CN114629281A - Motor integrated structure that heat-sinking capability is good - Google Patents

Motor integrated structure that heat-sinking capability is good Download PDF

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Publication number
CN114629281A
CN114629281A CN202111480216.9A CN202111480216A CN114629281A CN 114629281 A CN114629281 A CN 114629281A CN 202111480216 A CN202111480216 A CN 202111480216A CN 114629281 A CN114629281 A CN 114629281A
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CN
China
Prior art keywords
motor
barrel
impeller
hole
flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111480216.9A
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Chinese (zh)
Inventor
韩春江
钟仁志
袁军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xinlei Compressor Co Ltd
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Xinlei Compressor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xinlei Compressor Co Ltd filed Critical Xinlei Compressor Co Ltd
Priority to CN202111480216.9A priority Critical patent/CN114629281A/en
Publication of CN114629281A publication Critical patent/CN114629281A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4063—Driving means; Transmission means therefor
    • A47L11/4069—Driving or transmission means for the cleaning tools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4094—Accessories to be used in combination with conventional vacuum-cleaning devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/22—Mountings for motor fan assemblies
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • H02K7/145—Hand-held machine tool
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft

Abstract

The invention discloses a motor integrated structure with good heat dissipation capacity, which comprises a motor barrel, wherein the motor barrel comprises an outer barrel and an inner barrel, a connecting post is connected between the outer barrel and the inner barrel, a heat dissipation outer air duct is formed between the connecting post by the outer barrel and the inner barrel, a machine core component is arranged on the inner side of the inner barrel, a front end cover and a rear end cover are respectively arranged at two ends of the inner barrel in a sealing manner, and the machine core component is provided with a driving impeller; the driving impeller comprises a shunting structure and a plurality of long blades which are arranged in a circumferential array around the axis of the driving impeller; a front outer end cover and a rear outer end cover are respectively arranged at two ends of the outer barrel, and the driving impeller is positioned between the front outer end cover and the front end cover; an air inlet coaxial with the driving impeller is arranged on the front outer end cover, and an air outlet communicated with the heat dissipation outer air duct is arranged on the wall surface of the outer barrel. The invention has the advantages that the motor structure is integrated into the air duct, the motor structure is integrally designed in a closed manner, dust is not easy to enter, the structure integration is high, and the heat dissipation capability of the motor is strong.

