Dishwasher sink drainage method, drainage structure and dishwasher

Abstract

This invention relates to a dishwasher sink drainage method, drainage structure, and dishwasher, including a sink with a motor outlet, a drain pump outlet, and a drain valve outlet connected to it. The drain pump outlet is located on the side wall of the sink and connected to a drain pump. The drain valve outlet is located at the bottom of the sink and is controlled by a drain valve. The drain valve outlet is connected to a drain pipe. This invention simultaneously provides a drain pump outlet and a drain valve outlet on the sink. Most of the water and residue are discharged from the drain pump outlet, while residual wastewater and residue in the sink are discharged from the drain valve outlet. This not only improves drainage efficiency and reduces the overall noise level of the machine, but also ensures that there is no residual water in the sink after drainage, completely solving the problem of residual water.

Description

Technical Field

[0001] The invention relates to a dishwasher, in particular to a water tank drainage structure and a drainage method installed on the dishwasher, belonging to the technical field of dishwashers. Background Art

[0002] A dishwasher is a device that uses a nozzle to spray high-pressure washing water to wash tableware. The dishwasher generally includes a dishwasher body that forms a washing chamber, a tableware input port in the front of the body, a door cover at the tableware input port, and a tableware rack in the washing chamber. During the washing process of the dishwasher, the washing circulating water flows into the washing pump through the sink, and then is sprayed out through the spray arm to wash the tableware. The washed water flows back to the sink, and the washed water is also discharged through the sink. Existing dishwashers consume a lot of water and have low water discharge efficiency. During the drainage process, the amount of residual water in the sink is large, which affects the washing and internal drying effects of the dishwasher. In addition, due to the long-term residual wastewater, odor will be generated, which affects the user experience and the overall performance of the dishwasher.

[0003] A water-saving sink disclosed in patent No. 201510124977.9 proposes a technical solution to solve the problems of residual water, low water discharge efficiency and high water consumption in existing dishwasher sinks. The sink includes a first cavity at the top and a second cavity at the bottom. The motor outlet is arranged at the bottom edge of the first cavity and extends along the tangent direction of the first cavity. The outlet of the drain pump is arranged on the side wall of the second cavity. The drain valve and the water diversion puller are arranged vertically and horizontally along the water flow direction. Although this structure can improve the problem of high water consumption to a certain extent, the improvement of water discharge efficiency is not obvious, and there will still be residual wastewater, which cannot completely solve the problem of residual water. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a dishwasher sink drainage method which can completely solve the problem of residual water and greatly improve the water discharge efficiency.

[0005] Another technical problem to be solved by the present invention is to provide a dishwasher sink drainage structure that can completely solve the problem of residual water and greatly improve the water discharge efficiency, and at the same time provide a dishwasher equipped with the sink drainage structure.

[0006] To achieve the above object, the technical solution of the present invention is:

[0007] A dishwasher sink drainage structure comprises a sink, wherein the sink is connected with a motor water outlet, a drain pump water outlet and a drain valve water outlet, wherein the drain pump water outlet is arranged on the side wall of the sink and is connected to the drain pump, and the drain valve water outlet is arranged at the bottom of the sink and is controlled by the drain valve, and the drain valve water outlet is connected to a drain pipe.

[0008] Furthermore, the drain valve is installed below the water outlet of the drain valve in the vertical direction.

[0009] Furthermore, the drainage pipe is arranged obliquely downward.

[0010] Furthermore, the angle between the central axis of the drainage pipe and the vertical line is equal to or less than 45°.

[0011] Furthermore, the drain valve includes a valve body, a motor, a cam and a valve core, the valve core is installed in the valve body, the motor is fixed on the valve body, the cam is connected to the output shaft of the motor, the valve core is composed of a connecting rod and a piston, one end of the connecting rod is connected to the cam, and the other end is connected to the piston, and the connection or disconnection of the drain valve outlet and the drain pipe is achieved through the linear reciprocating motion of the piston.

