Air duct components and cleaning devices

Abstract

The present invention discloses an air duct assembly and a cleaning device. The air duct assembly includes a dirt collecting box, a filter, a cyclone separator and a fan. A dirt collecting chamber is provided in the dirt collecting box, and the dirt collecting box is also provided with a dirt inlet and an air outlet connected to the dirt collecting chamber. An air guide structure is provided in the dirt collecting chamber, the filter is provided in the air outlet, the cyclone separator is connected to the air outlet, and the fan is connected to the cyclone separator. The fan drives the airflow into the dirt collecting chamber from the dirt inlet, and enters the cyclone separator from the air outlet after being guided by the air guide structure, and then enters the fan from the cyclone separator. The technical solution of the present invention enables the water vapor absorbed by the cleaning device to be effectively separated, reduces the possibility that the water vapor will become moldy and produce odor after being retained in the subsequent air duct in the cleaning device for a long time, and enters the fan of the cleaning device to affect the working life of the fan, and also improves the service life of the filter element and other components in the base station.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning devices, and in particular to an air duct component and a cleaning device using the air duct component. Background Art

[0002] When a floor scrubber is washing the floor, the fan inside the floor scrubber rotates to form negative pressure, which can then suck out garbage and sewage on the floor, thereby completing the cleaning of the floor. However, floor scrubbers in related art do not effectively separate the sucked water vapor during cleaning, so that the water vapor stays in the subsequent air duct of the floor scrubber for a long time, becomes moldy and produces odor, or enters the fan and affects the working life of the fan. Summary of the invention

[0003] The main purpose of the present invention is to provide an air duct assembly, which is designed to effectively separate the water vapor absorbed by the cleaning device, thereby reducing the possibility that the water vapor will become moldy and produce odor after being retained in the subsequent air duct in the cleaning device for a long time, and enter the fan of the cleaning device to affect the working life of the fan.

[0004] To achieve the above object, the air duct assembly proposed by the present invention includes:

[0005] A dirt collecting box, wherein a dirt collecting cavity is provided in the dirt collecting box, and the dirt collecting box is also provided with a dirt inlet and an air outlet connected to the dirt collecting cavity, and an air guide structure is provided in the dirt collecting cavity;

[0006] A filter element, the filter element being arranged in the air outlet;

[0007] a cyclone separator, the cyclone separator being connected to the air suction port; and

[0008] A fan is connected to the cyclone separator, and drives the airflow from the sewage inlet into the sewage collecting chamber, and after being guided by the wind guide structure, enters the cyclone separator from the air exhaust port, and then enters the fan from the cyclone separator.

[0009] In one embodiment of the present invention, a sewage inlet passage is provided in the air guide structure, and the sewage inlet passage is connected to the sewage inlet and the sewage collecting chamber;

[0010] It is defined that the dirt collecting box has an up-down direction, and in the up-down direction of the dirt collecting box, the outlet of the dirt inlet channel is higher than the dirt inlet port.

[0011] In one embodiment of the present invention, the air guide structure includes a first plate body, a second plate body, a third plate body and a fourth plate body, the first plate body, the second plate body, the third plate body and the fourth plate body are all connected to the cavity wall of the sewage collecting cavity and surround the outer side of the sewage inlet, and the first plate body, the second plate body, the third plate body and the fourth plate body enclose the sewage inlet channel.

[0012] In one embodiment of the present invention, the sewage inlet and the air outlet are located on the same side wall of the sewage collecting chamber and are staggered in the up-down direction of the sewage collecting box.

[0013] In one embodiment of the present invention, the outlet of the sewage inlet channel is arranged upward, the first plate body is located between the sewage inlet and the air outlet, and the second plate body is arranged opposite to the sewage inlet;

[0014] Surfaces of one end of the first plate body and the second plate body away from the sewage inlet are higher than surfaces of one end of the third plate body and the fourth plate body away from the sewage inlet.

[0015] In one embodiment of the present invention, one end of the first plate away from the second plate abuts against the side wall of the dirt collecting chamber, and a gap is provided between one end of the second plate away from the air outlet and the side wall of the dirt collecting chamber.

