WO2011087254A2

WO2011087254A2 - Device for supplying a liquid detergent

Info

Publication number: WO2011087254A2
Application number: PCT/KR2011/000184
Authority: WO
Inventors: 황의근
Original assignee: 주식회사 대우일렉트로닉스
Priority date: 2010-01-12
Filing date: 2011-01-11
Publication date: 2011-07-21
Also published as: EP2524990A4; WO2011087254A3; CN102713044A; KR20110082760A; KR101614165B1; CN102713044B; US20120312841A1; EP2524990A2

Abstract

Disclosed is an invention relating to a device for supplying a liquid detergent. The disclosed invention comprises: a detergent-supply unit for supplying the liquid detergent; a nozzle unit which is provided so as to be able to move to a first position or a second position, and squirts out the liquid detergent supplied from the detergent-supply unit; and a pump unit which is provided between the detergent-supply unit and the nozzle unit and receives a supply of liquid detergent from the detergent-supply unit when the nozzle unit is moved to the first position and supplies the detergent to the nozzle unit when the nozzle unit is moved to the second position. When the present invention is employed, the liquid detergent is supplied automatically, thereby making it possible to ensure timely supply of the liquid detergent in the desired amount without the trouble of the user introducing the liquid detergent piecemeal when washing.

Description

Liquid Detergent Supply Device

The present invention relates to a liquid detergent supply apparatus, and more particularly to a liquid detergent supply apparatus capable of supplying a desired amount of liquid detergent in a timely manner.

In general, the washing machine is a product that removes various contaminants attached to clothes, bedding, etc. by using the emulsification of the detergent and friction action of the water flow according to the rotation of the pulsator. The fully automatic washing machine automatically performs a series of processes leading to washing, rinsing and dehydration without user intervention in the middle.

The washing machine is classified into a top-loading washing machine in which the washing tank is standing and a drum washing machine in which the washing tank is laid, depending on the type of the washing tank in which the laundry is accommodated. Drum washing machines are not only able to reduce the overall height compared to the top-loading washing machine, but also increase the washing capacity and rarely cause problems such as twisting, and the demand is increasing.

1 is a cross-sectional view schematically showing the structure of a drum washing machine.

Referring to FIG. 1, a washing machine includes a tub 2 supported by a spring 6 and a damper 7 in a main body 1, and a drum 3 rotatably installed in the tub 2 to accommodate laundry. And a drive unit 4 axially connected to the drum 3. The drive unit 4 includes a rotor (not shown) and a stator (not shown), and a drive shaft is connected to the rotor to transmit the driving force of the rotor to the drum 3.

In the upper portion of the drum 3, a detergent container 8 connected to the water supply pipe 10 and a detergent container drawer 9 are detachably installed to the outside of the detergent container 8 so that the user can input the detergent. The front surface of the main body 1 is provided with the door 5 rotatably in a position facing the opening of the drum 3.

In the washing machine having such a configuration, after the powder detergent, bleach, and fabric softener are put into the detergent container drawer 9 before washing, the type of laundry or washing time is controlled through a control panel (not shown). If you press the start button after setting, a series of processes from washing to rinsing and dehydration are automatically performed.

Recently, liquid detergents, which are well diluted in washing water and have excellent emulsification, are widely used. When the liquid detergent is to be put into the washing machine, it is impossible to inject the detergent by opening the door 5 while the washing water is supplied due to the characteristics of the drum washing machine. Must be added via

According to the above washing machine, when the liquid detergent is directly added to the laundry, the laundry is damaged, and when the liquid detergent is introduced through the detergent container, the detergent input amount is incorrect due to the structural characteristics of the powder detergent. Is caused.

In other words, the detergent container has a structure in which the powder detergent is diluted by an appropriate amount of water to be supplied to the drum, but in the case of the liquid detergent, the detergent can be directly added to the drum even if it is not diluted in the washing water due to its fluidity. The silver powder is for the detergent and the amount of dilution of the powder detergent and the liquid detergent by the wash water can not but be different, which causes a problem that it is difficult to control the amount of detergent detergent. Therefore, there is a need for improvement.

