JP2019115789A - Floor cleaner - Google Patents

Abstract

To provide a floor cleaner in which sewage recovery capacity of a sewage tank is flexibly adjustable.SOLUTION: The floor cleaner includes: a cleaning column for cleaning the floor surface; a cistern hermetically hung on the surface of the cleaning column; a fresh water tank that stores a clean water source; a fresh water supply device that communicate with the fresh water tank and the cistern and that makes the fresh water in the fresh water tank flow into the cistern; a sewage tank that has a chamber for storing recovered sewage and that has, in the chamber, installation of a sewage inflow port and an extraction port to communicate with the cistern; and an air pump by which an inlet port communicates with the extraction port and by which an outlet port communicates with the surface of the cleaning column or with the cistern.SELECTED DRAWING: Figure 11

Description

  The present application relates to a cleaning device, and more particularly to a water supply structure of a floor cleaner.

  The floor cleaning tools that humans initially used are mainly scissors, mops, floor wipers, and the like that perform cleaning operations manually operated by humans. With the advancement of science and technology, people's demand for floor cleaning tools gradually increases, and at first, energy is supplied by electric power and negative pressure is generated to suction dust, ash dust, etc. on the floor Dust collectors are appearing. However, since the dust collector is limited by its operating principle, new floor cleaners have also emerged because the dust and dirt firmly adhering to the floor can not be cleaned. The new floor cleaner drives the cleaning column (cleaning roll) to wipe the floor by the operation of a motor, and a water supply system is also disposed in the floor cleaner to clean the cleaning column, Completely clean the floor.

  The water supply system cleans the surface of the cleaning column by providing fresh water in a water tank in sealed communication with the surface of the cleaning column. The dirty water after washing is drawn into the dirty water tank by the water supply system and subjected to the appropriate treatment. However, in the conventional structure, the suction of the sewage mainly depends on the power generated by the dust collector, but such power mainly fulfills the dust collection function and the sewage suction is only an additional function, so the sewage It is not possible to flexibly adjust the sewage recovery capacity of the tank.

The present application provides a novel floor cleaner.
The floor cleaner according to the present invention comprises a cleaning column for cleaning the floor, a water tank sealed on the surface of the cleaning column, a fresh water tank for storing a clean water source, the clean water tank and the water tank, A dirty water tank having a fresh water supply device for flowing fresh water in the fresh water tank into the water tank, and a chamber for storing collected waste water, wherein the chamber is provided with a sewage inlet and a bleed port communicating with the water tank; And an air pump whose port communicates with the bleed port of the dirty water tank.

  As a further improvement of the floor cleaner, the exhaust port of the air pump communicates with the surface of the cleaning column or a water tank.

  As a further improvement of the floor cleaner, at least one anti-flying member is installed in the chamber of the dirty water tank, and the at least one anti-flying member divides the chamber of the dirty water tank to form a storage chamber The storage chamber and the bleed port are separated by a water splash preventing member, and the water splash preventing member is provided with a vent for communicating the storage chamber with the bleed port, and the vent is disposed out of alignment with the bleed slot Be done.

  As a further improvement of the floor cleaner, a water splash preventing member is installed in a chamber of the dirty water tank, the water splash preventing member has a first buffer storage chamber, and the first buffer storage chamber is The first vent and the second vent installed at the top and the bottom are opened respectively, and when the water splash preventing member is mounted in the chamber, the chamber is divided to accommodate the second buffer storage chamber and the second buffer storage chamber. A chamber is formed, the storage chamber is in communication with the first buffer storage chamber through the second vent, and the second buffer storage chamber is in communication with the first buffer storage chamber through the first vent. In communication, the bleed port communicates with the second buffer storage chamber, and at least two of the bleed port, the first vent and the second vent are offset from one another.

As a further improvement of the floor cleaner, the mutually offset installation includes the case of being located in different directions and the case of being located in different positions in the same direction.
As a further refinement of the floor cleaner, the second vent is provided laterally along the inlet of the receiving chamber.
As a further improvement of the floor cleaner, the first vent is provided along the longitudinal direction.

As a further improvement of the floor cleaner, the bleed port is installed along the lateral direction.
As a further improvement of the floor cleaner, a liquid level detection device for detecting the level of the liquid surface of the sewage is further installed in the sewage tank.
As a further improvement of the floor cleaner, the fresh water supply device is a water pump whose water inlet communicates with the fresh water tank and whose water outlet communicates with the water tank.

