A pool cleaner

Abstract

The application discloses a pool cleaner, which comprises a suction head and a barrel connected with the suction head, wherein the suction head is provided with a suction section, the end of the suction section is provided with a suction port, and the outer wall of the suction port and the inner wall of the barrel are provided with a nozzle; a sealed pressure cavity is arranged between the suction head and the barrel, a flow splitting mechanism is arranged in the pressure cavity, the flow splitting mechanism comprises a flow splitting rib and a flow blocking rib, a first through port and a second through port are symmetrically arranged between the flow splitting rib and the flow blocking rib, the first through port and the second through port are in communication with the nozzle, a water inlet channel is arranged on the barrel or the suction head, a through hole in communication with the water inlet channel is arranged in the pressure cavity, the pressure cavity is in communication with the nozzle, and the flow splitting rib is opposite to the through hole. The application has the beneficial effects that the flow splitting mechanism rectifies the fluid in the pressure cavity, the fluid in the pressure cavity is symmetrically transported to the nozzle through the first through port and the second through port after being pressurized, the turbulent dissipation of the fluid is low, vortexes are avoided in the barrel, and the suction force of the pool cleaner is improved.

Description

Technical Field

[0001] This application relates to the field of pool cleaning equipment technology, and more particularly to a pool cleaner. Background Technology

[0002] With the improvement of living standards, home swimming pools have become increasingly common, making pool cleaning a challenging issue, which has led to the development of pool cleaners. Currently, the mainstream pool cleaners on the market mainly use Venturi nozzles. These cleaners use an external water pump or other water flow power source to provide a high-speed flow of water to the Venturi nozzle. As this high-speed water flow passes through the internal channels of the Venturi tube, it carries other water within the channel towards the Venturi tube outlet, thereby sucking out dirt from the bottom of the pool.

[0003] Currently, the Venturi nozzles of pool cleaners generally adopt a one-piece fixed structure, with the suction section and conveying section usually not detachable. Therefore, due to the complex flow channel shape, this one-piece structure must be formed in one piece using high-precision molds, directly resulting in high production costs and low yield rates. Furthermore, because it is a one-piece structure, when the nozzle becomes clogged or worn, it cannot be disassembled or partially repaired; the entire unit must be replaced, leading to high maintenance costs and environmental pollution. Simultaneously, the high processing difficulty of the one-piece fixed structure makes it difficult to optimize the geometry of its flow channel, easily generating turbulence and vortices, which directly results in high energy loss, low adsorption efficiency, and low water flow energy utilization. Summary of the Invention

[0004] One objective of this application is to provide a pool cleaner that can solve at least one of the defects in the aforementioned background technology.

[0005] To achieve at least one of the above objectives, the technical solution adopted in this application is as follows: a swimming pool cleaner, comprising a suction head and a cylinder connected to the suction head, wherein the suction head is provided with a suction section, the end of the suction section is provided with a suction port, and a nozzle is provided between the outer wall of the suction port and the inner wall of the cylinder; a sealed pressure chamber is provided between the suction head and the cylinder, and a flow-dividing mechanism is provided in the pressure chamber, the flow-dividing mechanism including a flow-dividing rib and a flow-blocking rib, a first through-hole and a second through-hole are symmetrically arranged between the flow-dividing rib and the flow-blocking rib, and both the first through-hole and the second through-hole are connected to the nozzle; a water inlet channel is provided in the cylinder or the suction head, a through hole connected to the water inlet channel is provided in the pressure chamber, the pressure chamber is connected to the nozzle, and the flow-dividing rib is directly opposite the through hole.

[0006] With the above configuration, the pool cleaner can be designed in two parts, thereby reducing production difficulty, enabling targeted maintenance of functional components, and greatly reducing maintenance costs and spare parts inventory. The fluid in the water inlet channel can enter the pressure chamber through the through hole, and then the flow distribution mechanism divides the fluid at the through hole, so that the fluid flows evenly to the depth of the pressure chamber. After the fluid is rectified and pressurized in the pressure chamber, it flows to the nozzle through the first and second through holes, which can make the fluid on both sides more uniform and avoid the formation of vortices in the cylinder, thereby improving the suction power of the pool cleaner.

