WO2016026224A1 - 一种复式平衡环及洗衣机 - Google Patents

一种复式平衡环及洗衣机 Download PDF

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Publication number
WO2016026224A1
WO2016026224A1 PCT/CN2014/091151 CN2014091151W WO2016026224A1 WO 2016026224 A1 WO2016026224 A1 WO 2016026224A1 CN 2014091151 W CN2014091151 W CN 2014091151W WO 2016026224 A1 WO2016026224 A1 WO 2016026224A1
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WIPO (PCT)
Prior art keywords
chamber
balance ring
balance
partition
liquid
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Application number
PCT/CN2014/091151
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English (en)
French (fr)
Inventor
万国胜
杨景利
冯泉城
张显
邵长城
Original Assignee
海尔集团公司
青岛海尔洗衣机有限公司
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.)
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Application filed by 海尔集团公司, 青岛海尔洗衣机有限公司 filed Critical 海尔集团公司
Priority to US15/504,543 priority Critical patent/US10358759B2/en
Priority to KR1020177007320A priority patent/KR102342436B1/ko
Priority to JP2017505542A priority patent/JP2017525453A/ja
Priority to EP14900245.3A priority patent/EP3184686B1/en
Publication of WO2016026224A1 publication Critical patent/WO2016026224A1/zh

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/24—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a vertical axis
    • D06F37/245—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/32—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels
    • F16F15/36—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically, i.e. where, for a given amount of unbalance, there is movement of masses until balance is achieved
    • F16F15/366—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically, i.e. where, for a given amount of unbalance, there is movement of masses until balance is achieved using fluid or powder means, i.e. non-discrete material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/0011—Balancing, e.g. counterbalancing to produce static balance

Definitions

  • the invention relates to an inner barrel leveling device in the field of washing machines, in particular to a double balance ring and a washing machine equipped with the double balance ring.
  • a washing machine balance ring comprising a lower balance ring and an upper balance ring fastened to the lower balance ring, wherein the upper balance ring and the lower balance ring are formed with an empty balance liquid, as in the Chinese Patent Application No. 201220447545.3.
  • a cavity wherein the cavity is radially disposed with a balance piece, and the balance pieces are disposed at equal intervals.
  • the balance ring itself is eccentrically generated at the time of dehydration startup, and some modifications are provided by those skilled in the art.
  • the balance ring device of the Chinese patent document drum type washing machine of the application No. 200910158225.9 discloses a balance ring device of a drum type washing machine, wherein the balance ring device is provided by at least two annular cavities disposed on the edge of the drum coaxially with the drum. a chamber composition, wherein at least one of the chambers is a ball balance ring provided with a ball, and at least one of the chambers is a liquid balance ring provided with a flow balance liquid, which is respectively generated by using two different balances of a ball and a balance liquid. At least two balancing forces with different reaction speeds, thereby improving the balance of rotation of the washing machine drum when it is dehydrated.
  • the present invention has been made in view of the above.
  • the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a double balance ring with simple structure and low cost, so as to achieve the purpose of correcting the problem of inner cylinder eccentricity when the washing machine is dehydrated.
  • the basic idea of adopting the technical solution of the present invention is: a double balance ring, the balance ring is hollow inside to form a chamber; the chamber is horizontally provided with a partition to divide the chamber into upper a chamber and a lower chamber; the upper chamber and the lower chamber are in communication with an overflow structure and a reflux structure; the chamber is filled with an equilibrium liquid having a liquid surface close to the partition.
  • the overflow structure is disposed away from the center of the balance ring with respect to the reflow structure.
  • the overflow structure is an overflow gap formed between the outer periphery of the partition and the side wall of the chamber, so that the balance liquid in the lower chamber overflows into the upper chamber.
  • the inner circumference of the partition is closely arranged with the side wall of the chamber; or a certain back water gap is disposed between the inner circumference of the partition and the side wall of the chamber to form a reflow structure for returning the balance liquid to the lower chamber.
  • a return port constituting the reflow structure is disposed near the inner circumference of the partition plate; preferably, the partition plate is provided with an annular groove to constitute a flow passage overflowing to the balance liquid in the upper chamber; further preferred The bottom of the annular groove is provided with a return port constituting a reflow structure, and the balance liquid overflowing into the upper chamber is returned to the lower chamber.
  • the return port is disposed at the bottom of the groove near the center of the balance ring.
