CN115067824A - Floor washing assembly and floor washing machine - Google Patents

Abstract

The invention provides a floor washing assembly, which comprises a wet mop cleaning part, a gas-liquid separation structure and a clear water barrel, wherein the wet mop cleaning part is communicated and connected with the gas-liquid separation structure through a first flow passage; and a third flow channel is arranged between the clear water barrel and the wet mop cleaning part, the third flow channel is used for conveying water in the clear water barrel to the wet mop cleaning part for use, and the third flow channel is provided with a water shortage detection sensor which is used for providing a signal whether water exists or not to a control module of the floor washing machine. The water shortage judgment is favorably realized, and the cleaning is favorably realized; still provide a floor cleaning machine, can realize that the water shortage judges betterly, user experiences betterly using, is favorable to clean totally.

Description

Floor washing assembly and floor washing machine

Technical Field

The invention relates to the technical field of cleaning electric appliances, in particular to a floor washing assembly and a floor washing machine.

Background

The working condition of the floor washing machine is generally that the floor is wet and dragged, the air-liquid mixture is sucked, in order to continuously clean, the better solution is to continuously dehumidify and wet the cleaning part by using clean water, so that the wet cleaning part is kept wet on the one hand, and on the other hand, the clean water is provided to absorb dirt to form sewage and is sucked and taken away by a suction source of the floor washing machine.

In order to solve the above problems, the present applicant has conducted studies to develop a floor washing assembly.

Disclosure of Invention

The invention aims to solve the technical problem that the defects of the prior art are overcome, and the ground washing assembly is provided, so that the better water shortage judgment is favorably realized, and the cleaning is favorably realized; still provide a floor cleaning machine, can realize that the water shortage judges betterly, user experiences betterly using, is favorable to clean totally.

Compared with the prior art, the invention provides a floor washing assembly which comprises a wet mop cleaning part, a gas-liquid separation structure and a clear water barrel, wherein the wet mop cleaning part is communicated and connected with the gas-liquid separation structure through a first flow passage; and a third flow channel is arranged between the clear water barrel and the wet mop cleaning part, the third flow channel is used for conveying water in the clear water barrel to the wet mop cleaning part for use, and the third flow channel is provided with a water shortage detection sensor which is used for providing a signal whether water exists or not to a control module of the floor washing machine.

As an improvement, the gas-liquid separation structure comprises a centrifugal separation structure, the centrifugal separation structure comprises a gas inlet and a centrifugal separation cavity, a gas-liquid mixture coming from the gas inlet enters the centrifugal separation cavity, and the centrifugal separation cavity separates gas from liquid by utilizing the rotating centrifugal force of the gas-liquid mixture.

As an improvement, the centrifugal separation cavity is provided with an air outlet pipe, and the air outlet pipe is axially sleeved with the centrifugal separation cavity.

As an improvement, the peripheral wall of the centrifugal separation cavity is provided with a collecting chamber, the collecting chamber is provided with a liquid outlet, and the collecting chamber is used for collecting sewage and discharging the sewage into a sewage bucket through the liquid outlet.

As an improvement, the collecting chamber is provided with a tangential guide surface which is tangentially arranged to the circumferential surface of rotation.

As an improvement, the collecting chamber is provided with a flow baffle plate, the height of the flow baffle plate is higher than the bottom of the collecting chamber, or the collecting chamber is provided with a flow baffle plate in the whirlwind rotating direction, the height of the flow baffle plate is higher than the bottom of the collecting chamber, the centrifugal separation cavity is provided with an air outlet pipe, the air outlet pipe is axially sleeved with the centrifugal separation cavity, and the height of the flow baffle plate is higher than the air inlet of the air outlet pipe.

As an improvement, a baffle wall is arranged at an outlet of the gas-liquid separation structure, a flow guide channel is arranged on the baffle wall, the outlet is communicated with the second flow channel through the flow guide channel, and the flow guide channel is used for prolonging the circulation distance of the airflow.

