WO2022148194A1

WO2022148194A1 - Wet cleaning apparatus

Info

Publication number: WO2022148194A1
Application number: PCT/CN2021/135560
Authority: WO
Inventors: 余贾荣
Original assignee: 苏州简单有为科技有限公司
Priority date: 2021-01-09
Filing date: 2021-12-04
Publication date: 2022-07-14

Abstract

A wet cleaning apparatus. A fan mounting apparatus in a housing (1) of the wet cleaning apparatus comprises a fan mounting plate (442), and a first magnetic member (404) is provided on the fan mounting plate (442), wherein the first magnetic member (404) is a permanent magnet or an electromagnet. A fan (4) used to generate an air flow, the fan (4) being provided with a second magnetic member (405), and the second magnetic member (405) being a permanent magnet or an electromagnet. There is a mutually repulsive force between the first magnetic member (404) and the second magnetic member (405) so that the distance between the fan (4) and the fan mounting plate (442) along the gravitational direction of the fan remains within a first preset range. Specifically, a magnetic force generated between the two magnetic members (404, 405) is substantially the same as the gravity of the fan (4). When the two reach a substantially balanced state, the fan (4) may be arranged suspended relative to the fan mounting plate (442), i.e. the fan (4) does not abut against the fan mounting plate (442).

Description

Wet cleaning device

technical field

The present application relates to the technical field of cleaning devices, in particular to a wet cleaning device.

Background technique

Surface cleaning devices include wet cleaning devices and cleaning devices such as vacuum cleaners. The vacuum cleaner generally refers to the direct suction of the dirt on the surface to be cleaned directly into the dust cup. Wet cleaning device generally means that cleaning liquid can be applied to the surface to be cleaned, and then the cleaning liquid and the dirt mixed in the cleaning liquid can be sucked into the sewage tank of the wet cleaning device through the suction generated by the wet cleaning device itself to achieve The purpose of cleaning dirty surfaces.

The surface cleaning device generally uses the fan as the power. When the fan is working, it will generate noise due to vibration, which affects the user experience.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the main purpose of the present invention is to provide a wet cleaning device, which aims to solve the problem that the blower generates relatively large noise due to vibration.

In order to achieve the above purpose, a wet cleaning device proposed by the present invention includes:

a cleaning fluid supply system comprising a clean water tank for storing cleaning fluid and a fluid distributor for supplying cleaning fluid to a surface to be cleaned;

A dirt recovery system, which includes a recovery tank for dirt recovery, a fan and suction ducts for generating airflow;

The casing defines a fan accommodating cavity for accommodating the fan, and a fan installation device for installing the fan is arranged in the fan accommodating cavity, and the fan installation device comprises: a fan installation plate, which is provided with A first magnetic member; a fan for generating airflow, a second magnetic member is provided on the fan, wherein there is a mutual repulsion force between the first magnetic member and the second magnetic member to make the fan The distance between the fan mounting plates relative to the direction of gravity is kept within a first preset range.

Optionally, the fan is connected to an external power source through a cable to obtain power;

Wherein, the casing is further provided with an automatic reel for recovering the cables outside the casing into the casing.

Optionally, the fan includes a fan inner cover, and a first elastic member is provided between the fan inner cover and the fan mounting plate.

Optionally, the first elastic member includes a transverse member extending in the radial direction of the fan and a longitudinal member extending in the axial direction of the fan, the transverse member being used to restrict the fan from moving toward the fan mounting plate, The longitudinal members are used to limit movement of the fan in the radial direction.

Optionally, the outer periphery of the fan is provided with a second elastic member for restricting the fan from moving in a direction perpendicular to the direction of gravity.

Optionally, the first magnetic member and the second magnetic member are arranged on the same side of the fan mounting plate.

Optionally, the first magnetic member is installed on the upper surface of the fan mounting plate, and the second magnetic member is disposed above the first magnetic member along the vertical direction.

Optionally, it further includes a fan housing for accommodating the fan, the fan housing includes a peripheral wall of the fan housing and a top wall of the fan housing, and the fan is substantially vertically disposed in the fan housing relative to a horizontal plane.

Optionally, the first magnetic piece is arranged on a side of the top wall of the fan housing away from the blower; the second magnetic piece is arranged just above the first magnetic piece.

Optionally, a third elastic member is provided at one end of the fan away from the top wall of the fan housing, and the third elastic member is in contact with the structure below the fan.

The fan mounting device provided by the present invention includes a fan mounting plate, and the fan mounting plate is provided with a first magnetic member; wherein, the first magnetic member is a permanent magnet or an electromagnet. For a fan for generating airflow, the fan is provided with a second magnetic member, and the second magnetic member is a permanent magnet or an electromagnet. Mutual repulsive force exists between the first magnetic member and the second magnetic member to keep the distance between the fan relative to the fan mounting plate in the direction of gravity within a first preset range. Specifically, the magnetic force generated between the two magnetic parts is basically the same as the gravity of the fan, and the two are in a basically balanced state, so that the fan can be suspended relative to the fan mounting plate, that is, the fan is not installed against the fan. This can effectively avoid direct contact between the two, thereby reducing the noise caused by the vibration of the fan.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.

1 is a schematic structural diagram of a wet cleaning device according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional structure diagram of the wet cleaning device shown in FIG. 1 along the length direction;

Figure 3 is an exploded view of the wet cleaning device in Figure 1;

4 is a schematic cross-sectional structural diagram of a fan in the wet cleaning device shown in FIG. 1;

FIG. 5 is a schematic structural diagram of the wet cleaning device shown in FIG. 1 after the casing is hidden;

6 is a schematic cross-sectional view of a sewage tank in one embodiment;

7 is a schematic structural diagram of a gas-liquid separation device in an embodiment;

8 is a schematic cross-sectional view of the gas-liquid separation device shown in FIG. 7;

FIG. 9 is a schematic view of the structure after the storage box is taken out from the wet cleaning device;

FIG. 10 is a schematic cross-sectional structure diagram of the wet cleaning device shown in FIG. 1 along the width direction;

11 is a schematic cross-sectional structure diagram of a fan in an embodiment along an angle;

12 is a schematic cross-sectional structure diagram of a fan in an embodiment along another angle;

13 is an exploded view of a fan in one embodiment;

14 is a schematic cross-sectional structure diagram of a fan in an embodiment along an angle;

15 is a schematic cross-sectional structure diagram of a fan in an embodiment along another angle;

16 is an exploded view of a fan in one embodiment;

17 is a schematic cross-sectional view of a sewage tank in one embodiment;

18 is a schematic structural diagram of a gas-liquid separation device in an embodiment;

Figure 19 is a schematic cross-sectional view of the gas-liquid separation device shown in Figure 18;

20 is a schematic cross-sectional structure diagram of a fan in an embodiment;

Figure 21 is an exploded view of the fan shown in Figure 20;

22 is a schematic structural diagram of a surface cleaning device according to an embodiment;

FIG. 23 is a schematic structural diagram of the surface cleaning device shown in FIG. 22 after a part of the casing is hidden;

FIG. 24 is a schematic structural diagram of a wire hole in the surface cleaning device shown in FIG. 22;

25 is a schematic structural diagram of the cord reel disposed in the housing in an embodiment;

FIG. 26 is a schematic structural diagram of the cord reel disposed in the housing in another embodiment;

FIG. 27 is a schematic view of the structure of the cord reel disposed in the housing in yet another embodiment.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that, if there is a directional indication involved in the embodiment of the present invention, the directional indication is only used to explain the relative positional relationship, motion, etc. between the components under a certain posture. If the specific posture changes , the directional indication changes accordingly.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for the purpose of description, and should not be construed as indicating or implying Its relative importance or implicitly indicates the number of technical features indicated. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the meaning of "and/or" in the whole text includes three parallel schemes. Taking "A and/or B" as an example, it includes scheme A, scheme B, or scheme satisfying both of A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present invention.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood through specific situations.

