Dishwasher and sink thereof

Abstract

This utility model relates to the field of dishwasher technology, specifically providing a dishwasher and its water tank. It aims to solve the problem that when the water level in the existing dishwasher water tank is lower than the inner top surface of the inlet end of the drain pipe, the drain pipe simultaneously draws in water and air, leading to a decrease in water pump head and an increase in water pump operating temperature. To this end, this utility model provides a dishwasher water tank with a water collection tank and a drain pipe. The outlet end of the drain pipe is connected to the dishwasher's water pump, and the inlet end of the drain pipe is connected to the water collection tank. The dishwasher water tank provided by this utility model adopts a structural design with a water-blocking surface directly installed at the inlet end of the drain pipe, effectively preventing air from the tank side from entering the drain pipe from the upper space at the inlet end. This technical solution can significantly reduce the problem of water pump head reduction caused by air intake, and also effectively reduce the abnormal increase in water pump operating temperature caused by this.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, specifically providing a dishwasher and its sink. Background Technology

[0002] With the fast pace of life, dishwashers have become an essential appliance in modern households due to their efficient cleaning capabilities. Existing dishwashers have spray arms and a water tank inside the drum, using a water pump to generate high-pressure water to clean dishes. Specifically, the water pump draws water from the water tank and delivers it to the spray arms, which then spray high-pressure water onto the dishes to clean them. To achieve this process, the water pump and the water tank are connected by a water intake pipe, allowing the pump to draw water from the water tank and deliver it to the spray arms.

[0003] In actual operation, when the water level in the tank is lower than the inner top surface of the inlet of the suction pipe, the suction pipe will simultaneously draw in water and air. This situation will cause two main problems: First, the introduction of air will reduce the working efficiency of the water pump. Because the impeller cannot effectively pressurize the air-liquid mixture, the pump head will decrease. This directly affects the water flow pressure and output of the spray arm, ultimately reducing the cleaning effect. Second, under normal operating conditions, the water flowing through the pump has an important function of cooling the motor and bearings; however, when air is introduced, the volume of water inside the pump decreases, the cooling effect is significantly reduced, and the pump operating temperature rises, thus affecting the pump's service life and reliability.

[0004] Furthermore, a technical issue affecting user experience was discovered during actual use: residue generated during washing gradually accumulates on the filter cup in the sink. Over time, this residue buildup can clog the filter, requiring frequent cleaning and negatively impacting the user experience. Utility Model Content

[0005] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem that when the water level in the sink of an existing dishwasher is lower than the inner top surface of the inlet end of the drain pipe, the drain pipe will simultaneously suck in water and air, which will lead to a decrease in the pump head and an increase in the pump operating temperature.

[0006] In a first aspect, the present invention provides a water tank for a dishwasher, the water tank having a water collection trough and a water suction pipe, the outlet end of the water suction pipe being connected to the water pump of the dishwasher, and the inlet end of the water suction pipe being connected to the water collection trough.

[0007] The inlet end of the pumping pipe extends downward to form a water-blocking surface, thereby reducing the water inlet height.

[0008] In some feasible embodiments of the dishwasher sink described above, the inlet end of the drain pipe is provided with a constriction member, and the water-blocking surface is formed on the constriction member.

[0009] In some feasible embodiments of the dishwasher sink described above, the end face of the constricted member facing the water collection tank is adapted to the inner side of the water collection tank.

[0010] In some feasible embodiments of the dishwasher sink described above, the constriction member further includes an inner top surface, which gradually constricts downward in the opposite direction of water pumping until it connects with the water-blocking surface.

[0011] In some feasible embodiments of the dishwasher sink described above, the constricting member further includes an inner bottom surface that gradually narrows upward in the opposite direction of water extraction, thus forming a water extraction channel with the inner top surface.

[0012] In some feasible embodiments of the dishwasher sink described above, the inlet of the constricted member is formed as a flat opening structure.

[0013] In some feasible embodiments of the dishwasher sink described above, the constricted section is integrally formed with the drain pipe.

[0014] In some feasible embodiments of the dishwasher's sink described above, the inner side of the sink is tangent to the axis of the drain pipe.

