Water tank assembly and dish washing machine

Abstract

The utility model discloses a water tank assembly for a dish-washing machine and the dish-washing machine, and belongs to the technical field of household equipment. The water tank assembly comprises a water tank and a one-way valve, the water tank is provided with a water inlet runner and a water storage cavity which are separated, the water inlet runner is provided with a first inlet and a first outlet, and the one-way valve is configured to control the water inlet runner to be unidirectionally communicated from the first inlet to the first outlet. According to the water tank assembly, anti-siphon can be achieved through the one-way valve, and pollution caused by reverse flow of water in the water tank assembly is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a water tank assembly and a dishwasher including the water tank assembly. Background Art

[0002] A dishwasher is a device for washing tableware, which reduces people's labor intensity, improves work efficiency, and enhances cleanliness and hygiene. In related technologies, siphon phenomenon occurs when the water tank of the dishwasher is filled with water, resulting in reverse flow of water and pollution of the water source. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems in the related technologies to some extent.

[0004] To this end, an object of the utility model is to provide a water tank assembly for a dishwasher, which can prevent siphon through a one-way valve and avoid pollution caused by reverse flow of water in the water tank assembly.

[0005] Another object of the utility model is to provide a dishwasher including the aforementioned water tank assembly.

[0006] According to the water tank assembly of the embodiment of the utility model, the water tank assembly includes a water tank and a one-way valve. The water tank is provided with a water inlet channel and a water storage cavity, the water inlet channel and the water storage cavity are separated, the water inlet channel has a first inlet and a first outlet, and the one-way valve is configured to control the one-way conduction of the water inlet channel from the first inlet to the first outlet.

[0007] According to the water tank assembly of the embodiment of the utility model, siphon can be prevented through the one-way valve, and pollution caused by reverse flow of water in the water tank assembly can be avoided.

[0008] In addition, according to the water tank assembly of the above embodiment of the utility model, the following additional technical features may further be provided:

[0009] Optionally, the highest point of the water inlet channel is lower than the highest water storage level of the water storage cavity.

[0010] Optionally, the water tank assembly further includes a flow detection member, and the flow detection member is arranged in the water inlet channel and upstream of the one-way valve.

[0011] Optionally, the water inlet channel includes a first channel and a second channel, the first channel is communicated with the second channel, the first channel is communicated with the first inlet, the second channel is communicated with the first outlet, the first channel and the second channel are arranged side by side, the flow detection member is arranged on the first channel, and the one-way valve is arranged on the second channel.

[0012] Optionally, the water inlet flow channel is provided with a mounting portion having a through hole allowing water flow through, and the one-way valve is disposed in the mounting portion and configured to control the one-way conduction of the through hole.

[0013] Optionally, the mounting portion is provided with a mounting groove, the bottom of the mounting groove is provided with the through hole, the one-way valve has opposite ends, one end of the one-way valve is in abutting fit with the bottom of the mounting groove, and the other end is in interference fit with the inner peripheral surface of the mounting groove.

[0014] Optionally, an air vent and overflow port is provided at the top of the water storage cavity, the water tank includes an anti-siphon channel, and the anti-siphon channel includes a first air flow channel, one end of the first air flow channel communicates with the air vent and overflow port, and the other end communicates with an inner tank interface provided in the water tank and separated from the water storage cavity.

[0015] Optionally, the anti-siphon channel further includes a second air flow channel, one end of the second air flow channel communicates with the first air flow channel, and the other end communicates with a vent hole provided in the water tank and communicating with the external space of the dishwasher.

[0016] Optionally, the second air flow channel includes a first portion and a second portion, the first portion and the second portion are connected in series, the first portion communicates with the first air flow channel, the second portion communicates with the vent hole, and the highest point of the second portion is higher than the highest point of the first portion.

[0017] Optionally, the vent hole is provided at the top of the water tank, the water tank is provided with a vent port, the vent port is connected to the vent hole through a pipeline, and the vent port is configured to communicate with the external space of the dishwasher.

[0018] Optionally, the water tank further includes a drainage channel, the anti-siphon channel further includes a third air flow channel, one end of the third air flow channel communicates with the drainage channel, and a one-way element is provided between the other end of the third air flow channel and the second air flow channel, and the one-way element is configured to conduct unidirectionally from the second air flow channel to the third air flow channel.

[0019] The dishwasher according to an embodiment of the present invention includes the water tank assembly as described above.