In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present invention.

Referring to FIGS. 1 to 5 , in one embodiment, the wet cleaning device generally includes a housing 1 , which defines an accommodating space for accommodating various components of the wet cleaning device. The casing 1 is provided with a handle 121 and a filter plate 123 for discharging water vapor in the casing. In this embodiment, the casing 1 may include an outer casing 11 and an inner casing 12 , and at least part of the inner casing 12 is disposed inside the outer casing 11 . The wet cleaning device also includes a cleaning fluid supply system. The cleaning fluid supply system includes a clean water tank 2 for storing cleaning fluid and a fluid distributor 9 for supplying cleaning fluid to the surface to be cleaned. The clean water tank 2 is installed in the clean water tank accommodating cavity 111 defined by the housing 1 . The fluid distributor 9 can generally be a water pump. Of course, the fluid distributor 9 can also be other structures that can realize the distribution function, not limited to electric or manual operation. In this embodiment, the fluid distributor 9 is an electromagnetic pump, and the electromagnetic pump is installed in the water pump accommodating cavity 114 defined by the casing 1 . The wet cleaning unit also includes a dirt recovery system. The dirt recovery system includes a sewage tank 3 for recovering dirt, a fan 4 for generating airflow, and a suction duct 5 . The suction duct 5 includes an air inlet 51 and an air outlet 52, the air outlet 52 communicates with the fan inlet 451 of the fan 4, and the air inlet 51 can be connected to an accessory (not shown in the figure), or can be directly used for the surface to be cleaned to clean. The sewage tank 3 is installed in the sewage tank accommodating cavity 112 defined by the housing 1 . The sewage tank 3 is provided between the air inlet 51 and the air outlet 52 of the suction duct 5 . The sewage tank 3 is provided with an intake pipe 32 and an exhaust pipe 33. The gas-liquid mixture enters the sewage tank 3 through the intake pipe 32, and then the gas and liquid are separated, the liquid is collected at the bottom of the sewage tank 3, and the gas is discharged from the exhaust pipe 33. .

The fan 4 is arranged in the fan accommodating cavity 113 to generate air flow along the suction duct 5 . The fan 4 includes a motor 41 and an impeller 42 connected to the motor 41. The outer periphery of the motor 41 is provided with a fan inner cover 43. The fan inner cover 43 includes a fan inner cover peripheral wall 432 and a fan inner cover top wall 431. The outer cover of the impeller 42 is provided with an impeller cover 45. The impeller cover 45 is provided with a fan air inlet 451 and a fan air outlet 452.

Since the inhaled air contains a lot of water vapor, in order to protect the fan 4, a dual-air duct fan 4 is used, that is, the fan 4 includes a main air duct 47 and a fan cooling air duct 48, which are isolated from each other. The main air duct 47 enters from the fan air inlet 451 and is discharged from the fan air outlet 452 . The wind of the fan cooling air duct 48 is used to cool the inside of the motor 41 . The fan cooling air duct 48 includes a fan outer cooling air duct 481 and a fan inner cooling air duct 482. The fan outer cooling air duct 481 is in communication with the outside air, and the fan inner cooling air duct 482 includes a cooling air duct outlet 4821 and a cooling air duct inlet. 4822. In this embodiment, the air outlet 4821 of the cooling air duct is arranged on the peripheral wall 432 of the inner cover of the fan, and the air inlet 4822 of the cooling air duct is arranged on the top wall 431 of the inner cover of the fan. The fan 4 is provided with a cooling impeller 49 for generating a cooling airflow that circulates along the fan cooling air duct 48 .

When the wet cleaning device works, the cleaning liquid is first sprayed on the surface to be cleaned, and then the fan 4 is started to generate a suction air flow, and the suction air flow through the attachment connected to the air inlet 51 will suck the dirty liquid together with the air to the air. In the recovery tank 3 between the air inlet 51 and the air outlet 52 . The sewage tank 3 has a gas-liquid separation device 31, which can separate gas and liquid, most of the liquid is retained in the sewage tank 3, and the gas after gas-liquid separation enters the fan 4 through the fan air inlet 451, and passes through the fan air outlet. 452 to the outside of the wet cleaning unit.

Referring to FIGS. 6-8 , as well as FIGS. 1-5 , the present embodiment discloses a sewage tank 3 for accommodating dirt. The sewage tank 3 includes an air intake pipe 32 , an exhaust pipe 33 and an outlet 321 located in the air intake pipe The gas-liquid separation device 31 at the location. The gas-liquid separation device is used for gas-liquid separation of the fluid flowing out from the outlet 321 of the intake pipe. The outlet 321 of the air intake pipe can be oriented in any direction, as long as the gas-liquid separation device is arranged at the outlet. The gas-liquid separation device includes a main body 311 and a plurality of liquid guiding parts 312 provided on the main body 311 . A plurality of liquid guiding parts 312 are arranged at an interval at the outlet 321 of the air intake pipe. The function of the liquid guiding part 312 is to gather and guide the liquid to flow to the bottom of the sewage tank 3 . The gas outlet 313 is disposed between two adjacent liquid guiding parts 312 . The number of gas outlets 313 is at least one. Wherein, the bottom end of the liquid guiding portion 312 is lower than the top end of the gas outlet 313 in the direction of gravity. Specifically, after the water-air mixture is discharged through the outlet 321 of the air intake pipe, most of the water mist and water droplets meet the liquid guide portion 312 and are decelerated due to their Coanda characteristics, then concentrated together and follow the direction of the airflow and the direction of gravity. Under the influence, it flows downward along the inner wall of the liquid guiding part 312. Since the top of the gas outlet 313 is higher than the bottom end of the liquid guiding part 312, part of the gas can be separated from the liquid from the gas outlet 313 for the first time, so as to realize Gas-liquid separation.

In order to improve the liquid collection capacity of the liquid guide part 312, the liquid guide part 312 includes two collection side walls 3122 arranged at a preset angle and connected, and a liquid flow channel for liquid circulation is defined between the two collection side walls 3122 3121. The liquid flow channel 3121 can collect the liquid more quickly, so that it can quickly leave the liquid guiding part 312 . The collection side wall 3122 includes a long side 3133 and a short side 3134 that are arranged oppositely and extend substantially along the liquid flow direction; wherein, the long side 3133 of two adjacent collection side walls 3122 is connected to the long side 3133, and the two adjacent collection side walls 3133 Short side 3134 of 3122 is connected to short side 3134. With this structure, the gas outlet 313 can be formed between the two liquid guiding parts 312. Specifically, the liquid guide portion 312 extends downward and outward relative to the body 311 , so that the liquid can not only move downward under the action of gravity, but also adhere to the liquid guide portion 312 under the action of the pressure of the gas. The inner wall, accelerating downwards. The long side 3133 and the short side 3134 are close to each other at the body 311 , so that the entire liquid guiding portion 312 is in a parabolic shape. Further, along the liquid flow direction, the cross-sectional area of the liquid flow channel 3121 is gradually reduced, which facilitates the rapid separation of the liquid from the liquid flow channel 3121 .