[0012] Furthermore, the top of the piston has a circle of sealing protrusions protruding upwards for sealing the through hole at the top of the valve body, and the through hole is connected to the water outlet of the drain valve.

[0013] Furthermore, the drain valve is fixedly connected to the sink in a detachable manner.

[0014] Furthermore, the water tank includes a first cavity at the top, a second cavity in the middle and a third cavity at the bottom, the motor water outlet is arranged on the side wall of the first cavity, the drain pump water outlet is arranged on the side wall of the second cavity, and the drain valve water outlet is arranged on the bottom wall of the third cavity. The second cavity is formed by the bottom wall of the first cavity being recessed downward, and the third cavity is formed by the opening on the bottom wall of the second cavity extending downward.

[0015] Another technical solution of the present invention is:

[0016] A method for draining a dishwasher sink comprises the following steps: firstly, closing a drain valve, controlling a drain pump to start, and draining water and residue in the sink from a drain channel of the drain pump; after draining is completed, closing the drain pump, opening the drain valve, and draining the remaining waste water from a water outlet of the drain valve at the bottom of the sink.

[0017] Another technical solution of the present invention is:

[0018] A dishwasher is provided with the dishwasher sink drainage structure as described above.

[0019] In summary, the present invention provides a dishwasher sink drainage method, drainage structure and dishwasher, in which a drainage pump outlet and a drainage valve outlet are simultaneously arranged on the sink, and the drainage valve outlet is arranged at the bottom of the sink. Most of the water and residue are discharged from the drainage pump outlet, and the remaining wastewater residue in the sink is discharged from the drain valve outlet at the bottom of the sink due to gravity, which not only improves the water discharge efficiency and reduces the noise index of the whole machine, but also ensures that there is no residual water left in the sink after drainage, thereby completely solving the problem of residual water. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the water tank drainage structure of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the drainage structure of the sink of the present invention. Figure 2 ;

[0022] Figure 3 It is a cross-sectional view of the water tank drainage structure of the present invention.

[0023] like Figures 1 to 3 As shown, a water tank 1, a motor water outlet 2, a drain pump water outlet 3, a drain valve water outlet 4, a drain valve 5, a first cavity 6, a second cavity 7, a third cavity 8, a drain pipe 9, a valve body 10, a motor 11, a cam 12, a connecting rod 13, a piston 14, a through hole 15, a sealing protrusion 16, a reinforcement ring 17, a mounting boss 18, a sealing ring 19, an opening 20, a drain channel 21, a connecting rod shaft 22, a housing 23, a mounting seat 24, a sealing groove 25, and a sealing groove 26. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0025] like Figures 1 to 3 As shown, a dishwasher sink drainage structure provided in the present invention includes a sink 1, on which a motor water outlet 2, a drain pump water outlet 3 and a drain valve water outlet 4 are connected, wherein the motor water outlet 2 is used to connect to the washing motor of the dishwasher, the drain pump water outlet 3 is used to connect to the drain pump of the dishwasher, and the drain valve water outlet 4 is connected to the drain valve 5.

[0026] In this embodiment, the sink 1 includes a first cavity 6 located at the top, a second cavity 7 in the middle and a third cavity 8 located at the bottom. The second cavity 7 is formed by the bottom wall of the first cavity 6 being recessed downward, and the third cavity 8 is formed by the opening 20 on the bottom wall of the second cavity 7 extending downward. The sink 1 as a whole is an integral injection molded part.

[0027] The motor water outlet 2 is arranged on the side wall of the first cavity 6 and at the bottom edge of the side wall of the first cavity 6, and the motor water outlet 2 extends along the tangent direction of the first cavity 6, which is more in line with the movement law of the fluid, improves the water outlet efficiency, and reduces the water flow noise. In order to ensure that the water in the first cavity 6 can flow smoothly into the second cavity 7 below, the bottom wall of the first cavity 6 adopts a structure that tilts downward from the peripheral edge to the center.

