Dishwasher

Abstract

The present disclosure provides a dishwasher, which relates to the technical field of kitchen appliances, and is used for reducing residual water in the dishwasher and improving the use experience of the dishwasher. The dishwasher comprises a washing assembly, a drainage pump, a first drainage pipe and a second drainage pipe. In the direction from the water inlet end of the second drainage pipe to the water outlet end, the dishwasher further comprises a first check valve, a drainage assembly and a second check valve arranged on the second drainage pipe. The drainage assembly comprises a connector and a piston. The connector has a piston cavity in communication with the second drainage pipe; the piston is arranged in the piston cavity and can move in the piston cavity; and the piston and the connector form an adjustable volume part in communication with the second drainage pipe. In the process of movement of the piston in a first direction, the volume of the adjustable volume part changes from small to large; in the process of movement of the piston in a second direction, the volume of the adjustable volume part changes from large to small. The first direction and the second direction are two opposite directions. The dishwasher is used for washing.

Description

Technical Field

[0001] This disclosure relates to the field of kitchen appliance technology, and more particularly to a dishwasher. Background Technology

[0002] Dishwashers are widely used in daily life as a kitchen appliance, and they can replace manual labor in cleaning dishes and other items.

[0003] After the dishwasher finishes washing, the washing water needs to be drained to the outside through the drain pump and drain pipe.

[0004] However, due to the structural limitations of the drain pump and drain pipe, some washing water will remain inside the dishwasher, creating a humid environment that can easily produce odors and affect the user experience. Summary of the Invention

[0005] The purpose of this disclosure is to provide a dishwasher that reduces residual water inside the dishwasher and improves the user experience.

[0006] To achieve the above objectives, the embodiments of this disclosure provide the following technical solutions:

[0007] On one hand, this disclosure provides a dishwasher. The dishwasher includes a washing assembly, a drain pump, a first drain pipe, and a second drain pipe. The washing assembly includes a liquid collection device disposed at the bottom of the washing assembly. The drain pump is disposed on the liquid collection device. The inlet end of the first drain pipe is connected to the liquid collection device via the drain pump, and the outlet end of the first drain pipe is connected to the outside. The inlet end of the second drain pipe is connected to the bottom of the liquid collection device, and the outlet end of the second drain pipe is connected to the outside. The dishwasher further includes a first check valve, a drain assembly, and a second check valve disposed on the second drain pipe, along the direction from the inlet end to the outlet end of the second drain pipe. The conduction direction of the first check valve is from the inlet end to the outlet end of the second drain pipe. The drain assembly includes a connector and a piston. The connector has a piston chamber communicating with the second drain pipe; the piston is disposed within the piston chamber and can move within the piston chamber; the piston and the connector form an adjustable volume portion communicating with the second drain pipe. The second check valve is oriented from the inlet end of the second drain pipe to the outlet end. During the piston's movement in the first direction, the volume of the adjustable volume section increases; during the piston's movement in the second direction, the volume of the adjustable volume section decreases. The first and second directions are opposite directions.

[0008] The dishwasher provided in this embodiment, by providing a second drain pipe connected to the bottom of the liquid collection component, allows residual water in the liquid collection component to flow into the second drain pipe due to gravity. By providing a first check valve and a second check valve, backflow of external liquid into the washing assembly through the second drain pipe can be prevented. The dishwasher also includes a drain assembly comprising a connector and a piston, the piston and connector forming an adjustable volume section connected to the second drain pipe. During piston movement in a first direction, the volume of the adjustable volume section increases, reducing the pressure in the portion of the second drain pipe located between the first and second check valves. This pressure causes the first check valve to open and the second check valve to close, drawing residual water into the adjustable volume section and simultaneously moving residual water in the liquid collection component towards the drain assembly through the first check valve. During piston movement in a second direction, the volume of the adjustable volume section decreases, increasing the pressure in the portion of the second drain pipe located between the first and second check valves. The aforementioned pressure closes the first check valve and opens the second check valve, causing the residual water located between the first and second check valves to move towards the outlet of the second drain pipe through the second check valve and ultimately be discharged to the outside. The reciprocating motion of the piston continuously discharges residual water from the collection unit and the second drain pipe to the outside of the dishwasher, thereby reducing residual water inside the dishwasher and improving the user experience.

[0009] In some embodiments, the dishwasher further includes a drive unit connected to the piston for driving the piston to move within the piston chamber.

