex ring; 103-annular face; 104-notch; 110-a first blade; 111-fluid inlet; 112-fluid outlet; 113-channel; 120-cylinder; 121-a clamping groove; 201-an air duct; 202-a ventilation slot; 203-an air outlet; 210-bearing chamber; 220-a second blade; 230-ribs; 211-a glue groove; 221-upper surface; 222-lower surface; 223-outer side; 224-inner side; 225-root; 226-head; 231-supporting the table top; 301-an air inlet; 410-a rotor blade wheel base; 420-moving blades; 510-a circuit board; 520-motor; 521-stator assembly; 522-a rotor assembly; 523-spindle; 524-magnetic ring; 525-bearings.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 to 3, a housing assembly 10 according to an embodiment of the present application will be described. The casing assembly 10 includes an impeller 11 and a casing 200 connected together, and the casing assembly 10 may be an integrally formed structure or a split structure assembled and fixed by the impeller 11 and the casing 200.
The impeller 11 comprises an impeller body 100, a plurality of first blades 110 are arranged on the outer edge of the upper surface of the impeller body 100 at intervals along the circumferential direction, a hollow cylinder 120 is arranged on the lower surface of the impeller body 100, the cylinder 120 and the impeller body 100 are coaxially distributed, and a shaft hole 101 is formed in the middle of the impeller body 100. The first blade 110 may be a planar or curved blade; the plurality of first blades 110 may be uniformly spaced on the annular surface 103 of the periphery of the impeller body 100, and a horizontal plane of an outer edge of the annular surface 103 is lower than a horizontal plane of an inner edge of the annular surface 103. The adjacent two first vanes 110 form a fluid inlet 111 at the inner edge, the adjacent two first vanes 110 form a fluid outlet 112 at the outer edge, and a channel 113 for fluid communication is formed between the adjacent two first vanes 110. By setting the outer edge of the annular surface 103 lower than the inner edge of the annular surface 103, the fluid can spread obliquely downward along the annular surface 103 on the lower side after entering the channel 113 formed by the first vane 110, thereby facilitating the promotion of the pressure expansion capability and the flow guiding effect.
The casing 200 may be an injection molding piece, the casing 200 is cylindrical, and the casing 200 is connected with the impeller body 100; the inside of the casing 200 is provided with a bearing chamber 210 adapting to the shaft hole 101, a bearing at one end of a rotating shaft is arranged in the bearing chamber 210, a glue-containing groove 211 is formed in the inner wall of the bearing chamber 210, and the bearing chamber 210 are in transition fit and are adhered and fixed by adopting thermosetting glue.
One end of the bearing chamber 210 is sleeved in the shaft hole 101, the cylinder 120 extends into the casing 200, a chamber is formed between the outer peripheral wall of the cylinder 120 and the inner peripheral wall of the casing 200, and the chamber is communicated with the channels 113 between two adjacent first blades 110. That is, the cylinder 120 at the bottom of the impeller body 100 plays a role of blocking the airflow to the middle of the casing 200, preventing the airflow from diffusing to the middle of the casing 200, improving the efficiency of the corresponding motor, and improving the wind power of the air outlet.
Compared with the prior art, the shell assembly 10 provided by the application has the advantages that the cylinder 120 is arranged on the bottom surface of the impeller body 100, so that the air flow flowing out of each fluid outlet 112 of the impeller 11 is prevented from flowing to the middle of the shell 200, the problem that the air flow diffuses to the middle of the shell 200 in the air duct structure is effectively solved, the corresponding motor is high in efficiency, and the wind power of the electric fan with the shell assembly 10 is effectively improved.
In an embodiment, as shown in fig. 1 to 3, a plurality of second blades 220 are circumferentially spaced between the outer circumferential wall of the cylinder 120 and the inner circumferential wall of the casing 200, the plurality of second blades 220 may be uniformly distributed along the circumferential direction of the inner side of the casing 200, the number of second blades 220 may be set smaller than the number of first blades 110, and the installation angle of the second blades 220 is opposite to the installation angle direction of the first blades 110. The outer peripheral wall of the cylinder 120 may be spaced from the inner side 224 of the second vane 220 or may be in contact with both. The outer peripheral wall of the cylinder 120 and the second blades 220 define a radially closed, axially conductive air channel 201 therebetween, and the air channel 201 communicates with the channels 113 between two adjacent first blades 110.
In one embodiment, as shown in fig. 1, the outer peripheral wall of the cylinder 120 contacts the inner side 224 of the second vane 220, so that the fluid flows in the defined air duct 201 more regularly, and the turbulence is reduced.
