KR20110040179A - Apparatus and method for treating laundry - Google Patents

Abstract

PURPOSE: A washing machine is provided to jetting washing water from the upper part of a washing drum. CONSTITUTION: A tub is installed within a cabinet. A drum is rotatively installed within the tub. Laundry is accepted to the drum. A gasket(140) is installed between the cabinet and the tub. A plurality of injection nozzles(170,180) are installed in the lower part of the gasket. A plurality of injection nozzles jets washing water to the inside of the drum from the upward direction. A pump(160) pumps the washing water to the injection nozzles.

Description

Laundry treatment equipment and laundry treatment method {Apparatus and method for treating laundry}

The present invention relates to a laundry treatment machine.

In general, laundry treatment equipment uses chemical reaction between water and detergent and physical action such as friction between water and laundry to separate contaminants on clothes, bedding, etc. (hereinafter referred to as 'laundry'). A washing machine, a dryer for dehydrating and drying wet laundry, and spraying steam to the laundry to prevent allergies due to the laundry, and a laundry to apply the physical and chemical effects to the laundry. Various devices are collectively called.

The laundry treatment apparatus circulates the wash water in processing the laundry. At this time, the wash water is circulated through the circulation pump. There was a limit to spraying the washing water in the circulation of the washing water.

It is an object of the present invention to provide a laundry treatment machine that wets laundry efficiently.

The laundry treatment machine of the present invention includes a cabinet, a tub provided in the cabinet, a drum rotatably provided in the tub to accommodate laundry, a gasket provided between the cabinet and the tub, and a lower portion of the gasket. It is provided with, a plurality of injection nozzles for spraying the washing water upwards toward the inside of the drum, and a pump for pumping the washing water to the plurality of injection nozzles.

In addition, the laundry treatment apparatus of the present invention, a cabinet, a tub provided in the cabinet, a drum in which the laundry is received and rotatably provided in the tub, a gasket provided between the cabinet and the tub, a plurality of It includes a plurality of injection nozzles provided in the gasket so that the washing water is sprayed toward the inside of the drum in the direction.

According to the laundry treatment machine of the present invention has one or more of the following effects.

First, the washing water can be evenly sprayed into the drum.

Second, the washing water may be sprayed in a plurality of directions toward the inside of the drum.

Third, the washing water may be sprayed upward toward the inside of the drum.

Fourth, the washing water can be sprayed with a strong impact toward the laundry.

Fifth, the washing and spraying the washing water to the laundry through the laundry can be improved washing and rinsing performance.

Sixth, the washing and rinsing performance can be improved by spraying the wash water to the laundry to cause the flexing.

Seventh, the injection nozzle is provided in the lower portion of the gasket increases the flow rate of the washing water is injected close to the pump.

Eighth, there is no laundry that is not in contact with the wash water during washing or rinsing can be washed performance.

Ninth, there is also an advantage that the washing variation is reduced when washing or rinsing a large amount of laundry by enhancing the flow of the laundry.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, the present invention will be described with reference to the drawings for describing a clothes treating apparatus according to embodiments of the present invention.

1 is a perspective view showing a laundry treatment machine according to an embodiment of the present invention. 2 is a side cross-sectional view of the laundry treatment machine shown in FIG. 1 taken along line A-A. Figure 3 illustrates a structure in which the washing water is sprayed in the laundry treatment machine according to an embodiment of the present invention. 4 is a cross-sectional view taken along the line B-B shown in FIG. 3.

1 to 4, a laundry treatment apparatus 100 according to an embodiment of the present invention includes a cabinet 110, a tub 121 disposed inside the cabinet and storing wash water supplied from the outside; A drum 122 disposed inside the tub, into which laundry is inserted, a driving unit 130 for supplying rotational force to the drum, a water supply valve 125 for supplying washing water supplied from an external water source, and washing water in the tub. It includes a drain hose 151 and a pump 160 to drain.

The cabinet 110 forms an exterior of the laundry treatment apparatus 100, and has a cabinet body 111 having a front surface and an upper surface opened, and a laundry access hole 119 formed to allow the laundry to enter and exit the front of the cabinet body. And a front cover 112 coupled to the front cover 112, a control panel 115 provided at an upper side of the front cover 112 to provide a user interface, and a top cover 116 provided at an upper side of the cabinet body.