[0016] In one embodiment of the present invention, the sewage inlet channel includes a first channel section and a second channel section, the first channel section is connected to the sewage inlet and is arranged in a spiral shape; the second channel section is connected to the first channel section and is arranged in a spiral shape, and the spiral direction of the second channel section is opposite to the spiral direction of the first channel section, and the outlet of the sewage inlet channel is formed at one end of the second channel section away from the first channel section;

[0017] And / or, in the up-down direction of the dirt collecting box, the position of the air exhaust port is higher than the position of the dirt inlet port.

[0018] In one embodiment of the present invention, the filter element is filter cotton;

[0019] And / or, at least two conical air flow channels are provided in the cyclone separator;

[0020] And / or, a filter element is provided at the outlet of the cyclone separator.

[0021] In one embodiment of the present invention, the air duct assembly further includes a first pipeline, the first pipeline is connected to the air suction port and the cyclone separator, and the air flow direction of the first pipeline and the air suction port is set at an angle.

[0022] In one embodiment of the present invention, the air duct assembly further includes a second pipeline and a third pipeline, the second pipeline is connected to the cyclone separator and the fan, the third pipeline is connected to the fan and the outside, and the third pipeline and the second pipeline are arranged at an angle.

[0023] In one embodiment of the present invention, the third pipeline is extended in a bent shape.

[0024] The present invention also proposes a cleaning device, comprising an air duct assembly, the air duct assembly comprising a dirt collecting box, a filter element, a cyclone separator and a fan; a dirt collecting chamber is provided in the dirt collecting box, the dirt collecting box is also provided with a dirt inlet and an air exhaust port connected to the dirt collecting box, an air guide structure is provided in the dirt collecting chamber, the filter element is provided in the air exhaust port, the cyclone separator is connected to the air exhaust port, the fan is connected to the cyclone separator, the fan drives the airflow into the dirt collecting chamber from the dirt inlet, and after being guided by the air guide structure, enters the cyclone separator from the air exhaust port, and then enters the fan from the cyclone separator.

[0025] When the air duct assembly of the technical solution of the present invention is applied to a cleaning device, the fan is started to exhaust air, so that a negative pressure is formed at the sewage inlet of the sewage collection box, and the garbage and sewage on the ground can be sucked out. After that, after the mixture of garbage and sewage enters the sewage collection chamber of the sewage collection box, the airflow path in the sewage collection chamber is relatively long due to the guiding and rectifying effect of the air guide structure, and the garbage and water droplets with relatively large particles mixed in the airflow can be retained in the sewage collection chamber of the sewage collection box under the action of gravity, while the mixture of garbage and water droplets with relatively small particles continue to move toward the air outlet with the airflow. Afterwards, when passing through the air outlet, the filter element arranged in the air outlet can preliminarily filter and intercept the garbage and water droplets with relatively small particles, and only allow the mixture of air, water vapor and dust to pass through. After that, when the mixture of air, water vapor and dust enters the cyclone separator, the airflow rotates at high speed in the cyclone separator to generate centrifugal force, which can throw the water vapor and dust to the side wall or bottom wall of the airflow channel in the cyclone separator for collection; or fully vaporize the water particles. After that, when the airflow passes through the high-precision filter element at the outlet of the cyclone separator, the filter element can filter and intercept the water vapor and dust in the airflow again with high precision, so that only the air is allowed to continue to move forward and enter the fan. Therefore, in this solution, the air duct assembly effectively separates the water vapor and dust sucked away by the cleaning device through the gravity separation action in the dirt collecting box, the preliminary filtering and interception action in the exhaust port, the centrifugal separation action of the cyclone separator, and the secondary interception and filtration by the high-precision filter element, so that the cleaning device has only air in the subsequent air duct after the cyclone separator, thereby reducing the possibility of water vapor becoming moldy and generating odor after being retained in the subsequent air duct of the cleaning device for a long time, and entering the fan of the cleaning device and affecting the working life of the fan, while also improving the service life of the filter element and other components in the base station. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of an embodiment of an air duct assembly of the present invention;

[0028] Figure 2 for Figure 1 A partial cross-sectional schematic diagram of the middle air duct assembly;

[0029] Figure 3 A partial cross-sectional schematic diagram of another embodiment of the air duct assembly of the present invention.

