WO2016206598A1 - 地面清洁机器人 - Google Patents

地面清洁机器人 Download PDF

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Publication number
WO2016206598A1
WO2016206598A1 PCT/CN2016/086858 CN2016086858W WO2016206598A1 WO 2016206598 A1 WO2016206598 A1 WO 2016206598A1 CN 2016086858 W CN2016086858 W CN 2016086858W WO 2016206598 A1 WO2016206598 A1 WO 2016206598A1
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Prior art keywords
water
suction port
cleaning robot
strip
scraper
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PCT/CN2016/086858
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English (en)
French (fr)
Inventor
徐连斌
王寿木
唐泽恒
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科沃斯机器人股份有限公司
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Publication of WO2016206598A1 publication Critical patent/WO2016206598A1/zh

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction

Definitions

  • the invention relates to a ground cleaning robot, belonging to the technical field of daily household appliance manufacturing.
  • the ground cleaning robot occupies a broad market as a small household appliance.
  • the suction nozzle used in the existing ground cleaning robot on the market is usually perpendicular to the ground.
  • the US patent US2010275405A1 has a dust suction port, a sprinkling portion, and a roller on the bottom of the robot.
  • the brush and the suction port perpendicular to the ground, the dry/light dust is directly sucked into the dust box by the suction port, and the solid waste stuck on the ground is sucked into the water tank through the suction port after being loosened by an auxiliary tool such as a brush or a roller brush.
  • the technical problem to be solved by the present invention is to provide a ground cleaning robot including a sewage tank and a sprinkling portion and a water suction port provided at the bottom of the robot, the sprinkling portion is located at the front of the water suction port, and the sprinkling portion is used for the deficiencies of the prior art.
  • the cleaning liquid is arranged to the ground, the water suction port is used for recovering the sewage to the sewage tank, and the bottom of the robot is further provided with a dust suction port between the water sprinkling portion and the water suction port.
  • the water suction port is arranged to have a slope with the ground, the suction port and the water suction port are adjacent to each other and are separated by the inner partition plate, and the water suction port not only absorbs water, but also blocks the solid waste on the ground at the front end of the water suction port. It makes it easy to be swept into the dust suction port by a roller brush, and has a simple structure but high work efficiency.
  • a ground cleaning robot includes a sewage tank and a sprinkling portion and a water absorbing port disposed at a bottom of the robot, the sprinkling portion is located at a front portion of the water absorbing port, and the sprinkling portion is for arranging the cleaning liquid to the ground, the water absorbing port for recovering the sewage to the sewage
  • the bottom of the robot is further provided with a dust suction port, and the dust suction port is located between the water sprinkling portion and the water suction port.
  • the suction port and the suction port are arranged adjacent to each other.
  • the dust suction port and the water suction port may be separated by an inner partition, the length of the inner partition is smaller than the total length of the suction passage, and the suction port and the suction port respectively communicate the suction passage and the suction passage, the suction passage and the water absorption
  • the channels are combined into one channel to communicate with the recovery tank.
  • the inner baffle is provided with a front scraper strip, and the front side of the front scraper strip is provided with a roller brush, and the dust scraping port is formed between the roller brush and the front scraper strip, and the front scraper strip is disposed behind the suction passage A rear scraper on the wall forms the suction opening.
  • the front and rear wipers are disposed obliquely, and the oblique direction is biased toward the sprinkling portion.
  • the front and rear squeegees form a first angle with the ground, the first angle being 30°-50°, So that the solid waste that is too late to be inhaled is left as far as possible at the front end of the suction port, and is sucked into the suction passage.
  • the housings at both ends of the roller brush are respectively provided with dust-proof sheets, and the dust-proof sheets extend a distance toward the ground.
  • front scraper strip and the rear scraper strip are made of rubber.