In a preferred embodiment, the liquid guiding portion 312 is V-shaped, so that the liquid can be gradually converged during the downward running process, and the downward speed of the water flow can be accelerated. The guide portion 312 is matched with each other.

When the outlet 321 of the air intake pipe faces to the side, the body 311 may be a part of the air intake pipe 32 , and the plurality of liquid guiding parts 312 are provided on the air intake pipe 32 . The body 311 can also be installed together with a plurality of liquid guiding parts 312 or both are integrally formed, and then installed at the outlet 321 of the air intake pipe.

When the outlet 321 of the intake pipe faces upward, the body 311 defines an inverted cavity 3111 with the outlet 321 of the intake pipe facing upward, and the gas-liquid separation device is installed above the outlet 321 of the intake pipe in the vertical direction. The inverted cavity 3111 is located above the outlet 321 of the air intake pipe. It can be understood that the body 311 is in the shape of an inverted bowl, which is buckled above the outlet, and the plurality of liquid guides 312 are at least partially spaced in the inverted cavity. 3111 around the opening. The function of the inverted cavity 3111 is to first collect the fluid from the outlet. After most of the water mist and water droplets hit the inner wall of the inverted cavity 3111, they are decelerated and concentrated together and follow the direction of the airflow. And under the influence of gravity, it flows downward along the inner wall of the liquid guide part 312, and the liquid automatically collects in the liquid flow channel 3121 defined by the liquid guide part 312 under the influence of the wind pressure from the inside to the outside of the air flow, and follows the liquid flow channel. The path planned by 3121 accelerates the flow downward until it leaves several liquid backflow parts of the gas-liquid separation device and falls into the bottom of the sewage tank 3 . Affected by the negative pressure, part of the gas flows out of the body 311 from top to bottom under the constraint of the body 311 and flows out from the body 311 at the inverted V-shaped gas outlet 313 formed between the several liquid guide parts 312; The liquid guiding part 312 flows in the same direction as the liquid to accelerate the downward speed of the water flow, ensuring that it quickly leaves the collecting part of the water collecting device in this process and reaches the bottom of the sewage tank 3. Then, the gas separated from the liquid is in the negative direction. Under the action of pressure, it ascends to the upper side of the sewage tank 3 and is discharged from the sewage tank 3 through the exhaust pipe 33 .

In one embodiment, the plurality of liquid guiding parts 312 may be arranged at uniform intervals along the outlet 321 of the air intake pipe, that is, around the outlet 321 of the air intake pipe. In other embodiments, the plurality of liquid guiding parts 312 also surround the outlet of the air inlet at intervals, but only partially surround the outlet 321 of the air inlet pipe, and do not need to go around the outlet once.

In a further embodiment, the top end of the gas outlet 313 is lower than the bottom end of the outlet 321 of the air inlet pipe, and the pressure of the gas can be used to quickly attach the liquid to the body 311 and/or the inner wall of the liquid guide, effectively accumulating the liquid After reaching the liquid guiding part 312, gas-liquid separation is performed,

The present invention also provides a surface cleaning device, including a dirt recovery system. The dirt recovery system includes a sewage tank 3 for recovering dirt, a fan 4 for generating airflow, and a suction duct in any of the above embodiments 5.

Referring to FIGS. 9 and 10, as well as FIGS. 1-5, in a further embodiment, in order to improve the cleaning efficiency, the user generally adds some washing liquid into the water purification tank 2, and the cleaning liquid with washing liquid Spraying on the surface to be cleaned can effectively remove the dirt on the surface to be cleaned. In this embodiment, the fan 4 is a wet and dry motor 41, which includes a main air duct 47 and a fan cooling air duct 48. The main air duct 47 is mainly used to generate suction, and the main function of the fan cooling air duct 48 is to The motor 41 part of the fan 4 is cooled. The fan cooling air duct 48 includes a fan outer cooling air duct 481 and the fan outer cooling air duct 481 is at least partially defined by the housing 1 . Fan 4 is used to generate airflow. The interior of the fan 4 defines a cooling air passage 482 in the fan. The cooling air passage 481 outside the fan and the cooling air passage 482 in the fan are in fluid communication to form a cooling passage for the fan 4 to cool the fan 4 . The storage box accommodating cavity 122 defined by the housing 1 of the wet cleaning apparatus is used for accommodating the storage box 124 . The storage box 124 is used to store detergents such as washing liquid, and the user can directly take out the detergent from the storage box 124 and put it into the water purification tank 2 when the device is in use. This setting can be more user-friendly. Further, the fan outer cooling air duct 481 and the storage box accommodating cavity 122 have overlapping parts, that is, the fan outer cooling air duct 481 and the storage box accommodating cavity 122 at least partially overlap, so that the storage box can be effectively reduced. The volume occupied by the cavity 122 reduces the volume of the entire device.

Further, the cooling air duct 481 outside the fan includes a cooling air duct 4811 in front of the fan and a cooling air duct 4812 after the fan. The cooling air duct 4811 in front of the fan refers to the passage through which the airflow enters the casing 1 from the outside of the casing 1 and reaches the front of the fan 4 . The cooling air duct 4812 after the fan refers to the passage between the cooling air after the cooling air is discharged from the fan 4 to the outside of the casing 1 . The cooling air duct 4811 in front of the fan, the cooling air duct 482 in the fan, and the cooling air duct 4812 after the fan are connected in sequence to form a complete cooling air duct 48 for the fan. The storage box 124 at least partially overlaps with the cooling air duct 4811 in front of the fan. Further, the storage box 124 may be completely disposed in the cooling air duct 4811 in front of the fan. In this way, the two share a space, which effectively reduces the cost of the device while reducing the volume.

The casing 1 is provided with a fan accommodating cavity 113 for accommodating the fan 4 , and at least part of the cooling air duct 4811 in front of the fan is disposed above the fan accommodating cavity 113 . The storage box 124 is disposed above the fan accommodation cavity 113 . The advantage of this arrangement is to make the storage box 124 as close to the top of the device as possible, so as to facilitate the user to pick and place. Further, the storage box 124 may be placed between the fan housing cavity 113 and the handle 121 . Since the storage box accommodating cavity 122 is disposed above the fan 4 or upstream of the cooling air duct 482 in the fan, water may enter the interior of the motor 41 . Therefore, the storage box accommodating cavity overlapping with the cooling air duct 4811 in front of the fan 122 includes an air inlet 125 of the accommodating cavity and an air outlet 126 of the accommodating cavity (that is, the air inlet and air outlet of the cooling air duct in front of the fan), and the position of the air outlet 126 of the accommodating cavity in the vertical direction is higher than that of the storage box The bottom wall 127 of the accommodating cavity is accommodated. This can effectively prevent water droplets from entering the motor 41 through the cooling air duct 481 outside the fan.

Further, in order to prevent the liquid on the peripheral wall of the storage box 124 from entering the interior of the motor 41 through the cooling air duct 481 outside the fan. At least part of the accommodating cavity air inlet 125 is disposed below the accommodating box 124, so that the liquid flows from the accommodating cavity air inlet 125 to the outer wall of the housing. At least part of the air inlet 125 of the accommodating cavity is formed by inwardly concave housing 1 . The air inlet 125 of the accommodating cavity can be configured so that fingers can be inserted in, and the user can take out the storage box 124 through the air inlet 125 of the accommodating cavity, which is more convenient to use.