[0028] The drain pump outlet 3 is arranged on the side wall of the second cavity 7 and at the bottom edge of the side of the second cavity 7. The drain pump outlet 3 is connected to the drainage channel 21. An opening 20 is arranged on the bottom wall of the second cavity 7. The annular platform around the opening 20 is inclined, that is, inclined in the direction of the drain pump outlet 3, so that water can flow smoothly to the drain pump outlet 3 and flow out through the drainage channel 21, which can not only improve the drainage efficiency and reduce the drainage noise, but also improve the utilization rate of the water in the sink 1.

[0029] The drain valve outlet 4 is arranged on the bottom wall of the third cavity 8, and the drain valve outlet 4 is controlled by the drain valve 5. The drain valve outlet 4 is connected to the drain pipe 9. In this embodiment, the drain valve 5 is installed below the drain valve outlet 4 in the vertical direction, and the drain pipe 9 is arranged obliquely downward, and the angle between the central axis of the drain pipe 9 and the vertical line is preferably equal to or less than 45°. In this way, the water in the sink 1 can flow downward in the vertical direction according to gravity, which is conducive to clean drainage and ensures that no residual water is retained.

[0030] like Figure 2 and Figure 3 As shown, the drain valve 5 includes a valve body 10, a motor 11, a cam 12 and a valve core, wherein the valve core is composed of a connecting rod 13 and a piston 14, the connecting rod 13 and the piston 14 are installed in the valve body 10, the motor 11 is fixed on the valve body 10, the cam 12 is connected to the output shaft of the motor 11, a connecting rod shaft 22 is fixedly connected to the cam 12, one end of the connecting rod 13 is connected to the connecting rod shaft 22, and the other end is connected to the piston 14. A through hole 15 is provided at the top of the valve body 10, the through hole 15 is communicated with the drain valve outlet 4, and the drain pipe 9 is connected to the side wall of the valve body 10 below and close to the through hole 15. The piston 14 is a hollow cylindrical structure with a closed top and an open bottom, and is made of rubber material. The side wall of the piston 14 is a corrugated structure, and a metal reinforcing ring 17 is fixedly installed at the crest of each corrugation. The connecting rod 13 passes through the hollow piston 14 and is connected to the top of the piston 14. The top of the connecting rod 13 has a top plate that matches the piston 14 to ensure the sealing performance of the piston 14. There is a circle of sealing protrusions 16 extending upward on the upper surface of the top of the piston 14. When the drain valve 5 is in a closed state, the sealing protrusion 16 is tightly attached to the valve body 10 at the through hole 15 to close the through hole 15, that is, to disconnect the passage between the drain valve outlet 4 and the drain pipe 9.

[0031] When drainage is required, the motor 11 is started, and the output shaft of the motor 11 drives the cam 12 to rotate. When the cam 12 rotates, it drives the connecting rod 13 to move linearly downward, and further drives the piston 14 to move linearly downward. The sealing protrusion 16 on the top of the piston 14 leaves the through hole 15 of the valve body 10. At this time, the drain valve outlet 4 is connected with the drain pipe 9 through the through hole 15, and the residual waste water in the third cavity 8 flows out from the drain valve outlet 4, and flows to the drain pipe 9 on one side through the through hole 15 under the action of gravity, and is finally discharged from the drain pipe 9.

[0032] When drainage is finished, the motor 11 is started, and the output shaft of the motor 11 drives the cam 12 to rotate in the opposite direction. When the cam 12 rotates, it drives the connecting rod 13 to move linearly upward, and further drives the piston 14 to move linearly upward. The sealing protrusion 16 on the top of the piston 14 is close to the through hole 15 of the valve body 10. At this time, the drain valve outlet 4 is disconnected from the drain pipe 9, and the drain valve outlet 4 is closed.

