POOL CLEANER

Description

CROSS-REFERENCE TO THE RELATED APPLICATIONS

This application is based upon and claims priority to Chinese Patent Application No. 202423083900.5, filed on Dec. 13, 2024; Chinese Patent Application No. 202520343086.1, filed on Feb. 28, 2025; Chinese Patent Application No. 202521547531.2, filed on Jul. 23, 2025; and Chinese Patent Application No. 202522199454.2, filed on Nov. 17, 2025, the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to the technical field of cleaners, and in particular to a pool cleaner.

BACKGROUND

As a fitness and recreational activity enjoyed by many people, swimming can enhance overall physical fitness of people and enrich people's lives. With the gradual improvement of people's material living standards, family pools are increasingly appearing in residential courtyards. Since pool hygiene can significantly impact swimmers'health, regular pool cleaning is undoubtedly essential. However, the large area and depth of pools make manual cleaning highly cumbersome. Consequently, demand for pool cleaning products continues to grow.

In the prior art, the water pump of the pool cleaner is usually connected to a suction tube to draw contaminated water from the pool floor. However, during operation, fine debris such as hair commonly found at the pool floor may entangle the impeller, thereby affecting normal operation of the pool cleaner.

SUMMARY

An objective of the present disclosure is to provide a pool cleaner to reduce the risk of hair entanglement on an impeller.

The present disclosure adopts the following technical solutions. A pool cleaner includes a housing, a water pump, a power supply, and a switch for controlling start/stop of the water pump, where the power supply is electrically connected to the water pump; a lower portion of the housing is provided with a suction port; the housing is provided with a discharge port and a water inlet; the suction port and the discharge port communicate with each other via a tube; the water inlet communicates with a water discharge passage; the water discharge passage communicates with the tube; the water pump is configured to drive liquid flow from the water inlet to the water discharge passage; the housing is internally provided with a first chamber; and the water pump is at least partially located in the first chamber.

In some embodiments of the present disclosure, a mesh bag is disposed outside the housing; the mesh bag communicates with the discharge port; the mesh bag is sleeved on the housing; an open end of the mesh bag is lower than the water inlet; the open end of the mesh bag is connected to an outer surface of the housing; the mesh bag is in close contact with the outer surface of the housing through a connecting part to form two parts that are non-communicated, and the two parts are respectively in communication with the discharge port and the water inlet.

In some embodiments of the present disclosure, a suction nozzle is disposed between the tube and the suction port; the suction nozzle includes one end communicating with the suction port and the other end extending into the tube; and the water discharge passage is disposed between the suction nozzle and the tube.

Furthermore, the suction nozzle is annular; a cross-sectional area of the suction nozzle decreases gradually from bottom to top; a portion of the suction nozzle penetrates the tube; the water discharge passage is annular; an outer surface of the suction nozzle is provided with a support rib; and the support rib conforms to an inner surface of the tube.

Furthermore, the suction nozzle is detachably connected to the housing; and a gap is formed between the suction nozzle and the tube to define the water discharge passage.

In some embodiments of the present disclosure, the tube includes a lower section and an upper section; a bottom end of the lower section communicates with the suction port; a top end of the upper section communicates with the discharge port; a top end of the lower section is connected to a bottom end of the upper section; a cross-sectional area of the lower section decreases gradually from bottom to top; and a cross-sectional area of the upper section increases gradually from bottom to top.

In some embodiments of the present disclosure, the power supply includes a built-in battery pack; the built-in battery pack is located directly below the water pump; the housing is provided with a charging connector; the charging connector is electrically connected to the built-in battery pack; and the switch includes a sealed push switch, or a remote control switch, or a Hall sensor and an induction magnet cooperating with each other.

In some embodiments of the present disclosure, the water pump includes a motor and an impeller disposed on an output end of the motor; the impeller is configured to drive the fluid flow from the water inlet to the water discharge passage; the first chamber includes a mounting chamber and a working chamber separated from each other; the mounting chamber is configured to accommodate the motor and electric components; the working chamber is configured to accommodate a fluid; and the impeller is located in the working chamber.

