KR20170039995A - Washing machine - Google Patents

Abstract

According to the present invention, a washing machine includes: an external bath filled with water; an inner bath configured to accommodate laundry and rotate around a vertical shaft inside the external bath; a circulation nozzle configured to spray water into the inner bath; a circulation hose configured to guide water discharged from the external bath to the circulation nozzle; and a pump including a pump motor able to control a rotation speed thereof, and an impeller configured to rotate by the pump motor and transmit the water inside the circulation hose to the circulation nozzle. Thus, the present invention is able to provide a washing machine capable of changing the pressure of water supplied to a circulation nozzle.

Description

Washing machine {WASHING MACHINE}

The present invention relates to a washing machine.

Generally, a washing machine is a device that processes laundry through various operations such as washing, dehydrating and / or drying. The washing machine includes an outer tank containing water and an inner tank rotatably provided in the outer tank, and the inner tank is provided with a plurality of through holes through which water passes.

When a user selects a desired course using the control panel in a state where laundry (such as clothes) or bedding (hereinafter also referred to as " foam ") is put in the inner tub, a predetermined algorithm is executed corresponding to the selected course , Water supply and drainage, washing, rinsing, and dehydration.

The rinse cycle, which is generally performed in a top loading washing machine, is performed by supplying water at a sufficient water level that can be put in the inner tank, and then performing deep rinsing (deep rinsing) for rotating the pulsator provided in the inner tank, to be. While this method has an advantage of excellent rinsing performance, it has a disadvantage that the amount of water used is large.

Conventional washing machines include a nozzle for spraying water into an inner tank, a circulation hose for guiding water discharged from the outer tank to the nozzle, and a circulation pump for feeding water in the circulation hose. In such a washing machine, the circulation pump uses a synchronous motor, so that the flow rate of the pump is constant. Therefore, water of constant water pressure is constantly supplied to the nozzle, so that it is not possible to adjust the shape of the water flow jetted through the nozzle, the jetting angle of the nozzle, and the like.

Depending on the amount of bolls put into the inner tank (hereinafter referred to as the " bloat amount "), the height of the boll in the inner tank varies. However, there is a limit to wetting the bubbles uniformly regardless of the amount of the bubbles in the nozzle for spraying the water at a certain angle as in the prior art.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a washing machine capable of varying the water pressure of water supplied to a circulation nozzle.

Secondly, the present invention provides a washing machine capable of reducing washing variation caused by the amount of laundry.

Thirdly, it is an object of the present invention to provide a washing machine capable of adjusting the spraying angle of the circulation nozzle according to the amount of the laundry.

Fourth, a washing machine having both a circulation nozzle and a direct water nozzle is provided.

The washing machine of the present invention comprises: an outer tub containing water; An inner tub which receives the laundry and is rotated about a vertical axis in the outer tub; A circulation nozzle for spraying water into the inner tank; A circulation hose for guiding the water discharged from the outer tank to the circulation nozzle; And a pump equipped with a pump motor capable of rotating speed control and an impeller rotated by the pump motor to transfer water in the circulation hose to the circulation nozzle.

The washing machine according to the present invention can vary the spraying angle of the circulation nozzle and effectively wet the air exposed in the air in the inner tank.

Secondly, by varying the spraying angle of the circulation nozzle according to the amount of laundry to be laundered, there is an effect that the laundry variation due to the laundry amount can be reduced.

Third, there is an effect that the amount of water used for washing can be saved, and the pores can be evenly moistened.

Fourth, water can be added to the air bubbles in the air using the circulation nozzle, thereby preventing discoloration caused by exposing the bubbles to air or secondary contamination due to solidification of the detergent residue.

