A separation module for a cleaning machine and a cleaning machine

Abstract

The application relates to a separation module for a cleaning machine and the cleaning machine. The separation module comprises a shell with a chamber in the interior, an air inlet pipeline and an air outlet, the air inlet pipeline has an air outlet communicating with the chamber; a separation piece is arranged in the chamber; a pressing plate is arranged in the chamber in a circumferential direction in a posture that the plate surface of the pressing plate intersects with the inner circumferential wall of the shell, the starting end of the pressing plate is connected with the top edge of the air outlet, and the pressing plate comprises a spiral section gradually extending downwards along the circumferential direction of the inner circumferential wall of the shell from the starting end, and the spiral section surrounds the circumferential side of the separation piece. The spiral section guides the mixed gas flow entering through the air inlet pipeline to the bottom of the chamber to drive the stored water to rotate and achieve self-cleaning of the chamber. When the cleaning machine is in a dry mode, the gas flow is pressed to make the gas flow fully contact with the stored water at the bottom, the water film adsorbs the dust in the air, the water splash at the bottom of the chamber is suppressed, and the probability of water flow entering the air outlet is reduced.

Description

Technical Field

[0001] This invention belongs to the field of household washing and cleaning, and specifically relates to a separation module for a cleaning machine and a cleaning machine. Background Technology

[0002] The cleaning machine is a floor scrubber or sweeper. The floor scrubber or sweeper sucks the mixture of dust and water vapor on the ground into its inner cavity. In order to separate the mixture of dust particles and water vapor, the cleaning machine usually uses a separation device.

[0003] Current separation modules, such as the Chinese utility model patent "Vortex Filtration Separation System and Sweeping Robot and Equipment", patent application number ZL201921208546.0 (authorization announcement number CN210612041U), disclose a vortex filtration separation system, including a filter structure with a vortex channel cavity, a dust box structure embedded in the filter structure, a mesh support for connecting the filter structure and the dust box structure, and a HEPA support mounted on the dust box structure; the dust box structure has an installation cavity, a dust chamber communicating with the installation cavity, an air inlet communicating with the installation cavity, and an air outlet communicating with the dust chamber; the mesh support is equipped with a mesh, and the HEPA support is equipped with a HEPA filter; the filter structure is installed in the installation cavity, the vortex channel cavity includes a starting end and an ending end, and a plurality of outlets located between the starting end and the ending end; the starting end of the vortex channel cavity is connected to the air inlet, the outlet of the vortex channel cavity is connected to the dust chamber through the mesh support, and the ending end of the vortex channel cavity is connected to the dust chamber. For example, the applicant's earlier Chinese utility model patent application, "A Separation Module for a Cleaning Machine and a Cleaning Machine," patent number ZL202120900991.4 (authorization announcement number CN215534087U), discloses a separation module, including a shell with an internal cavity having an air inlet and an air outlet. The air outlet is located at the top of the cavity, and its periphery extends downward to form a ring wall. The cavity also includes a drain outlet and a separation component with an internal cavity and vertically arranged... The separator is placed inside the cavity and located on the periphery of the annular wall. An outer chamber communicating with the drain port is formed between the separator and the inner peripheral wall of the housing, and an intermediate chamber is formed between the separator and the outer peripheral wall of the annular wall. A gap is left between a part of the separator and the top wall of the housing to communicate with the outer chamber and the intermediate chamber. At least a part of the connecting wall connecting the separator to the top wall of the housing is located between the air inlet and the gap. An extension wall is provided on the connecting wall, extending away from the air inlet and connecting with the top wall of the housing. The extension wall is located between the air inlet and the gap.

[0004] Although the aforementioned patent achieves dust separation, when water enters the separation module or when there is water inside the separation module, on the one hand, as the water volume at the bottom of the separation box increases, the subsequent centrifugal airflow will also cause the water at the bottom of the separation box to rotate at high speed. During the high-speed rotation of the water, many water droplets will be stirred up on the water surface. These water droplets will be carried by the rotating airflow and re-enter the airflow in the form of water droplets, eventually contacting, wetting and clogging the filter structure, thus affecting the service life of the filter structure. On the other hand, during separation, dust and debris will stick to the top surface and the upper edge of the side walls, creating cleaning dead corners, which can easily produce odors and have limited separation capacity. In addition, the separation component is connected to the bottom of the cavity, which can easily trap debris or entangle hair.

[0005] Therefore, further improvements are needed to the existing separate modules. Summary of the Invention

[0006] The first technical problem to be solved by the present invention is to provide a separation module for a cleaning machine that allows the incoming fluid to flow downwards to contact the water stored in the storage chamber and reduces the probability of the sewage in the storage chamber flowing upwards, in light of the current state of the prior art.

[0007] The second technical problem to be solved by the present invention is to provide a separation module that prevents garbage and sewage from escaping upwards.

[0008] The third technical problem to be solved by the present invention is to provide a separation module that improves separation capability by changing the direction of fluid flow to increase the number of collisions.

[0009] The fourth technical problem to be solved by the present invention is to provide a cleaning machine that separates wet and dry materials.

[0010] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: a separation module for a cleaning machine, comprising:

[0011] The housing has an internal chamber with an air inlet duct and an exhaust port for fluid communication with the fan of the cleaning machine, the air inlet duct having an exhaust port connected to the chamber;

[0012] A separator, located within the chamber, is used at least to separate dust and liquid;

[0013] Its characteristic is that it further includes:

[0014] A pressure plate is disposed circumferentially within the cavity with its surface intersecting the inner peripheral wall of the housing. The starting end of the pressure plate is engaged with the top edge of the air outlet of the air inlet duct, and includes a spiral segment that gradually spirals downward from the starting end along the inner peripheral wall of the housing. The spiral segment surrounds the periphery of the separator.

[0015] The air inlet duct can be located entirely outside the chamber, or at least partially within the chamber. Preferably, at least a portion of the air inlet duct is located within the chamber, serving as a ventilation section, the outlet of which is the air outlet of the air inlet duct. The presence of this ventilation section serves two purposes: firstly, it guides the airflow entering the chamber, and secondly, it blocks water splashes from the bottom of the chamber.

[0016] If there is a gap between the end edge of the pressure plate and the outer wall of the air passage section, garbage can easily get stuck between the pressure plate and the air passage section. To prevent garbage from accumulating and getting stuck, the end edge of the pressure plate is joined to the outer wall of the air passage section. This reduces garbage accumulation, and the mixed airflow entering through the air inlet duct is guided by the pressure plate to the bottom of the chamber, causing the water at the bottom to rotate, thus achieving self-cleaning of the chamber and improving its self-cleaning effect.

[0017] In addition, the edge of the end of the pressure plate is connected to the outer wall of the air passage section, and can be joined to the bottom wall of the air passage section or the side wall of the air passage section.