In one embodiment, after the storage box 124 is completely received into the storage box accommodating cavity, the outer wall of the storage box 124 and the outer wall of the housing 1 are substantially in the same plane, and the space between the outer wall of the storage box 124 and the outer wall of the housing 1 is substantially in the same plane. form a seal. It can effectively prevent liquid from entering the cooling air duct 481 outside the fan from the gap between the two.

An air flow channel is formed between the bottom wall 128 of the storage box and the bottom wall 127 of the accommodation cavity of the storage box, which communicates with the air inlet 125 of the accommodation cavity and the air outlet 126 of the accommodation cavity. The bottom wall 128 of the storage box is recessed inward to form a groove, and an airflow channel connecting the air inlet 125 of the receiving chamber and the air outlet 126 of the receiving chamber is formed between the groove and the bottom wall 127 of the receiving chamber of the receiving box. Alternatively, the accommodating cavity 122 of the storage box forms a groove, and a channel is formed between the accommodating cavity 122 and the bottom wall 128 of the storage box. In a specific embodiment, the storage box 124 can be taken out or installed along the airflow direction in the storage box accommodating cavity 122 . The flow direction of the airflow is the width direction of the device, which can further effectively save space.

Referring to FIGS. 11-13 , and also referring to FIGS. 1-5 , in one embodiment, a noise reduction device for a fan is disclosed, and the noise reduction device in this embodiment can be used for the wet The cleaning device can also be used for non-wet surface cleaning devices such as vacuum cleaners (hand-held, horizontal and vertical, etc., which are not limited here). The fan includes an impeller 42 and an impeller cover 45 surrounding the impeller 42 . The impeller cover 45 is provided with at least one fan outlet 452 . In this embodiment, the impeller cover 45 is provided with a plurality of fan air outlets 452 , and the plurality of fan air outlets 452 are arranged at intervals along the rotation axis of the impeller 42 to make the air discharge uniform. The noise reduction device includes an impeller cover 46 , the impeller cover 46 covers the outer side of the impeller cover 45 , and the impeller cover 46 is provided with at least one first ventilation hole 462 for discharging the gas discharged from the fan outlet 452 out of the impeller cover 46 . In this embodiment, the impeller cover 46 is bowl-shaped, and its opposite ends along the rotational axis direction of the impeller 42 are sealed with the two ends corresponding to the impeller cover 45 through seals to ensure that the air discharged from the fan outlet 452 is sealed. All are discharged from the first vent hole 462 . Of course, in other embodiments, the two may not be completely sealed, leaving a certain gap. The horizontal distance of the first ventilation hole 462 relative to the rotation axis of the impeller 42 is smaller than the horizontal distance of the fan outlet 452 relative to the rotation axis of the impeller 42 . The fan outlet 452 is generally arranged on the outermost side of the impeller cover 45, and the first ventilation hole 462 is relatively arranged on the inner side of the fan outlet 452, so that the airflow will converge inward after being discharged from the fan outlet 452. Under the premise of not increasing the radial size of the fan, the flow path of the airflow is changed to reduce noise.

The impeller housing 46 is provided with a plurality of first ventilation holes 462 , and the plurality of first ventilation holes 462 are arranged at intervals along the circumference of the fan air inlet of the fan. In this embodiment, each ventilation hole is defined by the adjacent ribs 463, and is configured as a long and narrow channel, so that the airflow can be directed to the outside of the impeller housing 46, and the noise generated by the airflow can be further reduced. Further, the plurality of first ventilation holes 462 are radially arranged around the air inlet of the fan. The first ventilation hole can also be separated into two layers, an inner and outer layer, to further play a noise reduction effect.

In order to further reduce the noise, the noise reduction device further includes a ventilation member 7 disposed downstream of the impeller housing 46 . The ventilation member 7 is provided with at least one second ventilation hole 71 , wherein the second ventilation hole 71 is horizontal relative to the rotation axis of the impeller 42 . The distance is greater than the horizontal distance of the first vent hole 462 with respect to the rotational axis of the impeller 42 . In this way, the flow path of the airflow can also be increased, and the second-level noise reduction can be added on the basis of the above-mentioned first-level noise reduction to further reduce the noise. Further, the ventilation member 7 is provided with a plurality of second ventilation holes 71, and the plurality of second ventilation holes 71 are arranged at intervals along the circumference of the fan air inlet of the fan.

Further, the noise reduction device further includes a filter plate 123 disposed downstream of the ventilation member 7, the filter plate 123 is provided with at least one third ventilation hole 1231, wherein the horizontal distance of the third ventilation hole 1231 relative to the rotation axis of the impeller 42 is greater than The horizontal distance of the second ventilation hole 71 with respect to the rotation axis of the impeller 42 . The three-stage noise reduction structure is adopted to further increase the flow path of the airflow and reduce the noise.

In this embodiment, the fan can be placed vertically in the device, the impeller 42 faces downward, and the impeller cover 46 is located directly above the ventilation member 7 . The impeller housing 46 is in the shape of a bowl, and includes a housing air inlet channel penetrating through the bottom wall of the bowl and a plurality of first ventilation holes 462 arranged at intervals in the housing air inlet channel.

This embodiment also discloses a surface cleaning device, including a suction duct, a fan for generating airflow along the suction duct, and the noise reduction device for the fan described in any of the above embodiments. Further, the ventilation member 7 is provided with an opening 72, and the opening 72 is arranged in the middle position and penetrates the ventilation member 7. A plurality of first ventilation holes 462 are arranged around the opening 72 and are arranged at intervals. The opening 72 forms the air outlet 52 of the suction duct 5 , wherein the opening 72 is arranged substantially coaxially with the axis of rotation of the impeller 42 . The casing air inlet channel 461 of the impeller casing 46 is in fluid communication with the opening 72 of the ventilation member 7 through the flexible pipe 6 . The other end of the air inlet passage 461 of the housing is in fluid communication with the air inlet 451 of the fan, and the arrangement of the flexible pipe 6 can effectively reduce the noise generated by the vibration of the fan.

Referring to FIGS. 14-16 , and also referring to FIGS. 1-5 , in one embodiment, a surface cleaning device is disclosed. The surface cleaning device in this embodiment is not limited to the wet cleaning device in the above embodiment, and can also Includes cleaning devices such as vacuum cleaners. Specifically, the surface cleaning device comprises a suction duct 5 arranged at least partially within the housing 1 of the surface cleaning device, the suction duct 5 comprising an air inlet 51 and an air outlet 52 located within the housing 1 . The fan 4 arranged in the housing 1 is used to generate the airflow flowing along the suction duct 5 . Wherein, the fan air inlet 451 and the air outlet 52 of the fan 4 are in fluid communication through the flexible pipe 6 . The flexible pipe 6 is arranged between the air inlet 451 and the air outlet 52 of the fan, which can effectively reduce the noise generated by the vibration of the fan 4 . In this embodiment, the flexible pipe 6 is a corrugated hose. In other embodiments, the flexible pipe 6 can also be a pipeline formed of a flexible material, and is not limited to a corrugated hose.

In one embodiment, a fan mounting plate 442 is provided in the housing 1 , and the fan 4 is connected to the fan mounting plate 442 through the first elastic member 401 . The first elastic member 401 can effectively reduce the noise generated between the fan 4 and the fan mounting plate 442 due to vibration. Further, the first elastic member 401 is provided, which can cooperate with the flexible pipe 6 to further reduce the noise generated by the vibration of the fan 4 . In this embodiment, one end of the fan 4 away from the fan air inlet 451 along the axial direction of the fan 4 is fixed to the fan mounting plate 442 through the first elastic member 401 . That is, the flexible pipe 6 and the first elastic member 401 are respectively disposed at both ends of the fan 4 in the axial direction, so as to limit the fan 4 to move (ie, vibrate) within an allowable range in the axial direction, and play a role in reducing noise.