[0010] In some embodiments, the connector includes a connecting pipe and a pump body. The connecting pipe communicates with the second drain pipe. The pump body communicates with the connecting pipe, and the piston chamber is disposed on the pump body; the pump body and the piston form the adjustable volume portion. The pump body and the connecting pipe are an integral structure.

[0011] In some embodiments, the connecting pipe has an inlet and an outlet, the inlet being connected to the inlet end of the second drain pipe, and the outlet being connected to the outlet end of the second drain pipe. The pump body is positioned opposite the outlet.

[0012] In some embodiments, the second check valve is fitted inside the outlet of the connecting pipe.

[0013] In some embodiments, the second drain pipe includes a first pipe, a second pipe, and a third pipe. The first pipe is connected to the bottom of the liquid collecting device and the first check valve. The second pipe is connected to the first check valve and the inlet of the connecting pipe. The first end of the third pipe is sleeved inside the outlet of the connecting pipe and located on the side of the second check valve away from the second pipe, and the second end of the third pipe forms the outlet of the second drain pipe. The dishwasher also includes a first sealing ring, which is disposed between the first end of the third pipe and the inner wall of the outlet of the connecting pipe.

[0014] In some embodiments, the dishwasher further includes a check valve body, which is connected to the first pipe and the second pipe respectively, and the first check valve is sleeved in the check valve body.

[0015] In some embodiments, the first end of the second pipe is fitted into the check valve body. The dishwasher also includes a second sealing ring disposed between the first end of the second pipe and the inner wall of the check valve body.

[0016] In some embodiments, the dishwasher further includes a filter device disposed on the liquid collection unit, the filter device being used to filter liquid flowing into the liquid collection unit. The drain pump and the first drain pipe form a first drain channel of the dishwasher, the minimum dimension of the cross-section of the first drain channel being greater than the filtration accuracy of the filter device. The second drain pipe, the first check valve, the drain assembly, and the second check valve form a second drain channel of the dishwasher, the minimum dimension of the cross-section of the second drain channel being greater than the filtration accuracy of the filter device.

[0017] On the other hand, this disclosure provides another dishwasher. The dishwasher includes a washing assembly, a drain pump, a first drain pipe, and a second drain pipe. The washing assembly includes a liquid collection device disposed at the bottom of the washing assembly. The drain pump is disposed on the liquid collection device. The inlet end of the first drain pipe is connected to the liquid collection device via the drain pump, and the outlet end of the first drain pipe is connected to the outside. The inlet end of the second drain pipe is connected to the bottom of the liquid collection device, and the outlet end of the second drain pipe is connected to the outside. The dishwasher further includes a first check valve, a drain assembly, and a second check valve disposed on the second drain pipe, along the direction from the inlet end to the outlet end of the second drain pipe. The first check valve is open in the direction from the inlet end to the outlet end of the second drain pipe. The drain assembly includes a connector and a piston. The connector has a piston chamber communicating with the second drain pipe; the piston is disposed within the piston chamber, and the piston and the connector form an adjustable volume portion communicating with the second drain pipe. The second check valve is open in the direction from the inlet end to the outlet end of the second drain pipe. The piston can reciprocate within the piston chamber, causing the volume of the adjustable volume section to change cyclically. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual process of the method, etc. involved in the embodiments of this disclosure.

[0019] Figure 1 This is a structural diagram of a dishwasher provided according to some embodiments of the present disclosure;

[0020] Figure 2 This is a structural diagram of another dishwasher provided according to some embodiments of the present disclosure;

[0021] Figure 3 This is a structural diagram of a liquid collecting device and a drainage pump provided according to some embodiments of the present disclosure;

[0022] Figure 4 This is a partial structural diagram of a dishwasher provided according to some embodiments of the present disclosure;

[0023] Figure 5 This is a structural diagram of a liquid collection device provided according to some embodiments of the present disclosure;

[0024] Figure 6 This is a partial structural diagram of another dishwasher provided according to some embodiments of the present disclosure;

[0025] Figure 7 This is a partial structural diagram of yet another dishwasher provided according to some embodiments of the present disclosure;

[0026] Figure 8 This is a partial structural diagram of yet another dishwasher provided according to some embodiments of the present disclosure;

[0027] Figure 9 This is a structural diagram of a connector provided according to some embodiments of the present disclosure;

[0028] Figure 10 This is a cross-sectional view of a connector provided according to some embodiments of the present disclosure;

[0029] Figure 11 This is a structural diagram of another connector provided according to some embodiments of the present disclosure;

[0030] Figure 12 This is a partial structural diagram of yet another dishwasher provided according to some embodiments of the present disclosure;

[0031] Figure 13 This is a structural diagram of a second check valve provided according to some embodiments of the present disclosure;

[0032] Figure 14 for Figure 7 A magnified view of a portion of region Q1;

[0033] Figure 15 for Figure 7 A magnified view of a portion of region Q2;

[0034] Figure 16 This is a structural diagram of yet another dishwasher provided according to some embodiments of the present disclosure;

[0035] Figure 17 This is a structural diagram of a respirator provided according to some embodiments of the present disclosure. Detailed Implementation

[0036] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0037] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with this embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0038] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0039] "At least one of A, B and C" has the same meaning as "at least one of A, B or C", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations of A, B and C.