  • the front scraper strip and the inner baffle, the rear scraper strip and the rear wall surface of the suction passage are integrally formed.
  • the sprinkling portion includes a water spout and a brush strip, and the spout is disposed on the front side of the brush strip, and is connected to the water tank disposed in the casing through a pipe; or includes a slit
  • the water tank and the brush strip are connected to the water tank disposed in the casing through a pipe, and the bottom of the narrow water tank is provided with a plurality of through holes, and the brush strip is disposed in the plurality of through holes.
  • the water tank is filled with clean water or a cleaning liquid.
  • the dust suction port of the floor cleaning robot provided by the present invention is located between the water sprinkling portion of the sprinkling portion, so that the dust suction port sucks dust in advance, such as large particles of dust or hair after being wetted by the cleaning liquid, and the like.
  • the suction port is blocked.
  • the water suction port is arranged to have a slope with the ground, and the front end of the water suction port is connected to the dust suction port but is separately provided.
  • the water suction port can not only absorb water, but also blocks the solid waste on the ground at the front end of the water suction port, making it easy to be brushed. Sweep into the dust suction port, the structure is simple and the work efficiency is high.
  • FIG. 1 is a schematic overall structural view of a floor cleaning robot according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic view showing the overall structure of a floor cleaning robot according to Embodiment 2 of the present invention.
  • FIG 3 is a cross-sectional view showing a sprinkling portion of a floor cleaning robot according to a second embodiment of the present invention.
  • FIG. 1 is a schematic view showing the overall structure of a floor cleaning robot according to a first embodiment of the present invention.
  • a floor cleaning robot is provided.
  • the robot includes a housing 100 having a suction passage 200 therein.
  • the suction passage 200 is provided with an inner partition 210 to divide the same into an ash passage 201 and a suction passage 202.
  • a roller brush 300 is disposed at an entrance of one end of the dust suction passage 201.
  • the dustproof sheets 310 are respectively disposed on the housings at both ends of the roller brush 300, and the dust shield 310 extends a distance toward the ground.
  • the free end of the dust shield 310 is attached to the ground to increase the vacuum of the suction port.
  • the inner baffle 210 is provided with a front scraper strip 220.
  • the roller brush 300 is located on the front side of the front scraper strip 220.
  • the rear wall surface 260 of the suction passage 200 is provided with a rear scraper strip 230, and the roller brush 300 is A dust suction port 240 is formed between the front scraping strips 220, and a water suction port 250 is formed between the front scraping strips 220 and the rear scraping strips 230.
  • a vacuum source (not shown)
  • dust and sewage are recovered into the sewage tank (not shown) along the suction port 240 and the suction port 250, respectively.
  • the front wiper strip 220 and the rear scraper strip 230 are disposed obliquely to the ground, and the oblique direction is biased toward the sprinkling portion.
  • a first angle ⁇ is formed between the wiper strip and the ground, and the first angle ⁇ can be set to 30°-50°, preferably 45°.
  • the length of the inner partition 210 is smaller than the total length of the suction passage 200, and the suction passage 201 and the suction passage 202 are merged into one passage at the end to be connected to the sewage tank.
  • the ground cleaning robot can use the same vacuum source for vacuuming and absorbing water.
  • different vacuum sources can be selected according to actual needs.
  • a water sprinkling portion 400 is disposed in front of the brush 300.
  • the sprinkling portion 400 includes a water spout 410 and a brush strip 420.
  • the water spout 410 is disposed on the front side of the brush strip 420, and passes through the water tank 430 disposed in the casing 100. Pipes are connected.
  • the water spray port 410 sprays the cleaning liquid onto the ground, and the brush strip 420 uniformly disperses the sprayed liquid.
  • the front scraper 220 and the rear wiper 230 are made of rubber.
  • the front scraper 220 and the inner partition 210, the rear scraper 230, and the rear wall surface 260 of the suction passage 200 may be integrally formed.
