WO2021244541A1

WO2021244541A1 - Dishwasher

Info

Publication number: WO2021244541A1
Application number: PCT/CN2021/097745
Authority: WO
Inventors: 刘日超; 杨琳; 唐丽
Original assignee: 佛山市顺德区美的洗涤电器制造有限公司
Priority date: 2020-06-02
Filing date: 2021-06-01
Publication date: 2021-12-09

Abstract

A dishwasher, comprising an inner tub (8), a water container (3), a first valve (19), a flushing pipeline (1C), a venturi pipe (15), and a drainage pipe (17). The water container (3) is mounted to the inner tub (8); a residual water drainage port is provided at a lower end of the water container (3); the first valve (19) is provided between a water tank (18) and the water container (3); the first valve (19) is configured to connect or disconnect the water tank (18) and the water container (3); a water outlet end of the flushing pipeline (1C) is communicated with the water tank (18), and a water inlet end of the flushing pipeline (1C) is configured to be communicated with a water source; the venturi pipe (15) is provided on the flushing pipeline (1C); the drainage pipe (17) has one end communicated with a negative pressure port of the venturi pipe (15), and the other end communicated with the residual water drainage port.

Description

dishwasher

This application claims the priority of Chinese patent applications filed on June 2, 2020 with application numbers 202020990090.4 and 202020989852.9, the entire contents of which are incorporated into this application by reference.

Technical field

This application relates to the technical field of kitchen appliances, in particular to a dishwasher.

Background technique

Existing dishwashers mainly use water to rinse the tableware, combined with the effects of high temperature and detergent, so as to clean the tableware.

The water flow system of the dishwasher includes a water inlet system, a washing circulation system and a drainage system. The drainage system is mainly composed of water cup, drainage motor pump, drainage pipe and so on. The drain pump pumps the water in the cup by rotating the impeller at high speed.

When the drain pump is started for a period of time, as the water volume in the water cup decreases, when the liquid level in the water cup is lower than the diameter of the water inlet of the drain pipe, it will cause the drain pump to suck air, which will cause this part of the dishwasher. The water cannot be drained completely.

technical problem

The main purpose of this application is to propose a dishwasher, which aims to solve the technical problem that the residual water in the water cup of the dishwasher cannot be drained.

Technical solutions

In order to achieve the above object, the dishwasher proposed in the present application includes an inner tank, and the dishwasher further includes:

A water cup, the water cup is installed in the inner container, and a residual water discharge port is provided at the lower end of the water cup;

The first valve is arranged between the water tank and the water cup, and the first valve is used to conduct or block the water tank and the water cup;

A flushing water pipeline, the water outlet end of the flushing water pipeline is connected to the water tank, and the water inlet end of the flushing water pipeline is used to communicate with a water source;

The venturi tube is arranged on the flushing pipe;

One end of the drainage tube is connected with the negative pressure port of the venturi tube, and the other end is connected with the residual water discharge port.

In an embodiment, the residual water discharge port is provided at the bottom of the water cup.

In an embodiment, the bottom of the cup is inclined toward the residual water discharge port.

In one embodiment, the inclination angle of the bottom of the cup toward the residual water discharge port is 5°-15°.

In one embodiment, the bottom of the cup is provided with a water leakage port, the drainage tube is connected to the water leakage port, an insert is installed at the water leakage port, and a plurality of through holes are opened on the insert. The through hole forms the residual water discharge port.

In an embodiment, the diameter of the through hole ranges from 1 mm to 3 mm.

In an embodiment, a second valve is further provided on the flushing pipeline, and the second valve is located between the venturi tube and the water tank.

In an embodiment, a third valve is provided on the flushing line, and the third valve is located between the water inlet end of the flushing line and the venturi.

In an embodiment, the second valve is a one-way valve, and/or the third valve is a one-way valve.

In an embodiment, the side wall of the water cup is provided with a drain port communicating with a drain pipe, the lower edge of the drain port is flush with the bottom of the water cup, and the residual water discharge port is located at the bottom of the drain port. bottom.

