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WO2014205886A1 - 一种自清洁洗衣机 - Google Patents

一种自清洁洗衣机 Download PDF

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Publication number
WO2014205886A1
WO2014205886A1 PCT/CN2013/080414 CN2013080414W WO2014205886A1 WO 2014205886 A1 WO2014205886 A1 WO 2014205886A1 CN 2013080414 W CN2013080414 W CN 2013080414W WO 2014205886 A1 WO2014205886 A1 WO 2014205886A1
Authority
WO
WIPO (PCT)
Prior art keywords
outer barrel
washing machine
barrel
self
cleaning
Prior art date
Application number
PCT/CN2013/080414
Other languages
English (en)
French (fr)
Inventor
舒海
许升
李海涛
王玲臣
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.)
Filing date
Publication date
Priority claimed from CN201310268020.2A external-priority patent/CN104250903B/zh
Priority claimed from CN201310270202.3A external-priority patent/CN104250911B/zh
Priority claimed from CN201310269835.2A external-priority patent/CN104250912B/zh
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 JP2016522181A priority Critical patent/JP6210351B2/ja
Priority to US14/900,463 priority patent/US20160145792A1/en
Priority to KR1020167000493A priority patent/KR20160022861A/ko
Priority to DE112013007198.3T priority patent/DE112013007198B4/de
Publication of WO2014205886A1 publication Critical patent/WO2014205886A1/zh

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Classifications

    • 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
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • D06F35/008—Methods for washing, rinsing or spin-drying for disinfecting the tub or the drum
    • 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
    • D06F21/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement 
    • D06F21/06—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement  about a vertical axis
    • 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
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/12—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a vertical axis
    • D06F37/14—Ribs or rubbing means forming part of the receptacle

Definitions

  • the invention relates to the field of washing machines, in particular to a self-cleaning washing machine which is provided with cleaning particles between inner and outer barrels to automatically clean the wall between the inner and outer barrels as the water flows.
  • the existing pulsator washing machine is a closed environment between the inner and outer barrels. Only the water flow can pass. Due to the limitations of the above structure of the washing machine and the particularity of the use environment, after 3-5 months of use, the outer wall of the inner barrel and The inner wall of the outer tub will adhere to dirt, which will breed different degrees of bacteria, and most of the bacteria that breed are harmful to the human body. With the improvement of people's living standards and the improvement of quality of life requirements, the solution to the health problems of washing machines has become very urgent. The investigation of the internal environment of the washing machine by relevant scientific research institutions shows that the seriousness of the internal pollution of the washing machine has been increasingly valued by consumers. In order to fundamentally avoid the secondary dirt of the washing machine to the laundry and to better be responsible for the health of the user, the cleaning problem of the internal environment of the washing machine has become an urgent problem to be overcome.
  • Cigar Patent No. 200820183308 discloses a drum washing machine with barrel cleaning, which comprises an inner barrel, an outer barrel and a plurality of round silicone balls for cleaning the inner and outer barrel walls, and the rotation of the inner barrel is used to drive the flow of water during washing. Thereby, the silica gel ball between the inner barrel and the outer barrel of the washing machine is moved and continuously hits the two walls of the inner and outer barrels to achieve the purpose of cleaning the inner and outer barrel walls.
  • the applicant discloses in Chinese application 201010160548. 4 a washing machine and a method for cleaning the inner and outer barrels of a washing machine using flexible granules, wherein the washing machine adopts a law of placing flexible granules between the inner and outer barrels of the washing machine, and the water in the washing process.
  • the sexual flow drives the flexible particles to impact and rub the inner and outer barrel walls of the washing machine to clean the inner and outer barrels of the washing machine.
  • the above-mentioned washing machine structure has the following drawbacks: If the flexible particles are always placed between the inner and outer barrels, the collision with the inner and outer barrel walls during the dehydration of the washing machine generates a large noise, which also damages the particles and reduces the effect of the particles on the cleaning effect; The cleaning particles are discharged, the above structure is difficult to completely discharge, and there are still residual particles during dehydration; in addition, since the gap between the bottom of the inner tub and the bottom of the outer tub is small, the water flow is difficult to wash between the inner and outer tub bottoms for a long time. The dirt accumulation is large and it is not easy to handle, and the cleaning particles of the above structure cannot achieve self-cleaning of the inner bottom region.
  • the present invention has been made in view of the above. SUMMARY OF THE INVENTION
  • the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and to provide a self-cleaning washing machine that improves the drainage flow rate to discharge cleaning particles to the bottom of the tub.
  • a self-cleaning washing machine comprising an inner tub and an outer tub, wherein a chamber between the inner tub and the outer tub is provided to rotate with water to clean the inner wall of the outer tub and the outer wall of the inner tub
  • the cleaning particles are provided on the inner surface of the outer tub bottom with one or two or three modified structures as follows: First improvement: an inclined region provided on the inner surface of the outer tub bottom, the region is arranged in the circumferential direction, close to The height of the center of the bottom of the outer tub is higher than the height of the side wall of the outer tub, and the bottom drain of the outer tub is set at the lowest point of the bottom of the outer tub; the second improvement: the inner surface of the bottom of the outer tub, the side wall of the adjacent outer tub The annular water channel is recessed in the circumferential direction, and the bottom bottom drain port communicates with the annular water channel; the third improvement: a water retaining rib is provided on a side of the bottom
  • the height of the inner surface of the bottom of the outer tub is gradually lowered from the center toward the side wall of the tub in the radial direction, and the bottom of the outer tub has a conical structure with a high center and a low circumference. Further, the height of the inner surface of the bottom of the outer tub is gradually lower in the circumferential direction clockwise or counterclockwise, and the direction of the lowering is related to the direction of rotation when the inner tub of the washing machine is dehydrated.
