Swimming pool cleaner

Abstract

The swimming pool cleaner comprises a shell, a water pump, a power source and a switch used for controlling starting and stopping of the water pump, the water pump is arranged on the shell, and the power source is electrically connected with the water pump; a dirt suction head is arranged on the lower portion of the shell, a dirt outlet and a water inlet are formed in the shell, the dirt suction head and the dirt outlet are communicated through a Venturi tube, one end of the dirt suction head extends into the Venturi tube, a water outlet channel is arranged between the dirt suction head and the Venturi tube, a dirt suction opening is formed in the other end of the dirt suction head, and the water inlet is communicated with the water outlet channel. The water outlet channel is communicated with the Venturi tube; the water pump is used for driving liquid to flow from the water inlet to the water outlet channel. The swimming pool cleaner has the following advantages that one end of the dirt suction head extends into the Venturi tube, so that water discharged from the water outlet channel can be prevented from reversely flowing into the dirt suction head; no impeller or other parts are arranged in the whole venturi tube channel, so that large-particle articles can smoothly pass through, hair in water does not need to be wound on the water pump, and normal work of the water pump is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of cleaners, in particular to a swimming pool cleaner. Background Art

[0002] Swimming is a fitness and recreational activity that many people like. It not only improves people's overall physical fitness but also enriches their lives. With the gradual improvement of people's material living standards, more and more family swimming pools appear in people's courtyards. The hygiene of the swimming pool is greatly related to the health of swimmers. Regular cleaning of the swimming pool is undoubtedly an important thing. However, the swimming pool is large in area and has a certain depth. Manual cleaning is very troublesome, so people's demand for swimming pool cleaning products is also increasing.

[0003] In the prior art, for example, Chinese invention patent publication number CN217975615U discloses a swimming pool cleaner, including a cleaner housing, a pump chamber and a motor chamber provided in the cleaner housing; the pump chamber is a channel for sewage suction; a power supply assembly and a drive motor are provided in the motor chamber, an impeller is connected to the drive motor, the impeller is located in the pump chamber, and the drive motor is connected to the power supply assembly; the power supply assembly includes a battery and a Hall element, the battery is electrically connected to the Hall element, a power switch is provided on the cleaner housing, a magnet is provided on the power switch, and the magnet and the Hall element are sensed or disconnected by controlling the power switch to start or shut down the cleaner. There are often fine dirt such as hair at the bottom of the swimming pool, and the impeller of the swimming pool cleaner is provided in the pump chamber. During use, fine dirt such as hair may pass through the filter and enter the pump chamber, and then be entangled on the impeller, affecting the normal operation of the swimming pool cleaner. Summary of the invention

[0004] An object of the present application is to provide a swimming pool cleaner that can reduce the risk of hair or the like being entangled in an impeller.

[0005] The technical solution adopted in the present application is: a swimming pool cleaner, comprising a shell, a water pump, a power supply and a switch for controlling the start and stop of the water pump, the water pump is arranged on the shell, and the power supply is electrically connected to the water pump; a sewage suction head is arranged at the lower part of the shell, a sewage outlet and a water inlet are arranged on the shell, the sewage suction head and the sewage outlet are connected through a venturi tube, one end of the sewage suction head extends into the venturi tube, a water outlet channel is arranged between the sewage suction head and the venturi tube, a sewage suction port is arranged at the other end of the sewage suction head, the water inlet is connected to the water outlet channel, and the water outlet channel is connected to the venturi tube; the water pump is used to drive the liquid to flow from the water inlet to the water outlet channel.

[0006] In some embodiments of the present application, a net bag is provided outside the shell, and the net bag is connected to the sewage outlet; the net bag is mounted on the shell, the opening end of the net bag is lower than the water inlet, and the opening end of the net bag is connected to the outer surface of the shell; the net bag includes a fastening ring, the fastening ring is located between the sewage outlet and the water inlet, and the fastening ring is in contact with the outer surface of the shell.

[0007] In some embodiments of the present application, the suction head is detachably connected to the shell.