[0020] The dishwasher according to an embodiment of the present invention, by applying the foregoing water tank assembly, can improve the cleaning degree of the dishwasher, avoid the water flow pollution in the dishwasher, and avoid the water flow leakage in the dishwasher. Description of the Drawings

[0021] Figure 1 is an internal structure diagram of the water tank assembly in some embodiments of the present invention.

[0022] Figure 2 Is an isometric view of the water tank assembly in some embodiments of the present utility model.

[0023] Figure 3 Is a partial schematic view of the water tank assembly in some embodiments of the present utility model (mainly showing the second cavity).

[0024] Figure 4 Is a partial schematic view of the water tank assembly in some embodiments of the present utility model (mainly showing the first cavity).

[0025] Figure 5 Is a partial structural diagram of the water tank assembly in some embodiments of the present utility model.

[0026] Reference numerals:

[0027] Water tank assembly 100, water tank 10, water inlet channel 11, first inlet 111, first outlet 112, first channel 113, second channel 114, water storage cavity 12, second inlet 13, second outlet 14, anti-siphon channel 15, first air channel 151, second air channel 152, first part 1521, second part 1522, third air channel 153, inner tank interface 16, ventilation hole 17, drainage channel 18, check valve 20, one-way element 30, flow detection member 40, water supply channel 50, mounting portion 60, mounting groove 61, through hole 62, ventilation overflow port 70, ventilation port 80, height direction A - A, width direction B - B. Detailed description of the specific implementation

[0028] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where 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 intended to explain the present utility model and should not be construed as limiting the present utility model.

[0029] The present utility model provides a water tank assembly 100 for a dishwasher and a dishwasher. The water tank assembly 100 can achieve anti-siphon through the check valve 20 to prevent the water in the water tank assembly 100 from flowing back and causing pollution.

[0030] Refer to Figures 1 to 5 , according to the water tank assembly 100 of the embodiment of the present utility model, the water tank assembly 100 includes a water tank 10 and a check valve 20.

[0031] Among them, the water tank 10 is provided with a water inlet flow channel 11 and a water storage cavity 12. The water inlet flow channel 11 and the water storage cavity 12 are separated. The water inlet flow channel 11 has a first inlet 111 and a first outlet 112. The one-way valve 20 is configured to control the one-way conduction of the water inlet flow channel 11 from the first inlet 111 to the first outlet 112. In this way, by integrating the one-way valve 20 onto the water tank 10, anti-siphon can be achieved, and the backflow of water in the water tank assembly 100 can be avoided, preventing pollution.

[0032] Specifically, the dishwasher further includes a pipe network connected to a water source and a water softener. The water inlet flow channel 11 of the water tank 10 can be respectively connected to the pipe network and the water softener. That is, the first inlet 111 of the water inlet flow channel 11 is connected to the pipe network, and the first outlet 112 of the water inlet flow channel 11 is connected to the interior of the water softener. Water can flow from the pipe network through the water inlet flow channel 11 into the water softener. After the water is softened by the water softener, it is discharged into the water storage cavity 12 of the water tank 10, facilitating the water use during the washing stage of the dishwasher. A one-way valve 20 is provided in the water tank 10. The one-way valve 20 controls the one-way conduction of the water inlet flow channel 11 from the first inlet 111 to the first outlet 112. In other words, water flows unidirectionally from the first inlet 111 to the first outlet 112. In this way, when there is a pressure difference between the first inlet 111 and the first outlet 112, the one-way valve 20 can prevent water from flowing back from the softener to the pipe network, causing pollution to the pipe network.

[0033] In addition, the one-way valve 20 can be arranged at the first inlet 111; or, the one-way valve 20 can be arranged at the first outlet 112; or, the one-way valve 20 can be arranged inside the water inlet flow channel 11 to achieve the one-way conduction of the water inlet flow channel 11.

[0034] In addition, in the related art, an anti-siphon structure is provided in the water inlet flow channel 11 of the water tank 10. The anti-siphon structure can be communicated with the air flow channel in the water tank 10 to communicate with the outside atmosphere. In this way, the water inlet flow channel 11 can balance the air pressure in the water inlet flow channel 11 through the anti-siphon structure to achieve anti-siphon. However, since the anti-siphon structure is communicated with the air flow channel, and the water inlet flow channel 11 has a communication relationship with the water storage cavity 12, therefore, the anti-siphon structure needs to be set higher than the water storage level to prevent water leakage at the connection between the anti-siphon structure and the air flow channel. This results in the occupation of the upper space of the water storage cavity 12 by the water inlet flow channel 11, and the water storage capacity of the water storage cavity 12 is much lower than the original designed water storage capacity. In addition, under normal circumstances, water can cross the connection between the anti-siphon structure and the air flow channel under the action of pressure, but when the water pressure is relatively large, water will leak from the connection. And since the air flow channel is also communicated with the inner cavity of the dishwasher to balance the air pressure in the inner cavity of the dishwasher, the unsoftened water flow in the water inlet flow channel 11 will leak into the inner cavity, thus affecting the washing effect of the dishwasher. Therefore, in the embodiment of the present invention, a one-way valve 20 is integrated in the water tank 10, and the one-way valve 20 is used to control the one-way conduction of the water inlet flow channel 11 from the first inlet 111 to the first outlet 112 to achieve anti-siphon. In this way, the water inlet flow channel 11 can be separated from the outside atmosphere, avoiding water leakage in the water inlet flow channel 11, and the water inlet flow channel 11 can be flexibly arranged at any position in the water tank 10 to improve the space utilization rate of the water tank 10 and increase the water storage capacity of the water storage cavity 12.

