FR2573300A3 - HOUSEHOLD DISHWASHER EQUIPPED WITH FILTER FOR FILTRATION OF WORKING FLUID - Google Patents

Abstract

THE INVENTION RELATES TO HOME APPLIANCES. IN THIS APPLIANCE, EQUIPPED WITH A WASHING TANK ACCESSIBLE BY A LOADING DOOR, A VERY FINE MESH FILTER IS PLACED DURING AT LEAST PART OF THE RINSING PHASE, FROM A NORMAL REST POSITION TO A WORKING POSITION IN WHICH IT CAN FILTER THE WORKING LIQUID. THIS FILTER 7 IS AVAILABLE AT THE LEVEL OF THE SURFACE 3 OF THE DOOR 2 WHICH IS DIRECTED TOWARDS THE INSIDE OF THE WASHING TANK 1 WHEN THE DOOR IS IN THE CLOSED POSITION. MAIN APPLICATIONS: HOUSEHOLD DISHWASHER.

Description

The present invention relates to a washing machine

  household crockery in which the liquid working

  thrown on the items to be washed by a circulation pump.

  tion is at least partially filtered to prevent

  purities to redeposit themselves on the articles. It is already known, for example, by the patent

  0 046 201 that, in order to obtain a definitive result

  effective washing, it is preferable not to

  filter to a constant intermediate degree the fluid

  all the prewash, wash and rinse phases, but only to pass the working liquid through a very fine filter only in

  the last rinse phase. This can be achieved automatically

  using an interpolating

  se in the hydraulic circuit of the machine and controlled

by the programmer.

  Instead of diverting the flow of working fluid

  However, it is preferable, as described in Swiss Patent No. 445,746, to have a movable filter between the bottom of the wash tub and the suction of the wash pump, which can be selectively inserted.

in the flow of water in circulation.

  This solution is relatively complicated, and

  especially unreliable because of the arrangement of the

  be in an area of the machine that is not visible and

  is difficult to access for the user. At the

  milk, the very fine filter tends to clog fast-

  ment, so that it must be cleaned frequently.

  The object of the present invention is therefore to

  set up a household dishwasher equipped with a filter for the working liquid which has a very fine mesh,

  which is automatically visible at each wash cycle

  ge and easily accessible to the user for the net-

toyage.

  This goal is achieved in a household dishwasher.

  including a wash tub which can be ac-

  give way through a loading door, and that contains

  support means for articles intended to be

  with liquid working during at least one phase

washing and / or rinsing.

  A very fine mesh filter can come

  during at least part of the rinsing phase,

  from normal position or rest to a working position

  vail in which he can filter the liquid work-

  lant. According to the invention, the very fine mesh filter is disposed at the level of the surface of the door which is

  towards the inside of the wash tub in the

closing position.

  The attached drawing, given only

  as an example, it will make clear how

vention can be realized.

  This figure shows schematically in section a side view of a preferred embodiment of the invention.

  dishwashing machine according to the invention, whose door is

  green. The dishwasher basically consists of a cu-

  washing 1 accessible through a charging door-

  front 2 equipped with a counter door 3, that is to say

  of a surface which is directed towards the inside of the

  when the door is in the closed position (

felt in broken lines).

  In a manner known per se, it is provided for in the

  inside the tank 1 of the carrying baskets 4 which carry

  articles to be washed, as well as hydraulic turnstiles

  5 for the purpose of spraying articles with

  valiant during the operation of the machine.

  A circulation pump 6 whose suction side

  is equipped with a protective grid, is adapted to feed the turnstiles 5 in working liquid

  taken on the bottom of the wash tub.

  On the bottom of the door 3 is hinged, at least one filter 7 very fine mesh, which can be

  maneuvered by the programmer 8 of the machine (for example

  through a relay or equivalent, not shown) to move between a normal rest position and

  a working position. In a preferred embodiment

  the filter 7 has a substantially flat surface

  and, in the rest position, it is adapted to

  pliquer against the surface of the door-door 3, so that it does not risk being clogged, despite its mail-

  the very fine, by the dirty water with which he enters

you are in touch.

  On the contrary, in the working position, the

  filter 7 deviates from the counter door 3, as we have

presented on the drawing.

  In the traditional embodiment, the

  dishwasher can perform, under the control of the program-

  mateur 8, at least one wash phase (optionally

  preceded by at least one pre-wash) and / or at least one

  rinse. In particular, the filter 7 with a very fine mesh

  fine is placed only during all or part of the rinse

  ge, in its working position, in which it filters

  part of the veil of liquid projected by the

  5 and flowing by gravity along the surface of the

  The rinsing water is thus substantially finely filtered, thereby providing the advantages listed in the aforementioned Italian Patent No. 1,046,201. In addition, the filter 7 has the advantage of being visible and conveniently accessible to the user for periodic cleaning each time that one opens

  door 2 at the end of the machine work cycle.

  According to a preferred embodiment, to facilitate

  core cleaning of the filter 7, this filter is hinged to the door 2 in a removable manner, for example, by a snap.

  It goes without saying that various modifications

  be brought by the skilled person to the mode of

  tion which has just been described by way of non-limiting example, in particular by substituting the equivalent technical means, without for

framework of the invention.

Claims (4)

R E V E N D I C A T I 0 N S   1 - Domestic dishwasher comprising a washing tub accessible through a loading door and which contains support means for articles intended to be sprayed with liquid working during at least one washing and / or rinsing phase, at least one very fine mesh filter which can be placed during at least part of the rinsing phase,   from a normal position or rest to a working position   vail in which he can filter the liquid work-   characterized in that the very fine mesh filter (7) is arranged at the surface (3) of the door   (2) which is directed towards the interior of the lavatory bowl   ge (1) in the closed position.   2 - Dishwashing machine according to the claim   1, characterized in that the mesh filter (7)   very fine is mounted on the door (2) removably.   3 - Dishwashing machine according to the claim   1, characterized in that the mesh filter (7)   very thin surface has a substantially flat surface   to apply against said surface (3) of the door   te (2) when in the home position.   4 - Dishwashing machine according to the claim   3, characterized in that the fine mesh filter (7) is hinged to the door (2) and in that   in his working position, he is removed from face (3) of the door.