BE1030015B1 - washing machine - Google Patents

Abstract

The invention relates to a washing machine with a tub (10), a drum rotatably mounted in the tub (10), a device for admitting liquid into the tub (10), which has a cistern with a first chamber (1) in which a water inlet (18) for supplying water (14) and an outlet (6) for draining the supplied water (14) and a further chamber (4) in which a further outlet (7) for draining the water (14 ) is formed, wherein between the first and further chamber (1, 4) an overflow (5) for filling the further chamber (4) with water (14) from the first chamber (1) is formed, a double valve (9) with a valve (19) and a further valve (20) for controlling the water supply into the tub (10), a supply line (15) for supplying water (14) from an external water supply to the tub (10), into which the double valve ( 9) is integrated, so that the inlet line (15) is connected via the valve (19) of the double valve (9) to the tub (10) via an inlet line part (16) and via the further valve (20) of the double valve (9) is connected to the first chamber (1) via a further feed line part (17), and a control device for controlling the double valve (9), which is designed to control the double valve (9) in such a way that the valve (19) and the further Valve (20) can be switched independently of one another, so that the water (14) flows to the tub (10) exclusively via the feed line part (16), exclusively via the further feed line part (17) or simultaneously via the feed line part (16) and the further feed line part ( 17) can be fed.

Description

Description

washing machine

The invention relates to a washing machine. In particular, the invention relates to a

Washing machines with a tub for holding water, a rotatably mounted in the _ tub drum for receiving laundry and a device for

Letting liquid into the tub, which is a flush tank with a first

Chamber in which a water inlet for supplying water and an outlet for draining the supplied water are formed, and a further chamber in which a further outlet for draining the water is formed, with an overflow for filling between the first and further chamber the further chamber with water from the first

Chamber is formed.

If a detergent is arranged both in the chamber and in the further chamber, these can be supplied separately to the tub by means of the overflow and timing of an inflow volume flow. Through the temporal

Clocking it is possible to have a larger and a smaller volume flow with just one

to create a valve. The lower flow rate is required to flush the chamber but not overflow it. The larger volume flow, on the other hand, is suitable for causing the chamber to overflow, so that the detergent located in the other chamber can be flushed out of it. However, there are the following

Disadvantages: The system must be very well balanced so that it works even at low

water pressure works. The timing must be adapted to the existing water pressure.

The opening and closing times of the valve can be a maximum of 3 seconds. The pulsing shortens the service life of the valve.

The invention therefore faces the problem of providing an automatic washing machine in which clocking of the valve can be dispensed with.

According to the invention, this problem is solved by a washing machine with the features of

Patent claim 1 solved. Advantageous refinements and developments of the invention result from the following dependent claims.

The advantages that can be achieved with the invention consist, in addition to dispensing with the pulsing of the valve, in the fact that the rinsing process can take place in one cycle. With different line pressures, the design of the components of such a system is much simpler than when using a clocked valve. Also the

Control of the double valve is easier because it is independent of the line pressure. The

The service life of the double valve is extended compared to the clocked valve.

The invention relates to a washing machine with - a tub for holding water, - a rotatably mounted drum in the tub for holding laundry, - a device for admitting liquid into the tub, the one

Cistern with a first chamber in which a water inlet for supplying

Water and a drain for draining the supplied water are formed, and a further chamber in which a further drain for draining the water is formed, wherein between the first and further chamber an overflow to

Filling the other chamber with water from the first chamber is formed, - a double valve with a valve and another valve for controlling the

Water supply into the tub, - a supply line for supplying water from an external water supply to the tub, in which the double valve is integrated, so that the supply line is connected via the valve of the double valve to the tub via a supply line part and via the further valve of the double valve is connected to the first chamber via a further feed line part, and - a control device for controlling the double valve, which is designed to

To control the double valve in such a way that the valve and the further valve can be switched independently of one another, so that the water can be supplied to the tub exclusively via the supply line part, exclusively via the further supply line part or simultaneously via the supply line part and the further supply line part.

