Washer comprising a liquid detergent dosing unit

Abstract

The present invention relates to a washer (100) comprising a body, a door providing access into the body, a liquid detergent tank (3) enabling liquid detergent to be stored and a detergent dosing unit (1) enabling liquid detergent corresponding to an amount estimated for one washing program to be transferred from the liquid detergent tank (3) into a washer (100) during a cycle.

Claims

1. A washer (100) comprising a body, a door providing access into the body, a liquid detergent tank (3) enabling liquid detergent to be stored, a detergent dosing unit (1) enabling liquid detergent corresponding to an amount estimated for one washing program to be transferred from the liquid detergent tank (3) into the washer (100) during a cycle, wherein the detergent dosing unit (1) comprises a motor (7), a pump (10) that enables liquid detergent to be delivered from the liquid detergent tank (3) into the washer (100), a drive wheel (14) disposed so as to rotate counterclockwise as the motor (7) operates and a lever (18) that contacts and applies a downward force on an upper portion of a piston (13) of the pump (10) when activated by the drive wheel (14), wherein when the downward force is applied on the upper portion of the piston, the pump sucks the liquid detergent from the liquid detergent tank (3) and delivers the liquid detergent into the washer.

2. The washer (100) as in claim 1, wherein the lever (18) comprises a long arm (16) and a short arm (17), wherein the long arm is longer than the short arm, wherein the short arm (17) is enabled to press downwards on the piston (13) of the pump (10) as a terminal end of the long arm (16) is engaged by the drive wheel (14).

3. The washer (100) as in claim 2, further comprising a filling opening (5) arranged at an inner side of the door and a filling cover (6) that covers the filling opening (5) and the liquid detergent tank (3) that is disposed inside the door so as to be filled from the filling opening (5).

4. The washer (100) as in claim 2, further comprising a control unit (9) configured to control a total number of rotations or a total rotation time and a rotation start time of the motor (7) in the detergent dosing unit (1) and a dosing number in order to transfer liquid detergent corresponding to an amount estimated for a selected washing program into the washer (100).

5. The washer (100) as in claim 1, wherein the drive wheel (14) comprises at least one protrusion (21) disposed on the drive wheel (14), each protrusion engages a terminal end of an arm (16) of the lever to push the arm upwards when the protrusion comes into contact with the terminal end of the arm as the drive wheel (14) rotates.

6. The washer (100) as in claim 5, wherein the drive wheel (14) comprises four protrusions (21) disposed on a periphery of the drive wheel (14) at equal intervals.

7. The washer (100) as in claim 6, wherein the lever (18) composed of one long arm (16) and one short arm (17), and disposed such that a terminal end of the long arm (16) is engaged and moved by the drive wheel (14) and the short arm (17) presses on the piston (13) of the pump (10), wherein the long arm is longer than the short arm.

8. The washer (100) as in claim 7, further comprising a filling opening (5) arranged at an inner side of the door and a filling cover (6) that covers the filling opening (5) and the liquid detergent tank (3) that is disposed inside the door so as to be filled from the filling opening (5).

9. The washer (100) as in claim 7, further comprising a control unit (9) configured to control a total number of rotations or a total rotation time and a rotation start time of the motor (7) in the detergent dosing unit (1) and a dosing number in order to transfer liquid detergent corresponding to an amount estimated for a selected washing program into the washer (100).

10. The washer (100) as in claim 6, further comprising a filling opening (5) arranged at an inner side of the door and a filling cover (6) that covers the filling opening (5) and the liquid detergent tank (3) that is disposed inside the door so as to be filled from the filling opening (5).

11. The washer (100) as in claim 6, further comprising a control unit (9) configured to control a total number of rotations or total rotation time and a rotation start time of the motor (7) in the detergent dosing unit (1) and a dosing number in order to transfer liquid detergent corresponding to an amount estimated for a selected washing program into the washer (100).

12. The washer (100) as in claim 5, wherein the lever (18) is composed of one long arm (16) and one short arm (17), and disposed such that a terminal end of the long arm (16) is engaged and moved by the drive wheel (14) and the short arm (17) presses on the piston (13) of the pump (10), wherein the long arm is longer than the short arm.

13. The washer (100) as in claim 12, further comprising a filling opening (5) arranged at an inner side of the door and a filling cover (6) that covers the filling opening (5) and the liquid detergent tank (3) that is disposed inside the door so as to be filled from the filling opening (5).

14. The washer (100) as in claim 12, further comprising a control unit (9) configured to control a total number of rotations or a total rotation time and a rotation start time of the motor (7) in the detergent dosing unit (1) and a dosing number in order to transfer liquid detergent corresponding to an amount estimated for a selected washing program into the washer (100).