  • the height of the inner surface of the outer tub bottom is inclined to the horizontal plane by an angle ⁇ 0 ⁇ ⁇ 30° in the radial direction. Further, the inner surface height of the outer tub bottom is inclined at an angle to the horizontal plane in the radial direction. ⁇ 0 ⁇ ⁇ ⁇ 3 °
  • the difference between the highest and lowest heights is 5_30mm when it is gradually decreasing in the circumferential direction, or 1/10-1/3 of the minimum distance between the inner and outer barrel bottoms.
  • the depth of the annular channel It is gradually clockwise or counterclockwise in the circumferential direction, and the downward direction is related to the direction of rotation when the inner tub of the washing machine is dehydrated.
  • the drain port is located at the lowest point of the annular water channel, and one side is adjacent to the shallowest portion of the annular water channel.
  • the width of the annular water channel is gradually widened clockwise or counterclockwise in the circumferential direction, and the direction of change is related to the direction of rotation when the inner tub of the washing machine is dehydrated.
  • the drain opening is located at the widest point of the annular water channel, and the side is narrowest at the narrowest point of the annular water channel. Adjacent.
  • the annular water channel is formed by being gradually inclined from the center of the outer tub bottom toward the outer side wall of the tub and engaging with the outer side wall of the outer tub.
  • the annular waterway has a width of 10 - 60 and a depth of 3 - 15
  • the water retaining rib is formed by a radial rib from a center of the outer tub bottom to the side of the drain port, and the radial rib is tangent to the side of the drain port.
  • the water retaining rib is formed by an arcuate rib on the side of the bottom of the outer tub to the side of the drain, and the contour of the curved rib and the side of the drain is smoothly transitioned.
  • the water retaining rib has a height of 5-20 mm.
  • the water retaining rib is formed by a height difference section between the highest and lowest joints when the bottom surface of the outer tub is gradually changed clockwise or counterclockwise in the circumferential direction.
  • the cleaning granules are arranged between the inner and outer barrels to clean the inner and outer barrel walls, and the principle that the washings in the inner tub rub the inner barrel to prevent the dirt from breeding bacteria;
  • the cleaning particles may be sponge materials or rubber or Plastic foams, such as foamed rubber, foamed plastics, foamed composite polyurethanes, preferably with adsorbent materials, make it better to clean the barrel wall, the cleaning particles must have a certain elasticity, and the density in the dry state It is smaller than water, has the property of being saturated with water in water, and is inexpensive.
  • the cleaning particles used are spherical, square, elliptical, cylindrical, tetrahedral or other irregular agglomerated particulate matter, the number of which is 10-50, and the density of these particles is smaller than water, which has a certain Elasticity and wear resistance.
  • the washing machine of the present invention preferably reuses the cleaning particles, and a drainage device is arranged under the outer tub of the washing machine to communicate with the drain port, and the device collects the cleaning particles by draining dehydration during drainage and dehydration, and blocks the cleaning.
  • the granules can smoothly discharge the swarf, the sheet material such as coins, buttons and the like and other small things smaller than the cleaning particles to avoid clogging; when the water enters again, the cleaning granules float upward with the rise of the water level, and are separated from the drainage.
  • the device enters the chamber between the inner and outer barrels by the drain port, and continues to clean the wall between the inner and outer barrels as the water flows.
  • the self-cleaning washing machine of the present invention controls different movements of the inner tub during the draining process and/or the dehydrating process, so that the washing particles flow into the drain port together with the washing water, are collected by the drain device or directly discharged, and the inner tub is controlled during the draining process.
  • -50 rpm / low rotation so that the cleaning particles between the inner and outer barrel walls fall between the inner and outer barrels, and flow into the drainage port along with the water in the outer barrel; during the dehydration stage, the inner barrel is controlled to perform at least one braking action.
  • the cleaning particles between the inner and outer barrel walls fall between the inner and outer barrels and flow into the drainage port along with the water poured out from the clothes.
  • the washing machine of the present invention rotates in the inner and outer barrels due to the non-stop rotation of the pulsator or the inner barrel during the washing process.
  • the water in the inner tank exchanges with the water in the inner tub to form a water flow, which drives the cleaning particles placed in the chamber between the inner and outer barrels to swim in the water, collides and rubs against the barrel wall between the inner and outer barrels, and simultaneously assists in water soaking.
  • the cleaning of the inner and outer barrel walls and the bottom of the inner barrel bottom prevents the generation of dirt and eliminates the growth of bacteria.
  • the improved structure of the outer tub bottom is a structure in which the bottom surface of the outer tub is inclined downward from the center of the outer tub bottom to the circumferential direction, a tilting and descending structure which is consistent with the dehydration rotation direction in the circumferential direction, and a circumferential annular water passage structure. And the water retaining rib structure on one side of the drain port, the above structure enables the cleaning particles on the bottom surface of the outer tub to completely flow into the drain port with the water flow when draining, and avoids the cleaning particles when the partial cleaning particles are dehydrated due to the stranding in the outer tub. Noise is generated by hitting the barrel wall.