[0007] Preferably, the suction head is provided with an annular baffle, the through hole is provided in the annular baffle, and the cylinder is provided with a mounting base, which cooperates with the annular baffle to form the pressure chamber; the annular baffle is coaxially arranged with the suction port, and the diverting rib and the baffle rib are both located inside the annular baffle. With this configuration, when the pressure chamber becomes blocked, the mounting base can be disassembled and the inside of the pressure chamber cleaned, thereby reducing the maintenance difficulty of the pool cleaner.

[0008] Preferably, the inner wall of the mounting base is provided with a connecting groove, which is L-shaped, and the outer wall of the annular baffle is provided with a connecting block. The connecting block is used to cooperate with the connecting groove to limit the mounting base to be installed on the annular baffle. With this configuration, the suction head can be quickly connected to the cylinder through the limiting cooperation between the connecting block and the connecting groove. During installation, simply insert the connecting block into the connecting groove and rotate the suction head to complete the engagement.

[0009] Preferably, the water inlet channel is directly opposite the through hole, and the flow divider has a protrusion in the shape of a V. The apex of the protrusion is located at the center of the through hole. The protrusion guides the fluid into the pressure chamber along the tangential direction of the flow divider. This arrangement allows the protrusion to divide the fluid into two parts flowing towards both sides of the annular baffle, thereby balancing the velocity of the fluid on both sides. The annular baffle, in conjunction with the flow divider, can rectify the fluid flow and prevent turbulence.

[0010] Preferably, a baffle is provided between the flow-blocking rib and the annular baffle, and the baffle, the apex of the protrusion, and the water inlet channel are all located on the same straight line. This arrangement allows the fluid on both sides of the annular baffle to be separated by the baffle, preventing the fluids on both sides from interfering with each other and causing a decrease in fluid velocity.

[0011] Preferably, both the flow-diverting ribs and the flow-blocking ribs are arc-shaped, and they cooperate to form a flow-guiding cavity. Both the first and second openings are connected to the flow-guiding cavity. Multiple flow-guiding ribs are arranged within the flow-guiding cavity at equal intervals along the periphery of the suction port. This arrangement allows the fluid at the through-hole to flow along the tangential direction of the annular flow-blocking ribs through the arc-shaped flow-diverting ribs, preventing the fluid from directly impacting the inner wall of the annular flow-blocking ribs and causing eddies and pressure losses. Furthermore, the arc-shaped profile guides the fluid to smoothly change direction, eliminating turbulence. The flow-guiding ribs further rectify the fluid at the first and second openings, concentrating fluid energy axially by eliminating excess radial and tangential velocity vectors, thereby maximizing the effective output power at the nozzle.

[0012] Preferably, a filter mechanism is provided inside the water inlet channel; a water inlet connector is detachably installed on the water inlet channel. This configuration prevents debris from entering the pressure chamber and clogging the nozzle through the filter mechanism, improving the product's operational stability; during product operation, fluid can be introduced into the pressure chamber by installing a water pipe at the water inlet connector.

[0013] Preferably, the cylinder includes a throat section and a diffuser section. A connection port and a drain port are respectively provided at both ends of the cylinder. The drain port extends into the connection port, and the throat section is located near the connection port. The ratio of the length to the inner diameter of the throat section ranges from 0.3 to 2.5. The diffuser section is connected to the throat section, and the wall of the diffuser section expands outward towards the drain port with an expansion angle ranging from 1° to 3.5°. This configuration allows the fluid in the throat section to form a sufficiently stable flow field when entering the diffuser section. When the expansion angle of the diffuser section wall is 1° to 3.5°, it ensures the smoothest flow and minimal energy loss during the deceleration and pressurization process, thereby achieving optimal ejection efficiency.

[0014] Preferably, the cross-section of the suction section increases sequentially from bottom to top, and the longitudinal cross-section of the suction section is arc-shaped, with the arc surface chord ratio ranging from 0.05 to 0.45. This configuration balances flow efficiency and adsorption power, ensuring a smooth fluid transition, minimizing energy loss at the suction port, and generating sufficient negative pressure to provide the necessary power for adsorbing waste, suspended solids, etc.

[0015] Preferably, the cylindrical body is provided with a hinge seat, a connecting rod is rotatably mounted on the hinge seat, and the connecting rod is provided with a insertion cavity for inserting an extension rod. This configuration allows for an increase in the effective control range of the pool cleaner by inserting an extension rod into the insertion cavity.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: (1) The diversion mechanism can rectify the fluid in the pressure chamber, so that the fluid in the pressure chamber is pressurized through the first port and the second port, and then the fluid is symmetrically delivered to the nozzle with low turbulence dissipation, avoiding the generation of vortices in the cylinder, thereby improving the suction of the pool cleaner.

