EA018160B1 - Wall-mounted dishwasher - Google Patents

Abstract

A wall-mounted dishwasher comprises a casing (2) in turn comprising a bottom opening (3); a carriage (4) which can be pulled out of the casing (2) through the bottom opening (3) and which is mobile between a first configuration and a second configuration, the carriage (4) comprising means (5) for positioning the dishes to be washed and which are, in the first configuration, at least partly inside, and in the second configuration, outside the casing (2); at least a first and a second duct (6, 7) for conveying a washing liquid, one of the two ducts (6, 7) being immovable relative to at least one fixed portion of the casing (2) and the other being integral with the carriage (4). The first duct (6) comprises a first end stretch (61) which, at least when the carriage (4) is in the first configuration, faces a section (75) defined by the second duct (7) for the passage of the washing liquid, thus allowing the washing liquid to be conveyed between the first and the second duct (6, 7).

Description

The invention relates to a wall-mounted dishwasher, which can be used, for example, in kitchens of residential buildings.

State of the art

Known wall-mounted dishwashers comprising an external housing attached to a wall and a movable carrier device that can slide vertically when exiting the external housing and entering it. The movable carrier device comprises means for accommodating the dishes to be washed. Tap water is supplied to the movable carrier via a hose of an appropriate length. Due to its flexibility, the hose adapts to the movements of the carrier, providing water from the water supply to the carrier, including when washing dishes, even when the carrier is pulled out of the outer casing.

Dishwashers of this type have their drawbacks.

In particular, during the movement of the carrier, the hose undergoes twisting and deformation, which usually accelerates its wear and failure or may lead to its disconnection. In addition, when moving, sharp bends of the hose can also occur, which prevents the normal passage of water through it.

Also known is a dishwasher described in document DR 2006043123.

Disclosure of invention

The objective of the invention is to overcome the above disadvantages through the use of a wall-mounted dishwasher equipped with an advanced system for supplying and draining water.

These and other tasks, which will become more clear from the following description, are solved in a dishwasher, the structural and functional features of which are described in the independent claims. Alternative embodiments of the dishwasher are presented in the dependent claims.

The invention is illustrated by drawings, which depict a preferred, but not limiting variant of its implementation.

Brief Description of the Drawings

The invention is illustrated by drawings, which show:

in FIG. 1 is a schematic illustration of a wall-mounted dishwasher according to the invention in a first configuration, a front view in which some details are not shown;

in FIG. 2 - the same in the second configuration;

in FIG. 3 is a side view of a dishwasher according to the invention;

in FIG. 4 - structural elements of a wall-mounted dishwasher;

in FIG. 5 and 6 show a dishwasher according to the invention, the individual hidden parts of which are indicated by dashed lines, perspective and front views, respectively;

in FIG. 7 is a section along AA in FIG. 6;

in FIG. 8 is a section along BB in FIG. 6;

in FIG. 9 and 10 show a wall-mounted dishwasher in two different configurations, with FIG. 9 shows a section along CC in FIG. 6;

in FIG. 11a-11e show the sequence of steps during the transition of the dishwasher according to the invention from the first configuration to the second.

The implementation of the invention

The wall-mounted dishwasher 1 comprises a housing 2 with a lower opening 3 and a carrier 4 configured to extend from the housing 2 through the lower opening 3 and move between the first and second positions.

The carrier 4 comprises means 5 for accommodating the dishes to be washed. Means 5 in the first position, at least partially, are located inside the housing 2, and in the second position, outside. In particular, in the first position, the means 5 are completely retracted into the housing 2.

The dishwasher 1 comprises at least a first and a second pipe 6 and 7 for supplying a washing liquid, while one of the two pipes 6 and 7 is fixedly mounted relative to at least one fixed part of the housing 2, and the other is an integral part of the carrier 4 .

The first conduit 6 comprises a first end portion 61, which, at least when the carrier 4 is in the first position, faces toward a portion 75 of the second conduit 7 for passage of the washing liquid. Thus, the washing liquid can pass between the first and second pipelines 6 and 7. In particular, there are no intermediate pipelines between the first and second pipelines 6 and 7. The first and second pipelines 6 and 7 are rigid.