  • FIG. 1 is a schematic structural view of an inner and outer barrel of a washing machine according to the present invention
  • Figure 2 is a schematic view of the outer tub bottom of the washing machine of the present invention.
  • FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
  • FIG. 4 is a cross-sectional view taken along the line B-B of FIG. 2;
  • FIG. 5 is a schematic view showing the structure of the outer tub according to the present invention. detailed description
  • the washing machine of the present invention comprises an outer tub 1 and an inner tub 2, and a cleaning granule 4 of a cleaning bucket wall is arranged in a chamber 3 between the outer tub 1 and the inner tub 2, during the washing/rinsing process,
  • the water flow drives the cleaning particles placed between the inner and outer barrels to swim, colliding and rubbing the inner and outer barrel walls, and at the same time cleaning the inner and outer barrel walls and the bottom barrel bottom under the aid of water immersion; in order to avoid the high-speed dehydration stage of the clothes, Cleaning the pellets between the inner and outer barrels causes noise pollution, so the cleaning particles need to be discharged or collected for reuse.
  • the washing machine of the invention adopts recycling and reuse of the cleaning particles, and a particle recovery device is installed under the water outlet of the washing machine, and the cleaning particles are blocked and recovered in the lower part of the drainage port every time the drainage is performed, and the drainage includes drainage when dehydrating;
  • the buoyancy of the water is used to float the cleaning particles from the drain to the chamber between the inner and outer barrels.
  • the inner tub is controlled to rotate at a low rotation speed, so that the cleaning particles between the inner and outer barrel walls fall between the inner and outer barrels, and flow into the drainage port along with the water in the outer barrel; in the dehydration stage, the inner barrel is controlled to perform at least one braking action.
  • the inner bucket rotates in the same direction at a low speed to drive the water flow to rotate.
  • the centrifugal force of the water flow acts on the inner wall of the outer tub.
  • the water flow first flows into the bottom drain port under the action of centrifugal force.
  • the inner tub rotates in the same direction as the draining phase during dehydration.
  • the present invention improves the inner surface of the outer tub bottom 5 so that the washing particles are easily flowed into the drain port 6 with the water flow during the draining process, and the inner tub rotates during the draining process.
  • the improvement of the outer tub bottom 5 includes one or two or three combinations of the following four structures: the bottom surface of the outer tub is inclined downwardly, the structure 10, 11, the outer bottom annular water channel 12 structure, and the drain port 6 - side
  • the structure of the water retaining rib 13 is. Specifically: Embodiment 1
  • the improvement of the outer tub bottom is specifically: the structure 10 of the bottom surface of the outer tub is inclined downwardly from the center 8 of the outer tub bottom toward the outer side wall 9 of the outer tub, and the outer tub
  • the inner surface of the bottom 5 is provided with a surface inclined area 7, which is arranged in the circumferential direction, the height of the position near the center 8 of the outer tub bottom is higher than the height of the position near the side wall 9 of the outer tub, and the washing machine drain 6 is provided at the bottom of the outer tub.
  • the structure is favorable for drainage, especially when the amount of water in the late stage of drainage is small, the drainage water flows the cleaning particles into the drainage port.
  • the surface inclined area 7 is a structure which is gradually lowered from the center 8 of the outer tub bottom toward the edge. Specifically, the inner surface height of the outer tub bottom 5 is gradually lowered from the center 8 toward the outer side wall 9 of the tub body in the radial direction, and the outer tub bottom 5 is a cone-shaped structure with a high center and a low circumference.
  • the angle ⁇ between the inner surface of the outer tub bottom 5 and the horizontal plane in the radial direction is 0 ⁇ ⁇ 30° (see Fig. 3).
  • the surface inclined area is an annular area, and the radial width L, that is, the difference between the outer radius and the inner radius of the annular area and the outer barrel bottom radius R satisfy: R/5 ⁇ L ⁇ R.
  • Embodiment 2 As shown in FIG.
  • the improvement of the outer tub bottom is specifically: the inclined gradually lowering structure 11 which is consistent with the dehydration rotation direction of the inner tub in the circumferential direction, and the inner surface height of the outer tub bottom 5 along the circumference
  • the direction is gradually clockwise or counterclockwise, and the direction of the downward direction is the same as the direction of rotation when the inner tub of the washing machine is dehydrated.
  • the dehydration direction of the inner drum of the existing washing machine is clockwise, so the inner surface height of the outer tub bottom 5 is gradually lower clockwise (refer to FIG. 2), and the drain port 6 is disposed at the lowest point of the outer bottom of the tub, 14 and the highest side. At 15 adjacent.
  • the structure not only facilitates the discharge of the cleaning particles when draining, but also facilitates the cleaning of the particles which may remain in the outer tub when the water is removed from the clothes before the high-speed dewatering.
  • the cleaning particles generally become low in the inner and outer barrels after draining.
  • the inner tub rotates to fall off the bottom of the tub.
  • the height difference H between the highest point 15 and the lowest point 14 is 5-30 mm, or 1/10_1/3 of the minimum distance between the inner and outer barrel bottoms.
  • Embodiment 3 This embodiment is a combination of Embodiment 1 and Embodiment 2.
  • the change in the height of the inner surface of the outer tub bottom is: while gradually decreasing from the center toward the outside in the radial direction, the circumferential direction is also gradually lower, and the structure is further When it is drained, the cleaning particles are discharged into the drain port with the water flow.
