DE102009044590A1 - Push loading drawer dishwasher, has rinsing drawer comprising rear wall, front wall, two side walls and base plate and providing volume space that serves as rinsing space, where one of walls of rinsing drawer is cooled - Google Patents

Abstract

The dishwasher (1) has a housing (2), and a rinsing drawer (3) comprising a rear wall (10), a front wall (7), two side walls (8, 9) and a base plate. The rinsing drawer provides a volume space (11) that serves as a rinsing space. One of the walls of the rinsing drawer is cooled. The cooled wall comprises an inner wall (13) and an outer wall (12), which are arranged at a distance from each other while leaving an intermediate space (14). The intermediate space is attached to a fluid inlet and a fluid outlet. A fluid-tight tank is inserted into the intermediate space.

Description

The The invention relates to a drawer dishwasher with a Housing and one of them, a back wall, a front wall, two side walls and a bottom plate having Spülschublade, the one as Spülraum serving volume space.

Dishwashers in general and drawer dishwashers in particular are well known in the art and have proven themselves in everyday practical use. Generic drawer dishwashers are for example from the WO 98/33426 and the EP 1 290 974 B1 known.

To Completion of the actual rinsing process, it is in the Dishwasher dishes to dry. For this serves the high residual temperature, which the dishes after completion the rinse process still has. When closed Door of the dishwasher evaporates the moisture and the water vapor condenses on the surfaces inside of the dishwasher, the first to cool. The condensate is pumped off with the remaining water. It is the Drying the better, the higher the self-heat of the dishes and the air temperature in the washing room, because the better the air can absorb the moisture.

Around To improve the drying process, it is known from the prior art become known to make an additional heating. For this purpose, for example, a tubular heater provided be. The disadvantage of this technique, however, is the increased Power consumption.

at another known from the prior art system an additional blower use that with the Water vapor saturated air over a cold water surface blowing at the bottom of the unit where the water condenses. This system also has the disadvantage of increased energy consumption at.

Also despite good drying remains in the interior of the dishwasher always a residual vapor that leaks when the dishwasher opens after the end of the program. This is considered disadvantageous why it is constantly trying to to reduce the amount of residual steam.

to Restdamp reduction is with automatic dishwashers Water heat exchangers known condensation drying become. This is done by the heat exchanger tank is filled with cold water, which results in the result in the dishwasher located water vapor on the cooled by the cold water heat exchanger tank can condense.

The passive drying using an outside of the device attached heat exchanger tank is in drawer dishwasher not possible, because the actual washing room, the contains water vapor after completion of the rinsing process, not through the case of the device but through the volume spaces provided by the rinse drawers, respectively is defined.

It nevertheless lies in the endeavor of the experts, also for drawer dishwashers To provide a passive drying to the broadest possible extent To be able to achieve reduction of the water vapor. It is Therefore, the object of the invention, a passive drying for To provide drawer dishwasher.

The Solution of this problem is inventively characterized Achieved that at least one of the walls of the rinsing drawer is designed coolable.

Of the Drawer dishwasher according to the invention is characterized by a Spülschublade over has at least one wall, which in turn is coolable is, wherein this wall is preferably the back wall the rinsing drawer is.

The at least one cool designed wall of the Spülschublade allows in the intended use case a condensation drying. There is condensation drying exclusively with regard to the dishwasher, which is defined by the Spülschublade, to which the heard cooled wall. So if a drawer dishwasher over has a plurality of Spülschubladen, so can per condensation drawer a condensation drying made regardless of condensation drying in the other rinse drawers.

The Coolable wall is according to the invention double-walled formed and has an inner wall on the one hand and an outer wall on the other. It is the inner wall defined by the Spülschublade Facing the dishwasher.

The Inner wall and the outer wall are spaced from each other formed, that is, leaving a gap spaced apart from each other. This space can be fluid-tight formed and connected to a fluid inlet and to a fluid outlet be. According to an alternative of the invention also be provided, in the intermediate space formed a fluid-tight Insert tank, which in turn to a fluid inlet and connected to a fluid drain.

The fluid inlet is preferably to a Fresh water line connected. Cooled fresh water can be introduced into the intermediate space via this, which then leads to cooling of the wall. The fluid drain preferably opens into the washing compartment. In these, after a completed drying process, the former cooling water can be drained, where then the same can take place.

in the Course of a proper condensation drying This heats up in the intermediate space of the coolable Wall water. Unless the following rinsing steps allow this, the heated cooling water in advantageously be reused, and preferably still in the heated state, creating an energy return he follows.

at the at least one coolable trained wall acts it is preferably the back wall of the dishwasher drawer. This is because the rear wall is constructive anyway a space between drawer interior and drawer exterior having. This gap can be as fresh water storage in above Find ways to use, without it unlike previously known drawer dishwasher to a reduction the Spülraum defined by the Spülschublade comes. The inside of the drawer acts on one with fresh water filled in space as a condensation surface, what makes it possible in the already described manner, after completion of the actual rinsing in the Confluent drawer still condensate water vapor to be able to. In addition, a filling the interval with fresh water at certain times in the Rinse cycle but also used to energy save as the water for the next water intake can be preheated. The inventive Design thus also allows a targeted energy return during the rinse cycle.

