EP1090580A2 - Dishwasher with a wash tub - Google Patents

Abstract

The storage container is a line section of the water supply which includes a water supply unit (16), which is fed from a water supply system and opens out in to a freely flowing stretch. The storage container is surrounded by a water supply container (16), which still has one or more chambers for the respective reception of a further amount of water. The free flowing stretch is surrounded by the water supply container. The rinsing container (2) air is led in an air duct, which is coupled areally, at least partly at the storage container.

Description

The invention relates to a dishwasher with a Rinsing container according to the preamble of claim 1.

Such a dishwasher is known from DE 40 37 367 A1 known. This is washware for the purpose in the rinsing container can be classified during cleaning during a washing program. The Rinse program is completed by a drying phase, in which the cleaned dishes are dried. Outside of A water inlet container is arranged in the rinsing container Fresh water from a domestic water pipe via a water inlet is filled. This fresh water will be used for next Rinse cycles are stocked for the filling of the rinsing container to deliver. During the drying phase, the moist Air from the flushing tank by means of a blower the water inlet tank where it passed over the surface of the stored amount of water and then blown back is returned to the rinsing container. When overflowing the Air is cooled and dehumidified, so that the drying of the wash ware is improved. Such However, a solution for a dishwasher has the disadvantage on that the filling and emptying of the water inlet tank must be carried out by a complex control and a variety of components are required. In particular re are for the control of the inflow and outflow from the Water inlet tank one valve required.

It is therefore an object of the invention to provide a dishwasher specify with a rinsing container according to the preamble of claim 1, where a particularly good drying result with one particularly low cost of parts is enabled.

This object is achieved according to the invention in a dishwasher according to the preamble of claim 1 solved in that the reservoir is a line section of the water supply line which is fed by a water supply system and flows into a free flow path. With a dishwasher it is necessary to provide a free flow path, to avoid that during a water supply sucked the domestic water back into the water supply network if there is a sudden negative pressure in this line network occurs. Between the inlet valve and the one on a higher one The level of the free flow path is according to the Invention of the filled storage container, the content of the Reservoir can only drain if the inlet valve is open Water is supplied from the mains, which the contents of the reservoir of the free flow path and then feeds the rinsing container. The emptying of the storage container occurs with every water inlet. With the content of this Storage container is during the drying phase of the washing program the purge air into a heat exchanging contact brought so that the warm moist air of the rinsing container on cold container content is cooled. This will cause condensation which favors moisture.

The advantage of the invention is that for emptying of the storage container, no special control is required is. In addition, none is connected downstream of the storage container Valve device needed that the reservoir closes if the amount of water is to be stored in it and which must be opened when the contents of the container drain should. The exchange of the liquid in the container takes place at everyone Water intake takes place without additional control mechanisms.

The reservoir is advantageously from a water inlet container comprises, the at least one chamber for receiving a further amount of water. This increases the volume of water that can extract heat from the moist air, so that the condensation effect can be intensified. In particular the chamber for the further amount of water is a container for storing a quantity of regeneration water, which is program-controlled and / or, as required, a brine container in the dishwasher is feedable.

So that the water supply device in a compact arrangement and is therefore particularly cost-effective to produce free flow path also conveniently from the water inlet tank includes.

To have a particularly large heat exchanger surface between the stocked Maintaining water volume and circulating moist air is the rinsing tank air in an air duct, which at least is partially coupled to the reservoir. there it is advantageous if the storage container is particularly flat Execution is so that a given volume the largest possible contact area is available. Will the Finally, flushing tank air in the air duct also on one or the several chambers for accommodating another The amount of water coupled is the surface of the heat exchanger chosen particularly large and condensation is further promoted.

The water present in the storage tank is in every washing program renewed several times, namely with every water inlet, so that it was last replaced at the beginning of a rinse cycle becomes. This rinse cycle is usually carried out immediately before the drying phase. The one stored in the reservoir Water can be so due to the heat radiation of the Rinsing container with warm rinsing liquid only during the heat up the relatively short period of the rinse cycle, so that only a slight rise in temperature in the storage container is recorded. Heating the stored The amount of water can also be kept particularly low, if the storage container and / or the at least one chamber for the additional amount of water compared to the rinsing tank is heat insulated.

