ES2351128B1 - DRUM AND MACHINE FOR CARE OF CLOTHING. - Google Patents

Abstract

Drum of a machine for the care of clothes and machine with said drum. # Drum (1) of a machine for the care of clothes, especially a washing machine comprising: a drum housing that rotates around an axis (A) , where the drum housing has a tubular shell casing part (2) with an inner wall and an outer drum wall. The outer wall of the drum housing is provided with a liquid jet generating device (3), which communicates with the inside of the drum housing, so that by rotating the drum inside a water wash tank, generate a jet of liquid (WS) directed into the drum (1).

Description

Drum a machine for the care of clothes and machine with said drum.

Technical field

The present invention relates to a drum of a laundry care machine, especially a washing machine, a washer-dryer, or the like, as well as a laundry care machine with a type drum.

State of the art

A drum of a laundry care machine is known, such as a washing machine, which has a drum housing with a rotation axis around which the drum is rotatable. The drum casing usually has a tubular housing part with a front wall and a rear wall. The casing lining piece is generally provided with a plurality of small passage openings, so that liquid can reach the inside of the drum.

Drums and clothes care machines, especially washing machines or washer-dryers, previously known have only limited cleaning efficiency.

Description of the invention

The invention is based on the task, that is, the technical problem, of creating a drum of a machine for clothes care, especially a washing machine, a washer-dryer, osimilar, which allows a greater cleaning efficiency; Likewise, a machine for the care of clothes, especially a washing machine, a washer-dryer, or the like, with such a drum must be made available.

The aforementioned task is solved according to a first aspect by means of a drum according to the invention with the characteristics of claim 1.

This drum of a machine for the care of clothes, especially a washing machine or a washer-dryer,

or the like, comprises: a drum housing with a rotation axis, around which the drum is rotatable, where the drum housing has a tubular casing shell with a front wall and a back wall. The outer side of the drum housing is provided with a liquid jet generating device, which communicates with the inside of the drum housing, to generate a strong liquid path directed to the inside of the drum and / or outside the drum.

The liquid jet generating device is activated and maintained in operation by rotating the drum itself, if the drum is rotated, for example, in a washing tank of a washing machine or the like filled with liquid.

With the aid of the liquid jet generating device, a powerful liquid jet can be generated by injecting into the drum and into the clothes located there (or also removed therefrom by aspiration) .Therefore, a strong rinsing and cleaning effect can be achieved, consequently, greater cleaning efficiency. For this reason, it could, as long as this is desirable, reduce the duration of a washing cycle compared to washing machines, that is, a conventional laundry care machine, with the same cleaning effect. The powerful jet of liquid will always also carry a certain portion of air and thus generate air bubbles, which are injected inside the drum together with the liquid.This effect can also be used to improve the cleaning of textile products located in the drum, and increase the effect of a softening agent, or the like, that is used during a process washing

Preferred and advantageous configuration features of the drum according to the invention are objects of dependent claims 2 to 9, which are based on the following description and drawings.

The task in which the invention is resolved according to a second aspect by means of a machine for the care of clothes according to the invention with the features of claim 10. This laundry machine, in particular, a washing machine, a washer-dryer, or the like, has a drum according to one or more of the claims 1 to 9. With the machine for clothing care according to the invention, essentially the same advantages as already described above in relation to the drum according to the invention are attainable.

Next, they are described and explained in more detail, with reference to the accompanying drawings, preferred embodiments of the invention with additional configuration details, and other advantages.

Brief description of the drawings

Sample:

Fig. 1 a schematic side view of a cross section through an essential area of a drum according to the invention, according to a first embodiment;

Fig. 2 a schematic section view of the drum according to the invention of Figure 1, along the line II-II of Figure 1;

Fig. 3 a schematic section view of the drum according to the invention of Figures 1 and 2, located along line III-III of Figure 2;

Fig. 4 a schematic side view of cross section through an essential area of a drum according to the invention, according to a second embodiment;

Fig. 5 a schematic top view on an outer peripheral area of a drum according to the invention, according to a third embodiment;

Fig. 6 a schematic section view of the drum according to the invention of Figure 5, located along the line VI-VI of Figure 5;

Fig. 7 a schematic side view of cross section through an essential area of a drum according to the invention, according to a fourth embodiment; and

Fig. 8 a schematic view, partially cut away, in perspective of an essential component of a drum according to the invention, according to a fifth embodiment.

