CN218889619U - Dish washer - Google Patents

Abstract

The utility model relates to the technical field of kitchen appliances, in particular to a dish washer. The dish washer includes organism, bowl basket, spray arm water pipe, inlet tube and seal assembly, and the organism is including holding the chamber, and spray arm water pipe sets up in holding the chamber, and one of spray arm water pipe and inlet tube is inwards sunken to be formed with first annular groove by its free end, and another of them includes the grafting ring, and the grafting ring is pegged graft in first annular groove, is provided with seal assembly between the lateral wall face of grafting ring and the first annular groove that is adjacent. The effect of first cyclic annular recess is in order to carry out the hoop location with the inlet tube, and spray arm water pipe and inlet tube centering promote and be favorable to improving seal assembly to the sealed effect of spray arm water pipe and inlet tube, avoids spray arm water pipe and inlet tube hookup location to produce the problem of leaking, guarantees the dish washer and treats the better clean effect of wasing tableware.

Description

Dish washer

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to a dish washer.

Background

The dish washer is a kitchen appliance for washing tableware, as shown in fig. 1, the dish washer comprises a machine body 10 ', a bowl basket, a spray arm water pipe 30', a sprayer and a water inlet pipe 40 ', wherein the machine body 10' is provided with a containing cavity 11 ', the bowl basket is arranged in the containing cavity 11' and is used for bearing the tableware to be washed, the water inlet pipe 40 'is fixed on the inner wall of the containing cavity 11', a water source, the water inlet pipe 40 ', the spray arm water pipe 30' and the sprayer are sequentially connected, fluid provided by the water source is sprayed out of the sprayer after passing through the water inlet pipe 40 ', the spray arm water pipe 30' and the sprayer in sequence, and the sprayed fluid is used for washing the tableware to be washed in the bowl basket below the bowl basket.

As shown in fig. 1, in the conventional dishwasher, a shower arm water pipe 30 ' includes a water pipe body 31 ' and a joint 32 ' connected thereto, the joint 32 ' is provided with a horn-shaped opening, and a water inlet pipe 40 ' is inserted into the horn-shaped opening, thereby achieving the butt joint of the shower arm water pipe 30 ' and the water inlet pipe 40 '. In addition, the front end of the water inlet pipe 40 ' is externally sleeved with a sealing member 50 ', and when the water inlet pipe 40 ' is inserted into the horn-shaped opening, the sealing member 50 ' is arranged at a gap between the inner surface of the horn-shaped opening and the outer surface of the water inlet pipe 40 ' to form a seal. However, in the practical use process, the water inlet pipe 40 'and the horn-shaped opening are not aligned in the connecting process, so that the sealing piece 50' is pressed tightly on one side, but cannot be abutted against the inner surface of the horn-shaped opening on the other side, a gap is formed between the sealing piece 50 'and the joint 32', the tightness of the water inlet pipe 40 'and the spray arm water pipe 30' is affected, and water leakage is caused.

Accordingly, there is a need to devise a new dishwasher to improve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a dish washer, which is beneficial to improving the sealing effect of a sealing assembly on a spray arm water pipe and a water inlet pipe by improving the centering of the spray arm water pipe and the water inlet pipe, avoiding the water leakage problem at the connection position of the spray arm water pipe and the water inlet pipe and ensuring the better cleaning effect of the dish washer on tableware to be cleaned.

To achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a dish washer, includes organism, bowl basket, spray arm water pipe, inlet tube and seal assembly, the organism is including holding the chamber, the spray arm water pipe sets up hold the chamber in, the spray arm water pipe with one of them is formed with first annular groove by its free end indent in the inlet tube, another of them includes the grafting ring, the grafting ring is pegged graft in the first annular groove, the grafting ring with be provided with between the lateral wall face of first annular groove that is adjacent mutually seal assembly.

Preferably, the sealing assembly includes:

the first sealing piece is arranged between the inner side wall surface of the plug ring and the side wall surface of the adjacent first annular groove; and/or

The second sealing piece is arranged between the outer side wall surface of the plug ring and the side wall surface of the adjacent first annular groove.