[0035] Therefore, for the water tank assembly 100 according to the embodiment of the present invention, anti-siphon can be achieved through the one-way valve 20, avoiding the reverse flow of water in the water tank assembly 100 and causing pollution.

[0036] Referring to Figures 1 to 4 , in some embodiments of the present invention, the highest point of the water inlet flow channel 11 is lower than the highest water storage level of the water storage cavity 12; in combination with the foregoing, it can be understood that the water tank 10 is integrated with a one-way valve 20. While achieving the anti-siphon function through the one-way valve 20, water leakage of the water inlet flow channel 11 due to pressure is avoided. Therefore, the highest point of the water inlet flow channel 11 can be set lower than the highest water storage level of the water storage cavity 12, thereby reducing the occupation of the upper space of the water storage cavity 12 by the water inlet flow channel 11 and increasing the water storage capacity in the water storage cavity 12, facilitating better washing of the dishwasher.

[0037] Referring to Figures 1 to 4 , in some embodiments of the present invention, the height h1 of the highest point of the water inlet flow channel 11 relative to the bottom of the water storage cavity 12 and the height h2 of the highest water storage level of the water tank 10 relative to the bottom of the water storage cavity 12 satisfy: h1 / h2 ≤ 1 / 2; by setting in this way, the space occupation of the water inlet flow channel 11 in the water tank 10 can be reduced, thereby increasing the water storage space of the water storage cavity 12 to improve the working performance of the dishwasher.

[0038] Specifically, in the height direction of the water tank assembly 100, the distance between the highest point of the water inlet flow channel 11 and the bottom of the water storage cavity 12 is h1, the distance between the highest water storage level of the water storage cavity 12 and the bottom of the water storage cavity 12 is h2, and the ratio of h1 to h2 is not greater than 0.25, so as to reduce the height arrangement of the water inlet flow channel 11 in the water tank 10, thereby providing a larger water storage space for the water storage cavity 12. Moreover, the one-way conduction of the water inlet flow channel 11 is controlled by the one-way valve 20, and the low position setting of the water inlet flow channel 11 will not cause phenomena such as siphon and water leakage, so as to improve the working stability of the dishwasher.

[0039] Referring to Figures 1 to 4 , in some embodiments of the present utility model, the water tank assembly 100 further includes a flow detection member 40. The flow detection member 40 is arranged in the water inlet flow channel 11 and is located upstream of the one-way valve 20. In this way, when the water tank 10 is filled with water, the flow detection member 40 can detect the water flow rate in the water inlet flow channel 11, and the control system of the dishwasher can control the water inlet flow rate through the flow detection member 40 to ensure the cleaning effect of the dishwasher. In addition, the flow detection member 40 can be arranged upstream of the one-way valve 20, so as to avoid the influence of water flow back on the detection accuracy of the flow detection member 40.

[0040] Referring to Figures 1 to 4 , in some embodiments of the present utility model, the water inlet flow channel 11 includes a first flow channel 113 and a second flow channel 114. The first flow channel 113 is communicated with the second flow channel 114. The first flow channel 113 is communicated with the first inlet 111. The flow detection member 40 can be arranged in the first flow channel 113, and the one-way valve 20 can be arranged in the second flow channel 114. In this way, the flow detection member 40 and the one-way valve 20 can be respectively arranged in two flow channels, so as to reduce the mutual interference between the flow detection member 40 and the one-way valve 20.