[0017] (2) The separate design of the cylinder and the suction head can reduce the difficulty of production, realize the targeted maintenance of functional components, and greatly reduce maintenance costs and spare parts inventory. When the pressure chamber is blocked, the mounting base can be disassembled and the inside of the pressure chamber can be cleaned, thereby reducing the maintenance difficulty of the pool cleaner.

[0018] (3) The arc-shaped flow divider directs the fluid at the through-hole to flow along the tangential direction of the annular baffle, preventing the fluid from directly impacting the inner wall of the annular baffle and causing eddies and pressure loss. In addition, the arc-shaped profile can also guide the fluid to smoothly change direction and eliminate turbulence. The flow divider can rectify the fluid at the first and second through-holes again, and by eliminating excess radial and tangential velocity vectors, the fluid energy is highly concentrated in the axial direction, thereby maximizing the effective output power at the nozzle. This invention has the advantages of strong suction, stable operation and simple assembly. Attached Figure Description

[0019] Figure 1 This is a schematic cross-sectional view of the pool cleaner in this application. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the suction head in this application.

[0021] Figure 3 This is a schematic diagram of the overall structure of the pool cleaner in this application.

[0022] Figure 4 This is a schematic cross-sectional view of the pool cleaner in this application. Figure 2 .

[0023] Figure 5 This is a schematic cross-sectional view of the pool cleaner in this application. Figure 3 .

[0024] Figure 6 This is a schematic diagram of the structure of the cylinder in this application.

[0025] In the diagram: 1. Suction head; 11. Suction section; 100. Nozzle; 110. Suction port; 2. Cylinder; 21. Mounting base; 22. Throat section; 23. Diffuser section; 24. Connection port; 25. Drain port; 26. Mounting part; 200. Water inlet connector; 201. First port; 202. Second port; 210. Water inlet channel; 3. Annular baffle; 31. Connecting block; 32. Through hole; 300. Tongue; 4. Diverting rib; 41. Protrusion; 400. Guide rib; 5. Baffle rib; 500. Hinge seat; 501. Connecting rod; 6. Roller; 600. Connecting groove; 601. Connection part; 602. Engaging part; 7. Brush head. Detailed Implementation

[0026] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0028] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0030] One aspect of this application provides a pool cleaner, one preferred embodiment of which is, for example... Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the device includes a suction head 1 and a cylinder 2 connected to the suction head 1. The middle of the suction head 1 is raised to form a suction section 11, and a suction port 110 is provided at the end of the suction section 11. When the machine is running, the fluid in the pool can enter the cylinder 2 through the suction port 110, thereby cleaning the fluid in the pool. A nozzle 100 is provided between the outer wall of the suction port 110 and the inner wall of the cylinder 2. A sealed pressure chamber is provided between the suction head 1 and the cylinder 2. A water inlet channel 210 is provided on the cylinder 2 or the suction head 1. The pressure chamber is connected to the nozzle 100, and a through hole 32 connected to the water inlet channel 210 is provided in the pressure chamber to ensure that the fluid in the water inlet channel 210 can enter the sealed chamber for rectification before flowing to the nozzle 100.

[0031] It should be noted that this application uses a water pump to transfer fluid through the inlet channel 210 to the pressure chamber. Then, the pressure chamber's rectifying effect delivers the fluid to the nozzle 100 with low turbulent dissipation. When the fluid in the nozzle 100 enters the cylinder 2, it triggers the Bernoulli effect, meaning there is a velocity difference between the fluid at the nozzle 100 and the fluid inside the cylinder 2. This velocity difference generates a strong turbulent shearing effect, efficiently transferring kinetic energy to the surrounding low-speed fluid, thereby increasing the suction power of the pool cleaner. The cylinder 2 in this application can be selected from, but is not limited to, a venturi tube.