In a preferred embodiment, the double valve has a flow rate controller which is designed to regulate a volume flow flowing into the double valve to a maximum of 10 l/min. Such a volume flow can be controlled in such a way that in the

Chamber and the other chamber located detergent separately from each other in the

Suds container can be rinsed. Under the term "detergent" are all kinds of to

Washing laundry uses agents such as heavy-duty detergents, delicate detergents, fabric softeners,

Colorants, impregnating agents and the like. To understand. The double valve is preferably designed in such a way that the volume flow flowing through is divided evenly when the valve and the other valve are switched at the same time.

As a result, with simultaneous switching of the two valves of the double valve, there is a sufficient volume flow for flushing out the liquid in the chamber

Detergent ensured while water continues to be supplied directly to the tub to moisten the laundry. With simultaneous switching of the two valves of the

double valve, with a volume flow of 10 l/min flowing into the double valve, the volume flow which flows through the valve is 5 l/min, and the volume flow which flows through the further valve is also 5 l/min. If one of the valves of the double valve is switched, it is open or on. If one of the valves of the double valve is not switched, it is closed or closed.

In a preferred embodiment, the first chamber has a compartment that communicates with the second

Chamber is connected via the overflow, and another compartment that is downstream of the compartment and which can be filled with detergent. As a result, a washing agent can be arranged by a user of the washing machine in the chamber and an additional detergent in the additional chamber for carrying out a washing process, so that it is ensured that these are flushed separately into the tub.

The compartment preferably has a drain for draining the water into the further compartment, the cross section of which is designed in such a way that a drain volume flow into the further compartment is smaller than a nominal volume flow. This causes a level increase in the compartment

Chamber ensured that ensures an overflow of the water in the other chamber to flush the arranged there further detergent in the tub. If the volume flow flowing into the additional valve is, for example, 10 l/min, that is

Nominal volume flow is 6 l/min, for example, and the drain volume flow is 5 l/min, for example.

In a preferred embodiment, the control device is designed in a

Execution of a wash program to control the double valve in such a way that - first only one valve is switched in order to supply the tub with a predetermined amount of water via the inlet line part, and - subsequently one valve and the other valve are switched simultaneously to supply the tub supplying a further predetermined amount of water via the inlet line part and the further inlet line part at the same time and/or only the other valve is switched downstream in time in order to supply the tub with a further predetermined amount of water via the further

To supply feed line part.

The exclusive switching of a valve via the inlet line part with the

Tub is connected, serves to fill the tub with water before the laundry comes into contact with water. This ensures that a

Level sensor of the washing machine, which is designed, a level of water in the

To sense the tub is working properly. If a valve and the other valve are switched simultaneously to the tub water on the

Supply line part and the other feed line part simultaneously, the

Chamber supplied a flow rate that is designed not to lead to a rise in level and accordingly not to overflow the chamber. This will be in the

The detergent in the chamber is rinsed out, but not the other detergent in the other chamber. If only the other valve is switched to supply water to the tub exclusively via the further inlet line part, the entire volume flow into the cistern is in particular first conducted into the chamber, so that it leads to a level increase and accordingly to the overflow

Chamber leads, so that the other located in the other chamber detergent is flushed into the tub. Preferably, the chamber is used to hold a

Detergent for washing the laundry such as heavy-duty detergent, delicate detergent and the like., While the other chamber is used to hold a fabric softener.

The automatic washing machine preferably also has a siphon which is arranged at the outlet of the further chamber. A siphon effect is preferred for rinsing out the

Detergent used from the other chamber. The control device is preferably designed to calculate an opening time of the other valve of the double valve in such a way that sufficient water flows into the further chamber via the overflow in order to activate the siphon.

In a preferred embodiment, the washing machine further includes a housing with a loading opening for loading the drum with laundry and a door that

Loading opening closes and has a door sight glass, the device being integrated into the _ door sight glass or designed as a door sight glass. The washing machine is preferably designed as a front loader.

The double valve is preferably designed as a double solenoid valve. Solenoid valves are very switchable.

The term "washing machine" includes an automatic washing machine as well as a

Combination appliance such as a washer-dryer.