[0018] To better prevent water splashing from the bottom of the chamber from flowing upwards, the pressure plate is partially located within the inner circumference of the air passage section and is engaged with the wall panel at the corresponding position of the air passage section. In this way, the blocking area formed by the pressure plate and the bottom wall of the air passage section effectively blocks water splashing from the bottom, preventing water from flowing into the subsequent exhaust duct.

[0019] To minimize the agitation of water at the bottom of the chamber and reduce the formation of cleaning dead zones, the bottom wall of the air passage section is flat, and the edge of the end of the pressure plate is flush with the bottom wall of the air passage section. If the pressure plate is lower than the bottom wall of the air passage section, it will increase the impact on the water at the bottom of the chamber, affecting the wet separation effect; if it is higher than the bottom wall of the air passage section, it will create cleaning dead zones, increasing the difficulty of cleaning.

[0020] If the suction is too strong, the airflow will carry larger particles into the chamber. To improve the separation of large particles, the pressure plate can have different positional relationships with the air passage section. Preferably, the pressure plate is partially located below the air passage section and has a first gap between it and the air passage section; or...

[0021] The end edge of the pressure plate is located on the first side of the air passage away from its outlet, and a second gap is left between it and the first side. In this way, the separated particles will fall to the bottom of the chamber through the first gap or the second gap.

[0022] One of the structural forms of the aforementioned pressure plate is that the end edge of the spiral segment is the end edge of the pressure plate.

[0023] The second structural form of the pressure plate mentioned above: the pressure plate further includes an extension section connected to the end edge of the spiral segment, the extension section extends in a horizontal direction, and the end edge of the extension section is the end edge of the pressure plate.

[0024] The third structural form of the pressure plate mentioned above: The pressure plate also includes an extension section connected to the end edge of the spiral segment. The extension section gradually slopes downward or upward along the circumference of the shell, and the end edge of the extension section is the end edge of the pressure plate.

[0025] In order to maintain good separation capability while avoiding excessive impact on the water at the bottom of the chamber, which would cause the water to move upward, preferably, the angle between the extension section and the horizontal plane is α, and the angle α satisfies: 0<α≤10°.

[0026] The pressure plate can be at an acute angle to the inner peripheral wall of the shell, or it can be perpendicular to the inner peripheral wall of the shell. However, from the perspective of reducing the impact on the water at the bottom of the chamber and guiding the airflow rotation, it is preferable that the pressure plate is perpendicular to the inner peripheral wall of the shell, and the outer side of the pressure plate is always connected to the inner peripheral wall of the shell.

[0027] The technical solution adopted by the present invention to solve the second technical problem mentioned above is as follows: at least a portion of the inner periphery of the pressure plate extends upward to form a baffle, and the baffle is arranged adjacent to the air inlet duct.

[0028] To improve separation capability, the exhaust port is located on the top surface of the chamber, and a vertically extending annular component is provided inside the chamber. The pressure plate is located around the annular component, and the annular wall surrounds the exhaust port to form a flow channel connected to the exhaust port. The separation component is located in the flow channel of the annular component, and a gap is left between it and the inner peripheral wall of the annular component to allow air to pass through.

[0029] To prevent debris from getting stuck, the annular wall of the ring component is in contact with the inner circumference of the pressure plate.

[0030] The technical solution adopted by the present invention to solve the third technical problem mentioned above is as follows: the projection of the separating component on the surface where the exhaust port is located, along the fluid flow direction inside the exhaust port, covers the exhaust port.

[0031] In this way, the airflow before reaching the exhaust vent will collide with the annular component, then with the separator, and flow into the exhaust vent after passing through the gap. Thus, the separator and the annular component achieve airflow deflection and separation, causing large particles or heavy waste to settle at the bottom of the chamber, reducing the need for subsequent filter screens and improving the service life of the filter screens.

[0032] Preferably, the bottom opening of the annular component is an air passage opposite to the exhaust port, located below the exhaust port and upstream of the exhaust port along the fluid flow path. The separator covers the air passage along the projection of the fluid flow direction within the air passage onto the surface where the air passage is located. In this way, the fluid flowing in through the vent is blocked by the separator, thus achieving the separation of dust and liquid.

[0033] To prevent debris and hair from getting tangled on the bottom of the annular wall, a first gap is left between the bottom edge of the annular component and the bottom wall of the chamber. This first gap reduces the risk of hair getting tangled on the annular wall and facilitates the outflow of wastewater entering the annular wall to the bottom of the chamber.

[0034] To ensure better water pressure, the air inlet of the annular component is located below the air outlet of the air inlet duct. Thus, the mixed airflow entering through the air outlet of the air inlet duct is guided downwards by the pressure plate towards the water at the bottom of the chamber. Upon contact with the water at the bottom, the water rotates, causing dust and lint in the mixed airflow to be absorbed and separated by the water. The separated gas then flows upwards and exits through the air outlet.

[0035] In order to guide the fluid flowing out of the air outlet of the air inlet duct outward and thereby reduce the agitation of the water at the bottom of the chamber, the outer peripheral wall of the annular member or the inner edge of the pressure plate or the side wall of the air inlet duct adjacent to the annular member has a baffle wall to block the fluid flowing out of the air outlet of the air inlet duct from flowing inward. The baffle wall is arranged adjacent to the air outlet of the air inlet duct.

[0036] There are various structural forms of the baffle, but preferably, the baffle extends downward; or gradually extends from top to bottom away from the air outlet; or extends downward and then continues to extend away from the air outlet. The presence of the baffle separates the airflow when it collides with the baffle and blocks the inward-moving fluid.

[0037] In order to reduce the amount of water flowing into the exhaust duct from the chamber when the sweeper tilts over, the inner peripheral wall of the annular component is provided with a vertically extending baffle, the separating component is provided on the baffle, and the gap is formed between the separating component, the baffle and the annular component.

[0038] To further improve separation capability, at least two baffles are arranged at circumferential intervals, and the separating element is at least partially located within the space enclosed by the baffles. The presence of these baffles can further intercept and block the rotating airflow that has been deflected by the annular element, thereby reducing the rotation path and airflow velocity, achieving further deflection and separation of water particles, and improving separation capability.

[0039] The separating element can be a plate-shaped separating plate or other shapes, but preferably, it is a horizontally arranged separating plate, with its outer periphery fixed relative to the inner edge of the baffle. The baffle also provides fixed support for the separating plate.

[0040] Preferably, both the air inlet and the air outlet are circular, the orthographic projection of the separator on the first horizontal plane along the vertical direction is circular, and the orthographic projection of the baffle on the first horizontal plane along the vertical direction extends in the radial direction of the orthographic projection of the separator.