Preferably, at least one of the inner side wall surface of the plugging ring and the side wall surface of the adjacent first annular groove is provided with a second annular groove, and the second annular groove is used for placing the first sealing element.

Preferably, at least one of the outer side wall surface of the plug ring and the side wall surface of the adjacent first annular groove is provided with a third annular groove, and the third annular groove is used for placing the second sealing element.

As a preferable scheme, the plug ring is provided with a first channel, the first channel comprises a first communicating section and a second communicating section which are communicated, the first communicating section and the second communicating section are sequentially distributed inwards from the free end of the plug ring, and the pipe diameter of the first communicating section is larger than that of the second communicating section;

preferably, the engagement position of the first communication section and the second communication section forms a stepped surface, the spray arm water pipe or the water inlet pipe provided with the first annular groove is provided with a free end surface positioned in the plug-in ring, and the free end surface is abutted to the stepped surface.

As a preferable scheme, a second channel for passing fluid is formed in the spray arm water pipe or the water inlet pipe provided with the first annular groove, the second channel is connected with the second communication section, and the pipe diameter of the second channel and the pipe diameter of the second communication section at the connection position are the same and are completely opposite to each other at the connection position.

Preferably, the pipe diameter of the second communication section and/or the pipe diameter of the second channel gradually decreases along the outflow direction of the fluid.

Preferably, a guiding inclined plane is arranged at one end of the plugging ring, which is plugged with the first annular groove.

Preferably, the side wall surface of the first annular groove located on the outer circumference side encloses a first space, and the pipe diameter of the first space is reduced along the insertion direction of the plug-in ring.

Preferably, the first space comprises a guiding section with a variable pipe diameter and a sealing section with a constant pipe diameter, and the guiding section and the sealing section are sequentially connected along the insertion direction of the plug-in ring.

The utility model has the beneficial effects that:

the utility model provides a dish washer which comprises a machine body, a bowl basket, a spray arm water pipe, a water inlet pipe and a sealing component, wherein the machine body comprises a containing cavity, the spray arm water pipe is arranged in the containing cavity, one of the spray arm water pipe and the water inlet pipe is inwards sunken from the free end of the spray arm water pipe to form a first annular groove, the other one of the spray arm water pipe and the water inlet pipe comprises a plug ring, the plug ring is plugged in the first annular groove, and the sealing component is arranged between the plug ring and the side wall surface of the adjacent first annular groove. The effect of first cyclic annular recess is in order to carry out the hoop location with the inlet tube, and spray arm water pipe and inlet tube centering promote and be favorable to improving seal assembly to the sealed effect of spray arm water pipe and inlet tube, avoids spray arm water pipe and inlet tube hookup location to produce the problem of leaking, guarantees the dish washer and treats the better clean effect of wasing tableware.

Drawings

FIG. 1 is a schematic view of a partial structure of a dishwasher provided in the prior art;

fig. 2 is a schematic structural view of a dishwasher according to an embodiment of the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic structural view of a spray arm water pipe, a water inlet pipe and a sprayer according to an embodiment of the utility model;

FIG. 5 is a cross-sectional view of a spray arm water line, a water inlet line, and a sprayer provided by an embodiment of the utility model;

FIG. 6 is a partial cross-sectional view of a shower arm water line and a water inlet line provided by an embodiment of the present utility model;

FIG. 7 is a partial cross-sectional view of a water inlet pipe provided by an embodiment of the present utility model;

fig. 8 is a partial cross-sectional view of a shower arm water conduit provided by an embodiment of the present utility model.