The present invention has been made to solve the above problems, and an object thereof is to provide a liquid detergent supply apparatus having an improved structure so as to supply a desired amount of liquid detergent in a timely manner.

Liquid detergent supply apparatus according to the present invention comprises: a detergent supply unit for supplying a liquid detergent; A nozzle unit provided to be movable to a first position or a second position, and spraying a liquid detergent supplied from the detergent supply unit; And a pump unit provided between the detergent supply unit and the nozzle unit to receive liquid detergent from the detergent supply unit when the first position of the nozzle unit is moved, and to supply detergent to the nozzle unit when the nozzle unit is moved to the second position.

The pump unit may include: a housing unit having a first inlet through which the liquid detergent is introduced from the detergent supply unit, and retaining the liquid detergent supplied from the detergent supply unit therein; A first opening and closing part for opening and closing the first inlet; A rod unit interlocked with the movement of the nozzle unit to supply the liquid detergent stayed in the housing unit to the nozzle unit, and a discharge port configured to discharge the liquid detergent to the nozzle unit; And a second opening and closing portion for opening and closing the outlet.

In addition, the rod portion, the discharge portion is connected to the nozzle portion, the discharge port is formed; And an inlet connected to the outlet and having a second inlet configured to communicate the inside of the housing and the outlet.

The pump unit may further include a sealing unit coupled to the rod unit to seal the inside of the housing unit.

In addition, the sealing portion, the first sealing portion in close contact with the rod portion; And a second sealing part in close contact with the housing part.

In addition, the second sealing portion is preferably formed with a gas tight projection on the contact surface with the housing portion.

In addition, the rod portion is provided with a coupling protrusion, it is preferable that the sealing portion is formed with a coupling groove to which the coupling protrusion is detachably coupled.

The pump unit may further include an elastic member for moving the nozzle unit moved to the second position to the first position.

In addition, at least one of the first opening and closing portion and the second opening and closing portion preferably includes a ball valve for opening and closing the first inlet or the outlet in conjunction with the movement of the rod.

In addition, it is preferable to further include a nozzle operation unit for moving the nozzle unit.

In addition, the nozzle operation unit, a drive unit for generating a rotational force; And a cam portion that is eccentrically rotated by the driving portion and whose outer circumferential surface is in contact with the nozzle portion to move the nozzle portion.

According to the liquid detergent supplying apparatus of the present invention, by automatically injecting the liquid detergent, there is no hassle for the user to inject the liquid detergent at the time of washing, it is possible to add the desired amount of liquid detergent in a timely manner.

In addition, the present invention has a structure in which the second opening and closing portion to close the discharge port stably except when the nozzle portion moves to the second position to supply the liquid detergent normally, so that the liquid detergent is continuously discharged to the nozzle portion through the discharge port or Washing water can be prevented from flowing back to the pump portion or the detergent supply portion through the outlet.

In addition, the present invention can be added to the liquid detergent by using a low-cost small motor instead of a large expensive motor, the volume and weight of the entire device is reduced, manufacturing cost is reduced.

In addition, the present invention is provided with a sealing portion detachably coupled to the rod portion to seal the inside of the housing portion, it is possible to prevent the liquid detergent remaining inside the housing portion leak through the gap between the rod portion and the housing portion. , It is easy to replace the worn or damaged sealing part.

2 is a cross-sectional view showing a liquid detergent supply apparatus according to an embodiment of the present invention.

3 is a cross-sectional view showing a portion of a liquid detergent supply apparatus according to an embodiment of the present invention.

4 is an enlarged cross-sectional view illustrating main parts of the first and second opening and closing parts illustrated in FIG. 3.

5 is a cross-sectional view showing an operating state of the liquid detergent supply device shown in FIG.

FIG. 6 is an enlarged cross-sectional view of main parts of the first and second opening and closing parts shown in FIG.

