ES2395560T3 - Liquid product distribution device - Google Patents

Abstract

The device has a pumping chamber (21) for pumping a liquid product and provided in communication with a liquid product tank. A hydraulic pressure chamber (22) is connected to a water supply conduit (42). A pump body (20) includes a piston (23) mounted in translation between the pressure chamber and pumping chamber. The pump body has a communication orifice (26) communicating between the pressure chamber and pumping chamber.

Description

Liquid product distribution device

The present invention relates to a liquid product distribution device.

In particular, it finds its application in washing machines and domestic dishwashers.

It is applied more particularly to the distribution of liquid or semi-liquid detergent (gel type) in the field of domestic washing appliances.

It is also applied to the distribution of different liquid products in the ford or rinse phases put into practice in domestic washing machines, and for example to the distribution of a rinse or salt product in liquid form in a dishwasher.

The liquid product distribution device may also be adapted to distribute a softener in a rinse phase implemented in a washing machine.

It is important to be able to distribute regularly during a wash cycle doses of liquid product in a washing tank of an apparatus for washing clothes or dishes.

In particular, when the detergent is liquid or semi-liquid, it is important to be able to automatically distribute one or several predefined detergent doses, taken from a tank.

Particularly known in document FR 2 372 265 is a dosing apparatus for introducing a dose of liquid product into a stream of water.

This apparatus comprises a detergent pumping part and a driving part comprising two hydraulic pressure chambers alternately fed in order to perform the reciprocating displacement of a piston of the detergent pumping chamber.

However, in this type of apparatus, the water circulation circuit and the detergent circulation circuit are separated, the dilution of the detergent being carried out in the water stream at the exit of a detergent transfer conduit, very downstream of The pumping chamber.

In particular, such an apparatus cannot be applied to a detergent of significant viscosity.

On the other hand, at the end of the cycle, a part of the detergent remains in the pumping chamber and the distribution transfer conduit.

In addition to the progressive fouling of the apparatus and the risks of plugging the detergent transfer conduit, the residual detergent can degrade and accumulate and disturb the conditions of a subsequent wash, particularly if the use of the machine is infrequent.

Also known is a continuous mixing system of detergent and water described in EP 0 849

391. Such a system continuously mixes water with the detergent pumped in such a way that it is not possible to precisely dose the amount of detergent.

The present invention has as or objective to solve the aforementioned drawbacks and propose a liquid product distribution device that allows an improved distribution of the product in a stream of water while increasing the reliability of the operation of the device.

For this, the present invention relates to a liquid product distribution device comprising a liquid product pumping chamber in communication with a liquid product reservoir, a hydraulic pressure chamber connected to water supply means, and a pump which has a piston mounted in translation between the hydraulic pressure chamber and the liquid product pumping chamber.

According to the invention, the pump comprises a communication orifice between the hydraulic pressure chamber and the liquid product pumping chamber, the communication orifice sealing means being adapted to adopt a sealing position and an opening position of the orifice. communication, the sealing means being in the opening position only at the end of the piston stroke in the liquid product pumping chamber.

Thanks to a communication hole between the hydraulic pressure chamber and the liquid product pumping chamber, the distributed water passes through the pumping chamber and partly dilutes the liquid product to drag it into the washing tank.

Thus, the distribution of a liquid product is made more easily by dilution, at least partially, of it.

On the other hand, when the pumping chamber is crossed by a stream of water, the product residues are less important, even they are suppressed at the end of the liquid product distribution cycle.

Indeed, the communication orifice only admits water in the pumping chamber at the end of the piston stroke in such a way that the water introduced allows a perfect rinse of the pumping chamber at the end of the distribution of a product dose liquid.

According to an advantageous feature of the invention, the liquid product pumping chamber is in communication with an evacuation chamber adapted to connect to a washing tank, a non-return valve being mounted in the evacuation chamber facing with a product passage hole. liquid between the liquid product pumping chamber and the evacuation chamber.

Thus, the product can be diluted in the evacuation chamber as soon as it leaves the pumping chamber, facilitating its transfer to the washing tank.

The present invention also refers to a domestic washing machine, of the dishwasher or washing machine type, comprising a liquid product distribution device according to the invention.

Other particularities and advantages of the invention will be further derived from the following description.

