Cleaning device and cleaning head

Abstract

Embodiments of the present application provide a cleaning device and a cleaning head. Through the structural arrangement of the guide section channel and the air inlet section channel, the cleaning effect of the cleaning device and the cleaning head is improved, and dirt is more easily sucked into the dust collection cavity and is less likely to be stuck outside the dust collection cavity. Further, through the arrangement of the second guide wall, larger dust and other dirt can more easily enter the dust collection cavity from the lower side of the dust collection cavity without being stuck outside the front end of the dust collection cavity. In addition, by arranging the working surface of the cleaning head relative to the surface to be cleaned at an angle, the cleaning device and the cleaning head are more capable of meeting the use requirements of different working scenarios.

Description

Technical Field

[0001] This application relates to the field of cleaning equipment technology, specifically to a cleaning device and a cleaning head. Background Technology

[0002] Vacuum cleaners are widely used as cleaning tools. Their principle involves a motor driving a fan impeller to rotate at high speed, causing air to be expelled at high speed. Simultaneously, air from the front suction chamber continuously replenishes the fan, creating a momentary vacuum inside the suction chamber. This creates a negative pressure difference with the external atmospheric pressure, drawing in air containing dust and debris, which is then filtered and discharged. However, current vacuum cleaners suffer from poor suction performance.

[0003] Furthermore, with market development, vacuum cleaners are being used in increasingly diverse scenarios, including carpets, hardwood floors, and tile floors. While existing vacuum cleaners offer various specialized brush heads, each head is designed for a single function and cannot be used interchangeably. The current market solution is to sell multiple brush heads in parallel, allowing different heads to be used for different cleaning scenarios. This leads to the following problems: vacuum cleaners are more expensive, and some functions are wasted, with some brush heads having lower actual demand; unused brush heads require extra storage space, increasing the overall product weight; switching between different cleaning scenarios is inconvenient, requiring repeated disassembly and reassembly of brush heads, which is time-consuming and laborious. Summary of the Invention

[0004] This application provides a cleaning device and a cleaning head to improve their performance.

[0005] This application provides a cleaning device, including a main body, a suction source, a cleaning head housing, and a roller brush. The suction source is disposed on the main body. The cleaning head housing has a suction chamber and a front end and a rear end disposed opposite to each other. The suction chamber is connected to the suction source. The direction from the front end to the rear end is a first direction. The front end of the cleaning head housing is provided with a suction channel to connect the suction chamber with the outside atmosphere. The roller brush is installed in the suction chamber.

[0006] The surface of the cleaning head housing closest to the surface to be cleaned is the working surface, and the working surface, at least in the portion near the front end of the cleaning head housing, gradually slopes towards the surface to be cleaned along the first direction.

[0007] In some embodiments, the axial direction of the roller brush is a second direction, which is perpendicular to the first direction, and at least one of the air intake channels and dust suction channels includes a guide section channel that tapers in the first direction.

[0008] In some embodiments, the guide segment channel includes first guide walls respectively provided on both sides along the first direction, and the first guide walls on both sides approach each other along the first direction.

[0009] In some embodiments, the guide segment channel gradually approaches the surface to be cleaned along a first direction.

[0010] In some embodiments, the dust extraction channel further includes an air intake channel connected downstream of the guide channel, the cross-sectional areas of the guide channel and the air intake channel having opposite trends of change along the first direction.

[0011] In some embodiments, the cross-sectional area of ​​the guide section channel gradually decreases along the first direction, the cross-sectional area of ​​the air intake section channel gradually expands along the first direction, and the rate at which the cross-sectional area of ​​the guide section channel gradually decreases is less than the rate at which the cross-sectional area of ​​the dust suction channel gradually expands.

[0012] In some embodiments, the guide section channel includes first guide walls respectively provided on both sides along the first direction, and the first guide walls on both sides approach each other along the first direction; the angle between the first guide wall and the inlet end section of the air intake section channel is α, and the angle between the inner wall of the air intake section channel and the inlet end section of the air intake section channel is β, and the angle α is smaller than the angle β.

[0013] In some embodiments, the cleaning head housing is provided with a second guide wall at its front end, and the second guide wall gradually approaches the surface to be cleaned along the first direction.

[0014] In some embodiments, the angle between the second guide wall and the surface to be cleaned is less than or equal to 45°.

[0015] In some embodiments, the inlet end of the air intake channel is located at the end of the second guide wall away from the surface to be cleaned, and the direction perpendicular to the surface to be cleaned is the third direction, and the second guide wall has a preset length in the third direction.

[0016] In some embodiments, the distance between the inlet end of the air intake channel and the surface to be cleaned ranges from [4.5mm, 6.5mm].

[0017] In some embodiments, the difference between the maximum and minimum spacing between the working surface and the surface to be cleaned ranges from [1mm, 3mm].

[0018] In some embodiments, the cleaning head housing is further provided with a first movable wheel and a second movable wheel, the first movable wheel and the second movable wheel being located on the front and rear sides of the suction chamber, respectively; wherein, when the first movable wheel and the second movable wheel are located on the same horizontal plane, the working surface on the bottom surface of the suction chamber gradually tilts towards the surface to be cleaned along the first direction.

[0019] Accordingly, embodiments of this application also provide a cleaning head, which includes a cleaning head housing and a roller brush. The cleaning head housing has a suction chamber and a front end and a rear end disposed opposite to each other, with the direction from the front end to the rear end being a first direction. The front end of the cleaning head housing is provided with at least one suction channel to connect the suction chamber with the outside atmosphere; the roller brush is installed in the suction chamber.

[0020] At least one of the suction channels includes a guide section channel, which tapers in a first direction.

[0021] In some embodiments, the dust extraction channel further includes an air intake channel disposed downstream of the guide section channel, the guide section channel and the air intake section channel being generally arranged in opposite funnel shapes.

[0022] In some embodiments, the cleaning head housing is provided with a second guide wall at its front end, and the second guide wall gradually approaches the surface to be cleaned along the first direction.

[0023] In some embodiments, the surface of the cleaning head housing near the surface to be cleaned is a working surface, and the working surface, at least in the portion near the front end of the cleaning head housing, gradually slopes towards the surface to be cleaned along the first direction.

[0024] Accordingly, embodiments of this application also provide a cleaning head, which includes a cleaning head housing and a roller brush. The cleaning head housing has a suction chamber and a front end and a rear end disposed opposite to each other, with the direction from the front end to the rear end being a first direction. The front end of the cleaning head housing is provided with at least one suction channel to connect the suction chamber to the outside atmosphere; the roller brush is disposed in the suction chamber. The suction channel includes a guide section channel, which tapers in the first direction and gradually approaches the surface to be cleaned along the first direction.