[0033] In order to facilitate installation and maintenance, the drain valve 5 is fixedly connected to the bottom of the water tank 1 in a detachable manner. In this embodiment, it is preferred that the side wall of the water tank 1 and the valve body 10 of the drain valve 5 are detachably fixedly connected through an embedded buckle structure. Specifically, there is an annular sealing groove 26 at the top edge of the valve body 10, and the side wall outside the sealing groove 26 is higher than the side wall inside. A circle of sealing ring 19 is arranged in the sealing groove 26. The bottom of the water tank 1 is inserted into the sealing groove 26 and the sealing ring 19 is pressed to ensure the sealing performance of the connection. A plurality of mounting grooves (not shown in the figure) are arranged on the inner surface of the side wall on the outer side of the sealing groove 26. The mounting groove is L-shaped, the vertical section is open at the top, and the horizontal section has an inclined surface for clamping. Corresponding to the mounting groove, a plurality of mounting bosses 18 are arranged on the outer surface of the bottom of the side wall of the water tank 1. The mounting bosses 18 have inclined surfaces for clamping. The mounting bosses 18 are inserted into the vertical section of the mounting groove from above, and rotate to one side at a certain angle when reaching the bottom of the vertical section. At this time, the mounting bosses 18 are clamped into the horizontal section of the mounting groove, and are clamped and fixed by matching inclined surface structures.

[0034] The bottom of the valve body 10 of the drain valve 5 is also fixedly connected to the housing 23 of the motor 11 by a snap-fit ​​structure to facilitate installation and maintenance. A mounting seat 24 extends from the same side of the housing 23 of the motor 11, and the bottom of the valve body 10 is snap-fitted and fixed to the mounting seat 24. The snap-fit ​​structure between the valve body 10 and the mounting seat 24 is the same as the snap-fit ​​structure between the valve body 10 and the water tank 1 described above. The mounting seat 24 has an opening, and the connecting rod 13 passes through the opening of the mounting seat 24 and extends into the piston 14. The mounting seat 24 has an annular sealing groove 25, and when the bottom of the valve body 10 is inserted into the sealing groove 25, the bottom edge of the piston 14 is pressed between the valve body 10 and the sealing groove 25 to achieve a fixed connection seal. A plurality of mounting grooves (not shown in the figure) are arranged on the inner surface of the side wall on the outer side of the mounting seat 24. The mounting groove is L-shaped, with the vertical section opening at the top and the horizontal section having an inclined surface for clamping. Corresponding to the mounting grooves, a plurality of mounting bosses (not shown in the figure) are arranged on the outer surface of the bottom of the side wall of the valve body 10. The mounting bosses have inclined surfaces for clamping. The mounting bosses on the valve body 10 are inserted from above into the vertical section of the mounting groove of the mounting seat 24, and rotated to one side by a certain angle when reaching the bottom of the vertical section. At this time, the mounting bosses are clamped into the horizontal section of the mounting groove, and clamping and fixing are achieved through the matching inclined surface structure.

[0035] The drainage method of the dishwasher sink drainage structure comprises the following steps:

[0036] First, the drain valve 5 is closed, and the drain pump is controlled to start, and the water and residue in the water tank 1 are discharged from the drain channel 21 under the action of the drain pump, and the drain pump is closed after the drainage is completed. In this process, due to the suction of the drain pump, most of the water and residue are discharged, and a small amount of waste water and residue flows into the third cavity 8 below.

[0037] After the drain pump is turned off, the drain valve 5 is controlled to open, and the drain valve outlet 4 is connected to the drain pipe 9. The residual waste water and residue that have not been discharged in the third cavity 8 flow out from the drain valve outlet 4 at the bottom of the third cavity 8 under the action of gravity and are discharged through the drain pipe 9. After all the waste water and residue are drained, the drain valve 5 is controlled to close, and the passage between the drain valve outlet 4 and the drain pipe 9 is disconnected.