The present application has the following beneficial effects.
The floor cleaner according to the present invention includes a cleaning column, a water tank, a fresh water tank, a fresh water supply device, a dirty water tank and an air pump. The water tank is sealingly placed on the surface of the cleaning column, and the fresh water tank, the fresh water supply device and the water tank communicate with each other, and the fresh water supply device allows the fresh water in the fresh water tank to flow into the water tank. The dirty water tank has a chamber for storing the collected dirty water, the dirty water inlet and the bleed port are opened in the chamber, the dirty water inlet communicates with the water tank, and the air pump inlet communicates with the bleed port of the dirty water tank. In the present application, the independent air pump is used as the power for suctioning the sewage in the sewage tank, and the sewage collection capacity of the sewage tank can be flexibly adjusted according to the actual demand.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a general view of an embodiment of a floor cleaner according to the present application. FIG. 2 is a general view of the embodiment shown in FIG. 1 from another angle; FIG. 2 is an exploded schematic view of the embodiment shown in FIG. 1; It is a cross-sectional schematic of the base part of a floor cleaner. FIG. 1 is a cross-sectional schematic view of a cleaning column assembly of a floor cleaner. It is an enlarged view of A part in FIG. It is the schematic of the combination of the cleaning column and cleaning mechanism of a floor surface vacuum cleaner. It is the schematic of the trash can of floor vacuum cleaner. FIG. 1 is a schematic view of a water basin structure (including a cleaning column assembly) of a floor cleaner. FIG. 1 is a schematic view of a water basin structure (not including a cleaning column assembly) of a floor cleaner. It is the schematic of the water supply mechanism of a floor surface vacuum cleaner. It is a schematic view of a fresh water tank of a floor cleaner. It is the schematic of the sewage tank of a floor cleaner. It is the schematic of the water pump of a floor cleaner. It is the schematic of the air pump of a floor cleaner. It is an outline perspective sectional view of a sewage tank of a floor cleaner. It is a schematic sectional drawing in another cross section of the sewage tank of a floor cleaner. It is a schematic sectional drawing of the water jump prevention member of a floor surface vacuum cleaner. It is a schematic perspective sectional view of a sponge column of a floor cleaner. It is a schematic perspective sectional view of a sponge column of a floor cleaner.

  Hereinafter, the present invention will be described in more detail by combining specific embodiments and the drawings. The present application is not limited to the embodiments described in the present embodiment, and can be realized in various different modes. The following specific embodiments are provided to make the content of the present disclosure more clearly and completely understandable, and terms such as upper, lower, left, right, etc., which indicate the direction, are shown It only refers to the position in the corresponding drawing of the structure being constructed.

However, one skilled in the art should be aware that the description of one or more of the specific details may be omitted and that other methods, assemblies or materials may be used. In some instances, some embodiments have not been described or described in detail.
Also, the technical features and technical solutions described herein may be combined in any appropriate manner in one or more embodiments.

This embodiment provides a floor cleaner.
The floor cleaner includes a case assembly, a cleaning mechanism, a water supply mechanism, a controller, and a connection mechanism.
The case assembly is a support for a floor cleaner and is divided into two parts, a base and a handle. The base and handle are connected by a connection mechanism, such connection being movable in order for the user to successfully grasp the floor cleaner to achieve cleaning at more angles.

  The cleaning mechanism is a main member for cleaning the floor and is generally attached to the base. The water supply mechanism provides a fresh water tank and a dirty water tank, which stores a clean water source, communicates with the cleaning mechanism, sends clean water to the cleaning mechanism by the power member, and cleans the cleaning mechanism. The dirty water tank stores dirty water from the cleaning mechanism in communication with the dirty water tank. Wastewater in the cleaning mechanism is collected in the waste water tank under the action of another power member to avoid flowing out to the outside of the floor cleaner.

The control unit mainly includes a control circuit and a circuit board that supports the control circuit, and the operation of other parts, for example, operation and stop of the cleaning mechanism, start and stop of the water supply mechanism, realization of man-machine interaction, etc. Plays a role in control.
In order to make it easy to understand, in the present embodiment, in the following, the base side will be described as the front side and the handle side as the rear side.

