WO2020156493A1 - 洗衣机 - Google Patents

洗衣机 Download PDF

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Publication number
WO2020156493A1
WO2020156493A1 PCT/CN2020/074069 CN2020074069W WO2020156493A1 WO 2020156493 A1 WO2020156493 A1 WO 2020156493A1 CN 2020074069 W CN2020074069 W CN 2020074069W WO 2020156493 A1 WO2020156493 A1 WO 2020156493A1
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WO
WIPO (PCT)
Prior art keywords
tub
washing
washing machine
chamber
water
Prior art date
Application number
PCT/CN2020/074069
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English (en)
French (fr)
Inventor
赵志强
许升
吕佩师
Original Assignee
青岛海尔洗衣机有限公司
海尔智家股份有限公司
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Application filed by 青岛海尔洗衣机有限公司, 海尔智家股份有限公司 filed Critical 青岛海尔洗衣机有限公司
Priority to JP2021544232A priority Critical patent/JP7293367B2/ja
Publication of WO2020156493A1 publication Critical patent/WO2020156493A1/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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/087—Water level measuring or regulating devices
    • 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
    • D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry 
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/34—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of water filling
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements

Definitions

  • the invention belongs to the field of washing equipment, and specifically relates to a washing machine.
  • Existing pulsator washing machines as shown in FIG. 1, generally include a pulsator 1', an inner tub 2', an outer tub 3', and a box 4'arranged in order from the inside to the outside, wherein the pulsator 1'is arranged in The bottom center of the inner tub 2'can be driven to rotate by the driving device 5'.
  • the top of the inner tub 2' is provided with a balance ring 6', the side wall of the inner tub 2'is provided with multiple rows of dehydration holes 21' longitudinally, and the bottom of the inner tub 2'is provided with drain holes 22'.
  • the drain holes 22' are also The output shaft 51' of the driving device 5'penetrates.
  • the bottom of the side wall of the outer barrel 3' is provided with an air chamber 31' and a water level sensor (not shown in the figure), the upper part is provided with an overflow port 32', the bottom is provided with a drain 7', and an air chamber 31'
  • the water level sensor is used to detect the water level of the outer barrel 3', and the overflow port 32' is used to discharge excessive water from the overflow port 32' when the water level sensor is damaged.
  • the washing machine starts to work, the drain valve 8'is closed, and water enters the inner tub 2'.
  • the water flows into the inner tub 2', it also fills the entire outer tub 3'through the dehydration hole 21' on the side wall of the inner tub 2', that is, Water is filled between the bottom of the outer barrel 3'and the bottom of the inner barrel 2', and between the side walls of the outer barrel 3'and the inner barrel 2'; the water level in the barrel is detected by the air chamber 31' and the water level sensor.
  • the driving device 5' drives the pulsator 1'to reciprocate.
  • the washing machine needs to drain the water in the tub and then dehydrate the clothes.
  • the drain valve 8' When draining, open the drain valve 8', and the water flow between the outer tub 3'and the inner tub 2'is discharged from the tank 4'through the drain port 7'at the bottom of the outer tub 3', the drain valve 8', and the drain pipe 9'.
  • the water in the inner barrel 2' is discharged from the dehydration hole 21' to keep the liquid level consistent with the outer barrel 3', until finally the water in the inner barrel 2'flows downward, and flows into the outer barrel from the drain hole 22' at the bottom of the inner barrel 2'
  • the barrel 3' is then discharged from the drain 7'at the bottom of the outer barrel 3'; during dehydration, the driving device 5'drives the inner barrel 2'to rotate at a high speed, and the moisture in the clothes is removed from the side wall of the inner barrel 2'under the action of centrifugal force.
  • the dehydration hole 21' and the drain hole 22' at the bottom are discharged to the outer tub 3', and then discharged from the washing machine through the drain 7'and the drain pipe 9'(refer to Figure 1).
  • the entire inner tub adopts a closed water storage design, and only a circle of dehydration holes is provided on the barrel wall below the balance ring.
  • the lower part of the wall is no longer equipped with leaking holes for water throwing, and all the washing and rinsing water is concentrated in the inner bucket, making it both a washing bucket and a centrifugal dehydration bucket.
  • the outer bucket of the water-saving washing machine is actually just one It is responsible for collecting the channels for throwing water out of the non-porous inner bucket during dehydration.
  • the washing machine is divided into two structures: the bottom of the inner tub is equipped with a drain port and the bottom of the tub is completely sealed.
  • the water-saving washing machine with a drain port at the bottom of the tub.
  • the inner bucket When the drain port is opened, the inner bucket first drains most of the water through the drain port.
  • the inner bucket rotates at high speed, and the residual water in the clothes moves upwards along the wall of the non-porous inner bucket under the action of centrifugal force.
  • the holes are thrown into the outer barrel, and then drained out of the machine through the drain pipe that collects to the bottom of the outer barrel through the outer barrel wall.
  • a water-saving washing machine with a completely sealed bottom of the tub controls the rotation speed of the inner tub to drain the water in the inner tub from a circle of dehydration holes on the upper part of the tub wall.
  • the dehydration is the same as the above method. Because the washing machine saves the water in the "interlayer" of the inner and outer tubs of the traditional washing machine, the water saving effect can reach more than 50% on average.
  • the Chinese patent with application number CN201120200858.4 discloses a water-saving washing machine with a non-porous inner tub, which includes a control seat, a cabinet, a non-porous washing inner tub, a pulsator, a tub, a drive system, and a control system.