[0030] Description of Figure Numbers:

[0031] Label name Label name 100 Air duct components 117 Fourth plate 10 Dirt box 10g Sewage inlet channel 10g Sewage Inlet 10h First channel section 10c Air vent 10f Second channel section 10e Dirt collection chamber 30 Cyclone separator 11 Wind guide structure 50 Fan 111 The first plate 70 First pipeline 113 The second plate 80 Second pipeline 115 The third plate 90 The third pipeline

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] Please refer to Figure 1 and Figure 2 , the present invention proposes an air duct assembly 100 .

[0038] In one embodiment of the present invention, the air duct assembly 100 includes a dirt collecting box 10, a filter element, a cyclone separator 30 and a fan 50, wherein a dirt collecting chamber 10e is provided in the dirt collecting box 10, and the dirt collecting box 10 is also provided with a dirt inlet 10a and an air outlet 10c connected to the dirt collecting chamber 10e, and an air guide structure is provided in the dirt collecting chamber; the filter element is arranged in the air outlet 10c; the cyclone separator 30 is connected to the air outlet 10c; the fan 50 is connected to the cyclone separator 30, and the fan 50 drives the airflow into the dirt collecting chamber 10e from the dirt inlet 10a, and enters the cyclone separator 30 from the air outlet 10c after being guided by the air guide structure 11, and then enters the fan 50 from the cyclone separator 30.

[0039] In one embodiment of the present invention, the dirt collection chamber 10e of the dirt collection box 10 can be used to initially collect and accommodate the garbage and sewage entering from the dirt inlet 10a when the cleaning device is cleaning the ground, so that the cleaning device can continuously clean the ground. Among them, the projection of the dirt collection box 10 on the horizontal plane can be roughly a semicircular structure, a rectangular structure or a square structure, so that the shape of the dirt collection box 10 is relatively regular and easy to form and manufacture. The wind guide structure 11 can be used to guide and rectify the airflow entering the dirt collection chamber 10e, so that the airflow has a relatively long flow path in the dirt collection chamber 10e, so that the garbage and water droplets with relatively large particles are retained in the dirt collection chamber 10e. The filter element can be used to filter and block the garbage and water droplets with relatively small particles that move to the exhaust point with the airflow, reducing the possibility of them continuing to move with the airflow and entering the cyclone separator 30. Among them, the filter element can be fixed in the air outlet 10c by gluing, fixing by setting a card slot on the dirt collecting box 10, or connecting by screws, etc. This application does not limit this. It can make the filter element more firmly placed in the air outlet 10c to perform a more stable filtering and blocking work. The cyclone separator 30 can be used for the airflow passing through the air outlet 10c to enter. Since the cyclone separator 30 can make the incoming airflow rotate at a high speed to generate centrifugal force, the water vapor in the airflow can be thrown to the side wall or bottom wall of the airflow channel of the cyclone separator 30 through the centrifugal force; or the water particles can be fully vaporized to achieve the separation of water vapor mixed in the airflow. Among them, the cyclone separation principle of the cyclone separator 30 is a prior art, so the specific structure of the cyclone separator 30 is not described in detail here. The fan 50 can be used to provide airflow power, driving the airflow on the ground to pass through the sewage inlet 10a, the sewage collecting box 10, the filter element, the cyclone separator 30 and the fan 50 in sequence, and finally be discharged to the outside by the fan 50, so that negative pressure is generated at the sewage inlet 10a to achieve the suction of garbage and sewage on the ground.