The front cover 112 is rotatably provided with a door 113 for opening and closing the laundry access hole 119. The control panel 115 includes a display unit 117 for displaying various state information of the laundry processing apparatus 100, and an input unit 118 for inputting various control commands such as a washing course, an operation time and a reservation for each stroke, from a user. It is provided.

The laundry course includes a lingerie / wool course, a boiling course, a speed wash course, a functional clothing course, and a quiet course depending on the type and function of the laundry. The operation of the washing machine is largely divided into a washing stroke, a rinsing stroke, and a dehydrating stroke, and water, washing, rinsing, draining, dehydration or drying are performed in each stroke.

Detergent box 133 is a detergent such as laundry detergent, fabric softener or bleach is accommodated. Detergent box 133 is preferably provided to be pulled out on the front of the front cover (112). Detergent in the detergent box 133 is mixed with the wash water at the time of supplying the wash water flows into the tub 121.

The tub 121 is suspended from the top cover 116 by the spring 124 so as to damp vibration generated when the drum 122 rotates, and is supported by the damper 126. The drum 122 is rotated by the driving unit 130, and a lifter 135 for pumping laundry upon rotation is provided inside.

A gasket 140 is provided between the cabinet 110 and the tub 121. One side of the gasket 140 is coupled to the cabinet 110, and the other side is coupled along the circumference of the opened front surface of the tub 121. Thus, the wash water stored in the tub 121 is prevented from leaking between the tub and the cabinet 110. In addition, the gasket 140 is formed to have a wrinkle along the circumference to buffer the vibration of the tub 121.

Referring to FIG. 4, the gasket 140 is bent so that a tub connection part 141 fastened to the tub 121, a cabinet connection part 144 fastened to the cabinet 110, and a corrugation between the tub connection part and the cabinet connection part are pleated. And a pleating portion 143 that cushions vibration and a groove portion 142 formed by the pleating portion.

The connector 162 may be fastened through the groove 142, and the injection hole 165 may be formed such that a part of the washing water flowing toward the injection nozzles 170 and 180 through the connector is injected toward the groove. The washing water sprayed through the injection hole 165 flows downward along the groove 142 to wash away the residual detergent or the contaminants separated from the laundry. Therefore, it is preferable that a drainage hole (not shown) is formed at the lower portion of the gasket 140 so that the washing water washed down along the groove 142 can be drained.

The gasket 140 may be integrally formed of one material, but the tub fastening portion 141 is formed of a hard material to secure the fastening strength and sufficient rigidity with the tub 140, and the cabinet (from the tub 121) may be formed. Cabinet fastening portion 144 may be formed of a material having elasticity to mitigate the vibration transmitted to 110.

In the gasket 140, laundry is separated by the rotation of the drum 122 and is sandwiched between the gasket and the cabinet 110, or when the door 113 is opened after washing is completed, the gasket 140 is prevented from spilling. Protruding portion 145 protruding from the inner circumference of the) may be formed.

On the other hand, the gasket 140 is provided with a first injection nozzle 170 and a second injection nozzle 180 to circulate the washing water discharged from the tub 121 to be injected into the drum 122. In the present exemplary embodiment, washing water is sprayed by two spray nozzles 170 and 180, but the scope of the present invention is not limited thereto, and the washing water is sprayed into the drum 122 in a plurality of directions. It is specified that the above injection nozzles can be provided.

In addition, in the present embodiment, the two injection nozzles 170 and 180 are described as being provided in the gasket 140, but may be provided at various positions that can be injected into the drum 122. That is, the spray nozzles 170 and 180 may be provided in front of the drum 122 to spray washing water into the drum 122. Preferably, the spray nozzles 170 and 180 are provided below the drum 122 to spray the washing water upwards.

After the wash water in the tub 121 is pumped by the pump 160, the washing water is circulated by being sprayed into the drum 122 by the first spray nozzle 170 and the second spray nozzle 180. In this embodiment, the drainage and circulation of the washing water is implemented by one pump 160, but not limited to this, it is also possible that the pump for drainage and the pump for circulation are provided separately.