Specifically, referring to FIGS. 1 to 3, the base includes a folding case 110, a base case 120, a side cover 130 and a rear case 140 of the base, and the folding case 110 is disposed above the base case 120. It can be attached and can be rotated open relative to the base case 120. The base rear case 140 is attached to the rear lower side of the base case 120, and the side cover 130 is hooked on both sides of the base case 120.
With further reference to FIGS. 1-3, the handle includes a grip and a body. The grip includes an upper case 170 of the grip and a rear case 180 of the grip, and the main body includes an upper case 150 of the main body and a rear case 160 of the main body. The grip portion is attached to the main body portion, and the main body portion is connected to the base via the connection mechanism 500, whereby the connection between the handle and the base is realized.

Referring to FIGS. 3-6, the cleaning mechanism includes a cleaning column assembly 210, a cleaning mechanism 220 for cleaning debris on the cleaning column, and a trash can 230 for collecting debris on the cleaning column assembly.
The cleaning column assembly 210 is in direct contact with the floor to clean debris on the floor and includes a cleaning column made of a flexible material, and in this embodiment the sponge column 211 is an example of a cleaning column.

The cleaning column assembly 210 further includes a sleeve 213 supporting the sponge column 211 and a cleaning power device 212 driving rotation of the sponge column 211 and the sleeve 213.
The cleaning power device 212 is attached to a side wall in a direction perpendicular to the floor surface of the base case 120 and can be screwed. The sleeve 213 of the sponge column 211 is fitted on the outside of the cleaning power device 212 and can be removed and replaced. The sponge column 211 is fitted to the sleeve 213, the cleaning power device 212 is mounted in the sleeve 213, and the cleaning power device 212 is a motor, and the control unit controls the on / off and rotation direction of the cleaning power device 212. .

Referring to FIG. 4, the trash can 230 is disposed behind and below the sponge column 211, and the dust can be collected by the sponge column 211 and the trash can 230 by being as close as possible to the sponge column 211 on the premise that the sponge column 211 is not affected. Avoid leaking from the gap between
Referring to FIG. 7, the cleaning mechanism 220 includes a rotating body 221 and a plurality of cleaning members 222 installed on the rotating body 221. The rotating body 221 is driven to rotate by a cleaning power device (the cleaning power device is a motor, not shown) and rotates, and rotates in the same direction (clockwise or counterclockwise) as the sponge column 211. The cleaning member 222 is in the form of a strip, for example, a brush or a tooth, and can rotate with the rotating body 221. Further, the cleaning member 222 and the sponge column 211 clean the dust on the sponge column 211 while rotating by having a gap smaller than the volume of the dust or in direct contact with the clearance.

The cleaning mechanism 220 is installed at the upper rear of the sponge column 211, that is, above the trash can 230, and drops the cleaned dust from the sponge column 211 into the trash can 230.
Referring to FIG. 7, in order to clean the dust on the sponge column 211 more efficiently, at least two sets of cleaning members 222 are provided, each set includes a plurality of cleaning members 222, and the rotation of the rotating body 221 The length of the array may be selected to be smaller than, greater than, or equal to the length at the rotation center line of the sponge column 211, which is arranged along the center line.

  Referring also to FIG. 7, the arrangement of cleaning members 222 in each set may be distributed along a straight line, and each set of cleaning members 222 may be arranged in a wave-like manner, but such an arrangement scheme As compared with the linear arrangement, the resistance which the cleaning member 222 applies to the sponge column 211 can be reduced, and the energy consumption can be reduced.

  Further, referring to FIGS. 4 and 8, in the cleaning mechanism, a scraper 240 is installed at the rear of the sponge column 211 in order to improve the cleaning effect of the floor cleaner, and the scraper 240 is made of, for example, rubber. The flexible tip 241 is in close contact with the floor surface to prevent the waste from leaking from under the floor cleaner. Referring to FIGS. 4 and 10, a gap is provided between the scraper 240 and the sponge column 211, and the outer wall facing the sponge column 211 of the scraper 240 is designed in an arc surface corresponding to the sponge column 211. Thereby, the gap serves as a guide slot for guiding dust to enter.

Referring to FIGS. 3, 4, 9 and 11, the water supply mechanism includes a washing chamber, a fresh water tank 310, a fresh water supply device (a water pump 330 in this embodiment), a dirty water tank 320 and a dirty water recovery device The embodiment includes an air pump 340).
The cleaning chamber is disposed on the rotational trajectory of the sponge column 211 and is sealingly combined with the sponge column 211 so that liquid can be contained in the cleaning chamber to clean the sponge column 211.