  • the level of the equilibrium liquid in the injection chamber is flush with the separator.
  • the balance ring is formed by the upper casing and the lower casing being fastened to form a cavity having a certain area in a cross section.
  • the lower chamber is provided with a plurality of lower water retaining ribs symmetrically disposed with respect to the center of the balance ring; preferably, the upper chamber is provided with a plurality of upper water retaining ribs symmetrically disposed with respect to the center of the balance ring; further preferably Each upper water retaining rib and each lower water retaining rib are arranged to cross each other, and each upper water retaining rib and each lower water retaining rib extend in a radial direction of the balance ring.
  • each of the lower water retaining ribs is disposed radially along the lower chamber, and an upper portion of the lower water retaining rib is provided with an opening for the balance liquid to pass through, and the side portions on both sides of the opening are respectively supported by the inner and outer peripheral portions of the partition, the opening and the opening
  • the grooves of the partition are matched.
  • a positioning structure is arranged between the partition plate and the lower casing, so that the partition plate is fixedly mounted on the upper portion of the water retaining rib.
  • the positioning structure comprises a mounting post disposed on the lower casing and a mounting hole disposed on the partition plate, wherein the mounting post is a cylindrical protrusion extending vertically upward from the bottom of the lower chamber, and is separated by The plate is placed horizontally on the mounting post by mounting holes on the mounting post.
  • the positioning structure includes a mounting post disposed on the lower case and a mounting hole disposed on the partition plate.
  • the pin is connected and fixed to the pin shaft of the lower case.
  • the mounting post is formed by a cylindrical protrusion extending vertically upward from the bottom of the lower chamber, and the mounting hole is matched with the mounting post, and the mounting post is fixedly connected with the mounting hole pin to be placed in the block.
  • the partition on the upper part of the rib is positioned and installed.
  • the lower chamber is provided with a plurality of mounting columns symmetrically disposed with respect to the center of the balance ring, and the partition plate is provided with mounting holes respectively corresponding to the mounting posts.
  • Another object of the present invention is to provide a washing machine equipped with a double balance ring as described above.
  • balance ring is installed at an opening in the upper portion of the inner tub of the washing machine.
  • the existing washing machine that provides the correcting force balance ring by the balance liquid has an eccentric displacement of the inner barrel due to uneven distribution of the load in the inner tub during the dehydration start, and the balance ring is caused to generate an eccentric tilt, so that the balance liquid in the balance ring chamber is The tilting direction is gathered, so that the unbalanced eccentric displacement of the inner tub is increased, and the unbalance torque of the motor is increased when the inner tub is dehydrated.
  • the balance liquid in the lower chamber is collected in an oblique direction, and the overflow structure formed by the gap between the outer periphery of the partition and the chamber overflows into the upper chamber.
  • the gap constituting the overflow structure is narrow, the overflow speed of the balance liquid is slow.
  • the balance liquid remaining in the lower chamber provides a counterweight force to the inner tub, and the occurrence of an increase in the eccentric displacement of the inner tub due to the eccentric flow of the balance liquid is avoided.
  • the balance liquid remaining in the lower chamber rotates with the inner tub, so that the balance liquid flows close to the side wall of the chamber under the action of centrifugal force, and the balance liquid collected at the side wall of the chamber passes through the overflow structure.
  • the balance liquid in the lower chamber gradually overflows into the upper chamber and flows close to the outer side wall of the partition to provide a correcting force for the inner barrel eccentricity.
  • the balance liquid in the upper chamber is collected to the groove provided on the partition plate, and is returned to the lower chamber through the return port provided on the side wall of the groove adjacent to the side of the balance ring.
  • the invention adds the partition plate separating the chambers on the basis of the existing balance ring of the washing machine, thereby realizing the purpose of providing the weighting action and the correcting action respectively in the dewatering start and dehydration process of the balance liquid in the balance ring.
  • the balance ring has a simple structure, a simple process, a small design area, and low cost.
  • the balance ring of the invention is not limited by the amount of the balance liquid, which not only solves the problem of the eccentric flow of the balance liquid during the dehydration start process, but also improves the correcting effect of the eccentricity of the inner barrel during the dehydration process.
  • the partitioning baffle is disposed in the balance ring, the balance ring has the function of the weight of the washing machine.
  • the invention has simple structure and remarkable effect, and is suitable for popularization. use.