Description

Motor integrated configuration that heat-sinking capability is good
Technical Field
The application relates to the technical field of motor integration, in particular to a motor integrated structure with good heat dissipation capability.
Background
The existing sweeper or dust collector usually adopts a motor with an impeller, the impeller is driven to rotate by the motor, and negative pressure air suction is completed by matching with a wind channel outside the motor, so that dust collection treatment is completed. Dust collecting equipment's among the prior art motor and wind channel installation are fixed, have the gap easily between motor and the wind channel, advance the ash easily between the two, influence the motor heat dissipation to produce vibrations easily between motor and the wind channel, form the noise, influence customer experience and dust collecting equipment's life.
For example, in chinese patent document, patent No. CN2021105726310 discloses an invention patent named "a motor flow guiding element and a dust collecting device" in 30.7/2021, which discloses a motor flow guiding element and a dust collecting device, belongs to the technical field of household appliances, and is used to solve the problem that the existing motor part needs two different parts for air inlet and outlet. The motor guide of the invention comprises: the air inlet channel is communicated with an air inlet of the motor assembly so as to guide fluid to the motor assembly; the exhaust channel is communicated with the air outlet of the motor component so as to guide away the fluid discharged by the motor component; the air inlet channel is provided with a first air inlet and a first air outlet, and the first air outlet is communicated with the air inlet of the motor assembly; the exhaust passage is provided with a second air inlet and a second air outlet, and the second air inlet is communicated with the air outlet of the motor assembly.
The structure that air current channel and motor separate in prior art has caused the motor heat dissipation ability poor, and the use temperature rise is great to and the motor shakes the problem that the noise is big in the air current channel by force.
Disclosure of Invention
Based on the defects in the prior art, the invention provides the motor integrated structure with good heat dissipation capacity, the motor structure is integrated into the air duct, and the motor structure is integrally designed in a closed manner, so that dust is not easy to enter, the structure integration is high, and the heat dissipation capacity of the motor is strong.
In order to achieve the above object, the present invention adopts the following technical solutions.
A motor integrated structure with good heat dissipation capability is characterized by comprising a motor barrel, wherein the motor barrel comprises an outer barrel and an inner barrel, a connecting post is connected between the outer barrel and the inner barrel, a heat dissipation outer air duct is formed between the connecting post by the outer barrel and the inner barrel, a machine core component is arranged on the inner side of the inner barrel, a front end cover and a rear end cover are respectively arranged at two ends of the inner barrel in a sealing manner, and the machine core component is provided with a driving impeller; the driving impeller comprises a shunting structure and a plurality of long blades which are arranged in a circumferential array around the axis of the driving impeller; a front outer end cover and a rear outer end cover are respectively arranged at two ends of the outer barrel, and the driving impeller is positioned between the front outer end cover and the front end cover; an air inlet coaxial with the driving impeller is arranged on the front outer end cover, and an air outlet communicated with a heat dissipation outer air duct is arranged on the wall surface of the outer barrel.
According to the air inlet device, the motor assembly and the air inlet duct are integrated, the motor barrel is used as a part of the motor and is also directly used as the air inlet duct, a volute does not need to be designed for the motor, and the structural integration performance of the motor and the air inlet duct is good; the dust is not easy to enter the motor, the motor directly radiates heat through the radiating outer air duct, and the radiating capacity is good; the drive impeller includes long blade and splitter blade, and what adopt is radial impeller, and the radiating efficiency of motor is guaranteed in the wind channel outside the air current can fully spread the heat dissipation to the air outlet setting of this application is on the urceolus wall, thereby will accomplish the air current diversion, sets up more possible forms for motor complex dust collecting equipment for the dust absorption and provides probably.
Preferably, the inner side of the front outer end cover is provided with a ring matched with the driving impeller, and the ring is made of organic polymer materials. The ring is used for protecting the impeller, reduces the windage, and the ring adopts organic macromolecular material to make, when drive impeller rotates, can directly scrape off the portion of not fitting with to make drive impeller and ring adaptability increase greatly, be favorable to the wind channel stability of drive impeller.
Preferably, the inner cylinder is provided with a plurality of radiating tooth ribs on the wall surface of the radiating outer air duct. The heat dissipation capacity of the movement assembly is improved.