[0025] Accordingly, embodiments of this application also provide a cleaning device, including a main body, a suction source, a cleaning head housing, and a roller brush. The suction source is disposed on the main body; the cleaning head housing has a suction chamber and a front end and a rear end disposed opposite to each other, the suction chamber is connected to the suction source, and the direction from the front end to the rear end is a first direction; the roller brush is mounted on the suction chamber.

[0026] The surface of the cleaning head housing closest to the surface to be cleaned is the working surface, and the working surface gradually slopes towards the surface to be cleaned along the first direction, at least on the bottom part of the vacuum chamber.

[0027] This application has the following beneficial effects: The embodiments of this application provide a cleaning device and a cleaning head. Through the structural arrangement of the guide channel and the suction channel, the cleaning effect of the cleaning device and the cleaning head is improved, and dirt is more easily sucked into the suction chamber and less likely to get stuck outside the suction chamber. Furthermore, the provision of a second guide wall allows larger dust particles and other dirt to enter the suction chamber more easily from the lower side, rather than getting stuck on the outer side of the front end of the suction chamber.

[0028] Furthermore, by tilting the cleaning head relative to the working surface of the surface to be cleaned, the cleaning equipment and cleaning head can better meet the usage needs of different work scenarios. In the embodiments of this application, by tilting the working surface of the cleaning head, the working surface is higher at the front and lower at the back in the direction of the cleaning head's operation, which helps to make the front end of the cleaning head housing easier to lift. When encountering a large accumulation of particles, the lifting of the cleaning head raises the inlet end of the suction channel, making it easier for large particles to enter the suction channel. Moreover, when applied to working environments such as carpets, the wheels at the front end of the cleaning head housing easily sink into the carpet, that is, the height of the inlet end of the suction channel will be relatively lower, which helps to increase the vacuum degree in the suction chamber and improve the suction power. For a non-tilted cleaning head, the cleaning head housing will be supported on the carpet, making it difficult for the inlet end of the suction channel to sink, and its suction power will be lower than in this example. Therefore, it can be seen that this cleaning head and the cleaning equipment using this cleaning head can meet the cleaning needs of different surfaces to be cleaned. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 An exemplary schematic diagram of a cleaning head is shown.

[0031] Figure 2 An example is shown in a bottom view of a cleaning head.

[0032] Figure 3a An exemplary plan view of a vacuuming channel is shown.

[0033] Figure 3b An exemplary plan view of another suction channel is shown.

[0034] Figure 4 An exemplary cross-sectional view of the suction chamber of a cleaning head is shown.

[0035] Figure 5 Example shown Figure 4 A partially enlarged schematic diagram, C.

[0036] Figure 6 An exemplary side view of a cleaning head is shown.

[0037] Figure 7 Example shown Figure 6 A magnified view of a portion of the image.

[0038] Key element markings in the embodiments of this application:

[0039] Cleaning head housing 110 Top housing 111

[0040] Side shell 112 Bottom shell 113

[0041] Dust suction chamber 114, air intake channel 1141

[0042] Inner wall 1142 Second guide wall 114

[0043] Opening 115, Working surface 116

[0044] Connecting part 120 First moving wheel 131

[0045] Second moving wheel 132 guide section channel 140

[0046] First guide wall 141, roller brush 200 Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to up, down, left, and right in the actual use or working state of the device, specifically the drawing directions in the accompanying drawings.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0049] This application provides a cleaning device and a cleaning head, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0050] This application provides a cleaning device, which may be a handheld vacuum cleaner, floor scrubber, carpet cleaner, desktop cleaner, cleaning robot, or other cleaning devices, etc., and this embodiment is not limited thereto. Please refer to [link to relevant documentation]. Figure 1 The cleaning device mainly includes a main body (not shown), a suction source (not shown), a cleaning head housing 110, and a roller brush 200 (see figure). Figure 2 )wait.

[0051] Exemplarily, the main body includes a handheld handle for a user to operate the cleaning device. A connection portion 120 is provided on the handheld handle to connect with other components, allowing a suction source, a cleaning head housing 110, or other components to be mounted on the handheld handle. The handheld handle may also contain a conduit, so that when the handheld handle is connected to the cleaning head housing 110, the suction source can communicate with the cleaning head housing 110 through the conduit to form a suction channel. It is understood that in other embodiments, the cleaning device may be a self-moving device such as a cleaning robot. In this case, the main body is the housing structure of the cleaning robot rather than the handheld handle. However, the above examples of this embodiment do not constitute an undue limitation on this application.

[0052] In addition, the main body may also be equipped with components such as a dust collection bin, a wastewater tank, and a clean water tank (not shown). The dust collection bin and / or wastewater tank are configured in a pipeline connected to the suction source to collect the dirt sucked up by the cleaning equipment. The clean water tank is connected to the cleaning head housing 110 via a pipeline, and is used to provide water or other cleaning fluid to the cleaning head housing 110 to achieve better cleaning results. Of course, the components shown in this embodiment can be configured according to actual needs, and the examples in this embodiment do not constitute an undue limitation on this application.

[0053] In the embodiments of this application, the cleaning device is defined with a first direction X, a second direction Y, and a third direction Z.

[0054] Here, the cleaning head housing 110 has a front end and a rear end that are arranged opposite to each other. The front and rear ends are determined by the main direction of movement when the cleaning device cleans a surface to be cleaned. That is, the front end is closer to the front side of the direction of movement when cleaning a surface to be cleaned than the rear end. Here, the first direction X is described in terms of the structure of the cleaning head housing 110, that is, the direction from the front end to the rear end is the first direction X.

[0055] The second direction Y is parallel to the axis A of the roller brush 200 (see...). Figure 2 The third direction Z is perpendicular to both the first direction X and the second direction Y. When the cleaning device is used to clean the floor, the third direction Z is typically vertical; however, the examples in this application do not constitute an undue limitation.

[0056] Here, a connecting portion 120 is provided on the cleaning head housing 110, for example, in Figure 1 In the example shown, a connecting tube is rotatably connected to the rear end of the cleaning head housing 110, and the connecting tube serves as a connecting part 120 to connect to the hand handle of the main body.