  • Figure 1 is a schematic exploded view of the structure of the balance ring of the present invention
  • Figure 2 is a schematic structural view of the balance ring
  • Figure 3 is a schematic view of the structure of the partition
  • Figure 4 is a schematic structural view of the balance ring
  • Figure 5 is a schematic structural view of the balance ring of the present invention.
  • Figure 6 is a schematic view showing the installation of the lower balance ring and the partition plate of the present invention.
  • Figure 7 is a cross-sectional view taken along line A-A of Figure 5 of the present invention.
  • Figure 8 is an enlarged schematic view of a portion B of Figure 7 in the present invention.
  • Figure 9 is an enlarged schematic view of a portion C of Figure 6 in the present invention.
  • Figure 10 is an enlarged schematic view of the portion D of Figure 6 in the present invention.
  • a washing machine comprising an inner tub installed in an outer tub at an acute angle or coincidence with an axis and a vertical direction, and a balance ring is mounted at an upper opening of the inner tub.
  • the balance ring is composed of an upper casing 1 and a lower casing 2 that are fastened to each other to form an annular balance ring that cooperates with the opening of the inner tub.
  • the upper casing 1 and the lower casing 2 are respectively formed of annular plates having a "concave” shape in cross section; and the upper casing 1 and the lower casing 2 are relatively fastened and mounted.
  • the opening of the "concave" annular plate material constituting the upper casing 1 and the lower casing 2 is opposed to each other to form an annular balance ring having a "mouth” shape in cross section, and the hollow portion of the balance ring is formed in an annular shape.
  • Chamber 4 The balance ring is provided with a liquid injection port 11 for injecting a balance liquid into the chamber 4 of the balance ring, and the balance liquid is composed of salt water.
  • the liquid inlet 11 is provided at the center of the bottom of the "concave" annular sheet material constituting the upper casing 1.
  • the liquid inlet 11 is formed by a through hole and is provided to match the liquid inlet 11
  • a detachable cover is provided to ensure the airtightness of the balance ring chamber 4.
  • a partition 3 is horizontally disposed in the chamber 4 of the balance ring, and the chamber 4 is divided into two parts, an upper chamber 41 and a lower chamber 42.
  • the partition 3 is disposed on the upper casing 1 and the lower casing 2. Fasten the joint.
  • the height of the balance liquid liquid injected into the chamber 4 is close to the height of the partition plate 3, so that the difference between the liquid level height of the balance liquid and the height of the partition plate is not more than one fifth of the height of the chamber;
  • the liquid level of the balance liquid is flush with the lower surface of the separator 3.
  • the partition plate 3 is formed by an annular plate material that cooperates with the chamber 4, and the inner circumferential diameter of the partition plate 3 is matched with the inner peripheral side wall of the chamber 4 to make the partition plate 3
  • the inner peripheral side is in close contact with the inner peripheral side wall of the chamber 4;
  • the outer peripheral diameter of the partition 3 is slightly smaller than the peripheral diameter of the outer peripheral side wall of the chamber 4, so that the outer peripheral side of the partition 3 and the outer peripheral side of the chamber 4
  • An overflow gap 43 is formed between the upper and lower chambers.
  • the width of the overflow gap 43 is not more than one fifth of the width of the chamber 4; that is, the width of the overflow gap 43 is not more than a quarter of the width of the partition 3.
  • An annular groove 31 is formed in the partition plate 3 and protrudes downward in the axial direction of the partition plate to constitute an annular flow path of the balance liquid.
  • the bottom of the recess 31 is provided with a return port 32 communicating with the upper and lower chambers, and the return port 32 is provided at the bottom of the recess 31.
  • the groove 31 is provided with at least two circular arc-shaped return ports 32, and each of the return ports 32 is symmetrically disposed with respect to the center of the balance ring.
  • the annular plate material constituting the partition plate 3 is inclined from the inner circumferential side and the outer circumferential side toward the bottom of the groove 31 provided thereon, so as to overflow to the upper chamber 41 after the washing machine stops dehydration and the inner tub gradually stops rotating.
  • the balance liquid in the flow can be returned to the lower chamber 42 by gravity.
  • the inner bucket When the washing machine with the balance ring installed is dehydrated, the inner bucket is eccentrically displaced due to the uneven distribution of the load in the inner tub, and the balance ring is driven to generate an eccentric tilt, so that the balance liquid in the lower chamber of the balance ring is collected in an oblique direction.
  • the overflow structure formed by the gap between the outer circumference and the chamber overflows into the upper chamber.