  • Each of the above embodiments has an inner surface of the outer tub bottom of the inclined structure, and the potential energy caused by the difference in the tilt height is converted into water flow energy to increase the impact force of the water flow, and the cleaning particles are prevented from remaining on the inner surface of the outer tub bottom.
  • the improvement of the outer tub bottom is specifically as follows: the outer tub bottom 5 is adjacent to the outer tub side wall 9 and is provided with a concave annular water channel 12 in the circumferential direction, the drain port 6 and The annular water channels 12 are in communication.
  • the drain port 6 is disposed in the annular water channel 12, or the annular water channel 12 passes through the drain port 6 (refer to FIG. 5). Further, the depth of the annular water channel 12 is gradually decreased clockwise or counterclockwise in the circumferential direction, and gradually decreases.
  • the drain port 6 is disposed at the lowest point of the annular water channel 12, one side is adjacent to the shallowest portion of the annular water channel; and/or the width of the annular water channel 12 is clockwise or counterclockwise in the circumferential direction. The width is changed, and the direction of change is the same as the direction of rotation when the inner tub of the washing machine is dehydrated.
  • the drain port 6 is disposed at the widest point of the annular water channel, and one side is adjacent to the narrowest portion of the annular water channel.
  • the annular water channel 12 has a width of 10 - 60 and a depth of 3 - 15 or the annular water channel 12 has a width of 1 / 30 to 1 / 5 of the radius of the bottom of the barrel.
  • the annular water channel 12 described in this embodiment is
  • the outer bottom center direction 8 is formed by the downward direction of the outer side wall 9 of the outer tub and the outer side wall 9 of the outer tub.
  • the drain port 6 since the drain port 6 has two sides 61 62 in the circumferential direction of the outer tub bottom 3, according to the direction in which the inner tub is dehydrated and rotated, it is generally rotated clockwise, and one side 61 is rotated against the inner tub when dehydrating.
  • the direction that is, the side that first passes through the drain when rotating; the other side 62 is the direction of rotation when the inner tub is dehydrated, that is, the side that passes through the drain after the rotation.
  • the surface of the outer tub bottom 3 corresponding to the embodiment of the present embodiment is provided with a water retaining rib 13 (see FIG. 2) corresponding to the rotation direction of the drain port 6 along the rotation direction of the inner tub.
  • the inner tub rotates during dehydration and drainage, and the water flow is driven in one direction.
  • Rotating, the water retaining rib 13 blocks the flow of water to form an enlarged drainage vortex at the drain port 6, increasing the flow rate, facilitating cleaning particles to enter the drain port 6, wherein the water retaining rib 13 is from the bottom of the tub
  • the center 8 is formed by a radial rib on the side of the drain port 62, and the radial rib is tangential to the side 62 of the drain.
  • the water retaining rib 13 is formed by an arcuate rib of the outer bottom center 8 to the drain side 62, and the arcuate rib and the drain side 62 have a smooth transition.
  • the height of the water retaining rib 13 in this embodiment is 5-20 mm, or 1/10_1/2 of the distance between the inner and outer barrel bottoms.
  • Embodiment 6 This embodiment is a combination of Embodiment 2 and Embodiment 5.
  • the water retaining rib 13 of the present embodiment has the highest and lowest joints when the bottom surface of the outer tub is gradually changed clockwise or counterclockwise in the circumferential direction.
  • the height difference section is formed (see Fig.
  • Embodiment 7 This embodiment is a combination of Embodiments 1, 2, 4 and Embodiment 5.
  • the structural improvement of the outer tub bottom described in this embodiment includes: The bottom surface of the outer tub is radially oriented from the center 8 of the outer tub bottom.
  • the structure 10 of the outer side wall 9 of the outer side of the outer tub is inclined downwardly, the inclined downward structure 11 which is consistent with the direction of dewatering rotation of the inner tub in the circumferential direction, the annular water channel 12 structure of the outer bottom of the outer tub, and the structure of the water retaining rib 13 of the side of the drain 6 (See Figure 2).