Preferably, the shunting structure adopts shunting blades which are alternately arranged with the long blades, and the shunting blades and the long blades adjacent to the shunting blades on the two sides are arranged at equal angular intervals. The shunting action of the shunting blades is stable and reliable.
Preferably, a mounting through hole used for being matched with an output shaft of the core assembly is formed in the driving impeller, a stepped hole matched with the output shaft of the core assembly is formed in the mounting through hole, and a locking screw matched with the end portion of the output shaft in a threaded mode is arranged in the mounting through hole. The driving impeller and the output shaft of the core assembly are axially locked and fixed through the locking screw, the stepped hole provides auxiliary limiting, and the locking screw is matched to ensure the installation reliability of the driving impeller and the output shaft.
As preferred, the outer end of installation through-hole is equipped with the fairing cap, fairing cap and locking screw upper end cooperation, and the outside of air intake is stretched out to the outer end of fairing cap. The arrangement of the rectifying cap reduces the wind resistance at the end part of the driving impeller and improves the air inlet and dust collection capacity of the motor.
Preferably, the front end cover is provided with a limit groove matched with the driving impeller, the edge of the limit groove is provided with a limit ring in a surrounding manner, and a gap is formed between the driving impeller and the bottom of the limit groove. The limiting groove is matched with the limiting ring to limit the driving impeller, the driving impeller is guaranteed not to be in contact with the bottom of the limiting groove through the arrangement of the gap, and the rotation stability of the driving impeller is guaranteed.
Preferably, the flow dividing structure adopts an axial-flow impeller, a mounting hole is formed in the axis of the driving impeller, the axial-flow impeller is positioned in the mounting hole, blades of the axial-flow impeller are fixed on the inner wall of the mounting hole, and the axial-flow impeller is fixedly connected with an output shaft of the core assembly; the mounting through hole is arranged at the axis of the axial flow impeller. The axial-flow impeller is arranged, so that the driving impeller has radial wind power and axial wind power, the axial wind power is transmitted to the limiting groove and then flows out to form an air film, the driving impeller is not in contact with the limiting groove, and the service life of the driving impeller is prolonged.
Preferably, a guide surface is arranged in the limiting groove and inclines downwards from the middle to the outer end, and a guide outlet is arranged on the limiting ring. The air flow brought by the axial flow impeller can flow out conveniently, and the reliability of the driving impeller is ensured.
Preferably, the mounting hole is of a blind hole structure, the bottom of the mounting hole is provided with a flow gathering surface, an axial flow hole is formed in an output shaft of the movement assembly, and the axial flow hole is communicated with the flow gathering surface. The mounting hole converges and flows to axial compressor downthehole through the surface water conservancy diversion of gathering, and the inside output shaft of core subassembly forms axial-flow type inner air duct, further improves the heat-sinking capability of motor, and the output shaft both ends of core subassembly stretch out front end housing and rear end cap skin respectively, and inner air duct sets up independently, and the smoothness is good.
The invention has the following beneficial effects: with motor structure integration to the wind channel in, motor structure wholly closed design is difficult for advancing the ash, and the structure integration nature is high, and motor heat-sinking capability is strong.
Drawings
FIG. 1 is an exploded view of the structure of a first embodiment of the present invention
Fig. 2 is a schematic external view of the embodiment shown in fig. 1.
Fig. 3 is a cross-sectional view at a-a in fig. 2.
Fig. 4 is a schematic view of the structure of the motor cartridge of the present invention.
Fig. 5 is a schematic structural view of the driving impeller of the embodiment shown in fig. 1.
Figure 6 is a sectional view of the structure of the drive impeller and the output shaft of the cartridge assembly in a second embodiment of the invention.
Fig. 7 is a schematic structural view of the driving impeller of the embodiment shown in fig. 6.
Figure 8 is a cross-sectional view of the drive impeller and cartridge assembly output shaft arrangement in a third embodiment of the invention.
In the figure: motor barrel 1 outer barrel 2 air outlet 3 air outlet pipe 4 inner barrel 5 heat dissipation tooth rib 6 connecting pole 7 stator assembly 8 rotor assembly 9 output shaft 10 front end cover 11 limit groove 12 limit ring 13 rear end cover 14 drive impeller 15 mounting through hole 16 fairing cap 17 long blade 18 splitter blade 19 front outer end cover 20 air inlet 21 type ring 22 rear outer end cover 23 mounting hole 24 axial flow impeller 25 axial flow seat 26 axial flow blade 27 flow guide surface 28 air guide outlet 29 flow convergence surface 30 first axial flow hole 31 second axial flow hole 32 third axial flow hole 33 flow groove 34 controller 35 wiring hole 36.