  • the overflow speed of the balance liquid is slow. Thereby, the balance liquid remaining in the lower chamber provides a counterweight force to the inner tub, and the occurrence of an increase in the eccentric displacement of the inner tub due to the eccentric flow of the balance liquid is avoided.
  • the balance liquid remaining in the lower chamber rotates with the inner tub, so that the balancing liquid is sucked into the upper chamber through the overflow structure under the action of centrifugal force.
  • the balance liquid in the lower chamber gradually overflows into the upper chamber and flows close to the outer side wall of the partition to provide a correcting force for the inner barrel eccentricity.
  • the balance liquid in the upper chamber is collected to the groove provided on the partition plate, and is returned to the lower chamber through the return port provided on the side wall of the groove adjacent to the side of the balance ring.
  • the balance ring is provided with a water retaining rib protruding into the chamber to increase the resistance of the balance liquid flowing in the balance ring, thereby improving the correcting effect.
  • the water retaining rib includes a plurality of lower water retaining ribs 21 disposed in the lower casing 2 .
  • the respective lower water retaining ribs 21 are respectively disposed along the radial direction of the balance ring and are symmetrical with respect to the center of the balance ring.
  • Each of the lower water retaining ribs 21 is composed of a "U" shaped rib protruding from the inner wall of the lower casing 2 into the chamber 4 and radially disposed along the balance ring.
  • the water retaining rib further comprises a plurality of upper water retaining ribs 12 symmetrically distributed with respect to the center of the balance ring disposed in the upper casing 1.
  • Each of the upper water retaining ribs 12 is respectively disposed on the outer peripheral inner wall of the upper chamber 12 and extends in the radial direction of the balance ring to block the balance liquid flowing close to the outer peripheral inner wall of the upper chamber 12 when the washing machine is dehydrated. The force increases the correcting force of the balance ring.
  • the partition plate 3 is attached to the upper portion of the opening side of the lower water retaining rib 21, and preferably, the width of the groove 31 provided in the partition plate 3 is smaller than the opening width of the lower water retaining rib 21.
  • the height of the opening side of the lower water retaining rib 21 is slightly lower than the height of the opening side of the lower casing 2.
  • the open sides of the respective water retaining ribs 21 are all in the same horizontal plane. Therefore, after the partition plate 3 is placed above the opening side of each of the lower water retaining ribs 21, a horizontal state is formed to avoid causing the entire balance ring to be unbalanced.
  • a circular groove 31 is formed in the partition 3 to form a flow path of the balance liquid.
  • the width of the groove 31 is not less than one-half of the width of the partition; the depth of the groove is not more than one-fifth the depth of the lower chamber 4.
  • the return port 32 is disposed at the bottom of the groove 31 near the center of the balance ring.
  • the partition plate 3 is provided with a plurality of return ports 32, and the axes of the return ports 32 are all extended along the sidewall direction of the groove 31.
  • each of the return ports 32 is symmetric with respect to the center of the balance ring distributed.
  • the side wall of the groove 31 near the center of the balance ring is in contact with the inner peripheral side wall of the chamber 4, and the bottom of the groove 31 is connected to the side wall of the groove 31.
  • a return port 32 is provided.
  • the width of the return port 32 is not less than one third of the width of the bottom of the groove 31, and not more than one-half.
  • the partition plate 3 is placed on the upper portion of the lower water retaining rib 21 provided in the lower casing 2.
  • the lower housing 2 is provided with a mounting post 22 that is pinned to the partition 3, and the mounting post 22 is vertically aligned from the bottom of the lower housing 2 into the chamber 4.
  • the extended cylindrical protrusion is formed; preferably, the cross-sectional radius of the mounting post 22 gradually increases from top to bottom.