The dishwasher 1 comprises a washing tub 700. The carrier 4 comprises a closure 8, which in the first position completely covers the lower opening 3. The washing cycle can be carried out in the first position (Figs. 1, 3, 5 and 11a). The closure element 8 forms a part of the base 80 from the bottom of the carrier 4. Also, a drain tank for washing liquid is formed in the base 80. The closure element 8, together with the housing 2, seals the wash tub 700, preventing

- 1 018160 leakage of washing liquid. Preferably, the lower parts of the substantially vertical walls forming part of the body 2 and defining the sides of the washing tub 700 are inclined inside the washing tub 700 (this embodiment is not shown). This simplifies the collection of water in the lower central part of the tank 700, where the drain tank is located, and helps to prevent water leakage from the dishwasher 1. The closure element 8 comprises an upwardly extending convex protrusion 81. When the carrier 4 is in the first position, the protrusion 81 is inserted into a mating groove 82 formed in a part of the housing 2 facing toward the closure member 8 of the carrier 4 for additional protection against leakage of the washing liquid. For additional sealing between the closing element 8 and the housing 2, a seal made of rubber or other similar material is used. In the second position, the closing element 8 is moved away from the lower opening 3 (Fig. 2, 10 and 11e).

The first and second positions of the carrier 4 correspond to two end positions when moving the carrier 4.

The dishwasher 1 comprises an engaging means 83 for holding the carrier 4 after it reaches the end point of movement in the first position. Preferably, the engaging means 83 are of a mechanical type and engage with the carrier 4 when it reaches its first position. As a result, the carrier device 4 is firmly held in the first position. In order for the carrier 4 to move from the first position to the second, the engaging means 83 can be disengaged from the carrier 4.

In FIG. 4, 9 and 10 illustrate an exemplary embodiment of the engaging means 83. The engaging means 83 comprise a main body 830 rotatably connected to the housing 2 by a pin 831. In the first section 834 of the main body 830 there is a recess 832, which, when the carrier 4 is located in the first position holds the insert 833 directly of the supporting device 4. The main part 830 contains a second section 835 located opposite the first section 834 relative to the pin 831. The second section 835 is connected to the fixed point 836 of the housing 2 by other means 837. When the carrier 4 transitions from the second position to the first, the elastic means 837 are initially compressed as much as possible and then returned to a less compressed state. In particular, the main body 830 is shown in FIG. 4, where its two end positions are indicated by solid lines. The solid line also shows the main part 830 in the position when it is engaged with the carrier 4 (in this case, the main part 830 is in the same position as in Fig. 10, when the carrier 4 is disengaged with the engaging means 83). Dashed lines show the main part 830 when the carrier 4 is in the first position (FIG. 9). When the carrier device 4 is in the first position, the weight of the carrier device 4 does not allow to overcome the force exerted by elastic means 837, therefore, the carrier device 4 is held in the first position. Thus, to move the carrier device 4 from the first position to the second, it is necessary to apply an additional force sufficient to overcome the resistance of the elastic means 837.

When the carrier device 4 is pulled out of the housing 2, the carrier device 4 is moved from the initial extreme position corresponding to the first position to the final position corresponding to the second position. When the carrier device 4 is pushed back into the housing 2, the carrier device 4, on the contrary, moves from the end limit position corresponding to the second position to the initial limit position corresponding to the first position.

The second conduit 7 comprises a second end portion 71, which, at least when the carrier 4 is in the first position, faces toward the first end portion 61.

When the carrier 4 is in the second position, the first and second end portions 61 and 71 are spaced apart from each other more than in the first position.

The second end portion 71 comprises a funnel 72, the cross section of which tapers in the direction of flow of the washing liquid, i.e. funnel 72 is a tapering component. In another embodiment, the cross section of the funnel 72 may taper off immediately.

Regarding the direction of flow of the washing liquid, the second end portion 71 contains a deflecting element 73 downstream of the funnel 72, located at the point where the cross section increases in the direction of the outgoing flow of the washing liquid. The diverting element 73 increases the throughput of the second end portion 71.

Preferably, the first end portion 61 is in the form of a nozzle 62.

The nozzle 62 is located along the first axis 620. The funnel 72 is located along the second axis 720. The first and second axles 620 and 720 are located vertically. When the carrier 4 is in the first position, the axes along which the first and second end portions 61, 71 are substantially aligned.

In the first position, the first and second axles 620, 720 also coincide. Where the nozzle 62 and funnel 72 form part of the detergent supply means 871, the vertical arrangement of the axles 620 and 720 facilitates the passage of the detergent fluid by gravity from the first end portion 61 to the second end portion 71.

- 2 018160

Preferably, the first and second end portions 61 and 71 are rigid.