[0032] Furthermore, such as Figure 2 As shown, a flow-diverting mechanism is provided inside the pressure chamber. The flow-diverting mechanism includes a flow-diverting rib 4 and a flow-blocking rib 5. The flow-diverting rib 4 faces the through hole 32, and the flow-blocking rib 5 is away from the through hole 32. A first through-hole 201 and a second through-hole 202 are symmetrically arranged between the flow-diverting rib 4 and the flow-blocking rib 5. Both the first through-hole 201 and the second through-hole 202 are connected to the nozzle 100. When the machine is running, the fluid in the water inlet channel 210 can enter the pressure chamber through the through hole 32. Then, the flow-diverting mechanism diverts the fluid at the through hole 32, so that the fluid flows evenly to the depth of the pressure chamber. After the fluid is rectified and pressurized in the pressure chamber, it flows to the nozzle 100 through the first through-hole 201 and the second through-hole 202. This makes the fluid on both sides more uniform and avoids the formation of vortices in the cylinder 2, thereby improving the suction power of the pool cleaner.

[0033] In this embodiment, as Figure 4 and Figure 5 As shown, the suction head 1 and the cylinder 2 are separate components. The suction head 1 is equipped with an annular baffle 3, and the cylinder 2 is equipped with a mounting base 21. The annular baffle 3 extends at least partially into the mounting base 21, and the mounting base 21 cooperates with the annular baffle 3 to form a pressure chamber. The annular baffle 3 is coaxially arranged with the suction port 110, and the diversion rib 4 and the flow-blocking rib 5 are both located inside the annular baffle 3. When a blockage occurs in the pressure chamber, the mounting base 21 can be disassembled and the inside of the pressure chamber can be cleaned.

[0034] Specifically, such as Figure 5 As shown, the water inlet channel 210 is directly opposite the through hole 32. The diverting rib 4 is provided with a protrusion 41. The protrusion 41 is V-shaped, and the apex of the protrusion 41 is directly opposite the water inlet channel 210. When the fluid enters the through hole 32 through the water inlet channel 210, the protrusion 41 can guide the fluid through two inclined sides, so that the fluid flows along the tangent direction of the diverting rib 4 to both sides of the annular baffle 3, thereby pressurizing the fluid. The annular baffle 3 can also work with the diverting rib 4 to define the movement path of the fluid and avoid turbulence.

[0035] Furthermore, such as Figure 5 As shown, a tongue 300 is provided between the flow-blocking rib 5 and the annular baffle 3, and the tongue 300, the apex of the protrusion 41, and the water inlet channel 210 are located on the same straight line. The fluid on both sides of the annular baffle 3 is separated by the tongue 300, which can prevent the fluid on both sides from affecting each other, thereby reducing the power loss of the fluid.

[0036] In this embodiment, as Figure 2 As shown, the flow divider 4 and the flow deflector 5 are arranged around the nozzle 100, with the flow deflector 5 located away from the through hole 32. The two ends of the flow divider 4 and the two ends of the flow deflector 5 respectively form a first through-hole 201 and a second through-hole 202, both of which are connected to the nozzle 100. The flow deflector 5, in conjunction with the flow divider 4, can improve the flow rectification effect. When the area around the flow deflector 5 is filled with fluid, it can buffer the fluid at the flow divider 4, reducing the probability of turbulence. The pressurized fluid can flow to the nozzle 100 through the first through-hole 201 or the second through-hole 202, ensuring that the kinetic energy of the fluid can be efficiently transferred to the surrounding low-speed fluid within the cylinder 2, thereby improving the suction power of the pool cleaner.

[0037] Specifically, such as Figure 1 and Figure 2 As shown, both the flow divider 4 and the flow baffle 5 are arc-shaped. The arc-shaped flow divider 4 directs the fluid at the through hole 32 to flow along the tangential direction of the annular baffle 3, thus avoiding direct impact of the fluid on the inner wall of the annular baffle 3, which would cause eddies and pressure loss. In addition, the arc-shaped contour can also guide the fluid to smoothly change direction and eliminate turbulence. The inner contours of the flow divider 4 and the flow baffle 5 cooperate to form a flow guide cavity, in which multiple flow guide ribs 400 are arranged at equal intervals along the periphery of the suction port 110. After the first port 201 and the second port 202 are symmetrically arranged, the fluid on both sides can flow more evenly to the nozzle 100. When the fluid passes through the first port 201 or the second port 202, the flow guide ribs 400 can rectify the fluid at the first port 201 and the second port 202 again. By eliminating excess radial and tangential velocity vectors, the fluid energy is highly concentrated in the axial direction, thereby maximizing the effective output power at the nozzle 100.

