DE202019102824U1 - dishwasher - Google Patents

Abstract

Dishwasher (1) comprising a housing (2) with a drain (3) and a basket (4) for washing the dishes (5) arranged in the housing (2), a rotatable spray arm (6) with spray nozzles (7) for spraying the dishes to be washed (5), a supply line (8) for rinsing water and a reservoir (9) for a detergent, characterized in that the reservoir (9) of the supply line (8) is associated.

Description

The invention relates to a dishwasher comprising a housing with a drain and a basket arranged in the housing for the dishes to be washed, a rotatable spray arm with spray nozzles for spraying the dishes to be washed, a supply line for rinse water and a reservoir for a detergent.

Dishes such as plates and cups, cutlery, kitchen utensils or other items are cleaned with a dishwasher. For this purpose, the dishwasher has an openable housing with a basket disposed therein, in which the dishes to be washed and the like are inserted. Furthermore, the dishwasher comprises spray nozzles, which are usually arranged on a rotatable spray arm to direct water jets on the dishes to be washed. For supplying rinse water is a supply line, which is for example firmly connected to a water connection in an apartment. The spray nozzles are aligned on the spray arm so that both the spraying of the dishes takes place and the rotation of the spray arm is caused by the repulsive force of the sprayed rinse water. Furthermore, the dishwasher may include a heating device for the rinse water and a controller for the actual rinsing process. A water pressure of the rinse water can also be increased with an electric pump. Furthermore, a sequence is optionally provided with a further pump on the housing to dissipate the rinse water after flushing. In addition, a rinsing agent reservoir is usually disposed within the housing to increase the cleaning performance by releasing a rinsing agent.

Especially for small households or for mobile use, no-current dishwashers are known. In these, a supply line for the rinse water is connected to a faucet, for example, in a kitchen and the spray nozzles are subjected to normal household water pressure. If this electroless dishwasher is parked, for example, on a drainage surface of a household sink, the running rinse water can drain into the household sink. Such a dishwasher is out of the US 4 444 213 A1 known.

Furthermore, the describes US Pat. No. 3,469,586 A1 an electroless dishwasher with housing and a rotatable spray arm, in addition to the outside of the housing, a reservoir for a liquid detergent is arranged, which is added via a separate detergent line to the rinse water.

The invention has for its object to provide a dishwasher of the type mentioned, which is easy to use and in which an automatic dosage of the added detergent takes place.

According to the invention the object is achieved by the features of claim 1.

The essence of the invention is that a dishwasher in a conventional manner, a housing with a basket arranged therein for the dishes to be washed, a supply line for rinse water exiting at spray nozzles on a rotatable spray arm, and a drain for the rinse water. Now, however, the reservoir for the rinsing water zuzusetzende detergent is no longer separately arranged on the housing of the dishwasher but assigned directly to the supply line for the rinse water. It may be a container which is substantially completely traversed, for example, by the rinsing water, or the rinsing agent is fed directly from the container to the supply line or to the rinsing water. As a result, the dishwasher, or its housing, with, for example, the rotatable spray arms with spray nozzles already supplied to the mixture of rinse water and detergent. Mixing on or in the housing is eliminated and the dishwasher can be fed directly to the desired dosage.

The fact that the reservoir for detergent is already assigned to the supply line, also enters an intimate mixing of detergent and rinse water to improve the cleaning performance. In this case, the reservoir and the supply line can be designed such that a suitable mixing ratio is achieved. In addition, a simple refilling of the reservoir can be done because the supply line for the rinse water with the associated reservoir is freely accessible.

In particular, the invention relates to an electroless dishwasher, which can be operated without connection to a power grid. For this purpose, the supply line is connected to a pressurized water connection, such as a hot water connection in a kitchen of a dwelling. Due to the water pressure, the rinsing water is sprayed onto the dishes to be cleaned by the spray nozzles, whereby spray arms can be rotated. In the context of the invention is included in that the dishwasher consists only of a housing with spray nozzles and a supply line, the housing is placed, for example on a crockery basket. The supply line is connected to a tap. This faucet is turned on and sprayed the rinse water from the spray nozzles on the dishes in the dish rack to the dishes in the dish rack to clean. The flushing water flowing down from the housing which is open at the bottom is supplied, for example, via a drainage surface of a household sink to the outflow of the domestic sink or of the sink. Closing the faucet stops the flushing process. This offers the advantage that no current-carrying elements, such as heating device, pump or the like, are necessary and an electrical short circuit is excluded.

