KR102349092B1 - Apparatus for dispensing detergent - Google Patents

Abstract

The present invention relates to a detergent dispensing apparatus, comprising: a detergent supply unit for supplying liquid detergent; and an inlet and outlet for receiving and discharging liquid detergent from the detergent supply unit and a detergent receiving space for temporarily accommodating the liquid detergent supplied through the suction port; A cylinder to be formed, a piston that is reciprocally accommodated in the cylinder and performs a suction stroke for suctioning the liquid detergent through the suction port and a discharge stroke for discharging the liquid detergent through the discharge port, and a driving unit for reciprocally driving the piston; , It includes a suction check valve that opens the suction port when the piston moves in suction and blocks the suction port when the piston moves, and a discharge check valve that opens the outlet when the piston moves and opens the outlet when the piston moves in suction.

Description

Detergent dispensing device {Apparatus for dispensing detergent}

The present invention relates to a detergent dispensing apparatus, and more particularly, to an apparatus for dispensing liquid detergent in a washing machine.

In a washing machine using liquid detergent, a measured amount of detergent is supplied to the washing tub by using a pump.

The detergent pump capable of such metering control must use an expensive motor capable of precise control, and its structure is relatively complex, so the occurrence of failure is high.

In particular, when it is necessary to selectively supply a plurality of liquid detergents, a pump should be provided as many as the types of detergents.

Accordingly, it is an object of the present invention to provide a detergent dispensing device having a simple structure, excellent durability, and inexpensive manufacturing.

In addition, another object of the present invention is to provide a detergent dispensing apparatus with improved economic feasibility by selectively supplying a plurality of types of liquid detergent with one pump.

The detergent dispensing device according to the present invention has a detergent supply unit for supplying liquid detergent, and a suction port and a discharge port for receiving and discharging liquid detergent from the detergent supply unit, and a detergent receiving space for temporarily accommodating the liquid detergent supplied through the suction port. A cylinder to be formed, a piston accommodated in a reciprocating movement inside the cylinder to perform a suction stroke for suctioning the liquid detergent through the suction port and a discharge stroke for discharging the liquid detergent through the discharge port, and the piston reciprocating A driving unit for driving, a suction check valve that opens the suction port when the piston moves in suction and blocks the suction port when the piston moves, and opens the outlet when the piston moves and blocks the outlet when the piston moves Includes discharge check valve.

In addition, it is preferable that the driving unit includes a driving motor having a driving shaft and a transmission unit for converting a rotational motion of the driving shaft into a reciprocating motion of the piston.

In addition, the transmission unit preferably includes a cam pin disposed at a position deviated from the axis of the drive shaft, and a cam pin guide for guiding the cam pin to slide horizontally with respect to the reciprocating direction of the piston.

In addition, the cam pin guide preferably has a starting section having a downward inclination angle along the moving direction of the cam pin.

In addition, the detergent supply unit provides any one liquid detergent selected from among a plurality of supply paths through which the liquid detergent is supplied, a transmission path connected to the suction port, and the liquid detergent supplied through the supply paths, to the transmission path. It is preferable to include a selection part.

In addition, the selection unit includes a fixed disk having a plurality of communication holes communicating with the plurality of supply passages, and a selection hole that is rotatably disposed with respect to the fixed disk and selectively opens any one of the plurality of communication holes. It is preferable to include a movable disk having a, and a selection driving unit for rotating the movable disk.

In addition, based on a plurality of selection hole detection sensors installed on the fixed disk to detect the position of the selection hole, and signals from the plurality of selection hole detection sensors, it is determined whether the selected communication hole is opened by the selection hole. It is preferable to further include a control unit for controlling the selection driving unit to open the selected communication hole when it is determined that the check and the selected communication hole is not opened.

According to the present invention having the above-described configuration, there is an effect that is excellent in durability and can be manufactured inexpensively.

In addition, there is an effect of increasing economic efficiency by selectively supplying a plurality of types of liquid detergents with one pump.