Detailed Description
The invention is further illustrated with reference to the figures and the specific embodiments.
In the case of the example 1, the following examples are given,
as shown in fig. 1 to 5, a motor integrated structure with good heat dissipation capability comprises a motor barrel 1, wherein the motor barrel 1 comprises an outer barrel 2 and an inner barrel 5, a connecting post 7 is connected between the outer barrel 2 and the inner barrel 5, a heat dissipation outer air duct is formed between the connecting post 7 by the outer barrel 2 and the inner barrel 5, a movement assembly is arranged on the inner side of the inner barrel 5, the movement assembly comprises a stator assembly 8 fixed on the inner wall of the inner barrel 5 and a rotor assembly 9 positioned in the stator assembly 8, a motor shaft is coaxially arranged in the rotor assembly 9, the motor shaft is directly used as an output shaft 10, a front end cover 11 and a rear end cover 14 are respectively arranged at two ends of the inner barrel 5 in a sealing manner, and the movement assembly is provided with a driving impeller 15; the driving impeller 15 is internally provided with a mounting through hole 16 used for matching with the output shaft 10 of the movement assembly, the mounting through hole 16 is provided with a step hole matched with the output shaft 10 of the movement assembly, and the mounting through hole 16 is internally provided with a locking screw matched with the end part of the output shaft 10 in a threaded manner. The outer end of the installation through hole 16 is provided with a rectifying cap 17, the rectifying cap 17 is matched with the upper end of the locking screw, and the outer end of the rectifying cap 17 extends out of the air inlet 21. The outer end of the rectifying cap 17 is shaped like a semi-ellipsoid. The output end of the output shaft 10 connected with the driving impeller 15 is connected with the front end cover 11 through two bearings arranged in pairs, and the output shaft 10 is rotatably connected with the rear end cover 14 through the bearings. The driving impeller 15 comprises a flow dividing structure and a plurality of long blades 18 which are arranged around the axis of the driving impeller in a circumferential array manner; the shunting structure adopts shunting blades 19 alternately arranged with the long blades, and the shunting blades 19 and the long blades 18 adjacent to the two sides of the shunting blades are arranged at equal angular intervals. The splitter blade 19 can be rotated about the axis of the drive impeller 15 and can be overlapped with the radially outer end of the long blade 18 adjacent to both sides. The driving impeller 15 further comprises a wheel seat, one side of the wheel seat facing the front end cover 11 is a plane, one side of the wheel seat facing away from the front end cover 11 is provided with a revolution surface with a bus in a concave curve, and the long blades 18 and the splitter blades 19 are arranged on the revolution surface. A front outer end cover 20 and a rear outer end cover 23 are respectively arranged at two ends of the outer cylinder 2, and the driving impeller 15 is positioned between the front outer end cover 20 and the front end cover 11; the front end cover 11 is provided with a limit groove 12 matched with the driving impeller 15, the edge of the limit groove 12 is provided with a limit ring 13 in a surrounding manner, and a gap is arranged between the driving impeller 15 and the bottom of the limit groove 12. The inner side of the front outer end cover 20 is provided with a ring 22 for matching with the driving impeller 15, and the ring 22 is made of organic polymer material such as nylon. An air inlet 21 which is coaxial with the driving impeller 15 is arranged on the front outer end cover 20, and an air outlet 3 communicated with a heat dissipation outer air duct is arranged on the wall surface of the outer barrel 2. An air outlet pipe 4 is connected to the air outlet 3 through a flange. The inner cylinder 5 is provided with a plurality of radiating tooth ribs 6 on the wall surface of the radiating outer air duct. The heat dissipation toothed ribs 6 are long-strip-shaped and arranged along the generatrix of the inner cylinder 5, the cross sections of the heat dissipation toothed ribs 6 are rectangular, and the heat dissipation toothed ribs 6 are uniformly arranged on the wall surface of the inner cylinder 5. The heat dissipation ribs 6 are exposed in the heat dissipation outer duct. The outer side of the motor barrel 1 is further provided with a controller 35, the controller 35 is provided with a shell of the controller 35, five groups of connecting columns 7 are arranged between the inner barrel 5 and the outer barrel 2, the same group of connecting columns 7 are located on the same radial plane of the motor barrel 1, and each group of connecting columns 7 comprises two connecting columns 7 which are arranged at intervals. A wiring column is further arranged between the inner barrel 5 and the outer barrel 2, a wiring hole 36 is arranged in the wiring column, and circuit connection of the stator assembly 8 and the controller 35 can be completed through the wiring hole 36.
