Filter device for a dishwasher or washing machine

Abstract

A filter device for dishwashers or washing machines comprises a filter housing, an inlet opening for raw water, and an outlet opening for clean water. The inlet opening is formed in a first housing wall. A filter for filtering the raw water is arranged downstream from the inlet opening in the flow path of the raw water. The outlet opening is formed in the first housing wall.

Claims

1. A filter device for dishwashers or washing machines, comprising: a filter housing (3); an inlet opening (5) for raw water formed in a first housing wall (3.1); a filter (9) for filtering the raw water, the filter (9) being arranged downstream from the inlet opening (5) in a flow path of the raw water; and an outlet opening (7) for clean water formed in the first housing wall (3.1), wherein the filter (9) comprises a first carrier element (9.1) extending vertically and parallel to the first housing wall (3.1) within the filter housing (3), a second carrier element (9.2) extending horizontally from a lower end of the first carrier element (9.1) to the first housing wall (3.1), and a screen element (9.5), which extends transversely over the flow path of the raw water, and wherein the filter (9) forms a flow channel (11.1) with a second housing wall (3.2) over a section (11) of the flow path.

2. The filter device according to claim 1, wherein, in an operating position of the filter housing (3), the outlet opening (7) is arranged at a distance below the inlet opening (5), and wherein the second carrier element (9.2) is located vertically between the inlet opening (5) and the outlet opening (7).

3. The filter device according to claim 1, wherein the filter (9) forms a flow channel (11.1) with a second housing wall (3.2) over at least one section (11) of the flow path, wherein the flow channel (11.1) extends between the second housing wall (3.2), which is a bottom wall of the filter housing (3), and the second carrier element (9.2) aligned with the outlet opening (7).

4. The filter device according to claim 3, wherein the flow channel (11.1) extends horizontally from the first housing wall (3.1) to the first carrier element (9.1).

5. The filter device according to claim 3, wherein the flow channel (11.1) leads downstream into the outlet opening (7).

6. The filter device according to claim 1, wherein the screen element (9.5) extends between an upper end of the first carrier element (9.1) and an end of the second carrier element (9.2).

7. The filter device according to claim 6, wherein the screen element (9.5) is arranged obliquely in the filter (9).

8. The filter device according to claim 6, wherein the screen element (9.5) is arranged at an essentially obtuse flow angle () of the raw water.

9. The filter device according to claim 1, wherein the inlet opening (5) has an inlet nozzle (5.1) on the first housing wall (3.1), and wherein the outlet opening (7) has an outlet nozzle (7.1) on the first housing wall (3.1).

10. The filter device according to claim 9, wherein the inlet nozzle (5.1) and the outlet nozzle (7.1) are aligned essentially in parallel.

11. The filter device according to claim 1, wherein a deflection region is formed between the screen element and the flow channel, such that the flow of the clean water is redirected by approximately 180 before entering the flow channel.

12. The filter device according to claim 1, wherein the screen element (9.5) is located entirely above the outlet opening (7).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a schematic sectional illustration in the longitudinal section through a filter housing of a filter device;

(2) FIG. 2 shows a schematic sectional illustration in the cross section through the filter housing from FIG. 1;

(3) FIG. 3 shows a schematic sectional illustration in a horizontal section through the filter housing from FIG. 1;

(4) FIG. 4 shows a schematic sectional illustration in the longitudinal section of a filter housing of the prior art; and

(5) FIG. 5 shows a sectional illustration in the cross section of the filter housing from FIG. 4.

DETAILED DESCRIPTION

(6) A filter device 1 is illustrated schematically in FIG. 1. The filter device 1 comprises a filter housing 3, which is formed as rectangular case in the present embodiment. In other embodiments, the filter housing 3 can also have other shapes.

(7) The filter housing 3 has several housing walls, which enclose the filter housing 3 on all sides. A first housing wall 3.1 and a second housing wall 3.2 is significant for the present invention. An inlet opening 5, to which the inlet nozzle 5.1 is attached on the outside, is formed in the first housing wall 3.1. An outlet opening 7 is formed in the first housing wall 3.1 at a distance from the inlet opening 5. The outlet opening 7 also has an outlet nozzle 7.1 on the outer side of the first housing wall 3.1. The inlet nozzle 5.1 and the outlet nozzle 7.1 also lie at a distance from one another.

(8) A filter 9 is arranged in the filter housing 3. With a first carrier element 9.1, the filter 9 extends parallel to the first housing wall 3.1, and with a second carrier element 9.2 parallel to a second housing wall 3.2. The second carrier element 9.2 extends from the first carrier element 9.1 all the way to the first housing wall 3.1. A screen element 9.5 extends from a free end of the first carrier element 9.1, that is, from an end 9.3 of the first carrier element 9.1 distally from the second housing wall 3.2, and an end 9.4 of the second carrier element 9.2 adjoining the first housing wall 3.1. The screen element 9.5 extends in such a way that in an operating position of the filter housing 3, the inlet opening 5 lies completely above the screen element 9.5.

(9) In the embodiment illustrated in FIG. 1, the raw water from the inlet opening 5 hits the screen element 9.5 at an obtuse flow angle . Coarse residues in the raw water are retained by the screen element 9.5, while the water per se can flow through the screen element 9.5. A flow path between the screen element 9.5 and the outlet opening 7 is guided through a flow channel 11.1 at least in a last section 11 upstream of the outlet opening 7. The flow channel 11.1 leads into the outlet opening 7 from the inside.

(10) The UNI filter box can be continuously height-adjusted by means of the plastic pipe nozzles 13, which are attached under the second housing wall 3.2 (the bottom), by sawing them off or by attaching longer plastic pipes.

(11) It is illustrated schematically in FIG. 2 in the cross section through the filter housing 3, how the screen element 9.5 extends in the filter housing 3. The filter 9 has a handle 15, by means of which the filter 9 can be removed from the filter housing 3. The filter housing 3 likewise has a handle 15 (FIG. 1), by means of which a cover 17 of the filter housing 3 can be taken off. It can be seen in FIG. 2 that the outlet opening 7 is not only formed below the inlet opening 5, but additionally also horizontally offset to the inlet opening 5.

(12) A top view in the horizontal section of the filter housing 3 is illustrated schematically in FIG. 3. In its geometry, the filter 9 is adapted to the geometry of the inner dimensions of the filter housing 3 in such a way that the filter 9 can be inserted releasably, yet firmly into the filter housing 3.

(13) A filter housing 3 of the prior art is illustrated in FIG. 4 and FIG. 5. It can be seen that, on the one hand, the inlet opening 5 and the outlet opening 7 are located diametrically opposite one another, are thus formed in two housing walls located opposite one another, and, on the other hand, are arranged in the same vertical plane, thus not laterally offset from one another.

LIST OF REFERENCE NUMERALS

(14) 1 filter device 3 filter housing 3.1 first housing wall 3.2 second housing wall 5 inlet opening 7 outlet opening 9 filter 9.1 first carrier element 9.2 second carrier element 9.3 distal end 9.4 adjoining end 9.5 screen element 11 last section 11.1 flow path 13 pipe nozzle 15 handle 17 cover