[0038] The present invention simultaneously arranges a drainage pump outlet 3 and a drainage valve outlet 4 on the water tank 1, and the drainage valve outlet 4 is arranged at the bottom of the water tank 1, most of the water and residue are discharged from the drainage pump outlet 3, and the remaining waste water and residue in the water tank 1 are discharged from the drainage valve outlet 4 at the bottom of the water tank 1 due to gravity, which not only improves the water discharge efficiency and reduces the noise index of the whole machine, but also ensures that there is no residual water left in the water tank 1 after drainage, and completely solves the problem of residual water.

[0039] The present invention also provides a dishwasher, including a body, an inner tank forming a washing chamber installed in the body, a tableware input port at the front of the body, a door body is arranged at the tableware input port, a tableware rack and a spray arm and other components are arranged in the inner tank, a water tank 1 is arranged at the bottom of the inner tank, and the drainage structure as described above is arranged on the water tank 1.

[0040] As described above, similar technical solutions can be derived from the scheme contents given in the accompanying drawings. However, any simple modification, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the contents of the technical scheme of the present invention still fall within the scope of the technical scheme of the present invention.

Claims

1. A dishwasher sink drainage structure, comprising a sink, characterized in that: The water tank is connected with a motor outlet, a drain pump outlet and a drain valve outlet. The drain pump outlet is arranged on the side wall of the water tank and connected to the drain pump. The drain valve outlet is arranged at the bottom of the water tank and is controlled by the drain valve. The drain valve outlet is connected to the drain pipe. Most of the water and residue are discharged from the drain pump outlet. The wastewater residue remaining in the water tank is discharged from the drain valve outlet at the bottom of the water tank due to gravity. The water tank includes a first cavity at the top, a second cavity in the middle and a third cavity at the bottom. The motor water outlet is arranged on the side wall of the first cavity, the drain pump water outlet is arranged on the side wall of the second cavity and at the bottom edge of the side of the second cavity, an opening is arranged on the bottom wall of the second cavity, and the annular platform around the opening is inclined. The drain valve water outlet is arranged on the bottom wall of the third cavity. The second cavity is formed by the bottom wall of the first cavity being recessed downward, and the third cavity is formed by the opening on the bottom wall of the second cavity extending downward.

2. The dishwasher sink drainage structure according to claim 1, characterized in that: The drain valve is installed below the water outlet of the drain valve in a vertical direction.

3. The dishwasher sink drainage structure according to claim 2, characterized in that: The drain pipe is arranged obliquely downward.

4. The dishwasher sink drainage structure according to claim 3, characterized in that: The angle between the central axis of the drainage pipe and the vertical line is equal to or less than 45°.

5. The dishwasher sink drainage structure according to claim 2, characterized in that: The drain valve includes a valve body, a motor, a cam and a valve core. The valve core is installed in the valve body. The motor is fixed on the valve body. The cam is connected to the output shaft of the motor. The valve core is composed of a connecting rod and a piston. One end of the connecting rod is connected to the cam, and the other end is connected to the piston. The connection or disconnection of the drain valve outlet and the drain pipe is achieved through the linear reciprocating motion of the piston.

6. The dishwasher sink drainage structure according to claim 5, characterized in that: The top of the piston is provided with a circle of sealing protrusions protruding upwards for sealing a through hole at the top of the valve body, and the through hole is communicated with the water outlet of the drain valve.

7. The dishwasher sink drainage structure according to claim 1, characterized in that: The drain valve is fixedly connected to the water tank in a detachable manner.

8. A method for draining a dishwasher tank using the drainage structure according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: firstly, closing the drain valve, controlling the start of the drain pump, and discharging the water and residue in the sink from the drainage channel of the drain pump; after the drainage is completed, closing the drain pump, opening the drain valve, and discharging the remaining waste water from the drain valve outlet at the bottom of the sink.

9. A dishwasher, characterized in that: A water tank drainage structure as described in any one of claims 1 to 7 is installed.

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