  • the cabinet A control seat is installed on the control seat, a control system is installed on the control seat, a bucket is suspended in the box, a non-porous washing inner bucket is installed in the bucket, a pulsator is installed in the non-porous washing inner bucket, and the drive system is connected to the non-porous washing inner bucket
  • the body of the non-porous washing inner tub has no water outlet holes, the upper part is provided with water outlet holes, and the bottom is provided with a centrifugal drainage structure.
  • the flow valve is used to detect the water inlet to control the water level of the inner tub or the weight sensor is used to detect the weight change to calculate the water inlet.
  • the technology of relying solely on the flow valve to detect the water inflow or the weight sensor to detect the water inflow for some special cases, for example, there is some water in the inner barrel before the water enters, and the flow valve cannot detect the water overflow or the flow rate due to the water entering as usual.
  • the failure of the valve causes the water to enter continuously, or during washing, the washing water in the inner tub generates vortex and surge under the violent reciprocating agitation of the pulsator, and part of the washing water splashes into the outer tub through the dehydration hole under the balance ring due to the surge. ,
  • the washing machine causes "water loss", which affects the washing effect.
  • the technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a washing machine that accurately detects the height of the liquid level in a rotating tub that can hold water.
  • a washing machine including: a casing
  • the washing bucket as a water bucket, is rotatably arranged in the casing of the washing machine;
  • the washing tub has,
  • the first chamber is used to hold and wash fabrics
  • the second chamber communicates with the first chamber at least at the bottom, so that the liquid levels of the two chambers are kept consistent and are isolated from the fabric in the first chamber;
  • the washing machine is also provided with a liquid level detecting device for detecting the height of the liquid level in the second chamber.
  • the liquid level detection device is a non-contact liquid level measurement device.
  • a further solution is that a communicating device extending from bottom to top is provided on the outer peripheral wall of the washing tub, and the lower part of the washing tub is provided with a water passage communicating with the communicating device.
  • the space inside the washing tub constitutes the first chamber and the space inside the communicating device Form the second chamber.
  • a further alternative is that a communicating device extending from bottom to top is provided on the inner peripheral wall of the washing tub to divide the inner space of the washing tub into two chambers.
  • the space inside the communicating device forms the second chamber, and the outside of the communicating device.
  • the space formed by the first chamber is provided with a water passage connecting the two chambers at the lower part of the communicating device.
  • a further solution is that the upper part of the communicating device is provided with a vent that communicates with the outside atmosphere, the level of the vent is higher than the preset height of the highest water level of the washing tub, and the level of the water port is not higher than the preset The height of the lowest water level of the washing tub;
  • the air vent on the upper part of the communicating device constitutes a water outlet that is thrown out by the rotating centrifugal force of the washing tub;
  • the upper part of the peripheral wall of the washing tub is provided with a water outlet for throwing water outward under the action of the rotating centrifugal force of the washing tub, and the height of the water outlet is higher than the preset height of the highest water level of the washing tub.
  • the washing machine further includes an outer tub located outside the washing tub. During dehydration and/or drainage, the water in the communicating device is thrown into the outer tub from the vent to be discharged from the vent under the action of the centrifugal force of the rotation of the washing tub;
  • the vent is located below the outer cover.
  • a further solution is that the outer peripheral wall of the washing tub and the outer side of the communicating device are respectively provided with drainage channels that conduct water from top to bottom.
  • the upper part of the drainage channel communicates with the water outlet, and the lower end drains into the outer tub.
  • At least a part is arranged below the washing tub, and the upper edge of the side peripheral wall of the outer tub extends upward and is higher than the position where the water outlet at the lower end of the drainage channel is located;
  • the upper edge of the outer tub is not higher than the upper opening of the washing tub
  • the upper edge of the outer tub is not higher than half of the washing tub.
  • the liquid level detecting device includes an ultrasonic liquid level measuring device, which is installed on the washing machine control panel above the second chamber or the outer cover of the washing machine, or installed outside the washing machine below the second chamber On the bottom of the tub, or on the drive unit mounting part under the bottom of the outer tub of the washing machine, or on the shell.
  • the liquid level detection device is a non-contact liquid level measurement device, including a radar liquid level measuring device or a laser liquid level measuring device, and an opening is provided on the top of the second chamber, and the liquid level detection The device is installed directly above the top opening of the second chamber;
  • it is installed on the lower part of the washing machine control panel seat or on the lower surface of the washing machine outer tub cover.
  • the washing machine further includes a pulsator installed inside the washing tub, the pulsator is coaxial with the washing tub, and a communicating device extending from bottom to top is arranged at the center of the pulsator to separate the internal space of the washing tub There are two chambers, the space inside the communicating device constitutes the second chamber, the space outside the communicating device constitutes the first chamber, and the lower part of the communicating device is provided with a water passage connecting the two chambers;
  • the outer wall of the communicating device forms a stirring structure of the pulsator.
  • the top of the communicating device is closed, the upper side wall is provided with a vent, and the liquid level detecting device is a non-contact liquid level measuring device, which is installed on the lower surface of the upper cover of the washing machine;
  • the liquid level detection device is located directly above the communicating device.
  • the present invention has the following beneficial effects compared with the prior art.
  • the washing machine of the present invention mainly aims at the liquid level detection of the "non-porous inner tub” washing machine, adopts non-contact liquid level detection, and uses a liquid level detection device with a certain distance to measure the height of the liquid level remotely, in order to avoid washing the tub The influence of the inner fabric on the detection.
  • the chamber for level detection is isolated from the chamber for washing the fabric in the washing tub. It has extremely high reliability, accurate measurement, mature and reliable technical solutions, low prices, and can meet user needs and effectively improve customer satisfaction.