[0057] Here, by way of example, the cleaning head housing 110 may include a top housing 111, a side housing 112, and a bottom housing 113. The top housing 111, the side housing 112, and the bottom housing 113 enclose a suction chamber 114 with a lower opening (see...). Figure 2 The suction chamber 114 has a suction channel at its front end to connect it to the outside atmosphere. For example, the suction channel may include an air inlet channel 1141. In use, the handheld handle is connected to the connecting pipe, and the suction source is connected to the suction chamber 114. Please see [link / details]. Figure 2 The lower opening 115 of the suction chamber 114 faces the surface to be cleaned, thus making the suction chamber 114 substantially sealed. Dust and other dirt can enter the suction chamber 114 through the air intake channel 1141 with the suction airflow and continue to flow to components such as the dust collection bin. The roller brush 200 is installed in the suction chamber 114. Typically, a portion of the roller brush 200 is exposed through the lower opening 115 of the suction chamber to contact the surface to be cleaned; however, this example does not constitute an undue limitation. Please refer to [further details omitted]. Figure 1 Typically, the top housing 111 is made of a transparent material to allow for viewing of the internal roller brush 200 (see [link]). Figure 2 The components such as the cleaning head housing 110 are observed. It is understood that in other embodiments, the arrangement of the cleaning head housing 110 is not limited to the above example, and the example in this embodiment does not constitute an undue limitation.

[0058] In some embodiments, the roller brush 200 may simultaneously be provided with both rigid and flexible roller brush strips for cleaning. Here, the flexible roller brush strip may include anti-static hair, and is configured to slightly over-extend against the surface to be cleaned, thus providing a gentle wiping effect and preventing hair tangling. Especially when the flexible roller brush strip is tilted, it provides better support, making it less likely for hair to become embedded in the flexible roller brush strip, thus reducing hair tangling problems.

[0059] For example, the bristles of both the rigid and soft-structured roller brush strips are arranged perpendicular to the axial direction of the roller brush 200, and the rigid and soft-structured roller brush strips are arranged closely in sequence. The rigid roller brush strips form a gap fit with the surface to be cleaned, with the distance between them set to approximately 0.2mm to 0.8mm. This way, when the roller brush 200 is running on the surface to be cleaned, the rigid roller brush strips will not excessively contact the surface, preventing scratches and excessive noise. However, when running on soft surfaces such as carpets, the rigid roller brush strips can have an interference fit with the carpet fibers, providing better patting effect to shake up dust hidden at the base of the carpet. The dense, soft-structured roller brush strips help to support the fibers, preventing hair from getting stuck at the base of the rigid roller brush strips, thus providing better anti-tangling properties.

[0060] In addition, soft bristles can be arranged between the rigid and flexible roller brush strips. These bristles are soft and slightly press against the surface to be cleaned. When working on the floor, the bristles effectively clean the floor without producing much noise.

[0061] The roller brush 200 can be driven by a brushless motor, which can automatically adjust its speed according to the load. When the roller brush 200 is running on a carpet, its load is large, resulting in a larger motor current, which causes it to automatically control the speed to increase to a certain value. When the roller brush 200 is running on a floor, since there are no carpet fibers or other obstructions, the load decreases, resulting in a smaller motor current, which causes it to automatically control the speed to decrease to a certain value. In this way, without the need for identification systems, sensors, etc., the system can identify the carpet / floor according to the load and operate at a high speed on the carpet for deep cleaning of carpet dust; while operating at a low speed on the floor avoids generating excessive noise.

[0062] It is understood that the above description of the roller brush 200 and its related structures is merely illustrative. In other embodiments, the roller brush 200 and its related structures are not limited to the above examples, and the examples in the embodiments of this application do not constitute an undue limitation on this application.

[0063] Here, the cleaning head housing 110 is further provided with a first moving wheel 131 and a second moving wheel 132. The first moving wheel 131 is located near the front end of the cleaning head housing 110, and the second moving wheel 132 is located near the rear end of the cleaning head housing 110. Both the first moving wheel 131 and the second moving wheel 132 are located on the side of the cleaning head housing 110 closest to the surface to be cleaned. The arrangement of the first moving wheel 131 and the second moving wheel 132 allows the cleaning device to move more smoothly on the surface to be cleaned. Here, typically, the diameter of the second moving wheel 132 is larger than the diameter of the first moving wheel 131, so that the user can operate the cleaning device more conveniently and the cleaning device can operate stably.

[0064] Furthermore, the suction chamber 114 may also include a cleaning fluid distribution element such as a water spray plate, which is connected to an external water source or a clean water tank mounted on the main body via a pipe. During use, the water spray plate can provide cleaning fluid to the roller brush 200 or the surface to be cleaned, thereby achieving a better cleaning effect.

[0065] Here, in the embodiments of this application, please refer to Figure 2 Two suction channels are provided at the front end of the cleaning head housing 110. Each suction channel includes an air intake channel 1141. The cleaning head housing 110 has a midline B parallel to the first direction X. The two suction channels and their air intake channels 1141 are symmetrically arranged on both sides of the midline to achieve a more uniform cleaning effect. Of course, if there are special needs, the suction channels can also be arranged asymmetrically according to the actual situation. In other embodiments, the suction channels can also be set to one, three, four, or other numbers according to actual needs. This embodiment does not constitute an undue limitation. Here, when only one suction channel and its air intake channel 1141 are provided at the front end of the cleaning head housing 110, it helps to suck up larger particulate dirt. However, the sealing at the inlet end of the air intake channel 1141 is poor, and the vacuum degree in the suction chamber 114 is low. Therefore, the dust removal effect on the surface to be cleaned is poor, especially the dust removal effect on soft surfaces such as carpets. When several smaller suction channels and their air intake channels 1141 are provided, dirt at the inlet end far from the air intake channel 1141 will be adsorbed on the outer side of the front wall of the cleaning head housing 110 due to the suction at the bottom gap of the cleaning head housing 110, and will be pushed forward by the cleaning head housing 110, thus failing to enter the air intake channel 1141, resulting in poor cleaning effect.

[0066] Here, the two suction channels and their air intake channel 1141 have the same structure, and both are connected to the external atmosphere and the suction chamber 114. This application's embodiment uses one of the suction channels and its related structure as an example for illustration.

[0067] Here, the air intake channel 1141 gradually expands along the first direction X, meaning the cross-sectional area of ​​the air intake channel 1141 gradually increases along the first direction X. Furthermore, the dust extraction channel also includes a guide channel 140, which is located upstream of the air intake channel 1141, with its outlet end connected to the inlet end of the air intake channel 1141. The guide channel 140 includes first guide walls 141 arranged on both sides along the first direction X, symmetrically arranged about the first direction X to form the guide channel 140. The symmetrically arranged first guide walls 141 are close to each other along the first direction X, meaning the distance between the two symmetrically arranged first guide walls 141 gradually decreases along the direction closer to the inlet end. Of course, it is understood that although the first guide wall 141 shown in this example and the accompanying drawings is symmetrically arranged, in other embodiments, the first guide wall 141 may also be asymmetrically arranged, as long as it can form the tapered guide segment channel 140. For example, the first guide wall 141 on one side is arranged along the first direction X, and the first guide wall 141 on the other side gradually approaches the first guide wall 141 on one side along the first direction X, etc. The example in this embodiment does not constitute an improper limitation thereof.