[0040] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0041] As used herein, “parallel,” “perpendicular,” and “equal” include the described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where an acceptable range of deviation for approximate parallelism may be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where an acceptable range of deviation for approximate perpendicularity may also be, for example, within 5°; “equal” includes absolute equality and approximate equality, where an acceptable range of deviation for approximate equality may be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0042] This document describes exemplary embodiments with reference to sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the areas are enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as limited to the shapes of the areas shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched areas shown as rectangular would typically have curved features. Therefore, the areas shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of areas of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0043] like Figure 1 As shown, this embodiment of the present disclosure provides a dishwasher 100, which includes a washing assembly 1, a drain pump 2, and a first drain pipe 3.

[0044] For example, such as Figure 1 As shown, the washing assembly 1 may include a circulation pump 11, a water inlet pipe 12, a spray arm 13, and a shelf 14. The circulation pump 11 is connected to the water inlet pipe 12, and the water inlet pipe 12 is connected to the spray arm 13. The spray arm 13 is provided with a plurality of spray holes connected to the water inlet pipe 12.

[0045] like Figure 1 As shown, when the dishwasher 100 needs to perform a washing operation, the dishes to be washed are placed on the rack 14, and washing water is introduced into the dishwasher 100. The washing water enters the circulation pump 11 through a connecting pipe connected to the circulation pump 11. The circulation pump 11 starts, thereby delivering the washing water to the water inlet pipe 12, and finally to the spray arm 13 along the water inlet pipe 12. The washing water is sprayed out from the spray holes on the spray arm 13 to wash the dishes placed on the rack 14. Afterwards, the washing water continues to flow back to the circulation pump 11, forming a circulating washing process.

[0046] For example, the number of spray arms 13 can be one or more. Figure 1 Taking three spray arms 13 as an example, the spray arms 13 include the top spray arm 13A, the middle spray arm 13B, and the bottom spray arm 13C.

[0047] Understandably, the more spray arms 13 there are, the more spray holes on the spray arms 13 will be, and more water will be used to clean the dishes placed on the shelf 14, which will help improve the washing ability and washing efficiency of the dishwasher 100.

[0048] For example, the number of shelves 14 can be one or more. Figure 1 Taking two shelves 14 as an example, the shelves 14 include the top shelf 14A and the bottom shelf 14B. Figure 2 Taking a shelf of 14 as an example.

[0049] For example, the upper shelf 14A is disposed between the top spray arm 13A and the middle spray arm 13B, and the lower shelf 14B is disposed between the middle spray arm 13B and the bottom spray arm 13C.

[0050] Understandably, the more shelves 14 there are, the more dishes can be placed, thus increasing the number of dishes that the dishwasher 100 can wash in a single cycle. Furthermore, by placing the shelves between two shelves 14, the washing water sprayed from the spray nozzles of the two spray arms 13 can simultaneously wash the dishes on the shelves 14, thereby improving the washing capacity of the dishes on the shelves 14.

[0051] In some examples, such as Figure 1 As shown, the washing assembly 1 also includes a body 15 and a liquid collection component 16 disposed at the bottom of the washing assembly 1.

[0052] For example, the liquid collection component 16 is connected to the body 15.

[0053] For example, the body 15 is the inner tub of the dishwasher 100, which forms a washing space to accommodate the spray arm 13, the shelf 14, and tableware, etc.

[0054] For example, the liquid collection unit 16 is detachably connected to the body 15.

[0055] For example, the liquid collection component 16 is connected to the body 15 by threads, and a rubber ring is provided between the liquid collection component 16 and the body 15 for sealing. This makes it easy to disassemble the liquid collection component 16 and prevents water leakage at the connection between the liquid collection component 16 and the body 15.

[0056] For example, such as Figure 1 As shown, the liquid collection unit 16 is used to collect the washing water sprayed from the spray holes of the spray arm 13.