  • the washing machine of the present invention can be used not only for a water-saving washing machine with "no water in the tub", but also for an expanded washing machine with a relatively expanded washing capacity, and has a wide range of applications, saving R&D and production costs.
  • Figure 1 is a schematic structural diagram of a prior art washing machine
  • Figure 2 is a schematic diagram of the outer tub structure of a prior art washing machine
  • Figure 3 is a schematic structural view of the liquid level detection device of the present invention installed on the upper surface of the outer drum cover;
  • FIG. 4 is a schematic structural diagram of the liquid level detection device of the present invention installed at the bottom of the outer barrel;
  • Figure 5 is a schematic structural view of the liquid level detection device of the present invention installed on the lower surface of the outer drum cover;
  • Figure 6 is a schematic structural view of a drainage method of the washing machine of the present invention.
  • Fig. 7 is a structural diagram of the communicating device of the present invention installed in the center of the pulsator.
  • connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present invention can be understood in specific situations.
  • the washing machine of the present invention includes a housing 1, a washing tub 2 rotatably arranged in the housing 1, the washing tub 2 is a water tub, and the upper part of the washing tub 2 is provided with a balance Ring 3, the outside of the washing tub 2 is provided with an outer tub 4 for collecting the water discharged from the washing tub.
  • the outer tub 4 is connected to the housing 1 through a vibration damping unit to support the washing tub 2.
  • the vibration damping unit can be suspended by a boom
  • the structure and/or bottom vibration damping support structure as shown in the figure, adopts the suspension rod suspension vibration damping structure.
  • the washing tub 2 has a first chamber 21 and a second chamber 22.
  • the first chamber 21 is used to hold and wash fabrics.
  • the second chamber 22 communicates with the first chamber 21 at least at the bottom, so that the two The liquid level of the chamber remains the same and is isolated from the fabric in the first chamber 21; the washing machine is also provided with a liquid level detection device 5 that detects the height of the liquid level in the second chamber 22. The liquid level height obtains the water level data of the washing tub.
  • the liquid level detection device 5 is a non-contact liquid level measurement device, including at least one of an ultrasonic liquid level measuring device 51, a radar liquid level measuring device 52, and a laser liquid level measuring device 53.
  • the upper part of the peripheral wall of the washing tub 2 of the present invention is provided with a water outlet 20 that is thrown out by the rotating centrifugal force of the washing tub.
  • the height of the water outlet is higher than the preset height of the highest water level of the washing tub.
  • the water in the washing tub 2 is discharged from the water outlet 20 into the outer tub 4 by the centrifugal force of the rotation of the washing tub, and then discharged from the drainage structure 6 at the bottom of the outer tub 4.
  • the balance ring 3 and the washing tub 2 are sealed and arranged, and various existing sealing installation structures can be adopted.
  • the outer peripheral wall of the washing tub 2 is provided with a drainage channel 7 that conducts water from top to bottom.
  • the upper part of the drainage channel 7 communicates with the water outlet 20, and the lower end drains into the outer tub 4.
  • At least a part of the outer tub 4 is set below the washing tub 2, and the upper edge of the side peripheral wall of the outer tub 4 extends upward and is higher than the position where the water outlet at the lower end of the drainage channel 7 is located; preferably, the upper edge of the outer tub 4 is not higher than the washing
  • the upper part of the tub 2 is open; more preferably, the upper edge of the outer tub 4 is not higher than half of the washing tub 2.
  • a communicating device 8 extending from bottom to top is provided on the outer peripheral wall of the washing tub 2, and a water passage 81 communicating with the communicating device 8 is provided at the lower part of the washing tub 2
  • the space inside the washing tub 2 forms the first chamber 21, and the space inside the communicating device 8 forms the second chamber 22.
  • the communicating device 8 preferably has a tubular structure, or it can be a cover provided on the outer peripheral wall of the washing tub 2 and matched with the outer peripheral wall of the washing tub 2 to form a second chamber 22 between the cover and the outer peripheral wall of the washing tub.
  • the upper part of the communicating device 8 is provided with a vent 82 communicating with the outside atmosphere.
  • the level of the vent 82 is higher than the preset maximum water level of the washing tub 2, and the level of the water port 81 is not higher than the preset The height of the lowest water level of the washing tub 2.
  • a communicating device (not shown in the figure) extending from bottom to top is provided on the inner peripheral wall of the washing tub to divide the interior space of the washing tub into two chambers.
  • the space in the second chamber constitutes the second chamber
  • the space outside the communicating device constitutes the first chamber
  • the lower part of the communicating device is provided with a water passage connecting the two chambers.
  • the air vent 82 on the upper part of the communicating device 8 constitutes a water outlet that is thrown out by the rotating centrifugal force of the washing tub.
  • the air vent 82 is provided on the top of the communicating device 8 and located below the outer tub cover 41.
  • the communicating device 8 drains water, the water is directly thrown out from the vent 82, blocked by the outer tub lid 41, and then falls into the outer tub 4 (See Figure 3 to Figure 5).
  • the vent 82 is provided on the side wall of the communicating device 8.
  • the side wall of the communicating device 8 is also provided with a drainage channel 7 that conducts water from top to bottom, and the upper part of the drainage channel 7 communicates with the vent 82 , The lower end drains into the outer barrel 4 (see Figure 6).