[0041] Referring to Figure 5 , in some embodiments of the present utility model, the water inlet flow channel 11 is provided with an installation part 60. The installation part 60 has a through hole 62 allowing water flow through. The one-way valve 20 is arranged in the installation part 60 and is configured to control the one-way conduction of the through hole 62. Specifically, when the water inlet flow channel 11 is filled with water, the water flow in the water inlet flow channel 11 can flow through the installation part 60 and pass through the through hole 62 of the installation part 60. At this time, the one-way valve 20 arranged in the installation part 60 can control the one-way conduction of the through hole 62, so that the water flow flows unidirectionally from the first inlet 111 to the first outlet 112, realizing anti-siphon.

[0042] Referring to Figure 5, in some embodiments of the present utility model, the mounting portion 60 is provided with a mounting groove 61, and a through hole 62 is provided at the bottom of the mounting groove 61. The one-way valve 20 has opposite ends. One end of the one-way valve 20 is in abutting fit with the bottom of the mounting groove 61, and the other end is in interference fit with the inner peripheral surface of the mounting groove 61; in this way, the mounting strength of the one-way valve 20 can be improved, and the one-way valve 20 can be prevented from falling off, affecting the anti-siphon function.

[0043] Specifically, the mounting portion 60 is provided with a mounting groove 61, and the one-way valve 20 can be inserted into the mounting groove 61. Among them, one end of the one-way valve 20 can abut against the bottom of the mounting groove 61, and a convex rib can be provided on the outer peripheral surface of the other end. The convex rib can be in interference fit with the inner peripheral surface of the mounting groove 61 to improve the mounting strength of the one-way valve 20. In practice, the one-way valve 20 can be a button one-way valve 20. The one-way valve 20 is provided with a valve sheet and an elastic member. The valve sheet is used to open and close the flow channel in the one-way valve 20. The elastic member is connected to the valve sheet and has an elastic force for driving the valve sheet to close the flow channel. When water enters the water inlet channel 11, the water pressure can overcome the elastic force of the elastic member to drive the valve sheet to open, so that the water can pass through the one-way valve 20. When the water in the water inlet channel 11 flows backward, the valve sheet can remain tightly closed to prevent the occurrence of the siphon phenomenon.

[0044] Refer to Figures 1 to 4 , in some embodiments of the present utility model, the first inlet 111 and the first outlet 112 of the water inlet channel 11 are provided at the lower end of the water tank 10. The water storage cavity 12 is provided with a second inlet 13 and a second outlet 14. The first inlet 111, the first outlet 112, the second inlet 13 and the second outlet 14 are arranged side by side at the bottom of the water tank 10; in this way, the pipeline layout of the dishwasher can be facilitated.

[0045] Specifically, the first inlet 111 and the first outlet 112 of the water inlet channel 11 are provided at the lower end of the water tank 10, which can further reduce the layout height of the water inlet channel 11, thereby reducing the space occupied by the water tank 10 and increasing the water storage space of the water storage cavity 12. Additionally, the first inlet 111, the first outlet 112, the second inlet 13, and the second outlet 14 are arranged side by side at the bottom of the water tank 10, which facilitates the space layout of the dishwasher and improves the assembly efficiency. More specifically, the first inlet 111 can be connected to the pipe network, the first outlet 112 and the second inlet 13 can be connected to the inside of the water softener, and the second outlet 14 can be connected to the water pump. The water pump can pump the water flow into the water storage cavity 12 to realize the circulating flow of the water flow in the water storage cavity 12. During the circulating flow process, the water flow can exchange heat with the wastewater generated by washing, thereby recovering the waste heat of the wastewater and improving the energy utilization rate. When the dishwasher is working, the water flow can enter the first inlet 111 from the pipe network, then be discharged from the first outlet 112 to the water softener, enter the water storage cavity 12 from the second inlet 13 after being softened by the water softener, and then be discharged from the second outlet 14. Therefore, components such as the pipe network, the water softener, and the water pump can be uniformly arranged at the lower end of the water tank 10, which is convenient for the connection between the water tank 10 and the components and improves the assembly efficiency.

[0046] In addition, in some specific examples, the first inlet 111, the first outlet 112, the second inlet 13, and the second outlet 14 can be configured as tubular structures extending in the height direction. Through the tubular structures, the first inlet 111, the first outlet 112, the second inlet 13, and the second outlet 14 can be quickly plugged into other components in the dishwasher, improving the assembly efficiency.

[0047] Referring to Figures 1 to 4 , in some embodiments of the present utility model, an air vent overflow port 70 is provided at the top of the water storage cavity 12, and the air vent overflow port 70 is connected to the inner liner of the dishwasher. In this way, when the water storage volume in the water storage cavity 12 exceeds a predetermined value, the excess water flow in the water storage cavity 12 will flow to the inner liner of the dishwasher through the air vent overflow port 70, avoiding the water storage volume in the water storage cavity 12 exceeding the predetermined value and causing damage to the water tank 10. And in some specific examples, the water storage cavity 12 can be connected to the external space of the dishwasher through the air vent overflow port 70, and the air vent overflow port 70 can maintain the air pressure balance in the water storage cavity 12 and the inner liner of the dishwasher to improve the working stability of the dishwasher.