  • the water tank 430 may be filled with clean water or a cleaning liquid including a washing liquid or the like as needed. It should be noted that the above mentioned front and back are in accordance with the direction in which the ground cleaning robot moves forward or backward during the operation. In Fig. 1, A is the front.
  • the working process of the floor cleaning robot in this embodiment is as follows:
  • the water spray port 410 sprays water, and the sprayed liquid is evenly dispersed under the action of the brush strip 420, and then under the action of the dust suction port 240 and the roller brush 300 on the front side thereof.
  • the dust is stirred up and sucked into the suction passage 201, and the suction port 250 provided at the rear end of the roller brush 300 recovers the sewage after the ash is sucked.
  • the water suction port 250 is constituted by the front scraper 220 and the rear scraper 230 disposed on the front and rear wall surfaces of the water suction passage 202, and since the water suction port 250 is inclined toward the sprinkling portion, the dust that is too late to be sucked can be kept as much as possible in the water absorption.
  • the front end of the port 250 is sucked into the suction passage 201. Since the same vacuum source, such as the motor, the ash suction passage 201 and the suction passage 202 are finally merged into one passage, water and dirt are sucked into the sewage tank together, and the suction port 240 and the suction port 250 are separately provided. Can improve the absorption effect.
  • the front wiper strip 220 and the rear wiper strip 230 are nearly closed together, leaving only one slit as the suction port 250. Such a configuration ensures that the suction is concentrated to suck the water.
  • the present invention is directed to the deficiencies of the existing products on the market, and the suction port is formed to have a slope with the ground, and the suction port and the suction port are adjacent to each other and are spaced by the inner partition, and the suction port not only It has the effect of absorbing water and plays the role of sweeping solid waste into the suction port.
  • the robot is running, on the ground The solid waste is blocked at the front end of the suction port, and the solid waste is easily swept into the dust suction port by the roller brush, and sucked into the sewage tank such as a water tank or a dust box.
  • FIG. 2 is a schematic view showing the overall structure of a floor cleaning robot according to a second embodiment of the present invention
  • FIG. 3 is a schematic structural view of a watering portion of a floor cleaning robot according to a second embodiment of the present invention.
  • the ground cleaning robot provided in this embodiment is a smart cleaning robot.
  • the working principle and structure are basically the same, except that the sprinkling portion 400'.
  • the sprinkling portion 400' is composed of a narrow water tank 410' and a brush strip.
  • the elongated water tank 410' is connected to a water tank disposed in the casing through a pipe.
  • the narrow water tank 410' is provided with a plurality of through holes 411' at the bottom.
  • the brush strip 420' is disposed in the plurality of through holes 411'. In the process of performing the cleaning operation, the cleaning liquid is applied to the ground through the brush strip 420'.
  • the other working modes are the same as those in the first embodiment, and will not be described herein.
  • the suction port and the suction port can also be completely separated, but it is necessary to ensure that the suction port is located between the sprinkling portion and the suction port, so that the suction port can advance large particles of dust or hair such as hair that easily block the suction port. It can be removed in advance in one step; for example, the dust suction passage and the suction passage can also be separately connected to the dust box and the sewage tank; for example, the roller brush at the position of the suction port can be removed, but the roller brush effect is better.
  • the present invention provides a floor cleaning robot, wherein the dust suction port is located between the sprinkling portion and the water suction port, so that the dust suction port sucks dust in advance, such as large particles of dust or hair after being wetted by the cleaning liquid. Prevent the suction port from becoming clogged.
  • the water suction port is arranged to have a slope with the ground, the suction port and the water suction port are adjacent to each other and are separated by the inner partition plate, and the water suction port not only absorbs water, but also blocks the solid waste on the ground at the front end of the water suction port. It is easy to be swept into the dust suction port by a roller brush, and has a simple structure and high work efficiency.