It is desirable that inside the washing tank 700 there is a rotating sprayer 76 having nozzles that distribute jets of washing liquid in the washing tank 700, thereby facilitating the washing of dishes. The sprayer 76 may be of the traditional type or the type described in I8 5579789. It is preferable that the carrier 4 of the dishwasher along the detergent supply means 871 to the washing tub 700 contains a softener 84 for dishwashers, which reduces the rigidity of the washing liquid. A filter 84 is located at the bottom of the washing tank 700. Downstream of the filter 84, there is a channel 85 for supplying washing liquid to the spray gun 76. A first washing liquid pump 86 is installed in the channel 85 for supplying washing liquid to the spray 76. Downstream of the filter 84 are also located detergent draining means 870 that comprise a second drainage pump 87. The first and / or second pumps 86 and 87 are part of the pumping means.

Alternatively, instead of the first and second pumps 86 and 87, a single pump may be used. In this case, the only pipe in which a single pump is installed is located downstream of the filter 84 (in the direction of the washing liquid outlet). Downstream of this pump is an electric flow deflection valve. Depending on the design, the electric valve deflects the washing liquid either into the channel 85, through which the washing liquid enters the sprayer 76, or into the means 870 for draining the washing liquid.

When the carrier 4 is in the first position, the element 8 covering the lower opening 3, together with the housing 2, defines the boundaries of the washing tank 700.

When the carrier 4 is in the first position, the joint 63 between the first and second pipelines 6 and 7 is located in the washing tank 700, and all the washing liquid flowing through it when passing between the first and second pipelines 6, 7 is collected at the bottom 70 of the washing tank 700.

In the pipeline, which is part of the fixed part of the housing 2 and forming part of the means 871 for supplying washing liquid (for example, pipe 6 in Figs. 1 and 2), an electric valve 838 is installed to regulate the flow of washing liquid. A non-return valve 839 is installed in the pipeline, which is an integral part of the fixed part of the housing 2 and forms part of the detergent draining means 870 (for example, the pipeline 9a in FIGS. 1 and 2), which prevents the backflow of liquid (for clarity, the electric valve 838 and the non-return valve 839 shown only in Fig. 3).

Next, embodiments of the invention depicted in FIG. 1 and 2.

The first and second pipelines 6 and 7 form part of the means 871 for supplying washing liquid to the washing tank 700. The first pipe 6 is located upstream of the second pipe 7 and is an integral part of the fixed part of the housing 2. The second pipe 7 is an integral part of the carrier 4.

The dishwasher 1 comprises a third and fourth conduits 9a, 10a forming part of the detergent draining means 870. The third conduit 9a is installed in the fixed part of the housing 2, and the fourth conduit 10a is an integral part of the carrier 4. The third conduit 9a contains a third end portion 90a, which, at least when the carrier 4 is in the first position, faces toward section 77 the fourth pipeline 10a for passing the washing liquid, providing its passage from the third pipeline 9a to the fourth pipeline 10a. The third and fourth pipes 9a and 10a are also made rigid. In the first position, the third and fourth pipelines 9a and 10a are in contact with each other, providing a drain of the washing liquid. In the second position, the third and fourth pipelines 9a and 10a are located at a distance from each other. In the first position, the contact area between the third and fourth pipelines 9a and 10a is located inside the washing tank 700. In this case, all the washing liquid resulting from the passage between the third and fourth pipelines 9a and 10a is collected at the bottom 70 of the washing tank 700.

In the first position, the first and second pipelines 6 and 7 are located at a distance from each other, i.e. in the first position, the first end portion 61 and the second end portion 71 are not in contact with each other. The minimum distance between them is preferably about 20 mm. This minimum distance is preferably measured vertically. The specified minimum distance is of great importance, since in the event of a pressure drop in the main water supply, air is sucked into the first pipe 6, and the mixture of air and detergent does not pass back from the second pipe 7 into the first pipe 6. Thus, the first and second end sections 61 and 71 are not inserted into each other, with the first end portion 61 being completely outside the second end portion 71.

Preferably, in the first position, the third and fourth pipes 9a and 10a are located next to each other, forming a single channel. If necessary, a seal may be formed between the third and fourth conduits 9a and 10a to increase the tightness. However, in this case, when moving from the second position to the first, more effort will be required to overcome the elastic resistance of the seal. Preferably, the first end portion 61 of the first pipe 6 has a perimeter groove for installing a seal. In an alternative embodiment, the third and fourth conduits 9a and 10a may comprise quick disconnect means

- 3 018160 pairings for their connection with each other (for example, like those that are offered on the market under the brand name WESTIZ Zepek 21KA).