[0057] For example, such as Figure 1 and Figure 2 As shown, the inlet of the circulating pump 11 is connected to the liquid collection unit 16 so that the washing water collected by the liquid collection unit 16 and sprayed from the spray hole of the spray arm 13 can enter the circulating pump 11 to form a circulating washing process.

[0058] In some examples, such as Figure 1 and Figure 2 As shown, the drain pump 2 is installed on the liquid collection component 16. The inlet end of the first drain pipe 3 is connected to the liquid collection component 16 through the drain pump 2, and the outlet end of the first drain pipe 3 is connected to the outside.

[0059] For example, such as Figure 3 As shown, the drain pump 2 is located at or near the lowest point of the liquid collection component 16, which facilitates the discharge of washing water from the liquid collection component 16 to the outside.

[0060] For example, the type of drainage pump 2 can be a centrifugal pump or an axial flow pump, etc.

[0061] See Figure 4 After the washing unit 1 of the dishwasher 100 has finished its operation, the washing water inside the dishwasher 100 needs to be drained. The drain pump 2 is used to guide the washing water in the collection unit 16 to the first drain pipe 3 and discharge it. The water flow direction in the drain pump 2 and the first drain pipe 3 can be referenced... Figure 4 The dotted line in the middle.

[0062] For example, such as Figure 1 and Figure 2 As shown, a backflow preventer 31 is provided on the first drain pipe 3 to prevent the washing water in the first drain pipe 3 from flowing back into the liquid collection component 16.

[0063] For example, check valve 31 can be a check valve.

[0064] In related technologies, due to limitations in the type and location of the drain pump, some residual water in the collection unit 16 cannot be drained, resulting in a humid environment and odor inside the dishwasher, which affects the user experience.

[0065] Based on this, in some embodiments of this disclosure, such as Figure 1 and Figure 2 As shown, the dishwasher 100 also includes a second drain pipe 4, the inlet end of which is connected to the bottom of the liquid collection member 16, and the outlet end of which is connected to the outside. Combined with... Figure 4 Along the direction from the inlet end of the second drain pipe 4 to the outlet end, the dishwasher 100 also includes a first check valve 5, a drain assembly 6, and a second check valve 7 disposed on the second drain pipe 4.

[0066] For example, such as Figure 5As shown, a drain port 16A is provided at the bottom of the liquid collecting component 16. The drain port 16A is connected to the inside of the liquid collecting component 16, and the water inlet end of the second drain pipe 4 is connected to the drain port 16A.

[0067] The residual water in the collection device 16 will collect at the drain outlet 16A due to gravity and eventually flow into the second drain pipe 4.

[0068] In some examples, the first check valve 5 is oriented from the inlet end of the second drain pipe 4 to the outlet end. The second check valve 7 is oriented from the inlet end of the second drain pipe 4 to the outlet end.

[0069] That is, the first check valve 5 and the second check valve 7 have the same conduction direction.

[0070] By setting the first check valve 5 and the second check valve 7, external liquid can be prevented from flowing from the outlet end of the second drain pipe 4 to the inlet end and eventually into the washing assembly 1.

[0071] In some examples, combined Figure 6 , Figure 7 and Figure 8 The pumping assembly 6 includes a connector 61 and a piston 62. (Combined) Figure 9 and Figure 10 The connector 61 has a piston chamber 61A that communicates with the second drain pipe 4. For example... Figure 8 As shown, piston 62 is disposed within piston chamber 61A, and piston 62 can move within piston chamber 61A. Piston 62 and connector 61 form an adjustable volume section 6A that communicates with the second drain pipe 4.

[0072] For example, such as Figure 8 As shown, piston 62 also includes piston head 621 and piston rod 622, which are fixedly connected.

[0073] The piston head 621 is in close contact with the outer wall of the piston chamber 61A, and the piston rod 622 is used to drive the piston head 621 to move within the connector 61.

[0074] Understandable, such as Figure 8 As shown, the piston 62 moves within the connector 61, causing the volume of the adjustable volume section 6A to change.

[0075] In some examples, such as Figure 8 As shown, during the movement of piston 62 along the first direction X, the volume of adjustable volume section 6A increases from small to large; during the movement of piston 62 along the second direction Y, the volume of adjustable volume section 6A decreases from large to small. The first direction X and the second direction Y are two opposite directions.

