WO2019227659A1 - 一种扫地机器人的风机组件和扫地机器人 - Google Patents

一种扫地机器人的风机组件和扫地机器人 Download PDF

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Publication number
WO2019227659A1
WO2019227659A1 PCT/CN2018/098020 CN2018098020W WO2019227659A1 WO 2019227659 A1 WO2019227659 A1 WO 2019227659A1 CN 2018098020 W CN2018098020 W CN 2018098020W WO 2019227659 A1 WO2019227659 A1 WO 2019227659A1
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WO
WIPO (PCT)
Prior art keywords
impeller
fan assembly
cleaning robot
motor
convex edge
Prior art date
Application number
PCT/CN2018/098020
Other languages
English (en)
French (fr)
Inventor
徐小伟
熊芳非
Original Assignee
江苏美的清洁电器股份有限公司
美的集团股份有限公司
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 江苏美的清洁电器股份有限公司, 美的集团股份有限公司 filed Critical 江苏美的清洁电器股份有限公司
Priority to EP18920822.6A priority Critical patent/EP3779203B1/en
Priority to KR1020207032789A priority patent/KR102396076B1/ko
Priority to JP2020564607A priority patent/JP7058765B2/ja
Priority to US16/128,540 priority patent/US10557478B2/en
Publication of WO2019227659A1 publication Critical patent/WO2019227659A1/zh

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Classifications

    • 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
    • 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
    • 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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • 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
    • 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
    • F04D17/168—Pumps specially adapted to produce a vacuum
    • 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
    • F04D29/4253—Fan casings with axial entry and discharge
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
    • 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
    • A47L2201/00—Robotic cleaning machines, i.e. with automatic control of the travelling movement or the cleaning operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet

Definitions

  • the invention relates to a vacuum cleaner and its accessories, and more particularly, to a fan assembly and a cleaning robot for a cleaning robot.
  • the “suction” of a sweeping robot is inseparable from the fan, and the structure of the fan is inseparable from the size of the “suction”.
  • the types of fans used in the cleaning robot include an axial fan A shown in FIG. 1.
  • the axial fan A drives an impeller B to rotate the electric motor C to rotate the air around to generate suction.
  • the type of fan in the sweeping robot also includes a centrifugal fan D as shown in FIG. 2.
  • the air duct structure of the centrifugal fan D is similar to that of the volute.
  • the air duct in the above fan is mainly formed by the fan casing.
  • the air duct has poor directivity to the wind, which causes the suction force of the fan to be small, which makes the cleaning robot not clean and has low efficiency.
  • embodiments of the present invention provide a fan assembly and a cleaning robot for a cleaning robot.
  • An embodiment of the present invention provides a fan assembly of a cleaning robot.
  • the fan assembly of the cleaning robot includes: a motor, a fixed impeller, a moving impeller, and a windshield;
  • the fixed impeller is provided with a shaft hole, and the motor is installed in the fixed One side of the impeller, the output shaft of the motor passes through the shaft hole;
  • the wind hood is installed on the other side of the fixed impeller, and the end of the wind hood away from the fixed impeller is provided with an air inlet;
  • the moving impeller is mounted on the output shaft of the motor and is located between the windshield and the fixed impeller.
  • the shape of the air hood is a cylindrical shape matching the moving impeller, the air inlet is circular, and the diameter of the air inlet is larger than the diameter of the air hood or the moving impeller.
  • the value ranges from 1/5 to 4/5.
  • the ratio of the diameter of the air inlet to the diameter of the air hood is 2/5.
  • the fixed impeller includes an impeller front disc, an impeller rear disc, and several blades;
  • the front disc of the impeller includes a circular plate and a ring edge, the ring edge is disposed at the periphery of the circular plate and extends toward the direction of the motor, and the shaft hole is located at the center of the circular plate;
  • the impeller back plate includes a bottom plate and a first convex edge, and a first circular hole is opened in the middle of the bottom plate.