[0068] It can be seen that the first guide walls 141 gradually approach each other along the direction close to the inlet end, thereby forming a gradually narrowing guide section channel 140, so as to guide the airflow and dirt such as dust, so that the dirt such as dust between the two first running wheels, especially particulate dirt, can slide into the intake section channel 1141 along the inclined surface of the first guide wall 141, which helps to reduce the problem of particulate dirt getting stuck on the outside of the inlet end of the intake section channel 1141 and not being sucked in.

[0069] Furthermore, in some embodiments, the guide channel 140, while being configured to taper in the first direction X, can also be simultaneously configured to gradually approach the surface to be cleaned along the first direction X, i.e., the height between the guide channel 140 and the surface to be cleaned in the third direction Z gradually decreases along the first direction X. For example, when the surface to be cleaned is the ground, the guide channel 140 tapers along the first direction X, and its height gradually decreases, with the height of the inlet end of the guide channel 140 being higher than the height of the outlet end, in order to better guide particulate matter such as dust into the air intake channel, especially large dust particles. For example, the wall surface of the guide channel 140 on the side away from the surface to be cleaned gradually approaches the surface to be cleaned along the first direction X, so that the highest point of the guide channel 140 gradually approaches the surface to be cleaned.

[0070] Here, in some embodiments, the cross-sectional area of ​​the guide section channel 140 and the cross-sectional area of ​​the intake section channel 1141 have opposite trends along the first direction X. For example, please refer to... Figure 3a The cross-sectional area of ​​the guide channel 140 gradually decreases along the first direction X, while the cross-sectional area of ​​the intake channel 1141 gradually increases along the first direction X. Therefore, with the assistance of the first guide wall 141, dust and other contaminants are less likely to get stuck outside the intake channel 1141. Simultaneously, because the cross-sectional area of ​​the intake channel 1141 gradually increases, dust and other contaminants entering the intake channel 1141 are also less likely to get stuck inside. Thus, dust and other contaminants can be more efficiently carried into the cleaning equipment by the suction airflow, resulting in a better cleaning effect.

[0071] Please continue reading here. Figure 3a In the embodiments of this application, the rate at which the cross-sectional area of ​​the guide channel 140 gradually decreases is less than the rate at which the cross-sectional area of ​​the intake channel 1141 gradually increases. Here, the angle between the first guide wall 141 and the inlet end cross-section of the intake channel 1141 is α, and the angle between the inner wall 1142 of the intake channel 1141 and the inlet end cross-section of the intake channel 1141 is β, wherein the angle α is less than the angle β.

[0072] The guide section channel 140 and the intake section channel 1141 are arranged in a roughly opposite funnel-shaped structure. The inlet end of the intake section channel 1141 (i.e. the outlet end of the guide section channel 140) is the position with the smallest cross-sectional area in the funnel-shaped structure. Dirt entering the intake section channel 1141 will enter a space with gradually increasing width. Since the dirt can pass through the inlet end with the smallest cross-sectional area, it is usually not easy for it to get stuck in other wider positions in the intake section channel 1141. That is, dirt is not easy to get stuck in the intake section channel 1141.

[0073] It is understood that in other embodiments, the air intake channel 1141 may not be configured to gradually expand along the first direction X as described above; it may gradually shrink along the first direction X or have a constant cross-sectional area, etc. The example in this embodiment does not constitute an undue limitation. Furthermore, in the above embodiments and accompanying drawings... Figure 2 In this embodiment, all vacuum ducts have interconnected guide section ducts 140 and air intake section ducts 1141. However, in other embodiments, the vacuum ducts may only have guide section ducts 140 and not air intake section ducts 1141 (see [link to embodiment]). Figure 3b The examples in this embodiment do not constitute an undue limitation thereof.

[0074] Please see Figure 4 In some embodiments, the front end of the cleaning head housing 110 is further provided with a second guide wall 115, where the second guide wall 115 gradually approaches the surface to be cleaned along the first direction X. For example, please refer to... Figure 5 The angle between the extension line of the second guide wall 115 and the surface D to be cleaned is θ, and the front end of the second guide wall 115 is farther away from the surface D to be cleaned than the rear end of the second guide wall 115. Here, when the third direction Z is vertical, that is, the height of the front end of the second guide wall 115 is higher than the height of its rear end.

[0075] Here, larger particles of dust or other dirt, being too heavy to be sucked into the suction channel, or unable to enter due to the small inlet of the suction channel, will be located on the outer front end of the cleaning head housing 110 and pushed as the cleaning head housing 110 moves. The second guide wall 115 is used to guide the front end of the cleaning head housing 110 to lift up. That is, when the front end of the cleaning head housing 110 comes into contact with the dirt through the second guide wall 115, since the second guide wall 115 is inclined relative to the surface to be cleaned, the force exerted by the dirt on the second guide wall 115 after contact can be decomposed into a component force along the surface to be cleaned and a component force perpendicular to the surface to be cleaned. The component force perpendicular to the surface to be cleaned helps to slightly lift the second guide wall 115 and the front end of the cleaning head housing 110 so that larger dirt can enter the suction chamber 114 from the lower side of the front end of the cleaning head housing 110. In some examples, in order to make the component force perpendicular to the surface to be cleaned on the cleaning head housing 110 greater, the angle θ between the extension line of the second guide wall 115 and the surface to be cleaned D can be set to less than or equal to 45°.

[0076] Here, the inlet end of the air intake channel 1141 is located at the end of the second guide wall 115 away from the surface to be cleaned, and the second guide wall 115 has a preset length E in the third direction. Due to the arrangement of the second guide wall 115, the distance between the top of the inlet end of the air intake channel 1141 and the surface to be cleaned can be better controlled. That is, the distance between the inlet end and the surface to be cleaned can be determined by setting the preset length E of the second guide wall 115 in the third direction Z, so as to improve the problems of dirt being difficult to enter the dust collection chamber 114 due to the distance between the inlet end and the surface to be cleaned being too small, and the suction power loss of the suction airflow being too large due to the distance between the inlet end and the surface to be cleaned being too large. For example, in typical household use scenarios, most particulate dust particles have a diameter between 2.5mm and 5.5mm, while a few may have a diameter exceeding 6.5mm. Therefore, the distance between the inlet end and the surface to be cleaned is set to 4.5-6.5mm, such as 4.5mm, 5.5mm, or 6.5mm. It is understood that this embodiment only shows some examples and does not show all possible values. Of course, in other embodiments, the aforementioned second guide wall 115 may not be provided, and the inlet end of the air intake channel 1141 may be set within the aforementioned distance range through other means. The examples in this embodiment do not constitute an undue limitation. Furthermore, in other embodiments, the inlet end of the air intake channel 1141 may also be located in other positions, such as in the middle region of the second guide wall 115. This embodiment does not limit this.