[0076] Combination Figure 6 , Figure 7 and Figure 8 As the piston 62 moves along the first direction X, the volume of the adjustable volume section 6A increases, which reduces the pressure in the portion of the second drain pipe 4 located between the first check valve 5 and the second check valve 7. At this time, due to the unidirectional conduction of the first check valve 5 and the second check valve 7, the pressure causes the first check valve 5 to open and the second check valve 7 to close. The residual water in the second drain pipe 4 is then drawn into the adjustable volume section 6A, and simultaneously, the residual water in the collection member 16 moves through the first check valve 5 towards the pumping and draining assembly 6.

[0077] As piston 62 moves along the second direction Y, the volume of adjustable volume section 6A decreases, increasing the pressure in the portion of the second drain pipe 4 located between the first check valve 5 and the second check valve 7. At this time, due to the unidirectional conduction of the first check valve 5 and the second check valve 7, the pressure causes the first check valve 5 to close and the second check valve 7 to open. This causes the residual water located between the first check valve 5 and the second check valve 7 to move through the second check valve 7 towards the outlet end of the second drain pipe 4 and ultimately be discharged to the outside.

[0078] When the piston 62 can reciprocate within the connector 61 along the first direction X and the second direction Y, it can continuously discharge the residual water in the liquid collection member 16 and the second drain pipe 4 to the outside of the dishwasher 100, thereby reducing the residual water in the dishwasher 100.

[0079] Therefore, the dishwasher 100 provided in this embodiment of the present disclosure, by providing a second drain pipe 4 connected to the bottom of the liquid collection member 16, allows residual water in the liquid collection member 16 to flow into the second drain pipe 4 due to gravity. By providing a first check valve 5 and a second check valve 7, external liquid can be prevented from flowing back into the washing assembly 1 through the second drain pipe 4. Furthermore, the dishwasher 100 also includes a drain assembly 6 comprising a connector 61 and a piston 62. The piston 62 and the connector 61 form an adjustable volume portion 6A connected to the second drain pipe 4. During the movement of the piston 62 along the first direction X, the volume of the adjustable volume portion 6A increases, which reduces the pressure in the portion of the second drain pipe 4 located between the first check valve 5 and the second check valve 7. This pressure causes the first check valve 5 to open and the second check valve 7 to close, allowing residual water in the second drain pipe 4 to be drawn into the adjustable volume portion 6A. Simultaneously, it drives residual water in the liquid collection member 16 to move towards the drain assembly 6 through the first check valve 5. As the piston 62 moves along the second direction Y, the volume of the adjustable volume section 6A decreases, increasing the pressure in the portion of the second drain pipe 4 located between the first check valve 5 and the second check valve 7. This pressure causes the first check valve 5 to close and the second check valve 7 to open, allowing residual water located between the first and second check valves 5 and 7 to move towards the outlet of the second drain pipe 4 through the second check valve 7 and ultimately be discharged to the outside. Through the reciprocating motion of the piston 62, residual water in the collecting element 16 and the second drain pipe 4 can be continuously discharged to the outside of the dishwasher 100, thereby reducing residual water inside the dishwasher 100 and improving the user experience.

[0080] In some examples, the collection unit 16 is also provided with a water inlet valve for introducing clean washing water into the dishwasher 100.

[0081] In some examples, the liquid collection unit 16 is also provided with a heating element, which is used to heat the washing water. The heated washing water can improve the washing ability of the dishes to be washed and improve the washing efficiency.

[0082] In some examples, the liquid collection unit 16 is also provided with a pressure sensor and an air chamber for connecting the pressure sensor. The pressure sensor can detect the pressure of the washing water, so as to determine the height of the washing water level in the dishwasher 100 based on the pressure of the washing water.

[0083] In some examples, the dishwasher 100 also includes a processor for determining the state of the dishwasher 100 based on the aforementioned sensors and sending control signals to various components (such as the circulation pump 11).

[0084] In some embodiments, such as Figure 6 and Figure 7As shown, the dishwasher 100 also includes a drive unit 8, which is connected to the piston 62 and is used to drive the piston 62 to move within the piston chamber 61A.

[0085] For example, the drive unit 8 can directly drive the piston 62 to move.

[0086] For example, the drive unit 8 can be a linear motor.

[0087] Alternatively, the drive element 8 can drive the piston 62 to move through the transmission component.

[0088] For example, the drive component 8 can be a regular motor that drives the piston 62 to move via a crankshaft.

[0089] The above settings can improve the efficiency of draining residual water from the collection unit 16 and the second drain pipe 4 to the outside of the dishwasher 100.