  • the first convex edge is provided on the bottom plate along the periphery of the first circular hole and faces the windshield. Extending in the direction of
  • a plurality of the blades are fixedly spaced between the ring edge and the first convex edge, and a gap between the plurality of blades forms a plurality of air guide channels.
  • the fan assembly of the cleaning robot further includes a first fastener, the motor is provided with a first mounting hole, and the circular plate is provided with a second mounting corresponding to the first mounting hole. Hole, the first fastener is threaded through the first mounting hole and the second mounting hole to fasten the motor to one side of the fixed impeller.
  • the windshield is sleeved on the outside of the first convex edge, and the windshield fits the first convex edge in an interference fit.
  • the fan assembly of the cleaning robot further includes a support and a second fastener, and the fixed impeller is mounted on the support;
  • the support includes a base plate and a first leg, a second circular hole is opened in the middle of the base plate, and the first leg is respectively provided at two ends of the base plate along the second circular aperture direction;
  • the impeller rear disc further includes second legs respectively provided at both ends along the first circular aperture, and the second fastener passes through the first leg and the second leg to connect the The fixed impeller is fastened on the support.
  • a protrusion is provided on the first leg, and a groove matching the protrusion is provided on the second leg, and the protrusion extends into the groove.
  • the impeller rear disc further includes a second convex edge, and the second convex edge is disposed on the bottom plate along the periphery of the first circular hole and extends toward the motor;
  • the substrate is provided with a ring groove matching the second convex edge along the periphery of the second circular hole, and the second convex edge is buckled into the ring groove.
  • An embodiment of the present invention further provides a cleaning robot, where the cleaning robot includes the fan assembly of the cleaning robot.
  • An embodiment of the present invention provides a blower assembly and a sweeping robot of a sweeping robot.
  • a motor is used to provide power, and the output shaft of the motor drives the impeller to rotate to throw the air that enters the air hood from the air inlet to the periphery of the impeller to generate suction.
  • the air flow thrown around the moving impeller flows toward the outlet along the gap between the blades of the fixed impeller.
  • the fixed impeller can effectively guide the air flow, make the fan's air flow more smooth and the wind direction is more significant, and improve the suction power and dust suction effect of the fan.
  • FIG. 1 is a schematic structural diagram of an axial flow fan in the prior art
  • FIG. 2 is a schematic structural diagram of a centrifugal fan in the prior art
  • FIG. 3 is a schematic diagram of an optional structure of a fan assembly of a cleaning robot according to an embodiment of the present invention.
  • FIG. 4 is a sectional view of an optional structure of a fan assembly of a cleaning robot according to an embodiment of the present invention
  • FIG. 5 is an exploded view of an optional structure of a fan assembly of a cleaning robot according to an embodiment of the present invention.
  • Motor 10 output shaft 11; first mounting hole 12; fixed impeller 20; circular plate 21; blade 22; bottom plate 23; second leg 24; shaft hole 25; second mounting hole 26; first convex edge 27; second Convex edge 201; first circular hole 28; ring edge 29; moving impeller 30; air hood 40; air inlet 41; support 50; base plate 51; first leg 52; projection 53; second circular hole 54; ring groove 55; routing gap 60.
  • the terms “installation”, “connected”, “connected”, “fixed”, etc. should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention according to the circumstances.
  • the embodiment of the first aspect of the present invention provides a fan assembly of the cleaning robot.
  • the fan assembly of the cleaning robot according to the embodiment of the present invention includes a motor 10, a fixed impeller 20, a movable impeller 30, and an air shroud 40; 20 is provided with a shaft hole 25, the motor 10 is installed on one side of the fixed impeller 20, and the output shaft 11 of the motor 10 passes through the shaft hole 25; the air hood 40 is installed on the other side of the fixed impeller 20, and the air hood 40 is far from the fixed impeller 20 An air inlet 41 is provided on the end surface; the moving impeller 30 is installed on the output shaft 11 of the motor 10, and is located between the air hood 40 and the fixed impeller 20.