  • the improved structure of the outer bottom of the barrel of the invention facilitates the discharge of the cleaning particles, especially when the drainage is finished and dewatered. Due to the flat structure of the existing outer bottom of the barrel, the cleaning particles are easily stranded on the bottom of the outer barrel when the water is small, and the structure of the present invention is used to increase The flow rate and the flushing force of the water flow can completely discharge the cleaning particles.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)

Abstract

一种自清洁洗衣机，包括内桶（2）和外桶（1），内桶（2）和外桶（1）之间的腔室（3）内设有清洁外桶（1）内壁和内桶（2）外壁的清洗颗粒（4），于外桶底（5）的内表面设有下述一种或两种或三种改进结构：设于外桶底（5）内表面的倾斜区域（7），该区域沿圆周方向设置，靠近外桶底中心（8）位置的高度高于靠近外桶侧壁（9）位置的高度，外桶底（5）排水口（6）设于外桶底（5）最低处；设于外桶底（5）内表面、相邻外桶侧壁（9）处沿圆周方向下凹的环形水道（12），外桶底（5）排水口（6）与环形水道（12）相通；设于外桶底（5）表面对应排水口（6）的一侧设有挡水凸肋（13），顺着内桶（2）脱水时转动方向的外桶底（5）排水口（6）一侧设置。洗衣机外桶底（5）的改进结构，增大水流的流速和冲刷力度，能够将清洗颗粒（4）完全排出。

Description

一种自清洁洗衣机 技术领域
本发明涉及洗衣机领域， 尤其是一种在内外桶之间设有清洗颗粒以随水流转动自动清洗 内外桶之间桶壁的自清洁洗衣机。
背景技术
现有的波轮洗衣机内、 外桶之间是一个封闭的环境， 只有水流可以通过， 由于洗衣机上 述结构的局限性和使用环境的特殊性， 因此在使用 3-5个月之后， 内桶外壁和外桶内壁上会 粘附污垢， 从而滋生不同程度的细菌， 而滋生的细菌绝大部分是对人体有害的。 随着人们生活水平的提高和对生活质量要求的提高， 洗衣机的卫生问题的解决已经显的 很迫切。 相关科研机构对洗衣机内部环境的调查情况显示， 洗衣机内部污染的严重性已经越 来越受到消费者的重视。 为了从根本上避免洗衣机对洗涤物的二次污垢， 并且更好地对用户 的健康负责， 洗衣机内部环境的清洁难题已经是一个迫切需要攻克的问题。
中国专利 200820183308. 4公开了一种带有桶间清洁的套桶洗衣机， 它包括内桶、外桶和 用于清洁内外桶壁的多个圆形硅胶球， 利用洗衣时内桶旋转带动水的流动， 从而带动洗衣机 内桶、 外桶之间的硅胶球运动并不断碰撞内外桶的两壁以达到清洁内外桶壁的目的。
但上述洗衣机结构， 在排水后， 由于橡胶球或柔性颗粒在桶内处于自由散落状态， 高速 脱水过程中会产生很大的噪音， 同时增加洗衣机的能耗， 影响洗衣机的寿命。
此外，申请人在中国申请 201010160548. 4中公开了一种使用柔性颗粒清洗洗衣机内外桶 之间的洗衣机及方法，该洗衣机采用在洗衣机内外桶之间放置柔性颗粒，通过衣物洗涤过程中 水的规律性流动带动柔性颗粒撞击和摩擦洗衣机内外桶壁，实现洗衣机内外桶之间的清洁。
但上述洗衣机结构， 存在如下缺陷： 若柔性颗粒始终置于内外桶之间， 则在洗衣机脱水 时与内外桶壁碰撞产生较大噪音， 也会损坏颗粒进而减少颗粒影响清洗效果； 若排水时将清 洗颗粒排出， 上述结构很难完全排出， 脱水时仍有残留的颗粒； 另外， 由于内桶底与外桶底 之间的间隙较小， 长时间使用， 水流很难在内外桶底之间冲刷， 污物积攒较多且不容易处理， 上述结构的清洗颗粒无法实现内桶底区域的自清洗。
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， 提供一种对外桶底改进增加排水流 速以排出清洗颗粒的自清洁洗衣机。 为解决上述技术问题， 本发明采用技术方案的基本构思是： 一种自清洁洗衣机， 包括内 桶和外桶，内桶和外桶之间的腔室内设有随水流转动以清洁外桶内壁和内桶外壁的清洗颗粒， 于外桶底的内表面设有下述一种或两种或三种改进结构： 第一种改进： 设于外桶底内表面的倾斜区域， 该区域沿圆周方向设置， 靠近外桶底中心 位置的高度高于靠近外桶侧壁位置的高度， 外桶底排水口设于外桶底最低处； 第二种改进： 设于外桶底内表面、 相邻外桶侧壁处沿圆周方向下凹的环形水道， 外桶底 排水口与环形水道相通； 第三种改进： 设于外桶底表面对应排水口的一侧设有挡水凸肋， 顺着内桶脱水时转动方 向的外桶底排水口一侧设置。 进一步的， 所述外桶底的内表面高度沿径向方向由中心向外桶侧壁方向渐低， 外桶底呈 中心高、 周围低的锥形结构。 进一步的， 所述外桶底的内表面高度沿圆周方向顺时针或逆时针渐低， 渐低方向与洗衣 机内桶脱水时的转动方向有关。