In an embodiment, the dishwasher further includes a water tank, and the water tank is in communication with the water cup.

In an embodiment, the position of the water tank is higher than the water cup.

In one embodiment, the dishwasher further includes a water inlet pipe, a drain pipe, and a respirator, the water inlet pipe is in communication with the inner tank or the water cup, and is used to fill the water cup with water; the drain pipe is connected to the water cup. The water cup is connected to drain the water in the water cup, and the respirator is arranged on the drain pipe.

Beneficial effect

The technical solution of the present application, on the one hand, can remove the residual water in the water cup by installing a venturi on the flushing pipeline; on the other hand, due to the arrangement of the water tank, the water entering the flushing pipeline will flow through the venturi. , Can be stored in the water tank, convenient for next use, will not cause water waste.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on the structure shown in these drawings.

Figure 1 is a schematic structural diagram of an embodiment of a dishwasher according to the present application;

Fig. 2 is a schematic structural diagram of another embodiment of a dishwasher according to the present application;

Figure 3 is a schematic structural diagram of another embodiment of the application;

Figure 4 is a schematic structural diagram of yet another embodiment of the application;

Fig. 5 is a schematic diagram of an embodiment of the assembling relationship between the water cup and the drainage tube in Fig. 3;

6 is a schematic diagram of another embodiment of the assembly relationship between the water cup and the drainage tube in FIG. 3;

7 is a schematic diagram of another embodiment of the assembly relationship between the water cup and the drainage tube in FIG. 3;

FIG. 8 is a schematic diagram of the assembly structure of the insert and the bottom of the water cup in the water cup of FIG. 3.

Attached icon number description:

标号 Label	名称 name	标号 Label	名称 name	标号 Label	名称 name
1 1	进水端 Water inlet	8 8	内胆 Liner	17 17	引流管 Drainage tube
1A 1A	进水管的进水端 The inlet end of the inlet pipe	9 9	上碗篮 Bowling basket	18 18	水箱 Water tank
1B 1B	冲水管的进水端 Inlet end of flush pipe	10 10	下碗篮 Bowl basket	19 19	第一阀门 First valve
2 2	进水管 Inlet pipe	11 11	排水泵 Drain pump	20 20	漏水口 Leak
3 3	水杯 Water cup	12 12	排水管 Drain pipe	21 twenty one	嵌件 Insert
4 4	洗涤泵 Washing pump	13 13	呼吸器 Respirator	30 30	排水口 Drain
5 5	下喷臂 Lower spray arm	14 14	第三阀门 Third valve	31 31	水杯的杯底 The bottom of the water glass
6 6	中喷臂 Middle spray arm	15 15	文丘里管 Venturi tube	32 32	水杯的侧壁 Side wall of the cup
7 7	上喷臂 Upper spray arm	16 16	第二阀门 Second valve	1C 1C	冲水管路 Flush line

The realization, functional characteristics, and advantages of the purpose of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Embodiments of the present invention

It should be noted that if there are descriptions related to "first", "second", etc. in the embodiments of this application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as instructions or Imply its relative importance or implicitly indicate the number of technical features indicated. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and/or" in the full text means including three parallel schemes, taking "A and/or B" as an example, including scheme A, scheme B, or schemes in which both A and B meet.

Please refer to FIG. 1, this application proposes a dishwasher, which includes an inner container 8, a water cup 3, a water tank 18, a first valve 19, a flushing pipe 1C, a venturi 15 and a drainage tube 17.

Wherein, the water cup 3 is installed in the inner container 8, and a residual water discharge port (not shown in the figure) is provided at the lower end of the water cup 3. The water tank 18 is in communication with the water cup 3; the first valve 19 is provided between the water tank 18 and the water cup 3, and the first valve 19 is used to guide the water tank 18 and the water cup 3 Pass or block. The water outlet end of the flush water pipeline 1C is in communication with the water tank 18, and the water inlet end 1B of the flush water pipeline 1C is used to communicate with a water source; the venturi tube 15 is arranged on the flush water pipeline 1C. One end of the drainage tube 17 is in communication with the negative pressure port of the venturi tube 15, and the other end is in communication with the residual water discharge port.