  • the output shaft 11 of the motor 10 passes through a shaft hole 25 located at the center of the fixed impeller 20 and is connected to the center of the moving impeller 30 to drive the rotating impeller 30 to rotate.
  • the outer diameter of the shaft hole 25 is larger than the outer diameter of the output shaft 11.
  • One end face of the air hood 40 is mounted on the fixed impeller 20, and the other end face is provided with an air inlet 41.
  • the moving impeller 30 is disposed in the air hood 40 and is located between the air inlet 41 and the moving impeller 30. Therefore, the size of the windshield 40 only needs to be slightly larger than the moving impeller 30, and the structure between the various components of the fan assembly is compact, which can effectively reduce the height of the fan assembly, so as to better meet the low height requirements of the cleaning robot.
  • the fixed impeller 20 guides the airflow entering the fan assembly, which effectively improves the vacuum and suction of the fan assembly.
  • the shape of the air hood 40 is a cylindrical shape matching the moving impeller 30, the air inlet 41 is circular, and the diameter of the air inlet 41 is the same as the diameter of the air hood 40 or the moving impeller 30
  • the value ranges from 1/5 to 4/5. Further, the ratio of the diameter of the air inlet 41 to the diameter of the air hood 40 is 2/5.
  • FIG. 4 exemplarily shows a cross-sectional view of an optional structure of a fan assembly of a cleaning robot, wherein the diameter of the air inlet 41 is 28 mm, the diameter of the air hood 40 is 69 mm, the air inlet 41, the air hood 40, the moving impeller 30, Both the fixed impeller 20 and the motor 10 are arranged coaxially.
  • the fixed impeller 20 includes an impeller front disk, an impeller rear disk, and a plurality of blades 22; the impeller front disk includes a circular plate 21 and a ring edge 29, and the ring edge 29 is provided on the periphery of the circular plate 21.
  • the shaft hole 25 is located at the center of the circular plate 21; the rear disc of the impeller includes a bottom plate 23 and a first convex edge 27.
  • a first circular hole 28 is opened in the middle of the bottom plate 23, and the first convex edge 27 is along the first circular hole.
  • the periphery of 28 is disposed on the bottom plate 23 and extends in the direction of the windshield 40; a plurality of blades 22 are fixedly spaced between the ring edge 29 and the first convex edge 27, and the gaps between the plurality of blades 22 form a plurality of air guide channels.
  • FIG. 5 exemplarily shows an exploded view of the fan assembly of the cleaning robot, wherein the routing gap 60 on the fixed impeller 20 is located on the bottom plate 23.
  • the fan assembly of the cleaning robot further includes a first fastener (not shown), the motor 10 is provided with a first mounting hole 12, and the circular plate 21 is provided with the first installation A second mounting hole 26 corresponding to the hole 12, a first fastener is threaded through the first mounting hole 12 and the second mounting hole 26 to fasten the motor 10 to one side of the fixed impeller 20.
  • the first fasteners, the first mounting holes 12 and the second mounting holes 26 may be provided as required.
  • the first fastener includes, but is not limited to, bolts and screws.
  • the end surface of the motor 10 is provided with three first mounting holes 12 at even intervals in the circumferential direction
  • the impeller front disk 21 is provided with three second mounting holes 26 corresponding to the first mounting holes 12 in the circumferential direction.
  • the first through-hole 12 and the second through-hole 26 are fixed by the fastener to fix the fixed impeller 20 on the motor 10.
  • the windshield 40 is sleeved on the outside of the first convex edge 27, and the windshield 40 and the first convex edge 27 are interference fit.
  • the windshield 40 is fixed on the fixed impeller 20 by interference fit with the first convex edge 27.
  • the installation method is simple and convenient.
