ES2560727A1 - Drainage system of a tub of a washing machine and washing machine comprising the system (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Drainage system of a washing tank of a washing machine with a chassis, comprising a motor pump (4) comprising a body (4a) and an electric motor (4d), and which is connected to the washing tub (2) for pumping wash water from the washing tub (2), a drain outlet (4e) of the body (4a) of the motor pump, a drain (5a) accessible from the outside of the washing machine (1) for evacuate residual water to the outside of the washing machine (1), and a plug (7) attachable to the drain (5a), the system comprising a drainage channel extendable in length with a first end comprising the drain ( 5a) and with a second end (5b) connected to the drain outlet (4e) of the body (4a) of the motor pump to evacuate the waste water to the drain (5a). (Machine-translation by Google Translate, not legally binding)

Description

DRAIN SYSTEM OF A CUBA OF A WASHING MACHINE AND WASHING MACHINE UNDERSTANDING THE SYSTEM

TECHNICAL FIELD OF THE INVENTION

The present invention falls within the technical field of washing machines and, particularly, in the sector of the drainage systems of such machines.

BACKGROUND OF THE INVENTION

The washing machines, being also understood as the washing / drying machines, comprise washing tanks comprise a housing in which a washing tank is housed in which, driven by an electric motor, a washing drum rotates. To evacuate the wash water from the tank.

The washing water used is evacuated from the washing tank with the aid of a drainage system comprising a motor pump that receives the water accumulated in the lower part of the washing tank and pumps it through an evacuation duct towards the outside of the machine or, in some machines, alternatively by a recirculation duct whereby the wash water is recirculated, directly or indirectly, towards the washing tank.

To prevent the pipes that evacuate the wash water from the tank from clogging with material, such as fluff, solid pieces, paper scraps, etc. carried away by the wash water evacuated from the tank, removable anti-dirt filters are provided that retain such material, and to allow cleaning of such filters, a drain system is usually provided communicated with a drain mouth accessible from the outside of the machine and sealed by a screw cap, which, in some embodiments forms, a single piece in which the filter is integrated.

In most cases, the motor pump is mounted to the bottom of the chassis of the washing machine and connected to the washing water outlet of the tank through an outlet duct. Washing machines are also known in which the motor pump is incorporated in the washing tank.

In washing machines in which the motor pump is mounted on the chassis of the washing machine, the drain mouth is usually retracted behind a removable or articulated placket that is located at the bottom of the front panel of the washing machine. When the drain cover is opened, the residual water flows through it and spills on the floor, even when it has a container under and in front of it or, when the drain mouth is located very close to the ground, a sponge. On the other hand, in washing machines in which the motor pump is integrated in the washing tank, the amount of waste water is even greater, so that the amount of residual water leaving the drain mouth is even greater.

DESCRIPTION OF THE INVENTION

The present invention has as its object a drainage system of a tank of a washing machine and washing machine comprising the system, which avoid the inconveniences related to the collection of the outgoing residual water through the drain mouth. Other advantageous features of the invention will be apparent from what is

described hereinafter in this specification. The term "washing machine" used here refers to washing machines, drying machines, and washing machines / clothes dryers. According to the invention, the drain system of the washing tank of the

The washing machine comprises a motor pump comprising a body and an electric motor, and which is connected to the washing tank to pump washing water from the washing tank, a drain outlet of the motor pump body, a drain mouth accessible from the outside of the washing machine to evacuate waste water to the outside of the washing machine, and a plug attachable to the mouth of

15 drain to seal the drain pipe, characterized in that it comprises a length-extending drain pipe with a first end comprising the drain mouth and with a second end connected to the drain outlet of the motor pump body to evacuate the waste water outside the washing machine.

20 The extendable drain duct allows residual water to accumulate inside it when it is extended, and to have the drain mouth in a position away from the washing machine in which a container can be placed under it, once opened the plug, you can collect waste water from the washing machine.

On the other hand, the washing machine according to the invention comprises a washing tank and a drainage system with at least the characteristics described above and below.

The motor pump body can be mountable in the chassis of the washing machine, it can be mounted on a lower front part in the washing tank, or it can be preferably molded with at least one lower front part the tank

30 washing in one piece, preferably so that it protrudes inferiorly from the lower front part of the washing tank. The front part can be, for example, one of the pieces that make up the washing tank, which is called the "front tank". In embodiments in which the motor pump body is mounted or

35 molded together with the front or with the entire wash tank, the drain mouth is achieved at a higher height than when the pump is mounted on the chassis, which results in the user being able to access the drain mouth and perform the drain more comfortably.

On the other hand, the molding of the wash tank and the motor pump body in one piece reduces the level of vibrations and offers a safer connection as regards the tightness between the tank and the motor pump body.