In another embodiment, the housing 1 is provided with a fan housing 44 . The fan housing 44 includes a cylindrical fan housing peripheral wall 441 and a fan housing top wall 442 defining an accommodating space together with the fan housing peripheral wall 441 . The end of the fan 4 away from the air inlet along the axial direction of the fan 4 is fixed to the fan housing top wall 442 (fan mounting plate) of the fan housing 44 through the first elastic member 401 . Disposing the fan 4 in the fan housing 44 can further reduce the noise generated by the fan 4 .

Further, at least one second elastic member 402 is disposed between the outer periphery of the fan 4 and the fan housing 44 . A second elastic member 402 is provided between the outer periphery of the fan 4 and the peripheral wall 441 of the fan housing. The second elastic members 402 may be multiple and are arranged on the outer periphery of the fan 4 at intervals. The second elastic member 402 can also be an annular part, which is sleeved with the outer circumference of the fan 4. The function of the second elastic member 402 is to make the fan 4 move in a small range in the radial direction, and cooperate with the first elastic member 401 and the flexible pipe 6 to play the role of shock absorption and noise reduction. The second elastic member 402 is annularly surrounding the outer circumference of the fan 4 , and the outer circumference of the second elastic member 402 is in conflict with the inner circumference of the fan housing 44 . In a preferred embodiment, the two ends of the axial direction of the fan are respectively provided with second elastic members 402 which are in contact with the outer casing of the fan, and play the role of sealing and shock absorption at the same time.

In one embodiment, the fan 4 is vertically disposed in the casing 1, and the fan air inlet 451 and the air outlet 52 of the fan 4 are disposed opposite to each other in the vertical direction. In this way, the top end of the fan 4 is mounted on the fan mounting plate 442 through the first elastic member 401, and the bottom end is kept connected with the casing 1 through the flexible pipe 6, which further has the effect of shock absorption and noise reduction. Further, the flexible pipe 6 is expandable and contracted along the flow direction of the airflow in the pipe, and the expanding and contracting direction is basically the same as the vibration direction.

In order to further improve the noise reduction effect, the surface cleaning device also includes an impeller cover 46 that is covered on the outside of the impeller cover of the fan 4 . There is fluid communication with the air outlet 52 through the flexible tube 6 .

The impeller housing 46 includes first ventilation holes 462 arranged at intervals on the outer periphery of the housing air inlet passage 461 . The first ventilation hole 462 has the effect of reducing noise in order to collect the gas discharged from the fan outlet 452 and lead it out of the impeller housing 46 .

Referring to FIGS. 17-19 , as well as FIGS. 1-5 , the present embodiment discloses a sewage tank 3 for accommodating dirt. The sewage tank 3 includes an air intake pipe 32 , an exhaust pipe 33 and an outlet 321 located in the air intake pipe The gas-liquid separation device 31 at the location. The gas-liquid separation device is used for gas-liquid separation of the fluid flowing out from the outlet 321 of the intake pipe. The outlet 321 of the air intake pipe can be oriented in any direction, as long as the gas-liquid separation device is arranged at the outlet. The gas-liquid separation device includes a main body 311 and a plurality of liquid guiding parts 312 provided on the main body 311 . A plurality of liquid guiding parts 312 are arranged at an interval at the outlet 321 of the air intake pipe. The function of the liquid guiding part 312 is to gather and guide the liquid to flow to the bottom of the sewage tank 3 . The gas outlet 313 is provided between two adjacent liquid guiding parts 312. The number of gas outlets 313 is at least one. Wherein, the bottom end of the liquid guiding portion 312 is lower than the top end of the gas outlet 313 in the direction of gravity. Specifically, after the water-air mixture is discharged through the outlet 321 of the air intake pipe, most of the water mist and water droplets meet the liquid guide portion 312 and are decelerated due to their Coanda characteristics, then concentrated together and follow the direction of the airflow and the direction of gravity. Under the influence, it flows downward along the inner wall of the liquid guiding part 312. Since the top of the gas outlet 313 is higher than the bottom end of the liquid guiding part 312, part of the gas can be separated from the liquid from the gas outlet 313 for the first time, so as to realize Gas-liquid separation.

In order to improve the liquid collection capacity of the liquid guide part 312, the liquid guide part 312 includes two collection side walls 3122 arranged at a preset angle and connected, and a liquid flow channel for liquid circulation is defined between the two collection side walls 3122 3121. The liquid flow channel 3121 can collect the liquid more quickly, so that it can quickly leave the liquid guiding part 312 . The collection side wall 3122 includes a long side 3133 and a short side 3134 that are arranged oppositely and extend substantially along the liquid flow direction; wherein, the long side 3133 of two adjacent collection side walls 3122 is connected to the long side 3133, and the two adjacent collection side walls 3133 Short side 3134 of 3122 is connected to short side 3134. With this structure, the gas outlet 313 can be formed between the two liquid guiding parts 312 . Specifically, the liquid guide portion 312 extends downward and outward relative to the body 311 , so that the liquid can not only move downward under the action of gravity, but also adhere to the liquid guide portion 312 under the action of the pressure of the gas. The inner wall, accelerating downwards. The long side 3133 and the short side 3134 are close to each other at the body 311 , so that the entire liquid guiding portion 312 is in a parabolic shape. Further, along the liquid flow direction, the cross-sectional area of the liquid flow channel 3121 is gradually reduced, which facilitates the rapid separation of the liquid from the liquid flow channel 3121 .

When the outlet 321 of the intake pipe faces upwards, the body 311 defines an inverted cavity 3111 with an opening facing the outlet 321 of the intake pipe, and the gas-liquid separation device is covered above the outlet 321 of the intake pipe along the vertical direction. The inverted cavity 3111 is located above the outlet 321 of the air intake pipe. It can be understood that the body 311 is in the shape of an inverted bowl, which is buckled above the outlet, and the plurality of liquid guides 312 are at least partially spaced in the inverted cavity. 3111 around the opening. The function of the inverted cavity 3111 is to first collect the fluid from the outlet. After most of the water mist and water droplets hit the inner wall of the inverted cavity 3111, they are decelerated and concentrated together and follow the direction of the airflow. And under the influence of gravity, it flows downward along the inner wall of the liquid guide part 312, and the liquid automatically collects in the liquid flow channel 3121 defined by the liquid guide part 312 under the influence of the wind pressure from the inside to the outside of the air flow, and follows the liquid flow channel. The path planned by 3121 accelerates the flow downward until it leaves several liquid backflow parts of the gas-liquid separation device and falls into the bottom of the sewage tank 3 . Affected by the negative pressure, part of the gas flows out of the body 311 from top to bottom under the constraint of the body 311 and flows out from the body 311 at the inverted V-shaped gas outlet 313 formed between the several liquid guide parts 312; The liquid guiding part 312 flows in the same direction as the liquid to accelerate the downward speed of the water flow, ensuring that it quickly leaves the collecting part of the water collecting device in this process and reaches the bottom of the sewage tank 3. Then, the gas separated from the liquid is in the negative direction. Under the action of pressure, it ascends to the upper side of the sewage tank 3 and is discharged from the sewage tank 3 through the exhaust pipe 33 .