In one embodiment, as shown in fig. 1, a notch 104 is formed between two adjacent first blades 110 on the periphery of the impeller body 100, so that a channel 113 between two adjacent first blades 110 is communicated with the air duct 201. The first blades 110 have a blade leading edge disposed at the fluid inlet 111 and a blade trailing edge disposed at the fluid outlet 112, respectively. The vane trailing edges of the first vanes 110 are arranged to extend out of the barrel 120 relative to the lower surface, and the annular surface 103 defines a gap 104 between the outer edges of two adjacent first vanes 110, such that the fluid outlet 112 between the outer edges of two first vanes 110 communicates with the air duct 201 through the gap 104.
The vane leading edge and/or vane trailing edge may be disposed at a spatial incline with respect to the axis of the annular base, such that by disposing the outer edge of the first vane 110 at an incline, impact losses at the fluid outlet 112 and/or fluid inlet 111 may be reduced, and an effect of improving the pressure expansion capability may be achieved.
In an embodiment, the length of the cylinder 120 is at least 2/3 longer than the length of the second blades 220 in the direction parallel to the axis of the impeller body 100, so that a long air channel 201 can be formed between the impeller body 100 and the casing 200 in the axial direction to ensure the air volume.
In an embodiment, referring to fig. 3, the upper surface 221 and the lower surface 222 of the second blade 220 are both convex cambered surfaces, so that the flow guiding effect of the second blade 220 is better, and the fluid can flow more smoothly along the second blade 220.
In an embodiment, referring to fig. 3, the outer side 223 and the inner side 224 of the second vane 220 are both convex cambered surfaces, so that the flow guiding effect of the second vane 220 is better, and the fluid can flow more smoothly along the second vane 220. At least a portion of the inner side 224 of the body may be configured as an arc surface matching the outer circumferential wall of the body, and the arc surface of the inner side 224 is attached to the outer circumferential wall of the body 120, so that the flow guiding effect can be further improved.
In an embodiment, referring to fig. 1 and 3, one end of the second blade 220 near the lower surface of the impeller body 100 extends out of the casing 200 and extends to an axial extension surface position of the peripheral wall of the casing 200, that is, the top of the second blade 220 extends out of the casing 200, and the outer side surface of the extending portion extends to an axial extension surface position of the peripheral wall of the casing 200, so that the assembly between the motor housing and the casing 200 is not affected, and the air volume is increased for expanding the air duct 201.
In an embodiment, referring to fig. 3, the second blades 220 are disposed obliquely with respect to the direction of the central axis of the casing 200, each of the second blades 200 is inclined in the same direction, and the installation angle of the second blades 220 is opposite to the installation angle of the first blades 110, i.e. the rotation directions of the second blades are opposite. Through the slope setting of second blade 220, reserve more spaces for wind channel 201, and then can promote the amount of wind.
In an embodiment, referring to fig. 1 and 3, ribs 230 are respectively disposed between the outer peripheral wall of the bearing chamber 210 and each second blade 220, and clamping grooves 121 adapted to the ribs 230 are respectively formed at positions of the cylinder 120 corresponding to each rib 230, and the cylinder 120 is clamped on the ribs 230 through the clamping grooves 121. The two adjacent ribs 230 and the two second blades 220 together enclose the ventilation slot 202, the number of the ribs 230 is equal to the number of the second blades 220, and the width of the ribs 230 can be set according to the actual application requirement of the motor. When the impeller 11 is mounted, the shaft hole 101 is aligned with the bearing chamber 210, the bearing chamber 210 is inserted into the shaft hole 101, the impeller 11 is rotationally adjusted, and the clamping grooves 121 of the cylinder 120 are clamped into the corresponding ribs 230, so that the impeller 11 and the casing 200 are assembled, and the operation is simple.
In an embodiment, referring to fig. 1 to 3, a supporting table 231 is formed at one end of the rib 230 near the outer peripheral wall of the bearing chamber 210, a space is provided between the supporting table 231 and the top end surface of the bearing chamber 210, a convex ring 102 is formed on the lower surface of the impeller body 100 by extending axially at the shaft hole 101, the convex ring 102 abuts against the supporting table 231, and after the impeller body 11 and the casing 200 are assembled, the bottom end surface of the convex ring 102 on the lower surface of the impeller body 100 abuts against each supporting table 231, thus facilitating assembly and avoiding shaking during assembly of the impeller 11.
In an embodiment, referring to fig. 3, the height of the ribs 230 is gradually reduced along the radial outward direction of the central axis of the casing 200, so that the ribs 230 have high connection strength with the outer peripheral wall of the bearing chamber 210, and the ribs 230 can withstand the operation of high rotation speed of the motor, which is safe and reliable.