In the figure:

10', a machine body; 11', a receiving cavity; 30', a spray arm water pipe; 31' and a water pipe body; 32', a joint; 40', a water inlet pipe; 50', a seal;

100. dish washing machine;

10. a body; 11. a receiving chamber;

20. bowl basket; 21. a bowl basket frame; 22. a roller;

30. a spray arm water pipe; 31. a first annular groove; 32. a second annular groove; 33. a free end face; 34. a second channel; 35. a first space; 351. a guide section; 352. a sealing section;

40. a water inlet pipe; 41. a plug ring; 411. a third annular groove; 412. a first channel; 4121. a first communication section; 4122. a second communication section; 413. a step surface; 414. a guide slope;

50. a seal assembly; 51. a first seal; 52. a second seal;

60. a buckle;

70. a sprayer;

80. and a guide rail.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present utility model are shown.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", etc., azimuth or positional relationship are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description and simplification of operations, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 2 to 4, the embodiment of the present utility model provides a dishwasher 100, the dishwasher 100 includes a machine body 10, a bowl basket 20, a spray arm water pipe 30, a sprayer 70 and a water inlet pipe 40, wherein the machine body 10 is provided with a containing cavity 11, the bowl basket 20 is arranged in the containing cavity 11 and is used for bearing tableware to be cleaned (not shown in the figure), the water inlet pipe 40 is fixed on the inner wall of the containing cavity 11, a water source (not shown in the figure), the water inlet pipe 40, the spray arm water pipe 30 and the sprayer 70 are sequentially connected, fluid provided by the water source is sprayed from the sprayer 70 after passing through the water inlet pipe 40, the spray arm water pipe 30 and the sprayer 70 in sequence, and the sprayed fluid is used for cleaning the tableware to be cleaned in the bowl basket 20 below the bowl basket 20.

As shown in fig. 2 to 4, the dishwasher 100 further includes a buckle 60, the buckle 60 is fixedly connected with the spray arm water pipe 30, and the buckle 60 is clamped with the bowl basket 20, so that the spray arm water pipe 30 is clamped and regulated on the bowl basket 20, and the bowl basket 20 can stably bear the spray arm water pipe 30. Of course, the buckle 60 may be replaced by other fixing members capable of fixing the shower arm water pipe 30 on the bowl basket 20, and the fixing members may be selected from screws, pins, etc., which are not limited in this embodiment.

As shown in fig. 2 to 4, the dishwasher 100 further includes a guide rail 80 disposed on an inner wall of the accommodating cavity 11, the guide rail 80 extends along a drawing direction of the bowl basket 20, the bowl basket 20 includes a bowl basket frame 21 and a roller 22 pivoted with the bowl basket frame, the roller 22 can move along the guide rail 80, the guide rail 80 can achieve a better guiding effect on the roller 22, the bowl basket 20 can be guaranteed to achieve a better drawing effect along a predetermined direction, and the bowl basket 20 is prevented from deflecting in the drawing process.

As shown in fig. 2 to 4, since the shower arm water pipe 30 is followed by the bowl basket 20, the free end of the shower arm water pipe 30 is separated from the free end of the water inlet pipe 40 when the bowl basket 20 is at least partially withdrawn from the body 10. When the bowl basket 20 is completely pushed into the machine body 10, the free end of the spray arm water pipe 30 is spliced with the free end of the water inlet pipe 40, so that the effect that fluid in the water inlet pipe 40 enters the spray arm water pipe 30 and the sprayer 70 can be realized.

As shown in fig. 1, in the prior art, the shower arm water pipe 30 ' includes a water pipe body 31 ' and a joint 32 ' connected thereto, the joint 32 ' is provided with a horn-shaped opening, and the water inlet pipe 40 ' is inserted into the horn-shaped opening, thereby realizing the butt joint of the shower arm water pipe 30 ' and the water inlet pipe 40 '. In addition, the front end of the water inlet pipe 40 ' is externally sleeved with a sealing member 50 ', and when the water inlet pipe 40 ' is inserted into the horn-shaped opening, the sealing member 50 ' is arranged at a gap between the inner surface of the horn-shaped opening and the outer surface of the water inlet pipe 40 ' to form a seal. However, in the practical use process, the water inlet pipe 40 'and the horn-shaped opening are not aligned in the connecting process, so that the sealing piece 50' is pressed tightly on one side, but cannot be abutted against the inner surface of the horn-shaped opening on the other side, a gap is formed between the sealing piece 50 'and the joint 32', the tightness of the water inlet pipe 40 'and the spray arm water pipe 30' is affected, and water leakage is caused.