1 is a perspective view of a washing machine according to an embodiment of the present invention.
2 is a side sectional view of the washing machine shown in Fig.
FIG. 3 is a block diagram showing the control relationship between the main components of the washing machine shown in FIG. 1. FIG.
Fig. 4 (a) shows a state in which water is sprayed through the circulation nozzle when the inner tank is no load, and Fig. 4 (b) shows a state in which water is sprayed through the circulation nozzle when the inner tank is full load Respectively.
Fig. 5 shows the top cover viewed from above and down.
Fig. 6 shows the top cover viewed from the front. Fig.
Fig. 7 (a) shows a rear view of the top cover when the circulation nozzle is installed, and Fig. 7 (b) shows a rear view of the top cover in a state in which the circulation nozzle is separated.
FIG. 8A is a view showing the back side of the circulation nozzle, and FIG. 8B is a view showing a coupling structure of the top cover and the circulation nozzle.
FIG. 9A is a side view of a circulation nozzle and a nozzle cap assembly provided on a top cover, FIG. 9B is a perspective view showing a state where a circulation nozzle is installed on a top cover, and FIG. 9C is a side cross- .
10 (a) schematically shows a height at which water sprayed through the circulation nozzle contacts the inner tank, according to the rotation speed of the cleaning motor, (b) FIG. 2 is a perspective view of a water jetting apparatus according to a first embodiment of the present invention; FIG.
Fig. 11 schematically shows the injection range of the circulation nozzle and the direct water nozzle.
12 shows a circulation nozzle according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

1 is a perspective view of a washing machine according to an embodiment of the present invention. 2 is a side sectional view of the washing machine shown in Fig. FIG. 3 is a block diagram showing the control relationship between the main components of the washing machine shown in FIG. 1. FIG. Fig. 4 (a) shows a state in which water is sprayed through the circulation nozzle when the inner tank is no load, and Fig. 4 (b) shows a state in which water is sprayed through the circulation nozzle when the inner tank is full load Respectively. Fig. 5 shows the top cover viewed from above and down. Fig. 6 shows the top cover viewed from the front. Fig. Fig. 7 (a) shows a rear view of the top cover when the circulation nozzle is installed, and Fig. 7 (b) shows a rear view of the top cover in a state in which the circulation nozzle is separated. FIG. 8A is a view showing the back side of the circulation nozzle, and FIG. 8B is a view showing a coupling structure of the top cover and the circulation nozzle. FIG. 9A is a side view of a circulation nozzle and a nozzle cap assembly provided on a top cover, FIG. 9B is a perspective view showing a state where a circulation nozzle is installed on a top cover, and FIG. 9C is a side cross- . 10 (a) schematically shows the height of water sprayed through the circulation nozzle against the inner tank in accordance with the rotation speed of the washing motor, (b) shows a state in which the circulation nozzle FIG. 2 is a perspective view of a water jetting apparatus according to a first embodiment of the present invention; FIG. The following description will be made with reference to these drawings.

The washing machine according to an embodiment of the present invention may include a base 9, a cabinet 1, a top cover 2, a lid 4, and a control panel 3.

The base 9 may be supported by four supporting legs 16 provided in the vicinity of the four corners of the cabinet 1 in a flat shape corresponding to the bottom on which the washing machine is installed. A pump 45, which will be described later, may be installed on the base 9.

The cabinet 1 may be supported by a base 9 and may include a front side, both side surfaces and a rear side which are installed along the outer edge of the base 9 so as to form a space for receiving the outer tank 6 inwardly .

A top cover 2 may be coupled to the upper end of the cabinet 1. The top cover 2 may be provided with a charging port for charging and discharging laundry (or "foil"), and a lead 4 for opening and closing the charging port may be rotatably coupled to the top cover 2 .

In the cabinet 1, an outer tank 6 for storing water can be disposed. The outer tub 6 may be provided in a form suspended from the cabinet 1 by a hanger 8. The hanger 8 can include a support rod 8a whose upper end is pivotably engaged with the top cover 2 and a suspension 8b provided on the support rod 8a to buffer the vibration of the outer tank 6. [ have. Such a suspension 8b may be configured in various forms. For example, the suspension 8b supports the outer tank 5 and is fixedly arranged on the lower end of the support rod 8a, with the outer tank support member being moved along the support rod 8a as the outer tank 6 vibrates , And a spring for elastically supporting the outer tub supporting member.