Furthermore, the working chamber includes a water intake chamber and a water discharge chamber separated from each other; the water intake chamber is located above the mounting chamber; the water intake chamber and the water discharge chamber communicate with each other via a through-hole; the water inlet communicates with the water intake chamber; the water discharge passage communicates with the water discharge chamber; the through-hole is located above the water discharge chamber; and the water discharge passage is located below the water discharge chamber.

Furthermore, the water intake chamber is internally provided with a volute section; the volute section is provided with a volute-shaped cross-section; the volute section includes an outlet connected to the through-hole and an inlet communicating with the water inlet; and the impeller is located at the inlet of the volute section.

In some embodiments of the present disclosure, the pool cleaner further includes a telescopic handle; the handle is rotatably connected to the housing; and a bottom of the housing is provided with a roller and a brush.

The pool cleaner of the present disclosure has the following advantages. 1. No additional components such as impeller are disposed inside the entire tube, allowing large particles to pass smoothly and eliminating concerns about hair on the pool floor becoming entangled on the impeller, ensuring normal operation of the impeller.

2. The housing holds components such as the motor, the built-in battery pack, and the switch, concentrating most of the weight inside the housing. During operation, the housing is submerged in water and subjected to buoyancy, reducing the user's burden for handheld use.

3. The detachable design of the suction nozzle enables easy cleaning of the suction nozzle. Debris may also accumulate between the suction nozzle and the tube, clogging the water discharge passage. Since the suction nozzle is detachable, the cleaning is convenient.

4. The water discharge passage is annular, allowing upward water flow along a wall of the tube, thereby ensuring balanced bottom suction.

5. The bottom of the housing is provided with a roller to facilitate movement on the pool floor and a brush to scrub debris at the pool floor.

A pool cleaner includes a housing and a water pump, where the housing is provided with a water inlet and a suction port separated from each other; the housing is further provided with a discharge port; the suction port and the discharge port communicate with each other; a water discharge passage is disposed between the suction port and the discharge port; a water discharge direction of the water discharge passage faces the discharge port; the water discharge passage communicates with the water inlet; the water inlet serves as a water inlet of the water pump; the water inlet and the suction port are not located on a same plane of the housing; and the water inlet is provided with a filter unit.

Compared with the prior art, the present disclosure has the following advantages. Due to the mutually separated design between the water inlet and the suction port, they have little influence on each other. Because the water inlet is separated, debris will not clog the water inlet, ensuring the water intake effect. Meanwhile, the flow velocity can be increased by reducing the area. Alternatively, the water inlet is grating-shaped to reduce debris ingress, ensuring stable operation of internal components such as the water pump. The suction port can still adopt a wide-opening design, without affecting the suction effect.

In some embodiments of the present disclosure, a mesh bag is disposed outside the housing; the mesh bag communicates with the discharge port; the mesh bag is sleeved on the housing; an open end of the mesh bag is lower than the water inlet; the open end of the mesh bag is connected to an outer surface of the housing; the mesh bag is in close contact with the outer surface of the housing through a connecting part to form two parts that are non-communicated, and the two parts are respectively in communication with the discharge port and the water inlet; and the filter unit is a filter screen.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a first structural schematic diagram according to Embodiment 1 of the present disclosure;

FIG. 2 is a second structural schematic diagram according to Embodiment 1 of the present disclosure;

FIG. 3 is a first structural schematic diagram according to Embodiment 1 of the present disclosure, where a handle and a mesh bag are not shown in the figure;

FIG. 4 is a second structural schematic diagram according to Embodiment 1 of the present disclosure, where the handle and the mesh bag are not shown in the figure;

FIG. 5 is a structural schematic diagram of a suction nozzle according to Embodiment 1 of the present disclosure;