Hereinafter, an embodiment of a liquid detergent supply apparatus according to the present invention with reference to the accompanying drawings. For convenience of description, the thicknesses of the lines and the size of the elements shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

2 is a cross-sectional view showing a liquid detergent supply apparatus according to an embodiment of the present invention, Figure 3 is a cross-sectional view showing a portion of a liquid detergent supply apparatus according to an embodiment of the present invention, Figure 4 is shown in FIG. It is an enlarged sectional view of the principal part of a 1st and 2nd opening and closing part.

2 to 4, the liquid detergent supply apparatus 100 according to an embodiment of the present invention is installed in a washing machine (not shown). Preferably, the liquid detergent supply device 100 is installed on a cabinet (not shown) forming the appearance of the washing machine. The liquid detergent supply device 100 injects the liquid detergent into a tub (not shown) installed inside the cabinet to allow the washing water to flow therein.

According to the present embodiment, the liquid detergent supply apparatus 100 includes a detergent supply unit 110, a nozzle unit 120, and a pump unit 130.

The detergent supply unit 110 accommodates detergent therein. In the present embodiment, the liquid detergent is defined as the liquid detergent, the liquid fibrous softener, the liquid bleach, and the like. The detergent supply unit 110 may be accommodated in the cabinet, accommodates the liquid detergent injected from the outside, and supplies the accommodated liquid detergent to the pump unit 130 to be described later.

The detergent supply unit 110 includes a receiving portion 111 for receiving a liquid detergent and a cover portion 115 covering the upper portion of the open receiving portion 111.

According to the present exemplary embodiment, an outlet 112 is formed at one side of the accommodating part 111, more specifically, at the side of the accommodating part 111 adjacent to the pump part 130. The liquid detergent contained in the accommodating part 111 is supplied to the pump part 130 through the outlet 112.

In addition, the cover 115 is provided to be exposed to the upper portion of the cabinet. The cover part 115 is provided to open and close the accommodating part 111, and the user may inject a liquid detergent into the accommodating part 111 by opening the cover part 115 exposed to the upper part of the cabinet.

The nozzle unit 120 is provided to be movable to the first position a or the second position b. The nozzle unit 120 is connected to the pump unit 130 receives liquid detergent from the detergent supply unit 110 through the pump unit 130, and sprays the supplied liquid detergent.

According to the present exemplary embodiment, the pressing surface 122 is formed at an upper portion of the nozzle unit 120, and a blowing hole 124 communicating with the inside of the pump unit 130 is formed in the nozzle unit 120. The nozzle unit 120 moves to the first position (a) or the second position (b) and receives liquid detergent from the detergent supply unit 110.

Here, the first position (a) is defined as the position in which the upward movement of the nozzle unit 120 is completed, and the second position (b) is defined as the position in which the downward movement of the nozzle unit 120 is completed. do. Detailed description thereof will be described later.

The connection pipe part 125 may be connected to the nozzle part 120. The liquid detergent introduced into the nozzle unit 120 is introduced into the tub through the connection pipe part 125. One side of the connection pipe section 125 is connected to the nozzle unit 120, the other side of the connection pipe section 125 is connected to the water supply pipe 10 for supplying wash water to the tub.

The pump unit 130 is provided between the detergent supply unit 110 and the nozzle unit 120. The pump unit 130 operates in conjunction with the movement of the nozzle unit 120. That is, the pump unit 130 receives the liquid detergent from the detergent supply unit 110 when the first position (a) of the nozzle unit 120 moves, and the detergent supply unit 110 when the second position (b) of the nozzle unit 120 moves. Inject the liquid detergent supplied from the nozzle unit 120. The pump part 130 includes a housing part 140, a first opening and closing part 150, a rod part 160, a second opening and closing part 170, and a sealing part 180.