[0040] When the air duct assembly 100 of the technical solution of the present invention is applied to a cleaning device, the fan 50 is started to exhaust air, so that a negative pressure is formed at the sewage inlet 10a of the sewage collection box 10, and the garbage and sewage on the ground can be sucked out. After that, after the mixture of garbage and sewage enters the sewage collection chamber 10e in the sewage collection box 10, the airflow path in the sewage collection chamber 10e is relatively long after the airflow is guided and rectified by the air guide structure 11, and the garbage and water droplets with relatively large particles mixed in the airflow can be retained in the sewage collection box 10 under the action of gravity, while the mixture of garbage and water droplets with relatively small particles continues to move toward the air outlet 10c with the airflow. Afterwards, when passing through the air outlet 10c, the filter element arranged in the air outlet 10c can filter and block the garbage and water droplets with relatively small particles, and only allow the mixture of air and water vapor to pass through. After that, when the air and water vapor mixture enters the cyclone separator 30, the air flow rotates at high speed in the cyclone separator 30 to generate centrifugal force, through which the water vapor can be thrown onto the side wall or bottom wall of the air flow channel in the cyclone separator 30; or the water particles are fully vaporized, and only the air is allowed to continue to move forward and enter the fan 50. Therefore, in this solution, the air duct assembly 100 effectively separates the water vapor sucked out by the cleaning device through the gravity separation effect in the dirt collection box 10, the filtration separation effect in the air outlet 10c and the centrifugal separation effect of the cyclone separator 30, so that the cleaning device has only air in the subsequent air duct after the cyclone separator 30, thereby reducing the possibility that the water vapor will be moldy and produce odor after being retained in the subsequent air duct of the cleaning device for a long time, and enter the fan 50 of the cleaning device to affect the working life of the fan 50.

[0041] Please refer to Figure 2 In one embodiment of the present invention, a sewage inlet channel 10g is provided in the air guide structure 11, and the sewage inlet channel 10g is connected to the sewage inlet port 10a and the sewage collecting chamber 10e; the sewage collecting box 10 is defined to have an up-down direction, and in the up-down direction of the sewage collecting box 10, the outlet of the sewage inlet channel 10g is higher than the sewage inlet port 10a.

[0042] It can be understood that the outlet of the sewage inlet channel 10g is arranged higher than the sewage inlet port 10a, so that the airflow is blown out from the outlet of the sewage inlet channel 10g and has a certain height with the bottom wall of the sewage collecting chamber 10e. At this time, the garbage and water droplets with relatively large particles mixed in the airflow are in a suspended state when entering the sewage collecting chamber 10e from the outlet of the sewage inlet channel 10g, and fall to the bottom wall of the sewage collecting chamber 10e under the action of their own gravity. In this way, the garbage and water droplets with relatively large particles begin to separate from the airflow by their own gravity as soon as they enter the sewage collecting chamber 10e, so that the garbage and water droplets with relatively large particles are separated more quickly and fully in the sewage collecting chamber 10e, so as to improve the separation effect of the garbage and water droplets with relatively large particles. At the same time, by setting it in this way, the air guide structure 11 can also prevent the sewage in the sewage collecting chamber 10e from flowing out of the sewage inlet port 10a, thereby reducing the possibility of the sewage in the sewage collecting chamber 10e flowing out from the sewage inlet port 10a.

[0043] Please refer to Figure 2 In one embodiment of the present invention, the air guide structure includes a first plate 111, a second plate 113, a third plate 115 and a fourth plate 117. The first plate 111, the second plate 113, the third plate 115 and the fourth plate 117 are all connected to the cavity wall of the sewage collecting cavity 10e and surround the outer side of the sewage inlet 10a. The first plate 111, the second plate 113, the third plate 115 and the fourth plate enclose a sewage inlet channel 10g.

[0044] It can be understood that the air guide structure 11 is formed by the first plate 111, the second plate 113, the third plate 115 and the fourth plate 117, so that the structure of the air guide structure 11 is relatively simple and the shape is relatively regular, so that it is easy to manufacture the air guide structure 11. Of course, in other embodiments, the air guide structure 11 is a tubular structure, or it is also possible to enclose the cavity wall of the sewage collection cavity 10e to form a sewage inlet channel 10g.

[0045] Please refer to Figure 2 In one embodiment of the present invention, the sewage inlet 10a and the air outlet 10c are located on the same side wall of the sewage collecting chamber 10e and are staggered in the vertical direction of the sewage collecting box 10.