Generally, the dishwasher mainly includes the outer shell, the inner tank 8, the water cup 3, the water inlet pipe 2, the drain pipe 12, the drain pump 11, the washing pump 4, and spray arms (upper spray arm 7, middle spray arm 6 and lower spray arm 5) , The inner tank 8 and the water cup 3 are arranged in the outer shell, the water cup 3 is installed under the inner tank 8, the water inlet pipe 2 is connected to the water inlet of the water cup 3, and the drain pipe 12 is connected to the water outlet 30 of the water cup 3 (see Figure 7) , The drain pump 11 is located on the drain pipe 12, and the spray arm is connected to the water cup 3 through the washing pump 4. When washing, water is injected into the water cup 3 from the water inlet end 1A of the water inlet pipe, and the washing pump 4 sucks the water in the water cup 3 to the spray arm, and sprays water to the tableware through the spray arm to clean the tableware. The number of spray arms Generally, there are multiple spray arms. For example, spray arms include an upper spray arm 7, a middle spray arm 6 and a lower spray arm 5. The upper spray arm 7 mainly washes the tableware in the upper basket 9, and the middle spray arm 6 and the lower spray arm 5 mainly wash the tableware in the lower basket 10. When the cleaning is completed, the drain pipe 12 can drain the water in the water cup 3. The drain pipe 12 can also be provided with a respirator 13, which is used to draw out the hot air in the dishwasher to prevent heat from accumulating in the dishwashing cavity. At the same time, the respirator 13 also has the function of water inflow and storage. .

After the dishes are cleaned, the water is flushed through the flushing water pipe 1C, and the water flows along the flushing water pipe 1C through the venturi 15 into the water tank 18. Here, because the water flows through the venturi tube 15, the venturi tube 15 generates negative pressure at its throat. There is a negative pressure port at the negative pressure. Under the action of the negative pressure, the water in the cup 3 is drained by the tube 17 sucks it away, enters the flushing pipe 1C together, and finally enters the water tank 18 for storage.

When the tableware is cleaned next time, the first valve 19 can be opened, and the water stored in the water tank 18 flows into the water cup 3 for tableware washing.

In the technical solution of the present application, on the one hand, the venturi tube 15 is arranged on the flushing pipe 1C, so that the residual water in the water cup 3 can be removed; on the other hand, due to the arrangement of the water tank 18, the water entering the flushing pipe 1C is After flowing through the venturi tube 15, it can be stored in the water tank 18, which is convenient for next use and will not cause water waste.

In the above embodiment, please refer to FIGS. 1 and 2 together, a valve may or may not be provided between the venturi tube 15 and the water tank 18. For the embodiment without a valve (Figure 1), the end of the flushing pipe 1C can be connected to the upper end of the water tank 18. After the water flows through the flushing pipe 1C into the water tank 18, the liquid level of the water tank 18 is lower than the flushing pipe 1C. When communicating with the water tank 18, the water flow will not flow back from the flushing pipe.

In order to ensure that the water in the water tank 18 will not flow back through the flushing pipe 1C, in this embodiment (see FIG. 2), a second valve 16 is also provided on the flushing pipe 1C, and the second valve 16 is located at the same place. Between the venturi tube 15 and the water tank 18. The second valve 16 may be an on-off valve (such as a solenoid valve) or a one-way valve. For the second valve 16 being a solenoid valve, when the dishwasher is in the residue removal mode, the second valve 16 is opened, and the water flows into the water tank 18 along the flushing pipe 1C. When the dishwasher is in the washing mode, the second valve 16 is closed, so that the water in the water tank 18 will not flow back along the flushing pipe 1C. For the embodiment where the second valve 16 is a one-way valve, the second valve 16 does not need to be controlled, and the water flow in the water tank 18 will not flow back through the second valve 16.