[0008] In some embodiments of the present application, the suction head is annular, and the cross-sectional area of ​​the suction head gradually decreases from bottom to top; part of the suction head is passed through the Venturi tube, and a gap is left between the suction head and the Venturi tube to form a water outlet channel; the water outlet channel is annular; support ribs are provided on the outer surface of the suction head, and the support ribs are in contact with the inner surface of the Venturi tube.

[0009] In some embodiments of the present application, the venturi tube includes a lower section and an upper section, the bottom end of the lower section is connected to the sewage suction port, the top end of the upper section is connected to the sewage outlet, and the top end of the lower section is connected to the bottom end of the upper section; the cross-sectional area of ​​the lower section gradually decreases from bottom to top, and the cross-sectional area of ​​the upper section gradually increases from bottom to top.

[0010] In some embodiments of the present application, the power supply includes a built-in battery pack, which is located directly below the water pump. A charging connector is provided on the shell, and the charging connector is electrically connected to the built-in battery pack; the switch adopts a sealed push switch or a remote control switch or a Hall sensor and an induction magnet that cooperate with each other.

[0011] In some embodiments of the present application, the water pump includes a motor and an impeller installed at the output end of the motor, the impeller is used to drive the fluid to flow from the water inlet to the water outlet; a first cavity is provided in the shell, the first cavity includes an installation cavity and a working cavity separated from each other, the installation cavity is used to install the motor, power supply and switch, the working cavity is used to accommodate the fluid, and the impeller is located in the working cavity; the cavity wall of the installation cavity is connected to the outer surface of the shell.

[0012] Furthermore, the working chamber includes a water inlet chamber and a water outlet chamber separated from each other, the water inlet chamber is located above the installation chamber, the water inlet chamber and the water outlet chamber are connected by a through hole, the water inlet is connected to the water inlet chamber, and the water outlet channel is connected to the water outlet chamber; the through hole is located above the water outlet chamber, and the water outlet channel is located below the water outlet chamber.

[0013] Furthermore, a volute portion is provided in the water inlet chamber, the cross section of the volute portion is volute-shaped, the outlet of the volute portion is connected to the through hole, the inlet of the volute portion is connected to the water inlet, and the impeller is located at the inlet of the volute portion.

[0014] In some embodiments of the present application, a retractable handle is further included, which is rotatably connected to the shell; a roller is provided at the bottom of the shell; and a brush is provided at the bottom of the shell.

[0015] The swimming pool cleaner obtained by the present invention has the following advantages: 1. There is no impeller or other components in the entire venturi tube channel, so that large particles can pass smoothly, and there is no need to worry about hair on the bottom of the pool being entangled on the impeller, thus ensuring the normal operation of the impeller;

[0016] 2. The housing is equipped with a motor, a built-in battery pack, and a switch, etc. The weight is mainly concentrated in the housing, and the housing is partially submerged in water when in use, which is affected by buoyancy, thus reducing the burden on the user when holding the device in hand.

[0017] 3. The detachable design of the suction head makes it easy to remove the suction head for cleaning. At the same time, dirt is easily accumulated between the suction head and the Venturi tube, causing the water outlet channel to be blocked. The detachable suction head is also convenient for cleaning;

[0018] 4. The water outlet channel is annular, so that the water flow can move upward around the wall of the Venturi tube, and the suction force on the bottom is more balanced;

[0019] 5. There are rollers and brushes at the bottom of the shell, which can facilitate the cleaner to move on the bottom of the pool and wash away the attachments on the bottom of the pool.

[0020] A swimming pool cleaner comprises a shell, wherein a water inlet and a sewage suction port separated from each other are provided on the shell, and a sewage outlet is also provided on the shell, the sewage suction port and the sewage outlet are connected, a water outlet channel is provided between the sewage suction port and the sewage outlet, the water outlet direction of the water outlet channel is toward the sewage outlet, and the water outlet channel is connected with the water inlet.

[0021] Compared with the prior art, the advantage of the present application is that the water inlet and the sewage suction port are designed to be separated from each other, the influence between water inlet and sewage suction is small, and after the water inlet is separated, the sewage will not block the water inlet, thereby ensuring the water inlet effect. At the same time, the area can be reduced to increase the flow rate, or the water inlet can adopt a grid shape to reduce the entry of sewage into the interior, thereby ensuring the stable operation of internal components such as the water pump, and the sewage suction port can still adopt a large opening design without affecting the sewage suction effect.