Description of preferred embodiments

In the following description and in the fi gures, for the avoidance of repetitions, the constructive elements and equal components are also indicated with equal reference symbols, as long as no other differentiation is necessary or reasonable.

Figure 1 shows a schematic side view of a cross section through an essential area of a drum 1 according to the procedure, according to a first embodiment. Figure 2 shows a schematic section view of the drum 1 according to the invention of Figure 1, along the line II-II of Figure 1. Figure 3 shows a schematic section view of the drum 1 according to the procedure of Figures 1 and 2, along the length of line III-III of Figure 2. The longitudinal direction X, the direction of the width Y, and the direction of the height Z of the drum 1 are indicated in these figures in a Cartesian coordinate system. In this exemplary embodiment, in the drum 1 the drum is a washing machine. This drum is made of a stainless steel sheet with a radius. It has a pivot shaft. It is rotatably mountable in a washing tank, which contains in the operation of water wash, bleach or other cleaning liquid or suitable rinse. The drum basically presents a drum housing with a tubular piece of carcass casing 2 and a front wall and a back wall. The carcass casing part 2 has an outer surface 2 and an inner surface 2b. The front wall is essentially annularly shaped, and has a loading opening, through which clothes can be introduced inside the drum 1 and, after a washing process, can be removed again from the drum 1. The rear wall is usually essentially essential with shape of disk.Elege of rotation rotates with the rear wall, for example, through a support of star.The direction of rotation of the drum1 is indicated in the drawing by a arrow D.

In the drum1 according to the invention, the outer side of the drum housing, that is to say, here, the outer surface2a, is provided with a liquid jet generation device3, which communicates with the inside of the drum1, to generate a liquid jet, that is, a water jet, WS directed to the inside of the drum 1.

This liquid jet generation device3 has at least one long current channel4, which narrows against the direction of rotation. The current channel 4 has a liquid inlet opening 4a located on the outer side 2a of the drum1, and a channel section that leads through the drum casing, that is, its casing lining piece2, into the interior of the drum1, which flows into a liquid outlet opening4b.The disallowed opening4b has a section transverse of the liquid step smaller than the inlet opening 4a, and forms a jet nozzle. As can be seen in the fi gures1,2 and 3, the flow channel4 is con fi gurated in the form of a bulge5 or convexity as an integral part of the drum housing, that is, its casing lining piece2, in a way exterior of the drum 1, of the peripheral wall of the tubular shell casing part 2.

As indicated in the cross-sectional side view of Figure 1, the current channel 4 is con fi gured in a slightly curved manner, a stream of water stream WS generated in the current channel 4 flows inside the drum 1 with an inlet angle α relative to a tangent arranged along the perimeter of the drum1, that is, of its casing lining piece2.This curvature of the current channel4 is chosen here so that the angle of entry α is preferably in a range of 15 ° to 90 °, especially 20 ° to 90 °, especially 30 ° to 90 ° , especially 45º to 90º, especially 60º to 90º.

As can be seen in the representation of the figure 3, the symmetric current channel 4 also runs essentially parallel to the direction of the width and of the drum 1, which is the same, parallel to the direction of rotation of the drum 1. However, the current channel 4 can also be con fi gured laterally in a curved or asymmetrical direction to the direction of the X so that the water jet WS generated in the current channel 4 then inside the drum 1 with a lateral inlet angle β. This variant is indicated in the fi gure3 by dashed line.

The drum1 according to the invention preferably has a plurality of such current channels4, which are uniformly distributed along the periphery of the drum 1.

If the drum rotates within the tank of the filled liquid filling, bone, cleaning agent, in the direction of rotation D, then a relative current is generated to the current channel 4, and a part of the liquid is forced to the current channel 4, that is, to its inlet opening 4a. As a consequence of the narrowing shape of the flow channel 4, the speed of the flow of the liquid will in this case increase in the direction of the outlet opening 4b. And a strong water tank W is injected through the opening of the outlet 4b, which acts as a storage space, inside the drum 1 and to the textile products to clean, located in the middle, in the middle of the product. which significantly increases the effect of the cleanliness and the cleaning speed. Whenever desired, accordingly, the duration of the cleaning process can be significantly shortened, with the same cleaning effect, with respect to a washing machine and a washing machine according to the state of the technique.