As an improvement, the third flow channel adopts a water conveying pipe, the water inlet end of the water conveying pipe is connected with the clear water barrel, the water outlet end of the water conveying pipe is connected with the water outlet hole positioned on one side of the wet mop cleaning part, and the water conveying pipe is provided with a water shortage detection sensor which can detect the water in a non-contact manner.

As an improvement, the wet mop cleaning device further comprises a support, and a wet mop cleaning part, a gas-liquid separation structure and a clear water barrel are sequentially arranged from bottom to top along the axial direction of the support.

After adopting the structure, compared with the prior art, the invention has the following advantages: the water shortage detection sensor is arranged in the third flow passage and is not arranged in the clean water barrel, when the clean water barrel supplies water to the wet mop cleaning part, once the position of the water shortage detection sensor of the third flow passage does not allow water to flow, the water shortage detection sensor detects that no water flows and generates a signal, the control module of the floor washing machine judges that the water does not flow and stops the machine according to the set water-free time delay or immediately judges that the water does not flow and stops the machine, the control module of the floor washing machine can be arranged to remind a user by utilizing the signal, the reminding means can be means such as sound and light alarm, and the like, because the third flow passage judges whether water exists or not, on one hand, the judgment on the water condition is more accurate, the water in the clean water barrel can be used as much as possible, namely, by the scheme of the invention, when the water does not exist basically, the water in the clean water barrel does not remain basically, and the detection is more stable, on the other hand, before there is no water completely, the control module of the floor washing machine can be stopped in time according to the water-free signal, so that the wet mop cleaning part stops working, and at the moment, the wet mop cleaning part is not dirty due to the fact that a part of clear water is supplied by the third flow channel, so that the ground cannot be dirty after the wet mop cleaning part is stopped in time, and the cleaning is facilitated.

Compared with the prior art, the invention provides a floor washing machine which comprises a suction source, wherein the suction source is connected with the floor washing assembly, and the second flow passage is communicated and connected with the suction source.

After adopting the structure, compared with the prior art, the invention has the following advantages: can realize that better lack of water judges, can in time remind the user when not having water, user uses and experiences betterly, is favorable to cleanly clean.

Drawings

Fig. 1 is a schematic perspective view of a gas-liquid separation structure.

Fig. 2 is a perspective view of the upper part of the slop pail (shown with a separate cover and float mechanism).

Figure 3 is a perspective view of the lower portion of the slop pail (with the separating hood and float mechanism removed).

Fig. 4 is a perspective view of the peripheral wall with the upper portion of fig. 2 removed.

Fig. 5 is a perspective view of the top view of fig. 4.

Fig. 6 is a perspective view mainly showing a related structure in the centrifugal separation chamber.

Fig. 7 is a second perspective view mainly showing the related structure in the centrifugal separation chamber.

Fig. 8 is a perspective view mainly showing the blocking wall.

Fig. 9 is a perspective view of the inside of the centrifugal separation chamber.

Fig. 10 is a perspective view of a floor washing assembly.

Fig. 11 is a perspective view of fig. 10 with the cover removed.

FIG. 12 is a cross-sectional view of the floor scrubbing assembly.

Fig. 13 is a partially enlarged schematic view of fig. 12 mainly showing a gas-liquid separation structure.

Fig. 14 is a perspective view of the suction source using the main body of the hand-held cleaner.

FIG. 15 is a schematic perspective view mainly showing a structure in which a tangential introduction port is used for cyclone formation.

The reference number indicates that 1-sewage bucket, 1.1-upper part, 1.2-lower part, 2-separation cover, 3-first air inlet pipe, 4-centrifugal separation cavity, 4.1-collection chamber, 4.2-one-way valve, 4.3-tangential guide surface, 5-second air inlet pipe, 6-air inlet end, 7-air outlet end, 8-floating mechanism, 9-top, 10-first flow passage, 11-second flow passage, 12-third flow passage, 13-wet-mop cleaning part, 14-bracket, 15-rear cover, 16-water pump, 17-water shortage detection sensor, 18-plug pipe, 19-button, 20-clamping bulge, 21-electric connection terminal, 22-clear water bucket, 23-air humidity detection sensor, 24-exhaust pipe, 24-air outlet pipe, 25-air outlet, 26-air inlet, 27-handheld cleaner main body, 28-top cover, 29-baffle, 30-flow guide side wall, 31-air outlet pipe, 32-cyclone, 33-flow guide channel, 34-flow baffle, 35-guide structure, 36-tangential inlet and 37-splicing suction port.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