FIG. 6 is a sectional view taken along A-A direction shown in FIG. 3;

FIG. 7 is a sectional view taken along B-B direction shown in FIG. 3;

FIG. 8 is a structural schematic diagram according to Embodiment 3 of the present disclosure;

FIG. 9 is a structural schematic diagram according to Embodiment 3 of the present disclosure, where a handle and a mesh bag are not shown in the figure;

FIG. 10 is a sectional view according to Embodiment 3 of the present disclosure, where the handle and the mesh bag are not shown in the figure; and

FIG. 11 is a sectional view taken along C-C direction shown in FIG. 10.

Reference Numerals: 1. housing; 2. motor; 3. first chamber; 4. suction port; 5. discharge port; 6. water inlet; 7. tube; 8. water discharge passage; 9. impeller; 10. mesh bag; 11. connecting part; 12. suction nozzle; 13. support rib; 14. lower section; 15. upper section; 16. built-in battery pack; 17. charging connector; 18. Hall sensor; 19. induction magnet; 20. mounting chamber; 21. working chamber; 22. water intake chamber; 23. water discharge chamber; 24. through-hole; 25. volute section; 26. handle; 27. roller; 28. brush; 29. positioning plate; 30. positioning groove; 31. first partition; 32. second partition; 33. filter screen; and 34. water pump.

DETAILED DESCRIPTION OF THE EMBODIMENTS

To further describe the technical means adopted by the present disclosure to achieve the intended purpose and the effects of the technical means, the specific implementations, structures, features, and effects of the present disclosure are described in detail below with reference to the drawings and preferred embodiments.

Embodiment 1

An embodiment provides a pool cleaner. As shown in FIGS. 1 and 2, the cleaner includes housing 1, a water pump 34, a power supply, and a switch for controlling start/stop of the water pump 34. The housing 1 is internally provided with first chamber 3. The first chamber 3 is internally provided with the water pump 34. The power supply is electrically connected to the water pump 34. The housing 1 includes a lower portion provided with suction port 4 and an upper portion provided with discharge port 5 and water inlet 6. The suction port 4 and the discharge port 5 communicate with each other via tube 7. The water inlet 6 communicates with the water discharge passage 8. The water discharge passage 8 communicates with the tube 7. The water pump 34 is configured to drive liquid flow from the water inlet 6 to the water discharge passage 8. In this embodiment, the switch is located on an outer surface of the housing 1. The suction port 4 is located at a bottom of the housing 1. The discharge port 5 is located at a top of the housing 1. The suction port 4 and the discharge port 5 are concentrically arranged. The water inlet 6 is grating-shaped to block debris ingress. A water discharge direction of the water discharge passage 8 faces the discharge port 5.

No additional components such as impeller 9 are disposed inside the entire tube 7, allowing large particles to pass smoothly and eliminating concerns about hair in water becoming entangled on the impeller 9, ensuring normal operation of the impeller 9. The housing 1 holds components such as a motor 2, the power supply, and the switch, concentrating most of the weight on the housing 1. During operation, the housing 1 is submerged in water and subjected to buoyancy, reducing the user's burden for handheld use.

the housing 1 can consist of multiple parts, such as being formed by the combination of a main housing with multiple sub-housings, or directly by the combination of multiple sub-housings; mounting chamber 20 can be formed by the combination of some of the sub-housings with the main housing, or by the combination of parts of multiple sub-housings.