In Figure 4, a schematic side view of a cross section is represented through an essential area of a drum 1 according to the invention, according to a second embodiment. This variant is essentially similar to that of Figures 1 to 3, although in this case the narrowing current channel 4 is formed by a concavity / recess 6 formed integrally in the drum housing, that is, the tubular shell casing part 2. A channel of current4 that presents both a bulge and a recess is equally possible within the meaning of the invention.

Figure 5 shows a schematic top view on an outer peripheral area of a drum 1 according to the invention, according to a third embodiment. In the figure 6 a schematic sectional view of the drum 1 according to the procedure of the figure 5 is outlined, the line of the line VI-VI of the figure 5. This drum 1 presents a liquid jet generating device 3 with at least one open channel 7, in the form of a venture nozzle, on the outer side of the drum, the outer edge of the outer channel. drum 1, and in parallel to its direction of rotation D. The Venturi channel 7 is formed in this example by plastically deformed areas of the carcass sheathing part 2. The Venturi channel 7 has two channel sections 7a, 7b directed against each other, which narrows towards each other, essentially symmetrical, which are unified at the point of their smallest channel diameter. In the area of the uni fi cation point, an extraction opening 8 is provided, which communicates with the inside of the drum 1. The extraction opening 8 is a passage opening, or a liquid suction opening, in the casing lining part 2.

If the drum rotates in the direction of rotation D or against the direction of rotation D, then in the area of the extraction opening 8 a lower pressure (“negative pressure”) is formed, so that the liquid inside the drum 1 is aspirated through the extraction opening 8. Therefore, the textile products to be cleaned are also moved back into the interior of the textile products to be cleaned, 1 inside the textile products , which increases the cleaning effect or rinsing effect. A symmetric Venturi7 channel is especially suitable for drum rotating direction1, while an asymmetric Venturi channel is preferred for a drum1 with only one direction of rotation. Although a half-open Venturi channel has been explained in this example, the invention also includes Venture channels that the current channel is still coated to a greater extent or even completely.

Figure 7 shows a schematic side view of the cross section through an essential area of a drum 1 according to the procedure, according to a fourth embodiment. Similarly in the variant according to figures 1 to 3, an essential part of the current channel 9 is con fi gured in a new form of a bulge as an integral part of the tube housing, not an integral part of the tubing. of this current channel9 (which forms a suction opening9a) is not directed against the direction of the current.Smart liquid that occurs during the rotation of the drum, but opens in the direction of current S. The bulge, which forms to some extent the outer casing of the channel of current 9, it has the form of a ramp 10. This has the effect that, during the rotation of the drum 1 in the direction of rotation D, behind the ramp 10 a lower pressure ("negative pressure") is formed and, thus, a suction effect is produced. In this case, it is a Venturi effect. Therefore, a part of the water located inside the drum1, well, of the liquid located there, is sucked through the current channel9 and the suction opening9 of the latter.Therefore, the textile products to be cleaned, placed in the interior of the drum1, are crossed again vigorously by the current, which increases the effect of the sharp direction of the reversed effect of the reverse direction. , the current channel 9 can be operated with an appropriate configuration mode similar to the current channel 4 of the embodiment according to Figures 1 to 3.

In figure 8, an essential component of a drum according to the invention is shown in a schematic view, partially cut, in perspective, according to a fifth embodiment. In this variant, the liquid jet generating device 3 presents a separate adapter element 11, fixes to the housing of plastic, plastic material, the which has at least a part of the current channel 4, the liquid inlet opening 4 and the liquid outlet opening 4b. This adapter element 11 is configured as a housing-shaped plug-in element, which essentially covers the current channel 4, which narrows, which is preferably pluggable on the outer side (or, also, inner side) of the drum, or otherwise settable. Conventional drums of a washer-dryer or dryer-dryer machine usually have their casing piezatubular casing openings ("standard passage openings"), through which the liquid located in the washing tank can reach the inside of the drum. The plug-in element11 is now provided with elements 12,13,14, which are insertable and pluggable in these standard openings. This modem, the plug-in element, or adapter, 11 can be fixed to the drum easily, effectively and safely. However, basically, the adapter element 11 and / or the drum elements can also be provided. of special union.