The invention is described in further detail below:

the first embodiment is as follows:

the first embodiment is a floor washing assembly, which comprises a wet mop cleaning part 13 and a support 14, wherein the wet mop cleaning part 13 is connected with the support 14, the wet mop cleaning part 13 is communicated and connected with a gas-liquid separation structure through a first flow passage 10, the gas-liquid separation structure is connected with the support 14, the support 14 is provided with a second flow passage 11, the gas-liquid separation structure is communicated and connected with the second flow passage 11, and the second flow passage 11 is used for being communicated and connected with a suction source.

In this example, as shown in fig. 11, 12 and 13, the wet mop cleaning unit 13 is a roller brush structure, and when cleaning the floor, the roller brush structure drags the floor, and the suction source sucks in dirt through the flow channel, and sucks in the gas-liquid mixture if the floor has water, or when the wet mop cleaning unit 13 is a wet mop cleaning unit 13 and the wet mop cleaning unit 13 is pressed by the scraper, the scraper squeezes out the dirt while dragging the floor, and when the suction source sucks, the gas-liquid mixture is sucked in.

In order to continuously wet the wet mop cleaning part 13, a water injection nozzle is arranged on the circumference of the wet mop cleaning part 13 and connected with a clean water barrel 22 through a third flow channel 12, in this example, the clean water barrel 22 is arranged coaxially with the gas-liquid separation structure and is positioned on the upper side of the gas-liquid separation structure.

The third flow channel 12 is a water delivery hose, the water inlet end of the water delivery hose is connected with the clear water barrel 22, the water outlet end of the water delivery hose is connected with the water outlet hole positioned on one side of the wet mop cleaning part 13, the water delivery hose is provided with a water shortage detection sensor 17 capable of detecting water in a non-contact manner, the water shortage detection sensor 17 detects whether water flows through or not in a capacitance manner, the water pump 16 is positioned at the rear end of the water shortage detection sensor 17, and the wet mop cleaning part 13 and the suction source can be stopped in time or information such as water shortage, water need to be added and water existence is prompted to a user through a signal obtained by detecting the water shortage detection sensor 17.

The water hose, the water pump 16 and the water shortage detection sensor 17 are mainly arranged in the rear cover 15 of the bracket 14, so that the production and the manufacture are convenient on one hand, and the overall appearance of the floor washing assembly is designed on the other hand.

The power for rotating the wet mop cleaning part 13 can be supplied by a self-contained battery or a suction source.

The gas-liquid separation structure and/or the second flow channel 11 is provided with a gas humidity detection sensor 23, and the gas humidity detection sensor 23 is used for providing an air flow humidity signal to a control module of the scrubber.

The gas-liquid separation structure comprises one or more separation units, and in the embodiment, the gas-liquid separation structure comprises two separation units, namely a first separation unit and a second separation unit.

As shown in fig. 1 and 5, the exhaust pipe 24 communicated with the gas outlet 25 of the last stage of separation unit is provided with a gas humidity detection sensor 23, and the gas humidity detection sensor 23 is arranged close to one side of the separation unit, namely close to one side of the gas outlet of the gas-liquid separation structure, so that the gas humidity detection sensor can be found out as early as possible when being arranged close to one side of the separation unit, thereby stopping the suction source in time and being more beneficial to protecting the suction source.

The exhaust duct 24 is mainly used for connection to a suction source, and only the lower end of the exhaust duct 24 is illustrated in fig. 1 to 9 for illustration, and the length of the exhaust duct 24 is designed as necessary, so that the gas humidity detection sensor 23 can be disposed along the exhaust duct 24.