Preferably, the electric motor of the motor pump of the drain system is mounted at one end of the motor pump body, opposite to the drain outlet.

In a preferred embodiment, the extendable drain line is configured as a bellows. According to this embodiment, the bellows can be configured so that it is stretched when the plug is turned in a first direction, for example by a helical configuration of turns thereof.

The drain mouth at the first end of the bellows may comprise a cylindrical inner surface provided with an inner thread to screw the plug, or a cylindrical outer surface provided with outer filleting to screw the plug. On the other hand, the second end of the drain line may be removably connected to the drain outlet of the motor pump.

The drain outlet of the motor pump body can communicate with an internal cylindrical chamber that extends axially in the motor pump body and which comprises an internal surface provided with a filleting. In this embodiment, the plug comprises a first end portion that seals the drain mouth and a second end portion adapted to thread into the filleting.

In the interior space an anti-dirt filter can be removably disposed that can be retained at one of its ends by the second end part of the cap, or can be part of the cap and extend from the second end part of the cap through the cylindrical chamber.

The removable connection of the second end of the drain pipe to the motor pump body allows, on the one hand, to remove the drain pipe filled with residual water and pour the waste water in a desired place and, on the other, its removal facilitates access to the filter anti-dirt and the extraction and reinsertion of the same and access to the inside of the motor pump body to be able to perform maintenance or repairs. It also facilitates the replacement of the bellows which may be made, for example, of plastic material or paper rubber, and may be of a disposable material or of a material suitable for repeated use.

BRIEF DESCRIPTION OF THE FIGURES

Aspects and embodiments of the invention are described below on the basis of schematic drawings, in which

Figure 1 is a schematic view in partially sectioned side elevation of a washing machine incorporating an embodiment of the system according to the invention;

Figure 2 is a front elevational view of the wash tank and the drain system shown in Figure 1;

Figure 3 is a longitudinal sectional view of a first embodiment of the drainage system according to the invention;

Figure 4 is a longitudinal sectional view of a second embodiment of the drainage system according to the invention;

Figure 5 is a longitudinal sectional view of the motor pump body;

Figure 6 is a partial and enlarged view of the washing machine shown in Figure 1, with the drain bellows extended;

Figure 7 is a perspective view of the drain drain removed.

HOW TO MAKE THE INVENTION

Figure 1 shows a washing machine 1 with a housing 1 a comprising a front panel -1 b and an upper cover 1 c. The front panel 1 b is provided with a loading port 1d sealed by a loading door l e. The washing machine rests on support legs 1 f.

Inside the washing machine 1 a washing tank 2 is housed whose loading opening 2a is horizontally aligned with the loading mouth 1d. The edges of the loading opening 1d and the loading opening 2a are connected by an annular flange 3 of elastic material. The inner space 2b of the tank 2 conventionally houses a rotating washing drum (not shown in the figures). The tank is composed of a front part 2c and a rear part 2d which can also be referred to respectively as "front tank" and "rear tank", assembled together in a conventional manner.

The bottom 2e of the washing tank 2 has a drop in the direction of the front panel lb of the washing machine 1. In the lower part of that fall is the water drain outlet 2f of the washing tank 2 to which the body 4a of the motor pump 4 is connected by means of a connecting piece 4b through which an evacuation passage (not shown in figure 1) extends through which washing water from the tank 2 flows into the body 4a of the motor pump 4. The motor pump 4 is propelled by an electric motor 4d mounted at the rear of the body 4a.

From the rear side part of the body 4a of the motor pump 4, a connecting tube 4c can be connected to which a conventional drain pipe (not shown in the figures) can be connected for the evacuation of wash water.

The front part 2c of the washing tank 2 and the body 4a of the motor pump 4 with its connecting piece 4b and the connecting tube 4c are molded in one piece.

To the front of the body 4a of the motor pump 4 is a length-extending tube, specifically a bellows 5, which comprises a first end comprising a drain mouth 5a sealed by a plug (not shown in Figure 1, and a second end 5b connected to the drain outlet (not shown in figure 1) of the front part of the motor body 4a 4 perimeterly hugging that front part and secured by a clamp 6 that surrounds said second end 5b and presses it against the front of body 4a of motor pump 4 ..

The bellows 5 is retracted by a flap 1 h between a closed position and an open position 1 h 'in which the bellows 5 is accessed from outside the washing machine.

Figure 2 is a front view of the front part 2c of the washing tank 2 with its loading opening 2a, of the pump 4 with its connecting piece 4b, its connecting tube 4c and its electric motor 4d, as well as of the bellows 5 with its drain mouth 5a, and of the plug 7 that seals the drain mouth 5a.