To facilitate debris collection, mesh bag 10 is disposed outside the housing 1. The mesh bag 10 communicates with the discharge port 5. The mesh bag 10 is sleeved on the housing 1. An open end of the mesh bag 10 is lower than the water inlet 6. The open end of the mesh bag 10 is connected to an outer surface of the housing 1. The mesh bag 10 is in close contact with the outer surface of the housing 1 through connecting part 11 to form two parts that are non-communicated, and the two parts are respectively in communication with the discharge port 5 and the water inlet 6. The mesh bag 10 can easily collect debris discharged from the discharge port 5. Since the open end of the mesh bag 10 is lower than the water inlet 6, water entering the water inlet 6 first passes through the mesh bag 10. The mesh bag 10 can block debris, thereby reducing debris ingress into the water inlet 6 and preventing clogging. Through the connecting part 11, the collected debris at the bottom of the mesh bag 10 are prevented from leaking to the open end of the mesh bag 10, maintaining cleanliness of the open end of the mesh bag 10 and blocking debris ingress into the water inlet 6. Meanwhile, the connecting part 11 can secure the mesh bag 10 against accidental detachment.

In this embodiment, the connecting part 11 is configured as a retaining ring. The retaining ring is located between the discharge port 5 and the water inlet 6. The retaining ring conforms to the outer surface of the housing 1. Certainly, the connecting part 11 can also be formed by the elasticity of the mesh bag 10 itself or with its own elastic rope.

To facilitate cleaning, suction nozzle 12 is disposed between the tube 7 and the suction port 4. The suction nozzle 12 is detachably connected to the housing 1. The suction nozzle 12 includes one end communicating with the suction port 4 and the other end extending into the tube 7. A gap is formed between the suction nozzle 12 and the tube 7 to define the water discharge passage 8. During operation, the suction nozzle 12 contacts frequently with the pool floor and can easily accumulate debris. The detachable design of the suction nozzle 12 enables easy cleaning of the suction nozzle 12. Debris may also accumulate between the suction nozzle 12 and the tube 7, clogging the water discharge passage 8. Since the suction nozzle 12 is detachable, the cleaning is convenient.

To ensure reliability of the suction nozzle 12, as shown in FIG. 5, the suction nozzle 12 is annular. A cross-sectional area of the suction nozzle 12 decreases gradually from bottom to top. The larger bottom cross-section covers more area for efficient debris suction from the pool floor, and the smaller top cross-section increases the flow velocity to propel debris toward the discharge port 5. A portion of the suction nozzle 12 penetrates the tube 7. The water discharge passage 8 is annular, allowing upward water flow along a wall of the tube 7, thereby ensuring balanced bottom suction. The outer surface of the suction nozzle 12 is provided with support rib 13. The support rib 13 conforms to an inner surface of the tube 7. During operation, the operation of the motor 2, the rotation of the impeller 9, and the water flow causes vibrations inside. The support rib 13 plays a role in supporting the tube 7, thereby stabilizing the water discharge passage 8 and preventing deformation of the water discharge passage 8 caused by shaking. Additionally, the support rib 13 reinforces structural strength of the suction nozzle 12.

As shown in FIG. 4, in this embodiment, the suction nozzle 12 is provided with outwardly extending positioning plate 29. A bottom surface of the housing 1 is provided with positioning groove 30. The positioning plate 29 engages with the positioning groove 30. Therefore, the mounting and positioning of the suction nozzle 12 is simple and reliable. The positioning plate 29 is bolted to the housing 1.

To ensure reliability of the tube 7, as shown in FIG. 3, the tube 7 includes lower section 14 and upper section 15. A bottom end of the lower section 14 communicates with the suction port 4. A top end of the upper section 15 communicates with the discharge port 5. A top end of the lower section 14 is connected to a bottom end of the upper section 15. A cross-sectional area of the lower section 14 decreases gradually from bottom to top. The larger bottom cross-section of the lower section 14 covers more area and enhances debris suction from the pool floor. The tube is combined with the suction nozzle 12 to form the water discharge passage 8 with a large area for sufficient water inflow and enhanced debris propulsion by the water inflow. The smaller top cross-section of the lower section 14 increases the flow velocity to propel the debris toward the discharge port 5. A cross-sectional area of the upper section 15 increases gradually from bottom to top. The increasing design in the cross-sectional area of the upper section 15 facilitates debris dispersion and discharge from the discharge port 5, thereby preventing debris concentrated and preventing clogging at the discharge port 5.