  • the liquid level detecting device 5 of this embodiment includes an ultrasonic liquid level measuring device 51, which is installed on the washing machine control panel seat or the washing machine outer tub cover 41 above the second chamber 22 (refer to FIGS. 3 and 5), or, Installed on the bottom of the outer tub of the washing machine under the second chamber 22 (see Figure 4), or installed on the drive unit mounting part (not shown in the figure) below the bottom of the outer tub of the washing machine, or installed in the second chamber On the lower shell (not shown in the figure).
  • an ultrasonic liquid level measuring device 51 which is installed on the washing machine control panel seat or the washing machine outer tub cover 41 above the second chamber 22 (refer to FIGS. 3 and 5), or, Installed on the bottom of the outer tub of the washing machine under the second chamber 22 (see Figure 4), or installed on the drive unit mounting part (not shown in the figure) below the bottom of the outer tub of the washing machine, or installed in the second chamber On the lower shell (not shown in the figure).
  • the vent 82 of the communicating device 8 in this embodiment is provided at the top of the communicating device 8. It can also be provided on the side wall of the communicating device 8.
  • the ultrasonic liquid level measuring device described in this embodiment has a power cord for power supply, and a signal line connected to the controller of the washing machine to feed back the liquid level signal in the second chamber.
  • the ultrasonic level measuring device 51 is installed on the upper surface of the outer barrel cover 41 above the second chamber 22, and the transmitting end emits ultrasonic pulses through the air, the outer barrel cover 41, or, as shown in FIG. It is shown that the ultrasonic level measuring device 51 is fixed on the lower surface of the outer drum cover 41, so the ultrasonic pulse does not need to pass through the outer drum cover, but can also be fixed on the control panel seat (not shown in the figure), passing through the outer drum cover.
  • the ultrasonic level measuring device 8 measures the time required for the ultrasonic pulse to go back and forth, and calculates the distance to the liquid level according to the sound velocity of the medium to determine the height of the liquid level.
  • the ultrasonic level gauge 51 is installed at the bottom of the outer barrel or at any position.
  • the transmitter emits ultrasonic pulses, which can effectively penetrate the bottom wall of the outer barrel. If it is fixed inside the outer barrel, it does not need to pass through the bottom of the outer barrel.
  • the wall is transmitted to the liquid surface in the liquid to be measured in the second chamber 22, is reflected by the liquid surface, passes through the liquid medium, the bottom wall of the outer barrel, and returns to the receiving end of the ultrasonic level gauge 51, and the ultrasonic pulse is measured
  • the time required to go back and forth in the liquid is calculated based on the sound velocity of the medium to calculate the distance to the liquid level to determine the height of the liquid level.
  • the liquid level detection device 5 of this embodiment includes a radar liquid level measuring device 52 or a laser liquid level measuring device 53, and the top of the second chamber 22 is provided with an opening 82, that is, a vent,
  • the liquid level detection device 5 is installed directly above the top opening 82 of the second chamber 22; preferably, it is installed on the lower part of the washing machine control panel seat or on the lower surface of the washing machine outer tub cover 41.
  • the laser level measuring device 53 is provided with a power cord for power supply, and a signal line is connected to the controller to feed back a liquid level height signal.
  • the emitting end of the laser level gauge 53 emits laser light, passes through the air, and is reflected by the liquid surface to the receiving end of the laser level gauge 53, to measure the time required for the laser to go back and forth, and calculate the distance to the liquid level according to the speed of light of the medium To determine the height of the liquid level.
  • the radar level gauge 52 emits radar, passes through the air, and is reflected by the liquid surface to the radar level gauge 52, and is received by the radar level gauge 52.
  • the radar round-trip time is measured, based on the radio propagation speed of the medium. , Calculate the distance to the liquid level to determine the height of the liquid level.
  • the washing machine described in this embodiment further includes a pulsator 9 installed inside the washing tub 2.
  • the pulsator 9 is coaxial with the washing tub 2.
  • the communicating device 8 extending downward and upward divides the internal space of the washing tub 2 into two chambers.
  • the space inside the communicating device 8 constitutes the second chamber 22, and the space outside the communicating device 8 constitutes the first chamber 21, and the communicating device 8
  • the lower part is provided with a water passage 81 connecting the two chambers; preferably, the outer wall of the communicating device 8 forms a pulsator stirring structure.
  • the top of the communicating device 8 is closed, the upper side wall is provided with a vent 82, and the liquid level detecting device 5 is an ultrasonic liquid level measuring device 51 installed on the lower surface of the upper cover 10 of the washing machine;
  • the liquid level detecting device 5 is located directly above the communicating device 8.

