RU2402651C2 - Domestic water consumer appliance with relief laundry drum - Google Patents

Abstract

FIELD: textile, paper. ^ SUBSTANCE: laundry drum for water consumer domestic appliance comprises drum shell and at least one end surface of drum. Stamped grooves with ellipsoid edges, directed inside, are arranged on laundry drum. Stamped grooves are arranged at minimum distance from each other to form hollow spaces in the form of channels. Ellipses of stamped grooves have different axles, besides length of large axle makes from 5 to 15 mm, and length of small axle makes from 2.5 to 10 mm. ^ EFFECT: increased efficiency of laundering and drying and reduced power consumption. ^ 14 cl, 8 dwg

Description

Technical field

The invention relates to a water-consuming household appliance, for example, a washing machine, a washing machine with a dryer or a machine for drying clothes with a laundry drum rotatably mounted and comprising a drum shell and at least one end surface of the drum, stamped recesses being made on the laundry drum with elliptical edges. In addition, the invention relates to a laundry drum of a water-consuming household appliance comprising a drum shell and at least one end surface of the drum, stamped recesses being made on the laundry drum.

State of the art

From patent document EP 0 935 687 B1, a washing machine or a machine for drying clothes is known, comprising a drum mounted rotatably in the washing solution tank in a horizontal or inclined position. The drum shell has a relief structure formed by polygons directed inside the drum. Holes are located at the corner points of the contour of the edges of the relief structure.

In the patent document of Germany No. 19731666 A1 describes a laundry drum of an electric machine for drying clothes. A wavy stamped relief is made on the side of the drum.

From the German patent document No. 19603710 A1, a water-consuming household appliance is known, for example, a machine for drying clothes or a washing machine with a washing solution tank and a laundry drum mounted rotatably in the tank, and the shell of the washing solution tank is provided with stamped recesses. Stamped recesses can be made round, oval or polygonal. Round stamped recesses have an additional slightly curved shape.

From the patent document of Germany No. 4445669 A1, a laundry drum for a washing machine is known, equipped with a plurality of through holes for the passage of the working fluid on its cylindrical shell. Between these openings stamped indentations or elevations are provided.

From the patent document of Germany No. 10145079 C1, a drum of a machine for drying clothes with a perforated rear wall of the drum, a loading hole and a drum rim connected to the rear wall is known. On the surface of the shell there are stamped recesses in the form of a structure with honeycomb bulges, the honeycomb surfaces of which are facing the outer side of the drum.

Disclosure of invention

The problem to which the present invention is directed, is to create a water-consuming household appliance and clothes drum with improved washing and drying.

In accordance with the invention, the solution of the problem is achieved by creating a water-consuming household appliance having the characteristics of paragraph 1, and a linen drum having the characteristics of paragraph 18 of the claims. Preferred embodiments are set forth in the dependent claims.

In a water-consuming household appliance according to the invention, for example, in a washing machine, or in a washing machine with dryer, or in a machine for drying clothes with a laundry drum rotatably mounted and comprising a drum shell and at least one end surface of the drum, stamped depressions with ellipsoid edges are made on the laundry drum, the edges of stamped depressions are ellipsoid. Due to this, in the neckless part of the linen drum, intermediate spaces are formed in the form of channels for the passage of flow. The fluid that flows in these intermediate spaces in the form of channels between the pressed recesses and the laundry that is attached to them undergoes low flow losses due to the elliptical shape of the pressed recesses.

Preferably, the stamped recesses are formed on the side of the drum. The linen is generally adjacent to the side of the drum, so stamped recesses are especially useful here.

In a further preferred embodiment, the stamped recesses are oriented inside the laundry drum.

In the example of a solution for the development of the invention, stamped recesses are made different in size and / or different in shape, that is, the ellipses that form the basis of stamped recesses have different half axes a, b. Due to this, additional adaptation to various conditions can be achieved.

In the following exemplary embodiment, the length of the semi-major axis a is from 5 to 15 mm, and the length of the semi-minor axis b is from 2.5 to 10 mm.

In an example of a development solution, the cross-sectional contour of stamped recesses, in particular parallel to each axis of the ellipse, is arched, or angular, or polygonal, for example triangular or rectangular. Thus, the shape of the stamped recesses is different and due to this it can adapt to various specific circumstances.

In the following exemplary embodiment, the cross-sectional curvature is uneven and / or the slope of the stamped recesses in the cross-section is different.

In a further exemplary embodiment, the depth of the stamped recesses is from 0.5 to 5 mm.

In an additional embodiment, the minimum distance between the stamped recesses is from 3 to 10 mm. Due to the minimum distance between the stamped recesses between them, intermediate spaces are formed in the form of channels through which washing solution or drying air can flow well.

In a preferred embodiment, the stamped recesses are offset to allow the largest number of stamped recesses to be made per unit area. The more stamped depressions per unit area, the more intense the positive impact of stamped depressions in the linen drum.