[0046] It can be understood that the sewage inlet 10a and the air outlet 10c are located on the same cavity wall of the sewage collecting chamber 10e and are staggered, so that the airflow can change direction after entering the sewage collecting chamber 10e from the sewage inlet 10a and flow to the air outlet 10c in a circuitous manner. At this time, the relatively long flow path of the airflow can allow the garbage with relatively large particles mixed in the airflow to have a certain separation time, so that the garbage with relatively large particles can be more fully retained in the sewage collecting chamber 10e under the action of its own gravity, thereby improving the separation effect of the garbage with relatively large particles. Among them, the sewage inlet 10a can be set on the center line of the cavity wall of the sewage collecting chamber 10e, and the air outlet 10c is located on one side of the cavity wall of the sewage collecting chamber 10e, so that the sewage inlet 10a can be roughly located at the center of the bottom of the cleaning device and the ground area under the bottom of the cleaning device can be cleaned evenly, and at the same time, the staggered distance between the air inlet and the air outlet 10c has a certain spacing to ensure the length of the flow path of the airflow in the sewage collecting chamber 10e. Of course, the sewage inlet 10a and the air outlet 10c may be respectively disposed on opposite sides of the cavity wall of the sewage collecting cavity 10e. In addition, it should be noted that the present application is not limited thereto, and in other embodiments, the sewage inlet 10a and the air outlet 10c may be located on different cavity walls of the sewage collecting cavity 10e, for example, they may be disposed on two opposite cavity walls of the sewage collecting cavity 10e.

[0047] Please refer to Figure 2 In one embodiment of the present invention, the outlet of the sewage inlet channel 10g is arranged upward, the first plate 111 is located between the sewage inlet 10a and the exhaust port 10c, and the second plate 113 is arranged opposite to the sewage inlet 10a; the surfaces of the first plate 111 and the second plate 113 at one end away from the sewage inlet 10a are higher than the surfaces of the third plate 115 and the fourth plate 117 at one end away from the sewage inlet 10a.

[0048] It can be understood that the surfaces of the first plate 111 and the second plate 113 at one end away from the sewage inlet 10a are relatively high, so that the airflow outflowing from the sewage inlet channel 10g can be blocked and guided by the first plate 111 and the second plate 113, and flows along the extension direction of the second plate 113, that is, away from the air outlet 10c, and then flows from the outside of the second plate 113 toward the air outlet 10c under the blocking effect of the cavity wall of the sewage collection chamber 10e. At this time, the flow path of the airflow in the sewage collection chamber 10e is further increased, so as to further facilitate the full separation of the garbage with relatively large particles mixed in the airflow. At the same time, such a setting also facilitates the stacking and collection of garbage in various areas in the sewage collection chamber 10e, which is conducive to improving the space utilization efficiency in the sewage collection box 10. In order to simplify the structure of the air guide structure 11 and facilitate the processing and manufacturing of the air guide structure 11, the first plate 111, the second plate 113, the third plate 115 and the fourth plate 117 can all be vertical plate structures, that is, the sewage inlet channel 10g formed by the enclosed plate 113 is projected in a square shape on the horizontal plane. At this time, the part of the side wall of the sewage collecting chamber 10e with the inlet opening can be in an arc shape convex to the inside of the sewage collecting chamber 10e, or in an inclined shape toward the inside of the sewage collecting chamber 10e in the direction facing the bottom wall of the sewage collecting chamber 10e, so that the lower ends of the first plate 111, the third plate 115 and the fourth plate 117 are connected to the side wall of the sewage collecting chamber 10e. Specifically, the lower end of the first plate 111 can be connected to the side wall of the sewage collecting chamber 10e with the sewage inlet 10a and the bottom wall of the sewage collecting chamber 10e, the lower end of the second plate 113 is connected to the bottom wall of the sewage collecting chamber 10e, the third plate 115 and the first plate 111 are arranged oppositely, the lower end of the third plate 115 is connected to the side wall of the sewage collecting chamber 10e with the sewage inlet 10a and the bottom wall of the sewage collecting chamber 10e, the fourth plate 117 and the second plate 113 are arranged oppositely, and the lower end of the fourth plate 117 is connected to the side wall of the sewage collecting chamber 10e with the sewage inlet 10a. Of course, the present application is not limited to this. In other embodiments, the lower ends of the first plate 111, the second plate 113, the third plate 115 and the fourth plate 117 can also be connected only to the side wall of the sewage collecting chamber 10e with the sewage inlet 10a.