  • the fan assembly of the cleaning robot further includes a support 50 and a second fastener, and the fixed impeller 20 is mounted on the support 50;
  • the support 50 includes a base plate 51 and a first leg 52
  • a second circular hole 54 is provided in the middle of the base plate 51.
  • First ends 52 of the base plate 51 along the radial direction of the second circular hole 54 are respectively provided;
  • the second leg 24 and the second fastener pass through the first leg 52 and the second leg 24 to fasten the fixed impeller 20 on the support 50.
  • the support 50 is preferably made of a material having a noise reduction function, for example, the support 50 is a rubber piece. Because the fixed impeller 20 is connected to the motor 10, when the motor 10 is in working state, the motor 10 itself or between the motor 10 and the fixed impeller 20 will vibrate and generate noise, and the support 50 can absorb sound waves to reduce vibration and noise. In order to facilitate the positioning and installation of the fan assembly wiring harness, a routing notch 60 can also be provided on the support 50 as required.
  • the second fastener includes, but is not limited to, bolts and screws. As shown in FIG. 3, three routing gaps 60 are provided at intervals along the substrate 51.
  • the motor 10 is connected to the fixed impeller 20 through the second circular hole 54.
  • the support 50 is arranged around the motor 10, which is beneficial to improve noise reduction. effect.
  • a protrusion 53 is provided on the first leg 52, a groove matching the protrusion 53 is provided on the second leg 24, and the protrusion 53 extends into the groove.
  • FIG. 5 exemplarily shows an exploded view of an optional structure of the fan assembly of the cleaning robot, wherein each first leg 52 is provided with a protrusion 53, and the protrusion 53 protrudes toward the fixed impeller 20.