In this embodiment, the tube 7 is a straight tube. Water flows linearly without directional changes, minimizing flow impact and energy waste in the tube 7. Of course, the tube 7 may be a curved tube such that the discharge port 5 is located at a side surface of the housing 1.

To ensure power supply reliability, the power supply includes built-in battery pack 16. The built-in battery pack 16 is located directly below the motor 2. Charging connector 17 penetrates the housing 1. The charging connector 17 is electrically connected to the built-in battery pack 16. The switch includes a sealed push switch, or a remote control switch, or Hall sensor 18 and induction magnet 19 cooperating with each other. In this embodiment, the switch includes Hall sensor 18 and induction magnet 19 cooperating with each other. The Hall sensor 18 is located in the first chamber 3 and electrically connected to the motor 2. The induction magnet 19 is located outside the housing 1 and slidably connected to the housing 1. The Hall sensor 18 is located in mounting chamber 20. Pools are generally disposed outdoors, with power supplied via a cable. This necessitates a socket and a long cable, causing usage and storage inconvenient. The built-in battery pack 16 facilitates mobile use of the pool cleaner, eliminating concerns about power availability. The built-in battery pack 16 is concentrated inside the housing 1, making overall weight concentrated on the housing 1. When in use, the housing 1 is submerged in water and subjected to buoyancy, making it convenient for the user to move the pool cleaner. The charging connector 17 is configured to connect an external power supply for charging the built-in battery pack 16. The charging connector 17 uses a waterproof interface, which is prior art and will not be detailed here. The Hall sensor 18 cooperates with the induction magnet 19, eliminating the need to perforate the housing 1 for the switch, reducing leakage risks.

To ensure reliability of the water pump 34, the water pump 34 includes the motor 2 and the impeller 9 disposed on an output end of the motor 2. The impeller 9 is configured to drive the fluid flow from the water inlet 6 to the water discharge passage 8.

To ensure reliability of the first chamber 3, the first chamber 3 includes mounting chamber 20 and working chamber 21 separated by first partition 31. The mounting chamber 20 is configured to accommodate the motor 2, the power supply, and the switch. The working chamber 21 is configured to accommodate a fluid. The impeller 9 is located in the working chamber 21. A wall of the mounting chamber 20 is connected to the outer surface of the housing 1, allowing the charging connector 17 to directly enter the mounting chamber 20 through the housing 1, thereby minimize leakage risks. The separate design of the mounting chamber 20 reduces probability of water entering the mounting chamber 20, ensuring safety of the motor 2 and the built-in battery pack 16 in the mounting chamber 20.

To ensure reliability of the working chamber 21, as shown in FIGS. 6 and 7, the working chamber 21 includes water intake chamber 22 and water discharge chamber 23 separated by second partition 32. The water intake chamber 22 is located above the mounting chamber 20. The water intake chamber 22 and the water discharge chamber 23 communicate with each other via through-hole 24. The water inlet 6 communicates with the water intake chamber 22. The water discharge passage 8 communicates with the water discharge chamber 23. The through-hole 24 is located above the water discharge chamber 23. The water discharge passage 8 is located below the water discharge chamber 23. Due to the separate design of the water intake chamber 22, the water flow from the water inlet 6 is first concentrated in the water intake chamber 22, facilitating the impeller 9 to propel the liquid. The water intake chamber 22 is located at an upper position. The water at the upper position is cleaner than the water at the lower position, which can reduce the chance of debris entering from the water inlet 6 and prevent the water inlet 6 from clogging. Water enters the water discharge chamber 23 through the through-hole 24 above and is discharged from the water discharge passage 8 below. The liquid moves from top to bottom and flows out through the water discharge passage 8. The overall pressure is uniform, ensuring even water discharge from the water discharge passage 8.