[0090] In some embodiments, such as Figure 9 and Figure 10 As shown, connector 61 includes a connecting pipe 611 and a pump body 612. (The last sentence appears to be incomplete and possibly refers to a different part of the connector.) Figure 7 and Figure 8 The connecting pipe 611 is connected to the second drain pipe 4. The pump body 612 is connected to the connecting pipe 611, and the piston chamber 61A is disposed on the pump body 612; the pump body 612 and the piston 62 form an adjustable volume section 6A. The connecting pipe 611 and the pump body 612 are an integral structure.

[0091] For example, the structure of connector 61 can be the same as that of a tee.

[0092] The above-mentioned arrangement can make the fixation between the pump body 612 and the connecting pipe 611 more secure, and can help reduce the number of parts forming the dishwasher 100, thus simplifying the assembly difficulty of the dishwasher 100.

[0093] In some embodiments, such as Figure 10 As shown, the connecting pipe 611 has an inlet 611A and an outlet 611B. The inlet 611A is connected to the inlet end of the second drain pipe 4, and the outlet 611B is connected to the outlet end of the second drain pipe 4. Figure 11 As shown, the pump body 612 is positioned opposite to the outlet 611B.

[0094] Understandably, residual water in the collection unit 16 flows through the connector 61 in the direction from the inlet 611A to the outlet 611B.

[0095] Combination Figure 8 With the above configuration, during the movement of piston 62 along the second direction Y, the residual water in the adjustable volume section 6A can flow directly to the outlet 611B. Figure 11The dashed lines in the image reduce the resistance of residual water in the adjustable volume section 6A to the outlet 611B, which helps to reduce the driving force of the drive component 8. Therefore, a lower power drive component 8 can be used, which in turn reduces the manufacturing cost of the dishwasher 100.

[0096] In some embodiments, combined with Figure 7 and Figure 12 The second check valve 7 is installed inside the outlet 611B of the connecting pipe 611.

[0097] With the above setup, the second check valve 7 can be fixed by the connecting pipe 611, which avoids the need for additional fixing components and helps reduce the number of parts in the dishwasher 100.

[0098] For example, such as Figure 13 As shown, the second check valve 7 includes a check valve support 71 and a check valve plate 72. The check valve support 71 is tubular, and the check valve plate 72 is connected to the check valve support 71 through an elastic component (e.g., an elastic sheet). The check valve plate 72 can be opened in one direction.

[0099] When the pressure at both ends of the check valve plate 72 is the same, the check valve plate 72 is engaged with the check valve bracket 71, and the second check valve 7 is in the closed state. When the pressure at both ends of the check valve plate 72 decreases along the conduction direction of the second check valve 7, a pressure difference is generated on both sides of the check valve plate 72, which can cause the check valve plate 72 to open in one direction, and the second check valve 7 is in the conducting state. When the pressure at both ends of the check valve plate 72 increases along the conduction direction of the second check valve 7, a pressure difference is generated on both sides of the check valve plate 72, but because of the one-way opening action of the check valve plate 72, the check valve plate 72 is still engaged with the check valve bracket 71, and the second check valve 7 is in the closed state.

[0100] In some examples, the inner diameter of the outlet 611B of the connecting pipe 611 is larger than the inner diameter of the rest of the connecting pipe 611.

[0101] It is understandable that the sidewall of the check valve bracket 71 has a certain thickness, which causes the inner diameter of the check valve bracket 71 to be smaller than the outer diameter of the check valve bracket 71.

[0102] By making the inner diameter of the outlet 611B of the connecting pipe 611 larger than the inner diameter of the rest of the connecting pipe 611, a larger second check valve 7 can be installed. Correspondingly, the inner diameter of the check valve bracket 71 can be increased, and the resistance of the second check valve 7 to the flowing residual water can be reduced.

[0103] In some embodiments, such as Figure 6 and Figure 7As shown, the second drain pipe 4 includes a first pipe 41, a second pipe 42, and a third pipe 43. The first pipe 41 is connected to the bottom of the liquid collecting device 16 and the first check valve 5. The second pipe 42 is connected to the first check valve 5 and the inlet 611A of the connecting pipe 611. Figure 14 The first end of the third pipe 43 is fitted inside the outlet 611B of the connecting pipe 611 and is located on the side of the second check valve 7 away from the second pipe 42. The second end of the third pipe 43 forms the outlet of the second drain pipe 4. The dishwasher 100 also includes a first sealing ring 9, which is disposed between the first end of the third pipe 43 and the inner wall of the outlet 611B of the connecting pipe 611.

[0104] For example, the number of first sealing rings 9 can be one or more.

[0105] The above settings allow for more flexible installation of the second drain pipe 4, and the first sealing ring 9 ensures a tighter connection between the outlet 611B of the connecting pipe 611 and the third pipe 43, preventing leakage of residual water.