  • the partition plate 3 is provided with a mounting hole 33 that cooperates with the mounting post 22, and the partition plate 3 is fitted on the mounting post 22 through the mounting hole 33 to realize the horizontal positioning of the upper portion of the water retaining rib.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

一种复式平衡环及洗衣机，所述平衡环内部中空以构成腔室（4）；所述的腔室（4）内水平设有隔板（3），将腔室（4）分为上腔室（41）和下腔室（42）；所述上腔室（41）与下腔室（42）经溢流结构和回流结构相连通；所述腔室（4）中注有液面接近隔板（3）的平衡液。通过在洗衣机上安装上述的平衡环，使得洗衣机在脱水过程中，下腔室（42）中的平衡液由构成溢流结构的较窄缝隙处以较低的溢流速度溢流至上腔室（41）中，留存在下腔室（42）中的平衡液对内桶提供一配重作用，避免因平衡液偏心流动导致内桶偏心位移加大情况的发生。

Description

一种复式平衡环及洗衣机 技术领域
本发明涉及洗衣机领域的一种内桶调平装置，尤其涉及一种复式平衡环及装有该复式平衡环的洗衣机。
背景技术
洗衣机在脱水时经常由于衣物放置偏心而产生较大的振动，当偏心值超过一定限值时会出现持续打箱体的问题，用户对此抱怨较多。普通波轮洗衣机一般都会在平衡环中增加平衡液来减小振动，但是如果平衡液的量太多，在脱水启动时平衡环本身也会产生偏心，不利于系统平衡。
如申请号为201220447545.3的中国专利文件一种洗衣机平衡环，包括有下平衡环和扣合在下平衡环上的上平衡环，所述的上平衡环和下平衡环形成有容置平衡液的空腔，所述的空腔内径向设置有平衡片，所述的平衡片等间距设置。
为了避免因平衡环中平衡液的量加入太多，导致平衡环本身在脱水启动时产生的偏心，现有技术人员也提供了一些改进方案。
如申请号为200910158225.9的中国专利文件滚筒式洗衣机的平衡环装置，公开了一种滚筒式洗衣机的平衡环装置,所述的平衡环装置由与滚筒同轴设置在滚筒边沿的至少两条环形腔室组成,其中至少一条腔室为设有滚球的球体平衡环,且至少有一条腔室为设有流动平衡液的液体平衡环,利用滚球和平衡液两种不同的平衡物,分别产生至少两种反应速度不同的平衡力,进而改善洗衣机滚筒脱水时转动的平衡状态。但是，由于上述方案中构成平衡环的多条独立腔室中依然填充有具有一定重量的平衡物。在平衡物重量达到一定值后，洗衣机脱水启动时，平衡环中的平衡物依然会产生偏心作用力，不利于脱水启动瞬间的调平。
有鉴于此特提出本发明。
发明内容
本发明要解决的技术问题在于克服现有技术的不足，提供一种结构简单、成本低的复式平衡环，以达到纠正洗衣机脱水时内桶偏心问题的目的。
为解决上述技术问题，本发明采用技术方案的基本构思是：一种复式平衡环，所述平衡环内部中空以构成腔室；所述的腔室内水平设有隔板，将腔室分为上腔室和下腔室；所述上腔室与下腔室经溢流结构和回流结构相连通；所述腔室中注有液面接近隔板的平衡液。
进一步，溢流结构相对回流结构远离平衡环中心设置。
进一步，溢流结构为隔板外周与腔室侧壁间形成的溢水间隙，以供下腔室中的平衡液溢流至上腔室中。
进一步，隔板内周与腔室侧壁紧贴设置；还可以，将隔板内周与腔室侧壁间设置一定回水间隙，以构成供平衡液回流至下腔室的回流结构。
进一步，靠近隔板内周处设有构成回流结构的回流口；优选的，所述的隔板上设有环形凹槽，以构成溢流至上腔室中的平衡液的流道；进一步优选的，环形凹槽的底部设有构成回流结构的回流口，将溢流至上腔室中的平衡液回流到下腔室中。