The floor washing assembly is used as a functional assembly of the dust collector and is detachably connected with the dust collector, wherein the bracket 14 is provided with a detachable connecting structure detachably connected with the dust collector, and the detachable connecting structure enables the second flow passage 11 to be detachably communicated with the dust collector.

Removable connection include the grafting pipe 18, button 19, joint arch 20, as shown in fig. 14, to peg graft pipe 18 and handheld vacuum cleaner host 27 grafting suction inlet 37 plug-in connection, when inserting, joint arch 20 can be pushed down by grafting suction inlet 37 internal surface, peg graft pipe 18 can insert smoothly in the grafting suction inlet 37, be equipped with in the grafting suction inlet 37 with the protruding 20 complex sunken of joint, when the grafting of grafting pipe 18 targets in place, then joint arch 20 realizes the locking with sunken cooperation, under the condition of not pressing button 19, peg graft pipe 18 and grafting suction inlet 37 can't the alternate segregation, button 19 is connected with joint arch 20, when pressing button 19, then can drive joint arch 20 withdrawal, thereby realize joint arch 20 and sunken alternate segregation. The structure realizes reliable detachable connection of the floor cleaning assembly and the handheld dust collector main body 27 on one hand, and realizes communication connection between the second flow passage 11 and the suction source on the other hand, so that the handheld dust collector main body 27 is used as the suction source.

In order to realize the power supply and control by the hand-held cleaner main body 27, the ground washing assembly is also provided with an electric connecting terminal 21, when the inserting pipe 18 is inserted and connected with the inserting suction port 37, the electric connecting terminal 21 is electrically connected with the hand-held cleaner main body 27 and a control signal circuit, so that on one hand, the power supply is carried out on the power consumption part of the ground washing assembly, and on the other hand, the power consumption part can be controlled by the hand-held cleaner main body 27, such as the wet mop cleaning part 13, the water pump 16, various sensors and the like.

Example two:

the second embodiment is a floor cleaning machine, and the subassembly that washes the ground can be split with the suction source, and in order to better adapt the dust catcher as the suction source, the gas-liquid separation structure is provided with a plurality of separation units to set up gas humidity and detect sensor 23, thereby realize the purpose of dust catcher as the suction source, such floor cleaning machine can promote better, has solved the problem that needs configuration suction source specially, has reduced the threshold of purchase and use, has important meaning.

In this example, as shown in figure 14, the suction source is a hand-held cleaner main body 27, providing a floor-washing function of the hand-held cleaner.

For the gas-liquid separation structure, good gas-liquid separation structural design not only is favorable to gas-liquid separation, is favorable to validity, the reliability that gas humidity detected the sensor and detects moreover:

as shown in fig. 1, a schematic perspective view of a gas-liquid separation structure is disclosed, which includes a slop pail 1 and two or more separation units, the airflow channels of the separation units are sequentially communicated, and the sewage separated by the separation units is discharged into the slop pail 1.

In this example, adopt the design of a slop pail 1, be equipped with two separating element in this slop pail 1, can realize like this that the separation is effectual, can also control the size of structure better simultaneously, in addition, adopt the design of a slop pail 1, be favorable to the dismouting to clear up, convenience of customers uses. Of course, more than two separate units are possible, and the slop pail 1 may be more than one.

As shown in fig. 13, two separation units, namely a first separation unit and a second separation unit, are arranged in the slop pail 1, the first separation unit adopts a separation cover structure, and the second separation unit adopts a centrifugal separation structure; the first separation unit comprises a separation cover 2 and a first air inlet pipe 3 which are distributed up and down, and the first air inlet pipe 3 is used for inputting a front-stage gas-liquid mixture; in this example, the second separation unit includes a centrifugal separation chamber 4 and a second air inlet pipe 5 which are distributed up and down, an air inlet end 6 of the second air inlet pipe 5 is located above the separation cover 2, an air outlet end 7 of the second air inlet pipe 5 is located in the centrifugal separation chamber 4, other structures are also possible, for example, the second air inlet pipe 5 is eliminated, the second separation unit includes the centrifugal separation chamber 4 and the air inlet end 6 arranged in the centrifugal separation chamber 4, and the centrifugal separation chamber 4 is located above the separation cover 2. By adopting the combination of the first separation unit and the second separation unit, the separation effect can be further optimized, and the size of the structure can be further controlled.

