A cleaning water pump for a dishwasher

Abstract

This application discloses a cleaning water pump for a dishwasher, relating to the field of energy-saving household appliance technology. It includes: a mounting plate, a water storage tank, a motor, a pump body, a magnetic drive component, a filter cartridge, and a rotary wheel assembly. The water storage tank is located below the mounting plate, with its upper end connected to a mounting port on the upper end of the mounting plate. The motor is located below the mounting plate, with a first output shaft and a second output shaft symmetrically connected to its two ends. The pump body is connected to the first output shaft, and its inlet is connected to a drain pipe at the lower end of the water storage tank. The magnetic drive component is rotatably mounted on the outside of the water storage tank and is drively connected to the second output shaft. A filter screen is provided on the side wall of the filter cartridge, which can be installed into the water storage tank through the mounting port. The rotary wheel assembly is rotatably mounted on the outer periphery of the filter cartridge and can be driven by the magnetic drive component to rotate around the filter cartridge. This application can automatically clean the filter screen, prevent clogging, improve the pump's conveying efficiency, and reduce the pump's energy consumption.

Description

Technical Field

[0001] This application relates to the field of energy-saving household appliance technology, and in particular to a cleaning water pump for a dishwasher. Background Technology

[0002] Traditional dishwasher water pump systems typically use a simple centrifugal pump to draw water directly from the bottom of the collection tank and pump it to the spray arms. Solid impurities such as rice grains and vegetable scraps in the washing water are mainly intercepted by a single filter installed before the pump inlet. This traditional method has several significant drawbacks: First, the filter is easily clogged after intercepting impurities, especially fine starch and grease particles, which adhere to the mesh, causing a sharp increase in water flow resistance, reduced pump efficiency, and increased pump energy consumption. It can even be damaged due to overload. Second, clogged filters require frequent manual removal and cleaning by the user, a tedious and unhygienic process. Third, to prevent impurities from entering the pump body, sometimes a finer filter is used, but this actually accelerates the clogging process, resulting in increased pump energy consumption. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a cleaning water pump for a dishwasher that can automatically clean the filter screen, prevent clogging, improve the pump's delivery efficiency, and reduce the pump's energy consumption.

[0004] A cleaning water pump for a dishwasher according to a first aspect of this application includes: a mounting plate, a water storage tank, a motor, a pump body, a magnetic drive component, a filter cartridge, and a rotary wheel assembly. The water storage tank is located below the mounting plate, and its upper end communicates with a mounting port at the upper end of the mounting plate. The motor is located below the mounting plate, and its two ends are symmetrically connected to a first output shaft and a second output shaft. The pump body is connected to the first output shaft, and its inlet is connected to a drain pipe at the lower end of the water storage tank. The magnetic drive component is rotatably mounted on the outside of the water storage tank and is drively connected to the second output shaft. A filter screen is provided on the side wall of the filter cartridge, and the filter cartridge can be installed into the water storage tank through the mounting port. The rotary wheel assembly is rotatably mounted on the outer periphery of the filter cartridge, and the rotary wheel assembly can be driven by the magnetic drive component and rotate around the filter cartridge.

[0005] A cleaning water pump for a dishwasher according to an embodiment of this application has at least the following beneficial effects: An electric motor drives a magnetic transmission component to rotate via a second output shaft. The magnetic field passes through a non-ferromagnetic water storage tank, driving the internal rotating wheel assembly to rotate synchronously. The first output shaft drives the pump body to extract cleaning water from the water storage tank through the drain pipe. The electric motor simultaneously drives both the first and second output shafts, fully utilizing the electric motor's power. This eliminates the need for a separate drive motor for the rotating wheel assembly, making the entire pump device more compact and saving installation space at the bottom of the dishwasher. The rotation of the rotating wheel assembly causes water to continuously flush and impact the outside of the filter screen, effectively removing impurities attached to the filter screen, preventing the filter screen pores from becoming clogged, and ensuring long-lasting filtration and smooth water flow.

[0006] According to some embodiments of this application, the impeller assembly includes a top ring, a plurality of blades, and a bottom ring. The plurality of blades are spaced apart between the top ring and the bottom ring. The top ring is rotatably mounted on the filter cylinder. The bottom ring and the top ring are parallel to each other, and the bottom ring is located below the top ring.

[0007] According to some embodiments of this application, the filter screen is made of a flexible material. When the rotating wheel assembly rotates, the blades can drive the water flow to reciprocate and impact the filter screen, so that the filter screen vibrates.