An embodiment of the invention is shown purely schematically in the drawings and is described in more detail below. It shows schematically and not to scale

1 shows a sketchy partial representation of a washing machine according to the invention during a flushing process;

FIG. 2 shows a sketch of the automatic washing machine shown in FIG. 1 during a further flushing process; and

FIG. 3 shows a sketch of the automatic washing machine shown in FIG. 1 during yet another flushing process. 5 Fig. 1 shows a sketch of a partial representation of a washing machine according to the invention during a flushing process. The washing machine has a tub 10 for

Recording of water, a rotatably mounted in the tub 10 drum (not shown) for receiving laundry (not shown) and a device for admitting

Liquid in the tub 10 on.

The device has a cistern with a first chamber 1 and another

Chamber 4 up. A water inlet 18 for supplying water 14 and an outlet 6 for removing the supplied water 14 are formed in the first chamber. In addition, between the first chamber 1 and the other chamber 4 is an overflow 5 for filling the other

Chamber 4 with water 14 from the first chamber 1 is formed. Another outlet 7 for draining the water 14 is formed in the other chamber 4 . The other chamber 4 can be filled with a fabric softener 11 and is shown here filled. The first chamber 1 has a

Compartment 2, which is connected to the further chamber 4 via the overflow 5, and another

Subject 21, which is the subject 2 downstream and which can be filled with detergent 12 and is shown filled in here. The compartment 2 has a drain 3 for draining the water into the further compartment 21, the cross section of which is designed such that a drain volume flow into the further compartment 21 is smaller than a nominal volume flow. For example, is the

drain flow is 5 l/min, and the nominal flow is 6 l/min.

The washing machine also has a double valve 9, in particular a double solenoid valve.

The double valve has a valve 19 and another valve 20 for controlling the

Water supply in the tub 10 on.

Furthermore, the washing machine has an inlet line 15 for supplying water 14 from an external water supply to the tub 10 . The double valve 9 is in the

Inlet line 15 integrated, so that the inlet line 15 via the valve 19 with the

Suds container 10 is connected via an inlet line part 18 and is connected via the further valve 20 to the first chamber 1 via a further inlet line part 17 .

In addition, the washing machine has a control device for controlling the double valve 9, which is designed to control the double valve 9 in such a way that the valve 19 and the further valve 20 can be switched independently of one another. As a result, if only the valve 19 is switched, i.e. is on or open, but the other valve 20 is not switched, i.e. is off or closed, the water 14 can be supplied to the tub 10 exclusively via the inlet line part 16. Furthermore, if only the further

Valve 20 is switched, i.e. is on, but valve 19 is not switched, i.e. is off, that

Water 14 to the tub 10 exclusively via the further feed line part 17 in the

Chamber 1 are supplied. When the valve 19 and the further valve 20 are both switched, i.e. are on, the water 14 can flow to the tub 10 simultaneously via the

Inlet line part 16 and the other inlet line part 17 are supplied. The

Washing machine is designed, for example, so that the inflowing into the double valve 9

volume flow is 10 l/min.

1 shows a flushing process in which the valve 19 is on while the other valve 20 is off. As a result, the water 14 is the tub 10 supplied exclusively via the inlet line part 16, the external water supply via the

Inlet line 15 connects directly to the tub 10 without going through the

Chamber 1 or the other chamber 4. This flushing-in process is used in particular to moisten the laundry at the beginning of a washing process, before the detergent 12 or the softener 11 is flushed into the tub 10. The through the

The volume flow flowing through the inlet line section is 10 l/min.

FIG. 2 shows a sketch of the automatic washing machine shown in FIG. 1 during a further flushing process. In the flushing-in process shown in FIG

Valve 19 and the other valve 20 of the double valve 9 are both switched, i.e. on or open. In this state, the volume flow flowing into the double valve 9 is divided from 10 l/min to 2×5 l/min, so that the volume flow flowing through the inlet line part 16 is divided

Volume flow is 5 l / min and flowing through the other inlet line part

volume flow is 5 l/min. With an outflow volume flow of the compartment 2 of 5 l/min, the water 14 running into the chamber 1 does not lead to a level increase and accordingly not to the chamber 1 overflowing

Subject 21 flowing water 14 flushed into the tub 10. The watercourse of

Water 14 in the cistern is indicated by arrows.