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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)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

本发明公开了一种洗衣机，包括外壳，可旋转地设于外壳内的洗涤桶，洗涤桶为盛水桶，所述的洗涤桶具有第一腔室和第二腔室，第一腔室用于盛放并洗涤织物，第二腔室与第一腔室至少在底部相通，使得两腔室的液位保持一致，且与第一腔室中的织物相隔离；洗衣机还设有检测第二腔室内液位高度的液位检测装置，通过检测第二腔室内液位高度获得洗涤桶的水位数据。本发明所述的洗衣机测量水位具有极高的可靠性，测量精准，技术方案成熟可靠，价格低廉，能够满足用户需求，有效提高用户满意度。

Description

洗衣机 技术领域
本发明属于洗涤设备领域，具体地说，涉及一种洗衣机。
背景技术
现有的波轮式洗衣机，如图1所示，一般包括从内至外依次设置的波轮1’、内桶2’、外桶3’和箱体4’，其中，波轮1’设置在内桶2’的底部中央并可由驱动装置5’带动旋转。内桶2’的顶部上设置有平衡环6’，内桶2’的侧壁上纵向设置有多列脱水孔21’，内桶2’底部设置有泄水孔22’，该泄水孔22’同时也供驱动装置5’的输出轴51’贯穿。如图2所示，外桶3’侧壁底部设有气室31’和水位传感器(图中未示出)，上部设有溢水口32’，底部设有排水口7’，气室31’和水位传感器用于检测外桶3’水位，溢水口32’用于水位传感器损坏时，进水过多从该溢水口32’排出。
洗衣机开始工作，排水阀8’关闭，进水到内桶2’中，水流在充满内桶2’时，也经内桶2’侧壁上的脱水孔21’而充满整个外桶3’，也即，外桶3’底部与内桶2’底部之间、外桶3’侧壁与内桶2’侧壁之间都充满有水；通过气室31’和水位传感器检测桶内的水位，在桶内的水达到设定水位后，停止进水，洗衣机开始洗涤，具体地，驱动装置5’带动波轮1’往复旋转，在波轮1’的旋转带动下，内桶2’内的水以及衣物会随之翻滚，衣物相互摩擦，同时翻滚的衣物又与波轮和内桶的侧壁产生反复的摩擦而达到洗涤的目的；洗涤完毕，洗衣机需要将桶内的水流排出，继而将衣物脱水，具体地，排水时，打开排水阀8’，外桶3’与内桶2’之间的水流依次由外桶3’底部的排水口7’、排水阀8’、排水管9’排出箱体4’之外，同时，内桶2’内的水由脱水孔21’排出与外桶3’保持液面一致，直至最后内桶2’内的水流向下流动，从内桶2’底部的泄水孔22’流入外桶3’，然后再从外桶3’底部的排水口7’排出；脱水时，驱动装置5’驱动内桶2’高速旋转，衣物中的水分在离心力的作用下，从内桶2’侧壁上的脱水孔21’以及底部的泄水孔22’排出到外桶3’，再由排水口7’、排水管9’排出洗衣机外(参阅图1)。
由于现有的波轮式洗衣机，而内桶与外桶壁之间充满的这部分水不参与洗涤，真正参与洗涤的水仅是内桶中的那部分，这使得水资源浪费较大，另外，内外桶之间过多的水也会降低洗涤液中洗涤剂/洗衣粉的浓度。
与此同时，由于水流在内桶、外桶之间频繁进出，持续使用之后，内桶与外桶的侧壁之间的区域也成了藏污纳垢的空间，自来水里的水垢、洗衣粉的游离物、衣物的纤维素、人体的有机物及衣物带入的灰尘与细菌极易滞留在内桶与外桶的侧壁之间。这些霉菌是用久了的洗衣机内部积蓄的大量污垢、因不能有效去除而滋生繁殖的，这些使用者看不到的污垢如果不予清除，那么在下一次洗涤后，细菌又会附着在衣物上而带给人体，造成洗衣交叉感染的问题。
很多厂商为了实现洗涤节水功能，对上述洗衣机作出改进，提出一种无孔内桶洗衣机，即，整个内桶采用封闭盛水设计，仅在平衡环下方的桶壁上设有一圈脱水孔，内桶桶壁中下部不再设有甩水用的漏空小孔，将洗涤、漂洗用水全部集中在内桶中，使其既是盛水洗涤桶，又是离心脱水桶，节水洗衣机的外桶其实只是一个承担汇集无孔内桶在脱水时甩出水的通道。根据排水方式的不同，该洗衣机又分为内桶桶底设有排水口和桶底完全密封两种结构，桶底设有排水口的节水洗衣机，洗涤过程，内桶桶底的排水口关闭，排水时排水口打开，内桶先通过排水口排出大部分水，离心脱水时，内桶高速旋转，衣物中残留的水在离心力的作用下沿着无孔内桶的桶壁向上，通过桶壁上部分的脱水孔甩入外桶，再经外桶壁汇集到外桶底的的排水管排出机外。桶底完全密封的节水洗衣机，则是通过控制内桶转速，将内桶中的水也从桶壁上部一圈脱水孔排出，脱水则和上述方式相同。该洗衣机由于节省了传统洗衣机内外桶“夹层”中的水，节水效果平均可达50％以上。
申请号为CN201120200858.4的中国专利公开了一种无孔内桶节水型洗衣机，包括控制座、箱体、无孔洗涤内桶、波轮、盛水桶、驱动系统和控制系统，所述的箱体上安装有控制座，控制座上安装有控制系统，箱体内悬吊有盛水桶，盛水桶内安装有无孔洗涤内桶，无孔洗涤内桶内安装有波轮，驱动系统连接到无孔洗涤内桶和波轮，所述的无孔洗涤内桶的桶身上无出水孔，上部设有出水孔，底部设有离心式排水结构。
上述节水洗衣机，由于进水直接进入内桶，传统洗衣机外桶中的水位不再能够检测水位，因此均改为利用流量阀检测进水量控制内桶水位或者是利用重量传感器检测重量变化计算进水量，但是，单纯依靠流量阀进行流量检测进水或是重量传感器检测进水的技术，对于一些特殊情况，例如内桶中进水前存有部分水而流量阀无法检测照常进水导致水溢出，或者流量阀失效导致进水不止，再或者洗涤时，内桶中的洗涤水在波轮的剧烈往复搅动下产生旋涡与浪涌，一部分洗涤水因浪涌作用通过平衡环下方的脱水孔涌溅入外桶，使洗衣机造成“失水”，影响了洗涤效果。
