EP2430965A2 - Dishwasher - Google Patents

Abstract

The dishwasher (1) has a rinsing container (2) whose single-or multi-piece bottom unit (7) is sealed with a housing unit (8) in an installed position. A U-shaped prolonged extended gasket is mounted in a position between the bottom unit and the housing unit. The gasket is firmly fixed to the housing unit, and passes through simple down depressions of the housing unit toward the bottom unit into a correct plant position. The gasket is pressed with a cross-out portion against the bottom unit that includes a receiving groove (29). An independent claim is also included for a method for manufacturing a dishwasher.

Description

The invention relates to a dishwasher, which has a washing at least water leading rinsing container for cleaning of introduced Good, wherein the washing compartment is made in several parts and at least one single or multi-piece ground unit and a one-piece or multi-piece, connected to the ground unit in the mounted position hood unit and wherein the bottom unit and hood unit are sealed against each other, according to the preamble of claim 1.

Firstly, in dishwashers washing containers, the processing rooms for introduced Good, such as crockery, cutlery, glasses and the like form to produce a total of stainless steel, the Spülbehälter example, with a rear wall, an upper and lower wall and two side walls total to one Assembly unit welded and closed at the front by a movable door.

On the other hand, rinsing containers are often composed of several structural units, wherein a floor unit, which may also comprise lower parts of a rear wall or of side walls as upstanding flange areas, for example, for material and weight saving reasons is made of a plastic and on this floor unit a hood unit , which is made of stainless steel, for example, is mounted during assembly. The hood unit may have approximately the shape of an inverted "U" and include the two side walls and an upper wall, so that the rear wall must then be fitted separately. However, the hood unit can also include the rear wall, so that only the assembly step of the assembly of the two units, hood unit and bottom unit to make the final assembly of the washing container.

In the assembly of such a two- or multi-part washing container is previously pressed to seal the connection between the base unit and hood unit against leakage of water from the washing a long-stretched hose or a sealing cord made of silicone rubber with a tool in a constructive gap between said units , To this hose against squeezing out, in particular by the resulting vapor pressure during operation, too secure, three-sided (on the left and right side wall and the rear wall) in the ground unit, there on the rising flanges, impressed in a subsequent manufacturing step imprints. This step is often referred to as "insertion of holding lenses".

Since on the one hand the silicone hose is difficult to assemble and on the other hand, the additional manufacturing step for holding down and securing the hose is required, the installation of such a seal is very complicated overall.

The invention is therefore based on the problem of simplifying the installation of a seal in a multi-part wall of a washing container.

The invention solves this problem by a dishwasher with the features of claim 1 or by a method having the features of claim 11. Further advantages and features and further developments of the invention are specified in claims 2 to 10 and 12 to 13.

With the invention, a dishwasher, in particular household dishwasher, created, the assembly is simplified, at the same time a very reliable, secure seal between the units of the washing is achieved. Due to the fact that the seal is held firmly on the hood unit and no longer an attachment to both the floor and the hood unit is required, the seal no longer needs to be positioned, secured against rotation and secured in the final assembly of the washing container, but this can already be pre-assembled on the hood unit. Twisting a sealing strip is excluded. In addition, the final assembly is considerably accelerated because the seal assembly is eliminated.

Also, the storage can be simplified, since now the respective hood and the seal attached in advance preferably form a single unit.

In particular, according to an expedient development of the invention, the seal of its mechanical support in the direction of the ground unit engages in such a way that the seal with its spreading area is pressed non-positively against the ground unit.

The mounting of the seal on the hood unit can be done in various ways, for example by gluing or welding. A particularly simple assembly provides for a purely mechanical support of the seal, for example by a form-fitting bordering, in particular with a clamping holder, in order thereby to secure the seal in a stable and captive manner.

If according to an advantageous embodiment of the invention, the lower edge region of the hood unit for forming a gasket receiving channel from the lower edge of the hood unit U-shaped upwards, such a mechanical support of the seal can be easily made possible.

In this case, according to a further advantageous embodiment of the invention, the edge region for forming the gasket receiving channel from the lower edge of the hood unit outwardly deformed, so that the seal held therein with a portion engages transversely outwards and thus automatically with this sub-area in one non-positive system can come to an upstanding flange of the ground unit.