The housing unit 140 is provided between the detergent supply unit 110 and the nozzle unit 120. The housing part 140 has a first inlet 142 through which the liquid detergent is introduced from the detergent supply part 110. The housing part 140 is a part which temporarily retains the liquid detergent supplied from the detergent supply unit 110, and the liquid detergent supplied from the detergent supply unit 110 is injected into the nozzle unit 120 before the housing unit 140 is supplied. Will temporarily stay inside

The housing unit 140 may be connected to the detergent supply unit 110 by the connection unit 145. The connection part 145 couples the housing part 140 to the detergent supply part 110, and provides a connection path connecting the outlet 112 of the detergent supply part 110 and the first inlet 142 of the housing part 140. .

The first opening and closing part 150 is provided to open and close the first inlet 142. The first opening and closing part 150 is disposed inside the housing part 140, specifically, above the first inlet 142. The first opening and closing part 150 may be provided with a ball valve (not shown) for opening and closing the first inlet 142 in conjunction with the movement of the rod 160.

According to the present embodiment, the ball valve is seated on the locking jaw 143 formed around the first inlet 142 to close the first inlet 142 and the housing when the first position (a) of the nozzle unit 120 moves. The first inlet 142 is opened by being raised by the vacuum pressure formed inside the unit 140.

The rod part 160 supplies the liquid detergent stayed in the housing part 140 to the nozzle part 120 in association with the movement of the nozzle part 120. The rod part 160 is provided inside the nozzle part 120 and the housing part 140, and is provided to be movable up and down along the nozzle part 120. The flow path F communicating with the nozzle unit 120 is formed inside the rod 160. According to the present embodiment, the rod 160 includes an outlet 161 and an inlet 165.

The discharge part 161 is formed at a side adjacent to the nozzle part 120 and is connected to the nozzle part 120. The discharge part 161 is provided with a discharge port 162 for discharging the liquid detergent to the nozzle unit 120. The outlet 162 is connected to the flow path (F) to communicate the flow path (F) with the interior of the nozzle unit 120, the liquid detergent flowing through the flow path (F) nozzle portion 120 through the discharge port 162 Is discharged into the interior.

The inlet 165 is formed at a side adjacent to the first opening and closing part 150 and connected to the outlet 161. The inlet 165 is formed with a second inlet 166 which communicates the inside of the housing 140 with the outlet 162. The second inlet 166 is in communication with the outlet 162 through the flow path (F), the liquid detergent stayed in the interior of the housing 140, the interior of the rod 160 through the second inlet 166, In other words, it flows into the flow path (F).

In this embodiment, the inlet 165 is detachably coupled to the outlet 161. The inlet 165 has one end portion adjacent to the outlet 161 is fitted into the outlet 161, thereby forming a flow path F therein together with the outlet 161 and the outlet 161. Connected.

The second opening and closing part 170 is provided to open and close the outlet 162. The second opening and closing part 170 is disposed above the discharge part 161, more specifically, the discharge port 162. The second opening and closing unit 170 may be provided with a ball valve (not shown) to open and close the outlet 162 in conjunction with the movement of the rod 160.

According to the present embodiment, the ball valve is seated on the catching jaw 163 formed around the outlet 162 to close the outlet 162 and the outlet 162 when the second position (b) of the nozzle unit 120 is moved. It is raised by the hydraulic pressure of the liquid detergent discharged through the opening 162.

The second opening and closing part 170 opens the outlet 162 only while the nozzle unit 120 moves to the second position (b) to increase the hydraulic pressure of the liquid detergent discharged through the outlet 162, and the nozzle unit ( When the 120 is moved to the first position (a) or the movement of the nozzle unit 120 is stopped, the outlet 162 is closed.

The second opening / closing unit 170 can stop the operation of the nozzle manipulator 190 to be described later and stop the nozzle unit 120 in the middle, that is, the movement of the nozzle unit 120 is stopped in the first position a and the second. Even when stopped between the positions (b), since the outlet 162 is stably closed, the liquid detergent is continuously discharged to the nozzle unit 120 through the outlet 162 or the washing water of the water supply pipe 10 is discharged 162. It can be prevented to flow back to the pump 130 or the detergent supply unit 110 through).