As shown in fig. 2, 3, 4 and 13, the first separating unit and the second separating unit are coaxially disposed, and in this example, specifically, the second separating unit and the first separating unit are vertically disposed in the axial direction of the slop pail 1, the first separating unit is a front stage separating unit, and the second separating unit is a rear stage separating unit. Thus, the separation effect can be further optimized compared to the aforementioned structure, and the size of the structure can be further controlled.

As shown in fig. 2, the separation cover 2 is connected to a floating mechanism 8, the floating mechanism 8 is used for driving the separation cover 2 to move up and down according to the sewage level, the top 9 of the separation cover 2 is used for closing/opening the air inlet end 6 of the second air inlet pipe 5 according to the sewage level, when the sewage reaches a certain height, the top 9 of the separation cover 2 moves up to the position where the air inlet end 6 of the second air inlet pipe 5 is closed, so that the sewage is prevented from being sucked into the second air inlet pipe 5 due to continuous work, and a suction source is sucked, and the height is defined as the height that the sewage is full, and the sewage needs to be poured for use. To guide the movement of the separating hood 2, a guiding structure 35 is also attached to the separating hood 2, which guiding structure 35 is in guiding engagement with the inner surface of the sewage bucket 1. The guide structure 35 and the floating mechanism 8 can adopt various structures, wherein the guide structure 35 is a guide plate, and the floating mechanism 8 is a floater structure.

As shown in fig. 1, 2 and 3, the slop pail 1 includes upper and lower parts, which are detachably connected, respectively an upper part 1.1 and a lower part 1.2, and between the upper and lower parts, separate units are accommodated, so that the user can clean the inside of the slop pail 1 more conveniently. Further, the upper part 1.1 is provided with a rear separating unit, which is connected to the upper part 1.1 and can be removed from the keg 1 together with the upper part 1.1, thus further facilitating the user to clean the interior of the keg 1 and the separating units.

The detachable connection in this case is very convenient by the rotary clamping at the connection end between the upper part 1.1 and the lower part 1.2.

As shown in fig. 1, 2, 3 and 13, the separating hood structure includes an air inlet 26 and a separating hood 2, the gas-liquid mixture from the air inlet 26 enters the slop pail 1 through the air outlet end 7 of the first air inlet pipe 3, and due to the blocking of the separating hood 2, the separating hood 2 changes the direction of the gas-liquid mixture by its blocking effect, in this case, the direction is changed downwards, so that most of the sewage is left in the slop pail 1, and the air flow bypasses the separating hood 2 and continues to go upwards due to the suction of the suction source, thereby realizing a certain gas-liquid separation.

As shown in fig. 4, 5, 6, 7, 8, 9, and 13, the centrifugal separation structure includes a gas inlet 26 and a centrifugal separation chamber 4, in this example, the gas inlet end 6 of the second gas inlet pipe 5 is the gas inlet 26, the gas-liquid mixture from the gas inlet 26 enters the centrifugal separation chamber 4 through the gas outlet end 7 of the second gas inlet pipe 5, the centrifugal separation chamber 4 separates the gas from the liquid by the centrifugal force of the gas-liquid mixture, in this example, in order to form the centrifugal rotation, the centrifugal separation chamber 4 is provided with a cyclone 32 at the gas outlet end 7 of the second gas inlet pipe 5, and the gas-liquid mixture enters the centrifugal separation chamber 4 through the cyclone 32 to form the centrifugal rotation, thereby implementing the centrifugal separation. Other structures can be adopted for forming the cyclone, for example, as shown in fig. 15, the centrifugal separation chamber 4 is provided with a tangential inlet 36, the tangential inlet 36 is communicated with the second air inlet pipe 5, and the gas-liquid mixture from the second air inlet pipe 5 is guided through the tangential inlet 36 to form the cyclone.