[0048] Further, the water tank 10 includes an anti-siphon channel 15. The anti-siphon channel 15 includes a first air flow channel 151. One end of the first air flow channel 151 communicates with the ventilation overflow port 70, and the other end communicates with an inner tank interface 16 provided in the water tank 10 and separated from the water storage chamber 12. Specifically, the inner tank interface 16 of the water tank 10 can communicate with the inner tank of the dishwasher. When the water storage chamber 12 is filled with water, the actual water level in the water storage chamber 12 exceeds the predetermined water level, and the excess water in the water storage chamber 12 can be discharged to the inner tank of the dishwasher through the first air flow channel 151, preventing the water storage volume in the water storage chamber 12 from exceeding the safe capacity and improving the safety performance of the water tank assembly 100.

[0049] In addition, in some specific examples, the water tank 10 is further provided with a water supply flow channel 50. One end of the water supply flow channel 50 communicates with the second inlet 13, and the other end communicates with the top of the water storage chamber 12. In the height direction, the highest point of the water supply flow channel 50 is higher than the highest point of the first air flow channel 151. In this way, the water supply flow channel 50 can communicate with the first air flow channel 151 through the top of the water storage chamber 12, thereby communicating with the external atmosphere, preventing siphon phenomenon in the water supply flow channel 50, and the high-position water inlet of the water supply flow channel 50 can reduce the pressure in the flow channel, thus preventing damage to the flow channel structure.

[0050] Refer to Figures 1 to 4 In some embodiments of the present utility model, the anti-siphon channel 15 further includes a second air flow channel 152. One end of the second air flow channel 152 communicates with the first air flow channel 151, and the other end communicates with a ventilation hole 17 provided in the water tank 10 and communicating with the external space of the dishwasher. In this way, the air pressure balance inside the dishwasher can be maintained through the second air flow channel 152 to ensure the stability of the dishwasher operation.

[0051] Specifically, when the air pressure inside the water storage chamber 12 changes, such as when the water storage chamber 12 is filled with water or drained, the water storage chamber 12 can communicate with the external atmosphere through the first air flow channel 151 and the second air flow channel 152, thereby maintaining the air pressure stability inside the water storage chamber 12. Additionally, when the air pressure inside the inner tank of the dishwasher changes, such as when the steam in the inner tank of the dishwasher is discharged, the inner tank of the dishwasher can communicate with the external atmosphere through the first air flow channel 151 and the second flow channel, thereby maintaining the air pressure stability inside the water storage chamber 12.

[0052] Refer to Figures 1 to 4 In some embodiments of the present utility model, the second air flow channel 152 includes a first part 1521 and a second part 1522. The first part 1521 and the second part 1522 are connected in series. The first part 1521 communicates with the first air flow channel 151, and the second part 1522 communicates with the ventilation hole 17. The highest point of the second part 1522 is higher than the highest point of the first part 1521. In this way, water leakage of the water tank assembly 100 can be avoided, affecting the user experience.

[0053] Combined with the foregoing, the water storage cavity 12 is communicated with the dishwasher inner cavity through the first air flow channel 151, so as to discharge the redundant water flow to the dishwasher inner cavity. And the water storage cavity 12 is communicated with the external atmosphere through the first air flow channel 151, the second air flow channel 152 and the ventilation hole 17 to maintain the pressure balance in the water storage cavity 12. It can be understood that when the water storage cavity 12 discharges the redundant water flow, the redundant water flow can flow to the outside of the water tank assembly 100 through the first air flow channel 151, the second air flow channel 152 and the ventilation hole 17, resulting in water leakage of the dishwasher and affecting the user experience. Therefore, the highest point of the second part 1522 of the second air flow channel 152 can be set higher than the highest point of the first part 1521. In this way, there is a height difference between the second part 1522 and the first part 1521 of the second air flow channel 152, so as to prevent the water flow from discharging through the ventilation hole 17.

[0054] In practical applications, there are multiple setting methods for the first part 1521 and the second part 1522 of the second air flow channel 152 to prevent water leakage through the ventilation hole 17. For example, at least one of the first part 1521 and the second part 1522 of the second air flow channel 152 can be configured as a structure that slopes downward in the direction from the ventilation hole 17 to the first air flow channel 151 to prevent water leakage through the ventilation hole 17. Of course, the second air flow channel 152 can also include a third part, and the third part is respectively connected to the first part 1521 and the second part 1522 to form a stepped structure, and this stepped structure can prevent the water flow from discharging through the ventilation hole 17.