[0049] Please refer to Figure 2 In one embodiment of the present invention, one end of the first plate 111 away from the second plate 113 abuts against the side wall of the dirt collecting chamber 10e, and there is a gap between one end of the second plate 113 away from the air outlet 10c and the side wall of the dirt collecting chamber 10e.

[0050] It can be understood that at this time, the first plate 111 and the second plate 113 are relatively long, which can better block the airflow and improve the guiding effect of the first plate 111 and the second plate 113 on the airflow, so that the airflow can flow more fully in the direction away from the air outlet 10c after being blocked by the first plate 111 and the second plate 113, and then change direction under the blocking of the cavity wall of the sewage collection cavity 10e and flow to the air outlet 10c in a circuitous manner. Among them, there can be a connection relationship between the side edge of the end of the first plate 111 away from the second plate 113 and the cavity side wall of the sewage collection cavity 10e, that is, the side edge is connected to the cavity side wall of the sewage collection cavity 10e to ensure the sealing between the two. Furthermore, the cavity wall of the sewage collection cavity 10e facing the sewage inlet 10a can be an arc-shaped structure, and the concave surface is arranged toward the sewage inlet 10a. At this time, the dust collecting box has a roughly semicircular structure, so that the space on the flow path between the airflow blocking the arc-shaped cavity wall of the dirt collecting cavity 10e and the air exhaust port 10c is relatively long, and the wind pressure in this area is relatively small, which can facilitate the retention of relatively large particles of garbage in the dirt collecting cavity 10c.

[0051] Please refer to Figure 2 In one embodiment of the present invention, in the vertical direction of the dirt collecting box 10, the position of the dirt inlet 10a is lower than the position of the air outlet 10c.

[0052] It can be understood that the position of the sewage inlet 10a is set lower than the position of the air outlet 10c, so that the airflow has a tendency to flow upward when it flows from the sewage inlet 10a to the air outlet 10c in the sewage collection box 10. At this time, the garbage with relatively large particles moves downward under the action of gravity, while the mixture of garbage with relatively small particles and water droplets moves downward with the airflow, which makes it easier to separate the garbage with relatively large particles from the airflow. At the same time, such a setting also makes the position of the air outlet 10c relatively high and reduces the possibility of being covered by the garbage in the sewage collection box 10, thereby increasing the capacity of the sewage collection box 10 for garbage and improving the utilization efficiency of the space in the sewage collection box 10. Of course, the present application is not limited to this. In other embodiments, in the up and down direction of the sewage collection box 10, the position of the sewage inlet 10a and the position of the air outlet 10c are also possible to be at the same height.

[0053] Please refer to Figure 3 In one embodiment of the present invention, the sewage inlet channel 10g includes a first channel section 10h and a second channel section 10f. The first channel section 10h is connected to the sewage inlet port 10a and is arranged in a spiral shape. The second channel section 10h is connected to the first channel section 10h and is arranged in a spiral shape. The spiral direction of the second channel section 10h is opposite to the spiral direction of the first channel section 10h. The outlet of the sewage inlet channel 10g is formed at one end of the second channel section 10h away from the first channel section 10h.

[0054] It can be understood that the sewage inlet channel 10g is composed of a first channel section 10h and a second channel section 10f arranged in a spiral shape, so that the airflow can rotate at high speed after passing through the first channel section 10h and the second channel section 10f in sequence to generate centrifugal force. At this time, the relatively large garbage and water droplets mixed in the airflow can be fully thrown onto the side wall of the sewage collecting chamber 10e by the centrifugal force, and then flow down along the side wall of the sewage collecting chamber 10e to the bottom of the chamber under the action of gravity to be settled and collected in the sewage collecting chamber 10e. Since the airflow directly spreads out after flowing out from the second channel section 10f, it can continue to flow in the direction toward the air outlet 10a. Therefore, the setting of the air guide structure 11 allows larger garbage and water droplets to be better separated from the airflow through the centrifugal separation effect of the air guide structure when they enter the dust collecting chamber, thereby helping to improve the separation and collection effect of relatively large particles of garbage and water droplets in the sewage collecting chamber 10e. Further, in order to make relatively large garbage and water droplets have a relatively high height and fall better after coming out of the sewage inlet channel 10g, and at the same time reduce the possibility of sewage in the sewage collection chamber 10e flowing back from the sewage inlet channel 10g. The first channel section 10h can be arranged in a gradually rising spiral shape, and the second channel section 10f can be arranged in a horizontal spiral shape. Of course, the present application is not limited to this. In other embodiments, the first channel section 10h and the second channel section 10f are both arranged in a horizontal spiral shape, or both are arranged in a gradually rising spiral shape. In addition, in order to better extend the flow path of the airflow in the sewage collection chamber 10e, the end of the first channel section 10h away from the sewage inlet can be arranged along the end away from the exhaust port 10c to extend the spiral, so that the sewage inlet is located between the outlet of the sewage inlet channel 10g and the exhaust port 10c. Among them, the sewage inlet channel 10g can be formed by enclosing a bottom plate and three connected side plates, and of course it can also further include a top plate covered on the three connected side plates.