15. The washer (100) as in claim 5, further comprising a filling opening (5) arranged at an inner side of the door and a filling cover (6) that covers the filling opening (5) and the liquid detergent tank (3) that is disposed inside the door so as to be filled from the filling opening (5).

16. The washer (100) as in claim 5, further comprising a control unit (9) configured to control a total number of rotations or a total rotation time and a rotation start time of the motor (7) in the detergent dosing unit (1) and a dosing number in order to transfer liquid detergent corresponding to an amount estimated for a selected washing program into the washer (100).

17. The washer as in claim 1, wherein the pump is configured such that the liquid detergent is sucked and filled from a suction duct of the pump and is delivered into the washer from a detergent outlet of the pump as the piston of the pump is pressed in a first direction.

18. The washer (100) as in claim 1, wherein the drive wheel (14) comprises a plurality of protrusions (21) disposed on the drive wheel (14), each protrusion engages and pushes upwards a terminal end of the lever when the protrusion comes into contact with the terminal end of the lever as the drive wheel (14) rotates while an opposite end of the lever applies the downward force on the upper portion of a piston (13) of the pump (10) thereby delivering one dose of the liquid detergent into the washer.

19. The washer (100) as in claim 18, wherein a number of protrusions of the drive wheel (14) corresponds to a number of liquid detergent doses delivered into the washer as the motor makes one rotation.

Description

(1) The model embodiments relating to the washer realized in order to attain the aim of the present invention are illustrated in the attached figures, where:

(2) FIG. 1—is the schematic view of the washer in an embodiment of the present invention.

(3) FIG. 2—is the schematic view of the detergent dosing unit in an embodiment of the present invention.

(4) FIG. 3—is the perspective view of the detergent dosing unit in an embodiment of the present invention.

(5) FIG. 4—is another perspective view of the detergent dosing unit in an embodiment of the present invention.

(6) FIG. 5—is the perspective view of the detergent pump in an embodiment of the present invention.

(7) FIG. 6—is the perspective view of the lever arm in an embodiment of the present invention.

(8) The elements illustrated in the figures are numbered as follows: 1. Detergent dosing unit 2. Receptacle 3. Liquid detergent tank 4. Pump inlet 5. Filling opening with cover 6. Cover 7. Motor 8. Motor shaft 9. Control unit 10. Pump 11. Detergent outlet 12. Detergent suction duct 13. Piston 14. Drive wheel 15. Rotational axis of the drive wheel 16. Long arm of lever 17. Short arm of lever 18. Lever arm 19. Fulcrum point of lever 20. Rotational axis of lever 21. Protrusions of the drive wheel 100. Washer

(9) A washer (100), not shown in the figures, comprises a body, a door providing access into the body, a liquid detergent tank (3) enabling liquid detergent to be stored, a detergent dosing unit (1) enabling liquid detergent corresponding to an amount estimated for one washing program to be transferred from the liquid detergent tank (3) thereinto during one cycle and a receptacle (2) wherein the liquid detergent tank (3) and the detergent dosing unit (1) are disposed (FIG. 1).

(10) The detergent dosing unit (1) furthermore comprises a motor (7), a pump (10) that enables the liquid detergent to be delivered from the detergent tank (3) into the washer (100), a drive wheel (14) disposed so as to rotate counterclockwise with the movement of the motor (7) and that enables the motion generated by the motor (7) to be transmitted to the piston (13) of the pump (10), a lever (18) disposed such that as one of its arms (16) is started to be moved upwards by the drive wheel (14), the other arm (17) is enabled to press the piston (13) of the pump (10) downwards (FIG. 1). Thus, the motion generated by the motor (7) is enabled to be transmitted to the piston (13) of the pump (10). The drive wheel (14) is attached onto a shaft (8) of the motor (7) (FIG. 7 and FIG. 8). As the piston (13) is pressed downwards, the liquid detergent is sucked and filled from a suction duct (12) of the pump (10) and is delivered into the washer (100) from a detergent outlet (11) of the pump (10). As the piston (13) is pushed back to its free position by the spring means, some amount of liquid detergent from the detergent tank (3) fills in via the suction duct (12). The said pump (10) that functions according to the operating principle of a waterpump is known in the technique. Therefore, a more detailed explication of the pump (10) used in the present invention is not necessary. The pump (10) used in the present invention is inserted into an inlet of the detergent tank (3) and can be firmly fixed there.