In order to solve the above-mentioned problems, as shown in fig. 5-6, the present embodiment provides a dishwasher 100, the spray arm water pipe 30 of the dishwasher 100 is recessed inward from the free end thereof to form a first annular groove 31, the water inlet pipe 40 includes a plugging ring 41, the plugging ring 41 is plugged into the first annular groove 31, a sealing assembly 50 is disposed between the plugging ring 41 and the side wall surface of the adjacent first annular groove 31, the first annular groove 31 is effective for positioning the water inlet pipe 40 in the circumferential direction, and the spray arm water pipe 30 and the water inlet pipe 40 are centered and lifted, thereby being beneficial to improving the sealing effect of the sealing assembly 50 on the spray arm water pipe 30 and the water inlet pipe 40, avoiding the water leakage problem generated at the connection position of the spray arm water pipe 30 and the water inlet pipe 40, and ensuring the better cleaning effect of the dishwasher 100 on tableware to be cleaned.

Of course, in other embodiments, the water inlet pipe of the dish washer is provided with the first annular groove by the inward concave of the free end of the water inlet pipe, the spray arm water pipe comprises the inserting ring, the inserting ring is inserted into the first annular groove, the sealing component is arranged between the inserting ring and the side wall surface of the adjacent first annular groove, the effect of the first annular groove is also to locate the spray arm water pipe in the annular direction, the spray arm water pipe and the water inlet pipe are centered and lifted, the sealing effect of the sealing component on the spray arm water pipe and the water inlet pipe is improved, the water leakage problem caused by the connection position of the spray arm water pipe and the water inlet pipe is avoided, and the dish washer is guaranteed to have a better cleaning effect on dishes to be cleaned.

In addition, after the bowl basket 20 is repeatedly pulled out for a plurality of times, the sealing performance of the sealing assembly 50 is reduced, and the sealing effect of the spray arm water pipe 30 and the water inlet pipe 40 is also affected. In order to solve the above problems, as shown in fig. 5 to 6, the seal assembly 50 includes a first seal member 51 and a second seal member 52, the first seal member 51 is disposed between the inner side wall surface of the plugging ring 41 and the side wall surface of the adjacent first annular groove 31, the second seal member 52 is disposed between the outer side wall surface of the plugging ring 41 and the side wall surface of the adjacent first annular groove 31, and by disposing the first seal member 51 and the second seal member 52, the two-stage sealing effect between the shower arm water pipe 30 and the water inlet pipe 40 can be achieved, and compared with the scheme in which only one layer of seal member 50' is disposed in fig. 1, the sealing effect between the shower arm water pipe 30 and the water inlet pipe 40 can be effectively improved by disposing the first seal member 51 and the second seal member 52. In addition, the length of the fluid overflowing path can be increased by inserting the inserting ring 41 into the first annular groove 31, the contact area of the spray arm water pipe 30 and the water inlet pipe 40 is increased, the connection strength and the supporting strength of the spray arm water pipe 30 and the water inlet pipe 40 are improved, and the sealing effect is also improved.

Of course, in other embodiments, only the first seal, or only the second seal may be provided in order to reduce the difficulty of assembling the shower arm water pipe, the water inlet pipe, and the seal assembly.

As shown in fig. 6 and 7, the outer side wall surface of the plugging ring 41 is provided with a third annular groove 411, the third annular groove 411 is used for placing the second sealing element 52, the second sealing element 52 is in the third annular groove 411, and the bowl basket 20 prevents the second sealing element 52 from falling off in the process of pulling.