Referring to FIGS. 20-21 , and also referring to FIGS. 1-5 , this embodiment discloses a fan installation device, which is not limited to the wet cleaning device described in the above embodiment, and can also be applied to vacuum cleaners or other needs Install the fan 4 among the equipment. The fan mounting device includes a fan mounting plate 442, and the fan mounting plate 442 is provided with a first magnetic member 404; wherein, the first magnetic member 404 is a permanent magnet or an electromagnet. For the fan 4 for generating airflow, the fan 4 is provided with a second magnetic member 405, and the second magnetic member 405 is a permanent magnet or an electromagnet. A mutual repulsive force exists between the first magnetic member 404 and the second magnetic member 405 to keep the distance between the fan 4 relative to the fan mounting plate 442 in the direction of gravity within a first preset range. The direction of gravity here refers to the vertical direction in which the gravity is located, not specifically the direction toward the ground, but also the direction away from the ground. Specifically, the two magnetic members are basically arranged opposite to each other, and can only move relative to each other in the direction of gravity, but cannot basically move in the direction perpendicular to the direction of gravity. There is a repulsive force along the direction of gravity between the two, which is basically the same as the gravity of the fan 4, and the two reach a basic equilibrium state, so that the fan 4 can be set in the air relative to the fan mounting plate 442, that is, the fan 4 does not abut on the fan mounting plate 442 , which can effectively avoid contact between the two, thereby reducing the noise generated by the vibration of the fan 4 . The first preset range here is not limited in detail, it is only necessary to ensure that the fan 4 does not directly contact the mounting plate.

Further, in order to stably install the motor on the fan mounting plate 442 , an elastic member may be arranged between the fan 4 and the fan mounting plate 442 . Specifically, the fan 4 includes a fan inner cover, and a first elastic member 401 is provided between the fan inner cover and the fan mounting plate 442 . The first elastic member 401 is sandwiched between the fan mounting plate 442 and the fan inner cover, so that the mutual repulsive force between the first magnetic member 404 and the second magnetic member 405 is greater than the total gravity of the fan 4, under the action of the repulsive force , the fan 4 presses the first elastic member 401, and the first elastic member 401 abuts against the fan mounting plate 442, so that the fan 4, the first elastic member 401 and the fan mounting plate 442 do not need to be hard-connected (that is, tightened by bolts etc. Firmware to connect), reduce the noise caused by the vibration of the fan 4.

In one embodiment, the first magnetic member 404 and the second magnetic member 405 are disposed on the same side of the fan mounting plate 442 . In this way, it can be ensured that there is no obstruction between the two magnetic parts, so as to ensure that the repulsive force between them is maximized. In a preferred embodiment, the first magnetic member 404 is installed on the upper surface of the fan mounting plate 442 , and the second magnetic member 405 is disposed above the first magnetic member 404 along the vertical direction. The fan 4 is arranged below the fan mounting plate 442, and the second magnetic member 405 is fixedly connected to the fan 4 through the connecting member 406. At this time, the first magnetic member 404 is equivalent to being fixed on the fan mounting plate 442. There is a repulsive force between the first magnetic members 404, and the second magnetic member 405 is located above the first magnetic member 404. The second magnetic member 405 is subjected to an upward repulsive force to be suspended relative to the first magnetic member 404, so that the fan 4 is relatively opposite to the first magnetic member 404. It is suspended from the fan mounting plate 442 . In a further embodiment, a first elastic member 401 is provided between the fan mounting plate 442 and the fan 4 , so that the requirements for the repulsion force between the two magnetic members do not need to be very precise, and it is only necessary to ensure that the repulsion force is greater than the fan 4 The gravity is sufficient to ensure that the fan 4 is subjected to a force toward the fan mounting plate 442 as a whole.

In another embodiment (not shown in the figure), the fan mounting plate 442 includes an upper mounting plate of the fan 4 and a lower mounting plate of the fan 4, the lower mounting plate of the fan 4 can be located below the fan 4, and the two magnetic parts are located on the fan 4 Above the mounting plate 442 and below the fan 4 , the magnetic force between the two magnetic members pushes the fan 4 away from the fan mounting plate 442 . Preferably, a mounting plate on the fan 4 can be provided above the fan 4 , an elastic member is arranged between the mounting plate on the fan 4 and the fan 4 , and the fan 4 presses the elastic member against the mounting plate on the fan 4 under the action of repulsion. The fan can be arranged vertically between the two mounting plates, and can also be arranged horizontally between the two mounting plates.

Further, in one embodiment, the first elastic member 401 includes a transverse member 4011 extending in the radial direction of the fan 4 and a longitudinal member 4012 extending in the axial direction of the fan 4, and the transverse member 4011 is used to restrict the fan 4 toward the fan The mounting plate 442 moves and the longitudinal member 4012 serves to limit the movement of the fan 4 in the radial direction. The restriction here is not a complete restriction, which cannot be moved at all, but restricts the movement of the fan 4 within a certain range, so as to realize the function of shock absorption and noise reduction. Specifically, the longitudinal member 4012 is sleeved on the outer circumference of the fan 4 , and the outer circumference here can be the outer circumference of the fan inner cover or the outer circumference of the connecting member 406 between the fan 4 and the second magnetic member 405 . Of course, the effect of arranging the longitudinal members 4012 in the above two positions can also have the same effect. Preferably, the transverse part 4011 and the longitudinal part 4012 are integrally formed, and the transverse part 4011 and the longitudinal part 4012 are arranged coaxially. The upper and lower ends of the transverse member 4011 are in contact with the fan mounting plate 442 and the fan 4 respectively. The outer circumference of the longitudinal member 4012 is in contact with the fan mounting plate 442 .

Further, the outer periphery of the fan 4 is provided with a second elastic member 402 for restricting the movement of the fan 4 in a direction perpendicular to the direction of gravity. The restriction here is not a complete restriction, which cannot be moved at all, but restricts the movement of the fan 4 within a certain range, so as to realize the function of shock absorption and noise reduction. The second elastic member 402 may also be disposed on the outer periphery of the connecting member 406 between the fan 4 and the second magnetic member 405 . The specific position of the second elastic member 402 is not limited in detail here, as long as the fan 4 can be restricted from moving in a direction perpendicular to the direction of gravity. In a further specific embodiment, the fan can be restricted from moving in its radial direction.

In one embodiment, the fan installation device further includes a fan casing 44 for accommodating the fan 4, the fan casing 44 includes a fan casing peripheral wall 441 and a fan casing top wall 442, and the fan 4 is substantially vertically disposed in the fan casing 44 relative to the horizontal plane . The first magnetic member 404 is disposed on the side of the top wall 442 of the fan housing away from the fan 4 ; the second magnetic member 405 is disposed just above the first magnetic member 404 .

Further, the end of the fan 4 away from the top wall 442 of the fan housing is provided with a third elastic member 403 , and the third elastic member 403 is in contact with the structure below the fan 4 . It further plays a shock absorption role and reduces noise. The third elastic member 403 may be a flexible hose.