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Abstract

一种地面清洁机器人，包括污水箱以及设置在机器人底部的洒水部(400、400')和吸水口(250)，洒水部位于吸水口前部，洒水部用于将清洁液布置到地面，吸水口用于回收污水至污水箱，机器人底部还设有吸尘口(240)，吸尘口位于洒水部和吸水口之间，吸尘口和吸水口通过内隔板(210)相间隔，内隔板上设有前刮条(220)，前刮条前侧设有滚刷(300)，滚刷与前刮条之间夹设形成吸尘口，前刮条与设置在吸污通道(200)的后壁面(260)上的后刮条(230)形成所述吸水口，前刮条和后刮条倾斜设置，与地面形成第一角度。所述地面清洁机器人的吸水口不仅可以吸水，还将地面上的固体垃圾挡在吸水口前端处，使其易于被滚刷扫入吸尘口，结构简单且工作效率高。

Description

地面清洁机器人 技术领域
本发明涉及一种地面清洁机器人，属于日用家电制造技术领域。
背景技术
地面清洁机器人作为小家电占有广阔的市场，市场上现有的地面清洁机器人所使用的吸口通常是垂直于地面的，如美国专利US2010275405A1，其机器人底部前后依次设有吸尘口、洒水部、滚刷和垂直于地面的吸水口，干/轻灰尘直接被吸尘口吸入尘盒，粘在地面上的固体垃圾在经过排刷或滚刷等辅助工具搅松之后，通过吸水口吸入水箱，由于受到吸水口大小的限制，大量未吸入吸尘口的固体垃圾，如大颗粒灰尘或毛发，很容易被吸水口挡在吸水口与滚刷的台阶面上，或者吸附在吸水口表面上，从而造成吸水口的堵塞，导致清扫不干净、不彻底。
发明内容
本发明所要解决的技术问题在于针对现有技术的不足，提供一种地面清洁机器人，其包括污水箱以及设置在机器人底部的洒水部和吸水口，洒水部位于吸水口前部，洒水部用于将清洁液布置到地面，所述吸水口用于回收污水至污水箱，机器人底部还设有位于洒水部和吸水口之间的吸尘口。较佳的，吸水口设置成与地面成一个斜度，吸尘口和吸水口相邻并通过内隔板相间隔，吸水口不仅可以吸水，还将地面上的固体垃圾挡在吸水口前端处，使其易于被滚刷扫入吸尘口，结构简单但工作效率高。
本发明所要解决的技术问题是通过如下技术方案实现的：
一种地面清洁机器人，包括污水箱以及设置在机器人底部的洒水部和吸水口，洒水部位于吸水口前部，洒水部用于将清洁液布置到地面，所述吸水口用于回收污水至污水箱，所述机器人底部还设有吸尘口，所述吸尘口位于洒水部和吸水口之间。
吸尘口和吸水口相邻设置。具体的，吸尘口和吸水口可通过内隔板相间隔，内隔板的长度小于吸污通道的总长度，吸尘口和吸水口分别连通吸灰通道和吸水通道，吸灰通道和吸水通道合并为一个通道连通污水箱。内隔板上设有前刮条，前刮条前侧设有滚刷，滚刷与前刮条之间夹设形成所述吸尘口，所述前刮条与设置在吸污通道的后壁面上的后刮条形成所述吸水口。所述前刮条和后刮条倾斜设置，且倾斜方向偏向所述洒水部。较佳的，前刮条和后刮条与地面形成第一角度，所述第一角度为30°-50°， 以使来不及被吸入的固体垃圾尽可能留滞在吸水口前端，从而被吸入吸灰通道。
为了提高吸尘口的真空度，滚刷两端的壳体上分别设有挡尘片，所述挡尘片朝向地面延伸一段距离。
进一步地，所述前刮条和后刮条的材质为橡胶。所述前刮条与内隔板、所述后刮条与吸污通道的后壁面分别一体成型。
为了使喷洒的液体均匀分散在地面，所述洒水部包括喷水口和毛刷条，所述喷水口设置于毛刷条前侧，与设置在壳体内的水箱通过管道相连；或者包括狭长水槽和毛刷条，所述狭长水槽与设置在壳体内的水箱通过管道相连，所述狭长水槽底部设多个通孔，所述毛刷条设置在所述多个通孔中。
所述水箱内装有清水或清洁液体。
综上所述，本发明所提供的地面清洁机器人的吸尘口位于洒水部于吸水口之间，使得吸尘口提前吸取灰尘，如被清洁液打湿后的大颗粒灰尘或毛发等，防止吸水口堵塞。且吸水口设置成与地面成一个斜度，吸水口前端与吸尘口相连但单独设置，吸水口不仅可以吸水，还将地面上的固体垃圾挡在吸水口前端处，使其易于被滚刷扫入吸尘口，结构简单且工作效率高。
下面结合附图和具体实施例，对本发明的技术方案进行详细地说明。
附图说明
图1为本发明实施例一的地面清洁机器人的整体结构示意图；
图2为本发明实施例二的地面清洁机器人的整体结构示意图；
图3为本发明实施例二的地面清洁机器人的洒水部的剖面示意图。
具体实施方式
实施例一