In other embodiments, a third annular groove is formed on a side wall surface of the first annular groove adjacent to an outer side wall surface of the plugging ring, and the third annular groove is used for placing the second sealing element, so that the problem of preventing the second sealing element from falling off can be solved. In other embodiments, the third annular groove may be formed on the outer side wall surface of the plugging ring and the side wall surface of the adjacent first annular groove at the same time, so that the problem that the second sealing element falls off can be prevented.

As shown in fig. 6 and 8, the adjacent side wall surface of the first annular groove 31 on the inner side wall surface of the plugging ring 41 is provided with a second annular groove 32, the second annular groove 32 is used for placing the first sealing element 51, the first sealing element 51 is in the second annular groove 32, and the bowl basket 20 prevents the first sealing element 51 from falling off in the process of drawing.

In other embodiments, the inner side wall surface of the plugging ring is provided with a second annular groove, and the second annular groove is used for placing the first sealing element and can also prevent the first sealing element from falling off. In other embodiments, the second annular groove may be opened at the same time on the inner side wall surface of the plugging ring and the side wall surface of the adjacent first annular groove, so as to prevent the first sealing element from falling off.

As shown in fig. 6 to 8, the plugging ring 41 has a first channel 412, the first channel 412 includes a first communicating section 4121 and a second communicating section 4122 which are communicated, the first communicating section 4121 and the second communicating section 4122 are sequentially arranged inwards from the free end of the plugging ring 41, the pipe diameter of the first communicating section 4121 is larger than that of the second communicating section 4122, as shown in fig. 7, the joint position of the first communicating section 4121 and the second communicating section 4122 forms a stepped surface 413, as shown in fig. 6 and 8, the spray arm water pipe 30 has a free end surface 33 located in the plugging ring 41, when the spray arm water pipe 30 is plugged with the water inlet pipe 40, the free end surface 33 is abutted against the stepped surface 413, the free end surface 33 and the stepped surface 413 can form a third-stage sealing effect, so as to realize the mechanical seal of the spray arm water pipe 30 and the water inlet pipe 40, and further improve the sealing effect of the spray arm water pipe 30 and the water inlet pipe 40. In addition, the free end surface 33 and the step surface 413 can limit the horizontal movement of the spray arm water pipe 30 and the water inlet pipe 40, so as to prevent the impact between the spray arm water pipe 30 and the water inlet pipe 40.

As shown in fig. 6, the spray arm water pipe 30 is provided with a second channel 34 for passing fluid, when the spray arm water pipe 30 is plugged with the water inlet pipe 40, the second channel 34 is connected with the second communication section 4122, the pipe diameter of the second channel 34 at the connection position is the same as that of the second communication section 4122, and the second channel 34 and the second communication section 4122 are completely opposite at the connection position, so that the fluid can smoothly flow at the connection position of the spray arm water pipe 30 and the water inlet pipe 40, a flow dead zone is prevented from being formed, the flow resistance is reduced, and the flow speed of the fluid is improved.

As shown in fig. 6, the pipe diameter of the second communication section 4122 gradually decreases in the outflow direction of the fluid, and the flow rate of the fluid can be increased. In addition, the pipe diameter of the second passage 34 may be gradually reduced in the outflow direction of the fluid, and the flow rate of the fluid may be increased.

As shown in fig. 6, a guiding inclined plane 414 is arranged at the end of the plugging ring 41 plugged with the first annular groove 31, so that on one hand, the second sealing element 52 is conveniently sleeved on the second sealing element 52, and then the second sealing element 52 is installed in the third annular groove 411 shown in fig. 7; on the other hand, insertion of the insert ring 41 into the first annular groove 31 is facilitated.

As shown in fig. 6 and 8, the sidewall surface of the first annular groove 31 on the outer peripheral side encloses a first space 35, and the pipe diameter of the first space 35 is reduced along the insertion direction of the plug-in ring 41, so that the plug-in ring 41 is conveniently inserted into the first annular groove 31, and quick and accurate butt joint of the spray arm water pipe 30 and the water inlet pipe 40 is realized.