[0041] One design configuration for the baffle is as follows: the top surface of the baffle contacts the bottom surface of the wall panel where the exhaust vent is located, and the bottom surface of the baffle contacts the bottom surface of the annular component. This improves separation capability and reduces the water flow rate splashed onto the top surface of the chamber.

[0042] The second design of the baffle: a second gap is left between the top surface of the baffle and the bottom surface of the wall panel where the exhaust vent is located.

[0043] There are various structural forms of the annular component, but preferably, the annular wall of the component includes a first contracting section that gradually narrows inward from top to bottom, and the baffle is at least partially located on the inner wall of the first contracting section. In this way, the air velocity entering the first contracting section gradually decreases, allowing the waste and sewage sucked into the annular component to fall back down by gravity when the machine stops or even during cleaning. Furthermore, in this state, the gap between the separating plate and the inner wall of the annular component gradually narrows along the fluid flow path, resulting in a high airflow velocity and making it easier for the airflow to flow upward.

[0044] Specifically, the annular component's ring wall further includes a connecting section that connects to the top edge of the first contraction section. This connecting section is either a vertically extending section or a second contraction section that gradually contracts inwards from top to bottom. Thus, the cross-sectional area of ​​the airflow entering the annular component's flow channel gradually increases, increasing the amount of airflow passing through after separation, while gradually decreasing the wind speed.

[0045] Because airflow moves from a high-pressure area to a low-pressure area along the shortest path, and the intake duct surrounds the chamber tangentially, the shortest path of the airflow is along the inner wall of the intake duct. Driven by this airflow along the inner wall, the wastewater drawn into the intake duct also flows along its inner wall. When it reaches the outlet of the intake duct, it is further driven by the centripetal airflow towards the center. Some of this water may directly enter the annular component, while some may collide with and adhere to the outer bottom surface of the annular component. Ultimately, the wastewater is further impacted by the airflow... The water flows down the annular component, but the annular component can only remove water droplets carried by the airflow. It is ineffective against water flowing along the wall. As more and more water enters the annular component, some of it will enter the exhaust duct through the exhaust port. To reduce water entering the exhaust port, one design feature is an upward-extending guide rib on the inner bottom wall of the air inlet duct. This guide rib extends along the length of the air inlet duct, and its first end, away from the air outlet, connects to the inner wall of the air inlet duct. The guide rib directs the airflow along the inner wall outward, reducing the water flow entering the annular component's channel.

[0046] Preferably, along the inward and outward directions, the second end of the guide rib adjacent to the air outlet of the air inlet duct is arranged at a position near the center of the air inlet duct.

[0047] To reduce water flow into the exhaust vent, a second design approach is employed: a baffle plate extending circumferentially along the inner wall of the chamber, located below the pressure plate, is positioned adjacent to the exhaust vent of the air inlet duct and downstream of the exhaust vent along the fluid flow path. The baffle plate not only blocks the water flow but also directs it to the side wall of the chamber, thereby reducing the water flow entering the exhaust vent. Simultaneously, it buffers the initial impact of the airflow against the water at the bottom of the chamber, allowing the airflow to fully diffuse within the chamber before contacting the water surface, significantly reducing the impact.

[0048] To allow for better swirling and flow of air entering the chamber, the cross-section of the chamber is circular or elliptical.

[0049] Preferably, the air inlet duct further includes an air outlet section located outside the chamber and connected to the air passage section. The air outlet section is located inside the housing and on the outer periphery of the air passage section, and the inner edge of the bottom plate of the air outlet section is connected to the outer edge of the bottom plate of the air passage section.

[0050] Specifically, the air inlet duct supplies air tangentially into the chamber, and the air inlet duct also includes an air intake section located outside the chamber and connected to the air passage section. Along the fluid flow path, the air intake section is located upstream of the air passage section and the air flow section, and the top edge of the inlet of the air intake section is below the top edge of the outlet of the air intake section, and the bottom edge of the inlet of the air intake section is below the bottom edge of the outlet of the air intake section.

[0051] To facilitate the installation of the pressure plate and the separation component, the housing includes a bottom shell with an open top and a cover plate covering the top opening of the bottom shell. The bottom shell and the cover plate enclose the cavity. The cover plate has an exhaust channel that communicates with the exhaust port. The top plate of the air inlet section and the air outlet section is a part of the cover plate.

[0052] To prevent garbage and sewage entering through the air inlet duct from escaping above the pressure plate, the inner edge of the bottom plate of the air passage section extends upward to form a baffle.

[0053] Preferably, the orthographic projection of the farthest point from the inlet of the air passage section to its outlet on the first horizontal plane is A; the orthographic projection of the center line of the chamber on the first horizontal plane is B; the orthographic projection of the closest point from the end edge of the pressure plate to the inlet of the air passage section on the first horizontal plane is D; the orthographic projection of the farthest point from the outlet of the air passage section to its inlet on the first horizontal plane is C; the angle between the line DB connecting D and B and the line CB connecting C and B is β, and the angle β satisfies: 0°≤β≤60°; the angle between the line CB and the line AB is γ, and the angle θ satisfies: 45°≤θ≤90°.

[0054] The technical solution adopted by the present invention to solve the fourth technical problem mentioned above is: a cleaning machine having the separation module, characterized in that: it further includes a fan and a filter element, the filter element is disposed in the housing, and the exhaust port, filter element and fan are arranged in sequence along the fluid flow path.

[0055] The cleaning machine can be a sweeper or a floor scrubber, but preferably, the cleaning machine is a sweeper.

[0056] Compared with the prior art, the advantages of the present invention are as follows: the pressure plate of the separation module has a spiral segment that gradually spirals downward along the circumference of the side wall of the chamber. The starting end of the spiral segment is engaged with the top edge of the air outlet of the air inlet pipe. The existence of the spiral segment engaged with the top edge of the air outlet of the air inlet pipe has the following effects: on the one hand, it receives the sewage mixed airflow / dust entering from the end of the air inlet pipe and makes the mixed airflow rotate continuously along the inner circumferential wall of the chamber, so that the mixed airflow rushes to the bottom of the chamber and drives the water to rotate, thereby achieving self-cleaning of the inner circumferential wall of the entire chamber. At the same time, it is convenient to make the airflow fully contact the water at the bottom by suppressing the airflow when the cleaning machine is in dry mode, and rely on the water film to adsorb and separate the dust in the air. On the other hand, it suppresses the water splashing at the bottom of the chamber, thereby reducing the degree of agitation of the water at the bottom, reducing the probability of water flowing into the exhaust port, preventing water from entering, reducing the water flow contacting the subsequent filter and fan, and improving the service life of the fan and filter. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of the separation module in Embodiment 1;