  • the rear disc of the impeller further includes a second convex edge 201, which is disposed on the bottom plate 23 along the periphery of the first circular hole 28 and extends in the direction of the motor 10.
  • a ring groove 55 is provided along the periphery of the second circular hole 54 to cooperate with the second convex edge 201.
  • the second convex edge 201 is buckled into the ring groove 55.
  • the buckling of the second convex edge 201 into the ring groove 55 can not only make the cooperation between the fixed impeller 20 and the support 50 more compact, but also improve the sealing effect, reduce the outflow of the air flow inside the fan component, and increase the suction force of the fan component.
  • the cleaning robot according to the embodiment of the second aspect of the present invention includes the fan assembly of the cleaning robot according to the above embodiment. Since the fan assembly of the cleaning robot according to the embodiment of the present invention has the above-mentioned effect, the cleaning robot according to the embodiment of the present invention also has the corresponding technical effect, that is, the structure is compact.
  • the fixed impeller 20 can effectively guide the airflow, make the fan component output more smoothly and the wind direction is more significant, improve the suction force of the fan component, and improve the suction effect and efficiency of the cleaning robot.

Abstract

一种扫地机器人的风机组件，包括电机（10）、定叶轮（20）、动叶轮（30）和风罩（40）；定叶轮（20）设有轴孔（25），电机（10）安装在定叶轮（20）的一侧，电机（10）的输出轴（11）穿过轴孔（25）；风罩（40）安装在定叶轮（20）的另一侧，风罩（40）远离定叶轮（20）的端面设有进风口（41）；动叶轮（30）安装在电机（10）的输出轴（11）上，且位于风罩（40）和定叶轮（20）之间。还涉及包括该风机组件的扫地机器人。

Description

一种扫地机器人的风机组件和扫地机器人
相关申请的交叉引用
本申请基于申请号为201820837853.4，申请日为2018年05月30日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明涉及吸尘器及其附件，更具体地，涉及一种扫地机器人的风机组件和扫地机器人。
背景技术
随着清洁方式的多元化，扫地机器人已经出现在越来越多的家庭中。扫地机器人的工作方式主要分为“吸”和“扫”。与传统吸尘器一样，扫地机器人的“吸”也离不开风机，而风机的结构与“吸力”的大小密不可分。通常，扫地机器人中使用的风机类型包括图1所示的轴流式风机A，轴流式风机A通过电动马达C驱动动叶轮B旋转将空气甩向四周以产生吸力。扫地机器人中风机类型还包括图2所示的离心式风机D，离心风机D的风道结构与蜗壳相似，通过离心风机D中心处的马达驱动定叶轮旋转产生吸力。以上风机中风道主要由风机壳体限定形成，该风道对出风导向性不好，导致风机的吸力偏小，从而使得扫地机器人清扫不干净，效率低。