进一步，所述的回流口设于靠近平衡环中心一侧的凹槽底部。
进一步，注入腔室中的平衡液液面与隔板相平齐。
进一步，所述的平衡环由上壳体和下壳体扣合构成，以形成横断面具有一定面积的腔室。
进一步，所述的下腔室中设有多条相对平衡环中心对称设置的下挡水筋；优选的，上腔室中设有多条相对平衡环中心对称设置的上挡水筋；进一步优选的，各上挡水筋与各下挡水筋相互交叉排布，各上挡水筋和各下挡水筋均沿平衡环的径向延伸。
进一步，所述的隔板置于挡水筋上部。优选的，各下挡水筋均沿下腔室径向设置，下挡水筋的上部设有供平衡液通过的开口，开口两侧的侧边部分别供隔板内外周部支撑，开口与隔板的凹槽相配合设置。
进一步，隔板与下壳体间设有定位结构，以使隔板固定安装在挡水筋上部。
进一步，所述的定位结构包括，设于下壳体上的安装柱和设于隔板上的安装孔，所述的安装柱为由下腔室底部竖直向上延伸的圆柱状凸起，隔板通过安装孔套装在安装柱上实现在挡水筋上部的水平定位。
进一步，所述的定位结构包括，设于下壳体上的安装柱和设于隔板上的安装孔， 以形成隔板与下壳体的销轴连接固定。
进一步，所述的安装柱为由下腔室底部竖直向上延伸的圆柱状凸起构成，所述的安装孔与安装柱相配合，将安装柱与安装孔销轴连接固定，使置于挡水筋上部的隔板定位安装。
进一步，所述下腔室上设有多个相对平衡环中心对称设置的安装柱，所述隔板上设有与各安装柱分别相对应配合安装的安装孔。
本发明的另一目的在于提供一种装有如上任一所述复式平衡环的洗衣机。
进一步，所述的平衡环安装在洗衣机内桶上部的开口处。
现有的由平衡液提供纠偏作用力平衡环的洗衣机在脱水启动时，因内桶中负载衣物分布不均匀导致内桶产生偏心位移，带动平衡环产生偏心倾斜，使得平衡环腔室中的平衡液向倾斜方向汇集，使得内桶的不平衡偏心位移加大，令内桶脱水启动时电机的不平衡扭矩加大。
而装有本申请中平衡环的洗衣机在脱水启动时，下腔室中的平衡液向倾斜方向汇集，经隔板外周与腔室间的间隙构成的溢流结构溢流至上腔室中。但是，由于构成溢流结构的缝隙较窄，使得平衡液的溢流速度较慢。从而，使得留存在下腔室中的平衡液对内桶提供一配重作用力，避免了内桶因平衡液偏心流动导致的内桶偏心位移加大现象的发生。
在洗衣机脱水启动后，留存在下腔室中的平衡液随内桶旋转，使得平衡液在离心力的作用下紧贴腔室侧壁流动，汇集至腔室侧壁处的平衡液经溢流结构甩至上腔室中。随着洗衣机脱水的进行，下腔室中的平衡液逐渐溢流入上腔室中，并紧贴隔板外侧侧壁流动，以为内桶偏心提供纠偏作用力。在洗衣机脱水程序完成后，上腔室中的平衡液汇集至隔板上所设凹槽处，并经凹槽靠近平衡环一侧侧壁上设置的回流口回流至下腔室中。
本发明在现有的洗衣机平衡环的基础上加装将腔室分隔的隔板，就实现了平衡环中的平衡液在脱水启动和脱水过程中分别提供配重作用和纠偏作用的目的。该平衡环结构简单，工艺简单，设计面积小，成本低廉。通过加装隔板，使得本发明中平衡环不受平衡液量的限制，既解决了脱水启动过程中平衡液偏心流动问题，又提高了脱水过程中内桶偏心的纠偏效果。本发明由于平衡环中设置一分隔挡板，使得平衡环具有了洗衣机配重的功能。同时，本发明结构简单，效果显著，适宜推广使 用。
下面结合附图对本发明的具体实施方式作进一步详细的描述。
附图说明
图1本发明平衡环的结构爆炸示意图；
图2上平衡环的结构示意图；
图3隔板的结构示意图；
图4下平衡环的结构示意图；
图5本发明平衡环的结构示意图；
图6本发明下平衡环和隔板的安装示意图；
图7本发明中图5的A-A断面图；
图8本发明中图7的B处放大示意图；
图9本发明中图6的C处放大示意图；
图10本发明中图6的D处放大示意图。
主要元件说明：1—上壳体，2—下壳体，3—隔板，4—腔室，11—注液口，12—上挡水筋，21—下挡水筋，22—安装柱，31—凹槽,32—回流口，33—安装孔，41—上腔室，42—下腔室，43—溢水间隙
具体实施方式
下面结合实施例对本发明进行进一步详细的说明。
一种洗衣机，包括安装在外桶中的、轴线与竖直方向成锐角或重合的内桶，内桶上部开口处安装有平衡环。