[0038] In this embodiment, as Figure 3 and Figure 4 As shown, a filter mechanism is installed inside the water inlet channel 210. When garbage or large particles enter the water inlet channel 210, the filter mechanism can block them, preventing the nozzle 100 from clogging and thus improving the machine's operational stability. A water inlet connector 200 is detachably installed on the water inlet channel 210. By installing a water pipe on the water inlet connector 200, fluid from the water pump can be introduced into the water inlet channel 210. In addition, the water inlet channel 210 can also limit the movement of the filter mechanism. When the filter mechanism malfunctions, the water inlet connector 200 can be removed and the filter mechanism can be taken out of the water inlet channel 210.

[0039] Furthermore, such as Figure 2 and Figure 6 As shown, a quick-connect structure is also provided between the mounting base 21 and the annular baffle 3. The quick-connect structure includes a connecting block 31 and a connecting groove 600. The connecting groove 600 is located on the inner side wall of the mounting base 21. The connecting groove 600 is L-shaped and includes a connecting part 601 and a locking part 602. The connecting block 31 is located on the outer side wall of the annular baffle 3. During installation, the connecting block 31 can be inserted into the connecting part 601, and then the mounting base 21 or the suction head 1 can be turned to make the connecting block 31 engage with the locking part 602. When it is necessary to separate the suction head 1 and the cylinder 2, simply turn in the opposite direction to complete the disassembly, thereby improving the installation and disassembly speed of the cylinder 2 and the suction head 1.

[0040] It should be noted that most existing pool cleaners are one-piece structures, requiring sufficiently high precision during manufacturing to meet standards. When a product malfunctions, it is difficult to open the pool cleaner, leading to increased maintenance costs. Furthermore, in existing technologies, the structure between the water inlet channel 210 and the nozzle 100 is relatively simple. When high-speed flowing fluid passes through the nozzle 100, significant velocity differences between different parts can create vortices within the cylinder 2, resulting in low working efficiency.

[0041] The pool cleaner in this application features a modular design. Assembling the components reduces production complexity and allows for targeted maintenance of functional parts, significantly lowering maintenance costs and spare parts inventory. The annular baffle 3, in conjunction with the flow-diverting mechanism, disperses the fluid, reducing turbulent dissipation and further enhancing the suction power of the pool cleaner.

[0042] In this embodiment, as Figure 4As shown, the cylinder 2 includes a throat section 22 and a diffuser section 23. A connection port 24 and a drain port 25 are respectively provided at both ends of the cylinder 2. The suction port 110 extends into the connection port 24. The throat section 22 is located close to the connection port 24. The ratio of the length to the inner diameter of the throat section 22 ranges from 0.3 to 2.5 to ensure that the fluid in the throat section 22 forms a sufficiently developed and stable flow field when entering the diffuser section 23. The diffuser section 23 is connected to the throat section 22, and the wall of the diffuser section 23 expands outward towards the drain port 25 with an expansion angle ranging from 1° to 3.5° to ensure the smoothest flow and minimal energy loss of the fluid during deceleration and pressurization, thereby achieving optimal ejection efficiency.

[0043] Furthermore, such as Figure 1 As shown, the cross-section of the suction section 11 increases from bottom to top. The longitudinal section of the suction section 11 is arc-shaped, and the arc surface chord ratio of the suction section 11 ranges from 0.05 to 0.45. This effectively balances the flow efficiency and adsorption power, ensuring a smooth fluid transition, minimizing the energy loss of the suction port 110, and generating a sufficiently strong negative pressure to provide the necessary power for the effective adsorption of garbage, suspended solids, etc.

[0044] In this embodiment, as Figure 3 and Figure 4 As shown, a hinge seat 500 is provided on the cylinder 2, and a connecting rod 501 is rotatably mounted on the hinge seat 500. In actual operation, the user can connect an extension rod to the connecting rod 501 and adjust the posture of the cleaner according to the pool bottom conditions and their own posture, reducing operational fatigue. Furthermore, the pool cleaner also includes a moving component and a brushing component. The moving component includes multiple rollers 6, which are rotatably mounted on the bottom surface of the suction head 1, changing the sliding friction between the pool cleaner and the pool bottom to rolling friction, thereby improving the service life of the suction head 1. The brushing component includes a brush head 7, which is mounted on the bottom surface of the suction head 1 and can be used in conjunction with the movement of the pool cleaner to scrub the bottom of the pool.