[0022] In some embodiments of the present application, a net bag is provided outside the shell, and the net bag is connected to the sewage outlet; the net bag is mounted on the shell, the opening end of the net bag is lower than the water inlet, and the opening end of the net bag is connected to the outer surface of the shell; the net bag includes a fastening ring, the fastening ring is located between the sewage outlet and the water inlet, and the fastening ring is in contact with the outer surface of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

[0024] Figure 2 is a cross-sectional view of embodiment 1 of the present invention;

[0025] Figure 3is a schematic structural diagram of Embodiment 1 of the present invention without the handle and the net bag;

[0026] Figure 4 is a cross-sectional view of Example 1 of the present invention without the handle and the net bag;

[0027] Figure 5 yes Figure 4 Cross-sectional view in the AA direction;

[0028] Figure 6 Schematic diagram of the structure of the sewage suction head of embodiment 1 of the present invention;

[0029] Figure 7 yes Figure 4 Cross-sectional view along the BB direction.

[0030] In the figure: 1. shell; 2. motor; 3. first cavity; 4. sewage suction port; 5. sewage outlet; 6. water inlet; 7. venturi tube; 8. water outlet channel; 9. impeller; 10. net bag; 11. fastening ring; 12. sewage suction head; 13. supporting ribs; 14. lower section; 15. upper section; 16. built-in battery pack; 17. charging connector; 18. Hall sensor; 19. induction magnet; 20. installation cavity; 21. working cavity; 22. water inlet cavity; 23. water outlet cavity; 24. through hole; 25. volute; 26. handle; 27. roller; 28. brush; 29. ​​positioning plate; 30. positioning groove; 31. first partition; 32. second partition. DETAILED DESCRIPTION

[0031] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0032] Embodiment 1:

[0033] This embodiment provides a swimming pool cleaner, such as Figure 1 , Figure 2As shown, it includes a shell 1, a water pump, a power supply and a switch for controlling the start and stop of the water pump. A first cavity 3 is provided in the shell 1, the water pump is located in the first cavity 3, and the power supply is electrically connected to the water pump; a sewage suction head 12 is provided at the lower part of the shell 1, and a sewage outlet 5 and a water inlet 6 are provided at the upper part of the shell 1. The sewage suction head 12 and the sewage outlet 5 are connected through a venturi tube 7. One end of the sewage suction head 12 extends into the venturi tube 7, and a gap is left between the sewage suction head 12 and the venturi tube 7 to form a water outlet channel 8. A sewage suction port 4 is provided at the other end of the sewage suction head 12, the water inlet 6 is connected to the water outlet channel 8, and the water outlet channel 8 is connected to the venturi tube 7; the water pump is used to drive the liquid to flow from the water inlet 6 to the water outlet channel 8. In this embodiment, the switch is located on the outer surface of the shell 1; the sewage suction port 4 is located at the bottom of the shell 1, and the sewage outlet 5 is located at the top of the shell 1, and the sewage suction port 4 and the sewage outlet 5 are arranged concentrically; the water inlet 6 is in a grid shape to facilitate blocking the entry of dirt; the water outlet direction of the water outlet channel 8 is toward the sewage outlet 5.

[0034] There are no other components such as impeller 9 in the entire venturi tube 7 channel, so large particles can pass through smoothly, and there is no need to worry about hair in the water being entangled in the impeller 9, thereby ensuring the normal operation of the impeller 9; one end of the suction head 12 extends into the venturi tube 7, which can prevent the water from the water outlet channel 8 from flowing back into the suction head 12; a water pump, power supply and switch are installed on the shell 1, and the weight is mainly concentrated on the shell 1. When the shell 1 is in water, it will be affected by buoyancy, which reduces the burden on the user when holding it in use.