During the contents of the storage container several times per wash program is renewed, this does not affect the liquid in the at least one chamber, so that this at the beginning of the Drying phase already a higher temperature than the liquid has in the reservoir. Hence the condensation effect particularly high if the rinsing tank air is in the air duct is that they first on the at least one chamber for the absorption of the further amount of water and then on Storage container is passed. The heat exchange takes place therefore first on a slightly warmer and then on one cooler heat exchanger surface instead. The temperature difference there remains between warm moist air and the contact surface almost the same.

The invention is based on the drawings Embodiment explained in more detail.

Fig. 1 eine Seitenansicht einer Geschirrspülmaschine mit einem Spülbehälter und einer Wasserzulaufvorrichtung,

Fig. 2 eine Vorderansicht der Geschirrspülmaschine gemäß Fig. 1 (Prinzipskizze) und

Fig. 3 die Wasserzulaufvorrichtung in der Einzeldarstellung.

Show it:

1 is a side view of a dishwasher with a washing container and a water supply device,

Fig. 2 is a front view of the dishwasher shown in FIG. 1 (schematic diagram) and

Fig. 3 shows the water supply device in the individual representation.

A household dishwasher has an outer casing 1 a washing container 2 for holding items to be washed within crockery baskets 41, 42. A front door 3 enables access to the flushing tank 2. A leakage water trough 4 engages under all water-carrying components inside the outer casing 1. It is a float switch 5 assigned to when liquid occurs in the leakage water pan Triggers 4 control processes, for example a water inlet valve 6 in a to a water tap to be connected water supply line 7 in the Closed state controls, not shown, to an emptying nozzle 8 of a drain pan 9 drain pump to be connected starts and also activate warning devices can. There is a free one in the water supply line 7 Flow section 10 and a regeneration metering water tank designed as an overflow vessel 15, of which the water supply line 7 further into an ion exchange container used for water softening 11 and from there on via a line section 12 in leads a pipe socket 13. In the ion exchange container 11 opens out from a salt container, not shown upcoming brine line 14 for supplying regeneration brine. This Depending on the program, the salt container becomes the regeneration water dosing container 15 via a valve control device, not shown with a quantity of water dependent on the water hardness fed. The pipe socket 13 is part of the regeneration water metering container 15 and receiving the free flow path shallow water supply vessel 16, which has an essential Part of the height of the washing compartment 2 extends and in the area a side wall of the same is arranged. The lower area this water supply container 16 is designed as a collecting container 17 and provided with a steam trap chamber 18. The Pipe socket 13 is through an extending in the axial direction and divides the inner cross section diametrically dividing partition 19, whereby two channels 20, 21 are formed which are axial vertically from above into a line piece leading to the drain pan 9 22 open out. The one channel 20 is a connecting line into the steam boost chamber 18 or the collecting container 17 and the other channel 21 as part of the ion exchange container 11 led line section 12 formed. The Channel 20 opens from below through the bottom 22 of the collecting container 17 into the steam surge chamber 18, which is upward from a Cover wall 23 is completed, which in the area of the floor with at least one pressure equalization opening 24 and in the upper one Provide another pressure equalization opening 25 in the area is. The collecting container 17 also has an overflow wall an overflow edge 26, which the collecting container 17 opposite delimits a drain opening 27. The drain opening 27 opens freely off, so that in the event of a fault via the water supply line 7 continues to flow water through the channel 20 in the Collecting container 17 enters and over the overflow edge 26 and through the drain opening 27 into the leakage water trough 4 flows. The leakage water switch 5 then controls the drain pump in the operating state, the water inlet valve 6 in the Closed state and triggers a warning signal. That through the overflow edge 26 certain filling level is higher than a static one Filling level 28, which the liquid level with the connected to a circulation nozzle 29 on the water side Circulation pump in the correct operating condition in one Rinse cycle reached. On the other hand, if the circulation pump is switched on, it drops the fluid level to a dynamic indicated at 11 Level 30 from above the circulation pump connection 29 and the connecting piece 31 for the line piece 22 within the drain pan 9 is located. Furthermore, in the collecting container 17 in Flow direction in front of the overflow wall with the overflow edge 26 arranged in parallel offset baffle 32, which in Foot area has an overflow opening 33 opposite the bottom 22.