In the previous embodiment, considering that when the dishwasher is in the washing mode, part of the water flow will enter the venturi tube 15 along the drainage tube 17 and siphon, which may cause the venturi tube 15 to be blocked on the one hand, and on the other hand, Water leakage is also not conducive to cleaning. In view of this, in this embodiment, referring to FIG. 3, a third valve 14 is provided on the flush line 1C, and the third valve 14 is located at the water inlet end 1B of the flush line and the venturi. Between tube 15. The third valve 14 can be an on-off valve (such as a solenoid valve) or a one-way valve. Considering that the on-off valve needs to be controlled, for example, the solenoid valve needs to be energized, and the solenoid valve is opened or closed by the operating mode of the dishwasher. The one-way valve is more convenient. The long-term water flow can be maintained along the water inlet 1B of the flushing pipe toward the water tank Flow in the direction of 18, the water in the water cup 3 will not flow back through the drainage tube 17. Therefore, in this embodiment, the third valve 14 is preferably a one-way valve.

There can be various settings for the position of the residual water discharge port, for example, it is provided on the bottom 31 of the water cup (FIG. 1 to FIG. 3) and the side wall 32 (FIG. 4) of the water cup. For the embodiment where the residual water discharge port is arranged on the side wall 32 of the water cup, the residual water discharge port should not be too high from the bottom 31 of the water cup (the height difference is not more than 2mm, such as 0, 1mm, 2mm), because the height The difference directly determines the amount of water in the water cup 3 that cannot be drained away.

On the basis of the previous embodiment, please refer to FIGS. 5 and 6. In order to discharge all the residual water as much as possible, in this embodiment, the cup bottom 31 is inclined toward the residual water discharge port.

For example, the bottom 31 of the cup is inclined in the same direction (FIG. 5 ), and the residual water discharge port is located at the lowest position of the bottom 31 of the cup. For another example, the residual water discharge port is located in the middle of the cup bottom 31 (FIG. 6 ), and the cup bottom 31 is inclined toward the residual water discharge port from other directions.

The above embodiment discusses the situation where the bottom 31 of the water cup is inclined. Here, in order to slow down or avoid the residual water discharge port being blocked by food residues, in a preferred embodiment, the side wall 32 of the water cup is provided with water supply and drainage. The drain port 30 communicated with the pipe 12, and the residual water drain port is located between the center of the cup bottom 31 and the drain port 30. When the water in the water cup is drained away, the flow velocity at the bottom of the water cup 3 is extremely fast, especially in the area close to the drain port 30. The residual water discharge port is set close to the drain port 30. On the one hand, the flow of water passing through the residual water discharge port is faster, and food residues are difficult to deposit at this location; The food residue blocks the residual water discharge port. When the drain port 30 drains the water, the high-velocity water flow can easily drain away the food residue deposited at the residual water discharge port.

For the case where the cup bottom 31 is inclined, the inclination angle α may be in the range of 0 to 90°, but it is considered that if the inclination angle is too large, the water cup 3 will be too high, which will occupy a larger space. In view of this, in a preferred embodiment, the inclination angle of the cup bottom 31 toward the residual water discharge port is 5°-15°, such as 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°. This angle is sufficient for the water flow to flow toward the low place, and it will not cause too much influence on the structure of the bottom of the water cup 3 (occupying the space).

Please refer to Figure 8. When the dishwasher is in the cleaning mode or the residue removal mode, food residues in the water often block the residual water discharge port, which affects the residue removal efficiency. In a preferred embodiment, the bottom 31 of the water cup is provided with a water leakage opening 20, and an insert 21 is installed at the water leakage opening 20. The insert 21 is provided with a plurality of through holes, and the plurality of through holes together form a residue The diameter range of the through hole for the water discharge port is 1mm~3mm. In this way, on the one hand, the arrangement of multiple through holes can reduce the probability of food residues blocking the residual water discharge port; on the other hand, the size (length or width) of food residues is usually greater than 3mm, so that the residual water discharge port is not easily blocked; On the one hand, even if the insert 21 is blocked, considering that the insert 21 itself is detachable, the user can take out the insert 21 and then manually clean it.