[0077] In some embodiments, please refer to Figure 6 The surface of the cleaning head housing 110 closest to the surface to be cleaned is the working surface 116, which gradually slopes towards the surface to be cleaned in the first direction X. That is, the front end of the cleaning head housing 110 is slightly raised away from the surface to be cleaned compared to its rear end. It is understood that the working surface 116 is generally planar, but depending on actual structural requirements, it may have curved portions in some areas. This embodiment does not impose undue limitations on this, but generally, the working surface 116 tends to gradually approach the surface to be cleaned from front to back. Of course, in other embodiments, the working surface 116 may not be entirely sloped; only a portion of it may slope gradually from front to back. For example, the working surface 116... Figure 6 The portion within area a in the diagram is inclined. Similarly, the working surface 116 is inclined in a portion near the front end.

[0078] Here, the working surface 116 gradually approaches the surface to be cleaned from front to back on the bottom surface of the suction chamber. The bottom surface of the suction chamber includes not only the solid portion formed by the cleaning head housing 110, but may also include a virtual, non-solid portion. As mentioned above, the suction chamber has an opening 115 on the side facing the surface to be cleaned. Here, in the area of ​​the opening 115, connecting the two ends of the front edge of the opening 115 with the two ends of the rear edge correspondingly forms a virtual surface, which is also part of the bottom surface of the suction chamber.

[0079] For example, the bottom surface of the suction chamber includes the virtual surface corresponding to the opening 115, and the bottom surface of the housing portion of the cleaning head housing located around the opening 115. Specifically, it may include the bottom surfaces of the housing portions located on both sides of the opening 115 in the second direction Y, and the bottom surfaces of the housing portions located on both sides of the opening 115 in the first direction X. In one example, please see... Figure 2 In part b, the bottom surface of the housing portion extending forward a certain distance from the opening 115 in the opposite direction of the first direction X is used as part of the bottom surface of the suction chamber. This distance is short so that the first moving wheel 131 is completely outside the bottom surface range of the suction chamber; in another example, see Figure 2 In part c, the bottom surface of the housing portion extending forward a longer distance from the opening 115 in the opposite direction of the first direction X is used as part of the bottom surface of the suction chamber, and a portion of the first moving wheel 131 is located within the bottom surface area of ​​the suction chamber; in yet another example, see Figure 2 The bottom surface of the housing portion d, which extends a longer distance forward along the first direction X from the opening 115, is part of the bottom surface of the suction chamber, and the entire first moving wheel 131 is located within the bottom surface area of ​​the suction chamber.

[0080] Therefore, when the cleaning equipment operates on soft surfaces such as carpets, the working surface 116 of the cleaning head housing 110 does not contact the surface due to the raised front end; instead, it is supported by the first support wheel. Here, when the cleaning equipment is turned on, the negative pressure created by the suction airflow from the suction source causes the first support wheel to sink into the carpet fibers, lowering the front end and reducing the height of the inlet end of the air intake channel 1141. This reduces air leakage and helps improve the vacuum level within the suction chamber 114, thereby enhancing the dust removal capability for soft surfaces such as carpets. When the cleaning equipment operates on hard surfaces such as floors, the cleaning head housing 110 does not sink. Because the front end of the cleaning head housing 110 is raised, the inlet end of the air intake channel 1141 at the front end allows larger particles of dirt to enter more easily, resulting in better cleaning performance even on hard surfaces like floors.

[0081] For cleaning equipment where the working surface 116 is parallel to the surface to be cleaned, when operating on carpets, the rigid structure of the cleaning head housing 110 prevents the front end of the cleaning head housing 110 from sinking, thus preventing the inlet height from decreasing. This results in significant air leakage when cleaning carpets, leading to weaker carpet dust removal capabilities. Furthermore, reducing the distance between the front end of the cleaning head housing 110 and the surface to be cleaned would decrease the size of the inlet at the front, potentially preventing larger particles of dirt from entering the air intake channel 1141 when cleaning the floor.

[0082] For example, please refer to Figure 7 Here, the distance between the inlet end of the air intake channel 1141 and the surface to be cleaned in the third direction Z is defined as F; at the front end of the cleaning head housing 110, the distance between the working surface 116 and the surface to be cleaned in the third direction Z is G; at the rear side of the inlet end of the air intake channel 1141, the distance between the working surface 116 and the surface to be cleaned in the third direction Z is H.

[0083] For a typical cleaning head housing 110, its working surface 116 is parallel to the surface to be cleaned, meaning the distance between the working surface 116 and the surface to be cleaned is constant at G. Therefore, when operating on soft surfaces such as carpets, the cleaning head housing 110 will sink towards the surface to be cleaned due to the negative pressure generated by the suction airflow, with a sinking height of FG. In the embodiments of this application, when the cleaning device operates on soft surfaces such as carpets, the maximum sinking distance of the cleaning head housing 110 is FH. Since the working surface 116 is inclined, the distance G is greater than the distance H, therefore FH is greater than FG. Thus, the sinking distance of the cleaning head housing 110 on carpets in the embodiments of this application is greater, allowing the height of the inlet end of the front air inlet channel to decrease. This provides sufficient suction when cleaning soft surfaces such as carpets, improving the cleaning and dust removal level for these surfaces.

[0084] Furthermore, by way of example, in some embodiments, the difference between the maximum and minimum distance between the working surface 116 and the surface to be cleaned ranges from [1mm, 3mm]. For example, assuming that the working surface 116 is not tilted, the distance between the working surface 116 and the surface to be cleaned is H. After the working surface 116 is tilted, the working surface 116 can be configured such that the distance between the lowest point of its rear end and the surface to be cleaned is H, and the distance between the highest point of its front end and the surface to be cleaned is (H+h)mm, where h ranges from [1mm, 3mm]. Specifically, h can be 1mm, 1.5mm, 2mm, 2.3mm, 2.7mm, 3mm, etc., and this embodiment does not limit it. Therefore, when operating on hard surfaces such as floors, the cleaning head housing 110 will not sink. Because the front end of the cleaning head housing 110 is raised, larger particles of dirt can more easily enter the inlet end of the air intake channel 1141 located at the front end. On soft surfaces, the negative pressure created by the suction airflow from the suction source causes the front end to drop, lowering the height of the inlet end of the air intake channel 1141, thereby reducing air leakage and increasing the vacuum level within the suction chamber 114, thus improving the dust removal capability for soft surfaces such as carpets. In other words, in this example, the cleaning device with this configuration can achieve good cleaning results on both hard and soft surfaces simultaneously.