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，提供一种对可盛水的旋转桶内液位高度进行精准检测的洗衣机。
为解决上述技术问题，本发明采用技术方案的基本构思是：一种洗衣机，包括：外壳；
洗涤桶，作为盛水桶，可旋转地设于洗衣机外壳内；
所述的洗涤桶具有，
第一腔室，用于盛放并洗涤织物；
第二腔室，与第一腔室至少在底部相通，使得两腔室的液位保持一致，且与第一腔室中的织物相隔离；
洗衣机还设有检测第二腔室内液位高度的液位检测装置。
优选的，所述的液位检测装置为非接触式液位测量装置。
进一步的方案为，在洗涤桶外周壁上设有一自下向上延伸的连通器，洗涤桶下部设有与连通器相通的通水口，洗涤桶内部的空间构成第一腔室，连通器内部的空间构成第二腔室。
或者，进一步的替换方案为，在洗涤桶内周壁上设有一自下向上延伸的连通器，将洗涤桶内部空间分隔成两个腔室，连通器内部的空间构成第二腔室，连通器外部的空间构成第一腔室，连通器下部设有将两腔室相通的通水口。
进一步的方案为，所述连通器上部设有与外界大气相通的通气口，通气口所在的水平高度高于预设的洗涤桶最高水位的高度，通水口所在的水平高度不高于预设的洗涤桶最低水位的高度；
优选的，所述连通器上部的通气口构成受洗涤桶旋转离心力作用向外甩水的出水口；
更优选的，洗涤桶周壁上部设有受洗涤桶旋转离心力作用向外甩水的出水口，出水口的高度高于预设的洗涤桶最高水位的高度。
进一步的方案为，洗衣机还包括外桶，位于洗涤桶外部，在脱水和/或排水时，连通器中的水受洗涤桶旋转的离心力作用由通气口甩至外桶内排出；
优选的，所述的通气口位于外桶盖的下方。
进一步的方案为，所述洗涤桶外周壁上和连通器的外侧分别设有自上向下导水的排水通道，排水通道上部与出水口相通，下端排水至外桶内，所述外桶的至少一部分设于洗涤桶的下方，外桶侧周壁的上沿向上延伸，高于排水通道下端出水口所在的位置；
优选的，外桶的上边沿不高于洗涤桶上部敞口；
更优选的，外桶的上边沿不高于洗涤桶的一半。
进一步的方案为，所述的液位检测装置包括超声波测液位器，安装于第二腔室上方的洗衣机控制盘座或洗衣机外桶盖上，或者，安装于第二腔室下方的洗衣机外桶底上，或者安装于洗衣机外桶底下方的驱动单元安装部件上，再或者安装于外壳上。
或者，替换的方案为，所述的液位检测装置为非接触式液位测量装置，包括雷达测液位器或者激光测液位器，所述第二腔室顶部设有开口，液位检测装置安装于第二腔室顶部开口的正上方；
优选的，安装于洗衣机控制盘座的下部或洗衣机外桶盖的下表面上。
再或者，进一步的替换的方案为，洗衣机还包括安装在洗涤桶内部的波轮，波轮与洗涤桶同轴，波轮的中心设有一自下向上延伸的连通器，将洗涤桶内部空间分隔成两个腔室，连通器内部的空间构成第二腔室，连通器外部的空间构成第一腔室，连通器下部设有将两腔室相通的通水口；
优选的，连通器的外壁形成波轮的搅拌结构。
进一步的，所述的连通器顶部封闭，上部侧壁设有通气口，所述的液位检测装置为非接触式液位测量装置，安装于洗衣机上盖的下表面；
优选的，在上盖关闭时，液位检测装置位于连通器的正上方。
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，主要针对于“无孔内桶”洗衣机的液位检测，采用非接触式液位检测，利用具有一定距离的液位检测装置远距离测量液位的高度，为了避免洗涤桶内织物对检测的影响，将液位检测的腔室与洗涤桶内洗涤织物的腔室隔离，具有极高的可靠性，测量精准，技术方案成熟可靠，价格低廉，能够满足用户需求，有效提高用户满意度。
另外，本发明所述的洗衣机，不仅可以用于“桶间无水”的节水洗衣机，还可以用于相对扩大洗涤容量的扩容洗衣机，应用范围广，节约了研发和生产成本。
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
附图作为本发明的一部分，用来提供对本发明的进一步的理解，本发明的示意性实施例及其说明用于解释本发明，但不构成对本发明的不当限定。显然，下面描述中的附图仅仅是一些实施例，对于本领域普通技术人员来说，在不付出创造性劳动的前提下，还可以根据这些附图获得其他附图。在附图中：
图1是现有技术洗衣机结构示意图；
图2是现有技术洗衣机外桶结构示意图；
图3是本发明液位检测装置安装于外桶盖上表面的结构示意图；
图4是本发明液位检测装置安装于外桶底部的结构示意图；
图5是本发明液位检测装置安装于外桶盖下表面的结构示意图；
图6是本发明洗衣机一种排水方式的结构示意图；
图7是本发明连通器安装于波轮中心的结构示意图。
需要说明的是，这些附图和文字描述并不旨在以任何方式限制本发明的构思范围，而是通过参考特定实施例为本领域技术人员说明本发明的概念。
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中的附图，对实施例中的技术方案进行清楚、完整地描述，以下实施例用于说明本发明，但不用来限制本发明的范围。