In its outer part, the plug 7 comprises a diagonal rib 7a that facilitates the manipulation when turning the plug 7

In the embodiments of the drainage system according to the invention illustrated in Figures 3 and 4, the drain mouth 5a of the bellows 5 comprises a cylindrical inner wall 5c provided with a thread 5d and a front widening Se at whose rear part It houses an O-ring seal 8. In turn, the second end 5b of the bellows 5 embraces the front part of the motor body 4a perimeter and is pressed against it by means of the clamp 6 so that the bellows 5 is coupled to the drain outlet 4e of the body 4a of the motor pump ... Between the drain mouth 5a and the second end 5b extend the folds 5f of the bellows 5 surrounding an internal passage 5g. The bellows 5 is configured in such a way that its folds 5f form turns as a helical spring.

The drain outlet 4e communicates with an internal cylindrical chamber 4f in the body 4ade of the motor pump. The cylindrical chamber 4f comprises an internal surface 4g provided with a filleting 4h close to the drain outlet 4e. Within said cylindrical chamber 4f a dirt filter is housed g. The cylindrical chamber 4f is in communication, through the passage of evacuation 4i in the connection piece 4b, with the inside of the washing tank 2.

In both embodiments illustrated in Figures 3 and 4, the plug 7 comprises a first discoidal end portion 7b that is sized to seal the drain mouth 5a of the bellows 5, and a second end portion 7c adapted to thread into the filleting 4h of the surface internal 4g of the cylindrical chamber 4f of the motor pump body 4a.

On the front face of the first end part 7a of the plug 7 is the diagonal rib 7a mentioned above, while its rear part has a transition section 7d towards a discoidal part -7e that has a smaller diameter than the first end part 7b and which It has a perimeter edge 7f adapted to thread on the thread Sd of the drain mouth 5a of the bellows 5.

In the embodiment illustrated in Figure 3, a cylindrical intermediate part 7g of substantially smaller diameter than the other parts of the plug 7 extends between the discoidal part 7e and the second end part 7c, and the second end part 7c comprises another 7h perimeter edge that threads in the thread 4h of the front part of the motor pump body 4a.

The fillet 5d, the thread 4h and the edges 7f, 7h are arranged and dimensioned in such a way that, when the plug 7 rotates in a first direction, first the edge 7h of the second end part 7c, due to the helical configuration of the folds 5f of the bellows 5 which allows a relative rotation between its drain mouth 5a and its second end 5b, is unscrewed and released from the thread 4h, so, once loose from the thread 4h that the user can pull the diagonal nerve 7a and / or from the drain mouth 5a to stretch the bellows 5.

In turn, when the plug 7 screwed into the drain mouth 5a so that its first part 7b is housed in the front widening 5e and its transition section 7d imprisons the O-ring 8. the rotation of the plug and, thereby, From the drain nozzle 5a, the helical configuration of the folds 5f of the bellows 5 allows the edge 7h of the second end portion 7e of the screw cap and to be immobilized in the thread 4h of the cylindrical chamber 4f of the motor body 4a.

In the embodiment illustrated in Figure 4, the second end portion 7c of the cap 7 comprises turns 7c emerging from the end part of a cylindrical cylindrical part 7j emerging axially from the rear face of the discoid part 7e. These turns 7i are complementary to the filleting 4h of the front part of the body 4a of the motor pump.

The filleting 5d, the thread 4h as well as the edge 7f and the turns 7i of the plug 7 are arranged and sized such that, when the plug 7 rotates in a first direction, first the turns 7i of the second end part 7c, due to the helical configuration of the folds 5f of the bellows 5 which allows a relative rotation between its drain mouth 5a and its second end 5b, they are unscrewed and released from the thread 4h, so that, once the turns 7i are released, the user you can pull the diagonal nerve 7a and / or the drain mouth 5a to stretch the bellows 5.

In turn, when the plug 7 screwed into the drain mouth 5a so that its first part 7b is housed in the front widening 5e and its transition section 7d imprisons the O-ring 6. the rotation of the plug and, thereby, From the drain mouth 5a, the helical configuration of the folds 5f of the bellows 5 allows the turns 7i of the second end part 7e of the cap to screw and immobilize in the thread 4h of the cylindrical chamber 4f of the motor body 4a.

Figure 5 shows the arrangement of the dirt filter 9 inside the cylindrical chamber 4f of the motor pump body 4a. The dirt filter 9 is shaped as a "diabolo" and comprises two conical halves joined by their respective vertices. At its base, the conical halves

they comprise stiffener rings 9a, 9b that are in contact with the internal surface 4g of the cylindrical chamber 4f The axial displacement of the filter 9 in the cylindrical chamber 4f is delimited between an annular shoulder 4j neighboring the rear stiffener ring 9b and the second end part 7c

5 (not illustrated in Figure 5) of the cap when it is inserted in the cylindrical chamber 4f. The dust filter 9 is removable and reinsertable by the drain outlet 4e of the motor pump body 4a 4a.