[0008] According to some embodiments of this application, the bottom ring is provided with a plurality of passive magnets, and the magnetic transmission component is provided with a plurality of active magnets. The passive magnets and the active magnets are at the same height. When the magnetic transmission component rotates, the bottom ring is driven to rotate by the magnetic force between the passive magnets and the active magnets.

[0009] According to some embodiments of this application, the lower end of the water storage cylinder is connected to a first drain pipe, and the lower end of the filter cylinder is provided with a second drain pipe, which can be inserted into the first drain pipe.

[0010] According to some embodiments of this application, a sealing ring is provided on the outside of the second sewage pipe, the sealing ring being used to seal the gap between the second sewage pipe and the first sewage pipe.

[0011] According to some embodiments of this application, the first drain pipe is connected to a drain valve.

[0012] According to some embodiments of this application, the upper end of the magnetic transmission component is provided with a gear ring, and the second output shaft is provided with a gear that meshes with the gear ring, wherein the rotation axis of the gear ring is perpendicular to the rotation axis of the gear.

[0013] According to some embodiments of this application, the water storage tank has a water inlet pipe connected to its side wall.

[0014] According to some embodiments of this application, the electric motor is connected to the mounting plate via a mounting bracket.

[0015] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0016] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the overall installation structure according to one embodiment of this application; Figure 2 This is a schematic diagram of the installation of a filter cartridge according to one embodiment of this application; Figure 3 This is a schematic diagram of a mounting plate and a water storage tank according to one embodiment of this application; Figure 4 This is a schematic diagram of a magnetic transmission component according to an embodiment of this application; Figure 5 This is an exploded view of a filter cylinder and impeller assembly according to an embodiment of this application; Figure 6 This is a cross-sectional schematic diagram of a filter cylinder and impeller assembly according to an embodiment of this application; Figure 7 for Figure 6 Enlarged view of point A in the middle; Figure 8 This is a schematic diagram of a rotary wheel assembly according to an embodiment of this application.

[0017] Icon labels: Mounting plate 100, mounting port 110; Water storage tank 200, drain pipe 201, first sewage pipe 210, sewage valve 211, fourth boss 212; Electric motor 300, first output shaft 310, second output shaft 320, gear 321; Pump body 400; Magnetic drive component 500, active magnet 510, gear ring 520; Filter cartridge 600, filter screen 610, second drain pipe 620, second boss 630, baffle 640, third boss 650; Rotor assembly 700, top ring 710, blade 720, bottom ring 730, passive magnet 731, mounting bearing 740, first boss 750, and buckle 760; Water inlet pipe 800; Mounting bracket 900. Detailed Implementation

[0018] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0019] In the description of this application, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and 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 therefore should not be construed as a limitation of this application.

[0020] In the description of this application, "multiple" refers to two or more. The use of "first" and "second" is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or the order in which the technical features are indicated.