[0055] Referring to Figures 1 to 4 , in some embodiments of the present utility model, the ventilation hole 17 is arranged at the top of the water tank 10. In this way, the exhaust path of the water storage cavity 12 can be shortened, and the air pressure balance effect of the dishwasher can be improved.

[0056] Specifically, the air flow path from the water storage cavity 12 to the external space of the dishwasher is: the ventilation overflow port 70, the first air flow channel 151, the second air flow channel 152, the ventilation hole 17. Since the ventilation overflow port 70 is arranged at the top of the water storage cavity 12, the ventilation hole 17 can be arranged at the top of the water tank 10, so that the air flow path between the ventilation overflow port 70 and the ventilation hole 17 is shortened, facilitating the rapid achievement of air pressure balance between the water storage cavity 12 and the dishwasher inner cavity. For example, when the dishwasher inner cavity is washed with high-temperature steam, the high-temperature gas can be quickly discharged to the outside of the dishwasher through the ventilation hole 17, avoiding affecting the normal operation of the dishwasher.

[0057] Further, the water tank 10 is provided with a vent 80. The vent 80 is connected to the vent hole 17 through a pipeline, and the vent 80 is configured to communicate with the external space of the dishwasher. For example, when the water storage chamber 12 exhausts air, the air flow can sequentially pass through the ventilation overflow port 70, the first air flow channel 151, the second air flow channel 152, and the vent hole 17 to achieve exhaust. If the amount of air to be exhausted is large, a part of the air flow can bypass the vent hole 17 and flow to the vent 80 for discharge, so as to improve the exhaust efficiency of the water storage chamber 12. Of course, the setting of the vent 80 can also increase the suction efficiency, thereby improving the air pressure stability of the dishwasher.

[0058] Referring to Figures 1 to 4 , in some embodiments of the present invention, the water tank 10 further includes a drainage channel 18. The anti-siphon channel 15 is further provided with a third air flow channel 153. One end of the third air flow channel 153 communicates with the drainage channel 18, and a one-way element 30 is provided between the other end of the third air flow channel 153 and the second air flow channel 152. The one-way element 30 is set to conduct unidirectionally from the second air flow channel 152 to the third air flow channel 153. In this way, drainage anti-siphon can be realized, and sewage backflow into the dishwasher inner tank can be avoided, resulting in pollution of the dishwasher inner tank.

[0059] Specifically, the drainage channel 18 communicates with the dishwasher inner tank and the outside respectively, and is used to drain the waste water in the dishwasher inner tank. The drainage channel can communicate with the second air flow channel 152 through the third air flow channel 153. When siphon occurs in the drainage channel 18 due to the pressure difference with the outside, the air flow can supplement gas to the drainage channel 18 along the vent hole 17, the second air flow channel 152, and the third air flow channel 153 to maintain the air pressure balance of the drainage channel 18, avoid the occurrence of siphon phenomenon in the drainage channel 18, and thus avoid sewage backflow into the dishwasher inner tank causing pollution.

[0060] In addition, a one-way element 30 is provided at the connection between the other end of the third air flow channel 153 and the second air flow channel 152. The one-way element 30 can keep the third air flow channel 153 and the second air flow channel 152 separated under the action of gravity or elasticity. When the pressure in the drainage channel 18 is less than the outside, the outside atmosphere can overcome the gravity or elasticity of the one-way element 30, thereby driving the one-way element 30 to open, so that the outside atmosphere fills the drainage channel 18 with air along the vent hole 17, the second air flow channel 152, and the third air flow channel 153.

[0061] Referring to Figures 1 to 4 , for the dishwasher according to the embodiment of the present invention, the dishwasher includes the water tank assembly 100 described above. By applying the aforementioned water tank assembly 100, the cleaning degree of the dishwasher can be improved, the water flow pollution in the dishwasher can be avoided, and the water flow leakage in the dishwasher can be avoided.