FIG. 3 shows a sketch of the automatic washing machine shown in FIG. 1 during yet another flushing process. In the flushing process shown in Fig. 3, this is

Valve 19 off or closed, while the other valve 20 is open i.e. on. In this

state, the entire volume flow of 10 l/min is directed into the cistern. At a

Drain volume flow of compartment 2 of 5 l/min leads the incoming water 14 to a

Level rise and accordingly to the overflow of the chamber 1. The opening time of the other valve 20 is calculated so that enough water runs over the overflow 5 into the other chamber 4 to activate the siphon 8. The cross section of the outlet 3 of the compartment 2 is designed in such a way that an outlet volume flow of 5l/min into the further compartment

21 flows, so that even at a low line pressure with a nominal flow rate of 6 l/min on average, chamber 1 overflows. The watercourse of

Water 14 in the cistern is indicated by arrows.

LIST OF REFERENCE NUMERALS 1 first chamber 2 compartment 3 water inlet opening 4 further chamber

5 overflow 6 drain 7 further drain 8 siphon

9 double valve 10 tub 11 fabric softener 12 detergent 14 water

15 inlet line 16 inlet line part 17 further inlet line part 18 water inlet 19 valve

20 more valve 21 more compartment

Claims (9)

patent claims 1. Washing machine with - a tub (10) for holding water (14), - a drum rotatably mounted in the tub (10) for receiving laundry, - a device for admitting liquid into the tub (10), the one Flushing tank with a first chamber (1) in which a water inlet (18) for supplying water (14) and an outlet (6) for removing the supplied water (14) are formed, and a further chamber (4) in which a further outlet (7) for draining the water (14) is formed, with an overflow (5) between the first and further chambers (1, 4) for filling the further chamber (4) with water (14) from the first chamber (1), - a double valve (9) with a valve (19) and a further valve (20) for controlling the water supply into the tub (10), - a feed line (15) for supplying water (14). an external water supply to the tub (10), in which the double valve (9) is integrated, so that the inlet line (15) is connected via the valve (19) of the double valve (9) to the tub (10) via an inlet line part (16). and is connected via the further valve (20) of the double valve (9) to the first chamber (1) via a further feed line part (17), and - a control device for controlling the double valve (9), which is designed to control the double valve ( 9) to be controlled in such a way that the valve (19) and the further valve (20) can be switched independently of one another, so that the water (14) flows into the tub (10) exclusively via the feed line part (16), exclusively via the further feed line part ( 17) or can be supplied simultaneously via the feed line part (18) and the further feed line part (17). 2. Automatic washing machine according to claim 1, characterized in that the double valve (9) has a flow rate controller which is designed to regulate a volume flow flowing into the double valve (9) to a maximum of 10 l/min. 3. Washing machine according to claim 1 or 2, characterized in that the double valve (9) is designed such that the volume flow flowing through is divided evenly with simultaneous switching of the valve (19) and the further valve (20). 4. Washing machine according to one of the preceding claims, characterized in that the first chamber (1) has a compartment (2) which is connected to the second chamber (4) via the overflow (5), and a further compartment (21). Which is the subject (2) downstream and with detergent (12) can be filled. 5. Washing machine according to claim 4, characterized in that the compartment (2) has a drain (3) for draining the water (14) into the further compartment (21), the cross section of which is designed such that a drain volume flow into the further compartment (21) is smaller than a nominal flow rate. 6. Automatic washing machine according to one of the preceding claims, characterized in that the control device is designed to control the double valve (9) when a washing program is carried out in such a way that - initially only one valve (19) is switched in order to supply the tub (10 ) to supply a predetermined quantity of water (14) exclusively via the inlet line part (16), and - one valve (19) and the other valve (20) are switched simultaneously at a later point in time in order to supply the tub (10) with a further predetermined quantity water (14) via the inlet line part (16) and the further inlet line part (17) at the same time and/or only the other valve (20) is switched downstream in time in order to pour a further predetermined quantity of water (14) over the tub (10). supply the further feed line part (17). 7. Washing machine according to one of the preceding claims, characterized by a siphon (8) which is arranged on the outlet (7) of the further chamber (4). 8. Washing machine according to one of the preceding claims, characterized by a housing with a loading opening for loading the drum with laundry and a door which closes the loading opening and has a door sight glass, the device being integrated into the door sight glass or designed as a door sight glass. 9. Washing machine according to one of the preceding claims, characterized in that the double valve (9) is designed as a double solenoid valve.