In one embodiment, referring to FIG. 3, the second blade 220 includes a root 225 and a head 226 connected, the root 225 being connected to a rib 230, the thickness of the second blade 220 decreasing from the root 225 to the head 226. In this way, one surface of each second blade 220 can form a good guide surface, and the space occupied by each second blade 220 can be reduced. The inner and outer sides of the second blade 220 are cambered surfaces, and the upper and lower sides are cambered surfaces, so that when the corner of the head 226 is smoothly transited, the wind resistance is reduced, and the loss of kinetic energy is reduced.
Referring to fig. 1, 2 and 4, an electric fan according to an embodiment of the present application includes a housing assembly 10 according to the above embodiment. By arranging the casing assembly 10 in the embodiment, the problem that air flow diffuses towards the middle of the casing 200 in the air duct structure can be effectively solved, and the motor has high efficiency and large wind power.
The electric fan further comprises a fan housing 300, a movable impeller 400 and a driving mechanism 500, wherein an air inlet 301 is formed at one end of the fan housing 300, and an air outlet 203 is formed at one end of the machine shell 200 away from the fan housing 300; one end of the fan housing 300 near the air outlet 203 is sleeved and clamped with the machine shell 200, the driving mechanism 500 comprises a circuit board 510 and a motor 520, the motor 520 is electrically connected with the circuit board 510, and the circuit board 510 is provided with leads (not shown) for connecting with an external power supply. The motor 520 comprises a stator assembly 521 and a rotor assembly 522, the rotor assembly 522 comprises a rotating shaft 523 and a magnetic ring 524 arranged on the rotating shaft 523, a bearing 525 is fixed on the rotating shaft 523 of the rotor assembly 522, the outer diameter of the magnetic ring 524 is smaller than that of the bearing 525, the magnetic ring 524 is arranged on one side far away from the movable impeller 400, and the bearing 525 is arranged in the bearing chamber 210; the impeller 400 includes a impeller base 410 and a plurality of moving blades 420 provided on an outer circumferential wall of the impeller base 410, and a rotating shaft 523 is fixedly coupled to the impeller base 410 through the bearing chamber 210.
The circuit board 510 is installed at one end of the motor 520 far away from the fan housing 300, a plurality of connecting posts are arranged on the rack of the electric fan, and the circuit board 510 and the connecting posts are fixed by screws. The two ends of the bearing chamber 210 are opened, the rotating shaft 523 penetrates through the bearing 525 to be connected and fixed with the movable impeller 400, and after the circuit board 510 is electrified, the stator assembly 521 drives the rotor assembly 522 to rotate, and the movable impeller 400 is driven to rotate in the fan housing 300 through the rotating shaft 523. The circuit board 510 is completely exposed out of the rack, so that the wiring operation of the lead wires is facilitated, and the heat dissipation of the circuit board 510 is also facilitated; the circuit board 510 is spaced from the air outlet 203 to prevent the circuit board 510 from blocking the air outlet 203.
The electric appliance provided by the embodiment of the application comprises the electric fan of the embodiment. Through setting up the electric fan of above-mentioned embodiment, can effectively solve the problem that the air current is diffused to casing 200 middle part in the wind channel structure, motor efficiency is high, and wind-force is big.
In one embodiment, the electric appliance may be, but is not limited to, a vacuum cleaner, a hand dryer, a fan, an air pump, an air cleaning device, a range hood or a centrifugal pump, but may be any other device that utilizes the pressure and kinetic energy of a gas generated by an electric fan.
The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.
Claims (14)
1. A housing assembly, characterized by: comprising the following steps:
the impeller comprises an impeller body, a plurality of first blades are circumferentially arranged on an annular surface of the outer edge of the upper surface of the impeller body at intervals, the plane of the outer edge of the annular surface is lower than the plane of the inner edge of the annular surface, a hollow cylinder body is arranged on the lower surface of the impeller body, and a shaft hole is formed in the middle of the impeller body;
the shell is cylindrical and is connected with the impeller body, and a bearing chamber matched with the shaft hole is arranged in the shell;
one end of the bearing chamber is sleeved in the shaft hole, the cylinder body stretches into the shell, a cavity is formed between the outer peripheral wall of the cylinder body and the inner peripheral wall of the shell, and the cavity is communicated with a channel between two adjacent first blades, so that the cylinder body on the bottom surface of the impeller body plays a role in blocking airflow to the middle of the shell;
a plurality of second blades are arranged in the cavity at intervals along the circumferential direction, and a radial closed and axial communicated air channel is defined between the outer circumferential wall of the cylinder body and the second blades;
the periphery of the impeller body is provided with a notch between two adjacent first blades, so that a channel between the two adjacent first blades is communicated with the air duct.
2. The cabinet assembly of claim 1, wherein: the outer peripheral wall of the cylinder body is contacted with the inner side surface of the second blade.