Said channel can be applied after insertion of the seal in this expediently with an inward force component, so that it reduces its inside diameter and thus reliably holds the previously introduced seal by clamping.

From this clamp can then advantageously the sweeping area of the seal comprise at least almost transversely to a vertical plane in operating position extending leg, so that this leg is still movable when placing the hood unit on the ground unit and thereby with a large sealing contact surface of towering Can cling to edge flange areas.

For a reliable mounting and simple pre-assembly, the seal expediently comprises an at least with respect to each side wall and the rear wall in each case one-piece, elongated and the hood unit circumferential profile.

With the invention, the method for producing a dishwasher with a multi-part washing container can be accelerated because in the final assembly of hood unit and bottom unit together no longer a seal between the two units laid, positioned secured against rotation and must be secured, but the seal pre-assembled before the final assembly of the named parts and automatically arrives at their correct position when assembling the units.

In particular, by simply lowering the hood portion in the direction of the bottom unit, the seal automatically and forcibly gets into its correct abutment position, so that no further aligning measures or anti-rotation measures are needed, which reduces time and costs in assembly.

Other advantageous developments of the invention are given in the dependent claims.

The invention and its advantageous developments and advantages thereof are explained below with reference to drawings.

Fig. 1

ein vorteilhaftes Ausfertigungsbeispiel einer erfindungsgemäß ausgebildeten Geschirrspülmaschine mit einer vorderseitigen Tür und einem mehrteilig ausgebildeten Spülbehälter mit einer Haubeneinheit und einer Bodeneinheit, wobei die Geschirrspülmaschine hier in Ansicht von der rechten Seite bei geschlossener Tür und bei der besseren Übersicht halber teilweise transparenter rechter Seitenwand dargestellt ist,

Fig. 2

eine perspektivische Einzelteilansicht der Bodeneinheit vor Anmontage der Haubeneinheit,

Fig. 3

eine ähnliche Ansicht wie Figur 2, jedoch nach Aufsetzen der Haubeneinheit,

Fig. 4

eine vergrößerte Ausschnittsansicht, etwa entsprechend dem Detail IV in Figur 3, jedoch der Übersicht halber hier ohne montierte Dichtung gezeichnet,

Fig. 5

eine vergrößerte Ausschnittsansicht, etwa entsprechend dem Detail V in Figur 4, hier vollständig mit eingesetzter Dichtung gezeichnet,

Fig. 6

eine gegenüber Figur 5 leicht gedrehte, mehr auf das vordere Dichtungsende schauende Ansicht,

Fig. 7

eine perspektivische Ansicht der in dem Rahmenteil - hier angeschnitten-gehaltenen Dichtung, und

Fig. 8

eine Einzelteil-Querschnittsdarstellung einer an der Haubeneinheit fest halterbaren Dichtung, hier im Bereich der linken Seitenwand.

Each show schematically:

Fig. 1

an advantageous exemplary embodiment of an inventively designed dishwasher with a front door and a multi-part designed washing container with a hood unit and a bottom unit, the dishwasher is shown here in view from the right side with the door closed and the better overview half transparent right side wall

Fig. 2

an individual perspective view of the floor unit before mounting the hood unit,

Fig. 3

a similar view as FIG. 2 but after placing the hood unit,

Fig. 4

an enlarged sectional view, approximately corresponding to the detail IV in FIG. 3 , but for the sake of clarity here drawn without mounted seal,

Fig. 5

an enlarged sectional view, approximately corresponding to the detail V in FIG. 4 , here completely drawn with inserted seal,

Fig. 6

one opposite FIG. 5 slightly turned, looking more towards the front end of the seal,

Fig. 7

a perspective view of the in the frame part - here cut-held seal, and

Fig. 8

a single-part cross-sectional view of a firmly held on the hood unit seal, here in the region of the left side wall.

Elements with the same function and mode of operation are each provided with the same reference numerals in the figures.