The outer tub 6 may be open on the upper side and the outer tub cover 7 may be provided on the opened upper side. The outer covering cover 7 may be formed in a ring shape having a central opening portion for the entry and exit of laundry.

In the outer tub 6, an inner tub 5 accommodating the laundry and rotated around a vertical axis may be disposed. A plurality of holes through which water passes can be formed in the inner tank 5 and water can be exchanged between the inner tank 5 and the outer tank 6 through the hole 5a.

A drainage bellows 18 for draining water from the outer tub 6 and a drain valve 44 for interrupting the drainage bellows 18 can be provided. The drainage bellows 18 is connected to the pump 45 and water can be supplied to the pump 45 through the drainage bellows 18 when the drainage valve 44 is opened under the control of the controller 30 . It will be understood that the pump 45 is operated in a state in which the drain valve 18 is opened, although it will not be described below.

A pulsator 15 (see Fig. 10) can be rotatably provided in the inner lower portion of the inner tank 5. [ The pulsator 15 may include a plurality of upwardly projecting radial ribs. When pulsator 15 is rotated, water flow can be formed by the ribs.

A washing motor 41 may be disposed in the cabinet 1 to provide power for rotating the inner tub 5 and the pulsator 15. The washing motor 41 may be provided below the outer tub 6 and may be provided in the form of hanging in the cabinet 1 together with the outer tub 6. The rotary shaft of the washing motor 41 is always engaged with the pulsator 15 and can be engaged or disengaged from the inner tub 5 in accordance with the switching operation of the clutch (not shown). The pulsator 15 and the inner tub 5 are integrally rotated when the rotating shaft of the washing motor 41 is engaged with the inner tub 5 so that the rotating shaft is separated from the inner tub 5 Only the pulsator 15 is rotated in the state where the inner tank 5 is stopped.

The washing motor 41 is capable of speed control and can be controlled under the control of the control unit 30. [ As the washing motor 41, a BLDC motor (Brushless Direct Current Motor) which is widely applied to an ordinary washing machine is suitable, but it is not necessarily limited thereto. As a method of controlling the speed of the BLDC motor, a method of controlling the output of the motor by using a proportional-integral controller (PI controller) and a proportional-integral-derivative controller (PID controller) Various methods including vector control of the input current of the motor are already well known and the speed control of the washing motor 41 can be performed by the kind of the motor and the corresponding known method, Is omitted.

The control panel 3 includes an input unit 46 such as a key, a button, and a touch panel that can set, select, and adjust various operation modes provided by the washing machine, and an input unit 46 such as a washing machine, A display panel such as a lamp, an LCD panel, and an LED panel may be provided.

The memory 47 stores various data necessary for the operation of the washing machine. The memory 47 may be composed of various recording media such as volatile / nonvolatile RAM, ROM, and flash memory.

The top cover 2 may be provided with a dispenser 17 for supplying an additive acting on laundry to the inner tank 5 together with water. The additives supplied by the dispenser 17 include detergents and fabric softeners.

At least one pump is required to drain or circulate the water in the outer tub 6 through the circulating hose 10. The pump for drainage and the pump for circulation may be separately provided, but it is also possible to selectively perform drainage and circulation by using one pump 45 as in the embodiment.

The pump 45 may include a pump motor 45a and an impeller (not shown) that is rotated by the pump motor 45a and presses the water. The pump motor 45a is capable of speed control and can be constituted by a BLDC motor or the like like the washing motor 41. [

The pump 45 may include two ports, that is, a circulating water discharge port 451 and a drain port 452, for discharging water pumped by the impeller. When the pump motor is rotated in the forward direction, water is discharged through the circulation water discharge port 451, and when the pump motor is rotated in the reverse direction, the water can be discharged through the drain port 452.

The circulation hose 10 guides the water pumped by the pump 45 to the circulation nozzle 12 so that one end is connected to the circulation water discharge port 451 and the other end is connected to the circulation nozzle 12 .