In the present example, the plug-in element 11 has three plug-in connection elements 12, 13, 14. Two (12, 13) are configured as a plug, while the third plug-in connection element 14, which is arranged in the end Narrow of the plug-in element 11 and of the current channel 4 which is narrowed, well, or tubular. Therefore, that constitutes an outlet-by-outlet element 14, which forms the outlet opening 4b of the current channel 4, con fi gured as a jet nozzle. or insertable through this opening of the passage) .Therefore, the outlet-by-outlet element14 establishes a liquid connection to the inside of the drum.The function of this plug-in element11 and its current channel4 corresponds essentially to the current channel4of the embodiment according to the figures1 to 3. With the output plug 14, which acts as an output for the current channel 4, the plug-in element 11 can, of course, also have an output for the current channel 4 totally independent of the plug-in elements.

The drum according to the invention is preferably used in clothes care machines, especially washing machines, washer-dryers, or the like.

The invention is not limited to the previous embodiments. Other embodiments are also possible within the scope of protection of the appended claims. In particular, the different relevant components of the invention of the different embodiments described and / or of the respective claims can be joined, that is, combined, with each other.

A particular current channel can also be provided in partial areas of the rear wall, or even in partial areas of the front wall of the drum. The pressure and suction stream channels can also be combined in a drum. Such current channels can be provided, for example, in the tubular casing casing piece spaced apart from one another in the peripheral direction of the drum. Then, liquid is both pressed or injected into the drum and sucked back into the drum, which allows a very intense and, therefore, thorough cleaning of the textile products in the drum as well as effective.

The outlet opening that acts as a jet nozzle of the current channel may in particular have a current channel, in which the liquid is pressed into the channel through dynamic pressure, of different forms of cross-section. It can be formed basically in a round, oval, angular, polygonal, groove-shaped way (for example, as a flat jet nozzle), wavy, symmetrical or asymmetric, etc.

Also, the size of the passage opening of the jet nozzle can be con fi gurated in a variable manner. This can occur through an active or passive adjustment of the nozzle opening. A passive adjustment can be made, for example, in a manner dependent on the number of revolutions or, also, dependent on the centrifugal force. Adjustment elements may be provided in the nozzle opening, for example, in the form of slides, elastic elements,

or the like. In the outlet opening, for example, an elastically deformable tongue can be installed, which delimits one side of the nozzle opening. The tongue can be con fi gured as an integral component of the drum wall. Depending on the number of revolutions of the drum, the tongue will elastically deform in a different way, conditioned by centrifugal force, and thus form nozzle openings of different sizes. A variable nozzle size can be advantageous, for example, to clean different textile products that have different textile structures and strengths. Especially in the area of the outlet opening of the current channel, eddy generators can also be arranged, which generate a torsion and, thus, a swirling water jet.

The plug-in element 11 described can also be configured in such a way that, instead of essentially covering the current channel, it only has a partial area of the current channel, while the other half is formed, for example, by an area of drum wall.

The reference symbols in the claims, the description and the drawings serve only the best understanding of the invention, and should not limit the scope of protection.

List of reference symbols

Drum 2

Tubular casing cladding part 2a External surface of 2 2b Internal surface of 2 3

Liquid jet generation device 4 Current channel 4a Liquid inlet opening 4b Liquid outlet opening (jet nozzle) 5 Convexity / Bulging 6 Cocavity / Cutout 7 Canal Venturi 7a Channel section 7 7b Channel section 7 8 Extraction opening 9 Channel power supply 9a Suction opening 10 Ramp 11 Adapter / plug-in element 12 Plug connection element 13 Plug connection element 14 Connection element via output plug

α Input angle β Side entry angle A Drum rotation axis1 D Drum rotation direction1 R Drum radius1 T Tangent WS Liquid jet / water jet X

Longitudinal direction of drum1 Y Direction of drum width1 Z Direction of drum height1