In the FIG. 1 Dishwasher 1 shown in particular forms a household dishwasher and has a washing container 2 for receiving ware to be processed dishes, pots, cutlery, glasses, cooking utensils and. on. The rinsing container 2 is in operation with water and possibly with detergent and / or rinse aid, excipients and / or additives such as salts added water, ie generally expressed so-called. Rinse liquor or rinse S, acted upon, for example, via spray arms 3, 4 introduced be and act on the Spülkörben 5, 6 held dishes. The size of the washing container 2, the number of washing baskets and spray arms and the respective geometry are variable.

The washing container 2 is designed here as a sealed inner container in an outer housing. However, this is not mandatory, since the outer housing can at least largely be omitted in built-in appliances.

The rinsing container 2 is composed of several units, here of a bottom unit 7 and a hood unit 8, wherein these units 7, 8 each in one piece or may be constructed in several pieces. For example, the hood unit may form a U-shaped portal formed from a first sheet with side walls 9, 10 and an upper wall 11 and be welded to a complete back unit 12 with a used between the side walls 9, 10 rear wall. Often, such a hood unit 8 consists essentially of stainless steel, whereas the bottom unit 7 is often formed of plastic for weight and cost savings. In the assembled state, the hood unit 8 and the bottom unit 7 are fixed and sealed against each other to form the washing compartment 2 connected to each other.

As shown FIG. 1 the rinsing container 2 for receiving items to be cleaned by a front side, about a horizontal axis 13a pivotable door 13 is closed, which has a the interior of the washing compartment 2 facing and movable with the door 13 inner wall 14. Instead of the front door 13, this can for example also close the washing container 2 on the top.

The dishwasher 1 further comprises a supply device for fresh water FW, can be introduced via the externally supplied fresh water FW in the washing compartment 2. The water from the washing container 2 collects due to its gravity as a rinse S in a collecting pot 15, which is in the lower part of the washing container 2 as a recess in its bottom, which is also referred to as a washing tub 16 and here in the embodiment part of the bottom unit 7, located. Here can also be a total designated 17 screening device.

The collecting pot 15 is followed by a circulating pump, with the aid of which the rinsing liquor or rinsing liquid S can be pumped during a circulation phase of a rinsing from the collecting pot 15 via a heater to a distribution space for re-introduction into the, preferably rotatably mounted, spray arms 3, 4.

In contrast, in order to be able to dissipate rinse liquor S that is no longer required from the rinsing container 2, a suds pump is furthermore provided which is connected on the suction side to the collection pot 15 and on the output side to a waste water connection line. By means of the drain pump, it is possible to pump out wash liquor S during a pumping out phase of a wash cycle as wastewater AW to the outside.

In order to ensure the tightness of the washing at its joint area between hood unit 8 and bottom unit 7, there is at least one in the assembled position between bottom 7 and hood unit 8 long and extending the joint course following seal 18 is provided (in FIG. 1 not shown), which, however, does not have to be fastened separately to both units 7, 8, but is held firmly only on the hood unit 8. From there, the seal 18 extends in the direction of the bottom unit 7 and, in the assembled state, with its spreading portion 19, is pressed non-positively against the bottom unit 7, as in FIG FIG. 6 easy to recognize.

The seal 18 here has a horizontal, in plan view approximately U-shaped course and surrounds the hood unit 8 circumferentially outside in its lower region. In this case, the seal 18 may be held firmly in different ways on the hood unit 8, for example, glued to this, welded and / or bolted. Here it is provided that the seal 18 is held at least mechanically fixed to the hood unit 8. An additional attachment, such as gluing, is possible. The seal is generally considered in advance, i. mounted prior to their assembly with the ground unit on the hood unit 8, in particular fixed in advance.

The mechanical attachment is designed so that the seal is clamped in a lower edge region 20 of the hood unit 8. For this purpose, the edge region 20 is formed to form a gasket 18 receiving channel 21 of the lower edge 22 of the hood unit U-shaped upwards ( Fig. 7 ). This deformation can circulate the entire hood unit 8 in a plan view approximately U-shaped and is formed so that the edge portion 20 is formed to form the channel 21 from the lower edge 22 of the hood unit to the outside and held therein seal 18 with a portion 19 after transversely outwards, ie to the left of the left side wall 9, to the right of the right side wall 10 and to the rear of the rear wall 12 from. The introduction of the seal 18 can be done either in the extended state of the parts of the hood unit 8 before their connection as a complete hood unit 8 or alternatively after completion of the hood unit 8. This process can take place in the prefabrication or in the final final assembly.