[0055] In one embodiment of the present invention, the filter element is filter cotton.

[0056] It can be understood that the filter cotton has good adsorption performance and a certain filtering volume, so it can improve the filtering and blocking effect of the filter element on relatively small particles of garbage and water droplets. Of course, the present application is not limited to this. In other embodiments, the filter element can also be a gauze or a silk screen.

[0057] In one embodiment of the present invention, at least two conical air flow channels are disposed in the cyclone separator 30 .

[0058] It can be understood that the provision of at least two conical air flow channels allows the air flow entering the cyclone separator 30 to simultaneously perform high-speed rotational motion in at least two conical air flow channels, so as to simultaneously separate water vapor in the air flow through at least two conical air flow channels, thereby improving the water vapor separation effect of the cyclone separator 30.

[0059] In one embodiment of the present invention, a filter element is provided at the outlet of the cyclone separator 30 .

[0060] It can be understood that the air flowing out of the cyclone separator 30 can be further filtered by the filter element to further block and filter water mist and dust, thereby more advantageously ensuring that the airflow flowing out of the cyclone separator 30 is only air and ensuring the water vapor separation effect of the subsequent air duct of the cleaning device after the cyclone separator 30.

[0061] Please refer to Figure 1 or Figure 2 In one embodiment of the present invention, the air duct assembly 100 further includes a first pipeline 70, the first pipeline 70 is connected to the air outlet 10c and the cyclone separator 30, and the air flow direction of the first pipeline 70 and the air outlet 10c is set at an angle.

[0062] It can be understood that the air outlet 10c and the inlet of the cyclone separator 30 can be well connected through the opposite ends of the first pipeline 70, thereby improving the convenience of the connection between the air outlet 10c and the cyclone separator 30. The wind direction of the first pipeline 70 and the air outlet 10c is set at an angle, which can make the distribution between the first pipeline 70, the cyclone separator 30 and the dirt collecting box 10 more compact, thereby helping to reduce the overall volume of the air duct assembly 100, so as to facilitate the installation of the air duct assembly 100 on the cleaning device. Among them, the shape of the cross-section of the first pipeline 70 can be square or circular, so that the shape of the first pipeline 70 is more regular and easy to form and manufacture, and can be specifically adapted according to the shape of the air outlet 10c. Of course, it should be noted that in other embodiments, it is also possible for the air outlet 10c and the outlet of the cyclone separator 30 to be directly connected.

[0063] Please refer to Figure 1 or Figure 2 In one embodiment of the present invention, the air duct assembly 100 also includes a second pipeline 80 and a third pipeline 90, the second pipeline 80 is connected to the cyclone separator 30 and the fan 50, the third pipeline 90 is connected to the fan 50 and the outside, and the third pipeline 90 and the second pipeline 80 are arranged at an angle.