Referring to FIGS. 22-24 , and also FIGS. 1-5 , this embodiment discloses a surface cleaning device, which is not limited to the wet cleaning device in the above embodiment, but also includes cleaning devices such as vacuum cleaners. The surface cleaning device includes a housing 1, and an accommodating space is defined inside the housing 1, and a cord reel 8 can be placed. The casing 1 is provided with a wire hole 84 . The cable 81 on the cord reel 8 extends through the cable hole 84 along its length direction, and one end of the cable 81 is provided with a terminal 82 for connecting to a power source. Wherein, the wire hole 84 is provided with a scraper 83 for scraping off at least part of the foreign matter attached to the outer wall of the cable 81 when the cable 81 moves relative to the wire hole 84, wherein the foreign matter can be liquid, or It could be some other object adhered to the cable 81 . When the surface cleaning device with the cable reel 8 is in use, the cable 81 is generally outside the housing 1, and some objects, especially liquids, are easily attached to the surface. If there is, at least part of the foreign matter will be scraped off to prevent the foreign matter from entering the interior of the housing 1 , especially to prevent liquid from entering the interior of the housing 1 , which can effectively protect the electrical devices inside the housing 1 .

In one embodiment, the inner diameter of the wire-passing hole 84 is smaller than the outer diameter of the wiring terminal 82 , wherein the outer circumference of the wire-passing hole 84 is provided with an opening for the cable 81 to enter the wire-passing hole 84 along the radial direction of the wire-passing hole 84 85. In this way, the cable 81 can be easily installed into the cable hole 84 .

In another embodiment, the casing 1 includes an inner casing 11 and an outer casing 12 disposed outside the inner casing 11 ; the outer casing 12 includes an outer wire hole 842 , the inner casing 11 includes an inner wire hole 841 , and the outer casing 12 includes an outer wire hole 842 . The inner diameter of the wiring hole 842 is larger than the outer diameter of the connection terminal 82 , and the inner diameter of the inner connection hole is smaller than the outer diameter of the connection terminal 82 . The inner wire hole 841 is provided with an opening 85 for the cable 81 to enter the wire hole 84 along the radial direction of the wire hole 84 . Further, a liquid collecting part (not shown in the figure) is provided between the inner casing 11 and the outer casing 12 for collecting the liquid scraped by the scraping member 83 .

In one embodiment, the scraping member 83 is annular as a whole (an opening can be opened for the cable to enter and exit), and a channel 831 for the cable 81 to pass through is defined inside the scraping member 83 . The scraping member 83 is composed of a flexible material, and the scraping member 83 is configured such that the scraping member 83 can be bent in the moving direction of the cable 81 when the cable 81 is moved in the axial direction. That is, when the cable 81 is pulled out, the scraping member 83 is bent outward, and when the cable 81 is retracted inward, the scraping member 83 is bent inward, which can prevent the friction between the scraping member 83 and the cable 81. Large friction force, can not be pulled out or put away smoothly. Further, toward the center of the wire hole 84, the thickness of the scraping member 83 gradually decreases. In this way, the friction force can be reduced and the foreign matter can be scraped off. The scraping member 83 may be an integrally formed annular scraping member 83 , or the scraping member 83 is composed of a plurality of fan-shaped parts to form an annular scraping member 83 .

In another embodiment, the scraping member 83 is a plurality of bristles extending in the radial direction of the wire-passing hole 84 . The diameter of the channel 831 formed by the ends of the plurality of bristles is less than or equal to the diameter of the cable 81 . The plurality of bristles form an annular structure with a channel 831 in the middle, and when the cable 81 moves, the surface of the cable 81 is scraped.

Due to the relatively large force generated by the reel 8 when taking up the wire, the connection terminal 82 will collide with the wire hole 84, which not only generates noise, but also damages the housing 1 when used for a long time. Therefore, it is very necessary to provide an elastic damping member on the side of the wire hole 84 facing the connection terminal 82 .

Referring to FIG. 25 , and also referring to FIGS. 1-5 , the present embodiment discloses a wet cleaning device with an automatic cord reel 8 , which includes a cleaning liquid supply system, a dirt recovery system and a housing 1 . The cleaning fluid supply system includes a clean water tank 2 for storing cleaning fluid and a fluid distributor 9 for supplying cleaning fluid to the surface to be cleaned. The dirt recovery system includes a sewage tank 3 for recovering dirt, a fan 4 for generating airflow, and a suction duct 5 . A fan accommodating cavity 113 is defined inside the casing 1 for accommodating the fan 4 , and the fan 4 is connected to an external power source through a cable 81 to obtain power. The casing 1 is also provided with an automatic reel 8 for recovering the cables 81 outside the casing 1 into the casing 1 . By arranging the automatic reel 8 inside the casing 1, the cable 81 can be automatically stored in the casing 1, so that the overall appearance looks more beautiful.

In a specific embodiment, the clean water tank 2 and the sewage tank 3 are arranged on opposite sides of the automatic reel 8 along its axis direction. Specifically, a reel accommodating cavity is provided in the middle of the wet cleaning device, and the reel accommodating cavity and the fan accommodating cavity 113 are arranged adjacent to each other, and both are arranged in the middle of the wet cleaning device. The clean water tank 2 and the sewage tank 3 are respectively arranged on both sides of the wet cleaning device, so that the weight of the whole machine can be relatively uniform. Further, the automatic reel 8 is arranged between the clean water tank 2 and the fan 4 ; or the automatic reel 8 is arranged between the sewage tank 3 and the blower 4 . Specifically, the automatic cord reel 8 is vertically arranged in the cord reel accommodating cavity, and the automatic cord reel 8 is generally a ring-shaped structure. The vertical arrangement means that the axis of the automatic cord reel 8 is substantially perpendicular to the direction of gravity, so that it can be Effectively reduce the lateral distance of the wet cleaning device.

In one embodiment, the housing 1 includes a fan housing 444 defining the fan accommodating cavity 113 . The fan housing 444 can not only separate the fan 4 from the automatic reel 8 , but also play a role of shock absorption. The housing 1 also includes a mounting bracket for installing the automatic reel 8 , and part of the mounting bracket and part of the fan housing 444 share a wall, which can effectively save space and increase the thermal conductivity of the fan housing 444 . Specifically, the mounting bracket includes two oppositely arranged side walls 86 and a front wall 87 and a rear wall 88 oppositely arranged between the two side walls 86 . The height of the rear wall 88 is higher than the height of the cord reel to prevent the liquid brought in by the cable 81 from splashing to other places. The front wall 87 is provided with a wire hole 84 through which the cable 81 passes. The wire hole 84 is provided with a scraper 83 for scraping the liquid adhered to the outer periphery of the cable 81 . In one embodiment, the inner diameter of the wire passage hole 84 is smaller than the outer diameter of the terminal, wherein the outer circumference of the wire passage hole 84 is provided with an opening for the cable 81 to enter the wire passage hole 84 along the radial direction of the wire passage hole 84 . In this way, the cable 81 can be easily installed into the cable hole 84 . In one embodiment, the scraping member 83 is annular as a whole (an opening can be opened for the cable 81 to enter and exit), and a passage for the cable 81 to pass through is defined inside the scraper 83 . The scraping member 83 is composed of a flexible material, and the scraping member 83 is configured such that the scraping member 83 can be bent in the moving direction of the cable 81 when the cable 8181 is moved in the axial direction. That is, when the cable 81 is pulled out, the scraping member 83 is bent outward, and when the cable 81 is retracted inward, the scraping member 83 is bent inward, which can prevent the friction between the scraping member 83 and the cable 81. Large friction force, can not be pulled out or put away smoothly. Further, toward the center of the wire hole 84, the thickness of the scraping member 83 gradually decreases. In this way, the friction force can be reduced and the foreign matter can be scraped off. The scraping member 83 can be an integrally formed annular scraping member 83 , or the scraping member 83 is composed of a plurality of fan-shaped parts to form an annular scraping member 83 .