The wash water pumped by the pump 160 is distributed by the distributor 161 and the first injection nozzle 170 and the second injection nozzle 161 through the first injection passage 162 and the second injection passage 163, respectively. 180). In this case, the pump 160 may pump the washing water so that the washing water may be sprayed by the first injection nozzle 170 and the second injection nozzle 180 at the same time. Therefore, the spray is made simultaneously in both directions toward the laundry to effectively process the laundry, there is an effect that can process the laundry with a constant performance irrespective of the rotation direction of the drum (122).

Heavy and weighted waiters 155 and 156 are provided above and / or below the tub 121 to maintain the stability of the tub even when the drum vibrates due to inertia caused by the weight of the waiter. The waiters 155 and 156 may include an upper waiter 155 provided above the tub and a lower waiter 156 provided below.

The spray nozzles 170 and 180 may be connected to the gasket 140 by the connector 164, respectively. 4 illustrates a connector 164 connecting the first injection nozzle 170 to the gasket 140, but the second injection nozzle 180 may also be connected to the gasket in the same structure. The connector 164 is provided to pass through the gasket 140 to connect the first injection passage 162 and the first injection nozzle 170.

In this embodiment, the first injection nozzle 170 and the second injection nozzle 180 are disposed on both sides with the lower waiter 156 therebetween. The reason why the arrangement is as described above is to prevent each connector 164 connected to the first injection nozzle 170 and the second injection nozzle 180 from interfering with the lower waiter 156. Unlike the example, when the connector 164 is not provided in the gasket 140, the arrangement structure of the first jet nozzle 170 and the second jet nozzle 180 is not limited thereto.

On the other hand, the first injection nozzle 170 and the second injection nozzle 180, the vertical symmetry such that the washing water is evenly sprayed into the drum 122, the symmetry with respect to the vertical symmetry line passing through the center of the gasket 140, The left and right sides of the line may be provided respectively.

Due to the structure as described above, the first injection nozzle 170 is provided in the lower left of the gasket 140 to spray the washing water to the area from the upper left to the lower right toward the inside of the drum 122, and the second The injection nozzle 180 is provided at the lower right side of the gasket 140 to inject the washing water into an area from the upper right side of the drum to the lower left side.

5A and 5B illustrate an embodiment of the spray nozzle applied to the laundry treatment machine of the present invention. Referring to FIGS. 5A and 5B, the spray nozzle 170 may include an inlet 171 through which washing water is introduced, a first surface 172 formed such that the washing direction of the washing water is directed toward the inside of the drum 122. And second and third surfaces 173 and 174 extending from both sides of the first surface to define the spray width of the wash water.

The first surface pumped by the pump 160 and introduced through the inlet 171 is formed to face the outlet end 171h side of the inlet and extends inclined toward the inside of the drum 122. 172 is guided and sprayed. At this time, since the washing water is guided along the first surface 172 by the pumping pressure of the pump 160, the sprayed washing water is sprayed while being unfolded so that the portion contacting the drum is approximately linear. Thus, even if the same amount of washing water is sprayed, it is possible to spray a large area, as in the embodiment of the present invention, respectively, the first spray nozzle 170 and the second spray nozzle 180 on both sides of the gasket 140 If it is provided, effective spraying into a wider area is possible.

On the other hand, the first surface 172 is formed so as to gradually widen toward the exit end (spanning), the second surface 173 and the third surface 174 respectively extend from both sides of the first surface. Accordingly, the second surface 173 and the third surface 174 define the spray width of the sprayed washing water, the second surface forms the lower boundary of the sprayed washing water, and the third surface is the sprayed washing The upper boundary of the number is formed. At this time, the second surface 173 and the third surface 174, the injection zone between the upper boundary (st2) and the lower boundary (st3) of the sprayed washing water as shown by the point P in FIG. It is formed to intersect the rotation axis of 122).

Meanwhile, a plurality of ribs 175 may be formed on the first surface 172 along the flow direction of the wash water. The wash water guided along the first surface 172 is changed in thickness by the plurality of ribs 175. Therefore, the water streams injected between the adjacent ribs 175 form a thick main jet stream, and a thin water film is formed between the main jet streams.

As the washing water is sprayed in the above-described form, it is possible to treat the contaminants accumulated in the laundry by the main jetting flow with a strong impact, the washing of the laundry is made to improve the washing power, the spray area is still by the water film Sufficiently secured.