In figure 6 a first stage of drainage of residual water of the motor pump 4 and, where appropriate, of the interior space 2b of the washing tank 2 can be seen

10 To reach the position of the bellows 5a illustrated in figure 7, first of all the flap 1h is opened (see figure 1) to adopt the position 1h '. Then the cap is rotated (see figures 3 and 4) until it is released from the body 4a of the motor pump 4, and then the drain mouth 5a is pulled by stretching the bellows 5 until it comes out of the washing machine , and remain in the position illustrated in the

15 figure 6, in which the residual water flows to the drain mouth 5a.

In that position and depending on the amount of wastewater to be evacuated, it is possible to choose to have a container 10 under the drain mouth 5a and open the stopper so that it collects the residual water in the container 10, or, if the amount of waste water is low, release the bellows 5 of the motor pump body 4a, so that the

20 residual water is stored in the bellows 5, remove all the bellows keeping it with its second end 5b upwards (see figure 7), and pour the waste water in a chosen place.

List of reference symbols

1st

1 B

1e

1d

1e

1f

1h, 1h '

2nd

2b

2e

2d

2e

2f

4th

4b

4e

4d

4e

4f

4g

4h

5th

5b

5e

5 d

5e

5f

7a

7b

7e

7d

7e

7f

7g

7h

7i

7j

9a, 9b

machine washing machine housing front panel top cover loading mouth loading door support legs inside the machine washing machine placket washing tank loading opening interior space front rear bottom evacuation outlet annular flange motor pump motor pump body connecting part tube connector

electric motor drain outlet cylindrical chamber internal surface filleting bellows drain mouth second end inner wall cylindrical thread front widening folds clamp plug diagonal rib first first end part second transition part discoidal part perimeter edge intermediate part perimeter edge turns cylindrical part o-ring dirt filter stiffener rings

Claims (12)

1. Drain system of a washing tank of a washing machine with a chassis, comprising a motor pump (4) having a body (4a) and an electric motor (4d), and which is 5 connected to the wash tank (2) to pump wash water from the wash tank (2), a drain outlet (4e) of the motor pump body (4a), a drain outlet (5a) accessible from the outside of the washing machine (1) to evacuate waste water outside the washing machine (1), 10 a plug (7) attachable to the drain mouth (5a), characterized in that it comprises a drain pipe extending in length with a first end comprising the drain mouth (5a) and with a second end (5b) connected to the drain outlet (4e) of the motor pump body (4a) for 15 Evacuate the wastewater to the drain (5a). 2. Drain system according to claim 1, characterized in that the motor pump body (4a) is mountable in the chassis of the washing machine (1). A drainage system according to claim 1, characterized in that the body (4a) of the motor pump is mounted in the washing tank (2). 4. Drainage system according to claim 1, characterized in that the body (4a) of the motor pump and at least a part (2c) of the washing tank (2) are molded in one piece. 5. Drain system according to claim 4, characterized in that the body (4a) of the motor pump is molded protruding inferiorly from the part (2c) of the washing tank (2). 6. Drainage system according to any one of claims 1 to 5, characterized in that the drain conduit is configured as a bellows (5). A drain system according to claim 6, characterized in that the bellows (5) is configured so that it stretches when the plug (7) is turned in a first direction.

8.

Drain system, according to any one of claims 1 to 7, characterized in that the drain mouth (5a) comprises a cylindrical inner wall (Se) provided with an inner thread (5d) for screwing the lapon (7).

9.

Drain system according to any one of the preceding claims, characterized in that the second end (5b) of the drain line is removably connected to the drain outlet (4e) of the motor pump body (4a).

10.

Drain system according to any one of the preceding claims, characterized in that the drain outlet (4e) of the motor pump body (4a) communicates with an internal cylindrical chamber that extends axially in the motor pump body (4a); the cylindrical chamber (4f) comprises an internal superstice (4g) provided with a filleting (4h); The plug (7) comprises a first end part (7b) that seals the drain mouth (5a) and a second end part (7c) adapted to thread into the filleting (4h).

eleven.

Drain system according to claim 10, characterized in that it comprises a removable dirt filter (9) disposed in the cylindrical chamber (4f) and retained in the cylindrical chamber (4f) by one of its ends by the second end part (7c ) of the cap (7).

12.

Drain system, according to claim 10, characterized in that it comprises an anti-dirt filter (9) that extends from the second end part (7c) of the cap (7) through the cylindrical chamber (4f) and which is part of the cap ( 7).

13.

Drain system according to any one of the preceding claims, characterized in that the electric motor (4d) of the motor pump is mounted on one end of the body (4a) of the motor pump, opposite to the drain outlet (40).

14.

Washing machine comprising a washing tank (2) and a drain system, characterized in that the drain system is defined in any one of claims 1 to 13.