As shown in fig. 9 and 13, the peripheral wall of the centrifugal separation chamber 4 is provided with a collection chamber 4.1, the collection chamber 4.1 is provided with a liquid outlet, and the collection chamber 4.1 is used for collecting sewage and discharging the sewage into the sewage bucket 1 through the liquid outlet, so that better separation can be realized and the sewage can be discharged to the sewage bucket 1. Furthermore, as shown in fig. 9, the collecting chamber 4.1 is provided with tangential guide surfaces 4.3 which are arranged tangentially to the circumferential surface of rotation, which enables the cyclone to enter the collecting chamber 4.1 better, resulting in a better separation effect. Furthermore, as shown in fig. 6, 7 and 13, the air outlet pipe 31 is arranged in the centrifugal separation cavity 4, and the air outlet pipe 31 is axially sleeved with the centrifugal separation cavity 4, so that air flow formed by the air outlet pipe 31 flows upwards and downwards from the air outlet pipe 31, the separated sewage is favorably kept in the centrifugal separation cavity 4, and meanwhile, the rotating air flow has enough time to separate and cannot be directly discharged. Furthermore, as shown in fig. 13, the collecting chamber 4.1 is provided with a baffle plate 34, and the height of the baffle plate 34 is higher than the bottom of the collecting chamber 4.1, so that the rotating airflow entering the collecting chamber 4.1 can be blocked to facilitate the separation of the sewage and remain in the collecting chamber 4.1. Furthermore, as shown in fig. 13, the collecting chamber 4.1 is provided with a flow baffle 34, in this example, the flow baffle 34 is arranged at the cyclone outlet of the collecting chamber 4.1, the height of the flow baffle 34 is higher than the bottom of the collecting chamber 4.1, the centrifugal separation chamber 4 is provided with an air outlet pipe 31, the air outlet pipe 31 is axially sleeved with the centrifugal separation chamber 4, and the height of the flow baffle 34 is higher than the air inlet 26 of the air outlet pipe 31, so that the rotating airflow entering the collecting chamber 4.1 can be blocked to a certain extent, which is beneficial to separating the sewage and leaving the sewage in the collecting chamber 4.1, and meanwhile, the separated sewage is not easy to enter the air outlet pipe 31 again, thereby ensuring the separation performance.

The liquid outlet of the collecting chamber 4.1 is provided with a one-way valve 4.2, which is beneficial to preventing the airflow in the sewage barrel 1 from entering the centrifugal separation chamber 4 through the sewage outlet, and on the other hand, the pressure of the centrifugal separation chamber 4 is higher than that of the sewage barrel 1, which is beneficial to discharging the sewage to the sewage barrel 1.

In this example, the basic structure of the centrifugal separation chamber 4 includes a body and a top cover 28, the lower end of the body is connected with the second air inlet pipe 5, and the top cover 28 closes the upper end opening of the body, that is, fig. 6 is connected with the upper body and the second air inlet pipe 5, which is shown in fig. 4.

In this example, the flow guide passage 33 is provided only in the last stage separation unit, but is not limited to this example.

The specific structure of the flow guide channel 33 arranged in the last stage of separation unit is as follows: the top cap 28 upside still is connected with baffle 29, and baffle 29 and top cap 28 are equipped with water conservancy diversion passageway 33, and the lower surface of baffle 29 keeps off the wall promptly, and top cap 28 is equipped with the through-hole as air current channel, and this air current channel's export is for keeping off the wall, keeps off the wall and is equipped with water conservancy diversion passageway 33, export through water conservancy diversion passageway 33 and discharge port intercommunication, the discharge port is connected with blast pipe 24, is equipped with gaseous humidity detection sensor 23 in the blast pipe 24, and gaseous humidity detection sensor 23 is located the rear side of water conservancy diversion passageway 33 promptly, and this water conservancy diversion passageway 33 is used for prolonging the circulation distance of air current, plays certain cushioning effect to the air current, is favorable to preventing sewage entering, and like this, is favorable to protecting the suction source, and in addition, cushioning effect still is favorable to gaseous humidity detection sensor 23 and exerts the performance, realizes more effectual detection. The flow guide channel 33 comprises a flow guide side wall 30, in this case the flow guide side wall 30 divides the flow guide channel 33 into two channels and discharges the air flow through the two air outlets 25.