Figure 6 shows another embodiment of the spray nozzle applied to the laundry treatment machine of the present invention. 7 is an enlarged partial view of a portion C in FIG. 6. FIG. 8 is an enlarged cross-sectional view of part E cut along line D-D in FIG. 7.

 6 to 8, in this embodiment, the injection nozzles 270 and 280 are different from the above-described embodiment in that they are integrally formed with the gasket 240. Injection nozzles 270 and 280 are formed to protrude from the gasket 140. The gasket 240 may be formed with a gasket flow path 271 for guiding the washing water to the injection nozzles 270 and 280, and the gasket flow path 271 and the injection flow paths 162 and 156 may be connected by the connector 164. .

On the other hand, in the present embodiment, a groove 275 is formed on the first surface 275 of the injection nozzle 270, unlike in the above-described embodiment. However, the present embodiment and the above-described embodiment are not distinguished by such structural differences, and a rib 175 is formed in the injection nozzle 270 of the present embodiment, or a groove (in the injection nozzle 170 of the above-described embodiment) is provided. It is also possible to form 275). That is, the structure of the ribs 175 or grooves 275 is independent of whether the spray nozzle is formed integrally with the gasket and specifies that any structure can be applied to each embodiment.

9 and 10 are conceptual views illustrating the shape of the washing water sprayed into the drum by the spray nozzle of the laundry treatment machine according to an embodiment of the present invention. FIG. 11 is a cross-sectional view of the washing water sprayed to explain the spraying area a of the washing water sprayed by the first spray nozzle and the spraying area b of the washing water sprayed by the second spray nozzle. will be.

The first injection nozzle 170 and the second injection nozzle 180 are provided at both sides of the lower portion of the gasket in a range not exceeding half the height of the gasket 140. The first spray nozzle 170 sprays the washing water upward from the lower left side of the gasket 140 toward the inside of the drum 122, and the second spray nozzle 180 moves the inside of the drum at the lower right of the gasket. Spray the wash water upwards. As the drum 122 rotates, the laundry 10 which is lifted up and dropped by the lifter 135 passes through the spraying area formed by the first spray nozzle 170 and the second spray nozzle 180 and is processed. Will be done. The spray nozzle according to the present invention sprays the washing water upwards toward the falling laundry, thereby treating the laundry with a strong impact and allowing the laundry to be stretched, thereby improving laundry treatment performance. Therefore, for this effect, it is necessary to find a washing motion in which laundry is lifted and then dropped again along the inside of the drum, which will be described in more detail later with reference to FIGS. 13 and 14.

Meanwhile, the washing water sprayed by the spray nozzle 170 is disposed between the central jet stream st1 that meets the rotation axis C of the drum 122 and the upper boundary jet stream st2 forming an upper boundary of the jetted wash water. The injection is made such that the upper injection angle θ1, which is an angle, is greater than the lower injection angle θ2, which is an angle between the central jet stream st1 and the lower boundary jet stream st3 forming the lower boundary of the jetted washing water. Therefore, the injection may be more concentrated to the upper region in the drum 122.

Due to the positional characteristics of the first injection nozzle 170 and the second injection nozzle 180 provided in the lower portion of the gasket 140, the washing water sprayed by the first injection nozzle is in the upper left of the drum 122 The washing water sprayed in an oblique line to the area extending to the lower right, and the washing water sprayed by the second spray nozzle is sprayed forming an oblique line (l) from the lower right of the drum to the upper left. Looking at this on the predetermined projection surface T orthogonal to the axis of rotation of the drum 122, the injection surface S and the projection surface T meet and form a line l.

Again, referring to FIG. 11, the shape of the sprayed washing water is projected on the projection surface T. The washing water sprayed by the first injection nozzle 170 is divided from the second quadrant II to the fourth quadrant IV on the projection surface. ), And the washing water sprayed by the second injection nozzle 180 forms an oblique line from the first quadrant I to the third quadrant on the projection surface T. As a result, the wash water sprayed by the first spray nozzle 170 and the second spray nozzle 180 sprays the wash water toward all of the first, second, third and fourth quadrants I, II, III and IV. Done. Looking at this again from the perspective of the drum 122, it means that the washing water can be evenly sprayed into the drum 122 by the first injection nozzle 170 and the second injection nozzle 180.