The seal 18 here comprises a rubber-elastic extrusion profile 23, which may consist of any material suitable for sealing function, in particular a plastic and / or rubber material, preferably for example EPDM or TPE. To hold the seal 18 firmly and captively in the channel 21, this can be applied after introduction of the seal 18 with an inward force component for clamping retention of the seal (crimping of the sheet metal contour), so as to clamp the seal 18 in the channel 21 and permanently - despite during the assembly of occurring shear forces - to be able to secure.

The seal 18 with its profile 23 is according to the cross-sectional view FIG. 8 formed so that an enclosed in the channel 21 on both sides, upright base body 25 is formed which is vertical in the operating position and from which a cross-leg 19 projects at least almost transversely to the side. This does not mean that the leg must protrude exactly at right angles, but he can invest in particular with an oblique upward orientation of upwardly extending flange portions 26 of the bottom unit 7 with a contact surface 27, such as in FIG. 5 is shown. The flange portions 26 may be formed in particular crenellated. This system results from the fact that the hood unit 8 is mounted with the pre-assembled seal 18 during assembly to a provided with in the washing water outlets 30 receiving groove 29 of the bottom unit 7 from above, that the bottom unit 7 associated, towering edge flange portions 26th laterally or laterally, in particular with transverse spacing, outside the lower edge 22 of the hood unit 8 and thereby the extending from the hood unit 8 legs 19 of the seal 18 automatically in this assembly without further action, such as insertion through a tool to the above upstanding flange 26 abuts applying. By the water drains 30 ensures that in this area spraying rinse runs back into the washing 2. The hood unit 8 is located only at elevated levels between the water drains 30 in the receiving groove 29 of the bottom unit 7, so that in the area of the water drains 30, a vertical gap 31 between the bottom unit 7 and the hood unit 8 remains.

In order to achieve the mobility of the leg 19 of the seal 18, a dilute region 28 is formed on the base body 25 below the leg 19, which is like a Film hinge acts. As a result, a large, reliably sealing and not only linear contact surface 27 is formed between the leg 19 and the flange region 26.

In this assembly, the U-fold of the lower edge 22 of the hood unit 8 acts as a stabilization of the free hood end and also as protection for this edge region 20 (leading plate contour).

Regardless of the question of whether the seal 18 is mounted in the final assembly or previously to the hood unit 8, it is in any case before the final assembly of hood unit 8 and bottom unit 7 fixed to each other, with its base body 25 immovable and captive on the hood unit eighth held, over the entire length of the contact joint between said parts. In the process of mounting the hood unit 8 and bottom unit 7 with each other then the seal 18 reaches from its fixed support of the base body 25 automatically with the outreaching leg or other portion 19 in a sealing contact position (contact surface 27) on the bottom unit 7, namely there in Area of edge-rising flange 26.

By the clamping retention of the seal 18 on its base body 25 can also act a large shear on the portion 19, without the base body could still slip. The base body 25 is for this purpose, for example, in a channel 21, which is formed by U-shaped bend of the lower edge 22 of the hood unit 8, held firmly. The holder behind an undercut, in a dovetail groove or the like is possible. However, in the case of the thin-walled sheet metal of the hood unit 8, the described bend is particularly advantageous.

It is understood that a seal 18 may also be formed mehrlippig with several extending portions 19. Alternatively, a plurality of seals 18 may be arranged one above the other. It is also possible that a seal 18 of the hood unit 8 and a further seal 18 of the bottom unit 7 is assigned and their outreaching portions 19 automatically overlap each other during assembly, for example, so as to form an upwardly tight seal.

If one or more wall parts of the Spülbehälterhaube and / or the rear wall of the washing compartment are made of plastic, the seal can be formed in advance, ie, prior to assembly with the bottom unit, to the respective wall part and / or the rear wall. For this purpose, a 2-component plastic injection molding process may be appropriate. In particular, the seal may be made of a softer plastic than the respective wall made of plastic and / or the plastic back wall.