1 is a perspective view of a detergent dispensing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the detergent dispensing apparatus shown in FIG. 1 ;
3 is an exploded perspective view of a selection unit according to an embodiment of the present invention;
4 is an exploded perspective view of a driving unit according to an embodiment of the present invention;
5 is a partially enlarged cross-sectional view of a driving unit according to an embodiment of the present invention;
6 is a partially enlarged cross-sectional view of a driving unit according to another embodiment of the present invention.
7 is a block diagram functionally illustrating a control-related configuration of a detergent dispensing apparatus according to an embodiment of the present invention.

Hereinafter, a detergent dispensing apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 , the detergent dispensing apparatus 1 according to the embodiment includes a housing 10 , a detergent supply unit 20 , and a pumping unit 40 .

The housing 10 serves as a basic skeleton, and the detergent supply unit 20 and the pumping unit 40 are installed therein.

The detergent supply unit 20 supplies liquid detergent, and at least one is provided.

The detergent supply unit 20 includes a plurality of supply paths 22 through which liquid detergent is supplied, a transmission path 24 connected to a suction port 42a provided in a cylinder 42 to be described later, and a supply path 22 . It consists of a selection unit 30 for providing any one liquid detergent selected from the supplied liquid detergent to the delivery path 24 .

A detergent cartridge 23 in which liquid detergent is stored and a water supply unit (not shown) are coupled to the plurality of supply paths 22 .

As shown in FIGS. 1 and 2 , the plurality of supply paths 22 of the detergent supply unit 20 according to the embodiment include a laundry detergent supply path 22a, a softener supply path 22b, and a water supply path 22c. ) is composed of However, the present invention is not limited thereto, and may consist of only a laundry detergent supply path and a softener supply path, or may consist of a single laundry detergent supply path, according to the purpose of the user.

Here, the water supplied through the water supply path 22c is used for washing the delivery path 24, the suction port 42a, the discharge port 42b, and the detergent accommodating space 42c formed in the cylinder 42. . That is, it prevents the delivery path 24, the suction port 42a, and the discharge port 42b from clogging because the laundry detergent or softening agent used for washing the laundry hardens.

The selection unit 30 provides a liquid detergent selected from among the liquid detergents supplied through the supply passages 22 to the delivery passage 24 .

The selection unit 30 is rotatably disposed with respect to the fixed disk 32 having a plurality of communication holes 32a communicating with the plurality of supply passages 22 and the fixed disk 32, and a plurality of It consists of a movable disk (34) having a selection hole (34a) for selectively opening any one of the communication holes (32a), and a selection drive part (36) for rotating the movable disk (34).

The fixed disk 32 preferably further includes a plurality of selection hole detection sensors 32b for detecting whether the selection hole 34a communicates with any one of the communication holes 32a.

In addition, based on the signals from the plurality of selection hole detection sensors 32b, it is checked whether the selected communication hole is opened by the selection hole 34a, and when it is determined that the selected communication hole is not opened, the selection driving unit opens the selected communication hole. It is preferable to further include a control unit 80 for controlling (36).

Here, the communication hole selected from among the plurality of communication holes is selected by a signal input through the user input unit.

In addition, the control unit 80 generates an alarm sound when it is determined that the communication hole selected through the user input unit is not opened by the selection hole 34a to notify the user by generating an alarm generating unit 82 and the selection hole 34a. It is preferable to further include a reset unit 84 for returning the position to the initial position.

When the position of the selection hole 34a is returned to the initial position by the reset unit 84, the control unit 80 re-drives the selection driving unit 36 so that the selected communication hole is opened by the selection hole 34a.

The pumping unit 40 receives and discharges liquid detergent from the detergent supply unit 20 , and includes a cylinder 42 , a piston 44 , a driving unit 50 , a suction check valve 60 , and a discharge check valve 70 . is done

The cylinder 42 has a suction port 42a and a discharge port 42b for receiving and discharging liquid detergent from the detergent supply unit 20, and a detergent receiving space 42c for temporarily accommodating the liquid detergent supplied through the suction port 42a. form inside.