图1为本发明实施例一的地面清洁机器人的整体结构示意图。如图1所示，在本实施例中，提供一种地面清洁机器人。该机器人包括壳体100，壳体100内设有吸污通道200，吸污通道200内设有内隔板210将其分割为吸灰通道201和吸水通道202。所述吸灰通道201一端的入口处设有滚刷300，所述滚刷300两端的壳体上，分别设有挡尘片310，所述挡尘片310朝向地面延伸一段距离。较佳的，挡尘片310自由端与地面相贴合，从而提高吸尘口的真空度。内隔板210上设有前刮条220，滚刷300位于前刮条220的前侧，吸污通道200的后壁面260上设有后刮条230，滚刷300与 前刮条220之间夹设形成吸尘口240，前刮条220和后刮条230之间夹设形成吸水口250。
在真空源(图中未示出)的作用下，灰尘和污水分别沿吸尘口240和吸水口250回收到污水箱(图中未示出)中。前刮条220和后刮条230与地面倾斜设置，且倾斜方向偏向洒水部。具体的，刮条与地面之间形成第一角度α，该第一角度α可设置为30°-50°，优选为45°。
内隔板210的长度小于吸污通道200的总长度，吸灰通道201和吸水通道202在末端合并为一个通道接入污水箱。为了使结构简单并节约能源，地面清洁机器人吸尘和吸水都采用同一真空源即可，当然，也可以根据实际需要选择采用不同的真空源。
滚刷300的前方设有洒水部400，洒水部400包括喷水口410和毛刷条420，喷水口410设置于毛刷条420的前侧，与设置在壳体100内的水箱430通过管道相连。喷水口410将清洁液体喷洒到地面上，毛刷条420使喷洒的液体均匀分散。
前刮条220和后刮条230的材质为橡胶。为了加工方便，前刮条220与内隔板210、后刮条230与吸污通道200的后壁面260可以分别一体成型制作。根据需要，水箱430内可以装有清水或包括洗涤液之类在内的清洁液体。需要说明的是，以上所提到的前、后，都是按照地面清洁机器人在作业过程中，前进或后退的方向为准。图1中A为前方。
如图1所示，本实施例中的地面清洁机器人的工作过程是这样的：
在执行清洗作业的过程中，首先喷水口410喷水，在毛刷条420的作用下将喷洒的液体均匀分散开来，之后在吸尘口240及其前侧的滚刷300的作用下，灰尘被搅起并吸入吸灰通道201，设置在滚刷300后端的吸水口250在吸灰后将污水回收。吸水口250由设置在吸水通道202前后两个壁面上的前刮条220和后刮条230夹设构成，且由于吸水口250朝向洒水部倾斜，能够使来不及被吸入的灰尘尽可能留滞在吸水口250前端，以便被吸入吸灰通道201。由于吸灰和吸水采用同一个真空源，比如电机，吸灰通道201和吸水通道202最终合并成一条通道，水和脏污被一并吸入污水箱中，吸尘口240和吸水口250单独设置可以提高吸收效果。如图1所示，前刮条220和后刮条230几乎并拢在一起，实际上仅留一条缝隙作为吸水口250，这样的结构设置可以确保吸力集中，以便将水吸干净。
由上述内容可知，本发明针对目前市场上现有产品的不足，将吸水口制作成与地面成一个斜度，吸尘口和吸水口相邻并通过内隔板相间隔，该吸水口不仅起到了吸水的作用，而且起到了将固体垃圾扫入吸尘口的作用。机器人在运行过程中，地面上的 固体垃圾被挡在吸水口前端处，固体垃圾容易被滚刷扫入吸尘口内，吸入水箱或尘盒之类的污水箱。
实施例二
图2为本发明实施例二的地面清洁机器人的整体结构示意图，图3为本发明实施例二的地面清洁机器人的洒水部的结构示意图。如图2结合图3所示，在本实施例中提供的地面清洁机器人为智能扫地机器人。与实施例一相比，其工作原理与结构基本相同，不同之处在于洒水部400’。在本实施例中洒水部400’由狭长水槽410’和毛刷条组成，狭长水槽410’与设置在壳体内的水箱通过管道相连，所述狭长水槽410’底部设多个通孔411’，所述毛刷条420’设置在所述多个通孔411’中。在执行清洗作业的过程中，清洁液体通过毛刷条420’涂抹在地面上，其他工作方式与实施例一相同，在此不再赘述。
需要强调的是，上述两个实施例仅对本发明的地面清洁机器人的工作原理进行解释说明，而非用于限定本发明地面清洁机器人的具体实现方式。例如，吸尘口和吸水口也可以完全分离设置，但需确保吸尘口位于洒水部和吸水口之间，从而使得吸尘口可以提前将易阻塞吸水口的大颗粒灰尘或毛发等固体垃圾提前一步清除；例如，吸尘通道和吸灰通道也可以分别单独连通尘盒和污水桶；例如，还可将吸尘口位置处的滚刷去掉，但保留滚刷效果更好。
综上所述，本发明提供一种地面清洁机器人，其吸尘口位于洒水部于吸水口之间，使得吸尘口提前吸取灰尘，如被清洁液打湿后的大颗粒灰尘或毛发等，防止吸水口堵塞。更佳的，吸水口设置成与地面成一个斜度，吸尘口和吸水口相邻并通过内隔板相间隔，吸水口不仅可以吸水，还将地面上的固体垃圾挡在吸水口前端处，使其易于被滚刷扫入吸尘口，结构简单且工作效率高。