In the attached drawings, given by way of non-limiting examples:

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 Figure 1 is a schematic side view showing a laundry machine equipped with a liquid product distribution device according to the invention;

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 Figure 2 is a longitudinal sectional view of a liquid product distribution device according to an embodiment of the invention, in a rest position;

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 Figures 3 and 4 are views analogous to Figure 2, showing the liquid product distribution device in a liquid product distribution phase; Y

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 Figure 5 is a view analogous to Figure 2, showing the liquid product distribution device in one phase

of aspiration of liquid product. It will be described first and with reference to figure 1 or a machine 1 for washing clothes equipped with a Liquid product distribution device according to the invention.

It should be noted that the use of the liquid product distribution device according to the invention is not limited to the application in a washing machine, but it can be applied in any type of washing machine, and specifically in a dishwasher or washer dryer.

By way of non-limiting example, the washing machine shown in Figure 1 is a top-loading washing machine. Obviously, the present invention is applied analogously to a front-loading washing machine. Classically, the washing machine 1 comprises a housing 2 adapted to accommodate a washing tank 3 in which it is

mounted on rotation a drum 4 intended to contain the clothes. The housing 2 comprises in this embodiment an upper opening 5 which allows the clothes to be introduced and removed in the drum

Four.

This access opening 5 can be sealed during operation of the machine by a door 6 mounted on pivoting way in the casing 2 of the machine. Obviously, this washing machine 1 comprises all the necessary elements (not shown) for the

operation and execution of the cycles of washing, rinsing and spinning of clothes. According to the invention, this washing machine 1 comprises a liquid product distribution device 10. In this embodiment, the liquid product distribution device 10 is arranged in the lower part of the machine,

in the vicinity of the front wall 2a of the housing 2 of the machine 1, that is, in the vicinity of the front

of the machine In this case, the liquid product distribution device 10 is a detergent distribution device adapted to distribute one or several doses of detergent used during the laundry phases.

For this, this detergent dispensing device 10 is connected by a conduit 11 to the tank 3 of

washing allowing the introduction of a dose of detergent in the washing water present in the tank. On the other hand, in order to feed the detergent dispensing device 10 with detergent, it is connected through a second conduit 12 to a detergent tank 13 housed inside the washing machine 1.

In this embodiment, and in no way limiting, the detergent tank 13 is formed against the front wall 2a of the machine housing 2.

In order to allow its filling by the user, this tank 13 comprises an access opening 14, sealed by a plug 15, which ends, for example, at the top of the machine 1.

In this embodiment, the opening 14 and the cap 15 are arranged at the level of the access opening 5 of the housing 2 in order to be accessible to the user as soon as the access door 6 is opened.

Obviously, the access to the tank 13, which allows its filling by the user, could be carried out in any other place of the housing, by means of a trapdoor independent of the door 6 of access to the tank 3 and the drum 4.

Preferably, the reservoir 13 has a sufficient capacity to hold one or several liters of liquid or semi-liquid detergent.

Thus, the user can fill the tank 13 for several washing cycles.

Preferably, the volume of the reservoir 13 can correspond substantially to the classic volume of liquid or semi-liquid detergent drums commercially available.

A detergent dispensing device 10 according to an embodiment of the invention will now be described in reference to Figure 2.

The detergent dispensing device 10 as shown in Figure 2 comprises a pump body 20 in which essentially the pumping of a dose of detergent is performed.

This pump body 20 has a substantially cylindrical longitudinal shape and comprises at one end a detergent pumping chamber 21 and at the other end a hydraulic pressure chamber 22.

A piston 23 is disposed inside the pump body 20 between the detergent pumping chamber 21 and the hydraulic pressure chamber 22.

This piston 23 is mounted in translation inside the pump body 20 according to the longitudinal direction of the detergent dispensing device 10.

The detergent pumping chamber 21 is in communication with the detergent tank 13 described above through the conduit 12. Between the arrival of this conduit 12 and the detergent pumping chamber 21, a check valve 30 is mounted. This non-return valve 30 comprises a valve seal 31 slidably mounted on a valve stem 32, a valve spring 33 being disposed between the valve seal 31 and the valve body 30.

In the rest position, the valve spring 33 holds the valve seal 31 against a hole 12a of the detergent feed line 12 in order to seal this line 12.

The check valve 30 is connected by a passage 34 to the detergent pumping chamber 21.