[0058] Figure 2 for Figure 1 Schematic diagram of the middle bottom shell;

[0059] Figure 3 for Figure 1 Schematic diagram of the assembly structure of the middle ring component and the separating component;

[0060] Figure 4 for Figure 1 A longitudinal sectional view;

[0061] Figure 5 for Figure 1 A cross-sectional view;

[0062] Figure 6 for Figure 1 Another angle of the horizontal cross-section;

[0063] Figure 7 This is a partial structural diagram of the sweeper in Embodiment 1;

[0064] Figure 8 This is a cross-sectional view of the separation module in Embodiment 2;

[0065] Figure 9 This is a cross-sectional view of the separation module in Embodiment 3;

[0066] Figure 10 This is a cross-sectional view of the separation module in Embodiment 4;

[0067] Figure 11 for Figure 10A schematic diagram of the assembly structure of the ring-shaped component and the separable component;

[0068] Figure 12 for Figure 11 A sectional view;

[0069] Figure 13 This is a schematic diagram of the bottom shell structure of Embodiment 5;

[0070] Figure 14 This is a schematic diagram of the bottom shell structure of Embodiment 6;

[0071] Figure 15 for Figure 14 A cross-sectional view;

[0072] Figure 16 This is a cross-sectional view of the bottom shell of Embodiment 7;

[0073] Figure 17 This is a schematic diagram of the bottom shell structure of Embodiment 7;

[0074] Figure 18 This is a schematic diagram of the assembly structure of the annular component and the separable component in Embodiment 8;

[0075] Figure 19 This is a longitudinal sectional view of the separation module in Embodiment 9;

[0076] Figure 20 This is a cross-sectional view of the separation module in Embodiment 9;

[0077] Figure 21 This is a three-dimensional exploded view of the separation module in Embodiment 9;

[0078] Figure 22 This is a schematic diagram showing the positional relationship between the pressure plate and the air passage section in Embodiment 9.

[0079] Figure 23 This is another schematic diagram showing the positional relationship between the pressure plate and the air passage section in Embodiment 9. Detailed Implementation

[0080] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0081] Example 1:

[0082] like Figures 1 to 7 As shown, this is the first preferred embodiment of the present invention. Figure 7As shown, the cleaning machine in this embodiment is a sweeper. The sweeper includes a cleaning module 6 for cleaning the floor, a separation structure, a filter element 9, and a fan 8. The specific structure of the cleaning module in this embodiment adopts a structure from the prior art, which will not be described in detail here. Along the fluid flow path, the separation structure is located between the cleaning module 6 and the fan 8, with the cleaning module 6 located upstream of the separation structure.

[0083] like Figures 2 to 6 As shown, the separation structure of this embodiment includes a shell 1, an annular component, a separation component, and a pressure plate 4. The aforementioned shell 1 includes a bottom shell 1a with a top opening and a cover plate 1b covering the top opening of the bottom shell 1a. The bottom shell 1a and the cover plate 1b enclose a chamber 10. The aforementioned bottom shell 1a has a circular cross-section; alternatively, it can also have an elliptical cross-section. The aforementioned cover plate 1b has an exhaust channel 14 inside, and the bottom of the cover plate 1b has an exhaust port 101 connecting the chamber 10 and the exhaust channel 14. The exhaust port 101 is located on the top of the chamber 10. When the sweeper tilts, sewage and garbage in the lower chamber are less likely to flow out from the exhaust port, reducing the probability that sewage and garbage will come into contact with the filter and the fan after being discharged through the exhaust port. The aforementioned filter 9 is a filter located in the exhaust channel 14. Along the fluid flow path, the exhaust port 101, the filter 9, and the fan 8 are arranged in sequence. The chamber 10 of the separation structure is connected to the cleaning module 6 via the air inlet duct 11, and the exhaust port 101 of the separation structure is in fluid communication with the inlet of the fan 8. Under the action of the fan 8, a negative pressure is formed in the cleaning module 6 and the separation structure, thereby drawing dust, water, particles and other debris into the cleaning module through the dust suction port. Subsequently, the gas separated by the separation structure is discharged, and the separated wastewater is stored in the chamber 10 of the separation structure.

[0084] The aforementioned air inlet duct 11 supplies air tangentially into the chamber 10 and includes an air inlet section 112, an air outlet section 110, and an air passage section 111. The air inlet duct 11 has an air outlet 1111 that communicates with the chamber 10. The air inlet section 112 is located outside the chamber 10 and upstream of the air outlet section 110 and the air passage section 111, along the fluid flow path. In this embodiment, the top edge of the inlet of the air inlet section 112 is below the top edge of its outlet, and the bottom edge of its inlet is below the bottom edge of its outlet, meaning the air inlet section 112 gradually slopes upwards along the fluid flow path. The aforementioned air passage section 111 is located inside the chamber 10, and its outlet is the air outlet 1111 of the air inlet duct 11. The air vent 110 is located inside the housing 1, outside the chamber 10, and on the outer periphery of the air passage section 111. In this embodiment, the inner edge of the bottom plate of the air vent 110 is connected to the outer edge of the bottom plate of the air passage section 111, thus achieving communication between the air vent 110 and the air passage section 111. Furthermore, a baffle 15 extends upward from the inner edge of the bottom plate (i.e., the bottom wall) of the air passage section 111. The bottom wall of the aforementioned air passage section 111 is straight.

[0085] like Figure 4 As shown, the wall panel where the exhaust vent 101 is located is arranged horizontally, and the annular member 13 is ring-shaped and vertically arranged inside the chamber 10. The annular member 13 surrounds the outer periphery of the exhaust vent 101 and forms a flow channel 130 communicating with the exhaust vent 101. A first gap 104 is left between the bottom edge of the annular member 13 and the bottom wall of the chamber 10. In this embodiment, in order to make the air velocity distribution in the chamber uniform, the annular member 13 is located in the upper part of the chamber 10 near the center, and the aforementioned air passage section 111 is located on the periphery of the annular member 13.