The electric structures of the water pump 16, the sensors, the wet mop cleaning part 13 and the like adopt conventional structures, and the detailed description is omitted.

In understanding the present invention, the above structure may be understood with reference to other drawings, if necessary, and will not be described herein.

The foregoing is illustrative of the present invention and all such equivalent changes and modifications in the structure, features and principles described herein are intended to be included within the scope of this invention.

Claims (10)

1. A floor washing assembly comprises a wet mop cleaning part, a gas-liquid separation structure and a clear water bucket, and is characterized in that the wet mop cleaning part is communicated and connected with the gas-liquid separation structure through a first flow passage, the gas-liquid separation structure is communicated and connected with a second flow passage, and the second flow passage is used for communicating a suction source of a floor washing machine; and a third flow channel is arranged between the clear water barrel and the wet mop cleaning part, the third flow channel is used for conveying water in the clear water barrel to the wet mop cleaning part for use, and the third flow channel is provided with a water shortage detection sensor which is used for providing a signal whether water exists or not to a control module of the floor washing machine.

2. The floor washing assembly of claim 1, wherein the gas-liquid separation structure comprises a centrifugal separation structure, the centrifugal separation structure comprises a gas inlet and a centrifugal separation chamber, the gas-liquid mixture from the gas inlet enters the centrifugal separation chamber, and the centrifugal separation chamber separates gas from liquid by utilizing the centrifugal force of the rotation of the gas-liquid mixture.

3. The floor washing assembly of claim 2, wherein the centrifugal separation chamber is provided with an outlet pipe, and the outlet pipe is axially sleeved with the centrifugal separation chamber.

4. The floor scrubbing assembly of claim 2, wherein the peripheral wall of the centrifugal separation chamber defines a collection chamber, the collection chamber defining a drain outlet, the collection chamber being configured to collect the contaminated water and drain the contaminated water into the sump through the drain outlet.

5. The floor washing assembly according to claim 4, characterized in that the collection chamber is provided with tangential guide surfaces arranged tangentially to the circumferential surface of rotation.

6. The floor washing assembly according to claim 4, wherein the collection chamber is provided with a baffle plate having a height higher than the bottom of the collection chamber, or the collection chamber is provided with a baffle plate having a height higher than the bottom of the collection chamber in the whirling direction, and the centrifugal separation chamber is provided with an outlet pipe axially sleeved with the centrifugal separation chamber, and the baffle plate has a height higher than the inlet of the outlet pipe.

7. The floor washing assembly according to claim 1 or 2, wherein the outlet of the gas-liquid separation structure is provided with a baffle wall, the baffle wall is provided with a flow guide channel, the outlet is communicated with the second flow channel through the flow guide channel, and the flow guide channel is used for prolonging the flow distance of the gas flow.

8. The floor washing assembly according to claim 1, wherein the third flow channel is a water pipe, a water inlet end of the water pipe is connected with the clean water barrel, a water outlet end of the water pipe is connected with a water outlet hole located on one side of the wet mop cleaning portion, and the water pipe is provided with a water shortage detection sensor which can detect water in a non-contact manner.

9. The floor washing assembly according to claim 1 or 8, further comprising a support, wherein the wet mop cleaning part, the gas-liquid separation structure and the clean water barrel are sequentially arranged along the axial direction of the support from bottom to top.

10. A floor washing machine incorporating a floor washing assembly as claimed in any one of claims 1 to 9 and including a suction source, wherein the suction source is connected to the floor washing assembly and the second flow path is connected in communication with the suction source.

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