[0045] Furthermore, such as Figure 4 As shown, a mounting part 26 is provided at the end of the cylinder 2 away from the mounting base 21. The mounting part 26 is used to install the collection component. When the waste is discharged from the cylinder 2, it can directly enter the collection component. The collection component includes, but is not limited to, a filter screen. The filter screen can collect the waste in the fluid, and the filtered fluid will flow back into the pool through the filter screen.

[0046] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A pool cleaner, comprising a suction head (1) and a cylinder (2) connected to said suction head (1), characterized in that, The suction head (1) is provided with a suction section (11), and a suction port (110) is provided at the end of the suction section (11). A nozzle (100) is provided between the outer wall of the suction port (110) and the inner wall of the cylinder (2). A sealed pressure chamber is provided between the suction head (1) and the cylinder (2). A flow-dividing mechanism is provided in the pressure chamber. The flow-dividing mechanism includes a flow-dividing rib (4) and a flow-blocking rib (5). A first port (201) and a second port (202) are symmetrically provided between the flow-dividing rib (4) and the flow-blocking rib (5). The first port (201) and the second port (202) are both connected to the nozzle (100). The cylinder (2) or the suction head (1) is provided with a water inlet channel (210), and the pressure chamber is provided with a through hole (32) that communicates with the water inlet channel (210). The pressure chamber is connected to the nozzle (100), and the flow divider (4) is directly opposite the through hole (32).

2. The pool cleaner as described in claim 1, characterized in that, The suction head (1) is provided with an annular baffle (3), the through hole (32) is provided on the annular baffle (3), the cylinder (2) is provided with a mounting seat (21), the mounting seat (21) cooperates with the annular baffle (3) to form the pressure chamber; the annular baffle (3) is coaxially arranged with the suction port (110), and the diversion rib (4) and the flow-blocking rib (5) are both located inside the annular baffle (3).

3. The pool cleaner as described in claim 2, characterized in that, The inner wall of the mounting base (21) is provided with a connecting groove (600), which is L-shaped. The outer wall of the annular baffle (3) is provided with a connecting block (31), which is used to cooperate with the connecting groove (600) to limit the mounting base (21) to be installed on the annular baffle (3).

4. The pool cleaner as described in claim 2, characterized in that, The water inlet channel (210) is directly opposite the through hole (32). The diverting rib (4) is provided with a protrusion (41). The protrusion (41) is V-shaped. The apex of the protrusion (41) is located at the center of the through hole (32). The protrusion (41) is used to guide the fluid into the pressure chamber along the tangential direction of the diverting rib (4).

5. The pool cleaner as described in claim 4, characterized in that, A tongue (300) is provided between the flow-blocking rib (5) and the annular baffle rib (3). The tongue (300), the apex of the protrusion (41), and the water inlet channel (210) are located on the same straight line.

6. The pool cleaner as described in claim 1, characterized in that, Both the diversion rib (4) and the flow-blocking rib (5) are arc-shaped. The diversion rib (4) and the flow-blocking rib (5) cooperate to form a flow-guiding cavity. The first opening (201) and the second opening (202) are both connected to the flow-guiding cavity. Multiple flow-guiding ribs (400) are provided in the flow-guiding cavity. The flow-guiding ribs (400) are arranged at equal intervals along the periphery of the suction port (110).

7. The pool cleaner as described in claim 1, characterized in that, The water inlet channel (210) is equipped with a filter mechanism inside; the water inlet channel (210) is detachably installed with a water inlet connector (200).

8. The pool cleaner as described in claim 1, characterized in that, The cylinder (2) includes a throat section (22) and a diffuser section (23). The two ends of the cylinder (2) are respectively provided with a connection port (24) and a drain port (25). The suction port (110) extends into the connection port (24). The throat section (22) is close to the connection port (24). The ratio of the length of the throat section (22) to its inner diameter is in the range of 0.3 to 2.

5. The diffuser section (23) is connected to the throat section (22). The wall of the diffuser section (23) expands outward toward the drain port (25) with an expansion angle in the range of 1° to 3.5°.

9. The pool cleaner as described in claim 1, characterized in that, The cross-section of the suction section (11) increases sequentially from bottom to top, the longitudinal section of the suction section (11) is arc-shaped, and the arc surface chord ratio of the suction section (11) ranges from 0.05 to 0.

45.

10. The pool cleaner as claimed in claim 1, characterized in that, The cylinder (2) is provided with a hinge seat (500), and a connecting rod (501) is rotatably mounted on the hinge seat (500). The connecting rod (501) is provided with a insertion cavity for inserting an extension rod.

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