[0086] like Figure 6As shown, along the fluid flow path, the flow channel 130 is located between the air inlet duct 14 and the air outlet duct 14, with the air outlet duct 14 located downstream of the flow channel 130. The annular wall of the aforementioned annular member 13 includes, from top to bottom, a connecting section and a second contracting section 13b. The connecting section is a first contracting section 13a that gradually contracts inward from top to bottom, and the second contracting section 13b gradually contracts inward from the lower circumference of the first contracting section 13a. The slope of the first contracting section 13a is greater than the slope of the second contracting section 13b. In addition, the connecting section can also be a vertical section extending vertically upward from the upper circumference of the second contracting section 13b. Furthermore, this vertical section can be a vertically upward extending section. The lower end of the second contraction section 13b is open as an air passage 1301, which is arranged opposite to the exhaust port 101. Along the fluid flow path, the air passage 1301 is located upstream of the exhaust port 101 and below it, and below the air outlet 1111 of the air inlet duct 11. Water on the inner wall of the annular member can flow along the inner wall of the annular member to the bottom of the chamber. In this embodiment, both the air passage 1301 and the exhaust port 101 are circular. In addition, the outer peripheral wall of the annular member 13 has a baffle 132 to block the fluid flowing out of the air outlet 1111 of the air inlet duct 11 from flowing inward. The baffle 132 is arranged adjacent to the air outlet 1111 of the air inlet duct 11. In this embodiment, the baffle 132 extends downward and is located at the connection between the first contraction section 13a and the second contraction section 13b. Furthermore, the baffle can also be located on the inner edge of the pressure plate 4, or on the inner edge of the air inlet duct 11.

[0087] The separator is used to separate at least dust and liquid, and is a separator plate 5 located in the flow channel 130 of the annular member 13. The separator plate 5 is arranged laterally and is plate-shaped. To support the separator plate 5 and improve its separation capacity, such as... Figures 3 to 6 As shown, a vertically extending baffle 131 is provided on the inner peripheral wall of the annular component 13. The top surface of the baffle 131 contacts the bottom surface of the wall panel 15 where the exhaust port 101 is located, and the bottom surface of the baffle 131 contacts the bottom surface of the annular component. Specifically, the bottom surface of the baffle 131 contacts the periphery of the air outlet 1301. There are at least two baffles 131; in this embodiment, there are four baffles 131. Alternatively, three, four, or even six baffles can be used. The orthographic projection of the separation plate 5 along the vertical direction on the first horizontal plane is circular, and the orthographic projection of the baffle 131 along the vertical direction on the first horizontal plane extends radially along the orthographic projection of the separation plate 5. Figure 4As shown, the separation plate 5 is disposed on the baffle 131, and the separation plate 5 is located within the space enclosed by the baffles 131. Specifically, the outer periphery of the separation plate 5 is relatively fixed to the inner edge of the baffle 131, thus the baffles provide support and fixation for the separation plate. In addition, all the baffles 131 are arranged circumferentially at intervals on the inner wall of the second contraction section 13b. A gap 7 for air passage is formed between the baffles 131, the inner peripheral wall of the annular member 13, and the outer wall of the separation plate 5. Along the fluid flow path, the gap 7 is located between the air outlet 1301 and the exhaust outlet 101. Thus, the separated airflow collides with the separation plate and flows upward through the gap 7. When passing through the gap, the airflow is deflected by the corresponding baffle, which improves the separation capability of the airflow. To prevent liquid from entering the gap 7, a baffle 51 extends downward from the outer periphery of the separator 5. Thus, water droplets blocked by the separator 5 slide down to the outer edge of the separator 5 under the influence of airflow and are blocked by the baffle 51, preventing the airflow from being carried back up and entering the gap 7. Additionally, a notch 1311 is provided on the top surface of the baffle 131, and the baffle 51 is partially located within the corresponding notch 1311.

[0088] like Figure 4 As shown, the projection of the separation plate 5 onto the surface of the exhaust 101 along the fluid flow direction (i.e., the vertical direction) within the exhaust 101 covers the exhaust 101. The projection of the separation plate 5 onto the surface of the air passage 1301 along the fluid flow direction within the air passage 1301 covers the air passage 1301. In this embodiment, the opening area of ​​the air passage 1301 is larger than the opening area of ​​the exhaust 101.

[0089] like Figures 2 to 6 As shown, the pressure plate 4 is disposed within the chamber 10, and partially located within the inner perimeter of the air passage section 111. The aforementioned pressure plate 4 is disposed circumferentially within the chamber 10 with its plate surface intersecting the inner peripheral wall of the housing 1. In this embodiment, the pressure plate 4 is perpendicular to the inner peripheral wall of the housing 1. In this embodiment, the plate surface of the pressure plate 4 is actually the top or bottom surface of the pressure plate. The starting end of the aforementioned pressure plate 4 is engaged with the top edge 1110 of the air outlet 1111 of the air inlet duct 11, and includes a spiral segment 41 that gradually spirals downward from the starting end of the pressure plate 4 along the circumferential direction of the inner peripheral wall of the housing 1. The spiral segment 41 surrounds the periphery of the separating member, specifically, the spiral segment 41 surrounds the periphery of the aforementioned annular member 13. The ending edge 400 of the aforementioned pressure plate 4 is the ending edge of the spiral segment 41. In addition, the outer edge of the pressure plate 4 is always connected to the inner peripheral wall of the housing 1. Furthermore, as Figure 4 and Figure 6 As shown, the annular wall of the annular member 13 is in contact with the inner periphery of the pressure plate 4. Specifically, at least a portion of the inner periphery of the pressure plate 4 extends upward to form a baffle 43. The baffle 43 is arranged adjacent to the air inlet duct 11, and the baffle 43 is in contact with the corresponding position of the outer wall surface of the annular member 13.

[0090] Furthermore, the end edge 400 of the pressure plate 4 engages with the outer wall of the air passage section 111. This engagement, as described in the claims and specification, can be either a mechanical connection where the two are physically close together without being mechanically connected. Specifically, the end edge 400 of the pressure plate 4 engages with the wall panel at the corresponding position of the air passage section 111. In this embodiment, the end edge 400 of the pressure plate 4 engages with the baffle 15 of the air passage section 111 of the air inlet duct 11. Alternatively, it can engage with the bottom wall of the air passage section 111; any engagement with the air passage section 111 of the air inlet duct 11 is sufficient.

[0091] like Figure 5 As shown, the orthographic projection of the farthest point from the inlet of the aforementioned air passage 111 to its outlet on the first horizontal plane is A; the orthographic projection of the centerline of chamber 10 on the first horizontal plane is B; the orthographic projection of the closest point from the end edge 400 of the pressure plate 4 to the inlet of the air passage 111 on the first horizontal plane is D; the orthographic projection of the farthest point from the outlet of the air passage 111 to its inlet on the first horizontal plane is C; the line connecting D and B is DB; the line connecting C and B is CB; the line connecting A and B is AB; the angle between lines DB and CB is β, satisfying 0°≤β≤60°; the angle between lines CB and AB is θ, satisfying 45°≤θ≤90°. Point D can be located on the side of point C away from A, or on the side of point C adjacent to A. In this embodiment, β = 45°, θ = 90°, and the end edge 400 of the pressure plate is flush with the bottom wall of the air passage section 111. As the airflow ascends and circles along the air inlet section, it changes from direct current to spiral air. The air passage section of the air inlet duct is relatively long, and the fluid that finally enters the chamber is basically straightened again, reducing the degree of agitation on the water stored at the bottom of the chamber.