As shown by way of example in FIG. 3, the housing 2 comprises in the upper part a control hatch 11 for access to the technical compartment 110 located above the washing tub 700 and designed to receive plumbing connections and / or an electronic circuit board for controlling the dishwasher and / or electrical connections and / or a safety lock preventing the beginning of the washing cycle, if the carrier 4 is not raised enough to provide a waterproof seal to the washing tank 700 and fluid communication of the first and second pipelines. Preferably, after opening the compartment 110, the user gains access to the engaging means 83 that lock the carrier 4 in place after it reaches the limit position in the first position. Preferably, the technical compartment 110 is located above the washing tub 700 so as to reduce the lateral dimensions of the dishwasher 1. The inspection hatch 11 may be a hinged or extendable type. The location of the hatch 11 in the upper part of the dishwasher allows you to hide it from the user, who is usually located below. Thus, the control door 11 can be used for electrical and / or water connections, as well as for maintenance.

As shown in FIG. 3, there is a space 111 between the washing tub 700 and the top 112 of the dishwasher 1. The space 111 may comprise a technical compartment 110. The space 111 outside the technical compartment 110 may be used to accommodate additional devices, such as, for example, an electric motor for moving the carrier 4 , a drying fan, a fixed spray gun for wetting dishes from above, etc. For better clarity, only a part of the detergent supply means 871 and the drain means 870 are shown in the technical compartment.

In a non-limiting embodiment, the height of space 111 is about 15 cm; the height of the body 2 bounding the sides of the wash tub 700 is about 37 cm; the height of the closure member 8 protruding from the housing 2 when the carrier 4 is in the limit position in the first position is about 8 cm.

Preferably, the dishwasher 1 comprises means for supplying power to electrical components located in the carrier 4, such as pumps, an electronic user interface, and the like.

In a first embodiment of the invention, the dishwasher may comprise an electric wire with means for winding it. In this case, the length of the wire in the unwound state should be sufficient to ensure connection with the carrier device 4. Of course, the length of the unwound wire changes when the carrier device 4 is moved between the first and second positions.

In a second embodiment of the invention, the wire may be a predetermined length sufficient to be connected to the carrier 4 in the first, second and intermediate positions.

In another embodiment, a first connector may be integrated in the carrier 4, and the second connector may be fixedly mounted in the housing 2. The first and second connectors provide contact closure and opening. In particular, in the first position (when the pumps are running), the first and second connectors are in contact. In the second position, the first and second connectors are spaced from each other, breaking the electrical contact. In this case, in the second position, the user interface located in the carrier device 4 is powered by a battery, preferably a rechargeable one, or a photovoltaic panel (if necessary, the photovoltaic panel can be connected to the battery described in EP 727823).

Another embodiment of means for supplying power to electrical components integrated in the carrier device 4 is described below.

To reduce the description of the operation of a wall-mounted dishwasher, an embodiment of the invention shown in FIG. 1 and 2. In the process, when the carrier 4 is in the first position, the washing liquid is taken from the main water supply and supplied to the first pipe 6, and from there through the junction 63 to the second pipe 7. Rotating sprayer 76 spray the washing liquid under pressure in the washing tank 700 in such a way as to wash the dishes installed in the means 5. The liquid used during washing is collected at the bottom of the tank 700 where the drain tank is located. The drained washing liquid is taken from the tank through the fourth pipe 10a, and then fed into the third pipe 9a for discharge into the sewer.

When lowering the carrier device 4 from the first position to the second locking device, it prevents the additional supply of water from the water supply, while the supply and discharge of water to the sewer are carried out only when the carrier device 4 is in the first position.

As shown by way of example in FIG. 11a-11e, when moving from the first position to the second carrier device 4, it follows a path having horizontal and vertical components. Preferably, movements along the horizontal and vertical components occur simultaneously. In particular, the dishwasher 1 comprises means 89 for moving the carrier device

4. These means 89 comprise longitudinal guides 88 along which the carrier device 4 slides. The guides 88 are fixedly mounted relative to at least one fixed part

- 4 018160 of the housing 2. The housing 2 comprises a front wall 21 located opposite the vertical mounting plane outside the dishwasher 1, while in the process of transferring the carrier 4 from the first position to the second carrier 4 is moved from the installation plane (which is imaginary and therefore not pictured). To facilitate the transition from the second position to the first and mitigate the transition from the first position to the second supporting device is associated with a counterweight. Preferably, the carrier device 4 is moved by an electric motor. Alternatively, a handle 91 may be located on the front side of the dishwasher to disengage the carrier 4 and facilitate its movement.