It is understood that in the housing and one or more windows can be provided to check the cleanliness of the dishes to be washed.

The subclaims represent advantageous embodiments of the invention.

According to a first embodiment, the supply line with an adapter to a household tap can be connected. Depending on the design, the adapter can be screwed onto a faucet, for example, in order to be able to use the faucet in the usual way when the dishwasher is not in use. In particular, the adapter comprises a two-way cock. This is operated manually, for example, and preferably has a perlator for normal use of the faucet and a connection for the supply line of the dishwasher.

According to a development, the storage container for receiving solid detergent, for example in the form of so-called Waschmitteltabs or parts thereof or detergent powder furnished. For this he has an openable and waterproof flap to introduce the solid detergent. In operation, the reservoir is traversed either by the entire flushing agent or at least of a part thereof via a bypass line. The rinse water dissolves the solid detergent and continues to the dishwasher. Here, a dosage can be done by regulating the flow rate.

Alternatively, the reservoir may be adapted to receive a liquid rinsing agent, in which case the reservoir is provided with a closable and watertight filling opening for the rinsing agent. In particular, it is equipped with a Venturi injector. This is based on the Venturi effect wherein in a suitably designed nozzle, a negative pressure prevails transversely to the flow direction of the rinsing water, which sucks the liquid detergent and mixing with the rinse water takes place. Here, a metering device may be provided in the form of a flow restriction for metering the flushing agent. In particular, thus, a conventional rinsing or cleaning agent can be used, which is not marketed for special use with dishwashers and is usually cheaper.

Preferably, the dishwasher comprises two rotatable spray arms with spray nozzles, so to speak to clean the dishes from above and below. In principle, however, the spray arms can also rotate about horizontal axes of rotation and / or further spray nozzles are provided in the housing.

Conveniently, a check valve is provided on the supply line, with which the feed of rinse water to the dishwasher can also be prevented separately from the above-mentioned adapter with two-way cock. Thus, for example, in case of a defect of the dishwasher, or of its housing, the escape of rinse water can be prevented quickly.

According to a further embodiment, the dishwasher is equipped with a controller. With this control, for example, the above-mentioned check valve can be opened and closed in order to be able to start a rinsing process with a preset and selectable time duration, preferably via a timer, at a certain point in time. In this case, the control is designed in particular for operation with a low voltage, for example twelve volts. This reduces the risk of a life-threatening short circuit due to leakage and leakage of rinse water. Also, the controller, or their power supply, with a transformer for a low voltage and spatially separated from the dishwasher and supply line can be arranged.

Of course, it is possible to store the basket movable. For example, the basket can be set in motion by means of the water duct or a separate drive which is present via the supply line, as a result of which the cleaning performance can be increased.

It is preferred that the two spray arms are independently controllable. For example, first a lower spray arm can be controlled. This means that water is first supplied to the lower spray arm via a correspondingly configured valve, which may be formed integrally with the aforementioned check valve, and the crockery is, so to speak, first cleaned from below. Subsequently, a switchover and the upper spray arm is applied with rinse water to clean the dishes. In principle, an intermittent or simultaneous control of the spray arms can also take place in opposite directions, or different cleaning programs, for example with different durations, can be selected. Due to the independent control of the Spray arms can reduce the pressure loss compared to the simultaneous operation of the spray arms.

For this purpose, the controller may include one or more timers. Here, a timer is a preferably electronically formed clock to regulate, for example, the entire duration of the rinsing process, or the duration of the control of the upper and / or lower spray arm.

It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the respectively specified combination but also in other combinations. The scope of the invention is defined only by the claims.

The invention will be explained in more detail below with reference to an embodiment with reference to the accompanying drawings.

The sole figure of the drawing shows a dishwasher in a schematic representation.

The 1 shows a purely schematic view of a dishwasher 1 , This includes a housing 2 made of metal and / or plastic, which may also be thermally insulated. In the case 2 It is also possible to provide a viewing window for checking a rinsing process. Furthermore, the housing 2 For example, include an openable door or removable hood to dirty dishes 5 in a basket 4 in the case 2 insert, or the clean dishes 5 refer to. The dishes 5 is represented here symbolically as a plate, but it can be cleaned any objects in itself.