[0085] Furthermore, in some embodiments, only a portion of the working surface 116 at the front end of the cleaning head housing 110 may be inclined away from the surface to be cleaned, while the remaining working surfaces 116 remain parallel to the surface to be cleaned. For example, the aforementioned second guide wall 115 may be provided to cause the front end of the cleaning head housing 110 to be inclined away from the surface to be cleaned; however, this example is not intended to unduly limit its scope.

[0086] It is understood that in some embodiments, the working surface 116 is configured such that at least the portion near the front end of the cleaning head housing gradually slopes towards the surface to be cleaned along the first direction X, thereby achieving the corresponding technical effect. Of course, based on this, further configuring the aforementioned guide channel 140 and accordingly configuring the guide channel 140 and the air intake channel 1141, etc., according to the examples described in the foregoing embodiments, can achieve an even better technical effect of guiding dust and other contaminants into the suction chamber 114.

[0087] Accordingly, embodiments of this application also provide a cleaning head, which includes a cleaning head housing 110 and a roller brush 200.

[0088] The cleaning head housing 110 has a suction chamber 114 and a front end and a rear end arranged opposite to each other. The direction from the front end to the rear end is a first direction. The front end of the cleaning head housing 110 is provided with at least one suction channel to connect the suction chamber 114 with the outside atmosphere. The roller brush 200 is disposed in the suction chamber 114. The axis of the roller brush 200 is a second direction, which is perpendicular to the first direction.

[0089] At least one of the dust extraction channels includes a guide channel 140, which tapers in a first direction X.

[0090] For example, the guide channel 140 includes first guide walls 141 arranged on both sides along the first direction X. The first guide walls 141 can be symmetrical or asymmetrical, and the guide channel 140 is formed between the first guide walls 141 on both sides.

[0091] In some embodiments, the dust extraction channel further includes an air intake channel 1141 disposed downstream of the guide channel 140, wherein the guide channel 140 and the air intake channel 1141 are generally arranged in opposite funnel shapes.

[0092] In some embodiments, the cross-sectional area of ​​the guide section channel 140 and the cross-sectional area of ​​the intake section channel 1141 have opposite trends of change along the first direction.

[0093] In some embodiments, the cross-sectional area of ​​the guide section channel 140 gradually decreases along the first direction, the cross-sectional area of ​​the intake section channel 1141 gradually increases along the first direction, and the rate at which the cross-sectional area of ​​the guide section channel 140 decreases is less than the rate at which the cross-sectional area of ​​the intake section channel 1141 increases.

[0094] In some embodiments, the angle between the first guide wall 141 and the inlet end section of the air intake channel 1141 is α, and the angle between the inner wall of the air intake channel 1141 and the inlet end section of the air intake channel 1141 is β, wherein the angle α is smaller than the angle β.

[0095] In some embodiments, the number of suction channels is two, the cleaning head housing 110 has a center line parallel to the first direction, and the two suction channels are symmetrically arranged on both sides of the center line.

[0096] In some embodiments, the cleaning head housing 110 is provided with a second guide wall 115 at its front end, and the second guide wall 115 gradually approaches the surface to be cleaned along the first direction.

[0097] In some embodiments, the angle between the second guide wall 115 and the surface to be cleaned is less than or equal to 45°.

[0098] In some embodiments, the inlet end of the air intake channel 1141 is located at the end of the second guide wall 115 away from the surface to be cleaned, and the direction perpendicular to the surface to be cleaned is the third direction. The second guide wall 115 has a preset length in the third direction.

[0099] In some embodiments, the surface of the cleaning head housing 110 near the surface to be cleaned is a working surface 116, and the working surface 116 is at least in the portion near the front end of the cleaning head housing 110 that gradually slopes towards the surface to be cleaned along the first direction.

[0100] In some embodiments, the distance between the inlet end of the air intake channel 1141 and the surface to be cleaned ranges from [4.5mm to 6.5mm].

[0101] It is understood that the cleaning head in this embodiment is similar to the cleaning head in the aforementioned cleaning equipment embodiment. The examples of the cleaning head in the aforementioned cleaning equipment embodiment can be applied to this embodiment. This embodiment will not repeat the repeated parts.

[0102] Accordingly, embodiments of this application also provide a cleaning head, which includes a cleaning head housing 110 and a roller brush 200.

[0103] The cleaning head housing 110 has a dust suction chamber 114 and a front end and a rear end arranged opposite to each other. The direction from the front end to the rear end is the first direction. The front end of the cleaning head housing 110 is provided with at least one dust suction channel to connect the dust suction chamber 114 with the outside atmosphere. The roller brush 200 is disposed in the dust suction chamber 114.

[0104] Here, the suction channel includes a guide channel 140, which tapers in the first direction X and gradually approaches the surface to be cleaned along the first direction X.

[0105] It is understood that the cleaning head in this embodiment is similar to the cleaning head in the aforementioned cleaning equipment embodiment. The examples of the cleaning head in the aforementioned cleaning equipment embodiment can be applied to this embodiment. This embodiment will not repeat the repeated parts.

[0106] Accordingly, embodiments of this application also provide a cleaning device, which includes a main body, a suction source, and a cleaning head, wherein the cleaning head includes a cleaning head housing 110 and a roller brush 200.

[0107] The suction source is disposed on the main body; the cleaning head housing has a suction chamber and a front end and a rear end disposed opposite to each other, the suction chamber is connected to the suction source, and the direction from the front end to the rear end is the first direction; the roller brush is installed in the suction chamber.

[0108] The surface of the cleaning head housing closest to the surface to be cleaned is the working surface, and the working surface gradually slopes towards the surface to be cleaned along the first direction, at least on the bottom part of the dust suction chamber.

[0109] In some embodiments, the front end of the cleaning head housing 110 is provided with at least one suction channel to connect the suction chamber 114 with the outside atmosphere. The suction channel includes a guide section channel 140, which gradually narrows in a first direction X and gradually approaches the surface to be cleaned along the first direction X; or the guide section channel 140 gradually narrows in the first direction X.

[0110] It is understood that the cleaning device described in this embodiment is similar to the relevant settings in the aforementioned cleaning device embodiment and cleaning head embodiment. The examples in the aforementioned cleaning device embodiment and cleaning head embodiment can be applied to this embodiment. This embodiment will not elaborate on the repeated parts.

[0111] Application Example 1

[0112] In application example one, a cleaning device is provided, which is a handheld vacuum cleaner. The handheld vacuum cleaner has a cleaning head, which includes a cleaning head housing 110, within which a roller brush 200 is disposed. Furthermore, an air intake channel 1141 is provided at the front end of the cleaning head housing 110, and a guide channel 140 is provided outside the air intake of the air intake channel 1141. The guide channel 140 is horizontally oriented and gradually narrows, while the air intake channel 1141 gradually widens. The guide channel 140 helps guide dirt into the air intake channel 1141, preventing dirt from getting stuck outside the air intake channel 1141. The gradually widening air intake channel 1141 also prevents dirt from getting stuck inside, thus enabling the handheld vacuum cleaner to achieve better cleaning results on both carpets and floors.