The sealing part 180 is coupled to the rod part 160 to seal the inside of the housing part 140. Preferably, the sealing unit 180 is formed in a ring shape. The sealing unit 180 is provided in a space formed on the outside of the discharge unit 161 and the outside of the inlet 165, and includes a first sealing unit 181 and a second sealing unit 185.

The first sealing part 181 is a portion corresponding to the inside of the sealing part 180 and is formed to penetrate the inside thereof. The rod portion 160, more specifically, the inflow portion 165 is inserted into the first sealing portion 181, and the first sealing portion 181 is in close contact with the outer wall of the rod portion 160.

The second sealing part 185 is a portion corresponding to the outside of the sealing part 180 and is formed to extend outside the first sealing part 181. The outer circumferential surface of the second sealing part 185 is in close contact with the inner wall of the housing part 140.

The airtight protrusion 186 is formed in the second sealing part 185. The airtight protrusion 186 is formed to protrude on the contact surface with the housing part 140, that is, the outer circumferential surface of the second sealing part 185 to reinforce the airtightness between the second sealing part 185 and the housing part 140.

According to the sealing part 180 as described above, the first sealing part 181 is in close contact with the outer wall of the rod 160, the second sealing part 185 is in close contact with the inner wall of the housing portion 140 By forming a, the liquid detergent stayed in the housing 140 is sealed inside the housing 140 so that the liquid detergent does not leak through the gap between the rod 160 and the housing 140.

The sealing unit 180 is detachably coupled to the rod unit 160. According to the present embodiment, the rod part 160 is provided with a coupling protrusion 168, and a coupling groove portion in which the coupling protrusion 168 is detachably coupled to one side of the sealing portion 180 facing the coupling protrusion 168. 182 is formed.

Coupling protrusion 168 is provided at the end of the rod 160, more specifically, the discharge portion 161, is provided to protrude toward the sealing portion 180. Preferably, the engaging projection 168 is formed to have a hook-shaped end. The coupling groove 182 is formed to be positioned between the first sealing portion 181 and the second sealing portion 185, and is formed concave in a shape corresponding to the shape of the coupling protrusion 168.

The assembly process of the rod part 160 and the sealing part 180 will be described briefly. First, the sealing part 180 is inserted so that the coupling protrusion 168 provided at the end of the discharge part 161 is fitted into the coupling groove 182. Coupled to the discharge portion (161). Then, the inlet 165 is inserted through the penetrating inner side of the first sealing unit 181, while being fitted into the outlet 161 to be coupled.

Accordingly, the sealing unit 180 is disposed in the space formed between the outer side of the discharge unit 161 and the inlet unit 165 so that the first sealing unit 181 is in close contact with the outer wall of the rod unit 160 and the second The sealing part 185 forms a sealed structure in close contact with the inner wall of the housing part 140, and the inlet part 165 is combined with the discharge part 161 to form the rod part 160, while the sealing part ( Supporting the other side of the 180 to suppress the separation of the sealing unit 180.

The pump unit 130 of the present embodiment may include an elastic member 135. The elastic member 135 is provided in the housing part 140 to move the nozzle part 120 moved to the second position (b) to the first position (a). Preferably, the elastic member 135 may be a coil spring whose one side is supported by the latching jaw 143 of the housing part 140 and the other side is supported by the lower part of the rod part 160 or the sealing part 180. . The elastic member 135 moves the rod part 160 moved downward by the nozzle part 120 moved to the second position (b) to the upper direction, thereby the rod part 160 and the nozzle part 120. It provides an elastic force to move to the first position (a).

The liquid detergent supply apparatus 100 of the present embodiment may include a nozzle manipulation unit 190 for moving the nozzle unit 120. The nozzle manipulation unit 190 includes a driving unit 192 and a cam unit 194.

The driving unit 192 generates a rotational force. The driving unit 192 may include a motor for generating a rotation force. According to the present embodiment, the driving force required for the motor of the driving unit 192 is enough to overcome the elastic force of the elastic member 135 that can move the nozzle unit 120 to the second position (b). Is enough. Therefore, the driving unit 192 may be provided with a small motor of low cost instead of an expensive large motor.