如图1至图5所示，所述平衡环由相互扣合在一起的上壳体1和下壳体2构成，以形成与内桶开口相配合的圆环状平衡环。
如图2和图4所示，所述的上壳体1与下壳体2分别由横断面呈“凹”形的环状板材构成；将上壳体1与下壳体2相对扣合安装，使构成上壳体1与下壳体2的“凹”形环状板材的开口相对设置，以构成横断面成“口”形的圆环状平衡环，平衡环的中空部构成圆环状腔室4。平衡环上设有注液口11，以向平衡环的腔室4内注入平衡液，所述的平衡液由盐水构成。所述的注液口11设于构成上壳体1的“凹”形环状板材的底部中心处。所述的注液口11由通孔构成，并设有与注液口11相配 合的、可拆卸的盖，以保证平衡环腔室4的密闭性。
平衡环的腔室4内水平设有隔板3，将腔室4分为上腔室41和下腔室42两部分；优选的，隔板3设于上壳体1和下壳体2的扣合连接处。所述的腔室4中注入的平衡液液面高度与隔板3高度相接近，使平衡液的液面高度与隔板的高度之间的差值不大于腔室高度的五分之一；优选的，所述平衡液的液面与隔板3的下表面相平齐。
如图3所示，所述的隔板3由与腔室4相配合的环状板材构成，隔板3的内周径与腔室4的内周侧壁相配合设置，使隔板3的内周侧与腔室4的内周侧壁紧密贴合；隔板3的外周径稍小于腔室4的外周侧壁的周径，使隔板3的外周侧与腔室4的外周侧壁间形成连通上下腔室的溢水间隙43。所述溢水间隙43的宽度不大于腔室4宽度的五分之一；即溢水间隙43的宽度不大于隔板3宽度的四分之一。
隔板3上向下凸出的、沿隔板轴向设有圆环状的凹槽31，以构成平衡液的环形流道。凹槽31的底部设有连通上下腔室的回流口32，所述回流口32设于构成凹槽31的最底部。优选的，凹槽31上设有至少两个圆弧形回流口32，各回流口32相对平衡环中心对称设置。
优选的，构成隔板3的环状板材，分别由内周侧和外周侧向其上所设凹槽31底部倾斜，以在洗衣机停止脱水、内桶逐渐停止旋转后，使得溢流至上腔室41中的平衡液可在重力作用下回流至下腔室42中。
安装上述平衡环的洗衣机在脱水启动时，因内桶中负载衣物分布不均匀导致内桶产生偏心位移，带动平衡环产生偏心倾斜，使得平衡环下腔室中的平衡液向倾斜方向汇集，经隔板外周与腔室间的间隙构成的溢流结构溢流至上腔室中。但是，由于构成溢流结构的缝隙较窄，使得平衡液的溢流速度较慢。从而，使得留存在下腔室中的平衡液对内桶提供一配重作用力，避免了内桶因平衡液偏心流动导致的内桶偏心位移加大现象的发生。
在洗衣机脱水启动后，留存在下腔室中的平衡液随内桶旋转，使得平衡液在离心力的作用下经溢流结构甩至上腔室中。随着洗衣机脱水的进行，下腔室中的平衡液逐渐溢流入上腔室中，并紧贴隔板外侧侧壁流动，为内桶偏心提供纠偏作用力。在洗衣机脱水程序完成后，上腔室中的平衡液汇集至隔板上所设凹槽处，并经凹槽靠近平衡环一侧侧壁上设置的回流口回流至下腔室中。
实施例一
本实施例中，平衡环上设有向腔室内凸出的挡水筋，以增加平衡液在平衡环内流动的阻力，提高纠偏效果。
如图7和图8所示，本实施例中，所述的挡水筋包括，设于下壳体2中的多条下挡水筋21。各条下挡水筋21分别沿平衡环的径向设置，并相对平衡环中心对称。各条下挡水筋21分别由自下壳体2内壁向腔室4内凸出的、沿平衡环径向设置的“U“形凸筋构成。所述的“U“形凸筋的开口侧朝向构成下壳体的”凹”形环状板材的开口侧设置，以使得下腔室42中的平衡液随洗衣机脱水旋转时，一部分自下挡水筋21的开口处穿过下挡水筋21，另一部分被下挡水筋21阻挡，以形成内桶的纠偏作用力。优选的，挡水筋还包括，设于上壳体1中的多条相对平衡环中心对称分布的上挡水筋12。各上挡水筋12分别设于上腔室12的外周内壁上、沿平衡环的径向向腔室内延伸，以在洗衣机脱水时，对紧贴上腔室12外周内壁流动的平衡液提供阻挡作用力，提高平衡环的纠偏作用力。
如图8所示，本实施例中，隔板3安装于下挡水筋21的开口侧上部，优选的，隔板3上设置的凹槽31宽度小于下挡水筋21的开口宽度。所述下挡水筋21的开口侧高度稍低于下壳体2的开口侧高度。各下挡水筋21的开口侧均处于同一水平面中。从而，使得隔板3放置在各下挡水筋21的开口侧上方后，形成水平状态，避免造成平衡环整体不平衡。