[0113] Application Example 2

[0114] In Application Example 2, a floor scrubber is provided. Its structure is largely the same as the cleaning device shown in Application Example 1. The difference lies in that the floor scrubber's suction chamber 114 is equipped with a water distribution structure to provide cleaning fluid to the roller brush 200 within the cleaning chamber or to the floor. Furthermore, a second guide wall 115 is provided at the front end of the cleaning head housing 110. The second guide wall 115 is inclined at an acute angle to the vertical direction, and its bottom end is closer to the suction chamber 114. Here, when encountering larger particles or large piles of particulate matter, the second guide wall 115 will be subjected to a vertical force, causing the front end of the cleaning head housing 110 to be slightly raised, allowing larger particles or large piles of particulate matter to enter the suction chamber 114 from the lower side of the cleaning head housing 110.

[0115] Application Example 3

[0116] In application example three, a cleaning device is provided, which is a robotic vacuum cleaner. Its structure is largely the same as the cleaning devices shown in application examples one or two. The difference lies in that the bottom of the cleaning head housing 110 has a working surface 116, which gradually slopes downwards along a first direction X. Therefore, when cleaning carpets, the front end of the cleaning head and its working surface 116 can sink due to negative pressure to approach the carpet, thereby reducing air leakage and improving the vacuuming effect; when cleaning hard surfaces such as floors and tiles, the cleaning head and its working surface 116 will not sink, so as not to obstruct larger particles from being sucked into the suction chamber 114.

[0117] Application Example 4

[0118] In application example four, a method of using the cleaning device shown in any of the aforementioned application examples one to three is provided. The cleaning device has a suction source that continuously provides a negative pressure difference through the rotation of the fan blades. The cleaning head relies on this pressure difference to create a suction airflow, drawing dust or particulate matter into the suction chamber 114 through the gap between the device and the ground and the air intake channel 1141, and then into a dust collection bin or other dust collection components. With the aforementioned configuration, the cleaning device can achieve excellent cleaning results on both soft surfaces such as carpets and hard surfaces such as floors and tiles, and dust and other dirt are less likely to become trapped.

[0119] Application Example 5

[0120] In application example five, a cleaning head is provided, which includes a cleaning head housing 110 and a roller brush 200. This cleaning head can be applied to cleaning equipment.

[0121] The cleaning head housing 110 has a dust suction chamber 114 and a front end and a rear end arranged opposite to each other. The direction from the front end to the rear end is the first direction. The front end of the cleaning head housing 110 is provided with at least one air intake channel 1141 to connect the dust suction chamber 114 with the outside atmosphere. The roller brush 200 is disposed in the dust suction chamber 114.

[0122] Here, the surface of the cleaning head housing 110 near the surface to be cleaned is the working surface 116. The working surface 116, at least in the portion near the front end of the cleaning head housing 110, gradually slopes towards the surface to be cleaned along the first direction X. For example, the working surface 116 can be configured to slope gradually towards the surface to be cleaned along the first direction X as a whole, that is, the working surface 116 gradually approaches the surface to be cleaned along the first direction X.

[0123] Here, the tilted design makes it easier to lift the front end of the cleaning head housing 110. When encountering a large accumulation of particles, the lifting of the cleaning head raises the inlet end of the air intake channel 1141, allowing larger particles to enter more easily. Furthermore, when used in environments with carpets, the wheels at the front of the cleaning head housing 110 tend to sink into the carpet, thus lowering the height of the inlet end of the air intake channel 1141. This helps increase the vacuum level within the suction chamber and improves suction power. In contrast, with a non-tilted cleaning head, the housing rests on the carpet, making it difficult for the inlet end of the air intake channel 1141 to sink, resulting in lower suction power compared to this example.

[0124] Therefore, the cleaning head shown in this example is applicable to different scenarios. It is not only suitable for cleaning hard floors, but also has a better cleaning effect when applied to cleaning soft surfaces such as carpets.

[0125] It is understood that the terms used in the embodiments of this application have the same meaning. For any content not described in detail in a certain embodiment, the specific implementation details can be referred to the descriptions in other embodiments. The examples and technical effects shown in the foregoing embodiments can be implemented accordingly. For repeated parts, this embodiment will not elaborate further.

[0126] The cleaning equipment and cleaning head provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A cleaning device, characterized in that, include, main body; A suction source is disposed on the main body; The cleaning head housing has a suction chamber and a front end and a rear end arranged opposite to each other. The suction chamber is connected to the suction source. The direction from the front end to the rear end is the first direction. The front end of the cleaning head housing is provided with a suction channel to connect the suction chamber with the outside atmosphere. as well as A roller brush is installed in the suction chamber; The cleaning head housing has a working surface on the side near the surface to be cleaned. This working surface, at least in the portion near the front end of the cleaning head housing, gradually slopes towards the surface to be cleaned along the first direction. The front end of the cleaning head housing also has a second guide wall, which gradually approaches the surface to be cleaned along the first direction. The second guide wall guides the front end of the cleaning head housing to lift, allowing dirt to enter the suction chamber from the lower side of the front end. The suction channel includes a guide section channel that tapers in the first direction and an air intake section channel connected downstream of the guide section channel. The inlet end of the air intake section channel is located at the second guide section channel. The guide section channel is located away from the surface to be cleaned at one end; the guide section channel is connected to the external atmosphere, and the air intake section channel is connected to the dust collection chamber; the guide section channel includes first guide walls respectively provided on both sides along the first direction, and the first guide walls on both sides are close to each other along the first direction; the angle between the first guide wall and the inlet end section of the air intake section channel is α, and the angle between the inner wall of the air intake section channel and the inlet end section of the air intake section channel is β, the angle α is smaller than the angle β, the guide section channel is surrounded by the first guide wall, the air intake section channel is surrounded by the inner wall of the air intake section channel, and the guide section channel is directly connected to the air intake section channel.

2. The cleaning equipment as described in claim 1, characterized in that, The axis of the roller brush is a second direction, which is perpendicular to the first direction. At least one of the suction channels includes a guide section channel, which tapers in the first direction.

3. The cleaning equipment as described in claim 2, characterized in that, The guide channel includes first guide walls provided on both sides along the first direction, with the first guide walls on both sides approaching each other along the first direction.

4. The cleaning equipment as described in claim 2 or 3, characterized in that, The guide channel gradually approaches the surface to be cleaned along the first direction.