进一步的， 所述外桶底的内表面高度沿径向方向与水平面的倾斜夹角 α 0< α 30° 进一步的， 所述外桶底的内表面高度沿径向方向与水平面的倾斜夹角 α 0< α ^ 3 ° 沿圆周方向渐低变化时最高与最低的高度差为 5_30mm， 或者为内外桶底之间最小间距的 1/10-1/3 进一步的， 所述的环形水道的深度沿圆周方向顺时针或逆时针渐低， 渐低方向与洗衣机 内桶脱水时的转动方向有关， 排水口设于环形水道最低处， 一侧与环形水道最浅处相邻。 或者， 所述的环形水道的宽度沿圆周方向顺时针或逆时针渐宽， 变化方向与洗衣机内桶 脱水时的转动方向有关， 排水口设于环形水道最宽处， 一侧与环形水道最窄处相邻。 进一步的， 所述的环形水道由外桶底中心方向向外桶侧壁方向渐低倾斜与外桶侧壁配合 形成。 进一步的， 所述的环形水道宽度为 10- 60 深度为 3- 15 进一步的， 所述的挡水凸肋为由外桶底中心至所述排水口一侧径向凸肋构成， 径向凸肋 与所述排水口一侧相切。 或者， 所述的挡水凸肋为外桶底中心至所述排水口一侧的弧形凸肋构成， 弧形凸肋与所 述排水口一侧的轮廓平滑过渡。 进一步的， 所述的挡水凸肋高度为 5- 20mm。 进一步的， 所述的挡水凸肋由外桶底表面沿圆周方向顺时针或逆时针渐低变化时最高和 最低连接处的高度差断面形成。 本发明在内外桶之间放置清洗颗粒以清洁内外桶壁是借鉴了内桶中洗涤物摩擦内桶使其 不会粘附污垢滋生细菌的原理； 清洗颗粒可以是海绵类的物质， 也可以是橡胶或者塑料发泡 物， 如发泡橡胶， 发泡塑料、 发泡复合聚氨酯， 优选的采用有吸附性的材料， 使得其清洗桶 壁效果更好， 清洗颗粒要有一定的弹性， 干燥状态下其密度比水小， 在水中具有浸透水的性 质， 价格便宜， 即使不重复利用每次排出成本也不高。 采用的清洗颗粒为球状、 方块状、 椭圆球状、 圆柱体状、 正四面体或其他不规则的团状 颗粒物质， 其个数为 10-50个， 这些颗粒密度比水小， 其具有一定的弹性和耐磨性。 本发明所述的洗衣机洗涤完成后， 为避免高速脱水时清洗颗粒在内外桶之间撞击桶壁产 生噪音， 并减少内外桶使用寿命， 在排水时和高速脱水前， 通过清洗颗粒随水流经排水口排 出或者被收集再利用。 为了节约资源， 减少使用成本， 本发明洗衣机优选清洗颗粒重复利用， 在洗衣机外桶下方设有一排水装置， 与排水口相通， 该装置在排水和脱水时利用排脱水收集 清洗颗粒， 且在阻挡清洗颗粒的同时能顺利地将线屑、 片状物如硬币、 纽扣等及其它尺寸比 清洗颗粒小的杂物排出， 避免堵塞； 再进水时， 清洗颗粒随着水位的上升向上浮动， 脱离排 水装置由排水口进入内外桶之间的腔室内， 继续随水流转动清洗内外桶之间的桶壁。 本发明自清洁洗衣机在排水过程和 /或脱水过程中， 控制内桶运行不同的动作， 使清洗颗 粒与洗涤水一起流入排水口， 被排水装置收集或直接排出， 在排水过程中， 控制内桶以 5-50 转 /分钟的低转速旋转， 使卡在内外桶壁间的清洗颗粒落入内外桶之间， 随外桶中的水一起流 入排水口； 脱水阶段， 控制内桶执行至少一次刹车动作， 使卡在内外桶壁间的清洗颗粒落入 内外桶之间， 随衣物中甩出的水一起流入排水口。 采用上述技术方案后， 本发明与现有技术相比具有以下有益效果。 本发明所述的洗衣机在洗涤过程中， 由于波轮或者內桶不停的正反向转动， 在内外桶之 间的水跟内桶中的水进行交换， 形成水流， 带动放置在内外桶之间腔室内的清洗颗粒在水中 游动， 对内外桶之间的桶壁进行碰撞摩擦， 同时在水的浸泡辅助作用下对内外桶壁和内桶底 部附着物进行清理， 根本上阻止了污垢的产生， 杜绝了细菌的滋生。 用户洗衣服的同时也在 进行内外桶的清洁， 随时洗涤， 随时清洗， 不留污垢， 干净放心。 本发明所述的外桶底改进结构， 分别为外桶底表面由外桶底中心至圆周方向倾斜渐低的 结构、 沿圆周方向与脱水转动方向一致的倾斜渐低结构， 圆周环形水道结构， 及排水口一侧 的挡水凸肋结构， 上述结构使得排水时能够让在外桶底表面的清洗颗粒随水流完全流入到排 水口， 避免了部分清洗颗粒由于搁浅在外桶内导致脱水时该清洗颗粒撞击桶壁产生噪音。 附图说明
图 1是本发明所述的洗衣机内外桶结构示意图；
图 2是本发明所述的洗衣机外桶底示意图；
图 3是图 2中的 A-A向剖视图； 图 4是图 2中的 B-B向断面视图； 图 5是本发明所述的外桶结构示意图； 图 6是本发明所述的外桶底结构示意图。 具体实施方式
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。