The dispenser 17 may include a dispenser housing 171 disposed inside the top cover 2 and a drawer 172 containing the additive and being drawably received in the dispenser housing 171. The top cover 2 may be provided with a draw opening for allowing the drawer 172 to pass therethrough. An opening may be formed in the dispenser housing 171 corresponding to the draw opening, have.

A plurality of water supply ports may be formed on the upper surface of the drawer housing 171. These water supply ports are connected to a first water supply port 171a and a second water supply port 171b through which the hot water and cold water supplied to the detergent receiving portion 172a respectively enter and a cold water , And a third water supply port 171c through which hot water flows. Hereinafter, cold water flows into the third water supply port 171c as an example, but hot water may flow into the third water supply port 171c depending on the embodiment.

The washing machine may include one or more water supply hoses (not shown) for guiding water supplied from an external water source such as a faucet. These water supply hoses include a first water supply hose (not shown) for guiding the water supplied from the cold water source to the first water supply port 171a and a second water supply hose (not shown) for guiding the water supplied from the hot water source to the second water supply port 171b A water supply hose (not shown), and a third water supply hose (not shown) for guiding the water supplied from the cold water source to the third water supply port 171c.

Further, one or more water supply valves 43 for interrupting the water supply hoses may be provided. For example, a first water supply valve (not shown) for interrupting a first water supply hose (not shown), a second water supply valve (not shown) for interrupting the second water supply hose, (Not shown), and each of the water supply valves may be operated under the control of the control unit 30. [

The washing machine may include a water level sensor (42) for sensing the water level in the outer tank (6). The control unit 30 can control the water supply valve 43 and / or the drain valve 44 according to the water level sensed by the water level sensor 42. [

The washing machine is a nozzle for spraying water into the inner tank 5, and may include a circulation nozzle 12 and a direct water nozzle 13. The circulation nozzle 12 and the direct water nozzle 13 may be installed on the top cover 2 and preferably on both sides with the drawer 172 therebetween. A direct water supply hose (not shown) for guiding the water supplied from the cold water source to the direct water nozzle 13, and a fourth water supply valve (not shown) for interrupting the direct water supply hose.

The circulation nozzle 12 includes a water supply pipe 121 for guiding the water supplied through the circulation hose 10 and a diffuser 122 for refracting the water discharged from the water supply pipe 121 downward into the inner tank 5, . ≪ / RTI > The circulation nozzle 12 may be formed of a single piece of synthetic resin.

The water supply pipe 121 may extend straight to the outlet 121b for discharging water from the inlet 121a into the diffuser 122 through which the water is supplied from the direct supply hose. It is preferable that the outlet 121b is formed smaller in diameter than the inlet 121a so that the water pressure discharged through the outlet 121b can be increased.

A radial protrusion 125 protruding from the outer circumferential surface of the water supply pipe 121 may be formed. The pair of radial protrusions 125 may be formed symmetrically with respect to the center of the water supply pipe 121.

The hose coupling protrusion 126 may protrude from the outer circumferential surface of the water supply pipe 121. (Not shown) into which the hose coupling protrusion 126 is inserted may be formed on the inner circumferential surface of the circulation hose 10.

The circulation nozzle 12 may include a plate 123 extending radially outward from the outer circumferential surface of the water supply pipe 121. The rear surface of the plate 123 faces the front surface of the top cover 2 and the diffuser 122 can be formed on the front surface of the plate 123.

The diffuser 122 may include a collision surface 124 in which water discharged through the outlet 121b of the water supply pipe 121 collides and is deflected downward. The diffuser 122 has a jet port 122h projecting from the front surface of the plate 123 and jetting water into the inner tank 5. [ That is, the diffuser 122 can be gradually expanded in diameter from the outlet 121b of the water supply pipe 121 toward the injection hole 122h as a chamber or a funnel shape depressed from the injection port 122h. The portion of the inner surface of the diffuser 122 forming the chamber located at the front end of the outlet 121b of the water supply pipe 121 is inclined so that the water discharged from the outlet 121b may be repelled downward, The inclined portion corresponds to the impact surface 124. [

The circulation nozzle 12 protrudes from the plate 123 and reaches the injection port 122h from the upper side of the injection port 122h. The circulation nozzle 12 is inclined at an inclined portion 123a. A gap is formed between the end of the inclined portion 123a and the front surface of the top cover 2 so that even when the water flows along the inclined portion 123a and then falls through the jet opening 122h, It is possible to prevent contact with the top cover 2.