[0064] It can be understood that the cyclone separator 30 and the fan 50 can be well connected through the opposite ends of the second pipeline 80, thereby improving the convenience of connection between the inlet of the fan 50 and the outlet of the cyclone separator 30. The air flowing out of the outlet of the fan 50 can be guided through the third pipeline 90, so that the air flowing out of the outlet of the fan 50 is discharged to the outside according to the preset flow path. The third pipeline 90 and the second pipeline 80 are arranged at an angle, so that the distribution between the cyclone separator 30, the second pipeline 80, the fan 50 and the third pipeline 90 is more compact, which is further conducive to reducing the overall volume of the air duct assembly 100, so as to facilitate the installation of the air duct assembly 100 on the cleaning device. Furthermore, the angle formed by the second pipeline 80 and the second pipeline 80 can be set toward the dirt collecting box 10 to further reduce the space occupied by the several.

[0065] Please refer to Figure 1 or Figure 2 In one embodiment of the present invention, the third pipeline 90 is extended in a bent shape.

[0066] It can be understood that such a configuration can reduce the possibility of interference between the end of the third pipeline 90 away from the fan 50 and the first pipeline 70 or the dirt collecting box 10, thereby facilitating the stable configuration of each mechanism. At the same time, when the air flows in the third pipeline 90, the third pipeline 90 can also extend in a bent shape and collide with the inner wall of the third pipeline 90 to reduce the flow speed of the air, thereby reducing the noise generated at the outlet of the third pipeline 90. The third pipeline 90 can be bent once, twice or more times.

[0067] The present invention also proposes a cleaning device, which includes an air duct assembly 100. The specific structure of the air duct assembly 100 refers to the above embodiment. Since the cleaning device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the cleaning device can be a floor scrubber, a sweeping robot or a vacuum cleaner, etc., and the air duct assembly 100 can be arranged in the body of the cleaning device.

[0068] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An air duct assembly, characterized in that: include: A dirt collecting box, wherein a dirt collecting cavity is provided in the dirt collecting box, and the dirt collecting box is further provided with a dirt inlet and an air outlet communicating with the dirt collecting cavity, and an air guide structure is provided in the dirt collecting cavity; the dirt inlet and the air outlet are located on the same cavity side wall of the dirt collecting cavity, and are staggered in the up and down direction of the dirt collecting box; A filter element, the filter element being arranged in the air outlet; A cyclone separator, the cyclone separator is connected to the air suction port; as well as A fan, the fan is connected to the cyclone separator, the fan drives the airflow from the sewage inlet into the sewage collecting chamber, and after being guided by the wind guide structure, enters the cyclone separator from the air suction port, and then enters the fan from the cyclone separator; The air guide structure includes a first plate, a second plate, a third plate and a fourth plate, the first plate, the second plate, the third plate and the fourth plate are all connected to the cavity wall of the sewage collecting cavity and surround the outer side of the sewage inlet, and the first plate, the second plate, the third plate and the fourth plate are enclosed to form a sewage inlet channel connecting the sewage inlet and the sewage collecting cavity; The outlet of the sewage inlet channel is arranged upward, the first plate body is located between the sewage inlet and the air outlet, and the second plate body is arranged opposite to the sewage inlet; Surfaces of one end of the first plate body and the second plate body away from the sewage inlet are higher than surfaces of one end of the third plate body and the fourth plate body away from the sewage inlet.

2. The air duct assembly according to claim 1, characterized in that: The dirt collecting box is defined to have an up-down direction, and in the up-down direction of the dirt collecting box, the outlet of the dirt inlet channel is higher than the dirt inlet port; In the up-down direction of the dirt collecting box, the position of the air exhaust port is higher than the position of the dirt inlet port.

3. The air duct assembly according to claim 1, characterized in that: One end of the first plate body away from the second plate body abuts against the cavity side wall of the dirt collecting cavity, and a gap is provided between one end of the second plate body away from the air suction port and the cavity side wall of the dirt collecting cavity.

4. The air duct assembly according to any one of claims 1 to 3, characterized in that: The filter element is filter cotton; And / or, the cyclone separator is provided with at least two conical air flow channels; And / or, a filter element is provided at the outlet of the cyclone separator.

5. The air duct assembly according to any one of claims 1 to 3, characterized in that: The air duct assembly further includes a first pipeline, the first pipeline is connected to the air suction port and the cyclone separator, and the air flow direction of the first pipeline and the air suction port is arranged at an angle.

6. A cleaning device, characterized in that: The invention comprises an air duct assembly as claimed in any one of claims 1 to 5.

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