12 is a flowchart illustrating a laundry treatment method according to an embodiment of the present invention.

Water is made during the washing stroke or the rinsing stroke (S210). The operation of the washing machine is largely divided into a washing stroke, a rinsing stroke, and a dehydrating stroke, and water, washing, rinsing, draining, dehydration or drying are performed in each stroke. The washing stroke is a stroke that removes contamination from the laundry by rotating the drum 122 after soaking the washing water mixed with the laundry detergent in the laundry. The rinsing stroke is a stroke for removing the residual laundry detergent of the laundry by rotating the drum 122 after wetting the laundry water mixed with the fabric softener to the laundry.

The water supply is to supply the washing water into the tub 121 from an external water source. When the water supply valve 125 is opened during water supply, washing water is introduced into the tub 122 through the detergent box 133 from an external water source. Washing water in the detergent box 133 may be mixed with a laundry detergent or fabric softener.

The water supply runs until the wash water reaches the target level, and the target water level is determined by the amount of laundry measured before the water supply (hereinafter referred to as 'capacity') or the selected course. When water is supplied, a washing cloth in which the drum 122 rotates may be performed so that the laundry water mixed with the laundry detergent is evenly soaked in the laundry.

When the water supply is completed, the drum 122 rotates (S220). The drum 122 containing the laundry is rotated to perform washing or rinsing.

Washing or rinsing is rotating the drum 122 containing the laundry moistened with the wash water mixed with the laundry detergent or fabric softener. When the driving unit 130 rotates the drum 122, the laundry in the drum is lifted up by the lifter 135 and then dropped, and the contamination of the laundry and residual detergent are removed by friction between the laundry and the drop of the laundry.

In washing, the drum 122 may rotate at various speeds or directions. A detailed description thereof will be described later with reference to FIG. 13.

Washing water is pumped and sprayed toward the drum 122 (S230). When the drum 122 rotates, the washing water in the tub 121 is pumped by the pump 160, and then sprayed into the drum 122 by the first injection nozzle 170 and the second injection nozzle 180. The wash water pumped by the pump 160 is distributed by the distributor 161 and the first injection nozzle 170 and the second injection nozzle (respectively) through the first injection passage 162 and the second injection passage 163 ( 180). In this case, the pump 160 may pump the washing water so that the washing water may be sprayed by the first injection nozzle 170 and the second injection nozzle 180 at the same time.

The first spray nozzle 170 is provided at the lower left side of the gasket 140 to spray washing water toward an area from the upper left to the lower right toward the inside of the drum 122, and the second spray nozzle 180 is a gasket. It is provided in the lower right of the 140 and sprays the washing water to the area approximately from the upper right of the drum to the lower left. It is preferable that the first spray nozzle 170 and the second spray nozzle 180 spray washing water upwardly toward the falling laundry.

13 is a view showing a variety of drum motion in the laundry treatment method according to an embodiment of the present invention.

FIG. 13A illustrates a motion in which the drive unit 130 rotates the drum 122 in a predetermined direction so that laundry is lifted at the lowest position of the drum and falls about half of the drum height (hereinafter referred to as “tumbling motion”). Is called). In the tumbling motion, the drum 122 rotates continuously at about 45 rpm, and the laundry in the drum 122 is washed by the impact force and the friction force.

FIG. 13B illustrates a motion in which the driving unit 130 rotates the drum 122 in a predetermined direction so that laundry is lifted at the lowest position of the drum and falls at a height not exceeding half the height of the drum (hereinafter, referred to as “rolling”). Motion). In the rolling motion, the drum 122 continuously rotates at about 40 rpm or less, and the laundry in the drum 122 falls down and is washed by the stretching force and the friction force.

FIG. 13C illustrates a motion in which the driving unit 130 rotates the drum 122 in different directions so that the laundry is lifted at the lowest position of the drum and falls about half of the drum height (hereinafter, referred to as “swing motion”). "". In swing motion, the drum 122 rotates in different directions at approximately 40 rpm or less. The laundry in the drum 122 falls by rolling and is washed by the stretching force and the friction force.