The fixing protrusion 128 may protrude from the back surface of the plate 123. The fixing protrusion 128 may include a pin 128a extending vertically from the back surface of the plate 123 and a head 128b formed at an end of the pin 128a having an outer diameter larger than the pin 128a.

The plate 123 may be provided with an opening 123h. A locking tab 127 protruding from the edge of the opening 123h into the opening 123h may be formed. The locking tab 127 is in the form of a cantilever whose tip is located in the opening 123h and can be bent based on the connection with the plate 123. [ The pressing tab 127a may be formed at the end of the locking tab 127 so as to protrude in the direction in which the back surface of the plate 123 faces.

A nozzle mount 2a which is recessed rearward can be formed on the front surface of the top cover 2. The first mounting hole h1 and the first mounting hole h1 are spaced apart from each other in the nozzle mount 2a so as to be spaced from each other in the circumferential direction with respect to the center of the first mounting hole h1 (or the center of the water supply pipe 121) And an arc-shaped second installation hole h2 may be formed.

The first installation hole h1 includes a circular water supply pipe insertion section h11 into which the water supply pipe 121 is inserted and first and second radial projection insertion sections extending in the radial direction from the water supply pipe insertion section h11 h12 and h13 and a pressing projection insertion section h14 which is further extended in the radial direction from the second radial projection insertion section h13.

The second installation hole h2 is a head insertion section in which the insertion of the head 128b is simultaneously performed in the process of inserting the radial projections 125 into the first and second radial projection insertion sections h12 and h13, h21 and a projection guide section h22 extending in the circumferential direction from the head insertion section h21 with a width smaller than the diameter of the head insertion section h21.

A process of installing the circulation nozzle 12 will be described below.

The water supply pipe 121 is inserted into the water supply pipe insertion section h11 from the front of the top cover 2 after aligning the positions of the radial projections 125 with the radial projection insertion sections h12 and h13. At this time, the process of inserting the head 128b of the fixing protrusion 128 into the head insertion section h21 is performed at the same time, and the back surface of the plate 123 is positioned on the front surface of the top cover 2. [ The pressing projection 127a of the locking tab 127 is in tight contact with the front surface of the top cover 2 so that the locking tab 127 is elastically bent forward relative to the connection with the plate 123 .

Thereafter, when the circulation nozzle 22 is rotated, the head 128b is moved along the projection guide section h22. In this process, the pressing protrusion 127a of the locking tab 127 is pivoted along the front surface of the top cover 2 in a deformed state, and when it reaches a predetermined position, it is inserted into the locking tab insertion section h14, The installation of the circulation nozzle 12 is completed.

The radial protrusion 125 is positioned on the back surface of the top cover 2 so that the circulation nozzle 12 is separated from the front of the first installation h1 It does not. Since the fixing projection 128 is also located in the projection guide section h22 having a width smaller than the diameter of the head 128b, the head 128b can not pass through the guide section h22, Is not released forward of the first installation hole (h1). The injection direction of the circulation nozzle 12 can be set as desired by designing the length of the projection guide section h22 and the positions of the locking tab 127 and the corresponding insertion section h14.

On the other hand, when water is supplied through the water supply pipe 121 at a sufficient water pressure, the water sprayed through the injection port 122h is maximally spread in the left and right directions at the maximum spray width angle? (See FIG. 6), it can be sprayed upward by the maximum vertical spray angle? V with respect to the vertical line when viewed from the side (see FIG. 9), but as the water pressure supplied through the water supply pipe 121 becomes lower, 12 and the maximum height at which the water flow reaches.