[0106] In some embodiments, combined with Figure 6 and Figure 7 The dishwasher 100 also includes a check valve body 10, which is connected to the first pipe 41 and the second pipe 42 respectively, and the first check valve 5 is sleeved inside the check valve body 10.

[0107] For example, the structure of the first check valve 5 is the same as that of the second check valve 7. The check valve bracket of the first check valve 5 is sleeved inside the check valve body 10.

[0108] For example, the first pipe 41 and the second pipe 42 are flexible pipes. With the above configuration, the position of the first check valve 5 can be fixed by the check valve body 10.

[0109] In some embodiments, combined with Figure 7 and Figure 15 The first end of the second pipe 42 is fitted inside the check valve body 10. The dishwasher 100 also includes a second sealing ring 20, which is disposed between the first end of the second pipe 42 and the inner wall of the check valve body 10.

[0110] For example, the number of second sealing rings 20 can be one or more.

[0111] The above settings can make the connection between the check valve body 10 and the second pipe 42 tighter, preventing leakage of residual water.

[0112] In some embodiments, such as Figure 2As shown, the dishwasher 100 also includes a filter device 30 disposed on the liquid collection unit, which is used to filter the liquid flowing into the liquid collection unit 16. Figure 6 and Figure 7 As shown, the drain pump 2 and the first drain pipe 3 form the first drain channel of the dishwasher 100, and the minimum cross-sectional dimension of the first drain channel is greater than the filtration accuracy of the filter device 30. The second drain pipe 4, the first check valve 5, the drain assembly 6, and the second check valve 7 form the second drain channel of the dishwasher 100, and the minimum cross-sectional dimension of the second drain channel is greater than the filtration accuracy of the filter device 30.

[0113] For example, the filter device 30 can be a filter screen or the like.

[0114] By setting up the filter device 30, larger residues can be prevented from flowing into the liquid collection unit 16, thereby preventing the larger residues from clogging the pipes of the dishwasher 100.

[0115] The filtration accuracy of the filter device 30 is the maximum size of particles that can pass through the filter device 30.

[0116] For example, the smaller the filtration precision of the filter device 30, the more residue can be filtered out; the larger the filtration precision of the filter device 30, the more residue can pass through the filter device 30.

[0117] The minimum dimension of the cross-section of the first drainage channel is the minimum value of the cross-sectional dimension of the drainage pump 2 and the first drainage pipe 3.

[0118] The minimum cross-sectional dimension of the second drainage channel is the minimum cross-sectional dimension among the second drainage pipe 4, the first check valve 5, the pumping and draining assembly 6, and the second check valve 7.

[0119] For example, the filtration accuracy of the filter device 30 is 7mm, the minimum dimension of the cross-section of the first drain channel is greater than 7mm, and the minimum dimension of the cross-section of the second drain channel is greater than 7mm.

[0120] With the above settings, all the washing water filtered by the filter device 30 can pass through the first drain channel and the second drain channel, avoiding clogging of the first drain channel and the second drain channel due to residue in the washing water.

[0121] In some examples, such as Figure 6 , Figure 16 and Figure 17 As shown, the dishwasher 100 also includes a breather 40. The breather 40 has a breather inlet 40A and a breather outlet 40B. The breather outlet 40B is connected to the outside.

[0122] For example, the respirator 40 can serve as an anti-siphon.

[0123] For example, such as Figure 16 As shown, there is one water inlet 40A in the respirator. The water outlet of the first drain pipe 3 is connected to the water inlet 40A in the respirator. The water outlet of the second drain pipe 4 is connected to the first drain pipe 3. The washing water in the second drain pipe 4 is first discharged into the first drain pipe 3 and then discharged to the outside through the respirator 40.

[0124] Understandably, the connection point between the outlet end of the second drain pipe 4 and the first drain pipe 3 can be any position on the first drain pipe 3.

[0125] Or, such as Figure 17 As shown, there are two water inlets 40A in the respirator. The two water inlets 40A are connected to the outlet of the first drain pipe 3 and the outlet of the second drain pipe 4, respectively. The washing water in the first drain pipe 3 and the washing water in the second drain pipe 4 are discharged to the outside through the respirator 40.

[0126] On the other hand, this disclosure also provides a dishwasher 100 in which the piston 62 can reciprocate within the piston chamber to cause the volume of the adjustable volume section 6A to change cyclically.