3. The cabinet assembly of claim 1, wherein: the length of the cylinder body is at least 2/3 longer than the length of the second blade in the direction parallel to the axis of the impeller body.
4. The cabinet assembly of claim 1, wherein: the upper surface and the lower surface of the second blade are both upwardly convex cambered surfaces.
5. The cabinet assembly of claim 1, wherein: the outer side surface and the inner side surface of the second blade are both convex cambered surfaces.
6. The cabinet assembly of claim 1, wherein: one end of the second blade, which is close to the lower surface of the impeller body, extends out of the casing and extends to the axial extension surface position of the peripheral wall of the casing.
7. The cabinet assembly of claim 1, wherein: the second blades are obliquely arranged relative to the direction of the central shaft of the shell, and the installation angle of the second blades is opposite to the installation angle of the first blades.
8. The chassis assembly of any of claims 1-7, wherein: ribs are respectively arranged between the outer peripheral wall of the bearing chamber and each second blade, clamping grooves matched with the ribs are respectively formed in positions, corresponding to the ribs, of the cylinder body, and the cylinder body is clamped on the ribs through the clamping grooves.
9. The cabinet assembly of claim 8, wherein: the one end that the rib is close to the outdoor perisporium of bearing is formed with the supporting table face, the lower surface of impeller body in shaft hole department axial extension is formed with the bulge loop, the bulge loop supports and leans on the supporting table face.
10. The cabinet assembly of claim 8, wherein: the height of the ribs gradually decreases along the radial outward direction of the central axis of the casing.
11. The cabinet assembly of claim 8, wherein: the second blade comprises a head and a root which are connected, the root is connected with the rib, and the thickness of the second blade gradually decreases from the root to the head.
12. An electric fan, characterized in that: a chassis assembly comprising any of claims 1-11.
13. An electric appliance, characterized in that: comprising an electric fan as claimed in claim 12.
14. The electrical appliance of claim 13, wherein: the electric appliance is a dust collector, a hand drier, a fan, an air pump, air cleaning equipment, a range hood or a centrifugal pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010881367.4A CN114109863B (en) | 2020-08-27 | 2020-08-27 | Casing assembly, electric fan and electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010881367.4A CN114109863B (en) | 2020-08-27 | 2020-08-27 | Casing assembly, electric fan and electric appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114109863A CN114109863A (en) | 2022-03-01 |
| CN114109863B true CN114109863B (en) | 2024-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010881367.4A Active CN114109863B (en) | 2020-08-27 | 2020-08-27 | Casing assembly, electric fan and electric appliance |
Country Status (1)
| Country | Link |
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| CN (1) | CN114109863B (en) |
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| JP2007240075A (en) * | 2006-03-09 | 2007-09-20 | Matsushita Electric Ind Co Ltd | Heat transport device, and liquid cooling system using the same |
| CN206221315U (en) * | 2016-11-23 | 2017-06-06 | 广东威灵电机制造有限公司 | Blower fan |
| CN108736648A (en) * | 2018-08-01 | 2018-11-02 | 苏州工业园区星德胜电机有限公司 | Motor of dust collector component |
| CN210290212U (en) * | 2019-08-09 | 2020-04-10 | 美的威灵电机技术（上海）有限公司 | Fan and electrical equipment |
| KR102141610B1 (en) * | 2019-04-19 | 2020-08-06 | 엘지전자 주식회사 | Fan Motor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019024276A (en) * | 2017-07-21 | 2019-02-14 | 日本電産株式会社 | Notor, blower, and cleaner |
| JP2018193940A (en) * | 2017-05-18 | 2018-12-06 | 日本電産株式会社 | Blower and cleaner |
| US20190159640A1 (en) * | 2017-11-24 | 2019-05-30 | Nidec Corporation | Blower and cleaner |
| CN111089069B (en) * | 2018-10-23 | 2021-10-15 | 台达电子工业股份有限公司 | Fan with cooling device |
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| JP2007240075A (en) * | 2006-03-09 | 2007-09-20 | Matsushita Electric Ind Co Ltd | Heat transport device, and liquid cooling system using the same |
| CN206221315U (en) * | 2016-11-23 | 2017-06-06 | 广东威灵电机制造有限公司 | Blower fan |
| CN108736648A (en) * | 2018-08-01 | 2018-11-02 | 苏州工业园区星德胜电机有限公司 | Motor of dust collector component |
| KR102141610B1 (en) * | 2019-04-19 | 2020-08-06 | 엘지전자 주식회사 | Fan Motor |
| CN210290212U (en) * | 2019-08-09 | 2020-04-10 | 美的威灵电机技术（上海）有限公司 | Fan and electrical equipment |
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| CN114109863A (en) | 2022-03-01 |
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