[0092] In this embodiment, the presence of the spiral section in the pressure plate serves two purposes. First, it guides the mixed airflow entering through the air inlet duct to the bottom of the chamber, causing the stored water to rotate and thus achieving self-cleaning of the chamber. Second, it suppresses the water splashing at the bottom of the chamber, reducing the agitation of the stored water and decreasing the probability of water entering the exhaust vent, thus preventing water from entering and reducing the contact of water with subsequent filters and fans, thereby improving the service life of the fans and filters.

[0093] Furthermore, in dry mode, the airflow carrying dust, lint, and other debris enters the chamber through the inlet duct. Within the chamber, it spirals, gradually rotating from the side walls to the central annular air vent. During this process, the water inside the chamber is also carried by the airflow, creating a rotating motion. The rotating airflow makes full contact with the water at the bottom of the chamber, causing the dust and lint to be absorbed and separated by the water. Ultimately, only a small amount of fine dust remains, following the airflow into the exhaust duct. However, since the water entering the chamber during the cleaning process is dirty water, when there is no pressure... When the plate is present, the dirty water splashes onto the top surface of the chamber, leaving the dirt on the top surface as well. Especially during dry separation, a lot of dust will stick to the top surface and the upper edge of the side wall. In this embodiment, the presence of the spiral section not only retains the function of pressing water splashes, but also separates the top surface and the upper edge of the side wall from the dirt and garbage. Furthermore, through the spiral downward guidance of the spiral section, the airflow containing dirt entering the chamber is pressed as far as possible towards the bottom water surface, so that the mixed airflow and the water film can come into full contact. The water film adsorbs and separates the dust in the air, thereby improving the dry separation efficiency.

[0094] The specification and claims of this invention use terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for ease of explanation and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0095] The term "fluid connectivity" as used in this invention refers to the spatial relationship between two components or parts (hereinafter referred to as the first part and the second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. This third party can be a fluid channel such as a pipe, channel, conduit, guide, hole, or groove, or a chamber or combination thereof that allows fluid to flow through.

[0096] Example 2:

[0097] like Figure 8The image shows the second preferred embodiment of the present invention. This embodiment differs from Embodiment 1 in the following ways: 1. The structure of the baffle 132 is different; specifically, the baffle 132 gradually slopes outwards (away from the air outlet) from top to bottom; 2. There is one baffle 131, which is partially connected to the outer edge of the separation plate 5. A second gap is left between the top surface of the aforementioned baffle 131 and the bottom surface of the wall panel 15 where the exhaust vent 101 is located; specifically, the top surface of the baffle 131 is flush with the top surface of the separation plate 5.

[0098] Example 3:

[0099] like Figure 9 The following is a third preferred embodiment of the present invention. The difference between this embodiment and the above-described embodiment 2 is that: 1. The structure of the annular wall of the annular member is different. Specifically, the annular wall of the annular member gradually contracts inward from top to bottom, that is, the annular wall only includes the second contraction section 13b; 2. There is no baffle wall.

[0100] Example 4:

[0101] like Figures 10 to 12 The following is a fourth preferred embodiment of the present invention. This embodiment differs from Embodiment 1 in the following ways: 1. There is one baffle 131, which is partially connected to the outer edge of the separating plate 5. A second gap is left between the top surface of the aforementioned baffle 131 and the bottom surface of the wall panel 15 where the exhaust port 101 is located. Specifically, the top surface of the baffle 131 is flush with the top surface of the separating plate 5. 2. To allow liquid on the separating element to flow down and prevent accumulation on the separating element, a gap is left between the bottom of the separating plate 5 and the top edge of the baffle 131 for liquid to pass through. An opening 1310 communicating with the gap is provided in the annular wall. The opening 1310 is located inside the baffle 131. In this embodiment, the opening 1310 is opened on the second contraction section; 3. The baffle wall 132 extends downwards, or the bottom edge of the baffle wall 132 extends outwards to form an extension section 1321. 4. As... Figure 10 As shown, the annular wall of the ring member 13 and the inner periphery of the pressure plate 4 are separated by a third gap. Specifically, the inner periphery of the pressure plate 4 is not provided with a retaining edge 43.

[0102] Example 5:

[0103] like Figure 13 The image shows the fifth preferred embodiment of the present invention. This embodiment differs from Embodiment 1 in that: the inner bottom wall of the air passage section 111 is provided with an upwardly extending guide rib 16, which extends along the length of the air passage section 111. One end of the guide rib 16 away from the air outlet 1111 of the air inlet duct 11 is connected to the inner side wall of the air inlet duct 11.

[0104] Example 6:

[0105] like Figure 14 and Figure 15 The image shows the sixth preferred embodiment of the present invention. This embodiment differs from Embodiment 1 in the following ways: 1. The inner bottom wall of the air passage section 111 is provided with upwardly extending guide ribs 16, which extend along the length of the air passage section 111; 2. θ = 45°, β = 0°. At this time, the edge of the end of the pressure plate is located on the edge of the outlet of the air passage section 11. At this time, the garbage entering from the air inlet, especially large particles, falls directly to the bottom of the chamber under gravity, avoiding garbage blockage and reducing the agitation of the water at the bottom; 3. The pressure plate 4 also includes an extension section 42 connected to the end edge of the spiral section 41. The extension section 42 extends horizontally, and the end edge 400 of the pressure plate 4 is the end edge of the extension section 42.

[0106] Example 7:

[0107] like Figure 16 and Figure 17 As shown, this is the seventh preferred embodiment of the present invention. This embodiment differs from embodiment 6 in that it lacks guide ribs; instead, a baffle plate 17 extending circumferentially along the chamber 10 is provided on the inner peripheral wall of the chamber 10 below the pressure plate 4. The baffle plate 17 is arranged adjacent to the air outlet 1111 of the air inlet duct 11 and is located downstream of the air outlet 1111 along the fluid flow path. Furthermore, as... Figure 17 As shown, the pressure plate 4 also includes an extension section 42 connected to the end edge of the spiral section 41. The extension section 42 gradually slopes downward or upward along the circumference of the housing 1. The angle between the extension section 42 and the horizontal plane is α, and the angle α satisfies: 0 < α ≤ 10°. The end edge 400 of the pressure plate 4 is the end edge of the extension section 42.

[0108] Example 8:

[0109] like Figure 18 The image shows the eighth preferred embodiment of the present invention. This embodiment differs from Embodiment 1 in that the specific structure of the baffles is different; there are three baffles 131, arranged radially around the separation plate 5. Each baffle 131 extends partially along the circumference of the separation plate 5, with the remaining portion located on the periphery of the separation plate 5.