在本发明的描述中，需要说明的是，术语“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“内”、“外”等指示的方位或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。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”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；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
如图3至图7所示，本发明所述的一种洗衣机，包括外壳1，可旋转地设于外壳1内的洗涤桶2，洗涤桶2为盛水桶，洗涤桶2的上部设有平衡环3，洗涤桶2外部设有用于收集洗涤桶排出水的外桶4，外桶4通过减振单元与外壳1连接，用以支撑洗涤桶2，该减振单元可采用吊杆悬挂减振结构和/或底部减振支撑结构，图示采用吊杆悬挂减振结构。所述的洗涤桶2具有第一腔室21和第二腔室22，第一腔室21用于盛放并洗涤织物，第二腔室22与第一腔室21至少在底部相通，使得两腔室的液位保持一致，且与第一腔室21中的织物相隔离；洗衣机还设有检测第二腔室22内液位高度的液位检测装置5，通过检测第二腔室22内液位高度获得洗涤桶的水位数据。
优选的，所述的液位检测装置5为非接触式液位测量装置，包括超声波测液位器51、雷达测液位器52和激光测液位器53中的至少一种。
本发明所述洗涤桶2周壁上部设有受洗涤桶旋转离心力作用向外甩水的出水口20，出水口的高度高于预设的洗涤桶最高水位的高度，在脱水和/或排水时，洗涤桶2中的水受洗涤桶旋转的离心力作用由出水口20排出至外桶4内，然后由外桶4底部的排水结构6排出。为了防止水从平衡环3和洗涤桶2之间的安装间隙甩出，平衡环3与洗涤桶2之间密封设置，可采用现有各种密封安装结构。
进一步的，如图6所示，所述洗涤桶2外周壁上设有自上向下导水的排水通道7，排水通道7上部与出水口20相通，下端排水至外桶4内，所述外桶4的至少一部分设于洗涤桶2的下方，外桶4侧周壁的上沿向上延伸，高于排水通道7下端出水口所在的位置；优选的，外桶4的上边沿不高于洗涤桶2上部敞口；更优选的，外桶4的上边沿不高于洗涤桶2的一半。
实施例一
如图3和图4所示，本实施例所述的洗衣机，在洗涤桶2外周壁上设有一自下向上延伸的连通器8，洗涤桶2下部设有与连通器8相通的通水口81，洗涤桶2内部的空间构成第一腔室21，连通器8内部的空间构成第二腔室22。该连通器8优选为管状结构，也可以为一盖体罩设在洗涤桶2外周壁上，与洗涤桶2外周壁配合，在盖体与洗涤桶外周壁之间形成第二腔室22。
所述连通器8上部设有与外界大气相通的通气口82，通气口82所在的水平高度高于预设的洗涤桶2最高水位的高度，通水口81所在的水平高度不高于预设的洗涤桶2最低水位的高度。
实施例二
本实施例与上述实施例一的区别在于，在洗涤桶内周壁上设有一自下向上延伸的连通器(图中未示出)，将洗涤桶内部空间分隔成两个腔室，连通器内部的空间构成第二腔室，连通器外部的空间构成第一腔室，连通器下部设有将两腔室相通的通水口。
实施例三
在上述实施例的基础上，所述连通器8上部的通气口82构成受洗涤桶旋转离心力作用向外甩水的出水口。
所述通气口82设于连通器8的顶部，位于外桶盖41的下方，连通器8排水时，直接将水由通气口82甩出，被外桶盖41阻挡后落至外桶4内(参阅图3至图5)。
或者，所述通气口82设于连通器8的侧壁上，优选的，连通器8的侧壁上还设有自上向下导水的排水通道7，排水通道7上部与通气口82相通，下端排水至外桶4内(参阅图6)。
实施例四
本实施例所述的液位检测装置5包括超声波测液位器51，安装于第二腔室22上方的洗衣机控制盘座或洗衣机外桶盖41上(参阅图3和图5)，或者，安装于第二腔室22下方的洗衣机外桶底上(参阅图4)，或者安装于洗衣机外桶底下方的驱动单元安装部件上(图中未示出)，再或者安装于第二腔室下方的外壳上(图中未示出)。
由于超声波测液位器51发射的超声波不受外桶盖41、外桶底壁等洗衣机结构的阻挡，因此，本实施例所述连通器8的通气口82除了设置于连通器8的顶部，也可设于连通器8的侧壁上。
本实施例所述的超声波测液位器，具有电源线供电，并有信号线连接洗衣机的控制器，反馈第二腔室内的液位高度信号。
如图3所示，超声波测液位器51安装于第二腔室22上方的外桶盖41上表面上，发射端发射超声波脉冲，穿过空气，外桶盖41，或者，如图5所示，超声波测液位器51固定在外桶盖41下表面上，则发射超声波脉冲无需穿过外桶盖，也可固定在控制盘座上(图中未示出)，穿过外桶盖，直接由连通器8顶部的开口82进入第二腔室22内，或者穿过连通器8顶壁进入第二腔室22内，然后超声波脉冲经液面反射，以相反的路径回到超声波测液位器8的接收端，超声波测液位器8测出超声脉冲往返所需时间，根据介质的声速，计算到液位之间距离，从而确定液面的高度。
或者，如图4所示，超声波测液位器51安装在外桶底部或者任意位置，发射端发射超声波脉冲，可以有效穿透外桶底壁，若固定在外桶内侧，则无需穿过外桶底壁，在第二腔室22的被测液体中传播至液面，经液面反射再透过液体介质、外桶底壁，返回到超声波测液位器51的接收端，测出超声脉冲在液体中往返所需时间，根据介质的声速，计算到液位之间距离，从而确定液面的高度。
当然，还可以通过回波检测等方法，进一步提高测定精度或者消除因为不同介质造成的误差影响。