[0035] In order to facilitate the collection of pollutants, a net bag 10 is provided outside the shell 1, and the net bag 10 is connected to the sewage outlet 5; the net bag 10 is sleeved on the shell 1, and the opening end of the net bag 10 is lower than the water inlet 6, and the opening end of the net bag 10 is connected to the outer surface of the shell 1; the net bag 10 includes a fastening ring 11, and the fastening ring 11 is located between the sewage outlet 5 and the water inlet 6, and the fastening ring 11 is in contact with the outer surface of the shell 1. The design of the net bag 10 facilitates the centralized collection of waste discharged from the sewage outlet 5; the opening end of the net bag 10 is lower than the water inlet 6, so that the water flowing into the water inlet 6 will first pass through the net bag 10, blocking the waste through the net bag 10, playing a filtering role, thereby reducing the waste entering the water inlet 6 and preventing waste from entering and causing blockage; the design of the fastening ring 11 can prevent the waste collected at the bottom of the net bag 10 from leaking to the opening end of the net bag 10, thereby ensuring that the opening end of the net bag 10 is clean and preventing waste from entering the water inlet 6. At the same time, the fastening ring 11 also plays a connecting role and can prevent the net bag 10 from accidentally falling out.

[0036] For the convenience of cleaning, the sewage suction head 12 is detachably connected to the housing 1. During use, the sewage suction head 12 contacts the dirt at the bottom of the swimming pool a lot, and the dirt is easily accumulated. The detachable design of the sewage suction head 12 facilitates the removal of the sewage suction head 12 for cleaning. At the same time, dirt is also easily accumulated between the sewage suction head 12 and the venturi tube 7, resulting in blockage of the water outlet channel 8. The detachable sewage suction head 12 is also convenient for cleaning.

[0037] For the reliable suction head 12, as Figure 6 As shown, the suction head 12 is annular, and the cross-sectional area of ​​the suction head 12 gradually decreases from bottom to top. The cross-sectional area at the bottom is large and covers a large area, which is convenient for sucking the dirt at the bottom of the swimming pool. The cross-sectional area at the top is small, which can increase the flow rate and facilitate driving the dirt to the sewage outlet 5; part of the suction head 12 is passed through the venturi tube 7, and the water outlet channel 8 is annular, so that the water flow can move upward around the wall of the venturi tube 7, and the suction force on the bottom is more balanced; support ribs 13 are provided on the outer surface of the suction head 12, and the support ribs 13 are in contact with the inner surface of the venturi tube 7. When the cleaner is working, the operation of the motor 2, the rotation of the impeller 9 and the movement of the water flow will cause vibration inside. The support ribs 13 can support the venturi tube 7, ensure the stability of the water outlet channel 8, and prevent the change of the water outlet channel 8 caused by shaking. At the same time, the support ribs 13 can strengthen the structural strength of the suction head 12.

[0038] like Figure 3 As shown, in this embodiment, a positioning plate 29 extending outward is provided on the suction head 12, and a positioning groove 30 is provided on the bottom surface of the shell 1. The positioning plate 29 cooperates with the positioning groove 30, and the installation and positioning of the suction head 12 is simple and reliable. The positioning plate 29 is bolted to the shell 1.

[0039] In order to ensure the reliability of the venturi tube 7, Figure 4 As shown, the venturi tube 7 includes a lower section 14 and an upper section 15, the bottom end of the lower section 14 is connected to the sewage suction port 4, the top end of the upper section 15 is connected to the sewage outlet 5, and the top end of the lower section 14 is connected to the bottom end of the upper section 15; the cross-sectional area of ​​the lower section 14 gradually decreases from bottom to top, the cross-sectional area at the bottom of the lower section 14 is large, and the covered area is large, which is convenient for sucking the dirt at the bottom of the swimming pool, and is also conducive to the cooperation with the sewage suction head 12, so that the area of ​​the formed water outlet channel 8 is large, and the water intake is large, which ensures the driving effect of the incoming water flow on the dirt, the cross-sectional area of ​​the upper part of the lower section 14 is small, which can increase the flow rate, and is convenient for driving the dirt to the sewage outlet 5, and the cross-sectional area of ​​the upper section 15 gradually increases from bottom to top, and the cross-sectional area of ​​the upper section 15 gradually increases, which is convenient for the dirt to diffuse outward from the sewage outlet 5 and discharge, reduce the concentration of dirt, and prevent the dirt from clogging the sewage outlet 5.