Claims (11)

1.Tomor (1) of a machine for the caretaker, especially a washing machine or a washer-dryer, or the like, comprising: a drum housing with a rotation axis (A), around which the drum (1) is rotatable, where the housing of the drum represents a tubular piece of housing covering (2) with a front wall and a rear wall, characterized because The outer side of the drum housing is provided with a liquid jet generating device (3), which communicates with the inside of the drum housing, to generate a liquid jet (WS) directed to the inside of the drum (1 ) and / or outside the drum (1). 2.Tambor (1) according to claim 1, characterized because the liquid jet generating device (3) has at least one narrowing current channel (4), which it has a liquid inlet opening (4a) located on the outside of the drum (1), and a section of the channel that leads through the inner drum housing of the drum (1), which flows into a liquid outlet opening (4b), which has a smaller cross-section of liquid passage than the liquid inlet opening ( 4a), and forms a jet nozzle. 3.Tambor (1) according to claim 2, characterized because The size of the passage opening of the jet nozzle is variable. 4.Tambor (1) according to one of the preceding claims, characterized because the liquid jet generating device (3) has at least one current channel (7) as a Venturi nozzle on the outer side (2; 2a) of the drum (1), with an extraction opening (8), which communicates with the inside of the drum (1). 5.Tambor (1) according to one of claims 2 to 4, characterized in that the current channel (4) is formed by a convexity (5) formed integrally in the housing of drum. 6. Drum (1) according to one of the preceding claims, characterized in that the current channel (4) is formed by a concavity (6) formed integrally in the housing of drum. 7.Tambor (1) according to one of the preceding claims, characterized because The liquid jet generating device (3) has a separate adapter element (11), fixed to the drum housing, which has at least one part of the flow channel (4), the liquid inlet opening (4a) and the outlet opening of liquid (4b). 8.Tambor (1) according to claim 7, characterized because it has in its tubular casing part (2) passage openings; and The adapter element is configured as a plug-in element (11), and has plug-in connection elements (12,13,14), which are pluggable in the passage openings, and with which the adapter element (11) is fixed to the drum (1). 9.Tambor (1) according to claim 8, characterized because At least one of the connecting elements by plug (12, 13, 14) is a connecting element by outlet plug (14), which has the liquid outlet opening (4b) con fi gured as a jet nozzle, and is pluggable into an opening of passage of the drum housing, or is insertable through the passage opening, so that a liquid connection to the interior of the drum (1) is established. 10. Clothes care machine, especially a washing machine, a washer-dryer, or the like, with a drum (1) according to several of the claims 1 to 9. SPANISH OFFICE OF THE PATENTS AND BRAND Application no .: 200803422 SPAIN Date of submission of the application: 02.12.2008 Priority Date: REPORT ON THE STATE OF THE TECHNIQUE 51 Int. Cl.: See Additional Sheet RELEVANT DOCUMENTS

Category

Documents cited Claims Affected

TO

ES 2209215 T3 (DAEWOO ELECTRONICS CORP) 16.06.2004, column 1, lines 3-11; column 1, line 52 - column 2, line 25; column 3, lines 1-9; column 4, line 44 - column 8, line 7; Figures 1-6. 1-3,5,7,10

TO

ES 2000375 A6 (ZANUSSI A SPA INDUSTRIE) 16.02.1988, column 1, lines 3-6; column 2, lines 8-32; column 2, line 58 - column 4, line 11; figures 2,3. 4

TO

EN 8204780 A1 (THOMSON-BRANDT) 16.08.1982, page 2, line 16 - page 3, line 11; page 5, line 23 - page 6, line 4; page 6, line 16 - page 7, line 2; page 7, line 28 - page 8, line 7; page 8, lines 13-19; page 9, line 14 - page 10, line 5; page 11, lines 4-15. 1.4

TO

US 4744228 A (GOLDBERG MICHAEL) 17.05.1988, column 1, lines 4-7; column 1, line 48 - column 3, line 27; Figures 1-5. 1.4

TO

ES 2247573 T3 (DAIMLER CHRYSLER AG) 01.03.2006, column 1, lines 3,4; column 2, line 28 - column 3, line 29; Figures 1-3. 8