The hydraulic pressure chamber 22 is connected to water supply means that allow this hydraulic pressure chamber 22 to be supplied with pressurized water.

In this embodiment, the hydraulic pressure chamber 22 is connected to the water arrival means by means of an intake chamber 40 that communicates with the hydraulic pressure chamber 22 through a water passage hole 41.

The water intake chamber 40 is connected to a water supply through a conduit 42.

Preferably, this conduit 42 is connected to the general water supply (not shown) of the washing machine.

Thus, the operation of the detergent distribution device is put into practice from the pressure of the water in the supply network, generally between 1 and 10 bars.

Obviously, this detergent dispensing device could also operate with water at a pressure of less than 1 bar.

At least one non-return valve 43 is mounted in the intake chamber 40 facing the means of arrival of water.

In order to improve safety, a second non-return valve (not shown) can be added in series with the non-return valve 43.

More specifically, the non-return valve 43 comprises a valve seal 44 adapted to, in the rest position, seal a water orifice 45 from the supply line 42 and which flows into the intake chamber 40.

Classically, the non-return valve 43 comprises a valve spring 46 disposed between the body of the valve 43 and a wall of the intake chamber 40.

On the other hand, the intake chamber 40 comprises an exhaust port 47 adapted to be in communication with the hydraulic pressure chamber 22 when the arrival of water is cut off.

For this, the valve 43 comprises a sealing part 43a in which a gasket 48 is mounted.

This sealing part 43a and the gasket 48 are mounted facing each other with a conduit 49 made in the body of the intake chamber 40 and into which the exhaust hole 47 flows.

In this embodiment, the valve spring 46 is mounted around a rod 43b integral with the body of the valve 43 extending inside the conduit 49.

The exhaust port 47 is connected by a conduit 16 (shown only in part in Figure 2) to a return port that will be described later.

Returning to the pump 20 and the piston 23 mounted in translation between the hydraulic pressure chamber 22 and the detergent pumping chamber 21, a piston seal 24 is disposed at the periphery of the piston 23 and comes into contact with an internal face of the body of piston 20, in order to guarantee the seal between the hydraulic pressure chamber 22 and the detergent pumping chamber 21.

On the other hand, a spring 25 is mounted inside the detergent pumping chamber 21. This spring 25 therefore acts in conjunction with an end wall 21a of the detergent pumping chamber and a wall 23a of the piston 23.

According to the invention, the pump comprises a communication hole 26 between the hydraulic pressure chamber 22 and the detergent pumping chamber 21.

This communication hole 26 is made through the piston 23 that separates the hydraulic pressure and detergent pumping chambers.

In this embodiment, the communication hole 26 is made in a secondary piston body 50 integral with the piston 23.

In this case, the body 50 of the secondary piston extends inside the piston 23 between an end face 23b of the piston 23 that delimits the hydraulic pressure chamber 22 and a second end face 23c of the piston 23 that delimits the chamber 21 of detergent pumping.

The communication hole 26 is made at one end 51 of the body 50 of the secondary piston which drains substantially at the level of the second end face 23c of the piston 23.

A water passage hole 23d is also provided in the wall 23b of the piston 23 and flows into the body 50 of the secondary piston.

In this secondary piston body 50 a secondary piston 52 is mounted in translation. A secondary piston spring 53 is mounted between the secondary piston 52 and the first end face 23b of the piston 23.

The secondary piston 52 comprises a finger 54 adapted to extend protrudingly in the communication hole 26.

Sealing means of this communication hole 26 are adapted to act in conjunction with the secondary piston finger 54.

In this exemplary embodiment, the sealing means comprise a toric seal 55 mounted around the secondary piston finger 54 and supporting a flange of the secondary piston 52.

In the rest position, the spring 53 of the secondary piston 52 maintains the sealing means formed by the seal 55 around the finger 54 in a sealing position of the communication hole 26.

In a distressing position of the communication hole 26, the piston finger 54 is adapted to act in conjunction with the wall 21a of the detergent pumping chamber 21 in order to separate the seal 55 from the seal Communication 2 6 for displacement of the piston 52 s secondary to the elastic recovery force exerted by the spring 53.

Thus, the sealing means of the communication hole 26 comprising the seal 55 are in an open position when the piston 23 is substantially at the end of the run in the detergent pumping chamber 21 such that the finger 54 of the secondary piston 52 comes into contact with the wall 21a of the detergent pumping chamber.