The water pressure of the water supplied through the water supply pipe 121 varies depending on the rotational speed of the pump motor 45a and the control unit 30 varies the rotational speed of the pump motor 45a, The shape of the stream can be controlled. That is, as shown in Fig. 10, when the pump motor 45a is rotated from the circulation nozzle 12 in the order of (I), (II) The maximum height at which the jetted water reaches the inner tank 5 is increased (see FIG. 10A), and the horizontal jet angle of the circulation nozzle 12 is increased (see FIG. 10B).

On the other hand, the control unit 30 may include a bulk determination module 31 and an operation control module 32. The amount-of-waste determining module 32 can determine the amount of the bag contained in the inner tank 5 (hereinafter referred to as " bagged amount "). The inertia of the inner tank 5 or the pulsator 15 may be an indicator for determining the amount of waste. For example, when rotating the inner tub 5 in the stopped state, since the stopping inertia of the inner tub 5 is larger the larger the filling amount, the more time is required until the inner tub 5 reaches the predetermined target speed. Therefore, the amount-of-plucking determination module 32 can determine the amount of plucking based on the time it takes for the inner tank 5 to reach the target speed. As another example, when braking the rotating inner drum 5, it is also possible to determine the drum take-off amount based on the time taken for the inner drum 5 to stop. In this case, the rotational inertia of the inner drum 5, . In addition, the amount of laundry may be determined in consideration of the change in the input or output current of the washing motor 41, the electromotive force, and the like. As a method for obtaining the amount of waste is already well known in the related art, a detailed description will be omitted, but the amount of waste determination module 32 can determine the amount of waste by various methods already known.

The operation control module 32 can control various electronic devices such as the washing motor 41, the water supply valve 43, the drain valve 44, and the pump motor 45a. The operation control module 32 can control the devices based on the water level sensed by the water level sensor 42, the volume determined by the volume determination module 31, and the like.

The operation control module 32 controls the supply of the water to the inner tank 5 through the control of the water supply valve 43 and then controls the rotational speed of the pump motor 45a in accordance with the amount of water determined by the bulking determination module 31 . Particularly, the larger the amount determined by the bulk amount determination module 31, the greater the rotational speed of the pump motor 45a. W increase and the maximum vertical spray angle? V by increasing the spray pressure of the circulation nozzle 12 when there are many bubbles to be injected into the inner tank 5. [

The operation control module 32 can continuously rotate the washing motor 41 in one direction while the pump motor 45a is rotating. At this time, the laundry motor 41 can be rotated in a state where the hopper 5 is rotated integrally with the inner tank 5 in a state in which the hopper 5 sticks to the inner surface of the inner tank, that is, the drum D Of the speed of rotation. The water sprayed through the circulation nozzle 12 can effectively wet the bubble.

The direct water nozzle 13 has a structure similar to that of the circulation nozzle 12 and is also connected to the top cover 2. The same reference numerals are given to the same components as those described above, I shall follow the foregoing. However, the direct water nozzle 13 and the circulation nozzle 12 may be arranged such that the elements constituting each nozzle are mirror symmetric, as shown in FIGS. 6 to 7.

The nozzle cap 14 may be coupled to the circulation nozzle 12 and the direct water nozzle 13, respectively. The nozzle cap 14 is formed to surround the outside of the diffuser 122 of each of the nozzles 12 and 13 and has an opening communicating with the ejection port of the nozzles 12 and 13. The nozzle cap 14 may be engaged with the plate 123.

Fig. 11 schematically shows the injection range of the circulation nozzle and the direct water nozzle. 11, one side is referred to as a first region S1 and the other side is referred to as a second region S2 (S2), with reference to a reference plane F extending in the front-rear direction in a plane to which the rotational axis c of the inner tank 5 belongs. The circulation nozzle 12 is arranged in the first area S1 to spray water so as to reach the second area S2 and the direct water nozzle 13 is arranged in the second area S2, 1 region S1 as shown in Fig. That is, the circulation nozzle 12 opens at least a part of the ejection opening toward the second area S2, and the direct water nozzle 13 can open at least a part of the ejection opening toward the first area S1.