In the following example, the execution of the semiaxis a, b of the ellipses of the stamped recesses are oriented on the drum shell in parallel, perpendicularly or with an inclination at a certain angle α relative to the axis of the drum.

In another exemplary embodiment, through holes are provided in the drum shell in a washing machine or a machine for drying laundry.

In a further exemplary embodiment, the through holes are located between the stamped recesses or in ellipsoidal stamped recesses.

Preferably, the diameter of the through holes is from 1 to 4 mm, and the distance between the through holes is from 2 to 10 mm.

In the following exemplary embodiment, stamped recesses are made on surface sections of the drum shell.

In the decision to develop the invention, stamped recesses are interrupted or not made on the gripping ribs. This ensures reliable fastening of the gripping ribs on the shell of the drum, and dirt or lint cannot be deposited in the intermediate spaces between the stamped recess and the gripping rib.

In the laundry drum according to the invention, designed for a water-consuming household appliance and containing a drum shell and at least one end surface of the drum, stamped recesses are made on the laundry drum, and the edges of the stamped recesses are ellipsoidal.

Brief List of Drawings

Next, with reference to the accompanying drawings will be described in detail examples of the invention.

In the drawings:

figure 1 depicts in perspective a washing machine according to the invention,

figure 2 depicts in perspective a linen drum according to the invention,

figure 3 depicts a top view of the shell of the drum in one example of execution,

figure 4 depicts in a top view a scan of the shell of the drum,

figure 5 depicts a top view of a scan of the shell of the drum in a further exemplary embodiment,

6 depicts one of the ellipses underlying the stamped recess,

Fig.7 depicts a profile of a linen drum with stamped recesses of a quadrangular profile,

Fig.8 depicts a profile of a linen drum with stamped recesses of the arc profile.

The implementation of the invention

Figure 1 shows a washing machine 1 with a laundry drum 6 in accordance with the invention. The laundry drum 6 comprises an end rear surface 3 and a drum shell 2. On the shell 2 of the drum, stamped recesses 4 are made. The edges of the stamped recesses 4, that is, the transition from the stamped recess 4 to the neckless part of the laundry drum 6 and in particular the transition from the stamped recess 4 to the neckless part of the shell 2 of the drum, are elliptical. In addition, there are preferably also gripping ribs 5 on the drum shell 2. The stamped recesses 4 are directed inward of the laundry drum 6, however, they can also be directed from the inside out. The shape of the edge of the stamped recess does not have to be elliptical in the strict sense of the mathematical definition. The ellipsoid stamped recesses 4 may also have shapes with slight deviations from the shape of the ellipse in its mathematical definition. In the General case, stamped recesses 4 are performed on the casing 2 of the drum of the washing machine 1, as described in this embodiment, or the drum of the machine for drying clothes (not shown).

The stamped recesses 4 may have the shapes shown in FIGS. 3, 4 and 5, as well as similar, not shown shapes, and also have different sizes and / or different shapes than shown. By excellent shapes, we mean stamped recesses 4, in which the ellipses that make up the basis of the stamped recess have excellent axle axes a and b (Fig. 6). Typically, the length of the semimajor axis a is about 5 to 15 mm, and the length of the semimajor axis b is about 2.5 to 10 mm. The cross section of the stamped recesses 4 can be made arcuate or polygonal. In Fig.7 shows the profile of stamped recesses with a rectangular cross section, and Fig.8 - with an arched cross section. Thus, when the cross-section of the stamped recesses 4 is arched, the domed shape of the stamped recess 4 is obtained. When the cross-sectional shape of the ellipse-shaped stamped recesses 4 is angular, with one or more angles, for example, a triangular or rectangular cross-section, for example, a recess 4 is formed in the form of a rectangular parallelepiped .

The radii of curvature and / or the rise of the cross section of the stamped recess may also be different. In the transition region between the stamped recess 4 and the neckless part of the drum shell 2, for example, a relatively steep slope to the drum shell 2 can be provided, and toward the center this inclination of the ellipsoidal recesses 4 can gradually decrease. The depth of the stamped recesses is from about 0.1 to 10 mm and preferably lies in the range from 0.5 to 5 mm.

Preferably, the stamped recesses are spaced from each other with a minimum distance, for example 1 mm. Due to this, during washing or during centrifugation, water can advantageously flow freely between stamped recesses 4, for example, through holes 9 of perforations, which are available in washing machines 1 or in machines for drying clothes (Fig.3-5). In the machine for drying clothes due to the intermediate space, an air cushion is formed on which the laundry falls with damping, which provides gentle processing of the laundry and, in addition, reduces noise. In a preferred embodiment, the ellipsoidal stamped recesses are offset, as shown in FIGS. 3-5. Due to the displacement, a larger number of stamped recesses 4 per unit area of the shell 2 of the drum can be made, which increases the efficiency of the impact of stamped recesses 4.

Figure 2 shows the laundry drum 6 according to the invention, comprising a shell 2 and an end rear surface 3. The laundry drum 6 rotates about an axis 7 in a rotation direction 8.