The wet cleaning device further includes a cooling air duct 481 outside the fan, and at least part of the cooling air duct 481 outside the fan is disposed above the accommodating cavity of the reel. Further, the cooling air duct 481 outside the fan includes a cooling air duct 4811 in front of the fan and a cooling air duct 4812 after the fan. At least part of the cooling air duct of the fan 4 is arranged around the automatic reel 8 . With this arrangement, the space inside the casing 1 can be effectively used.

Referring to FIG. 27 , in another embodiment, the sewage tank 3 and the clean water tank 2 are simultaneously arranged in the accommodating space on one side of the fan 4 , wherein the automatic reel 8 is arranged between the accommodating space and the fan 4 , or the automatic reel 8 is arranged on the other side of the fan 4 relative to the accommodating space.

Referring to FIG. 23 , in one embodiment, the wet cleaning device further includes a suction duct, and at least part of the suction duct is disposed below the accommodating cavity of the cord reel. By arranging the automatic cord reel 8 above the suction duct, the space in the vertical direction can be effectively utilized. Specifically, the fan 4 and the cord reel are basically arranged in the same plane, and an accommodating cavity is defined below the plane, and at least part of the suction pipe can extend in the accommodating cavity. At the same time, the water pipe that communicates with the clean water tank 2 can also be arranged in the accommodating cavity.

Referring to FIG. 26 , the automatic cord reel 8 can also be arranged horizontally below the fan 4 , and the suction pipe passes through the shaft hole of the automatic cord reel 8 . The horizontal arrangement of the automatic cord reel 8 means that the annular automatic cord reel 8 is laid flat under the fan 4 , that is, the axis of the automatic cord reel 8 is substantially parallel to the direction of gravity. Further, the center of the automatic cord reel 8 defines a through hole penetrating in the axial direction, and the suction pipe can pass through the through hole, thereby effectively reducing the volume of the whole machine.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent structures made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, similarly include within the scope of patent protection of the present invention.

Claims

A wet cleaning device, characterized in that it includes:

a cleaning fluid supply system comprising a clean water tank (2) for storing cleaning fluid and a fluid distributor (9) for supplying cleaning fluid to the surface to be cleaned;

A dirt recovery system, which includes a sewage tank (3) for recovering dirt, a fan (4) for generating airflow, and a suction duct (5);

A casing (1), the interior of which defines a fan accommodating cavity (113) for accommodating the fan (4), the fan accommodating cavity (113) is provided with a fan installation for installing the fan (4) device,

Wherein, the fan installation device comprises: a fan mounting plate (442) provided with a first magnetic member (404); a second magnetic member (405) is provided on the fan (4), wherein the first magnetic member (405) is provided on the fan (4). There is a mutual repulsive force between the member (404) and the second magnetic member (405) to keep the fan (4) relative to the distance between the fan mounting plate (442) along its gravitational direction at the first within a preset range;

Wherein, the fan (4) is arranged substantially vertically with respect to the horizontal plane, and the fan (4) is arranged below the fan mounting plate (442).
The wet cleaning device of claim 1, wherein:

The fan (4) is connected with an external power source through a cable (81) to obtain power;

Wherein, the casing (1) is further provided with an automatic reel (8) for recovering the cable (81) outside the casing (1) into the casing (1).
The wet cleaning device of claim 1, wherein:

The fan (4) includes a fan inner cover (43), and a first elastic member (401) is arranged between the fan inner cover (43) and the fan mounting plate (442).
The wet cleaning device of claim 3, wherein:

The first elastic member (401) includes a transverse member (4011) extending in the radial direction of the fan and a longitudinal member (4012) extending in the axial direction of the fan, and the transverse member (4011) is used to restrain the fan (4) Moving toward the fan mounting plate (442), the longitudinal member (4012) is used to restrict the fan (4) from moving in the radial direction.
The wet cleaning device according to claim 2 or 3, characterized in that,

The outer periphery of the fan (4) is provided with a second elastic member (402), which is used to restrict the fan (4) from moving in a direction perpendicular to the direction of gravity.
The wet cleaning device of claim 1, wherein:

The first magnetic member (404) and the second magnetic member (405) are arranged on the same side of the fan mounting plate (442).
The wet cleaning device of claim 1, wherein:

The first magnetic member (404) is installed on the upper surface of the fan mounting plate (442), and the second magnetic member (405) is arranged above the first magnetic member (404) along the vertical direction.
The wet cleaning device of claim 1, wherein:

Also included is a fan housing (44) for accommodating the fan (4), the fan housing (44) comprising a fan housing peripheral wall (441) and a fan housing top wall (442), the fan (4) facing each other It is arranged in the fan housing (44) substantially vertically on the horizontal plane.
The wet cleaning device of claim 1, wherein:

The first magnetic piece (404) is arranged on the side of the top wall (442) of the fan housing away from the blower (4); the second magnetic piece (405) is arranged on the first magnetic piece (404) ) directly above.
The wet cleaning device of claim 1, wherein:

A third elastic member (403) is provided at one end of the fan (4) away from the top wall (442) of the fan housing, and the third elastic member (403) is in contact with the structure below the fan (4).
A wet cleaning device, characterized in that it includes:

a cleaning fluid supply system comprising a clean water tank (2) for storing cleaning fluid and a fluid distributor (9) for supplying cleaning fluid to the surface to be cleaned;

A dirt recovery system, which includes a sewage tank (3) for recovering dirt, a fan (4) for generating airflow, and a suction pipe (5); the sewage tank (3) includes an air intake pipe (32), an exhaust pipe (33) and a gas-liquid separation device (31), the gas-liquid separation device (31) is used for gas-liquid separation of the fluid flowing out from the outlet (321) of the intake pipe (32),

Wherein, the gas-liquid separation device (31) comprises: a main body (311); a plurality of liquid guiding parts (312) arranged on the main body (311), and the plurality of liquid guiding parts (312) are arranged at intervals at the outlet (321) of the air inlet pipe (32); a gas outlet (313) arranged between two adjacent liquid guiding parts (312); the liquid guiding part (312) along the direction of gravity ) bottom end is lower than the top end of the gas outlet (313).
The surface cleaning device of claim 11, wherein:

The liquid guiding part (312) includes two collection side walls (3122) arranged at a preset angle and connected, and a liquid flow channel (3121) for liquid circulation is defined between the two collection side walls (3122).
13. The wet cleaning device of claim 12, wherein:

The collection side wall (3122) includes a long side (3133) and a short side (3134) that are arranged opposite to each other and extend substantially along the liquid flow direction; wherein, the long side and the long side of two adjacent collection side walls (3122) are opposite to each other. The sides are connected, and the short sides of the two adjacent collection side walls (3122) are connected with the short sides.
The wet cleaning device of claim 11, wherein:

The liquid guide portion (312) extends downward and outward relative to the body (311).
14. The wet cleaning device of claim 13, wherein:

The long side (3133) and the short side (3134) are close to each other at the body (311).
The wet cleaning device of claim 11, wherein:

The body (311) defines an inverted cavity (3111) opening toward the outlet (321) of the air inlet pipe (32), and a plurality of the liquid guides (312) are at least partially spaced apart from the Invert around the opening of cavity (3111).
The wet cleaning device of claim 11, wherein:

The gas-liquid separation device (31) is covered and arranged above the outlet (321) of the air inlet pipe (32) along the vertical direction.
The wet cleaning device of claim 11, wherein:

The top end of the gas outlet (313) is lower than the bottom end of the outlet (321) of the intake pipe (32).