[0015] The dishwasher sink provided by this utility model adopts a structural design with a water-blocking surface directly installed at the inlet end of the water suction pipe. This water-blocking surface effectively reduces the height of the water suction pipe opening, thereby effectively preventing air from the sink side from entering the water suction pipe from the upper space at the inlet end. This structural design reduces the actual water inlet height at the water suction pipe inlet, ensuring that the water level in the sink does not prematurely fall below the maximum height of the pipe opening, thus delaying the time it takes for the water pump to draw in air. This technical solution significantly reduces the problem of water pump head reduction caused by air intake, and also effectively reduces the abnormal increase in water pump operating temperature caused by this, ensuring stable operation and extending the service life of the equipment.

[0016] In a second aspect, the present invention also provides a dishwasher, the dishwasher including the water tank of the dishwasher described in any of the above technical solutions.

[0017] Since the dishwasher described above is equipped with the aforementioned dishwasher sink, it possesses all the technical effects that the aforementioned dishwasher sink can achieve, which will not be repeated here. Attached Figure Description

[0018] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0019] Figure 1 This is a structural schematic diagram of the water tank, connecting pipe, water pump, and filter cup of this utility model;

[0020] Figure 2 This is an exploded view of the water tank and the constricted opening component of this utility model;

[0021] Figure 3 This is a top view of the water tank of this utility model, in which some structures of the water tank are omitted;

[0022] Figure 4 yes Figure 3 A cross-sectional view along the AA direction;

[0023] Figure 5 yes Figure 3 Cross-sectional view along the BB direction;

[0024] Figure 6 This is a side view of the water tank of this utility model, wherein some structures of the water tank are omitted;

[0025] Figure 7 yes Figure 6 A cross-sectional view along the CC direction.

[0026] List of reference numerals in the attached diagram:

[0027] 1-Water tank; 11-Water collection tank; 111-Inner side; 12-Water pumping pipe; 121-Inlet end; 122-Outlet end; 13-Constriction component; 131-Water-blocking surface; 132-Inner top surface; 133-Inner bottom surface; 14-Water pumping channel; 2-Connecting pipe; 3-Water pump; 4-Filter cup. Detailed Implementation

[0028] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0029] It should be noted that in the description of this utility model, terms such as "upper", "lower", "inner", and "outer" that indicate direction or positional relationship are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0030] Furthermore, it should be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal connection of two components, and so on. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. In addition, numerical terms such as "first," "second," etc., used herein are primarily (only) used to distinguish multiple similar objects, quantities, or processes; that is, they do not necessarily indicate any dependency and / or order between these objects, quantities, or processes. If a dependency and / or order is required, it will be explicitly stated in the context, or it will be obvious to those skilled in the art when understanding the specific embodiments.

[0031] like Figure 1 As shown, this embodiment of the present invention provides a dishwasher, which includes an inner tub (not shown), a water tank 1, a connecting pipe 2, a water pump 3, and a spray assembly (not shown). The inner tub forms a receiving cavity as a storage space for tableware such as bowls and chopsticks. The water tank 1 is installed at the bottom of the inner tub and is the starting point of the water circulation system. It is connected to the spray assembly, water pump 3, and other devices to form a circulating water path. It can store clean water or water containing detergent required during the washing process. The water is drawn by the water pump 3 and delivered to each spray arm of the spray assembly to achieve high-pressure spray cleaning.

[0032] The sink 1 has a water collection tank 11 for accommodating water flowing into the dishwasher's inner tub. A water suction pipe 12 is located on the side of the water collection tank 11. The inlet end 121 of the water suction pipe 12 connects to the water collection tank 11, and the outlet end 122 of the water suction pipe 12 connects to a water pump 3 via a connecting pipe 2. Driven by the water pump 3, the water in the sink 1 is transported to the spray arm in the inner tub, causing the spray arm to spray high-pressure water to clean the dishes in the inner tub. The cleaned water then flows back into the sink 1, completing one cycle. This dishwasher design, through this water circulation system, significantly reduces water consumption during the washing stage, avoids substantial water waste, achieves excellent water conservation, and improves water resource utilization efficiency.

[0033] In existing dishwashers, when the water level in the tank is lower than the inner top surface of the inlet of the drain pipe, the drain pipe will simultaneously draw in both water and air. This situation presents two main problems: First, the introduction of air reduces the efficiency of the water pump. Because the impeller cannot effectively pressurize the air-liquid mixture, the pump head decreases. This directly affects the water flow pressure and output of the spray arms, ultimately reducing the cleaning effect. Second, under normal operating conditions, the water flowing through the pump plays a crucial role in cooling the motor and bearings; however, when air is introduced, the volume of water inside the pump decreases, significantly reducing the cooling effect and causing the pump's operating temperature to rise, thus affecting the pump's lifespan and reliability.