The inner tank 5 may include a bottom on which the pulsator 15 is disposed and a cylindrical drum extending upward from the bottom. The injection port of the circulation nozzle 12 is connected to the first portion P on the upper surface of the pulsator 15 belonging to the first region S1 in a no-load state (for example, (S2) on the inner circumferential surface of the drum belonging to the second area S2 from the first area (S1) of the second area (S2).

The jetting port of the direct water nozzle 13 is connected from the third portion P (S2) on the upper surface of the pulsator 15 belonging to the second region S2 to the first region S1 To the fourth portion (D (S1)) on the inner peripheral surface of the drum to which it belongs.

12 shows a circulation nozzle according to another embodiment of the present invention. 12, the circulation nozzle 12 'according to another embodiment of the present invention has the circulation nozzle 12 according to the above-described embodiment in that a part of the injection port 122h forms the waveform W, And the other configurations are the same. In particular, the waveform W may be formed at the lower end of the impact surface 124 constituting the water distributing port 122h.

Claims (10)

Water-filled outer tub;
An inner tub which receives the laundry and is rotated about a vertical axis in the outer tub;
A circulation nozzle for spraying water into the inner tank;
A circulation hose for guiding the water discharged from the outer tank to the circulation nozzle; And
A pump motor capable of rotating speed control; and a pump rotated by the pump motor and having an impeller for transferring water in the circulating hose to the circulating nozzle. The method according to claim 1,
A direct water supply hose for guiding water supplied from an external water source;
A direct water nozzle for injecting the water supplied through the direct water supply hose into the inner tank;
A cabinet in which an upper portion is opened and in which said outer tub is disposed; And
And a top cover coupled to an open upper portion of the cabinet and having an opening formed therein so that the bag can be inserted into the inner tank,
Wherein the circulation nozzle and the direct water nozzle are disposed on the top cover. 3. The method of claim 2,
Further comprising a drawer disposed on the top cover and receiving the detergent,
Wherein the circulation nozzle and the direct water nozzle are disposed on both sides of the drawer, respectively. The method of claim 3,
Wherein the circulation nozzle is arranged in the first region and the second region is defined as a first region, with one side defined as a first region and a second region defined as a first region with respect to a predetermined reference plane extending in the front- And the direct water nozzle is disposed in the second area to spray water into the first area. 5. The method of claim 4,
And a pulsator disposed at the bottom of the inner tank,
Wherein the inner tub includes a cylindrical drum extending upward from the bottom,
Wherein the injection port of the circulation nozzle
Wherein the inner tub is opened from the first portion on the upper surface of the pulsator belonging to the first region to the second portion on the inner circumferential surface of the drum belonging to the second region in a no-load state,
The jetting port of the direct-
Wherein the inner tub is opened in a no-load state to a third portion on an upper surface of the pulsator belonging to the second region, to a fourth portion on an inner peripheral surface of the drum belonging to the first region. The method according to claim 1,
A water supply hose for guiding water supplied from an external water source;
A dispenser for supplying water guided through the water supply hose into the inner tank together with detergent;
A water supply valve for interrupting the water supply hose;
An operation control module for controlling the water supply valve and the pump motor; And
Further comprising a bulk amount determination module for determining a bulk amount in the inner tank,
The operation control module includes:
And controls the rotational speed of the pump motor in accordance with the amount of laundry determined by the laundry amount determining module after supplying water into the inner tank through the water supply valve control. The method according to claim 6,
The operation control module includes:
And the rotational speed of the pump motor is increased as the volume determined by the bulking determination module is larger. 8. The method of claim 7,
And a washing motor for rotating the inner tub,
The operation control module includes:
And the washing motor continuously rotates in one direction while the pump motor is rotating. The method according to claim 1,
Wherein the cleaning motor is a BLDC motor. The method according to claim 1,
The circulation nozzle
A water supply pipe for guiding water supplied through the circulation hose;
And a diffuser for refracting water discharged from the water supply pipe in a downward direction and injecting the water into the inner tank,
The diffuser,
And a collision surface in which water discharged from an outlet of the water supply pipe collides and is bent downward.

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