According to the motor and the air inlet duct, the motor assembly and the air inlet duct are integrated, the motor barrel 1 is used as a part of the motor and is also directly used as the air inlet duct, a volute does not need to be designed for the motor, and the structural integration performance of the motor and the air inlet duct is good; the dust is not easy to enter the motor, the motor directly radiates heat through the radiating outer air duct, and the radiating capacity is good; the driving impeller 15 comprises long blades 18 and splitter blades 19, a radial impeller is adopted, air flow can be fully diffused into a heat dissipation outer air duct, the heat dissipation efficiency of the motor is guaranteed, the air outlet 3 is arranged on the wall of the outer barrel 2, air flow turning is achieved, and more possible forms are provided for dust collection equipment matched with the motor for dust collection.
In the case of the example 2, the following examples are given,
the embodiment 2 is different from the embodiment 1 only in that: as shown in fig. 6 and 7, the flow dividing structure adopts an axial-flow impeller, a mounting hole 24 is formed in the axis of the driving impeller 15, the axial-flow impeller 25 is located in the mounting hole 24, the axial-flow impeller 25 includes an axial-flow seat 26 and axial-flow blades 27, the axial-flow blades 27 of the axial-flow impeller 25 are fixed on the hole wall of the mounting hole 24, the axial-flow seat 26 is cylindrical, and the axial-flow impeller 25 is fixedly connected with the output shaft 10 of the movement assembly; the mounting through-hole 16 is provided at the axis of the axial-flow impeller 25. The mounting hole 24 is of a through hole structure, the tail end of the mounting hole 24 is communicated with the limiting groove 12, a guide surface 28 which is obliquely and downwardly arranged from the middle to the outer end is arranged in the limiting groove 12, and a guide outlet 29 is arranged on the limiting ring 13. The axial flow impeller 25 is arranged to enable the driving impeller 15 to have radial wind power and axial wind power, and the axial wind power flows out after being transmitted to the limiting groove 12 to form an air film, so that the driving impeller 15 is ensured not to be in contact with the limiting groove 12, and the service life of the driving impeller 15 is prolonged; the axial air supply can further improve the heat dissipation efficiency of the motor. In this embodiment, the axial flow impeller 25 distributes the airflow, and the axial flow blades serve as a flow dividing structure, so the driving impeller 15 may be provided with the flow dividing blades 19, or may not be additionally provided with the flow dividing blades 19. The drive impeller in this embodiment is not provided with splitter blades.
In the case of the example 3, the following examples are given,
the embodiment 3 is different from the embodiment 2 only in that: as shown in fig. 8, the mounting hole 24 is a blind hole structure, the bottom of the mounting hole 24 is provided with a flow collecting surface 30, the flow collecting surface 30 is ellipsoidal, the axial flow impeller 25 comprises an axial flow seat 26 and axial flow blades 27, the axial flow seat 26 is cylindrical, the lower ends of the axial flow blades 27 are separated from the flow collecting surface 30, and a transition fillet is arranged between the flow collecting surface 30 and the outer side of the axial flow seat 26. The flow gathering surface 30 and the output shaft 10 of the movement assembly are internally provided with axial flow holes which are communicated with the flow gathering surface 30. The flow gathering surface 30 is arranged corresponding to the first axial flow hole 31 on the axial flow impeller 25 and is inclined relative to the axial line of the axial flow impeller 25, the radial section of the first axial flow hole 31 is circular, and the diameter of the first axial flow hole 31 is gradually reduced from the flow gathering surface 30 outwards. The axial flow hole on the output shaft 10 comprises a second axial flow hole 32 and a third axial flow hole 33, the second axial flow hole 32 is arranged in an inclined mode from top to bottom, the third axial flow hole 33 is arranged along the axis of the output shaft 10, the lower end of the third axial flow hole 33 penetrates through the lower end of the second axial flow hole 32, a flow passing groove 34 with a semicircular cross section is arranged at the upper end of the second axial flow hole 32, the flow passing groove 34 is an annular groove arranged in the radial direction of the output shaft 10, the opening size of the outer end of the flow passing groove 34 is larger than the aperture of the lower end of the first axial flow hole 31, the lower end of the first axial flow hole 31 corresponds to the position of the flow passing groove 34, therefore, the first flow passing hole and the second flow passing hole do not need to be installed in an aligned mode when the output shaft 10 and the axial flow impeller 25 are installed, and smoothness of the axial flow holes can be guaranteed. In the embodiment, the mounting holes 24 are converged and then flow into the axial flow hole through the flow collecting surface 30 in a flow guiding manner, the output shaft 10 inside the core assembly forms an axial flow type inner air duct, the heat dissipation capacity of the motor is further improved, two ends of the output shaft 10 of the core assembly respectively extend out of the outer layers of the front end cover 11 and the rear end cover 14, the inner air duct is independently arranged, and the smoothness is good.