实施例五
如图5所示，本实施例所述的液位检测装置5包括雷达测液位器52或者激光测液位器53，所述第二腔室22顶部设有开口82，也即通气口，液位检测装置5安装于第二腔室22顶部开口82的正上方；优选的，安装于洗衣机控制盘座的下部或洗衣机外桶盖41的下表面上。
激光测液位器53，具有电源线供电，并有信号线连接控制器，反馈液位高度信号。
激光测液位器53发射端发射激光，穿过空气，经液面反射到激光测液位器53的接收端，测出激光往返所需时间，根据介质的光速，计算到液位之间距离，从而确定液面的高度。
而雷达测液位器52则发射雷达，穿过空气，经液面反射到雷达测液位器52，被雷达测液位器52接收，测出雷达往返所需时间，根据介质的无线电传播速度，计算到液位之间距离，从而确定液面的高度。
实施例六
如图7所示，与上述实施例不同，本实施例所述的洗衣机还包括安装在洗涤桶2内部的波轮9，波轮9与洗涤桶2同轴，波轮9的中心设有一自下向上延伸的连通器8，将洗涤桶2内部空间分隔成两个腔室，连通器8内部的空间构成第二腔室22，连通器8外部的空间构成第一腔室21，连通器8下部设有将两腔室相通的通水口81；优选的，连通器8的外壁形成波轮的搅拌结构。
进一步的，所述的连通器8顶部封闭，上部侧壁设有通气口82，所述的液位检测装置5为超声波测液位器51，安装于洗衣机上盖10的下表面；
优选的，在上盖10关闭时，液位检测装置5位于连通器8的正上方。
以上所述仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专利的技术人员在不脱 离本发明技术方案范围内，当可利用上述提示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明方案的范围内。

Claims (10)

  1. 一种洗衣机，包括：外壳；
    洗涤桶，作为盛水桶，可旋转地设于洗衣机外壳内；
    其特征在于：所述的洗涤桶具有，
    第一腔室，用于盛放并洗涤织物；
    第二腔室，与第一腔室至少在底部相通，使得两腔室的液位保持一致，且与第一腔室中的织物相隔离；
    洗衣机还设有检测第二腔室内液位高度的液位检测装置。
  2. 根据权利要求1所述的洗衣机，其特征在于：在洗涤桶外周壁上设有一自下向上延伸的连通器，洗涤桶下部设有与连通器相通的通水口，洗涤桶内部的空间构成第一腔室，连通器内部的空间构成第二腔室。
  3. 根据权利要求1所述的洗衣机，其特征在于：在洗涤桶内周壁上设有一自下向上延伸的连通器，将洗涤桶内部空间分隔成两个腔室，连通器内部的空间构成第二腔室，连通器外部的空间构成第一腔室，连通器下部设有将两腔室相通的通水口。
  4. 根据权利要求2或3所述的洗衣机，其特征在于：所述连通器上部设有与外界大气相通的通气口，通气口所在的水平高度高于预设的洗涤桶最高水位的高度，通水口所在的水平高度不高于预设的洗涤桶最低水位的高度；
    优选的，所述连通器上部的通气口构成受洗涤桶旋转离心力作用向外甩水的出水口；
    更优选的，洗涤桶周壁上部设有受洗涤桶旋转离心力作用向外甩水的出水口，出水口的高度高于预设的洗涤桶最高水位的高度。
  5. 根据权利要求4所述的洗衣机，其特征在于：还包括外桶，位于洗涤桶外部，在脱水和/或排水时，连通器中的水受洗涤桶旋转的离心力作用由通气口甩至外桶内排出；
    优选的，所述的通气口位于外桶盖的下方。
  6. 根据权利要求4所述的洗衣机，其特征在于：所述洗涤桶外周壁上和连通器的外侧分别设有自上向下导水的排水通道，排水通道上部与出水口相通，下端排水至外桶内，所述外桶的至少一部分设于洗涤桶的下方，外桶侧周壁的上沿向上延伸，高于排水通道下端出水口所在的位置；
    优选的，外桶的上边沿不高于洗涤桶上部敞口；
    更优选的，外桶的上边沿不高于洗涤桶的一半。
  7. 根据权利要求1所述的洗衣机，其特征在于：所述的液位检测装置包括超声波测液位器，安装于第二腔室上方的洗衣机控制盘座或洗衣机外桶盖上，或者，安装于第二腔室下方的洗衣机外桶底上，或者安装于洗衣机外桶底下方的驱动单元安装部件上，再或者安装于外壳上。
  8. 根据权利要求1所述的洗衣机，其特征在于：所述的液位检测装置为非接触式液位测量装置，包括雷达测液位器或者激光测液位器，所述第二腔室顶部设有开口，液位检测装置安装于第二腔室顶部开口的正上方；
    优选的，安装于洗衣机控制盘座的下部或洗衣机外桶盖的下表面上。
  9. 根据权利要求1所述的洗衣机，其特征在于：还包括安装在洗涤桶内部的波轮，波轮与洗涤桶同轴，波轮的中心设有一自下向上延伸的连通器，将洗涤桶内部空间分隔成两个腔室，连通器内部的空间构成第二腔室，连通器外部的空间构成第一腔室，连通器下部设有将两腔室相通的通水口；
    优选的，连通器的外壁形成波轮的搅拌结构。
  10. 根据权利要求9所述的洗衣机，其特征在于：所述的连通器顶部封闭，上部侧壁设有通气口，所述的液位检测装置为非接触式液位测量装置，安装于洗衣机上盖的下表面；
    优选的，在上盖关闭时，液位检测装置位于连通器的正上方。
PCT/CN2020/074069 2019-02-01 2020-01-29 洗衣机 WO2020156493A1 (zh)

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