In this embodiment, the water intake chamber 22 is located directly above the mounting chamber 20. The tube 7 is beside the mounting chamber 20, achieving a compact structure and reducing the overall volume.

To ensure reliability of the water intake chamber 22, the water intake chamber 22 is internally provided with volute section 25. The volute section 25 is provided with a volute-shaped cross-section. The volute section 25 includes an outlet connected to the through-hole 24 and an inlet communicating with the water inlet 6. The impeller 9 is located at the inlet of the volute section 25. The volute section 25 is located at a top of the water intake chamber 22. The volute section 25 cooperates with the impeller 9, providing reliable propulsion for water flow, thereby ensuring effective water intake. The liquid enters from the water inlet 6 and first reaches the lower portion of the water intake chamber 22. The debris settles under gravity to the bottom of the water intake chamber 22, thereby reducing debris ingress. The liquid in the upper portion of the water intake chamber 22 enters the volute section 25 driven by the impeller 9, and enters the water discharge chamber 23 after being pressurized by the volute section 25.

To facilitate mobility, the pool cleaner further includes telescopic handle 26. The handle 26 is rotatably connected to the housing 1. The handle 26 facilitates the user in moving the pool cleaner in the pool from the poolside, and its telescopic design facilitates storage while expanding the movement range. The bottom of the housing 1 is provided with roller 27 for convenient movement of the pool cleaner on the pool floor. The bottom of the housing 1 is provided with brush 28. The brush 28 is configured to scrub debris on the pool floor.

In this embodiment, the housing 1 includes a lower portion in a triangular shape and an upper portion in a cylindrical shape. A cross-sectional area of the lower portion of the housing 1 is larger than that of the upper portion of the housing 1. Due to the larger cross-sectional area of the lower portion of the housing 1, the bottom of the pool cleaner is stable, preventing the pool cleaner from toppling over in the pool. The cylindrical design of the upper portion of the housing 1 reduces the resistance encountered by the pool cleaner when moving in the pool.

During use, the motor 2 drives the impeller 9 to rotate. The impeller 9 propels the liquid in the volute section 25 into the water discharge chamber 23. The volute section 25 creates a negative pressure, facilitating the extraction of the liquid from the water intake chamber 22 for replenishment. The water intake chamber 22 draws the liquid from the outside through the water inlet 6 for replenishment. The liquid entering the water discharge chamber 23 flows from top down, and the debris in the liquid is settled to the bottom due to gravity. The water discharge passage 8 is positioned higher than the bottom of the suction nozzle 12 to reduce debris passing through the water discharge passage 8. The liquid passing through the water discharge passage 8 moves upward along the tube 7, driving the liquid inside the tube 7 to move from the suction port 4 toward the discharge port 5. Thus, the suction port 4 can continuously draw surrounding debris.

Embodiment 2

This embodiment provides a pool cleaner. As shown in FIGS. 1, 3, and 4, the pool cleaner includes housing 1. The housing 1 is provided with mutually separated water inlet 6 and suction port 4. The housing 1 is further provided with discharge port 5. The suction port 4 and the discharge port 5 communicate with each other. water discharge passage 8 is disposed between the suction port 4 and the discharge port 5. A water discharge direction of the water discharge passage 8 faces the discharge port 5. The water discharge passage 8 communicates with the water inlet 6.

Due to the mutually separated design between the water inlet 6 and the suction port 4, they have little influence on each other. If the water inlet 6 and the suction port 4 are the same, it is prone to clogging when there is a large amount of debris, affecting water intake. In this embodiment, because the water inlet 6 is separated, debris will not clog the water inlet 6, ensuring the water intake effect. Meanwhile, the flow velocity can be increased by reducing the area. Alternatively, the water inlet 6 is grating-shaped to reduce debris ingress, ensuring stable operation of internal components such as the water pump 34. The suction port 4 can still adopt a wide-opening design, without affecting the suction effect.