[0040] In this embodiment, the Venturi tube 7 is a straight tube, and the water flow does not need to turn, which reduces the impact of the water flow in the Venturi tube 7 and reduces the power waste of the water flow; of course, the Venturi tube 7 can also be a curved tube, so that the sewage outlet 5 is located on the side of the shell 1.

[0041] In order to ensure reliable power supply, the power supply includes a built-in battery pack 16, which is located directly below the motor 2. A charging connector 17 is provided on the housing 1, and the charging connector 17 is electrically connected to the built-in battery pack 16; the switch adopts a sealed push switch or a remote control switch or a Hall sensor 18 and an induction magnet 19 that cooperate with each other. In this embodiment, the switch adopts a Hall sensor 18 and an induction magnet 19 that cooperate with each other. The Hall sensor 18 is located in the first cavity 3 and is electrically connected to the motor 2. The induction magnet 19 is located outside the housing 1 and is slidably connected to the housing 1. The Hall sensor 18 is located in the installation cavity 20. Swimming pools are generally set up outdoors and powered by power cords, which requires finding a power socket. The required power cord is long, which is inconvenient to use and store. The design of the built-in battery pack 16 facilitates the mobile use of the pool cleaner, and there is no need to worry about power supply issues. It is quick and convenient to use. The built-in battery pack 16 is also concentrated in the shell 1, so that the overall weight is concentrated on the shell 1, and the shell 1 is submerged in water when in use and is affected by buoyancy, making it easier for users to move the pool cleaner; the charging connector 17 is used to charge the built-in battery pack 16 with an external power supply. The charging connector 17 uses a waterproof interface. The waterproof interface is a prior art and will not be described in detail in this article; the Hall sensor 18 and the induction magnet 19 cooperate, so that the switch does not need to be set up with a hole in the shell 1, reducing the risk of water leakage.

[0042] To ensure the reliability of the water pump, the water pump includes a motor 2 and an impeller 9 installed at the output end of the motor 2 . The impeller 9 is used to drive the fluid to flow from the water inlet 6 to the water outlet channel 8 .

[0043] For the reliability of the first cavity 3, the first cavity 3 includes an installation cavity 20 and a working cavity 21 separated from each other by a first partition 31. The installation cavity 20 is used to install the motor 2, power supply and switch, and the working cavity 21 is used to contain fluid. The impeller 9 is located in the working cavity 21. The cavity wall of the installation cavity 20 is connected to the outer surface of the shell 1, so that the charging connector 17 can directly enter the installation cavity 20 through the shell 1, reducing the risk of water leakage. The partition design of the installation cavity 20 can reduce the probability of water entering the installation cavity 20, ensuring the safety of the motor 2 and the built-in battery pack 16 in the installation cavity 20.

[0044] In order to ensure the reliability of the working chamber 21, Figure 5 , Figure 7As shown, the working chamber 21 includes a water inlet chamber 22 and a water outlet chamber 23 separated from each other by a second partition plate 32. The water inlet chamber 22 is located above the installation chamber 20. The water inlet chamber 22 and the water outlet chamber 23 are connected by a through hole 24. The water inlet 6 is connected to the water inlet chamber 22, and the water outlet channel 8 is connected to the water outlet chamber 23. The through hole 24 is located above the water outlet chamber 23, and the water outlet channel 8 is located below the water outlet chamber 23. The water inlet chamber 22 is designed to be separated, so that the water flow entering through the water inlet 6 is first concentrated in the water inlet chamber 22, which is convenient for the impeller 9 to push the liquid. At the same time, the water inlet chamber 22 is located at the top, and the water body above is cleaner than the water body below, which can reduce the probability of dirt entering from the water inlet 6 and prevent the water inlet 6 from being blocked; the water outlet chamber 23 is filled with water from the through hole 24 at the top, and then discharged from the water outlet channel 8 at the bottom. The liquid will first move from top to bottom, and then flow out from the water outlet channel 8. The overall pressure is uniform, so that the water spray of the water outlet channel 8 is uniform.