On the other hand, the detergent pumping chamber 21 is in communication with an evacuation chamber 60 adapted to connect to the washing tank 3.

To this end, the evacuation chamber comprises an outlet opening 61 that communicates with the conduit 11 thus connecting the detergent dispensing device to the washing tank 3.

A non-return valve 62 is mounted on the evacuation chamber 60 facing a detergent hole 63 arranged between the detergent pumping chamber 21 and the evacuation chamber 60.

In this embodiment, the orifice 63 is made in the thickness of the wall 21a of the pumping chamber 21.

In this embodiment, the evacuation orifice 63 is an orifice constituted by two semiannular crowns comprising in its center a wall part 21a� adapted to act in conjunction with the finger end 54 of the secondary piston 52.

Classically, the valve 62 comprises a valve joint 64 and is mounted against the action of a recovery force exerted by a spring 65 mounted between the body of the valve 62 and a wall 60a of the evacuation chamber 60.

On the other hand, the evacuation chamber 60 comprises a return hole 66 adapted to communicate through a conduit 16 with the exhaust port 47 of the intake chamber 40.

The communication of the exhaust orifice 47 of the intake chamber 40 and the return orifice 66 of the evacuation chamber 60 can be carried out by using a flexible tube that forms the conduit 16.

Alternatively, the passage of water from the intake chamber 40 to the evacuation chamber 60 can be carried out thanks to a water circulation pipe integrated into the pump body 20.

The pump body 20, the intake chamber 40 and the evacuation chamber 60 can be made in one piece.

or from several parties solidarity by screwing.

The operation of the detergent dispensing device according to the embodiment described above will now be described, in reference to Figures 3 to 5.

When a dose of detergent is to be distributed, the water feed is opened and the water without pressure is introduced at the level of the water arrival 42 in the intake chamber 40.

In addition to the effect of the water pressure, which leads to the level of the opening 45 of the legacy, the non-return valve 43 is pushed against the effect of the spring 46 such that the valve seal 44 is separated from the opening 45 allowing a if the introduction of the year into the admission chamber. Simultaneously, under the effect of the displacement of the valve 43, the sealing part 43a of the valve and the seal 48 seal the conduit 49 and thus prevent the passage of water through the exhaust port 47.

The water introduced into the intake chamber 40 then passes to the level of a through hole 41 inside the hydraulic pressure chamber 22.

The pressurized water introduced in the hydraulic pressure chamber 22 acts against the wall 23b of the piston 23 in order to move the latter in translation inside the piston body 20 against the elastic recovery force of the spring 25 held in support against the wall 21a of the detergent pumping chamber 21.

At the start of the stroke of the piston 23, the secondary piston 52 is maintained in the resting position inside the secondary piston body 50 such that the sealing gasket 55 mounted around the finger 54 seals the communication hole 26.

Thus, the passage of the guide between the hydraulic pressure chamber and the detecting boiler chamber is carefully avoided at the start of the piston stroke 23. The sealing is also guaranteed thanks to the seal 24 mounted around of the piston body 23.

Garlic

the effect of the displacement of the piston 23, the detergent dose contained in the detergent pumping chamber 21 is pushed, specifically under the effect of the wall 23c of the piston 23, and is evacuated through the hole 63 of the detergent passage to the chamber 60 evacuation.

Garlic

 The effect of the pressure exerted by the piston 23 on the detergent, the non-return valve 62, and specifically the valve seal 64, is pushed into the evacuation chamber 60 against the elastic recovery effort exerted by the valve spring 65 .

The detergent can then be evacuated through the drain hole 61 and the duct 11 in the direction of the wash tank 3.

At the end of the stroke of the piston 23 in the pump 20, the secondary piston finger 54 comes into contact with the end wall 21a of the pumping chamber 21.

This contact of the secondary piston finger 54 has the effect of pushing the secondary piston 52 into the secondary piston body 50 against the effect of the elastic recovery force exerted by the spring 53.

The displacement of the secondary piston 52 has the effect of separating the seal 55 mounted around the finger 54 of the communication hole 26.

The pressurized water in the hydraulic pressure chamber 22 then passes through the wall 23b of the piston 23 at the level of the hole 23d and passes through the secondary piston body 50 to flow through the communication hole 26.