  In this embodiment, referring to FIGS. 9 and 10, the cleaning chamber according to this embodiment has a water tank structure, and in other embodiments, it may be a chamber of another aspect. The water tank 351 is formed by denting a part of the base case 120 (corresponding to the water tank case), and the structure of the entire floor cleaner can be simplified. However, in other embodiments, the water tank 351 may be formed in a separate water tank case.

  The water tank 351 is flipped over the sponge column 211, and the part of the water tank 351 in contact with the sponge column 211 maintains a seal. In order to achieve sealing, in the exemplary construction of this embodiment, the sealing member 352 and the throttling member 353 are screwed on both sides of the water tank 351, and the sealing member 352 is located behind the throttling member 353, ie sponge The column 211 first moves to the sealing member 352 and then moves to the throttling member 353. The throttling member 353 and the sealing member 352 form a sealing structure for the water tank 351 and the sponge column 211, respectively, and the throttling member 353 also serves to squeeze out the water in the sponge column 211. The sewage squeezed out of the sponge column 211 directly enters the water tank 351 and is sucked by the sewage tank 320.

In order to achieve a higher throttling effect, the throttling member 353 is made of a hard material, and the outer wall of the portion in contact with the surface of the sponge column 211 is arc-shaped, for example a pressure made of hard plastic, metal, etc. It is a bar or a shaft. The sealing member 352 only exerts a sealing effect, and referring to FIG. 11, the portion 3521 of the sealing member 352 in contact with the sponge column 211 is designed as a protrusion made of an elastic material, the elasticity of which is the sponge column It is possible to avoid squeezing the waste water in the water tank out of the water tank 351.
Further, referring to FIGS. 9 and 10, in order to prevent large debris in the sponge column 211 from entering the water supply mechanism and clogging the flow path, both ends are sealed with the throttling member 353 in the water tank 351. A filter mesh 354 that is crimped into the water tank 351 by the member 352 may be installed.

  Referring to FIGS. 3, 11, 12 and 14, the fresh water outlet 311 of the fresh water tank 310 and the fresh water inlet (not shown) of the water tank 351 communicate with the water pump 330. The water inlet 331 communicates with the fresh water outlet 311, the water outlet 332 communicates with the fresh water inlet, and fresh water enters the water tank 351 from the fresh water inlet under the action of the water pump 330 and the water tank after washing the sponge column 211. It flows out from the sewage outlet 1241 of 351.

  Referring to FIGS. 3, 11, 13 and 15, the sewage outlet 1241 and the sewage inlet 3211 of the sewage tank 320 communicate with the air pump 340. Specifically, the air pump 340 communicates with the bleed port 3212 of the dirty water tank 320, and the dirty water outlet 1241 of the water tank 351 communicates with the dirty water inlet 3211 of the dirty water tank 320. The air pump 340 can extract the dirty water tank 320 to generate negative pressure in the dirty water tank 320, and the negative pressure can suck the dirty water from the water tank 351. As an advantage of absorbing the sewage by the air pump 340, the sewage suction capacity of the sewage tank 320 can be easily controlled and can be flexibly adjusted according to the actual demand.

Of course, in other embodiments, the fresh water supply apparatus is not limited to the water pump 330, but may be another drive apparatus, for example, an air pump may be used instead of the water pump 330. The air pump communicates with the water tank 351 and extracts fresh water from the fresh water tank 310 by reducing the pressure in the water tank 351 by bleeding, and the principle is similar to the principle of the sewage tank 320 recovering sewage. doing.
Similarly, the sewage recovery apparatus is not limited to the air pump 340, and may be another drive device, for example, a water pump may be used instead of the air pump 340, and the principle is that the fresh water tank 310 It is similar to the principle of supplying fresh water.

Furthermore, referring to FIG. 3, FIG. 11, FIG. 13 and FIG. 15, since the intake port 341 of the air pump 340 communicates with the sewage tank 320, if the air tank 340 is shaken when the air pump 340 takes air Is easily sucked by the air pump 340.
On the other hand, at least one water splash preventing member is installed in the chamber of the dirty water tank, the at least one water splash preventing member divides the chamber of the dirty water tank to form a containing chamber, and the containing chamber and the bleed air A port is separated by a water splash preventing member, and a vent for communicating the storage chamber with the bleed port is opened in the water splash blocking member, and the air vent is disposed out of position with the bleed port.