[0062] Specifically, the water tank 10 is provided with an inlet water flow channel 11, a water supply flow channel 50, a water storage cavity 12, and a drainage flow channel 18; when the dishwasher is working, water flows into from the first inlet 111 of the inlet water flow channel 11, and after passing through the inlet water flow channel 11, it is discharged from the first outlet 112 to the water softener. The water softener can perform water softening treatment on the water flow, and then enters the water supply flow channel 50 through the second inlet 13, so as to supply water to the water storage cavity 12. The water flow in the water storage cavity 12 can flow out from the second outlet 14 to the water pump, and the water pump can pump the water flow back into the water storage cavity 12 again, realizing the circulating flow of the water flow in the water storage cavity 12. And during the circulating flow process, the water flow can exchange heat with the waste water generated by washing, so as to recover the waste heat in the waste water and improve the energy utilization rate. Finally, the waste water with recovered waste heat can be discharged to the outside of the dishwasher through the drainage flow channel 18; wherein, a one-way valve 20 is provided in the inlet water flow channel 11, and the one-way valve 20 controls the inlet water flow channel 11 to conduct unidirectionally from the first inlet 111 to the first outlet 112, so as to prevent the water flow from flowing back to the water source and causing pollution.

[0063] Furthermore, due to the cooperative setting of the one-way valve 20 and the inlet water flow channel 11, the layout of the inlet water flow channel 11 in the water tank 10 can be not affected by pressure. The highest point of the inlet water flow channel 11 can be set lower than the highest water storage level of the water storage cavity 12, so as to reduce the space occupied by the water storage cavity 12, increase the water storage capacity of the water storage cavity 12, and improve the washing effect of the dishwasher. In addition, the height h1 of the highest point of the inlet water flow channel 11 relative to the bottom of the water storage cavity 12 and the height h2 of the highest water storage level of the water tank 10 relative to the bottom of the water storage cavity 12 satisfy: h1 / h2≤1 / 2, so as to reduce the space occupied by the inlet water flow channel 11 in the water tank 10 and increase the water storage space of the water storage cavity 12.

[0064] In addition, the first inlet 111 and the first outlet 112 of the inlet water flow channel 11, and the second inlet 13 and the second outlet 14 of the water storage cavity 12 are arranged side by side at the bottom of the water tank 10. In this way, the structural members connected to the water tank 10 in the dishwasher can be arranged on the same side of the water tank 10, which can improve the space utilization rate of the dishwasher.

[0065] Even further, the water tank 10 is provided with a first air flow channel 151 and a second air flow channel 152. The first air flow channel 151 is respectively communicated with the top of the water storage cavity 12 and the inner tank structure, and is used for discharging the water flow in the water storage cavity 12 exceeding the predetermined capacity to the inner tank of the dishwasher to ensure the safety of the water tank 10. The second air flow channel 152 is respectively communicated with the first air flow channel 151 and the ventilation hole 17 to balance the air pressure in the water storage cavity 12 and the inner tank of the dishwasher, so as to improve the working stability of the dishwasher; wherein, the second air flow channel 152 includes a first part 1521 and a second part 1522, and the second part 1522 is higher than the first part 1521, so as to prevent the water flow in the water storage cavity 12 from being discharged from the ventilation hole 17 through the first air flow channel 151 and the second air flow channel 152, resulting in water leakage of the dishwasher.

[0066] Further, the water tank 10 is provided with a third air flow channel 153. The third air flow channel 153 is respectively communicated with the drainage channel 18 and the second air flow channel 152. And a one-way element 30 is provided at the communication part of the third air flow channel 153 and the second air flow channel 152. The one-way element 30 is set to be unidirectionally conductive from the second air flow channel 152 to the third air flow channel 153. In this way, when a phenomenon occurs in the drainage channel 18, air can flow along the ventilation hole 17, the second air flow channel 152 and the third air flow channel 153 to supplement gas to the drainage channel 18 to maintain the air pressure balance of the drainage channel 18, thereby avoiding the occurrence of siphon phenomenon in the drainage channel 18.

[0067] In addition, a flow detection element 40 is further provided in the water inlet channel 11 for detecting the water flow rate in the water inlet channel 11, and the flow detection element 40 is arranged upstream of the one-way valve 20 to avoid the influence of water flow countercurrent on the detection accuracy of the flow detection element 40.

[0068] In some specific examples of the present utility model, the water tank 10 is provided with a ventilation port and a sixth flow channel. In the width direction of the water tank 10, the ventilation port, the drainage channel 18, the water inlet channel 11 and the water storage cavity 12 are arranged side by side, so as to improve the space utilization rate of the water tank 10. The sixth flow channel is respectively communicated with the second air flow channel 152 and the ventilation port, thereby further improving the anti-siphon effect of the dishwasher.