[0021] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0022] Reference Figures 1 to 8As shown, one embodiment of this application discloses a cleaning water pump for a dishwasher, comprising: a mounting plate 100, a water storage tank 200, a motor 300, a pump body 400, a magnetic drive component 500, a filter cartridge 600, and a rotor assembly 700. The mounting plate 100 is located below the internal space of the dishwasher and is used to collect the falling cleaning water, which may contain solid impurities such as rice grains and vegetable scraps. The mounting plate 100 is inclined toward the mounting port 110. The water storage tank 200 is located below the mounting plate 100, and the upper end of the water storage tank 200 is connected to the mounting port 110 at the upper end of the mounting plate 100. The cleaning water above the mounting plate 100 flows into the water storage tank 200 from the mounting port 110 under the action of gravity. The water storage tank 200 is used to temporarily store the cleaning water. The motor 300 is located below the mounting plate 100. The two ends of the motor 300 are symmetrically connected to the first output shaft 310 and the second output shaft 320. The motor 300 outputs power through the first output shaft 310 and the second output shaft 320. The pump body 400 is a centrifugal pump. The pump body 400 is connected to the first output shaft 310, and the inlet of the pump body 400 is connected to the drain pipe 201 at the lower end of the water storage tank 200. The first output shaft 310 drives the pump body 400 to operate, drawing cleaning water from the water storage tank 200 through the drain pipe 201. The outlet of the pump body 400 is connected to the dishwasher's spray system, which sprays cleaning water to wash the dishes and utensils. The washed water falls onto the mounting plate 100 for collection. The dishwasher's spray system is existing technology and will not be described in detail. The magnetic drive component 500 is rotatably mounted on the outside of the water storage cylinder 200. The water storage cylinder 200 is made of non-ferromagnetic materials such as plastic or aluminum alloy to facilitate the passage of the magnetic field through the water storage cylinder 200. The magnetic drive component 500 is connected to the second output shaft 320. The second output shaft 320 is used to drive the magnetic drive component 500 to rotate around the water storage cylinder 200. The rotation axis of the magnetic drive component 500 is set vertically. The filter cylinder 600 has a filter screen 610 on its side wall. The filter screen 610 is used to intercept solid impurities in the cleaning water. The outer diameter of the filter cylinder 600 is smaller than the inner diameter of the water storage cylinder 200. The filter cylinder 600 can be installed into the water storage cylinder 200 through the installation port 110. Before entering the storage cylinder, the cleaning water passes through the filter screen 610 on the side wall of the filter cylinder 600 to remove solid impurities such as rice grains and vegetable leaves, preventing solid impurities from entering the pump body 400 and the spray system. The impeller assembly 700 is rotatably mounted on the outer periphery of the filter cartridge 600, located in the gap between the filter cartridge 600 and the water storage tank 200. The impeller assembly 700 is driven by the magnetic drive component 500 and rotates around the filter cartridge 600. During its rotation, the impeller assembly 700 drives water flow to impact the outside of the filter screen 610, preventing solid impurities from clogging it. The motor 300 simultaneously drives the first output shaft 310 and the second output shaft 320, fully utilizing the power of the motor 300. This eliminates the need for a separate drive motor for the impeller assembly 700, resulting in a more compact water pump device structure and saving installation space at the bottom of the dishwasher.The electric motor 300 drives the external magnetic transmission component 500 to rotate via the second output shaft 320. The magnetic field drives the internal rotating wheel assembly 700 to rotate synchronously through the non-ferromagnetic water storage tank 200. The rotation of the rotating wheel assembly 700 causes the water flow to continuously flush and impact the outside of the filter screen 610, which can effectively remove impurities attached to the filter screen 610, prevent the filter screen 610 pores from being blocked, and ensure long-lasting filtration effect and smooth water flow.

[0023] Reference Figures 5 to 8 As shown, in some embodiments, the impeller assembly 700 includes a top ring 710, a plurality of blades 720, and a bottom ring 730. The plurality of blades 720 are spaced apart between the top ring 710 and the bottom ring 730, and the blades 720 are vertically arranged. The top ring 710 is rotatably mounted on the filter cartridge 600, and the bottom ring 730 is parallel to the top ring 710, with the bottom ring 730 located below the top ring 710. The plurality of blades 720 are symmetrically arranged about the rotation axis of the impeller assembly 700, and the top ring 710 and the bottom ring 730 are connected by the plurality of blades 720, which enhances the overall structural strength and rigidity of the impeller assembly 700. A mounting bearing 740 is snapped onto the inner side of the top ring 710. The mounting bearing 740 is a deep groove ball bearing or an angular contact ball bearing. A first boss 750 and a snap fastener 760 are provided on the inner side of the top ring 710. The first boss 750 and the snap fastener 760 cooperate to fix the outer ring of the mounting bearing 740. A second boss 630 is provided on the outer side of the filter cartridge 600. A baffle 640 is threadedly connected to the top of the filter cartridge 600. The baffle 640 abuts against the mounting plate 100 to axially position the filter cartridge 600. A third boss 650 is provided on the baffle 640. The second boss 630 and the third boss 650 cooperate to fix the inner ring of the mounting bearing 740.

[0024] Reference Figure 4 and Figure 5 As shown, in some embodiments, the filter screen 610 is made of flexible materials such as polyethylene or nylon. When the rotating wheel assembly 700 rotates, the blades 720 located between the outer wall of the filter screen 610 and the inner wall of the water storage cylinder 200 move, thereby driving the water flow to reciprocate and impact the filter screen 610, causing the filter screen 610 to vibrate. The vibration of the filter screen 610 makes it easier to loosen the mixture of starch, grease, and fine particles attached to the filter screen 610, achieving a good anti-clogging effect and helping to maintain a relatively stable water flow through the filter screen 610.

[0025] Reference Figure 8As shown, in some embodiments, a plurality of passive magnets 731 are provided on the bottom ring 730, and a plurality of active magnets 510 are provided on the magnetic drive component 500. Both the passive magnets 731 and the active magnets 510 are neodymium iron boron magnets. The passive magnets 731 and the active magnets 510 are at the same height, and their magnetic poles are opposite on the sides of the passive magnets 731 and the active magnets 510 that are close to each other. When the magnetic drive component 500 rotates, the bottom ring 730 is driven to rotate by the magnetic force between the passive magnets 731 and the active magnets 510. The centers of the magnetic poles of the passive magnets 731 and the active magnets 510 are aligned in the magnetic axis direction, increasing the effective magnetic coupling area and ensuring stable and reliable rotational speed and power output of the wheel assembly 700.