发明内容
为解决上述技术问题，本发明实施例提供了一种扫地机器人的风机组件和扫地机器人。
为达到上述目的，本发明的技术方案是这样实现的：
本发明实施例提供了一种扫地机器人的风机组件，所述扫地机器人的风机组件包括：电机、定叶轮、动叶轮和风罩；所述定叶轮设有轴孔，所述电机安装在所述定叶轮的一侧，所述电机的输出轴穿过所述轴孔；所述风罩安装在所述定叶轮的另一侧，所述风罩远离所述定叶轮的端面设有进风口；所述动叶轮安装在所述电机的输出轴上，且位于所述风罩和所述定叶轮之间。
上述方案中，所述风罩的形状为与所述动叶轮相配合的圆筒形，所述进风口为圆形，所述进风口的直径与所述风罩或所述动叶轮的直径比的取值范围为1/5～4/5。
上述方案中，所述进风口的直径与所述风罩的直径比为2/5。
上述方案中，所述定叶轮包括叶轮前盘、叶轮后盘和若干叶片；
所述叶轮前盘包括圆板和环边，所述环边设置在所述圆板的周边且朝向所述电机的方向延伸，所述轴孔位于所述圆板中心；
所述叶轮后盘包括底板和第一凸边，所述底板中间开设第一圆孔，所述第一凸边沿所述第一圆孔的周边设置在所述底板上，且朝向所述风罩的方向延伸；
若干所述叶片间隔固定在所述环边和所述第一凸边之间，若干所述叶片之间的间隙形成若干导风通道。
上述方案中，所述扫地机器人的风机组件还包括第一紧固件，所述电机上设有第一安装孔，所述圆板上设有与所述第一安装孔相对应的第二安装孔，所述第一紧固件穿设于所述第一安装孔和所述第二安装孔，以将所述电机紧固连接在所述定叶轮的一侧。
上述方案中，所述风罩套设在所述第一凸边外侧，所述风罩与所述第一凸边过盈配合。
上述方案中，所述扫地机器人的风机组件还包括支座和第二紧固件，所述定叶轮安装在所述支座上；
所述支座包括基板和第一支脚，所述基板中间开设第二圆孔，所述基板沿所述第二圆孔径向的两端分别设置所述第一支脚；
所述叶轮后盘还包括沿所述第一圆孔径向的两端分别设置的第二支脚，所述第二紧固件穿过所述第一支脚和所述第二支脚，以将所述定叶轮紧固连接在所述支座上。
上述方案中，所述第一支脚上设有凸块，所述第二支脚上设有与所述凸块相配合的凹槽，所述凸块伸入所述凹槽内。
上述方案中，所述叶轮后盘还包括第二凸边，所述第二凸边沿所述第一圆孔的周边设置在所述底板上，且朝向所述电机的方向延伸；
所述基板沿所述第二圆孔的周边设有与所述第二凸边相配合的环槽，所述第二凸边扣入所述环槽内。
本发明实施例还提供了一种扫地机器人，所述扫地机器人包括上述扫地机器人的风机组件。
本发明实施例提供了一种扫地机器人的风机组件和扫地机器人，电机用于提供动力，使电机输出轴带动动叶轮旋转以将自进风口进入风罩内的空气甩向动叶轮四周产生吸力。被甩向动叶轮四周的空气气流沿着定叶轮的叶片之间空隙向出口流去。定叶轮能够有效对空气气流进行导向，使风机出风更加顺畅，风向更显著，提高了风机的吸力和吸尘效果。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是现有技术中轴流式风机的结构示意图；
图2是现有技术中离心式风机的结构示意图；
图3是本发明实施例的扫地机器人的风机组件一个可选的结构示意图；
图4是本发明实施例的扫地机器人的风机组件一个可选结构的剖视图；
图5是本发明实施例的扫地机器人的风机组件一个可选结构的爆炸图。
附图标记：
电机10；输出轴11；第一安装孔12；定叶轮20；圆板21；叶片22；底板23；第二支脚24；轴孔25；第二安装孔26；第一凸边27；第二凸边201；第一圆孔28；环边29；动叶轮30；风罩40；进风口41；支座50；基板51；第一支脚52；凸块53；第二圆孔54；环槽55；走线缺口60。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例的附图，对本发明实施例的技术方案进行清除、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部实施例。基于所描述的本发明的实施例，本领域技术人员所获得的所有其他实施例，都属于本发明保护范围。
在本发明的描述中，需要理解的是，如有术语“上”、“下”、“内”、“外”等指示的方位或者位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或隐含只能所指示的技术特征的数量。
在本发明中，除非另有明确的规定和限定，如有术语“安装”、“相连”、“连接”、“固定”等应做广义理解。例如，可以是固定连接，也可以是可拆卸连接，或一体地连接。可以是机械连接，也可以是电连接，可以是直接连接，也可以通过中间媒介间接连接，可以是两个元件内部的连通。对于本领域的技术人员而言，可以根据情况理解上述术语在本发明中的具体含义。