[0034] To address the problem in existing dishwashers where the water level in the sink is lower than the inner top surface of the drain pipe inlet, causing both water and air to be drawn in simultaneously, resulting in a decrease in pump head and an increase in pump operating temperature, the inlet end 121 of the drain pipe 12 in this invention extends downwards to form a water-blocking surface 131, thereby reducing the water inlet height of the inlet end 121. Specifically, in this embodiment, as... Figures 2 to 5 As shown, the inlet end 121 of the pumping pipe 12 is provided with a constriction member 13, and the end of the constriction member 13 facing the water collection tank 11 extends downward to form the aforementioned water-blocking surface 131.

[0035] It should be noted that the constriction member 13 can be installed at the inlet end 121 of the pumping pipe 12 by means of snap-fit, bonding, interference fit, etc. The specific installation method can be adjusted according to the actual production application.

[0036] Further reference Figures 2 to 5 The end face of the constricted member 13 facing the water collection trough 11 is adapted to the inner surface 111 of the water collection trough 11. The inner surface 111 of the water collection trough 11 is an arc-shaped surface, and the end face of the constricted member 13 is an arc-shaped surface that matches the inner surface 111 of the water collection trough 11, so that after installation, the end face of the constricted member 13 is flush with the inner surface 111 of the water collection trough 11. Through the above arrangement, the two together form a continuous and smooth integral wall surface, which can reduce the generation of turbulence, significantly reduce the flow resistance when water flows through, and make the flow velocity distribution of water in the water collection trough 11 more uniform, which is conducive to improving the working efficiency of the water pump 3, thereby improving the cleaning effect of the dishwasher. In addition, this design also facilitates the rotational flow of water in the water collection trough 11.

[0037] Furthermore, such as Figure 4As shown, the constriction member 13 also includes an inner top surface 132, which gradually narrows downwards in the opposite direction of water pumping until it connects with the water-blocking surface 131, so that the inner top surface 132 has a gradually narrowing structure. This design reduces turbulence in the upper space of the pumping pipe 12, significantly lowers the flow resistance when water flows through, and makes the flow velocity distribution of the water in the pumping pipe 12 more uniform, which is beneficial to improving the working efficiency of the water pump 3, thereby improving the cleaning effect of the dishwasher.

[0038] Further reference Figure 4 The constriction member 13 also includes an inner bottom surface 133, which gradually narrows upwards in the opposite direction of water pumping, thus forming a water pumping channel 14 with the inner top surface 132. This results in the inner bottom surface 133 having a gradually narrowing structure, forming an overall gradually narrowing channel (in the opposite direction of water pumping). This design reduces turbulence in the lower space of the water pumping pipe 12, significantly reducing flow resistance and making the flow velocity distribution within the water pumping pipe 12 more uniform. This improves the working efficiency of the water pump 3, thereby enhancing the cleaning effect of the dishwasher.

[0039] Furthermore, such as Figure 5 As shown, the inlet of the constricted member 13 is formed into a flattened structure. Specifically, the lateral inner diameter of this flattened structure is approximately the same as the inner diameter of the water inlet pipe 12, while the vertical inner diameter is smaller than that of the water inlet pipe 12. Through this design, on the one hand, the flattened structure effectively reduces the actual water inlet height of the inlet end 121 of the water inlet pipe 12, preventing air intake; on the other hand, the flattened structure maximizes the water flow area while reducing the actual water inlet height of the inlet end 121 of the water inlet pipe 12, thereby significantly increasing the water output of the spray arm and thus improving the cleaning effect of the dishwasher.

[0040] In some specific embodiments, the constriction member 13 and the water pumping pipe 12 are integrally formed. It should be noted that this integrally formed structure of the constriction member 13 and the water pumping pipe 12 can be achieved through a one-time injection molding process during the equipment manufacturing stage, thereby eliminating the need to install the constriction member 13 onto the water pumping pipe 12, simplifying the production process, and reducing manufacturing costs. Furthermore, such a structure ensures the reliability and stability of the equipment during use.