In the embodiment of FIG. 3, 5-10, the carrier moving means 89 comprise a pivot-link four link, preferably a pivot parallelogram. The hinged-link four-link includes a frame 891, which is an integral part of the housing 2 and connecting the two hinges, and a rod 892, which is an integral part of the supporting device 4.

The pivot-link four-link also contains two levers 893 connecting the rod 892 and the frame 891. The frame of the pivot-link four-link is its fixed part, and the rod 892 is a movable element located opposite the frame and connected to it by two levers. Preferably, a shock absorber 79 is located between the housing 2 and the articulated lever four-link (more precisely, the shock absorber 79 should be located between the housing 2 and at least one of the two levers 893 of the articulated four-link). This prevents a sharp fall of the carrier device 4.

In the exemplary embodiment of FIG. 3, 5-7, 10-12, the power supplies of the electrical components that are an integral part of the carrier device 4 comprise an electric cable 894 of constant length, which is passed inside one of the two levers 893 of the means 89 for moving. This electrical cable 894 (indicated by the dashed line in FIG. 3) connects electrical components located in the carrier 4 to a power source located outside the carrier 4. This particular embodiment of the invention eliminates the use of coils with wire and dangling cables inside washing tank 700.

The invention has important advantages.

First of all, it allows you to connect the carrier with a water source, providing maximum freedom of movement of the carrier.

Another important advantage is to increase the service life of the water connections in the carrier, which eliminates the risk of rupture and reduces wear on the pipes for supplying washing liquid.

You must understand that the described invention allows the introduction of various changes and improvements without going beyond its scope.

In addition, any parts can be replaced by other technically equivalent components.

In practice, any materials used, as well as dimensions, can be changed to suit specific needs.

Claims (5)

1. A wall-mounted dishwasher comprising a housing (2) with a lower opening (3); a carrier device (4) configured to extend from the housing (2) through the lower opening (3) and move between the first and second end positions, the carrier device (4) comprising means (5) for accommodating the dishwashing to be washed, which is in the first position, at least partially, is located inside the housing (2), and in the second position of this device (4) outside the housing (2), while the supporting device (4) contains a closing element (8), which in the first position completely covers the bottom opening (3), allowing wasp the washing cycle in the first position, and in the second position, the closing element (8) is located at a distance from the lower opening (3); a washing tank (700), in this case, when the carrier (4) is in the first position, the closing element (8) together with the housing (2) defines a washing tank (700); at least the first and second pipelines (6, 7) for supplying the washing liquid to the washing tank (700) with ensuring its subsequent supply from the washing tank (700) through the feed pump (86) and the sprayer (74) into the dishwashing zone, moreover, the first (6) of the pipelines is fixedly mounted relative to at least one fixed part of the housing (2), and the second (7) is an integral part of the supporting device (4); means for blocking the supply of washing liquid to the first pipe (6) when the carrier (4) is not in the first position; - 5 018160 pipelines (9a, 10a) for draining into the sewer the spent washing liquid from the washing tank through the drain pump (87); wherein the first pipe (6) has a first end portion (61), which, at least when the carrier (4) is in the first position, faces the end portion (75) of the second pipe (7) for passing the washing liquid, thereby ensuring the passage of washing liquid from the first pipeline (6) into the second pipeline (7), and is located at a distance from this end section (75) of the second pipeline (7) to ensure air is sucked into the first pipeline (6) and thereby prevent the return passage of the mixture from the cart ear and detergent from the second conduit (7) in the first conduit (6). 2. The dishwasher according to claim 1, in which, when the carrier (4) is in the first position, the joint (63) between the first and second pipelines (6, 7) is in the washing tank (700), so that everything that follows passing between the first and second pipelines (6, 7), the washing liquid is collected at the bottom (70) of the washing tank (700). 3. Dishwasher according to any one of paragraphs. 1 or 2, in which in the first position the ends of the pipelines (9a, 10a) for discharge into the sewer of the spent washing liquid are located next to each other, forming a continuous channel. 4. A dishwasher according to any one of claims 1 to 3, comprising means (89) for moving the carrier (4), which, when the carrier (4) moves between the first and second positions, ensures its movement along a path having horizontal and vertical components. 5. Dishwasher according to claim 4, in which the means (89) for moving the supporting device (4) is a four-link articulated lever mechanism.