本发明第一方面实施例提供了扫地机器人的风机组件，参见图3～5所示，本发明实施例 的扫地机器人的风机组件包括电机10、定叶轮20、动叶轮30和风罩40；定叶轮20设有轴孔25，电机10安装在定叶轮20的一侧，电机10的输出轴11穿过轴孔25；风罩40安装在定叶轮20的另一侧，风罩40远离定叶轮20的端面设有进风口41；动叶轮30安装在电机10的输出轴11上，且位于风罩40和定叶轮20之间。
本实施例中，电机10的输出轴11从位于定叶轮20中心的轴孔25中穿过，并与动叶轮30的中心相连以带动动叶轮30旋转。轴孔25的外径大于输出轴11的外径。风罩40一端端面安装在定叶轮20上，另一端端面设有进风口41。动叶轮30设置风罩40内并位于进风口41和动叶轮30之间。由此，风罩40的尺寸只需略大于动叶轮30，风机组件各部件之间结构紧凑，能够有效减小风机组件高度，以便更好地满足扫地机器人对低高度的要求。定叶轮20对进入风机组件中的空气气流进行导向，有效提升了风机组件的真空度和吸力。
在本发明一个可选的实现方式中，风罩40的形状为与动叶轮30相配合的圆筒形，进风口41为圆形，进风口41的直径与风罩40或动叶轮30的直径比的取值范围为1/5～4/5。进一步地，进风口41的直径与风罩40的直径比为2/5。
相同电机10功率下，进风口41的直径与风罩40或动叶轮30的直径比为1/5～4/5时，风机组件的吸力相对较大。图4示例性地示出了扫地机器人的风机组件的一个可选结构的剖视图，其中，进风口41的直径为28mm，风罩40直径为69mm，进风口41、风罩40、动叶轮30、定叶轮20和电机10均同轴设置。
在本发明另一个可选的实现方式中，定叶轮20包括叶轮前盘、叶轮后盘和若干叶片22；叶轮前盘包括圆板21和环边29，环边29设置在圆板21的周边且朝向电机10的方向延伸，轴孔25位于圆板21中心；叶轮后盘包括底板23和第一凸边27，底板23中间开设第一圆孔28，第一凸边27沿第一圆孔28的周边设置在底板23上，且朝向风罩40的方向延伸；若干叶片22间隔固定在环边29和第一凸边27之间，若干叶片22之间的间隙形成若干导风通道。
进入风机组件中的气流在叶片22的导向下由第一圆孔28排出。若干叶片22沿定叶轮20轴线均匀间隔设置，叶片22的数量可根据需要进行调整。定叶轮20上还设有若干个走线缺口60，走线缺口60便于风机组件线束的安装和定位。图5示例性地示出了扫地机器人的风机组件的爆炸图，其中，定叶轮20上的走线缺口60位于底板23上。
在本发明一个可选的实现方式中，扫地机器人的风机组件还包括第一紧固件(未图示)，电机10上设有第一安装孔12，圆板21上设有与第一安装孔12相对应的第二安装孔26，第一紧固件穿设于第一安装孔12和第二安装孔26，以将电机10紧固连接在定叶轮20的一侧。
为了保证定叶轮20和电机10连接的稳固性，第一紧固件、第一安装孔12和第二安装 孔26可以根据需要设置若干个。第一紧固件包括但不限于螺栓和螺钉。如图5所示，电机10的端面沿周向设有间隔均匀的三个第一安装孔12，叶轮前盘21沿周向设有三个与第一安装孔12一一对应的第二安装孔26，将紧固件穿设第一安装孔12和第二安装孔26以将定叶轮20固定在电机10上。
在本发明另一个可选的实现方式中，风罩40套设在第一凸边27外侧，风罩40与第一凸边27过盈配合。
如图3和图5所示，风罩40通过与第一凸边27过盈配合固定在定叶轮20上。安装方式简单方便。
在本发明另一个可选的实现方式中，扫地机器人的风机组件还包括支座50和第二紧固件，定叶轮20安装在支座50上；支座50包括基板51和第一支脚52，基板51中间开设第二圆孔54，基板51沿第二圆孔54径向的两端分别设置第一支脚52；叶轮后盘还包括沿第一圆孔28径向的两端分别设置的第二支脚24，第二紧固件穿过第一支脚52和第二支脚24，以将定叶轮20紧固连接在支座50上。
支座50优选由具有降噪减震功能的材料制作，如支座50为橡胶件。由于定叶轮20与电机10相连，电机10处于工作状态时，电机10自身或电机10与定叶轮20之间会震动，产生噪音，支座50能够吸收声波，降低震动及噪音。为了便于定位和安装风机组件线束，支座50上也可根据需要设置走线缺口60。第二紧固件包括但不限于螺栓和螺钉。如图3所示，沿基板51周向间隔设有三个走线缺口60，电机10穿过第二圆孔54与定叶轮20相连，支座50围设在电机10四周，有利于提高降噪效果。
在本发明另一个可选的实现方式中，第一支脚52上设有凸块53，第二支脚24上设有与凸块53相配合的凹槽，凸块53伸入凹槽内。