[0045] In this embodiment, the water inlet cavity 22 is located directly above the installation cavity 20, and the venturi tube 7 is located at one side of the installation cavity 20, with a compact structure and a small overall volume.

[0046] In order to ensure the reliability of the water inlet chamber 22, a volute 25 is provided in the water inlet chamber 22. The cross section of the volute 25 is in the shape of a volute. The outlet of the volute 25 is connected to the through hole 24, and the inlet of the volute 25 is connected to the water inlet 6. The impeller 9 is located at the inlet of the volute 25. The volute 25 is located at the top of the water inlet chamber 22. The volute 25 cooperates with the impeller 9 to ensure the reliable promotion of the water flow and the water inlet effect. The liquid enters from the water inlet 6 and first reaches the lower part of the water inlet chamber 22. The dirt will sink to the bottom of the water inlet chamber 22 under the action of gravity to reduce the entry of dirt. The liquid in the upper part of the water inlet chamber 22 will enter the volute 25 under the action of the impeller 9, and enter the water outlet chamber 23 after being pressurized by the volute 25.

[0047] In order to facilitate movement, a retractable handle 26 is also included. The handle 26 is rotatably connected to the shell 1. The handle 26 allows the user to move the cleaner in the swimming pool to the side of the swimming pool. The retractable handle is convenient for storage and expansion of the movable range. Rollers 27 are provided at the bottom of the shell 1 for easy movement at the bottom of the swimming pool. A brush 28 is provided at the bottom of the shell 1 for cleaning attachments on the bottom of the pool.

[0048] In this embodiment, the lower part of the shell 1 is triangular, and the upper part of the shell 1 is cylindrical. The cross-sectional area of ​​the lower part of the shell 1 is larger than the cross-sectional area of ​​the upper part of the shell 1. The lower part of the shell 1 has a large cross-sectional area, and the bottom is more stable, which can prevent tipping in the swimming pool. The cylindrical design of the upper part of the shell 1 can reduce the resistance encountered when moving in the swimming pool.

[0049] When in use, the motor 2 drives the impeller 9 to rotate, and the impeller 9 pushes the liquid in the volute part 25 into the water outlet chamber 23. The negative pressure formed in the volute part 25 will draw liquid from the water inlet chamber 22 for replenishment, and the water inlet chamber 22 will draw liquid from the outside through the water inlet 6 for replenishment. The liquid entering the water outlet chamber 23 flows from top to bottom, and the mixed dirt therein will fall to the bottom under the action of gravity. The water outlet channel 8 is higher than the bottom of the suction head 12, which can reduce the dirt passing through the water outlet channel 8. The liquid passing through the water outlet channel 8 moves upward along the Venturi tube 7, driving the liquid in the Venturi tube 7 to move from the suction port 4 to the discharge port 5, so that the suction port 4 can continuously draw the surrounding dirt into it.

[0050] Embodiment 2:

[0051] This embodiment provides a swimming pool cleaner, such as Figure 2 , Figure 3 , Figure 4 As shown, it includes a shell 1, on which is provided a water inlet 6 and a sewage suction port 4 separated from each other, and on which is also provided a sewage outlet 5, the sewage suction port 4 and the sewage outlet 5 are connected, and a water outlet channel 8 is provided between the sewage suction port 4 and the sewage outlet 5, the water outlet direction of the water outlet channel 8 is toward the sewage outlet 5, and the water outlet channel 8 is connected to the water inlet 6.

[0052] The design of separating the water inlet 6 and the sewage suction port 4 from each other has little impact on water inlet and sewage suction. Compared with the design of using the same water inlet 6 and the sewage suction port 4, which are easily blocked when there is a lot of dirt, affecting water inlet, after the water inlet 6 is separated, the dirt will not block the water inlet 6, ensuring the water inlet effect. At the same time, the area can be reduced to increase the flow rate, or the water inlet 6 can adopt a grille shape to reduce the amount of dirt entering the interior, thereby ensuring the stable operation of internal components such as the water pump. The sewage suction port 4 can still adopt a large opening design without affecting the sewage suction effect.