5. The cleaning equipment as described in claim 2 or 3, characterized in that, The dust extraction channel also includes an air intake channel connected downstream of the guide section channel, and the cross-sectional areas of the guide section channel and the air intake channel have opposite trends of change along the first direction.

6. The cleaning equipment as described in claim 5, characterized in that, The cross-sectional area of ​​the guide section channel gradually decreases along the first direction, and the cross-sectional area of ​​the intake section channel gradually expands along the first direction, and the rate at which the cross-sectional area of ​​the guide section channel decreases is less than the rate at which the cross-sectional area of ​​the intake section channel expands.

7. The cleaning equipment as described in claim 1, characterized in that, The angle between the second guide wall and the surface to be cleaned is less than or equal to 45°.

8. The cleaning equipment as described in claim 7, characterized in that, The direction perpendicular to the surface to be cleaned at the inlet end of the air intake channel is the third direction, and the second guide wall has a preset length in the third direction.

9. The cleaning equipment as described in claim 1, characterized in that, The distance between the inlet end of the air intake channel and the surface to be cleaned ranges from [4.5mm to 6.5mm].

10. The cleaning equipment as claimed in claim 1, characterized in that, The difference between the maximum and minimum distance between the working surface and the surface to be cleaned ranges from 1mm to 3mm.

11. The cleaning equipment as claimed in claim 1, characterized in that, The cleaning head housing is also provided with a first movable wheel and a second movable wheel, which are located at the front and rear sides of the suction chamber, respectively. When the first and second moving wheels are on the same horizontal plane, the working surface gradually tilts towards the surface to be cleaned along the first direction on the bottom part of the vacuum chamber.

12. A cleaning head, characterized in that, include, A cleaning head housing has a suction chamber and a front end and a rear end arranged opposite to each other. The direction from the front end to the rear end is a first direction. The front end of the cleaning head housing is provided with at least one suction channel to connect the suction chamber with the outside atmosphere. The front end of the cleaning head housing is also provided with a second guide wall. The second guide wall gradually approaches the surface to be cleaned along the first direction. The second guide wall is used to guide the front end of the cleaning head housing to lift up, so that dirt enters the suction chamber from the lower side of the front end of the cleaning head housing. A roller brush is installed in the suction chamber; At least one of the suction channels includes a guide section channel, which tapers in a first direction. The suction channel also includes an air intake section channel connected downstream of the guide section channel. The guide section channel communicates with the external atmosphere, and the air intake section channel communicates with the suction chamber. The guide section channel includes first guide walls respectively provided on both sides along the first direction, with the two first guide walls approaching each other along the first direction. The angle between the first guide wall and the inlet end section of the air intake section channel is α, and the angle between the inner wall of the air intake section channel and the inlet end section of the air intake section channel is β. The angle α is smaller than the angle β. The inlet end of the air intake section channel is located at the end of the second guide wall away from the surface to be cleaned. The guide section channel is surrounded by the first guide wall, and the air intake section channel is surrounded by the inner wall of the air intake section channel. The guide section channel is directly connected to the air intake section channel.

13. The cleaning head as described in claim 12, characterized in that, The dust extraction channel also includes an air intake channel located downstream of the guide section channel, and the guide section channel and the air intake section channel are generally arranged in opposite funnel shapes.

14. The cleaning head as described in claim 12, characterized in that, The cleaning head housing has a second guide wall at its front end, and the second guide wall gradually approaches the surface to be cleaned along the first direction.

15. The cleaning head as described in claim 14, characterized in that, The surface of the cleaning head housing closest to the surface to be cleaned is the working surface, and the working surface, at least in the portion near the front end of the cleaning head housing, gradually slopes towards the surface to be cleaned along the first direction.

16. A cleaning head for cleaning a surface to be cleaned, characterized in that, include, The cleaning head housing has a suction chamber and a front end and a rear end arranged opposite to each other. The direction from the front end to the rear end is a first direction. The front end of the cleaning head housing is provided with a suction channel to connect the suction chamber with the outside atmosphere. The front end of the cleaning head housing is also provided with a second guide wall. The second guide wall gradually approaches the surface to be cleaned along the first direction. The second guide wall is used to guide the front end of the cleaning head housing to lift up, so that dirt enters the suction chamber from the lower side of the front end of the cleaning head housing. A roller brush is installed in the suction chamber; The dust collection channel includes a guide section channel and an air intake section channel connected downstream of the guide section channel. The guide section channel gradually narrows in a first direction and gradually approaches the surface to be cleaned along the first direction. The guide section channel is connected to the external atmosphere, and the air intake section channel is connected to the dust collection chamber. The guide section channel includes first guide walls on both sides along the first direction, and the two first guide walls approach each other along the first direction. The angle between the first guide wall and the inlet end section of the air intake section channel is α, and the angle between the inner wall of the air intake section channel and the inlet end section of the air intake section channel is β. The angle α is smaller than the angle β. The inlet end of the air intake section channel is located at the end of the second guide wall away from the surface to be cleaned. The guide section channel is surrounded by the first guide wall, and the air intake section channel is surrounded by the inner wall of the air intake section channel. The guide section channel is directly connected to the air intake section channel.

17. A cleaning device, characterized in that, include, main body; A suction source is disposed on the main body; The cleaning head housing has a suction chamber and a front end and a rear end arranged opposite to each other. The suction chamber is connected to the suction source. The direction from the front end to the rear end is a first direction. The front end of the cleaning head housing is provided with a suction channel. The front end of the cleaning head housing is also provided with a second guide wall. The second guide wall gradually approaches the surface to be cleaned along the first direction. The second guide wall is used to guide the front end of the cleaning head housing to lift up, so that dirt enters the suction chamber from the lower side of the front end of the cleaning head housing. And a roller brush, installed in the suction chamber; The cleaning head housing has a working surface on the side closest to the surface to be cleaned. This working surface, at least on the bottom portion of the suction chamber, gradually slopes towards the surface to be cleaned along the first direction. The suction channel includes a guide section channel and an air intake section channel connected downstream of the guide section channel. The guide section channel tapers in the first direction. The guide section channel communicates with the external atmosphere, and the air intake section channel communicates with the suction chamber. The guide section channel includes first guide walls on both sides along the first direction, with the first guide walls approaching each other along the first direction. The angle between the first guide wall and the inlet section of the air intake section channel is α, and the angle between the inner wall of the air intake section channel and the inlet section of the air intake section channel is β. The angle α is smaller than the angle β. The inlet end of the air intake section channel is located at the end of the second guide wall away from the surface to be cleaned. The guide section channel is enclosed by the first guide wall, and the air intake section channel is enclosed by the inner wall of the air intake section channel. The guide section channel directly communicates with the air intake section channel.

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