WO2007124813A1

WO2007124813A1 - Detergent dispenser of washing machine integrated in its hopper

Info

Publication number: WO2007124813A1
Application number: PCT/EP2007/002127
Authority: WO
Inventors: Philippe Duval
Original assignee: Electrolux Home Products Corp NV
Current assignee: Electrolux Home Products Corp NV
Priority date: 2006-04-28
Filing date: 2007-03-12
Publication date: 2007-11-08
Anticipated expiration: 2009-09-12
Also published as: EP1849908B1; ES2373322T3; RU2008146917A; RU2445411C2; EP1849908A1; WO2007124813A8; PL1849908T3; ATE523624T1

Abstract

The invention consists in installing the detergent products dispenser (30) in the loading hopper (10) of the machine and ensuring its closure by the intermediary of the hopper lid (20). For that, the loading hopper lid (20) is equipped, on its inside face, with raised parts made in a flexible material that follow the shape of the inlet edges (326 to 328) of the respective compartments (310 to 312) of the detergent products dispenser (30), in order to ensure the correct closure of them under the pressure applied of them by the hopper lid (20) when it is closed. This dispenser staying fully dismountable and cleanable out of the machine.

Description

DETERGENT DiSPENSER OF WASHING MACHINE INTEGRATED IN ITS HOPPER

The invention refers to a detergent products dispenser integrated with the loading hopper of a top-loading washing machine.

It is known that, on the most recent washing machines, a detergent products dispenser able to dispense, during some stages of the washing cycle, a solid and/or liquid detergent products previously introduced into the appropriate boxes grouped in the same space, laid out on one of the sides or at the back of the loading hopper of the machine or, on some machines, in a box or in a pocket fixed to the bottom of the hopper door and taking place in the space left free between the hopper door and the periphery of the drum.

The automatic delivery at the right time of each of the detergent products induces a relatively dispenser products detergent complexity to obtain their draining by the wash liquid as well as the unavoidable dead angles in the boxes that disturb the dispersion and complete distribution of the detergent products dose. This results in permanent deposits of matter that ends up by reducing the doses of the products brought, which induces a dispenser dysfunction, causing a user's dissatisfaction regarding the quality of the wash. In addition, the user is forced to clean the dispenser products boxes and channels, which are often difficult to access as constructed, especially when the dispenser is integrated in the loading hopper of the machine.

Aware of this problem, all manufacturers have sought to provide solutions. The main such solution consisted in making the dispenser boxes removable to facilitate cleaning or making the dispenser completely removable in order to allow it to be cleaned as completely as possible outside the machine. But nevertheless this involved a constraint that was rather poorly accepted by users, which resulted in neglected maintenance of 4hese dispensers due to the difficulties of access to all of the parts concerned, often partially hidden by projecting edges or located in rather inaccessible nooks, since these dispensers were made from several parts welded together and which cannot be dismantled.

The purpose of the present invention is to provide a solution for these disadvantages. This invention, as characterized in the claims, resolves the problem consisting to define a process and create a system that enables, on the one hand, the detergent products dispenser to be easily installed and maintained and, on the other hand, to easily retract the dispenser to facilitate access to the machine drum and seating where the said dispenser is inserted, to perform maintenance on the said dispenser.

The advantages obtained through this invention consist primarily in that the loading hopper door directly seals the dispenser compartments without disturbing the door functioning, while avoiding overflows of detergent products that cause deposits, which are difficult to eliminate after their drying, and in that the easy removal of the dispenser allows, in particular, towards the back of the hopper, the clearance section provided by the hopper to be increased, which is advantageous for loading certain cumbersome parts.

Other characteristics and advantages will appear in the following description of a method of dismountable making of one detergent products dispenser for a top- loading washing machine associated with the loading hopper door of the machine, given as a non-limiting example with regard to the appended drawings where :

- figure 1 shows a top perspective view of the door open loading hopper equipped with the dispenser,

- figure 2 shows a top perspective view of the door open loading hopper without the detergent products dispenser, and

- figure 3 shows an overall perspective view of the detergent products dispenser.

The figures show the loading hopper 10 of a top-loading washing machine, equipped on the back with a detergent products dispenser 30. The detergent compartments 310 to 312 are closed by the loading hopper lid 20 that includes closing seals 21 to 23. The dispenser 30 constitute a removable assembly recessed in a seating 12 arranged in the back part 11 of the ioading hopper 10. In this case, the said dispenser 30 is constantly held against the back wall of the recessed seating 12 by 5 flexible slats 318 and 319.

In examining figure 1 in more detail, one notices that when the hopper lid 20 is open, it includes on its back part, near its articulation 24, raised parts in a flexible material forming seals 21 to 23, each of which takes on the shape of the inlet edges 326 to

10 328 of the detergent compartments 310 to 312 that are made with a certain strip, which facilitates the seals 21 to 23 alignment and the contact with the said inlet edges 326 to 328 when the lid 20 closes. This alignment is facilitated by the constant holding of the dispenser 30 and more particularly its upper part 32 against the back wall of the recessed seating 12, made in the back part 11 of the hopper 10, under the

15 action of the flexible slats 318 and 319, each located at the front and ends of the dispenser 30 and bearing against the front parts 121, 122 of the dispenser recessed seating 12. One notes that, in this way, the good conformability of the seals 21 to 23 is obtained and therefore they are in regular contact, which results in obtaining good water-tightness that is favourable to the complete distribution of the detergent 0 products. One also notes that, given the free recessed fitting of the dispenser 30 in its seating 12, the dispenser 30 can be easily removed from the machine to be cleaned and even refilled without bother.

By referring now to figure 3, showing an overall view of the dispenser 30, one notices 5 that the dispenser 30 includes on the top the inlet edges 326 to 328 made with a certain clearance that facilitates the contact of the closing seals 21 to 23 with the opening of the compartments 310 to 312 of the dispenser 30 and, on the sides and towards the front, the contact of the flexible return slats 318 and 319 of the dispenser

30 against the back of the seating 12 made in the hopper 10. As one can see, the 0 dispenser 30 is very easy to remove from its seating to clean it or to enlarge towards the back the clearance section offered by the hopper 10.

Claims

1. Process for installing and implementing a detergent products dispenser fully integrated with the loading hopper of a top-loading washing machine, characterized primarily in that it consists in installing the said dispenser (30) in the loading hopper (10) of the machine and ensuring its closure by the intermediary of the hopper lid (20).

2. Process according to claim 1 , characterized in that the dispenser (30) is installed by insertion in the back part and in the sides of the opening of the loading hopper (10).

3. Process according to claim 2, characterized in that the dispenser (30) is retained permanently against the bottom of the seating (12) that it is inserted in.

4. Installation and implementation system for a detergent products dispenser associated with the loading hopper of a top-loading washing machine, achieved by applying the process of claims 1 to 3 taken as a whole, characterized in that the loading hopper lid (20) is equipped, on its inside face, with raised parts that follow the shape of the inlet edges (326 to 328) of the respective compartments

(310 to 312) of the detergent products dispenser (30).

5. System according to claim 4, characterized in that the raised parts following the shape of the inlet edges (326 to 328) of the dispenser (30) compartments (310 to 312) are each composed of a seal (21 to 23) in a flexible material with a sufficient relief to ensure the correct closure of the said dispenser (30) compartments (310 to 312) under the pressure applied on them by the hopper lid (20) when it is closed.