[0026] Reference Figure 1 and Figure 2 As shown, in some embodiments, the lower end of the water storage cylinder 200 is connected to a first drain pipe 210, and the lower end of the filter cylinder 600 is provided with a second drain pipe 620, which can be inserted into the first drain pipe 210. Solid impurities intercepted in the filter cylinder 600 can be discharged under gravity through the second drain pipe 620 and the first drain pipe 210. This simplifies the daily cleaning process and eliminates the need for frequent disassembly and reassembly. The insertion of the second drain pipe 620 into the first drain pipe 210 ensures that all sewage and impurities discharged from the filter cylinder 600 are guided into the first drain pipe 210, while the inserted filter cylinder 600 can be easily removed for deep cleaning.

[0027] Reference Figure 2 As shown, in some embodiments, a sealing ring is provided on the outside of the second drain pipe 620. The sealing ring is made of rubber or silicone and is used to seal the gap between the second drain pipe 620 and the first drain pipe 210. The sealing ring creates a continuous, sealed channel between the first drain pipe 210 and the second drain pipe 620, preventing sewage containing residue from leaking or seeping out from the interface during the sewage discharge process.

[0028] Reference Figure 1 and Figure 2 As shown, in some embodiments, the first drain pipe 210 is connected to a drain valve 211. The first drain pipe 210 is connected to the dishwasher's drain pump, which is existing technology and will not be described in detail. The drain valve 211 is located between the first drain pipe 210 and the dishwasher's drain pump. After the washing cycle is completed, the drain valve 211 is opened manually or automatically to drain all accumulated residue. This simplifies the daily cleaning process and eliminates the need for frequent disassembly and reassembly. After each wash, the drain valve 211 drains waste and residue, and the filter cartridge is periodically removed for a 600-degree deep cleaning to maintain the system's good filtration capacity and improve ease of use.

[0029] Reference Figures 1 to 5As shown, in some embodiments, the upper end of the magnetic drive component 500 is provided with a gear ring 520, and the second output shaft 320 is provided with a gear 321 that meshes with the gear ring 520. The rotation axis of the gear ring 520 is perpendicular to the rotation axis of the gear 321. The horizontal rotation output of the motor 300 is converted into the vertical rotation of the magnetic drive component 500 through a pair of mutually perpendicular meshing gears 321 and gear ring 520. This allows the motor 300 to be arranged more flexibly horizontally in the bottom space of the dishwasher, making the overall structure more compact. If it is necessary to disassemble the motor 300 or the pump body 400, it is usually only necessary to disengage the gear pair 321. The side wall of the water storage tank 200 is provided with a fourth boss 212, which is located below the magnetic drive component 500. Multiple stacked Teflon gaskets are provided between the fourth boss 212 and the magnetic drive component 500 to reduce friction. The fourth boss 212 is used to support the magnetic drive component 500.

[0030] Reference Figure 1 and Figure 2 As shown, in some embodiments, a water inlet pipe 800 is connected to the side wall of the water storage tank 200. The water inlet pipe 800 is connected to the dishwasher's water softening system. The dishwasher's water softening system is prior art and will not be described in detail. The water inlet pipe 800 is used to replenish the water storage tank 200 with new cleaning water, and the water inlet pipe 800 injects the cleaning water tangentially along the tank wall.

[0031] Reference Figure 1 and Figure 2 As shown, in some embodiments, the motor 300 is connected to the mounting plate 100 via a mounting bracket 900, which is bolted to the mounting plate 100 and to the motor 300. An elastic damping pad is provided at the connection between the motor 300 and the mounting bracket 900. This pad absorbs and isolates vibrations generated during motor 300 operation, reducing noise and resonance. The mounting bracket 900, as a connector, can be flexibly designed in shape to optimize the positioning and orientation of the motor 300 within a limited space, avoiding pipes or other components.