[0110] Example 9:

[0111] like Figures 19 to 23The following is a ninth preferred embodiment of the present invention. This embodiment differs from Embodiment 1 in that: 1. There is no annular component, and the structure of the separating component is different. Specifically, 2. The aforementioned separating component includes a vertically extending annular plate 21 with a C-shaped cross-section and a bottom plate 22 connected to the bottom edge of the annular plate 21 and sealing the bottom opening of the annular plate 21. The bottom plate 22 is arranged laterally, and a first gap 104 is left between the bottom plate 22 and the bottom wall of the chamber 10. The aforementioned bottom plate 22 extends laterally outward along its side edge located on the side of the opening of the annular plate 21 to form an extension plate 24. The annular plate 21 surrounds the periphery of the exhaust port 101, and a vent 23 for fluid passage is formed between the annular plate 21 and the bottom plate 22. Along the fluid flow path, the vent 23 is located upstream of the exhaust port 101. In this embodiment, the projection of the bottom plate 22 onto the surface of the exhaust port 101 along the fluid flow direction within the exhaust port 101 covers the exhaust port 101. Additionally, as... Figure 19 As shown, the orthographic projections of the two sides of the annular plate 21 onto the first plane along the vertical direction are E and F, respectively. The orthographic projection of the center line of the annular plate 21 onto the first plane along the vertical direction is O. The included angle formed between the connecting lines OE and OF is γ, and the included angle γ satisfies: 60°≤γ≤180°.

[0112] 3. In this embodiment, the end edge of the pressure plate 4 is the end edge 400 of the spiral section 41, and the end edge of the pressure plate 4 is located below the bottom plate 22. In the vertical direction, the height of the end edge of the pressure plate 4 is lower than the height of the outlet of the air inlet duct 11.

[0113] 4. A gap is left between the end edge 400 of the pressure plate 4 and the air passage section 111 of the air inlet duct 11. Specifically, as shown... Figure 21 and Figure 22 As shown, the end edge 400 of the pressure plate 4 is located on the first side of the air passage section 111 away from its outlet, and a second gap 47 is left between it and the first side. Alternatively, a method such as... Figure 23 As shown, the pressure plate 4 is partially located below the air passage section 111, with a first gap 46 between it and the air passage section 111.

[0114] 5. The projection of the furthest point from the inlet of the aforementioned air passage 111 to the outlet of the air inlet duct 11 on the first horizontal plane is A; the projection of the centerline of chamber 10 on the second horizontal plane is B; the projection of the closest point from the end edge of pressure plate 4 to the inlet of air passage 111 on the first horizontal plane is D; the angle between line AB and line DB is λ, which satisfies: 0°≤λ≤90°. Points O and H coincide. Figure 20As shown, a gap 105 is left between the inner edge of the pressure plate 4 and the outermost edge of the separating member 2, that is, the aforementioned gap 105 is left between the corresponding position of the outer edge of the extension plate 24 and the inner edge of the pressure plate 4. In addition, the extension plate 24 can be used to partially cover the pressure plate 4.

Claims

1. A separation module for a cleaning machine, comprising: The housing (1) has a chamber (10) inside, which has an air inlet duct (11) and an exhaust port (101) for fluid communication with the fan (8) of the cleaning machine, the air inlet duct (11) having an air outlet (1111) connected to the chamber (10). A separator, located within the chamber (10), is used at least to separate dust and liquid; Its features are, It also includes: The pressure plate (4) is disposed circumferentially in the chamber (10) with its plate surface intersecting the inner peripheral wall of the housing (1). The starting end of the pressure plate (4) is engaged with the top edge (1110) of the air outlet (1111) of the air inlet pipe (11), and includes a spiral segment (41) that gradually spirals downward from the starting end along the inner peripheral wall of the housing (1). The spiral segment (41) surrounds the periphery of the separator. The air inlet duct (11) is located at least partially within the chamber (10) and serves as an air passage section (111), the outlet of which is the air outlet (1111) of the air inlet duct (11). The exhaust port (101) is located on the top surface of the chamber (10). A vertically extending annular member (13) is provided inside the chamber (10). The pressure plate (4) is located on the periphery of the annular member (13). The annular wall of the annular member (13) surrounds the outer periphery of the exhaust port (101) to form a flow channel (130) connected to the exhaust port (101). The separating member is located in the flow channel (130) of the annular member (13) and a gap (7) is left between it and the inner peripheral wall of the annular member (13) for air to pass through.

2. The separation module according to claim 1, characterized in that: The end edge (400) of the pressure plate (4) is engaged with the outer wall of the air passage section (111).

3. The separation module according to claim 2, characterized in that: The pressure plate (4) is partially located within the inner perimeter of the air passage section (111), and the end edge (400) of the pressure plate (4) is engaged with the wall panel at the corresponding position of the air passage section (111).

4. The separation module according to claim 3, characterized in that: The bottom wall of the air passage section (111) is flat, and the end edge (400) of the pressure plate is flush with the bottom wall of the air passage section (111).

5. The separation module according to claim 1, characterized in that: The pressure plate (4) is partially located below the air passage section (111) and has a first gap (46) between it and the air passage section (111); Alternatively, the end edge (400) of the pressure plate (4) is located on the first side of the air passage (111) away from its outlet, and a second gap (47) is left between it and the first side.

6. The separation module according to claim 1, characterized in that: The end edge of the spiral segment (41) is the end edge (400) of the pressure plate (4).

7. The separation module according to claim 1, characterized in that: The pressure plate (4) also includes an extension section (42) connected to the end edge of the spiral section (41). The extension section (42) extends in a horizontal direction, and the end edge of the extension section (42) is the end edge (400) of the pressure plate (4).

8. The separation module according to claim 1, characterized in that: The pressure plate (4) also includes an extension section (42) connected to the end edge of the spiral section (41). The extension section (42) gradually slopes downward or upward along the circumference of the housing (1), and the end edge of the extension section (42) is the end edge (400) of the pressure plate (4).

9. The separation module according to claim 8, characterized in that: The angle between the extension segment (42) and the horizontal plane is α, and the angle α satisfies: 0<α≤10°.

10. The separation module according to claim 1, characterized in that: The pressure plate (4) is perpendicular to the inner peripheral wall of the housing (1), and the outer side of the pressure plate (4) is always connected to the inner peripheral wall of the housing (1).

11. The separation module according to claim 1, characterized in that: At least a portion of the inner periphery of the pressure plate (4) extends upward to form a baffle (43), which is arranged adjacent to the air inlet duct (11).

12. The separation module according to claim 1, characterized in that: The annular wall of the ring member (13) is in contact with the inner periphery of the pressure plate (4).

13. The separation module according to claim 1, characterized in that: The separation element covers the exhaust port (101) by projecting its projection onto the surface of the exhaust port (101) along the direction of fluid flow within the exhaust port (101).