如图 1所示， 本发明所述的洗衣机包括外桶 1和内桶 2, 外桶 1与内桶 2之间的腔室 3 内设有清洁桶壁的清洗颗粒 4， 在洗涤 /漂洗过程中， 水流带动放置在内外桶之间的清洗颗粒 游动， 对内外桶壁进行碰撞摩擦， 同时在水的浸泡辅助作用下对内外桶壁和内桶底部附着物 进行清理； 为了避免在衣物高速脱水阶段， 清洗颗粒在内外桶之间打桶造成噪音污染， 因此 需要将清洗颗粒排出或收集再利用。
本发明洗衣机对于清洗颗粒采用回收再利用， 在洗衣机的排水口下方安装有颗粒回收装 置， 每次排水时将清洗颗粒阻拦回收在排水口下部， 该排水包括脱水时的排水； 再进水时， 利用水的浮力将清洗颗粒浮起从排水口再投放到内外桶之间的腔室内。 在排水过程中， 控制 内桶以低转速旋转， 使卡在内外桶壁间的清洗颗粒落入内外桶之间， 随外桶中的水一起流入 排水口； 脱水阶段， 控制内桶执行至少一次刹车动作， 使卡在内外桶壁间的清洗颗粒落入内 外桶之间， 随衣物中甩出的水一起排入排水口。 排水时， 内桶沿同一方向低速旋转带动水流 转动， 水流的离心力作用在外桶内壁上， 当水位降低到底部排水口位置时， 水流在离心力的 作用下首先流入底部排水口内。 内桶在脱水时和排水阶段的转动方向相同。 如图 2所示， 本发明通过对外桶底 5内表面的改进， 使得排水时清洗颗粒容易随水流流 入排水口 6内， 该排水过程， 内桶转动。 外桶底 5的改进包括下述四种结构的一种或两种或 三种组合： 外桶底表面倾斜渐低结构 10、 11、 外桶底圆周环形水道 12结构， 及排水口 6— 侧的挡水凸肋 13结构。 具体为： 实施例一
如图 2和图 3所示， 本实施例中， 外桶底的改进具体为： 外桶底表面由外桶底中心 8沿 径向向外桶侧壁 9倾斜渐低的结构 10， 外桶底 5的内表面设有表面倾斜区域 7， 该区域沿圆 周方向设置， 靠近外桶底中心 8位置的高度高于靠近外桶侧壁 9位置的高度， 洗衣机排水口 6 设于外桶底最低处。 该结构利于排水时， 尤其是排水后期水量较小时， 排水水流将清洗颗 粒冲到排水口内。 该表面倾斜区域 7为由外桶底中心 8开始向边缘渐低的结构， 具体为， 外桶底 5内表面 高度沿径向方向由中心 8向外桶侧壁 9方向渐低， 外桶底 5呈中心高、 周围低的锥形结构。 外桶底 5内表面沿径向方向与水平面的倾斜夹角 α为， 0< α 30° (参阅图 3 ) 。 该表面倾斜区域为一环形区域， 其径向宽度 L即环形区域的外半径与内半径的差值与外 桶底半径 R关系满足： R/5<L<R。 实施例二 如图 2和图 4所示， 本实施例中， 外桶底的改进具体为： 沿圆周方向与内桶脱水转动方 向一致的倾斜渐低结构 11、 外桶底 5内表面高度沿圆周方向顺时针或逆时针渐低， 渐低方向 与洗衣机内桶脱水时的转动方向一致。一般的， 现有洗衣机内桶脱水转动方向为顺时针方向， 因此外桶底 5内表面高度沿顺时针渐低 （参阅图 2 ) ， 排水口 6设于外桶底最低处 14， 一侧 与最高处 15相邻。 该结构不仅利于排水时， 清洗颗粒的排出， 还利于高速脱水前， 衣物内脱 出的水排水时冲刷可能残留在外桶内的清洗颗粒， 该清洗颗粒一般为排水后水位变低卡在内 外桶之间缝隙处， 由于内桶转动使其脱落在外桶底。 具体的， 所述外桶底 5内表面高度沿圆周方向渐低变化时最高处 15与最低处 14的高度 差 H为 5_30mm， 或者为内外桶底之间最小间距的 1/10_1/3。 实施例三 本实施例为实施例一与实施例二的结合， 外桶底内表面高度的变化为： 在由中心沿径向 向外渐低的同时， 沿圆周方向也渐低， 该结构更利于排水时清洗颗粒随水流排出到排水口内。 上述各实施例具有倾斜结构的外桶底内表面，由倾斜高度差带来的势能转换为水流动能， 以增大水流的冲击力度， 防止清洗颗粒残留在外桶底内表面上。 实施例四
如图 2和图 5所示， 本实施例中， 外桶底的改进具体为： 外桶底 5相邻外桶侧壁 9处沿 圆周方向设有下凹的环形水道 12， 排水口 6与环形水道 12相通。 优选的， 排水口 6设于环 形水道 12内， 或者环形水道 12通过排水口 6 (参阅图 5 ) 进一步的， 所述环形水道 12的深度沿圆周方向顺时针或逆时针渐低， 渐低方向与洗衣机 内桶脱水时的转动方向一致，排水口 6设于环形水道 12最低处，一侧与环形水道最浅处相邻； 和 /或所述环形水道 12的宽度沿圆周方向顺时针或逆时针渐宽， 变化方向与洗衣机内桶脱水 时的转动方向一致， 排水口 6设于环形水道最宽处， 一侧与环形水道最窄处相邻。 所述的环形水道 12宽度为 10- 60 深度为 3- 15 或者环形水道 12宽度为外桶底半 径的 1/30至 1/5 结合实施例一，本实施例所述的环形水道 12为由外桶底中心方向 8向外桶侧壁 9方向渐 低倾斜与外桶侧壁 9配合形成。 实施例五
如图 2和图 6所示， 由于排水口 6在外桶底 3沿圆周方向具有两侧 61 62， 根据内桶脱 水转动的方向， 一般为顺时针转动， 一侧 61为逆着内桶脱水时转动的方向， 即转动时先经过 排水口的一侧； 另一侧 62为顺着内桶脱水时转动的方向， 即转动时后经过排水口的一侧。本 实施例所述的外桶底 3表面对应排水口 6顺着内桶脱水时转动方向的一侧 62设有挡水凸肋 13 (参阅图 2 ) ， 脱水排水时内桶转动， 带动水流沿一个方向转动， 该挡水凸肋 13阻挡水流 使其在排水口 6处形成加大的排水漩涡， 增大流速， 利于清洗颗粒进入排水口 6 其中， 所述的挡水凸肋 13为由外桶底中心 8至所述排水口一侧 62径向凸肋构成， 径向 凸肋与所述排水口一侧 62相切。