Claims (10)

  1. 一种地面清洁机器人，包括污水箱以及设置在机器人底部的洒水部(400、400’)和吸水口(250)，洒水部(400、400’)位于吸水口(250)前部，洒水部(400、400’)用于将清洁液布置到地面，所述吸水口(250)用于回收污水至污水箱，其特征在于，所述机器人底部还设有吸尘口(240)，所述吸尘口(240)位于洒水部(400、400’)和吸水口(250)之间。
  2. 如权利要求1所述的地面清洁机器人，其特征在于，所述吸尘口(240)和吸水口(250)相邻并通过内隔板(210)相间隔。
  3. 如权利要求2所述的地面清洁机器人，其特征在于，所述内隔板(210)的长度小于吸污通道(200)的总长度，所述吸尘口(240)和吸水口(250)分别连通吸灰通道(201)和吸水通道(202)，所述吸灰通道(201)和吸水通道(202)合并为一个通道连通污水箱。
  4. 如权利要求2所述的地面清洁机器人，其特征在于，所述内隔板(210)上设有前刮条(220)，所述前刮条(220)前侧设有滚刷(300)，所述滚刷(300)与前刮条(220)之间夹设形成所述吸尘口(240)，所述前刮条(220)与设置在吸污通道(200)的后壁面(260)上的后刮条(230)夹设形成所述吸水口(250)，所述前刮条(220)和后刮条(230)倾斜设置，且倾斜方向偏向所述洒水部(400、400’)。
  5. 如权利要求4所述的地面清洁机器人，其特征在于，所述前刮条(220)和后刮条(230)与地面形成第一角度，所述第一角度为30°-50°。
  6. 如权利要求5所述的地面清洁机器人，其特征在于，所述滚刷(300)两端的壳体上，分别设有挡尘片(310)，所述挡尘片(310)朝向地面延伸一段距离。
  7. 如权利要求5所述的地面清洁机器人，其特征在于，所述前刮条(220)和后刮条(230)的材质为橡胶。
  8. 如权利要求5所述的地面清洁机器人，其特征在于，所述前刮条(220)与内隔板(210)、所述后刮条(230)与吸污通道(200)的后壁面(260)分别一体成型。
  9. 如权利要求1所述的地面清洁机器人，其特征在于，所述洒水部(400)包括：
    喷水口(410)和毛刷条(420)，所述喷水口(410)设置于毛刷条(420)前侧，与设置在壳体(100)内的水箱(430)通过管道相连；
    或者，所述洒水部(400’)包括：
    狭长水槽(410’)和毛刷条(420’)，所述狭长水槽(410’)与设置在壳体内的水箱通过管道相连，所述狭长水槽(410’)底部设多个通孔(411’)，所述毛刷条(420’)设置在所述多个通孔(411’)中。
  10. 如权利要求9所述的地面清洁机器人，其特征在于，所述水箱(430)内装有清水或清洁液体。
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