14. The separation module according to claim 1, characterized in that: The bottom opening of the annular component (13) is an air passage (1301) opposite to the exhaust port (101). The air passage (1301) is located below the exhaust port (101). Along the fluid flow path, the air passage (1301) is located upstream of the exhaust port (101). The separation component covers the air passage (1301) along the projection of the fluid flow direction in the air passage (1301) onto the surface where the air passage (1301) is located.

15. The separation module according to claim 11, characterized in that: A first gap (104) is left between the bottom edge of the annular component (13) and the bottom wall of the chamber (10).

16. The separation module according to claim 14, characterized in that: The air inlet (1301) of the annular component (13) is located below the air outlet (1111) of the air inlet duct (11).

17. The separation module according to claim 14, characterized in that: The outer peripheral wall of the annular member (13) or the inner edge of the pressure plate (4) or the wall plate of the air inlet duct (11) adjacent to the annular member (13) has a baffle (132) to block the fluid flowing out through the air outlet (1111) of the air inlet duct (11) from flowing inward. The baffle (132) is arranged adjacent to the air outlet (1111) of the air inlet duct (11).

18. The separation module according to claim 17, characterized in that: The baffle (132) extends downward; or gradually extends from top to bottom in a direction away from the air vent (1301); or extends downward and then extends in a direction away from the air vent (1301).

19. The separation module according to claim 18, characterized in that: The inner peripheral wall of the annular member (13) is provided with a vertically extending baffle (131), the separating member is provided on the baffle (131), and the gap (7) is formed between the separating member, the baffle (131) and the annular member (13).

20. The separation module according to claim 19, characterized in that: There are at least two baffles (131) arranged at circumferential intervals, and the separator is at least partially located within the space enclosed by each of the baffles (131).

21. The separation module according to claim 19, characterized in that: The separating element is a horizontally arranged separating plate (5), and the outer periphery of the separating plate (5) is fixed relative to the inner edge of the baffle (131).

22. The separation module according to claim 19, characterized in that: The air inlet (1301) and the air outlet (101) are both circular. The orthographic projection of the separation component on the first horizontal plane along the vertical direction is circular. The orthographic projection of the baffle (131) on the first horizontal plane along the vertical direction extends along the radial direction of the orthographic projection of the separation component.

23. The separation module according to claim 19, characterized in that: The top surface of the baffle (131) is in contact with the bottom surface of the wall panel where the exhaust port (101) is located, and the bottom surface of the baffle (131) is in contact with the bottom surface of the annular component (13); or, a second gap is left between the top surface of the baffle (131) and the bottom surface of the wall panel where the exhaust port (101) is located.

24. The separation module according to claim 19, characterized in that: The annular component (13) has a first contraction section (13b) that gradually contracts inward from top to bottom, and the baffle (131) is at least partially located on the inner wall of the first contraction section (13b).

25. The separation module according to claim 24, characterized in that: The annular component (13) also includes a connecting section that connects to the top edge of the first contraction section (13b). The connecting section is either a vertically extending vertical section or a second contraction section (13a) that gradually contracts inward from top to bottom.

26. The separation module according to claim 1, characterized in that: The inner bottom wall of the air inlet duct (11) is provided with an upwardly extending guide rib (16). The guide rib (16) extends along the length of the air inlet duct (11), and the first end of the guide rib (16) away from the air outlet of the air inlet duct (11) is connected to the inner side wall of the air inlet duct (11).

27. The separation module according to claim 26, characterized in that: Along the inside and outside direction, the second end of the guide rib (16) near the air outlet of the air inlet duct (11) is arranged at a position near the center of the air inlet duct.

28. The separation module according to claim 1, characterized in that: The inner peripheral wall of the chamber (10) is provided with a baffle plate (17) extending circumferentially along the chamber (10) below the pressure plate (4). The baffle plate (17) is arranged adjacent to the air outlet (1111) of the air inlet duct (11) and is located downstream of the air outlet (1111) of the air inlet duct (11) along the fluid flow path.

29. The separation module according to any one of claims 1 to 28, characterized in that: The cross-section of the chamber (10) is circular or elliptical.

30. The separation module according to claim 29, characterized in that: The air inlet duct (11) also includes an air outlet section (110) located outside the chamber (10) and connected to the air outlet section (111). The air outlet section (110) is located inside the housing (1) and on the outer periphery of the air outlet section (111). The inner edge of the bottom plate of the air outlet section (110) is connected to the outer edge of the bottom plate of the air outlet section (111).

31. The separation module according to claim 30, characterized in that: The air inlet duct (11) supplies air tangentially into the chamber (10), and the air inlet duct (11) also includes an air inlet section (112) located outside the chamber (10) and connected to the air passage section (111). Along the fluid flow path, the air inlet section (112) is located upstream of the air passage section (110) and the air passage section (111), and the top edge of the inlet of the air inlet section (112) is below the top edge of the outlet of the air inlet section (112), and the bottom edge of the inlet of the air inlet section (112) is below the bottom edge of the outlet of the air inlet section (112).

32. The separation module according to claim 31, characterized in that: The housing (1) includes a bottom shell (1a) with an open top and a cover plate (1b) covering the top opening of the bottom shell (1a). The bottom shell (1a) and the cover plate (1b) enclose the chamber (10). The cover plate (1b) has an exhaust channel (14) inside that communicates with the exhaust port (101). The top plates of the air inlet section (112) and the air outlet section (110) are part of the cover plate (1b).

33. The separation module according to claim 30, characterized in that: The bottom edge of the air passage section (111) extends upward to form a baffle (15).

34. The separation module according to claim 29, characterized in that: The orthographic projection of the farthest point from the inlet of the air passage (111) to its outlet on the first horizontal plane is A. The orthographic projection of the center line of the chamber (10) on the first horizontal plane is B. The orthographic projection of the closest point from the end edge (400) of the pressure plate (4) to the inlet of the air passage (111) on the first horizontal plane is D. The orthographic projection of the farthest point from the outlet of the air passage (111) to its inlet on the first horizontal plane is C. The angle between the line DB connecting D and B and the line CB connecting C and B is β, and the angle β satisfies: 0°≤β≤60°. The angle between the line CB and the line AB is γ, and the angle θ satisfies: 45°≤θ≤90°.

35. A cleaning machine having the separation module according to any one of claims 1 to 34, characterized in that: It also includes a fan (8) and a filter (9), the filter (9) being disposed inside the housing (1), and the exhaust port (101), the filter (9) and the fan (8) being arranged in sequence along the fluid flow path.

36. The cleaning machine according to claim 35, characterized in that: The cleaning machine mentioned is a floor sweeper.

Images