In this dishwasher, the water supply line is 7 within the water inlet tank 16 before the free flow path 10 widened, so that there is a flat at this point and wide vessel 38 results. After every water intake the vessel 38 completely filled with cold fresh water. in the subsequent filling process becomes the content of this vessel 38 transported into the rinsing container 2 and the vessel 38 fills up with fresh water.

An air duct 39 is located on the outside of the water inlet container 16 coupled, which is also in a flat and wide version is. This air channel 39 borders on the water inlet tank 16 directly in the area of the vessel 38, such that there is a large-area interface 40. In this air duct 39 during the drying phase of the wash program Air contained in the washing container. To do this, she will be at Ceiling wall 43 by means of an intake 44 and a blower 45 sucked in and via a ceiling air duct 39 'in the blown the water inlet tank adjacent air duct 39. On The interface 40 condenses the warm rinsing air accumulating liquid and hits the water inlet tank 16 facing inner wall 46 of the air duct 39 down. Because of the vertical arrangement of this inner wall 46 runs the condensation on the inner wall 46 and occurs together with the circulating rinsing air in the area of the lower basket 42 into the washing compartment 2 via an inlet connection 47 a. This inlet port can be closed by means of a closing device, e.g. a flap during the water-carrying rinsing phases be designed closable, in the present embodiment however, such a closure is not provided, there is a penetration of rinsing liquid during these rinsing phases due to the detergent-proof design of the air duct 39 is harmless. During the drying phase, the pumped out complete rinsing liquid from the device, so that too the air duct 39 is emptied.

There is between the washing container 2 and the air duct 39 a small air gap 48 to provide thermal insulation to the inside of the vessel 38 liquid present against the one heated in the rinsing phases To achieve rinse tank 2. This thermal insulation can by a thermal insulation agent, e.g. through a cotton fleece, yet increase.

A further increase in the condensation effect can be achieved if the air duct 39 is widened so that it additionally in the area of the regeneration water dosing tank 15 extends. In the chambers 15a to 15d arranged there there is also water, but not everyone Exchanged phase, but only at a time which the ion exchanger container 11 must be regenerated. This liquid is therefore usually at the beginning of the washing program and is therefore already through increased temperature of the washing compartment 2 also warmed somewhat. Because the temperature of this liquid but the rinse air this area of the water inlet tank can still fall significantly short 16 also serve as a condensation surface. The most favorable embodiment of the dishwasher according to the invention provides an air duct 39 which - for example in a meander shape - first on the regeneration water dosing tank 15 and then passed the vessel 38.

Claims (9)

Dishwasher with a washing compartment for a while a wash program to be cleaned and a water supply device for filling the rinsing container with Flushing liquid, the washing program from a Drying phase is completed, and with a quantity of water, which are arranged in an outside of the washing compartment Storage container is stocked, one in the rinsing container existing rinse tank air during the drying phase in a closed circuit from the washing container can be removed and then returned to the rinsing container is traceable and wherein the rinsing air outside the Rinsing tank with the amount of water in the storage tank is placed in a heat-exchanging contact, characterized in that that the reservoir is a line section the water supply device, which is from a water supply system is fed and into a free flow path flows. Dishwasher according to claim 1, characterized in that that the reservoir from a water inlet tank is included, the one or more chambers for each Includes a further amount of water. Dishwasher according to claim 2, characterized in that this at least one chamber is a vessel for storage a quantity of regeneration water, which is program-controlled and / or, as required, a brine container in the dishwasher is feedable. Dishwasher according to at least one of claims 1 to 3, characterized in that the free flow path is covered by the water inlet tank. Dishwasher according to at least one of claims 1 to 4, characterized in that the rinsing air in an air duct is guided, which at least partially to the Storage container is coupled flat. Dishwasher according to claim 5, characterized in that that the air duct in addition to the at least one Chamber for receiving the additional amount of water coupled areal is. Dishwasher according to claim 6, characterized in that that the rinsing tank air is guided in the air duct that they first attached to the at least one chamber for reception the further amount of water and then on the reservoir is led past. Dishwasher according to at least one of claims 2 to 7, characterized in that the reservoir opposite the rinsing container is thermally insulated. Dishwasher according to at least one of claims 1 to 8, characterized in that the moist air circulation is carried out by convection or by a blower.

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