(11) In an embodiment of the present invention, the drive wheel (14) comprises at least one or more than one protrusion (21) fixed on the drive wheel (14) and each enabling an arm (16) of the lever (18) to be pressed upwards as the drive wheel (14) rotates counterclockwise (FIG. 2). The lever (18) is fixed to a fulcrum point (19) so as to rotate freely around an axis (20) (FIG. 2). Thus, the lever (18) is enabled to be set in motion by the drive wheel (14). The part of the lever (18) touching the protrusions (21) on the drive wheel (14) is preferably configured to be inclined towards the movement direction and in tapering form. Thus, the lever (18) is enabled to function more harmoniously with the protrusions (21) and to move softly. Another spring, not shown in the figures, is preferably used for the lever (18) to return easily to the horizontal position.

(12) In an embodiment of the present invention, the drive wheel (14) comprises four protrusions (21) disposed around its periphery at equal intervals (FIG. 2 and FIG. 7). Thus, as the motor (7) makes one rotation, the pump (10) is enabled to perform dosing of detergent four times from the liquid detergent tank (3) into the washer (100). The said protrusions (21) preferably have cylindrical cross-sections and extend in the rotational axis (15) direction of the drive wheel (14) (FIG. 2). The drive wheel (14) and the protrusions (21) can be produced from a single material or can be produced separately and joined afterwards. The drive wheel (14), the protrusions (21) and the lever arm (18) are produced from metal or preferably from a suitable artificial material so that the friction occurring therebetween is low.

(13) In an embodiment of the present invention, the lever (18) is composed of one long arm (16) and one short arm (17) (FIG. 6). The lever (18) is disposed on a fulcrum point (19) such that the long arm (16) is moved by the drive wheel (14) and the short arm (17) presses on the piston (13) of the pump (10) downwards (FIG. 1, FIG. 2 and FIG. 6). Thus, the force applied on the piston (13) of the pump (10) is enabled to be high. Additionally, pressing on the piston (13) is made to be more accurate since the angular movement of the short arm (17) is limited.

(14) In an embodiment of the present invention, the washer (100) comprises a filling opening (5) at the inner side of its door and a filling cover (6) that covers the filling opening (5). The liquid detergent tank (3) is disposed inside the door so as to be filled from the filling opening (5) situated at the inner side of the door (FIG. 3). Thus, the user is enabled to fill the liquid detergent tank (3) from the inner side of the washer (100) door. Preferably, at least one or more than optical sensor, not shown in the figures, is used in order to inform the user about the fill rate of the liquid detergent tank (3). Thus, the user is enabled to see the fill rate of the liquid detergent tank (3) from a control panel, not shown in the figures. In an embodiment of the present invention, the washer (100) comprises a control unit (9). The control unit (9) controls the total number of rotations or the total rotation time and the rotation start time of the motor (7) in the detergent dosing unit (1) and the dosing number in order to transfer the liquid detergent corresponding to an amount estimated for the selected washing program into the washer (100). The control unit (9) determines the form of the control signal applied to the motor (7) in the detergent dosing unit (1) depending on the total rotation number or the total rotation time and one or more than one moment when the motor (7) starts rotating. Thus, the detergent dosing unit (1) is enabled to be controlled depending on the selected program and the type of detergent.

(15) In another embodiment of the present invention, the rotation number of the motor (7) is feed backed to the control unit (9) by a sensor disposed in the detergent dosing unit (1). Thus, the motor (7) is enabled to be controlled reliably.

(16) In an embodiment of the present invention, the control unit (9) determines the amount of detergent estimated for each washing program according to the detergent type as the whole multiples of the motor (7) rotation number or time. A reference table related to this is kept in a permanent memory, not shown in the figures, that is disposed in the control unit (9). The control unit (9) applies the control signal to the motor (7) in the required form during the cycle by reading the necessary data from the memory in accordance with the selected washing program and the detergent type. Thus, an effective control method is provided in order to utilize the detergent dosing unit (1) with different washing programs.

(17) In another embodiment of the present invention, after detecting the load amount and the dirt level, whole multiples read from the memory and corresponding to the selected washing program, are changed proportionately by the control unit (9). Consequently, use of less detergent is provided in low load amount and/or less dirtiness level and use of more detergent in greater load amount and/or excessive dirtiness level.

(18) In an embodiment of the present invention, the user can select the type of liquid detergent filled into the washer (100) from the control panel. In order to perform this, the user is enabled to select the detergent type corresponding to the code specified on the liquid detergent package and enter to the washer (100).

(19) In another embodiment of the present invention, the user is enabled to enter the detergent type by bringing a radio frequency memory element, supplied together with the liquid detergent package, near the washer (100).

(20) By means of the present invention, a washer (100) having a detergent dosing unit (1) is realized, which is low cost, structurally simple, easy to maintain and repair when required and which can dose precisely and reliably the liquid detergent corresponding to an estimated amount for a washing program during a cycle, and that can be controlled according to user requirements, allowing saving of detergent.