In the above content, it is mentioned that the residual water discharge port can be provided in the bottom 31 of the cup or the side wall 32 of the cup. The difference from the above-mentioned embodiment is that in this embodiment, please refer to FIG. The bottom 31 of the water cup is flush, and the residual water discharge port is located at the bottom of the drain port 30. The main reason for the existence of residual water is the large diameter of the drain port 30. Once the water level in the water cup 3 is lower than the height of the drain port 30, the drain pump 11 will suck air and the residual water cannot be drained. The residual water discharge port is arranged at the bottom of the drain port 30. When the drain pump 11 sucks air and cannot drain the remaining water, the residual water can just be drained through the residual water discharge port.

The water tank 18 has two functions. One is to collect the water flowing in from the flushing pipe 1C, and the other is to provide water for cleaning to the water cup 3 for direct discharge into the water cup 3 during the next cleaning. On the one hand, in order to facilitate the water in the water tank 18 to flow into the water cup 3, on the other hand, in order to prevent the water in the water cup 3 from flowing back into the water tank 18, in a preferred embodiment, the position of the water tank 18 is higher than the water cup 3. When the dishwasher is in the washing mode, the first valve 19 is opened, and the water in the water tank 18 can directly flow into the water cup 3 under the action of gravity.

The above descriptions are only the preferred embodiments of the application, and do not limit the scope of the patents of the application. All the equivalent structural transformations or direct/indirect applications made by using the content of the specification and drawings of the application under the inventive concept of the application Other related technical fields are included in the scope of patent protection of this application.

Claims

A dishwasher, including an inner tank, which also includes:

A water cup, the water cup is installed in the inner container, and a residual water discharge port is provided at the lower end of the water cup;

The first valve is arranged between the water tank and the water cup, and the first valve is used to conduct or block the water tank and the water cup;

A flushing water pipeline, the water outlet end of the flushing water pipeline is connected to the water tank, and the water inlet end of the flushing water pipeline is used to communicate with a water source;

The venturi tube is arranged on the flushing pipe;

One end of the drainage tube is connected with the negative pressure port of the venturi tube, and the other end is connected with the residual water discharge port.
The dishwasher according to claim 1, wherein the residual water discharge port is provided at the bottom of the water cup.
The dishwasher of claim 2, wherein the bottom of the cup is inclined toward the residual water discharge port.
The dishwasher according to claim 3, wherein the inclined angle of the bottom of the cup toward the residual water discharge port is 5°-15°.
The dishwasher according to claim 2, wherein the bottom of the cup is provided with a water leak, the drainage tube communicates with the water leak, and an insert is installed at the water leak, and the insert is provided with A plurality of through holes are formed, and the plurality of through holes form the residual water discharge port.
The dishwasher of claim 5, wherein the diameter of the through hole ranges from 1 mm to 3 mm.
The dishwasher according to claim 1, wherein a second valve is further provided on the flushing pipe, and the second valve is located between the venturi tube and the water tank.
8. The dishwasher according to claim 7, wherein a third valve is provided on the flushing line, and the third valve is located between the water inlet end of the flushing line and the venturi tube.
The dishwasher according to claim 8, wherein the second valve is a one-way valve, and/or the third valve is a one-way valve.
The dishwasher according to claim 1, wherein the side wall of the water cup is provided with a drain port communicating with a drain pipe, the lower edge of the drain port is flush with the bottom of the water cup, and the residual water is discharged The port is located at the bottom of the drain port.
The dishwasher according to claim 1, wherein the dishwasher further comprises a water tank, and the water tank is in communication with the water cup.
The dishwasher according to claim 11, wherein the position of the water tank is higher than the water cup.
The dishwasher according to any one of claims 1-12, wherein the dishwasher further comprises a water inlet pipe, a drain pipe, and a respirator, and the water inlet pipe is in communication with the inner container or the water cup, It is used to fill the water cup with water; the drain pipe is connected with the water cup to drain the water in the water cup, and the respirator is arranged on the drain pipe.