  As an improvement to the waste water tank 320 of this embodiment, specifically, the waste water tank 320 is designed to have a storage chamber for containing waste water and at least one water splash preventing member, and the water splash preventing member is a bleed air. The venting hole is opened in the water splash preventing member to separate the port 3212 and the housing chamber, and the bleed hole 3212 of the dirty water tank 320 communicates with the air vent of the water splash preventing member, so that a large amount of splashed water droplets The part is blocked by the water splash preventing member, but does not affect the bleeding of the air pump 340, and the more the number of the water splash preventing members, the higher the water splash preventing effect.

  Specifically, referring to FIG. 16, FIG. 17 and FIG. 18, the dirty water tank 320 includes a chamber in which the dirty water inlet 3211 and the bleed air outlet 3212 are installed, a liquid level detection device 322, and a water splash preventing member 323. Including. The liquid level detection device 322 and the water splash prevention member 323 are both mounted in the chamber, and the liquid level detection device 322 detects the amount of dirty water in the dirty water tank 320, and is connected to the control unit. When the waste water exceeds the maximum value, the switch is triggered to send a signal to the control unit.

  The water splash preventing member 323 has a first buffer storage chamber 3234, and a first vent 3231 and a second vent 3232 respectively installed at the upper and lower sides of the first buffer storage chamber 3234 are opened. The first vent 3231 and the second vent 3232 are installed in different directions, and the first vent 3231 is installed along the vertical direction, but the second vent 3232 is installed in the storage chamber 3235. It is installed along the lateral direction toward the inlet. Such misalignment can prevent the liquid entering from the second vent 3232 from entering the first vent 3231.

When the splash prevention member 323 is mounted in the chamber, the chamber of the dirty water tank 320 is divided to form one second buffer storage chamber 3233 and one storage chamber 3235, and the storage chamber 3235 and the first buffer storage. The chamber 3234 is in communication via the second vent 3232, the second buffer storage chamber 3233 and the first buffer storage chamber 3234 are in communication via the first vent 3231, and the bleed port 3212 is the second. It communicates with the buffer storage chamber 3233. The bleed port 3212 is installed along the lateral direction. Thus, due to the multiple water splash prevention, the air pump 340 draws almost no water.
In the present application, at least two of the bleed port, the first vent and the second vent are positioned out of alignment with one another. The above-mentioned mutually offset installation is located in different directions from each other (for example, one of the bleed port 3212 and the first vent 3231 is installed along the lateral direction, the other along the longitudinal direction In the case where they are placed in different positions in the same direction (for example, they are all placed along the longitudinal direction but in different straight lines), and include other forms of misalignment.

  In addition, the present embodiment is further improved in other respects to the problem of the water pump spouted from the dirty water tank 320 being sucked by the air pump 340, that is, the drainage port 342 of the air pump 340 and the sponge column 211 or the water tank 351. And the liquid absorbed by the air pump 340 can be discharged to the sponge column 211 or the water tank 351.

  The flow channel between the water tank 351, the fresh water tank 310, the water pump 330, the dirty water tank 320 and the air pump 340 may be realized by independent pipelines, and the other parts are simplified to simplify the structure. You may design integrally. Referring to FIGS. 3 and 10, a clean water tank, a waste water tank 124 and a drainage tank 125 are installed on both sides of the base case 120, one end of the waste water tank 124 is the waste water outlet 1241 of the water tank 351, and the other end is dirty water. The sewage transmission port 1242 is connected to the tank 320, one end of the drainage tank 125 is a drainage inlet 1251, and the other end is a drainage outlet 1252 communicating with the water tank 351 or the sponge column 211. The clean water tank is located on the side of the case base 120 opposite to the dirty water tank 124 and includes a connection port communicating with the water pump 330 and a fresh water inlet of the water tank 351. As it is the same, it will not be described here in detail in the drawings. When the side covers 130 on both sides of the base case 120 are put on the base case 120, the fresh water tank, the septic tank 124 and the drainage tank 125 form a totally sealed flow channel to realize communication of the flow channel.