This introduction of water into the detergent pumping chamber at the end of the stroke of the piston 23 makes it possible to facilitate the evacuation of the detergent in the direction of the evacuation chamber 60 and to clarify as much as possible the detergent pumping chamber before the introduction of a new dose of detergent taken from the tank 13.

When the detergent dose is evacuated in this way, the water supply is cut to the level of the water arrival 42.

The amount of water needed to aspirate and evacuate a dose of detergent obviously depends on the length of the distribution device and the volume of the detergent pumping chamber.

By way of illustration, sending a dose of detergent requires a quantity of water between 0.15 and 0.3 �.

On the other hand, the amount of water sent at the end of the detergent distribution, that is, after several cycles of operation of the detergent distribution device, is greater than that sent between two operating cycles, in order to guarantee Perfect cleaning of the detergent distribution device.

The cancellation of the water pressure at the level of the intake chamber 40 has the effect of allowing the recovery in the rest position of the valve 43 mounted in the intake chamber 40. In this position, the seal 44 of the valve thus seals the arrival of water 45 in order to prevent the return of water in the direction of the arrival of water.

The water contained under pressure in the hydraulic pressure chamber 22 therefore runs in the opposite direction in the water passage orifice 41 in the direction of the intake chamber 40. In the rest position of the valve 43 of the intake chamber 40, the sealing part 43a and the seal 48 are separated, under the effect of the elastic recovery force exerted by the valve spring 46, of the conduit 49 in such a way that the water coming from the hydraulic pressure chamber 22 and flowing in the intake chamber 40 can escape through the exhaust port 47 and the conduit 16 in the direction of the return hole 66 communicating with the chamber 60 of evacuation.

This water return circuit allows cleaning the evacuation chamber 60 and avoiding the presence of detergent residue in this evacuation chamber 60. The water thus evacuated, loaded with residual detergent, can be evacuated through the evacuation hole 61 and the conduit 11 in the direction of the washing tank.

Simultaneously, under the effect of the return to the resting position of the piston 23 mounted on the piston body 20, a depression is created in the detergent pumping chamber 21 such that the non-return valve 30 opens.

More specifically, the valve seal 31 moves against the elastic recovery force exerted by the valve spring 33 along the valve stem 32 in order to separate the valve seal 31 from the hole 12a of the conduit 12 which communicates with the detergent tank 13.

In this way a dose of detergent can be aspirated into the detergent pumping chamber 21.

It should be noted that, in this embodiment, the detergent enters the pumping chamber 21 not only by aspiration under the effect of the depression created by the displacement of the piston 23, but also by gravity since the detergent tank 13 is disposed above of the detergent distribution device.

On the other hand, it should be noted that the detergent can be introduced into the pumping chamber 21 only by aspiration under the effect of the depression created by the displacement of the piston 23.

In such a case, the detergent dispensing device may also be disposed above the detergent tank 13.

At the end of the piston stroke, when the detergent pumping chamber 21 is filled with a dose of detergent, the non-return valve 30 returns to its sealing position of the detergent introducing port 12a by the action of the valve spring 33 .

The detergent dispensing device is therefore available to be fed again with water and to distribute a new dose of detergent in the washing tank.

The quantity of detergents can be controlled by the stabilization of the number of cycles of the detergent distribution device at the level of a machine microcontroller.

The counting of the number of cycles of operation of the detergent dispenser can also be carried out with a timer.

By way of non-limiting example, the detergent pumping chamber 21 can define a detergent dose of the order of 25 cm 3.

This amount of detergent is approximately equivalent to a quarter of a cup of classic detergent provided by a detergent manufacturer.

During a washing phase, in an example of this type, four cycles of operation of the detergent dispensing device can be carried out successively in order to distribute the equivalent of a classic detergent cup, sufficient for a minimum load of laundry. dirty.

Obviously, the size of the detergent pumping chamber 21 can be modified to obtain a larger or smaller volume and thus modify the unit detergent dose.

It should be noted, however, that the water pressure necessary for the correct operation of the detergent dispensing device depends among others on the diameter of the piston of the pump 20 and the force of the spring 25 of the pump 20.

The force of the spring 25 is determined as a function of the viscosity of the liquid product to be distributed, its nature and its storage temperature.

It should be noted in this regard that the piston 23 of the pump can have two different diameters.