或者， 所述的挡水凸肋 13为外桶底中心 8至所述排水口一侧 62的弧形凸肋构成， 弧形 凸肋与所述排水口一侧 62的轮廓平滑过渡。 本实施例所述的挡水凸肋 13高度为 5_20mm， 或者为内外桶底之间间距的 1/10_1/2。 实施例六 本实施例为实施例二与实施例五的结合，本实施例所述的挡水凸肋 13由外桶底表面沿圆 周方向顺时针或逆时针渐低变化时最高和最低连接处的高度差断面形成 （参阅图 6 ) ， 排水 口 6设于外桶底最低处 14， 其顺着内桶脱水时转动方向的一侧 62与最高处 15相邻。 实施例七 本实施例为实施例一、 二、 四与实施例五的结合， 本实施例所述的外桶底的结构改进同 时包括： 外桶底表面由外桶底中心 8沿径向向外桶侧壁 9倾斜渐低的结构 10、 沿圆周方向与 内桶脱水转动方向一致的倾斜渐低结构 11、 外桶底圆周环形水道 12结构， 及排水口 6—侧 的挡水凸肋 13结构 （参阅图 2 ) 。 本发明外桶底改进结构利于清洗颗粒的排出， 尤其是排水快结束和脱水时， 由于现有外 桶底平整结构， 水少时清洗颗粒容易搁浅在外桶底， 而采用本发明的结构， 增大水流的流速 和冲刷力度， 能够将清洗颗粒完全排出。 上述实施例中的实施方案可以进一步组合或者替换， 且实施例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

权 利 要 求 书
1、 一种自清洁洗衣机， 包括内桶和外桶， 内桶和外桶之间的腔室内设有随水流转动以 清洁外桶内壁和内桶外壁的清洗颗粒， 其特征在于： 于外桶底的内表面设有下述一种或两 种或三种改进结构：
第一种改进： 设于外桶底内表面的倾斜区域， 该区域沿圆周方向设置， 靠近外桶底中 心位置的高度高于靠近外桶侧壁位置的高度， 外桶底排水口设于外桶底最低处；
第二种改进： 设于外桶底内表面、 相邻外桶侧壁处沿圆周方向下凹的环形水道， 外桶 底排水口与环形水道相通；
第三种改进： 设于外桶底表面对应排水口的一侧设有挡水凸肋， 顺着内桶脱水时转动 方向的外桶底排水口一侧设置。
2、 根据权利要求 1所述的自清洁洗衣机， 其特征在于： 所述外桶底的内表面高度沿径 向方向由中心向外桶侧壁方向渐低， 外桶底呈中心高、 周围低的锥形结构。
3、 根据权利要求 1或 2所述的自清洁洗衣机， 其特征在于： 所述外桶底的内表面高度 沿圆周方向顺时针或逆时针渐低， 渐低方向与洗衣机内桶脱水时的转动方向有关。
4、 根据权利要求 1或 2所述的自清洁洗衣机， 其特征在于： 所述外桶底的内表面高度 沿径向方向与水平面的倾斜夹角 α 0< α 30°
5、 根据权利要求 3所述的自清洁洗衣机， 其特征在于： 所述外桶底的内表面高度沿径 向方向与水平面的倾斜夹角 α 0 < α sC3 ° ， 沿圆周方向渐低变化时最高与最低的高度差 为 5-30 或者为内外桶底之间最小间距的 1/10-1/3
6、 根据权利要求 1所述的自清洁洗衣机， 其特征在于： 所述的环形水道的深度沿圆周 方向顺时针或逆时针渐低， 渐低方向与洗衣机内桶脱水时的转动方向有关， 排水口设于环 形水道最低处， 一侧与环形水道最浅处相邻。
7、 根据权利要求 1或 6所述的自清洁洗衣机， 其特征在于： 所述的环形水道的宽度沿 圆周方向顺时针或逆时针渐宽， 变化方向与洗衣机内桶脱水时的转动方向有关， 排水口设 于环形水道最宽处， 一侧与环形水道最窄处相邻。
8、 根据权利要求 1或 6所述的自清洁洗衣机， 其特征在于： 所述的环形水道由外桶底 中心方向向外桶侧壁方向渐低倾斜与外桶侧壁配合形成。
9、根据权利要求 1所述的自清洁洗衣机，其特征在于：所述的环形水道宽度为 10-60mm 深度为 3 - 15
10、 根据权利要求 1 所述的自清洁洗衣机， 其特征在于： 所述的挡水凸肋为由外桶底 中心至所述排水口一侧径向凸肋构成， 径向凸肋与所述排水口一侧相切。
11、 根据权利要求 1 所述的自清洁洗衣机， 其特征在于： 所述的挡水凸肋为外桶底中 心至所述排水口一侧的弧形凸肋构成， 弧形凸肋与所述排水口一侧的轮廓平滑过渡。
12、 根据权利要求 10或 11所述的自清洁洗衣机， 其特征在于： 所述的挡水凸肋高度 为 5_20mm。
13、 根据权利要求 10或 11所述的自清洁洗衣机， 其特征在于： 所述的挡水凸肋由外 桶底表面沿圆周方向顺时针或逆时针渐低变化时最高和最低连接处的高度差断面形成。
PCT/CN2013/080414 2013-06-28 2013-07-30 一种自清洁洗衣机 WO2014205886A1 (zh)

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