LIST OF REFERENCE NUMBERS

1

Home appliance,

2

rinse tank,

3

spray arm,

4

spray arm,

5

wash rack,

6

wash rack,

7

Floor unit

8th

Hood unit

9

left side wall,

10

right side wall,

11

upper wall,

12

Rear wall,

13

Door,

13a

Pivot axis

14

Inner wall of the door,

15

Collecting pot,

16

rinsing tank,

17

screening,

18

Poetry,

19

extensive section,

20

lower edge area,

21

Channel,

22

edge,

23

Profile,

24

25

Base body,

26

flange,

27

Contact area,

28

diluted area,

29

receiving groove,

30

Water drains,

31

vertical gap,

FW

Fresh water,

S

rinsing,

AW

Sewage,

Claims (13)

Dishwasher (1), in particular Haushaltsgeschirrspülma-machine, with a running at least water rinsing tank (2) for introduced Good, wherein the washing compartment (2) at least one single or multi-piece ground unit (7) and a single or multi-piece, with the Floor unit (7) in the mounted position connected hood unit (8), and wherein the bottom unit (7) and hood unit (8) are sealed from each other,
characterized,
in that at least one seal (18), which extends in the mounted position between base (7) and hood unit (8), is fixedly held only on the hood unit (8) and extends (19) from this mount in the direction of the floor unit (7). Dishwasher (1) according to claim 1,
characterized,
that the seal (18) with its extended portion (19) is non-positively pressed against the bottom unit (7). Dishwasher (1) according to one of claims 1 or 2,
characterized,
that the seal (18) is held at least mechanically fixed to the cover unit (8). Dishwasher (1) according to one of the preceding claims,
characterized,
that the seal (18) in a lower edge region (20) of the hood unit (18) is held clamped. Dishwasher (1) according to claim 4,
characterized,
in that the edge region (20) is formed U-shaped upward from the lower edge (22) of the hood unit (8) to form a channel (21) receiving the seal (18). Dishwasher (1) according to claim 5,
characterized,
that the edge region (20) for forming the gasket (18) receiving channel (21) from the lower edge (22) of the hood unit (8) is deformed outwardly and held therein seal (18) with a portion (19) cross outside attacks. Dishwasher (1) according to one of claims 4 to 6,
characterized,
that the channel (21) after insertion of the seal in this with an inward force component for clamping retention of the seal (18) is acted upon. Dishwasher (1) according to one of the preceding claims,
characterized,
that the outreaching portion (19) of the seal (18) comprises a leg which extends at least approximately transversely to a vertical plane in the operating position. Dishwasher (1) according to claim 8,
characterized,
in that the hood unit (8) is placed on the floor unit (7) in such a way that the floor unit (7) has upstanding flange-side flange areas (26) outside the lower edge (22) of the hood unit (8) and that of the hood unit (8 ) extending legs (19) of the seal (18) against the upstanding flange portions (26). Dishwasher (1) according to one of the preceding claims,
characterized,
in that the seal (18) comprises a one-piece, elongated profile which encircles the hood unit (8). A process for producing a dishwasher (1), in particular a domestic dishwasher, which is equipped to form a processing space for items to be washed with a multi-part washing container (2), said washing container (2) from at least one single or multi-piece bottom unit (7) and a - or multi-piece, with the bottom unit (7) connectable hood unit (8) is constructed and sealed during assembly floor unit (7) and hood unit (8) against each other, in particular according to one of the preceding claims,
characterized,
that before the final assembly of said parts (7; 8) to each other on the hood unit (8) an elongated seal (18) is pre-assembled and in the connection of the hood unit (8) and bottom unit (7) with each other, the seal (18) of their fixed bracket on the hood unit (8) with a portion (19) in a sealing contact position on the bottom unit (7) passes. Method according to claim 11,
characterized,
that the seal (18) is held mechanically fixed to the hood unit (8) and passes by simply lowering the hood unit (8) in the direction of the bottom unit (7) in its correct contact position to this. Method according to one of claims 11 or 12,
characterized,
in that the seal (18) is clamped in a lower edge area (20) of the hood unit (8) and for this the edge area (20) for forming a channel (21) receiving the seal (18) from the lower edge (22) of the hood unit U-shaped upwardly and after insertion of the seal (18) in this with an inward component for clamping retention of the seal (18) is acted upon.

Images