Claims (10)

1. A motor integrated structure with good heat dissipation capability is characterized by comprising a motor barrel, wherein the motor barrel comprises an outer barrel and an inner barrel, a connecting post is connected between the outer barrel and the inner barrel, a heat dissipation outer air duct is formed between the connecting post by the outer barrel and the inner barrel, a machine core component is arranged on the inner side of the inner barrel, a front end cover and a rear end cover are respectively arranged at two ends of the inner barrel in a sealing manner, and the machine core component is provided with a driving impeller; the driving impeller comprises a shunting structure and a plurality of long blades which are arranged in a circumferential array around the axis of the driving impeller; a front outer end cover and a rear outer end cover are respectively arranged at two ends of the outer barrel, and the driving impeller is positioned between the front outer end cover and the front end cover; an air inlet coaxial with the driving impeller is arranged on the front outer end cover, and an air outlet communicated with the heat dissipation outer air duct is arranged on the wall surface of the outer barrel.
2. The integrated motor structure according to claim 1, wherein a ring for engaging with the impeller is disposed on an inner side of the front outer end cap, and the ring is made of an organic polymer material.
3. The integrated motor structure as claimed in claim 1, wherein the inner cylinder has a plurality of heat dissipating ribs on the wall of the heat dissipating outer duct.
4. The motor integrated structure with good heat dissipation capability of claim 1, wherein the shunting structure adopts shunting blades alternately arranged with the long blades, and the shunting blades are arranged at equal angular intervals with the long blades adjacent to both sides of the shunting blades.
5. The motor integrated structure with good heat dissipation capability as claimed in claim 1, wherein a mounting through hole for matching with the output shaft of the movement assembly is formed in the driving impeller, the mounting through hole is provided with a stepped hole for matching with the output shaft of the movement assembly, and a locking screw in threaded fit with the end portion of the output shaft is formed in the mounting through hole.
6. The integrated motor structure as claimed in claim 5, wherein a rectifying cap is disposed at an outer end of the mounting through hole, the rectifying cap is engaged with an upper end of the locking screw, and an outer end of the rectifying cap extends out of the air inlet.
7. The integrated motor structure according to claim 1, wherein the front cover has a limiting groove for engaging with the driving impeller, the limiting groove has a limiting ring around its edge, and a gap is formed between the driving impeller and the bottom of the limiting groove.
8. The motor integrated structure with good heat dissipation capability of claim 1, wherein the flow dividing structure is an axial-flow impeller, a mounting hole is formed in the axis of the driving impeller, the axial-flow impeller is located in the mounting hole, blades of the axial-flow impeller are fixed on the inner wall of the mounting hole, and the axial-flow impeller is fixedly connected with an output shaft of the movement assembly; the mounting through hole is arranged at the axis of the axial flow impeller.
9. The integrated motor structure as claimed in claim 7, wherein the limiting groove has a flow guide surface inclined downward from the middle to the outer end, and the limiting ring has a flow guide outlet.
10. The motor integrated structure with good heat dissipation capability of claim 8, wherein the mounting hole is a blind hole structure, the bottom of the mounting hole is provided with a flow gathering surface, an axial flow hole is formed inside an output shaft of the core assembly, and the axial flow hole is communicated with the flow gathering surface.
CN202111480216.9A 2021-12-06 2021-12-06 Motor integrated structure that heat-sinking capability is good Pending CN114629281A (en)

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Application Number Priority Date Filing Date Title
CN202111480216.9A CN114629281A (en) 2021-12-06 2021-12-06 Motor integrated structure that heat-sinking capability is good

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2622024A (en) * 2022-08-31 2024-03-06 Dyson Technology Ltd Drive system for a floor cleaner

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