The piston 44 is accommodated in a reciprocating movement inside the cylinder 42, and performs a suction stroke for suctioning the liquid detergent through the suction port 42a and a discharge stroke for discharging the liquid detergent through the discharge port 42b.

The driving unit 50 reciprocates the piston 44 , and includes a driving motor 52 having a driving shaft 52a and a transmission unit 54 that converts the rotational motion of the driving shaft 52a into a reciprocating motion of the piston 44 . ) is included.

The transmission unit 54 includes a cam pin 54a disposed at a position deviating from the axis of the drive shaft 52a, and a cam pin guide for guiding the cam pin 54a to slide horizontally with respect to the reciprocating direction of the piston 44 . (54b).

Here, the cam pin guide 54b preferably has a starting section having a downward inclination angle along the moving direction of the cam pin 54a, and as shown in FIG. 6 , the starting section formed in the cam pin guide 54b is the piston 44 ) is inclined at a predetermined angle with respect to the reciprocating direction. However, the present invention is not limited thereto, and may be formed to be curved (not shown).

Due to this configuration, in the initial stage when the piston 44 performs a suction stroke for suctioning the liquid detergent through the suction port 42a, the torque value of the driving motor 52 must be large for the operation of the piston 44, At this time, the required torque value can be minimized.

The suction check valve 60 is installed inside the suction port 42a to open the suction port 42a when the piston 44 moves by suction and blocks the suction port 42a when the piston 44 is discharged.

The discharge check valve 70 is installed inside the discharge port 42b to open the discharge port 42b when the piston 44 is discharged and blocks the discharge port 42b when the piston 44 is suctioned.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art can variously modify and change the present invention within the scope without departing from the technical spirit of the present invention described in the claims below. You will understand that there is

10; housing
20; Detergent supply department
22; supply line
24; transmission path
30; selection
32; fixed disk
34; movable disk
36; selection drive
40; pumping unit
42; cylinder
44; piston
50; drive part
52; drive motor
54; electric part
60; suction check valve
70; discharge check valve
80; control

Claims (7)

Detergent supply unit for supplying liquid detergent;
a cylinder having a suction port and a discharge port for receiving and discharging liquid detergent from the detergent supply unit and forming a detergent accommodating space for temporarily accommodating the liquid detergent supplied through the suction port;
a piston accommodated in a reciprocating movement within the cylinder to perform a suction stroke for suctioning the liquid detergent through the suction port and a discharge stroke for discharging the liquid detergent through the discharge port;
a driving unit for reciprocally driving the piston;
a suction check valve that opens the suction port when the piston moves in suction and blocks the suction port when the piston moves in discharge; and,
It includes; a discharge check valve that opens the discharge port when the piston moves and blocks the discharge port when the piston moves in suction.
The driving unit,
a drive motor having a drive shaft;
Detergent dispensing apparatus including a transmission unit for converting the rotational motion of the drive shaft into the reciprocating motion of the piston.
The electric part,
a cam pin disposed at a position deviated from the axial center of the drive shaft;
and a cam pin guide for guiding the cam pin to slide horizontally with respect to the reciprocating direction of the piston.
delete delete The method according to claim 1,
The cam pin guide is a detergent dispensing device, characterized in that it has a starting section having a downward inclination angle along the movement direction of the cam pin.
The method according to claim 1,
The detergent supply unit,
A detergent dispensing device comprising: a plurality of supply paths to which the liquid detergent is supplied; fencing device.
6. The method of claim 5,
The selection unit,
A fixed disk having a plurality of communication holes communicating with the plurality of supply passages, and a movable disk rotatably disposed with respect to the fixed disk and having a selection hole for selectively opening any one of the plurality of communication holes And, a detergent dispensing device comprising a selection driving unit for rotating the movable disk.
7. The method of claim 6,
a plurality of selection hole detection sensors installed on the fixed disk to detect the position of the selection hole;
Based on the signals from the plurality of selection hole detection sensors, it is checked whether the selected communication hole is opened by the selection hole, and when it is determined that the selected communication hole is not opened, the selection driving unit is controlled so that the selected communication hole is opened. Detergent dispensing device further comprising a control unit.

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