[0053] In order to facilitate the collection of pollutants, a net bag 10 is provided outside the shell 1, and the net bag 10 is connected to the sewage outlet 5; the net bag 10 is sleeved on the shell 1, and the opening end of the net bag 10 is lower than the water inlet 6, and the opening end of the net bag 10 is connected to the outer surface of the shell 1; the net bag 10 includes a fastening ring 11, and the fastening ring 11 is located between the sewage outlet 5 and the water inlet 6, and the fastening ring 11 is in contact with the outer surface of the shell 1. The design of the net bag 10 facilitates the centralized collection of waste discharged from the sewage outlet 5; the opening end of the net bag 10 is lower than the water inlet 6, so that the water flowing into the water inlet 6 will first pass through the net bag 10, blocking the waste through the net bag 10, playing a filtering role, thereby reducing the waste entering the water inlet 6 and preventing waste from entering and causing blockage; the design of the fastening ring 11 can prevent the waste collected at the bottom of the net bag 10 from leaking to the opening end of the net bag 10, thereby ensuring that the opening end of the net bag 10 is clean and preventing waste from entering the water inlet 6. At the same time, the fastening ring 11 also plays a connecting role and can prevent the net bag 10 from accidentally falling out.

[0054] It also includes a water pump, a power supply and a switch for controlling the start and stop of the water pump. A first cavity 3 is provided in the housing 1, the water pump is located in the first cavity 3, and the power supply is electrically connected to the water pump; a sewage suction head 12 is provided at the lower part of the housing 1, the sewage suction head 12 and the sewage outlet 5 are connected through a venturi tube 7, one end of the sewage suction head 12 extends into the venturi tube 7, a gap is left between the sewage suction head 12 and the venturi tube 7 to form a water outlet channel 8, the sewage suction port 4 is located at the other end of the sewage suction head 12, and the water outlet channel 8 is connected to the venturi tube 7; the water pump is used to drive the liquid to flow from the water inlet 6 to the water outlet channel 8. In this embodiment, the switch is located on the outer surface of the housing 1; the sewage suction port 4 is located at the bottom of the housing 1, the sewage outlet 5 is located at the top of the housing 1, and the sewage suction port 4 and the sewage outlet 5 are arranged concentrically; the water inlet 6 is in a grid shape, which is convenient for blocking the entry of dirt.

[0055] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A swimming pool cleaner, characterized in that: The utility model comprises a housing (1), a water pump, a power supply and a switch for controlling the start and stop of the water pump. The water pump is arranged on the housing (1), and the power supply is electrically connected to the water pump. A sewage suction head (12) is arranged at the lower part of the housing (1), and a sewage outlet (5) and a water inlet (6) are arranged on the housing (1). The sewage suction head (12) and the sewage outlet (5) are connected through a venturi tube (7). One end of the sewage suction head (12) extends into the venturi tube (7), and a water outlet channel (8) is arranged between the sewage suction head (12) and the venturi tube (7). The other end of the sewage suction head (12) is provided with a sewage suction port (4), and the water inlet (6) is connected to the water outlet channel (8), and the water outlet channel (8) is connected to the venturi tube (7). The water pump is used to drive liquid to flow from the water inlet (6) to the water outlet channel (8).

2. A swimming pool cleaner according to claim 1, characterized in that: A net bag (10) is provided outside the shell (1), and the net bag (10) is connected to the sewage outlet (5); the net bag (10) is sleeved on the shell (1), the opening end of the net bag (10) is lower than the water inlet (6), and the opening end of the net bag (10) is connected to the outer surface of the shell (1); the net bag (10) includes a fastening ring (11), the fastening ring (11) is located between the sewage outlet (5) and the water inlet (6), and the fastening ring (11) is in contact with the outer surface of the shell (1).

3. A swimming pool cleaner according to claim 1, characterized in that: The dirt suction head (12) is detachably connected to the housing (1).