As shown in fig. 6 and 8, the first space 35 includes a guiding section 351 with a variable pipe diameter and a sealing section 352 with a constant pipe diameter, the guiding section 351 and the sealing section 352 are sequentially connected along the insertion direction of the plugging ring 41, the inner side wall surface of the sealing section 352 presses the second sealing member 52, the guiding section 351 facilitates the plugging ring 41 to be inserted into the first annular groove 31, the inner diameter of the sealing section 352 is reduced compared with the inner diameter of the guiding section 351, and thus the inner side wall of the sealing section 352 can press the second sealing member 52 to realize the sealing between the second sealing member 52 and the plugging ring 41.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (11)

1. The utility model provides a dish washer, includes organism (10), bowl basket (20), spray arm water pipe (30), inlet tube (40) and seal assembly (50), organism (10) are including holding chamber (11), spray arm water pipe (30) set up hold in chamber (11), its characterized in that, spray arm water pipe (30) with one of inlet tube (40) is formed with first annular groove (31) by its free end indent inwards, and another of them includes grafting ring (41), grafting ring (41) are pegged graft in first annular groove (31), be provided with between the lateral wall face of grafting ring (41) and adjacent first annular groove (31) seal assembly (50).

2. The dishwasher of claim 1, characterized in that the sealing assembly (50) comprises:

a first seal (51) provided between the inner wall surface of the plug ring (41) and the adjacent side wall surface of the first annular groove (31); and/or

And a second sealing member (52) arranged between the outer side wall surface of the plug ring (41) and the side wall surface of the adjacent first annular groove (31).

3. Dishwasher according to claim 2, characterized in that at least one of the inner side wall surface of the plug ring (41) and the adjacent side wall surface of the first annular groove (31) is provided with a second annular groove (32), the second annular groove (32) being used for placing the first seal (51).

4. Dishwasher according to claim 2, characterized in that at least one of the outer side wall of the plug ring (41) and the adjacent side wall of the first annular groove (31) is provided with a third annular groove (411), the third annular groove (411) being used for placing the second seal (52).

5. The dishwasher of claim 4, wherein the plug ring (41) has a first channel (412), the first channel (412) comprising a first communication section (4121) and a second communication section (4122) in communication, the first communication section (4121) and the second communication section (4122) being arranged in sequence inwardly from the free end of the plug ring (41), the pipe diameter of the first communication section (4121) being larger than the pipe diameter of the second communication section (4122).

6. Dishwasher according to claim 5, characterized in that the engagement position of the first communication section (4121) with the second communication section (4122) forms a stepped surface (413), the shower arm water pipe (30) or the water inlet pipe (40) opening the first annular groove (31) having a free end surface (33) located in the plug ring (41), the free end surface (33) abutting against the stepped surface (413).

7. The dishwasher of claim 5, characterized in that the shower arm water pipe (30) or the water inlet pipe (40) provided with the first annular groove (31) is provided with a second channel (34) for passing fluid, the second channel (34) is connected with the second communicating section (4122), and the second channel (34) and the second communicating section (4122) have the same pipe diameter at the connection position and are completely opposite at the connection position.

8. Dishwasher according to claim 7, characterized in that the tube diameter of the second communication section (4122) and/or the tube diameter of the second channel (34) decreases gradually in the outflow direction of the fluid.

9. Dishwasher according to any one of claims 1 to 8, characterized in that the end of the plug-in ring (41) that is plugged into the first annular recess (31) is provided with a guide bevel (414).

10. Dishwasher according to any one of claims 1 to 8, characterized in that the side wall surface of the first annular recess (31) on the outer circumferential side encloses a first space (35), the tube diameter of the first space (35) decreasing in the insertion direction of the plug-in ring (41).

11. Dishwasher according to claim 10, characterized in that the first space (35) comprises a guiding section (351) of varying pipe diameter and a sealing section (352) of constant pipe diameter, the guiding section (351) and the sealing section (352) being connected in sequence along the insertion direction of the plug-in ring (41).

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