Furthermore, in order to improve the cleaning effect, it is possible to make the sponge column 211 thick, so that when the sponge is washed, the throttling member 353 is used to squeeze out the water in the deeper part of the sponge. It is necessary to apply a large force to the sponge column 211, and once the throttling force is too high, it impedes the rotation of the sponge column 211 and increases the energy input to maintain normal rotation of the sponge column 211 In the end, it causes excessive energy consumption.
Referring to FIGS. 19 and 20, in this embodiment, the sponge column 211 is designed as at least two layers, ie, a water-absorbent sponge layer 2111 located in the outer layer and a non-water-absorbent sponge layer 2112 for the inner layer. Made of absorbent sponge material and does not absorb water. The water absorbing sponge layer 2111 is made of a water absorbing sponge material, and water is mainly absorbed by the water absorbing sponge layer 2111 of the outer layer, so when squeezing water, it is sufficient to squeeze out the water present in the water absorbing sponge layer 2111 of the outer layer, Since the thickness of the outer layer water absorbing sponge is thinner than that of the conventional whole sponge layer, the water can be squeezed without requiring a large squeezing force, and the rotation of the sponge column 211 is not disturbed.

  Furthermore, generally, the sponge column 211 is mounted in the base case 120, and both ends of the conventional cylindrical sponge column are annular surfaces perpendicular to the floor surface, and the two left and right side walls of the base case 120 have a constant thickness. Because of its shape, the sponge column 211 can not extend below the left and right side walls of the base case 120 adjacent to the sponge column 211, so that the base case 120 is adjacent to the sponge column 211. The area under the left and right side walls is the blind zone for cleaning.

Referring to FIGS. 5, 6, 19 and 20, both ends of the sponge column 211 according to the present embodiment are conical surfaces a and b, and the conical surfaces a and b are attached to the base case 120. Can extend down the side of the left and right side walls adjacent to the sponge column 211 towards the floor surface, thereby realizing the cleaning of the blind zone.
The control unit includes a circuit board on which a control circuit is installed, a man-machine interaction unit, and the like, and the control unit is not the focus of the improvement of the present invention, so it is not described in detail here. FIG. 3 shows only the push button as one of the man-machine interaction units.

Although the foregoing has described the invention in further detail in conjunction with specific embodiments, specific implementations of the invention are not limited to these descriptions. Those skilled in the art can make several simple variations or replacements without departing from the concept of the present invention.

Claims (10)

A cleaning column that cleans the floor,
A water tank sealed on the surface of the cleaning column;
Fresh water tank which stores clean water source,
A fresh water supply device which mutually communicates with the fresh water tank and the water tank and allows clean water in the fresh water tank to flow into the water tank;
A waste water tank having a chamber for storing collected waste water, wherein the waste water inlet communicating with the water tank and the extraction port are opened in the chamber;
An air pump whose intake port communicates with the bleed port and whose exhaust port communicates with the surface of the cleaning column or the water tank;
A floor vacuum cleaner characterized by including. At least one water splash preventing member is installed in the chamber, the at least one water splash preventing member divides the chamber to form a storage chamber, and the storage chamber and the bleed port are separated by the water splash prevention member. And
The venting member for communicating the storage chamber and the air extraction port is opened in the water splash preventing member, and the air vent is disposed out of position with the air extraction port. Floor vacuum cleaner. A splash prevention member is installed in the chamber, the splash prevention member has a first buffer storage chamber, and the first buffer storage chamber is provided with first vents installed vertically and the first buffer storage chamber. Two vents are opened,
When the water splash prevention member is mounted in the chamber, the chamber is divided to form a second buffer storage chamber and a storage chamber;
The storage chamber communicates with the first buffer storage chamber through the second vent, and the second buffer storage chamber communicates with the first buffer storage chamber through the first vent. The bleed port is in communication with the second buffer storage chamber,
The floor cleaning apparatus according to claim 1, wherein at least two of the bleed port, the first vent, and the second vent are disposed out of position with respect to each other.   The floor cleaning according to claim 2 or 3, wherein the mutually offset installation includes the case of being located in different directions and the case of being located in different positions in the same direction. Machine.   The floor cleaner according to claim 3, wherein the second vent is disposed laterally along the inlet of the storage chamber.   The floor cleaner according to claim 5, wherein the first vent is installed along a longitudinal direction.   7. The floor cleaner according to claim 6, wherein the bleed port is installed along a lateral direction.   The floor cleaner according to claim 1, further comprising a liquid level detection device for detecting the level of the liquid surface of the sewage in the sewage tank.   The floor cleaner according to claim 1, wherein the fresh water supply device is a water pump whose water inlet is in communication with the fresh water tank and whose water outlet is in communication with the water tank. 10. The clean water tank and the dirty water tank according to any one of claims 1 to 9, wherein the clean water tank and the dirty water tank are accommodated in a handle connected to a base accommodating the cleaning column, and the dirty water tank is disposed below the clean water tank. Floor cleaner described.

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