A supply line 8th for preferably hot rinse water is by means of an adapter 10 can be connected to a household tap. The supply line 8th is formed for example by a flexible plastic tube. This can be the adapter 10 for example, be screwed onto the faucet and include a two-way cock to use the faucet in a conventional manner with an outlet with an aerator. If the two-way cock is switched, the hot water selected via a mixer tap is sent to the dishwasher 1 fed.

About leads 8a . 8b in the form of hoses or pipes is two rotatable spray arms 6a . 6b each fed the rinse water and occurs at spray nozzles 7 from the spray arms 6a . 6b out. Here are the spray nozzles 7 so on the spray arms 6a . 6b arranged that by the recoil of the rinsing water, the spray arms 6a . 6b each be rotated, for example, in opposite directions and the rinse water on the dishes 5 in the basket 4 is sprayed.

To discharge the rinse water is a drain 3 For example, in the form of a pipe, pipe socket or hose to supply the rinse water a household sink and its drain. In principle, the housing could 2 but also be designed to be open at the bottom and the rinse water to be removed via a drainage surface of a household sink.

Furthermore, the supply line 8th a storage container 9 assigned for a detergent. It may be a solid or liquid detergent and the rinse water flows through the reservoir 9 either completely or, in particular, in the case of a liquid rinsing agent, this is achieved by means of the Venturi effect from a storage container 9 on the supply line 8th aspirated and mixed with the rinse water. The storage tank 9 is spatially from the housing 2 disconnected from the supply line 8th assigned to be freely accessible.

This dishwasher 1 can be operated without electrical power supply. It only has to be connected to a water connection.

To increase the comfort of use is still a check valve 11 in the supply line 8th intended. This can be designed in a simple manner as a manually operable stopcock. However, preferred is the check valve 11 via a controller 12 controllable. For example, the controller 12 with a button 14 switched on and the check valve 11 , preferably a solenoid valve, opened. By means of a first timer 13a , In principle, a preferably electronically formed clock, the entire duration of the rinsing process is controlled and with time the check valve 11 closed again. By means of a second timer 13b can be the supply of rinse water through the supply lines 8a . 8b to the two spray arms 6a . 6b even after a set or desired time to be changed, for example, the dishes 5 in the basket 4 first clean from below and then from above.

With the button 14 a rinsing process can also be aborted, if desired. Furthermore, the controller 12 be set up to run different rinsing programs and / or to start at a desired time.

LIST OF REFERENCE NUMBERS

1.

dishwasher

Second

casing

Third

procedure

4th

basket

5th

dishes

6th

spray arm

7th

spray nozzle

8th.

supply

9th

reservoir

10th

adapter

11th

check valve

12th

control

13th

timer

14th

button

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 4444213 A1 [0003]
• US Pat. No. 3,496,586 A1 [0004]

Claims (12)

Dishwasher (1) comprising a housing (2) with a drain (3) and a basket (4) for washing the dishes (5) arranged in the housing (2), a rotatable spray arm (6) with spray nozzles (7) for spraying the dishes to be washed (5), a supply line (8) for rinsing water and a reservoir (9) for a detergent, characterized in that the reservoir (9) of the supply line (8) is associated. Dishwasher (1) after Claim 1 , characterized in that the supply line (8) with an adapter (10) can be connected to a household tap Dishwasher (1) after Claim 2 , characterized in that, the adapter (10) comprises a two-way cock. Dishwasher (1) after Claim 1 , characterized in that the storage container (9) is adapted to receive solid detergent. Dishwasher (1) after Claim 1 , characterized in that the storage container (9) is adapted to receive liquid detergent. Dishwasher (1) after Claim 5 , characterized in that the reservoir (9) is equipped with a Venturi injector. Dishwasher (1) according to one of Claims 1 to 6 , characterized in that the dishwasher (1) is equipped with two rotatable spray arms (6a, 6b). Dishwasher (1) after Claim 7 , characterized in that the spray arms (6a, 6b) are separately controllable. Dishwasher (1) according to one of Claims 1 to 8th , characterized in that in the supply line (8) a check valve (11) is arranged. Dishwasher (1) according to one of Claims 1 to 9 , characterized in that the basket (4) is movably mounted in the dishwasher (1). Dishwasher (1) according to one of Claims 1 to 10 , characterized in that the dishwasher (1) is equipped with a controller (12). Dishwasher (1) after Claim 11 , characterized in that the controller (12) comprises at least one timer (13).

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