The cam unit 194 is eccentrically rotated by the driving unit 192, and the outer circumferential surface is in contact with the pressing surface 122 of the nozzle unit 120. According to the cam part 194, the nozzle part 120 is located in the 1st position (a) when the short diameter part s side of the cam part 194 contacts the pressing surface 122 (FIG. 3), and the cam part ( When the long diameter portion 1 side of the cam portion 194 is rotated to contact the pressing surface 122, the nozzle portion 120 is pressed by the cam portion 194 to move to the second position b (FIG. 5). ).

FIG. 5 is a cross-sectional view illustrating an operating state of the liquid detergent supply device illustrated in FIG. 3, and FIG. 6 is an enlarged cross-sectional view of main parts of the first and second opening and closing parts illustrated in FIG. 5.

Hereinafter, the operation and effect of the liquid detergent supply device 100 according to the present embodiment will be described with reference to FIGS. 3 to 6.

As shown in FIG. 3, in the state in which the nozzle unit 120 is located at the first position a, the nozzle operating unit 190 is operated as shown in FIG. 5 to operate the long diameter part 1 of the cam unit 194. When the pressing surface 122 is pressed by the contact with, the nozzle unit 120 is moved from the first position (a) to the second position (b). Here, the inside of the housing unit 140 is illustrated as a state in which the liquid detergent supplied from the detergent supply unit 110 is retained.

When the nozzle unit 120 is moved to the second position (b), the rod unit 160 is moved downward in association with the movement of the nozzle unit 120. Accordingly, the liquid detergent supplied from the detergent supply unit 110 and remaining in the housing unit 140 flows into the flow path F through the second inlet 166 under the inlet 165.

Liquid detergent introduced into the flow path (F) is discharged through the discharge port 162 above the discharge portion 161, the second opening and closing portion 170 is a ball valve by the hydraulic pressure of the liquid detergent discharged through the discharge port (162) ( As shown in the drawing, the outlet 162 is opened.

The liquid detergent discharged to the nozzle unit 120 through the open outlet 162 is introduced into the connection pipe part 125 through the ejection hole 124. The liquid detergent introduced into the connection pipe part 125 may be added to the tub 2 (see FIG. 1).

As shown in FIG. 3, when the nozzle manipulation unit 190 is operated to contact the pressing surface 122 of the short diameter portion s side of the cam unit 194, the pressing force on the nozzle unit 120 is released. Accordingly, the rod 160 is moved upward by the elastic force of the elastic member 135, and the nozzle 120 is moved to the first position a according to the movement of the rod 160.

When the nozzle unit 120 moves as described above, while the discharge of the liquid detergent through the outlet 162 is stopped, the ball valve of the second opening / closing unit 170 is seated on the locking jaw 163 formed around the outlet 162. The outlet 162 is closed.

In addition, the ball valve of the first opening and closing portion 150 is raised by the vacuum pressure generated as the liquid detergent is introduced into the nozzle portion 120 from the inside of the housing portion 140 when the second opening and closing portion 170 is opened. The first inlet 142 is opened, and thus the liquid detergent contained in the detergent supply unit 110 and the connection unit 145 is supplied to the housing unit 140 through the opened first inlet 142 to provide the housing unit 140. Stay in the interior.

The detergent is added as described above, the operation of the nozzle operation unit 190, that is, the cam unit 194 continues to rotate, and thus the first position (a) movement and the second position (b) movement of the nozzle unit 120 are repeated. Can be continued.

In addition, since the pump unit 130 injects a predetermined amount of liquid detergent every time the nozzle unit 120 moves, controlling the operation of the nozzle operation unit 190, that is, controlling the rotational speed of the cam unit 194 may control the nozzle unit ( By adjusting the number of movements of 120 and the number of detergent inputs of the pump unit 130 according to this, the desired amount of liquid detergent may be introduced into the tub 2.