A first, higher diameter is arranged on the side of the hydraulic pressure chamber 22 in such a way that the pressure of the water supply network allows to obtain a high effort even with a relatively small pressure.

A second diameter, smaller, is arranged on the side of the pumping chamber in order to obtain a higher suction force.

The spring 25 of the pump 20 is therefore sized according to the section of the piston 23 on the side of the hydraulic pressure chamber 22.

Obviously, a completely hydraulic detergent distribution device has been described above and does not require any electrical supply.

However, this detergent distribution device could also be put into operation by means of a motor, a solenoid or even by means of a pneumatic supply.

On the other hand, a detergent dispensing device has been described above which allows a washing machine to be fed with detergent.

Obviously, the distribution device described above could be used to distribute other liquid products in a domestic washing machine, and specifically a rinse or salt product in liquid form in a dishwasher, or even a softener used in the rinse phase of a machine To wash clothes.

On the other hand, the distribution device described above could be connected to two or several independent tanks allowing the introduction of a different liquid product in the washing tank.

Thus, the same liquid product distribution device could introduce, in different moments, different liquid products into the tank depending on the phases of the operating cycle of the washing machine.

A liquid product distribution device of this type would therefore comprise one or several solenoid valves placed at the entrance and at the exit in order to choose and orient the flow of the liquid product according to its nature.

Finally, in the example of a distribution device described above, non-return valves 30, 43 and 62 comprise a valve seal and an independent valve spring.

Obviously, any other embodiment of a non-return valve can be put into practice, and in particular valves that integrate a spring and gasket function into the same elastic element.

Claims (9)

1. Liquid product distribution device comprising a liquid product pumping chamber (21) in communication with a liquid product reservoir (13), a hydraulic pressure chamber (22) connected to means (42) of arrival of water and a pump (20) having a piston (23) mounted in translation between said hydraulic pressure chamber (22) and said liquid product pumping chamber (21), characterized in that said pump (20) comprises an orifice (26) of communication between said hydraulic pressure chamber (22) and said liquid product pumping chamber (21), standing or means (54, 5 5) for obtaining said source io (2 6) of communication adapted to op op a shutter position and a position of disturbance of said communication hole (2 6), said means (54, 55) being sealed in said position opening only at the end of the stroke of said piston (23) in said chamber (21) for pumping liquid product. 2. Liquid product distribution device in which claim 1 is characterized, which also includes a secondary piston (52) mounted in translation on said piston (23), the secondary piston (52) comprising a finger (54 ) of a piston adapted to extend projectingly in said communication hole (26), said sealing means comprising sealing means (55) mounted on said finger (54) piston. 3. Device for distributing liquid product according to claim 2, characterized in that said position is open or said (2, 6) or communication, said finger (54) is adapted to act in conjunction with a wall (21a) of said liquid product pumping chamber (21) in order to separate said sealing means (54, 55) from said displacement communication hole (26) of said piston (52) secondary against an elastic recovery force.

Four.

Liquid product distribution device according to any one of claims 1 to 3, characterized in that said liquid product pumping chamber (21) is in communication with a liquid product reservoir (13) by means of a non-return valve (30).

5.

Liquid product distribution device according to any one of claims 1 to 4, characterized in that said liquid product pumping chamber (21) is in communication with an evacuation chamber (6 0) adapted to connect to a tank ( 3) washing, a non-return valve (62) being mounted in said evacuation chamber (60) facing with a passage (63) of liquid product passage between said chamber

(21) pumping liquid product and evacuation chamber (60).

6.

Liquid product distribution device according to any one of claims 1 to 5, characterized in that said hydraulic pressure chamber (22) is connected to said means (42) for the arrival of water by means of an intake chamber (40), being mounted at least one non-return valve (43) in said chamber

(40) of admission faced with the means (42) of water arrival.

7.

Liquid product distribution device according to claim 6, characterized in that said intake chamber (40) comprises an exhaust port (47) adapted to be in communication with said hydraulic pressure chamber (22) when the arrival of water is cut off .

8.

Liquid product distribution device according to claim 7, characterized in that said exhaust orifice (47) is adapted to be in communication with a return orifice (66) that flows into an evacuation chamber (60) in communication with said chamber (21) for pumping liquid product.

9.

Household washing machine, of the dishwasher or washing machine type, characterized by a device

(10) of distribution of liquid product according to any of claims 1 to 8.