[0032] Operating Procedures: After the dishwasher's spray system washes the dishes, the rinse water falls onto the inclined mounting plate 100. Before entering the water storage tank 200, the water first passes through a removable filter cartridge 600, where larger solid impurities are trapped. The motor 300 starts, and the first output shaft 310 drives the pump body 400 to extract the filtered water from the water storage tank 200, pressurize it, and deliver it to the dishwasher's spray system, completing the recycling of the rinse water. The second output shaft 320 of the motor 300 drives the magnetic drive component 500 to rotate around the outside of the water storage tank 200 through a set of vertically meshing gears 321 and a gear ring 520. The active magnet 510 on the magnetic drive component 500 generates a rotating magnetic field. The magnetic field penetrates the non-ferromagnetic wall of the water storage tank 200, driving the passive magnet 731 fixed on the bottom ring 730 of the rotor assembly 700, thereby causing the entire rotor assembly 700 to rotate synchronously. When the blades 720 of the impeller assembly 700 rotate, they drive a continuous flow of water to impact the outer side of the flexible filter screen 610 of the filter cartridge 600. This impact not only washes away impurities but also causes the filter screen 610 to vibrate, effectively removing stubborn dirt and preventing clogging, thus ensuring long-lasting filtration. Solid impurities intercepted by the filter cartridge 600 are discharged under gravity through the second drain pipe 620 at the bottom of the filter cartridge 600, controlled by the drain valve 211 at the end. The filter cartridge 600 can be easily removed as a whole from the mounting port 110 for regular deep cleaning.

[0033] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A cleaning water pump for a dishwasher, characterized in that, include: Mounting plate (100); A water storage cylinder (200) is located below the mounting plate (100), and the upper end of the water storage cylinder (200) is connected to the mounting port (110) at the upper end of the mounting plate (100); An electric motor (300) is located below the mounting plate (100), and the two ends of the electric motor (300) are symmetrically connected to a first output shaft (310) and a second output shaft (320). The pump body (400) is connected to the first output shaft (310), and the inlet of the pump body (400) is connected to the drain pipe (201) at the lower end of the water storage tank (200); A magnetic drive component (500) is rotatably mounted on the outside of the water storage cylinder (200), and the magnetic drive component (500) is connected to the second output shaft (320) in a drive connection. A filter cartridge (600) is provided with a filter screen (610) on its side wall, and the filter cartridge (600) can be installed into the water storage tank (200) through the mounting port (110); A rotating wheel assembly (700) is rotatably mounted on the outer periphery of the filter cartridge (600). The rotating wheel assembly (700) can be driven by the magnetic transmission member (500) and rotates around the filter cartridge (600).

2. The cleaning water pump for a dishwasher according to claim 1, characterized in that: The impeller assembly (700) includes a top ring (710), a plurality of blades (720) and a bottom ring (730). The plurality of blades (720) are spaced apart between the top ring (710) and the bottom ring (730). The top ring (710) is rotatably mounted on the filter cylinder (600). The bottom ring (730) and the top ring (710) are parallel to each other, and the bottom ring (730) is located below the top ring (710).

3. The cleaning water pump for a dishwasher according to claim 2, characterized in that: The filter screen (610) is made of flexible material. When the rotating wheel assembly (700) rotates, the blades (720) can drive the water flow to reciprocate and impact the filter screen (610) so that the filter screen (610) vibrates.

4. The cleaning water pump for a dishwasher according to claim 2, characterized in that: The bottom ring (730) is provided with a plurality of passive magnets (731), and the magnetic drive component (500) is provided with a plurality of active magnets (510). The passive magnets (731) and the active magnets (510) are at the same height. When the magnetic drive component (500) rotates, the bottom ring (730) is driven to rotate by the magnetic force between the passive magnets (731) and the active magnets (510).

5. The cleaning water pump for a dishwasher according to claim 1, characterized in that: The lower end of the water storage cylinder (200) is connected to a first drain pipe (210), and the lower end of the filter cylinder (600) is provided with a second drain pipe (620), which can be inserted into the first drain pipe (210).

6. The cleaning water pump for a dishwasher according to claim 5, characterized in that: A sealing ring is provided on the outside of the second drain pipe (620), which is used to seal the gap between the second drain pipe (620) and the first drain pipe (210).

7. The cleaning water pump for a dishwasher according to claim 5, characterized in that: The first drain pipe (210) is connected to a drain valve (211).

8. The cleaning water pump for a dishwasher according to claim 1, characterized in that: The upper end of the magnetic transmission component (500) is provided with a gear ring (520), and the second output shaft (320) is provided with a gear (321) that meshes with the gear ring (520). The rotation axis of the gear ring (520) is perpendicular to the rotation axis of the gear (321).

9. The cleaning water pump for a dishwasher according to claim 1, characterized in that: The water storage cylinder (200) has an inlet pipe (800) connected to its side wall.

10. The cleaning water pump for a dishwasher according to claim 1, characterized in that: The motor (300) is connected to the mounting plate (100) via a mounting bracket (900).

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