将凸块53伸入凹槽中可以完成初步装配，便于安装定位。第二紧固件提高了两者连接的稳固性。图5示例性地示出了扫地机器人的风机组件一种可选结构的爆炸图，其中，每一个第一支脚52上均设置一个凸块53，凸块53朝向定叶轮20凸出。
在本发明一个可选的实现方式中，叶轮后盘还包括第二凸边201，第二凸边201沿第一圆孔28的周边设置在底板23上，且朝向电机10的方向延伸；基板51沿第二圆孔54的周边设有与第二凸边201相配合的环槽55，第二凸边201扣入环槽55内。
第二凸边201扣入环槽55内不仅能够使定叶轮20与支座50的配合更紧凑，还能够提高密封效果，减少风机组件内气流外流，提高风机组件吸力。
根据本发明第二方面实施例的扫地机器人包括上述实施例所述的扫地机器人的风机组件。由于根据本发明实施例的扫地机器人的风机组件具有上述效果，因此，根据本发明实施 例的扫地机器人也具有相应的技术效果，即结构紧凑。定叶轮20能够有效对空气气流进行导向，使风机组件出风更加顺畅，风向更显著，提高了风机组件的吸力，提高了扫地机器人的吸地效果和吸地效率。
根据本发明实施例的扫地机器人的其他结构和操作对于本领域技术人员而言都是可以理解并且容易实现的，因此不再详细描述。
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。

Claims (10)

  1. 一种扫地机器人的风机组件，其特征在于，所述扫地机器人的风机组件包括：电机、定叶轮、动叶轮和风罩；所述定叶轮设有轴孔，所述电机安装在所述定叶轮的一侧，所述电机的输出轴穿过所述轴孔；所述风罩安装在所述定叶轮的另一侧，所述风罩远离所述定叶轮的端面设有进风口；所述动叶轮安装在所述电机的输出轴上，且位于所述风罩和所述定叶轮之间。
  2. 根据权利要求1所述的扫地机器人的风机组件，其特征在于，所述风罩的形状为与所述动叶轮相配合的圆筒形，所述进风口为圆形，所述进风口的直径与所述风罩或所述动叶轮的直径比的取值范围为1/5～4/5。
  3. 根据权利要求2所述的扫地机器人的风机组件，其特征在于，所述进风口的直径与所述风罩的直径比为2/5。
  4. 根据权利要求1-3中任一项所述的扫地机器人的风机组件，其特征在于，所述定叶轮包括叶轮前盘、叶轮后盘和若干叶片；
    所述叶轮前盘包括圆板和环边，所述环边设置在所述圆板的周边且朝向所述电机的方向延伸，所述轴孔位于所述圆板中心；
    所述叶轮后盘包括底板和第一凸边，所述底板中间开设第一圆孔，所述第一凸边沿所述第一圆孔的周边设置在所述底板上，且朝向所述风罩的方向延伸；
    若干所述叶片间隔固定在所述环边和所述第一凸边之间，若干所述叶片之间的间隙形成若干导风通道。
  5. 根据权利要求4所述的扫地机器人的风机组件，其特征在于，所述扫地机器人的风机组件还包括第一紧固件，所述电机上设有第一安装孔，所述圆板上设有与所述第一安装孔相对应的第二安装孔，所述第一紧固件穿设于所述第一安装孔和所述第二安装孔，以将所述电机紧固连接在所述定叶轮的一侧。
  6. 根据权利要求4或5所述的扫地机器人的风机组件，其特征在于，所述风罩套设在所述第一凸边外侧，所述风罩与所述第一凸边过盈配合。
  7. 根据权利要求4或5所述的扫地机器人的风机组件，其特征在于，所述扫地机器人的风机组件还包括支座和第二紧固件，所述定叶轮安装在所述支座上；
    所述支座包括基板和第一支脚，所述基板中间开设第二圆孔，所述基板沿所述第二圆孔径向的两端分别设置所述第一支脚；
    所述叶轮后盘还包括沿所述第一圆孔径向的两端分别设置的第二支脚，所述第二紧固件穿过所述第一支脚和所述第二支脚，以将所述定叶轮紧固连接在所述支座上。
  8. 根据权利要求7所述的扫地机器人的风机组件，其特征在于，所述第一支脚上设有凸块，所述第二支脚上设有与所述凸块相配合的凹槽，所述凸块伸入所述凹槽内。
  9. 根据权利要求7或8所述的扫地机器人的风机组件，其特征在于，所述叶轮后盘还包括第二凸边，所述第二凸边沿所述第一圆孔的周边设置在所述底板上，且朝向所述电机的方向延伸；
    所述基板沿所述第二圆孔的周边设有与所述第二凸边相配合的环槽，所述第二凸边扣入所述环槽内。
  10. 一种扫地机器人，其特征在于，包括权利要求1-9中任一项所述的扫地机器人的风机组件。
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US20190368507A1 (en) 2019-12-05
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EP3779203A1 (en) 2021-02-17
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