Therefore, the liquid detergent supply apparatus 100 of the present embodiment, by automatically introducing the liquid detergent, there is no hassle of the user to inject the liquid detergent at the time of washing, it is possible to add the desired amount of liquid detergent in a timely manner.

In addition, in the liquid detergent supply apparatus 100 of the present embodiment, the second opening and closing portion 170 stably closes the outlet 162 except when the nozzle unit 120 moves to the second position (b) to supply liquid detergent normally. By taking such a structure, the liquid detergent is continuously discharged to the nozzle unit 120 through the outlet 162 or the washing water of the water supply pipe 10 through the outlet 162, the pump unit 130 or the detergent supply unit 110 Backflow can be prevented.

In addition, the liquid detergent supply apparatus 100 of the present embodiment can be introduced into the liquid detergent by using a low-cost small motor instead of an expensive large motor, thereby reducing the volume and weight of the entire apparatus, and the manufacturing cost is reduced.

In addition, the liquid detergent supply apparatus 100 of the present embodiment is provided with a sealing portion 180 detachably coupled to the rod portion 160 to seal the inside of the housing portion 140, thereby providing inside the housing portion 140. The retained liquid detergent may be prevented from leaking through the gap between the rod part 160 and the housing part 140, and it is easy to replace the worn or damaged sealing part 180.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand. In addition, the drum-type washing machine has been described as an example, but this is merely exemplary, and the present invention may be applied to a washing machine other than the drum-type washing machine. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

Claims

Detergent supply unit for supplying a liquid detergent;

A nozzle unit provided to be movable to a first position or a second position, and spraying a liquid detergent supplied from the detergent supply unit; And

And a pump unit provided between the detergent supply unit and the nozzle unit to receive liquid detergent from the detergent supply unit when the first position of the nozzle moves, and to supply detergent to the nozzle unit when the second position of the nozzle moves. Liquid detergent supply device characterized in that.
The method of claim 1, wherein the pump unit,

A first inlet through which the liquid detergent is introduced from the detergent supply unit, and a housing unit configured to retain the liquid detergent supplied from the detergent supply unit therein;

A first opening and closing part for opening and closing the first inlet;

A rod unit interlocked with the movement of the nozzle unit to supply the liquid detergent stayed in the housing unit to the nozzle unit, and a discharge port configured to discharge the liquid detergent to the nozzle unit; And

Liquid detergent supply device comprising a second opening and closing the opening and closing the outlet.
The method of claim 2, wherein the rod portion,

A discharge part connected to the nozzle part and in which the discharge hole is formed; And

And an inlet part connected to the outlet part and having a second inlet port communicating the inside of the housing part and the outlet port.
The method of claim 2,

The pump unit further comprises a sealing unit coupled to the rod unit to seal the inside of the housing unit.
The method of claim 4, wherein the sealing portion,

A first sealing part in close contact with the rod part; And

And a second sealing part in close contact with the housing part.
The method of claim 5,

The second sealing part is a liquid detergent supply device, characterized in that the airtight protrusions are formed on the contact surface with the housing.
The method of claim 4, wherein

The rod portion is provided with a coupling protrusion,

The sealing unit is a liquid detergent supply device characterized in that the coupling groove is formed to be detachably coupled to the coupling projection.
The method of claim 2,

The pump unit further comprises an elastic member for moving the nozzle portion moved to the second position to the first position.
The method of claim 2,

At least one of the first opening and closing portion and the second opening and closing portion of the liquid detergent supply device, characterized in that it comprises a ball valve for opening and closing the first inlet or the outlet in conjunction with the movement of the rod.
The method of claim 1,

The liquid detergent supply apparatus further comprises a nozzle operation unit for moving the nozzle unit.
The method of claim 10, wherein the nozzle operation unit,

A driving unit generating a rotational force; And

And a cam portion that is eccentrically rotated by the driving portion and whose outer circumferential surface is in contact with the nozzle portion to move the nozzle portion.