实施例二
如图9所示，本实施例中，隔板3的内设有一周圆环状的凹槽31，以形成平衡液的流道。所述凹槽31的宽度不小于隔板宽度的二分之一；凹槽的深度不大于下腔室4深度的五分之一。所述的回流口32设于靠近平衡环中心一侧的凹槽31底部。本实施例中，所述的隔板3上设有多个回流口32，各回流口32的轴线均沿凹槽31的侧壁方向延伸设置；优选的，各回流口32相对平衡环中心对称分布。
如图8所示，本实施例中，凹槽31靠近平衡环中心一侧的侧壁与腔室4的内周侧壁接触连接，与凹槽31此侧侧壁相连接的凹槽31底部设有回流口32。所述回流口32的宽度不小于凹槽31底部宽度的三分之一，不大于二分之一。
实施例三
如图6所示，本实施例中，隔板3置于下壳体2中设置的下挡水筋21上部。
如图10所示，本实施例中，下壳体2中设有与隔板3形成销轴连接的安装柱22，所述的安装柱22由下壳体2底部向腔室4内竖直延伸的圆柱状凸起构成；优选的，所述安装柱22的截面半径由上至下逐渐变大。所述的隔板3上设有与安装柱22相配合的安装孔33，隔板3通过安装孔33套装在安装柱22上实现在挡水筋上部的水平方向的定位。
上述实施例中的实施方案仅仅是对本发明的优选实施例进行描述，并非对本发明的构思和范围进行限定，在不脱离本发明设计思想的前提下，本领域中专业技术人员对本发明的技术方案作出的各种变化和改进，均属于本发明的保护范围。
上述实施例中的实施方案仅仅是对本发明的优选实施例进行描述，并非对本发明的构思和范围进行限定，在不脱离本发明设计思想的前提下，本领域中专业技术人员对本发明的技术方案作出的各种变化和改进，均属于本发明的保护范围。

Claims (10)

  1. 一种复式平衡环，所述平衡环内部中空以构成腔室(4)；
    其特征在于：所述的腔室(4)内水平设有隔板(3)，将腔室(4)分为上腔室(41)和下腔室(42)；所述上腔室(41)与下腔室(42)经溢流结构和回流结构相连通；所述腔室(4)中注有液面接近隔板(3)的平衡液。
  2. 根据权利要求1所述的一种复式平衡环，其特征在于：溢流结构相对回流结构远离平衡环中心设置。
  3. 根据权利要求1或2所述的一种复式平衡环，其特征在于：溢流结构为隔板(3)外周与腔室(4)侧壁间形成的溢水间隙(43)，以供下腔室(42)中的平衡液溢流至上腔室(41)中。
  4. 根据权利要求1至3任一所述的一种复式平衡环，其特征在于：靠近隔板内周处设有构成回流结构的回流口(32)；优选的，所述的隔板(3)上设有环形凹槽(31)，环形凹槽(31)的底部设有回流口(32)，将溢流至上腔室(41)中的平衡液回流到下腔室(42)中。
  5. 根据权利要求4所述的一种复式平衡环，其特征在于：所述的回流口(32)设于靠近平衡环中心一侧的凹槽(31)底部。
  6. 根据权利要求1至5任一所述的一种复式平衡环，其特征在于：注入腔室(4)中的平衡液液面与隔板(3)相平齐。
  7. 根据权利要求6所述的一种复式平衡环，其特征在于：所述的下腔室(42)中设有多条相对平衡环中心对称设置的挡水筋；所述的隔板(3)置于挡水筋上部。
  8. 根据权利要求7所述的一种复式平衡环，其特征在于：隔板(3)与下腔室(42)间设有定位结构，以使隔板安装在挡水筋上部。
  9. 根据权利要求8所述的一种复式平衡环，其特征在于：所述的定位结构包括，设于下腔室(42)中的安装柱(22)和设于隔板(3)上的安装孔(33)，所述的安装柱(22)为由下腔室(42)底部竖直向上延伸的圆柱状凸起，隔板(3)通过安装孔(33)套装在安装柱(22)上实现在挡水筋上部的水平定位。
  10. 一种装有如权利要求1至9任一所述复式平衡环的洗衣机。
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