[0069] In some embodiments of the present utility model, a sealed one-way valve 20 structure is integrated in the water inlet channel 11 at the front end of the water tank 10, and the anti-siphon function of the product for water inlet is ensured through the one-way valve 20. The one-way valve 20 can be placed at a lower position and will not cause leakage, and finally realize the full soft water inlet of the dishwasher. In addition, a ventilation hole 17, an overflow port and a first air flow channel 151 are arranged at the highest position of the water tank 10. The first air flow channel 151 is directly connected to the inner cavity of the dishwasher, and at the same time is communicated with the outside atmosphere through the second air flow channel 152. Therefore, the air pressure balance between the water tank 10 and the dishwasher can be realized, and when the water tank 10 is full of water, it can overflow to the inner cavity of the dishwasher.

[0070] In the description of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0071] In the present utility model, unless otherwise clearly stipulated and defined, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the connection inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0072] In the present utility model, unless otherwise clearly stipulated and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0073] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0074] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A water tank assembly for a dishwasher, characterized in that, Comprising: A water tank (10), the water tank (10) is provided with a water inlet flow channel (11) and a water storage cavity (12), the water inlet flow channel (11) and the water storage cavity (12) are separated, the water inlet flow channel (11) has a first inlet (111) and a first outlet (112); A one-way valve (20), the one-way valve (20) is configured to control the one-way conduction of the water inlet flow channel (11) from the first inlet (111) to the first outlet (112).

2. The water tank assembly according to claim 1, characterized in that, The highest point of the water inlet flow channel (11) is lower than the highest water storage level of the water storage cavity (12).

3. The water tank assembly according to claim 1, characterized in that, It further includes a flow detection member (40), the flow detection member (40) is arranged in the water inlet flow channel (11) and is located upstream of the one-way valve (20).

4. The water tank assembly according to claim 3, wherein The water inlet flow channel (11) includes a first flow channel (113) and a second flow channel (114), the first flow channel (113) is communicated with the second flow channel (114), the first flow channel (113) is communicated with the first inlet (111), the second flow channel (114) is communicated with the first outlet (112), the flow detection member (40) is arranged on the first flow channel (113), and the one-way valve (20) is arranged on the second flow channel (114).

5. The water tank assembly according to claim 1, wherein The water inlet flow channel (11) is provided with a mounting portion (60), the mounting portion (60) has a through hole (62) allowing water to pass through, the one-way valve (20) is arranged on the mounting portion (60) and is configured to control the one-way conduction of the through hole (62).

6. The water tank assembly according to claim 5, characterized in that, The mounting portion (60) is provided with a mounting groove (61), the bottom of the mounting groove (61) is provided with the through hole (62), the one-way valve (20) has opposite ends, one end of the one-way valve (20) is in abutting fit with the bottom of the mounting groove (61), and the other end is in interference fit with the inner peripheral surface of the mounting groove (61).

7. The water tank assembly according to claim 1, characterized in that, The top of the water storage cavity (12) is provided with a ventilation overflow port (70), the water tank (10) includes an anti-siphon channel (15), the anti-siphon channel (15) includes a first air flow channel (151), one end of the first air flow channel (151) is communicated with the ventilation overflow port (70), and the other end is communicated with an inner tank interface (16) arranged in the water tank (10) and separated from the water storage cavity (12).

8. The water tank assembly according to claim 7, characterized in that, The anti-siphon channel (15) further includes a second air flow channel (152), one end of the second air flow channel (152) is communicated with the first air flow channel (151), and the other end is communicated with a ventilation hole (17) arranged in the water tank (10) and communicated with the external space of the dishwasher.

9. The water tank assembly according to claim 8, characterized in that, The second air flow channel (152) includes a first part (1521) and a second part (1522), the first part (1521) and the second part (1522) are connected in series and communicated, the first part (1521) is communicated with the first air flow channel (151), the second part (1522) is communicated with the ventilation hole (17), and the highest point of the second part (1522) is higher than the highest point of the first part (1521).

10. The water tank assembly according to claim 8, characterized in that, The vent hole (17) is provided at the top of the water tank (10), the water tank (10) is provided with a vent port (80), the vent port (80) is connected to the vent hole (17) through a pipeline, and the vent port (80) is configured to communicate with the external space of the dishwasher.

11. The water tank assembly according to claim 8, wherein, The water tank (10) further includes a drainage channel (18), the anti-siphon channel (15) further includes a third air flow channel (153), one end of the third air flow channel (153) communicates with the drainage channel (18), and a one-way element (30) is provided between the other end of the third air flow channel (153) and the second air flow channel (152), and the one-way element (30) is configured to conduct unidirectionally from the second air flow channel (152) to the third air flow channel (153).

12. A dishwasher, characterized in that, A water tank assembly according to any one of claims 1-11.

Images