The stamped recesses 4 can be oriented differently on the shell 2 of the drum. Figure 3 shows the sweep of the shell 2 of the drum in a plan view. In each embodiment, stamped recesses 4 are offset. In the embodiment of FIG. 3, the semimajor axis a of the ellipse, which is the basis of the stamped recess 4, is oriented perpendicular to the axis 7 of the drum and parallel to the direction of rotation 8. In contrast, in the example embodiment of FIG. 4, the semi-major axis a of the ellipse, which is the basis of the stamped recess 4, is oriented perpendicular to the direction of rotation 8 and parallel to the axis 7 of the drum. In the following exemplary embodiment of FIG. 5, the semi-major axis a of the ellipse, which is the basis of the stamped recess 4, is oriented at an angle a to the axis 7 of the drum. In addition, in the embodiments of FIGS. 3-5, a cross section 10 of stamped recesses 4 is shown in the direction of the major axis a and a cross section 11 of stamped recesses 4 in the direction of the minor axis b.

In this embodiment, the description is given with reference to the washing machine 1 or the machine for drying clothes. Therefore, in FIGS. 3-5, the usually available are also located between the stamped recesses 4 or also in them (not shown). In the General case, the through holes 9 have a diameter of from 1 to 4 mm and are located at a distance of 2 to 20 mm from each other.

In a water-consuming household appliance, stamped recesses offer the advantage of stiffening the laundry drum. This provides material savings and noise reduction due to the increased rigidity of the laundry drum 6. Due to the relief structure of the shell small scratches or other minor damage are not visible on the inner surface of the drum, which gives the laundry drum less visual vulnerability.

Between the non-neck part of the shell of the drum, channels are formed for the passage of the flow, since the laundry is adjacent to the ellipsoid stamped recesses. Due to this, when washing, water can flow freely to the through holes. The same is ensured by centrifugation. In addition, due to this, the water supply is also naturally improved. Stamped recesses massage the laundry, enhancing the mechanical effect during washing. Due to the increased surface pressure through the stamped recesses, laundry is better caught by the laundry drum and further improves the mechanical effect during washing.

When using the machine for drying clothes in accordance with the invention during drying between the pressed recesses, an air flow is generated, which in general can improve the drying process and increase its productivity. Thanks to the air cushion between the pressed recesses, the laundry falls softer. Due to this, noise is reduced and gentle processing of linen with shock damping is ensured. In addition, in this channel-shaped hollow space between the laundry and the stamped depressions, moisture diffusion of the laundry into the air layer or air cushion may occur. This improves the drying performance. The air supplied for drying can trap moisture more easily, which also increases drying performance and reduces energy consumption.

Claims (14)

1. A laundry drum (6) for a water-consuming household appliance, comprising a drum shell (2) and at least one end surface (3) of the drum, and on the laundry drum (6), stamped indentations (6) directed inwardly are made with ellipsoid edges, stamped recesses (4) are located at a minimum distance from each other with the formation of hollow spaces in the form of channels, and the ellipses of stamped recesses (4) have different half shafts (a, b), characterized in that the length of the large half shafts (a) is from 5 to 15 mm long and the minor axis (b) is from 2.5 to 10 mm. 2. Linen drum according to claim 1, characterized in that the stamped recesses (4) are made on the side of the drum (2). 3. The laundry drum according to claim 1, characterized in that the cross-sectional contour of the stamped recesses (4), in particular parallel to each axis, is elliptical, arched, angular or polygonal. 4. The laundry drum according to claim 3, characterized in that the cross-sectional contour of the stamped recesses (4) is triangular or rectangular. 5. The laundry drum according to claim 3 or 4, characterized in that the curvature of the cross section is uneven and / or the slope of the stamped recesses (4) in the cross section is different. 6. Linen drum according to any one of claims 1 to 4, characterized in that the depth of the stamped recesses (4) is from 0.5 to 5 mm. 7. Linen drum according to any one of claims 1 to 4, characterized in that the minimum distance between the stamped recesses (4) is from 3 to 10 mm. 8. The laundry drum according to any one of claims 1 to 4, characterized in that the stamped recesses (4) are offset to allow the largest number of stamped recesses (4) to be made per unit area. 9. The laundry drum according to any one of claims 1 to 4, characterized in that through holes (9) are made in the shell (2) of the drum. 10. The laundry drum according to claim 9, characterized in that the through holes (9) are located between the stamped recesses (4) or in the stamped recesses (4). 11. The laundry drum according to claim 9, characterized in that the diameter of the through holes (9) is from 1 to 4 mm, and the distance between the through holes (9) is from 2 to 10 mm. 12. The laundry drum according to any one of claims 1 to 4, characterized in that the stamped recesses (4) on the gripping ribs (5) are missing or interrupted. 13. A laundry drum according to any one of claims 1 to 4, characterized in that it is mounted rotatably in a water-consuming household appliance (1). 14. The laundry drum according to claim 13, characterized in that the household appliance (1) is a washing machine (1), a washing machine with dryer or a machine for drying clothes.

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