To facilitate debris collection, mesh bag 10 is disposed outside the housing 1. The mesh bag 10 communicates with the discharge port 5. The mesh bag 10 is sleeved on the housing 1. An open end of the mesh bag 10 is lower than the water inlet 6. The open end of the mesh bag 10 is connected to an outer surface of the housing 1. The mesh bag 10 is in close contact with the outer surface of the housing 1 through connecting part 11 to form two parts that are non-communicated, and the two parts are respectively in communication with the discharge port 5 and the water inlet 6. The mesh bag 10 can easily collect debris discharged from the discharge port 5. Since the open end of the mesh bag 10 is lower than the water inlet 6, water entering the water inlet 6 first passes through the mesh bag 10. The mesh bag 10 can block debris, thereby reducing debris ingress into the water inlet 6 and preventing clogging. Through the connecting part 11, the collected debris at the bottom of the mesh bag 10 are prevented from leaking to the open end of the mesh bag 10, maintaining cleanliness of the open end of the mesh bag 10 and blocking debris ingress into the water inlet 6. Meanwhile, the connecting part 11 can secure the mesh bag 10 against accidental detachment.

In this embodiment, the connecting part 11 is configured as a retaining ring. The retaining ring is located between the discharge port 5 and the water inlet 6. The retaining ring conforms to the outer surface of the housing 1. Certainly, the connecting part 11 can also be formed by the elasticity of the mesh bag 10 itself or with its own elastic rope.

The pool cleaner further includes a water pump 34, a power supply, and a switch for controlling start/stop of the water pump 34. The housing 1 is internally provided with first chamber 3. The first chamber 3 is internally provided with the water pump 34. The power supply is electrically connected to the water pump 34. The housing 1 includes a lower portion provided with suction nozzle 12. The suction nozzle 12 and discharge port 5 communicate with each other via tube 7. One end of the suction nozzle 12 extends into the tube 7. A gap is formed between the suction nozzle 12 and the tube 7 to define water discharge passage 8. The other end of the suction nozzle 12 is provided with suction port 4. The water discharge passage 8 communicates with the tube 7. The water pump 34 is configured to drive liquid flow from the water inlet 6 to the water discharge passage 8. In this embodiment, the switch is located on an outer surface of the housing 1. The suction port 4 is located at a bottom of the housing 1. The discharge port 5 is located at a top of the housing 1. The suction port 4 and the discharge port 5 are concentrically arranged. The water inlet 6 is grating-shaped to block debris ingress. The water inlet 6 serves as a water inlet of the water pump 34. The water inlet 6 and the suction port 4 are not located on a same plane of the housing 1. The water inlet 6 is located at a side of the upper portion of the housing 1. The water inlet 6 is separated from the suction port 4, and the water inlet 6 will not draw contaminated water.

Embodiment 3

This embodiment provides a pool cleaner. As shown in FIGS. 8 to 11, the tube 7 is disposed perpendicularly to the motor 2. That is, the axial direction of the tube 7 is perpendicular to the axial direction of the motor 2, thereby reducing the overall height. Filter screen 33 is disposed inside the water inlet 6. The remaining features of this embodiment are identical to those of Embodiment 1. The water inlet 6 is grating-shaped and forms a filter unit together with the filter screen 33.

In this embodiment, the built-in battery pack 16 is semicircular and located between the motor 2 and the housing 1.

The above embodiments are only preferred embodiments of the present disclosure, and are not intended to limit the present disclosure in any form. Although the present disclosure is disclosed through the above preferred embodiments, these preferred embodiments are not intended to limit the present disclosure. Any person skilled in the art may make some changes or modifications to the above technical contents without departing from the scope of the technical solution of the present disclosure. However, such changes or modifications should be deemed as equivalent embodiments of the present disclosure. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present disclosure without departing from the content of the technical solution of the present disclosure should fall within the scope of the technical solution of the present disclosure.