[0041] The dishwasher sink 1 provided by this utility model adopts a structural design in which a water-blocking surface 131 is directly set at the inlet end 121 of the water suction pipe 12. The water-blocking surface 131 effectively reduces the height of the water suction pipe 12 opening, thereby effectively preventing air from entering the water suction pipe 12 from the upper space of the inlet end 121. Through this structural design, the actual water inlet height of the water suction pipe 12 is reduced, ensuring that the water level in the sink 1 does not fall below the maximum height of the pipe opening prematurely when the water level drops, thus delaying the time it takes for the water pump 3 to draw in air. This technical solution can significantly reduce the problem of water pump 3's head reduction caused by air intake, and also effectively reduce the abnormal increase in water pump 3's operating temperature caused by this, ensuring stable operation and service life of the equipment.

[0042] Continue to refer to Figure 1 The dishwasher of this invention features a detachable filter cup 4 in the middle of the water collection tank 11, with a filter screen mounted on the filter cup 4. The specific working process is as follows: During the dishwasher's washing phase, the water flow after washing the dishes enters the water collection tank 11 area of ​​the water tank 1 through the filter cup 4. Since the water flow often contains food residue washed off the surface of the dishes, the built-in filter structure of the filter cup 4 effectively intercepts this solid residue when the water flows through it. This filtration mechanism effectively prevents food residue from entering the water pump 3 and spray arm system through the water suction pipe 12, thereby avoiding potential pipe blockage and equipment malfunction, and ensuring stable operation and service life of the equipment.

[0043] Dishwashers currently produce food residue that gradually accumulates on the filter cup in the sink during the washing process. Over time, this residue buildup can clog the filter, requiring frequent cleaning and negatively impacting the user experience.

[0044] To address the issue of existing dishwashers requiring frequent cleaning of accumulated residue on the filter cup, thus negatively impacting the user experience, such as... Figure 6 and Figure 7 As shown, the water collection tank 11 of this utility model is generally cylindrical, and the inner side 111 of the water collection tank 11 is tangent to the axis of the water pump 12. Specifically, a drain pipe is provided on the side of the water collection tank 11 and is connected to the corresponding drain pump 3. The drain pipe is located below the filter cup 4, and an on / off valve is provided on the drain pipe. When it is necessary to drain the water in the water collection tank 11, that is, during the drainage stage, the on / off valve is opened and the drain pump 3 is started, and the water in the water collection tank 11 is drained away through the drain pipe.

[0045] With the above configuration, during the cleaning phase, driven by the water pump 3, the water flowing into the collection tank 11 forms a rotating flow. This rotating water flow effectively washes away the residue accumulated on the filter cup 4 in the middle of the collection tank 11, allowing the washed-away residue to be discharged through the drain pipe during the drainage phase. This design solves the problem of users needing to frequently manually clean the residue on the filter cup in existing designs, not only improving the self-cleaning ability of the equipment but also significantly enhancing the user experience.

[0046] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A sink of a dishwasher, characterized in that, The water tank (1) forms a water collection tank (11) and is also provided with a water pump (12). The outlet end (122) of the water pump (12) is used to connect to the water pump (3) of the dishwasher, and the inlet end (121) of the water pump (12) is connected to the water collection tank (11). The inlet end (121) of the pumping pipe (12) extends downward to form a water-blocking surface (131) to reduce the water inlet height of the inlet end (121).

2. The sink of the dish washer according to claim 1, wherein, The inlet end (121) of the pumping pipe (12) is provided with a constriction member (13), and the water-blocking surface (131) is formed on the constriction member (13). 3.The sink of the dish washer according to claim 2, wherein, The end face of the constricted member (13) facing the water collection trough (11) is adapted to the inner side (111) of the water collection trough (11). 4.The sink of the dish washer according to claim 2, wherein, The constriction member (13) also includes an inner top surface (132), which gradually constricts downward in the opposite direction of pumping until it connects with the water-blocking surface (131).

5. The sink of the dish washer according to claim 4, wherein, The constriction member (13) also includes an inner bottom surface (133), which gradually narrows upward in the opposite direction of pumping and thus forms a pumping channel (14) with the inner top surface (132). 6.The sink of the dish washer according to claim 5, wherein The inlet of the constricted member (13) is formed as a flat opening structure. 7.The sink of the dish washer according to claim 2, wherein The constricted component (13) is integrally formed with the pumping pipe (12). 8.The sink of the dish washer according to claim 1, wherein The inner side (111) of the water collection trough (11) is tangent to the axis of the water pumping pipe (12).

9. A dishwasher, characterized in that The dishwasher includes the water tank of the dishwasher according to any one of claims 1 to 8. 10.The dish washer of claim 9, wherein The dishwasher also includes a water pump (3), which is connected to the outlet end (122) of the water pump pipe (12).

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