[0127] For example, the volume of the adjustable volume section 6A is cyclically changed, meaning that the volume of the adjustable volume section 6A increases from small to large, then decreases from large to small, then increases from small to large, and continues to cycle.

[0128] With the above configuration, as the volume of the adjustable volume section 6A changes cyclically, the pressure in the portion of the second drain pipe 4 located between the first check valve 5 and the second check valve 7 will change cyclically. When the pressure in the portion of the second drain pipe 4 located between the first check valve 5 and the second check valve 7 decreases, the pressure causes the first check valve 5 to open and the second check valve 7 to close. Residual water in the second drain pipe 4 is then drawn into the adjustable volume section 6A, simultaneously causing residual water in the collection member 16 to move towards the drain assembly 6 through the first check valve 5. When the pressure in the portion of the second drain pipe 4 located between the first check valve 5 and the second check valve 7 increases, the pressure causes the first check valve 5 to close and the second check valve 7 to open. This causes the residual water located between the first check valve 5 and the second check valve 7 to move towards the outlet of the second drain pipe 4 through the second check valve 7 and ultimately be discharged to the outside. This reduces residual water in the dishwasher 100 and improves the user experience.

[0129] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A dishwasher, characterized in that, include: A washing assembly, including a liquid collection element disposed at the bottom of the washing assembly; A drain pump is installed on the liquid collection unit; The first drain pipe has its inlet end connected to the liquid collection device via the drain pump, and its outlet end connected to the outside. The second drain pipe has its inlet end connected to the bottom of the liquid collecting device and its outlet end connected to the outside. The dishwasher further includes components disposed on the second drain pipe, in the direction from the inlet end to the outlet end of the second drain pipe: The first check valve is in the direction of flow from the inlet end of the second drain pipe to the outlet end. The drainage assembly includes: The connector has a piston chamber communicating with the second drain pipe; A piston is disposed within the piston chamber, and the piston can move within the piston chamber; the piston and the connector form an adjustable volume portion communicating with the second drain pipe; the connector includes a connecting pipe and a pump body, the connecting pipe communicating with the second drain pipe; the pump body communicating with the connecting pipe, and the piston chamber disposed on the pump body; the pump body and the piston form the adjustable volume portion; the pump body and the connecting pipe are an integral structure; the connecting pipe has an inlet and an outlet, the inlet communicating with the inlet end of the second drain pipe, and the outlet communicating with the outlet end of the second drain pipe; wherein, the pump body and the outlet are disposed opposite to each other; The second check valve is directed from the inlet end of the second drain pipe to the outlet end; the second check valve is fitted inside the outlet of the connecting pipe; the inner diameter of the outlet of the connecting pipe is larger than the inner diameter of the rest of the connecting pipe. The second drain pipe includes a first pipe, a second pipe, and a third pipe. The first pipe is connected to the bottom of the liquid collecting device and the first check valve, respectively. The second pipe is connected to the first check valve and the inlet of the connecting pipe, respectively. The first end of the third pipe is sleeved inside the outlet of the connecting pipe and is located on the side of the second check valve away from the second pipe. The second end of the third pipe forms the outlet of the second drain pipe. The dishwasher also includes a first sealing ring, which is disposed between the first end of the third pipe and the inner wall of the outlet of the connecting pipe. During the movement of the piston in the first direction, the volume of the adjustable volume section increases from small to large; during the movement of the piston in the second direction, the volume of the adjustable volume section decreases from large to small. The first direction and the second direction are two opposite directions.

2. The dishwasher according to claim 1, characterized in that, The dishwasher also includes a drive unit connected to the piston for driving the piston to move within the piston chamber.

3. The dishwasher according to claim 1, characterized in that, The dishwasher also includes a check valve body, which is connected to the first pipe and the second pipe respectively, and the first check valve is sleeved in the check valve body.

4. The dishwasher according to claim 3, characterized in that, The first end of the second pipe is fitted into the body of the check valve; The dishwasher also includes a second sealing ring, which is disposed between the first end of the second pipe and the inner wall of the check valve body.

5. The dishwasher according to claim 1 or 2, characterized in that, The dishwasher also includes a filter device disposed on the liquid collection unit, the filter device being used to filter the liquid flowing into the liquid collection unit; The drain pump and the first drain pipe form the first drain channel of the dishwasher, and the minimum dimension of the cross-section of the first drain channel is greater than the filtration accuracy of the filter device. The second drain pipe, the first check valve, the drain assembly, and the second check valve form the second drain channel of the dishwasher, and the minimum dimension of the cross-section of the second drain channel is greater than the filtration accuracy of the filter device.

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