Although preferably the back wall of the flushing drawer is formed coolable, it is within the scope of the invention, other walls of the Spülschublade either alone or coolable in combination with other walls embody.

Further Features and advantages of the invention will become apparent from the following Description based on the figures. Show

1 in a schematic side view of a rinsing drawer of a drawer dishwasher according to the invention;

2 in schematic rear view of a rinsing drawer after 1 according to the viewing direction II-II 1 and

3 in a schematic plan view from above a Spülschublade according to a second embodiment.

1 leaves a schematic side view of a drawer dishwasher 1 recognize according to the invention. This has a housing 2 , the longitudinally displaceable flushing drawer 3 receives. In 1 is the drawer dishwasher 1 with rinsing drawer pulled out 3 shown.

The rinsing drawer 3 has a base plate 16 , a front wall 7 , two side walls 8th and 9 as well as a back wall 10 , These define the one of the drawer 3 enclosed volume space 11 that is the actual washroom. The drawer 3 is in a conventional manner by means of a running rail 5 in the longitudinal direction of the running rail 5 relatively movable relative to the housing 2 of the drawer dishwasher 1 educated. Below the rinsing drawer 3 are the operating aggregates 6 arranged over a supply 4 are connected, as in 1 is shown schematically.

The front wall 7 the rinsing drawer 3 has a handle 15 which can be grasped by a user to the rinsing drawer 3 to proceed in a conventional manner, that is from the housing 2 pull it out or into the case 2 retract.

The rinsing drawer 3 is equipped according to the invention with a coolable designed wall. According to the embodiment according to 1 is the back wall 10 designed as a coolable wall. This is achieved constructively in that an inner wall 13 on the one hand and an outer wall 12 provided on the other hand. Between these two walls 12 and 13 spaced apart from each other, a gap extends 14 , In this space 14 If necessary, a tank may be used to supply fresh water to and from an inlet 18 and at a drain 19 is connected, as can be seen from the illustration 2 results.

The feed 18 is on a water pipe 20 connected. About this can be water in the direction of the arrow 21 in the gap 14 between the outer wall 12 and the inner wall 13 the back wall 10 reach. About the process 19 can the water in the direction of the arrow 21 be discharged, it is preferred that the process 19 in the from the rinsing drawer 3 provided washroom 11 opens, where then a re and / or further use of the water can take place. Both the Intake 18 as well as the process 19 Each has a valve 17 , For example in the form of a solenoid valve, which is a demand-based blocking or opening of both the inlet 18 as well as the process 19 allowed.

3 shows an alternative embodiment, according to which a circulating water tank is provided. After this construction, all the walls of the flushing drawer 3 that is the front wall 7 , the two side walls 8th and 9 as well as the back wall 10 each formed as a double-walled walls, which receive a water tank with their respective space.

By means of the invention at least one cooled wall formed a condensation surface is created, which makes it possible at the end of the actual rinsing process in the washing compartment 11 to be able to passively dry the steam present by condensation. In addition, through targeted filling of the water tank during a wash program, energy recovery can be achieved by deliberately preheating water which is still needed in further wash program phases.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• WO 98/33426 [0002]
• - EP 1290974 B1 [0002]

Claims (7)

Drawer dishwasher ( 1 ) with a housing ( 2 ) and one of them, a back wall ( 10 ), a front wall ( 7 ), two side walls ( 8th . 9 ) and a bottom plate ( 16 ) having Spülschublade ( 3 ), which serve as a washing space volume space ( 11 ), characterized in that at least one of the walls ( 7 . 8th . 9 . 10 ) of the rinsing drawer ( 3 ) is formed coolable. Drawer dishwasher ( 1 ) according to claim 1, characterized in that the coolable wall ( 7 . 8th . 9 . 10 ) is double-walled and an inner wall ( 13 ) and an outer wall ( 12 ) having. Drawer dishwasher ( 1 ) according to claim 2, characterized in that the inner wall ( 13 ) and the outer wall ( 12 ) leaving a gap ( 14 ) are spaced from each other. Drawer dishwasher ( 1 ) according to claim 3, characterized in that the intermediate space ( 14 ) formed fluid-tight and to a fluid inlet ( 18 ) and to a fluid outlet ( 19 ) connected. Drawer dishwasher ( 1 ) according to claim 3, characterized in that in the intermediate space ( 14 ) a fluid-tight tank is used, which is connected to a fluid inlet ( 18 ) and to a fluid outlet ( 19 ) connected. Drawer dishwasher ( 1 ) according to claim 4 or 5, characterized in that the fluid feed ( 18 ) is connected to a fresh water line connectable. Drawer dishwasher ( 1 ) according to claim 4, 5 or 6, characterized in that the fluid outlet ( 19 ) in the washing room ( 11 ) opens.