4. A swimming pool cleaner according to claim 1, characterized in that: The sewage suction head (12) is annular, and the cross-sectional area of ​​the sewage suction head (12) gradually decreases from bottom to top; a portion of the sewage suction head (12) is inserted into the venturi tube (7), and a gap is left between the sewage suction head (12) and the venturi tube (7) to form a water outlet channel (8); the water outlet channel (8) is annular; support ribs (13) are provided on the outer surface of the sewage suction head (12), and the support ribs (13) are in contact with the inner surface of the venturi tube (7).

5. A swimming pool cleaner according to claim 1, characterized in that: The venturi tube (7) comprises a lower section (14) and an upper section (15); the bottom end of the lower section (14) is connected to the sewage suction port (4), the top end of the upper section (15) is connected to the sewage outlet (5), and the top end of the lower section (14) is connected to the bottom end of the upper section (15); the cross-sectional area of ​​the lower section (14) gradually decreases from bottom to top, and the cross-sectional area of ​​the upper section (15) gradually increases from bottom to top.

6. A swimming pool cleaner according to claim 1, characterized in that: The power source comprises a built-in battery pack (16), a charging connector (17) is provided on the housing (1), and the charging connector (17) is electrically connected to the built-in battery pack (16); the switch adopts a sealed push switch or a remote control switch or a Hall sensor (18) and an induction magnet (19) that cooperate with each other.

7. A swimming pool cleaner according to claim 1, characterized in that: The water pump comprises a motor (2) and an impeller (9) mounted at the output end of the motor (2), the impeller (9) being used to drive the fluid to flow from the water inlet (6) to the water outlet channel (8); a first cavity (3) is provided in the housing (1), the first cavity (3) comprising a mounting cavity (20) and a working cavity (21) which are separated from each other; the mounting cavity (20) is used to mount the motor (2), a power source and a switch, the working cavity (21) is used to contain the fluid, and the impeller (9) is located in the working cavity (21); the cavity wall of the mounting cavity (20) is connected to the outer surface of the housing (1).

8. A swimming pool cleaner according to claim 7, characterized in that: The working chamber (21) comprises a water inlet chamber (22) and a water outlet chamber (23) which are separated from each other. The water inlet chamber (22) is located above the installation chamber (20). The water inlet chamber (22) and the water outlet chamber (23) are connected via a through hole (24). The water inlet (6) is connected to the water inlet chamber (22), and the water outlet channel (8) is connected to the water outlet chamber (23). The through hole (24) is located above the water outlet chamber (23), and the water outlet channel (8) is located below the water outlet chamber (23).

9. A swimming pool cleaner according to claim 8, characterized in that: A volute (25) is provided in the water inlet chamber (22). The cross section of the volute (25) is in the shape of a volute. The outlet of the volute (25) is connected to the through hole (24). The inlet of the volute (25) is connected to the water inlet (6). The impeller (9) is located at the inlet of the volute (25).

10. A swimming pool cleaner according to claim 1, characterized in that: It also comprises a retractable handle (26), the handle (26) being rotatably connected to the housing (1); a roller (27) is provided at the bottom of the housing (1); and a brush (28) is provided at the bottom of the housing (1).

11. A swimming pool cleaner, characterized in that: The invention comprises a shell (1), wherein the shell (1) is provided with a water inlet (6) and a sewage suction port (4) which are separated from each other, and the shell (1) is also provided with a sewage outlet (5), wherein the sewage suction port (4) and the sewage outlet (5) are connected, and a water outlet channel (8) is provided between the sewage suction port (4) and the sewage outlet (5), wherein the water outlet direction of the water outlet channel (8) is toward the sewage outlet (5), and the water outlet channel (8) is connected with the water inlet (6).

12. A swimming pool cleaner according to claim 11, characterized in that: A net bag (10) is provided outside the shell (1), and the net bag (10) is connected to the sewage outlet (5); the net bag (10) is sleeved on the shell (1), the opening end of the net bag (10) is lower than the water inlet (6), and the opening end of the net bag (10) is connected to the outer surface of the shell (1); the net bag (10) includes a fastening ring (11), the fastening ring (11) is located between the sewage outlet (5) and the water inlet (6), and the fastening ring (11) is in contact with the outer surface of the shell (1).

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