Category of the documents cited X: of particular relevance Y: of particular relevance combined with other / s of the same category A: reflects the state of the art O: refers to unwritten disclosure P: published between the priority date and the date of priority submission of the application E: previous document, but published after the date of submission of the application

This report has been prepared • for all claims □ for claims no:

Date of realization of the report 10.01.2011

Examiner M. Fernández Rodríguez Page 1/4

REPORT OF THE STATE OF THE TECHNIQUE Application number: 200803422 CLASSIFICATION OBJECT OF THE APPLICATION D06F37 / 02 (01.01.2006) D06F41 / 00 (01.01.2006) D06F39 / 08 (01.01.2006) G01P5 / 14 (01.01.2006) Minimum documentation sought (classification system followed by classification symbols) D06F, G01P Electronic databases consulted during the search (name of the database and, if possible, search terms used) INVENTIONS, EPODOC State of the Art Report Page 2/4  WRITTEN OPINION Application number: 200803422 Date of Written Opinion: 10.01.2011 Statement

Novelty (Art. 6.1 LP 11/1986)

Claims Claims 1-10 IF NOT

Inventive activity (Art. 8.1 LP11 / 1986)

Claims Claims 1-10 IF NOT

The application is considered to comply with the industrial application requirement. This requirement was evaluated during the formal and technical examination phase of the application (Article 31.2 Law 11/1986).  Opinion Base.- This opinion has been made on the basis of the patent application as published. State of the Art Report Page 3/4  WRITTEN OPINION Application number: 200803422 1. Documents considered.- The documents belonging to the state of the art taken into consideration for the realization of this opinion are listed below.

Document

Publication or Identification Number publication date

D01

ES 2209215 T3 (DAEWOO ELECTRONICS CORP) 16.06.2004

D02

ES 2000375 A6 (ZANUSSI A SPA INDUSTRIE) 02/16/1988

D03

ES 8204780 A1 (THOMSON-BRANDT) 16.08.1982

D04

US 4744228 A (GOLDBERG MICHAEL) 05/17/1988

D05

ES 2247573 T3 (DAIMLER CHRYSLER AG) 01.03.2006

2. Statement motivated according to articles 29.6 and 29.7 of the Regulations for the execution of Law 11/1986, of March 20, on Patents on novelty and inventive activity; quotes and explanations in support of this statement The object of the invention is a drum of a machine for the care of clothes, especially a washing machine or a washer-dryer machine, or the like, such that the outer side of the housing is provided with a jet device of liquid, which communicates with the inside of the housing. Claim R1 has the following characteristics: Drum (1) of a laundry machine, especially a washing machine or a washer-dryer machine, or the like, comprising: a drum housing with a rotation axis (A), around which the drum (1) is rotatable, where the drum housing has a tubular casing shell (2), with a wall front and a rear wall, such that the outer side of the drum housing, is provided with a liquid jet generating device (3), which communicates with the inside of the drum housing, to generate a liquid jet ( WS), directed inside the drum (1) and / or outside the drum (1). (References in parentheses correspond to the application document). Document D01 could be considered the closest to the state of the art found and describes a drum (60) of a laundry machine, especially a washing machine or a washer-dryer machine, or the like. comprising: a drum housing with a rotation axis, around which the drum (60) is rotatable, with a front wall and a rear wall, such that the drum reservoir (50) (60), is provided with a Air bubble jet generator (70), which communicates with the inside of the drum housing, to generate a jet of air bubbles, directed to the inside of the drum (60). (References in parentheses correspond to document D01). Unlike the request, document D01 does not disclose that the drum housing has a tubular shell casing; nor that the generating device produces a jet of liquid, but of air bubbles; nor that said jet is directed inside and / or outside the drum, but only oriented inwards; nor that the jet generating device is located on the outer wall of the cylinder housing or drum tube, but on the reservoir. I don't know that a document that meets all these characteristics has been found in the state of the art. Therefore, it is concluded that the drum defined in this first independent claim has novelty (Art.6 L11 / 86) and inventive activity (Art.8 L11 / 86). Claims 2 to 10 are dependent on claim 1 and therefore also present novelty and inventive activity with respect to the State of the Art. State of the Art Report Page 4/4