FIG. 13D illustrates a motion in which the driving unit 130 rotates the drum 122 in a predetermined direction so that the laundry is lifted at the lowest position of the drum and falls near the top of the drum (hereinafter referred to as "step motion"). Is). In step motion, the drum 122 rotates above about 60 rpm to raise the laundry. After the laundry rises beyond half the drum height, the driving unit 130 brakes the drum 122 so that the laundry falls near the top of the drum. After the laundry drops, the drum 122 rotates in the same direction to raise the laundry. The laundry in the drum 122 is washed by the high impact force using the drop.

FIG. 13E illustrates a pressing motion in which the driving unit 130 changes the speed of the drum 122 at a rapid cycle so that laundry is collected and spread. In the pressing motion, the drum 122 changes at a rapid cycle at a speed of about 100 rmp at about 50 rpm so that the laundry adheres to the drum and then falls off. The flow of the laundry is enhanced to reduce the washing variation and to contact the washing water evenly. In addition, when the laundry adheres to the drum, the washing water soaked in the laundry is discharged like a squeeze, and when washing, the laundry is discharged like a squeeze, and when rinsing, the residual detergent of the laundry is discharged. In addition, by repeating the laundry is attached to the inside of the drum and falling, the user can visually check the flow of the laundry.

When each drum motion described above is performed, it is preferable that the washing water is pumped by the pump 160 and then sprayed into the drum 122 by the first injection nozzle 170 and the second injection nozzle 180. It is preferable that the first spray nozzle 170 and the second spray nozzle 180 spray washing water upwardly toward the falling laundry.

14 is a view showing a pressing motion in the laundry treatment method according to an embodiment of the present invention.

In the laundry method according to an embodiment of the present invention, the pressing motion accelerates the drum 122 at a high speed during a washing stroke or a rinsing stroke so that the laundry 10 in the drum is attached to the inside of the drum and then rotates to reduce the drum. It is a motion that repeats falling inside the drum in a fast cycle.

In FIG. 14A, when the drum 122 rotates at a high speed, the laundry 10 in the drum is attached to the drum and rotates. When the drum 122 rotates about 100 RPM, the laundry 10 is compressed and rotated inside the drum by centrifugal force. The laundry 10 is preferably rotated for an appropriate speed and time to evenly spread and rotate inside the drum.

At this time, it is preferable that the washing water is pumped by the pump 160 and then sprayed into the drum 122 by the first injection nozzle 170 and the second injection nozzle 180. It is preferable that the first spray nozzle 170 and the second spray nozzle 180 spray washing water upwardly toward the falling laundry.

In FIG. 14B, when the drum 122 is decelerated, the laundry 10 falls inside the drum. When the laundry 10 is decelerated at a speed such that the centrifugal force does not act, the laundry falls by gravity and the drum rotates so that the laundry flows and is evenly mixed.

In this case, it is preferable that the washing water is pumped by the pump 160 and then sprayed into the drum 122 by the first injection nozzle 170 and the second injection nozzle 180.

In FIG. 14C, when the drum 122 is completely decelerated, the laundry 10 is collected at the center of the drum. When the drum 122 rotates about 50 RPM, the laundry 10 rolls to the center of the drum.

Afterwards, the drum 122 is accelerated again so that the laundry 10 gathered as shown in FIG. 14 (a) is spread evenly inside the drum and rotated.

Each step described above is preferably repeated at a fast cycle. It is preferable that the period of acceleration and deceleration is repeated from 1 second to 4 seconds. The time to accelerate from 50 rpm to 100 rpm is 2 seconds or less, preferably approximately 1.2 seconds. The time to decelerate from 100 rpm to 50 rpm is 1 second or less, preferably approximately 0.5 seconds.

15 is a flowchart illustrating a laundry treatment method according to another embodiment of the present invention.

The amount of laundry for laundry contained in the drum 122 is sensed (S410). When the user selects the washing course through the input unit 118 and inputs the washing start button, the washing stroke is started to sense the amount of water. The washing course selected by the user may be a washing course in which a compression motion is performed. The user can select a particular washing course in which a compacting motion is performed when trying to wash a bulky laundry.

Dose detection can be implemented in a variety of ways or apparatus. In an embodiment of the present invention, the drive unit 130 rotates the drum 122 at a constant speed for a predetermined time, and then measures the deceleration time to detect a quantity. The longer the deceleration time of the drum 122, the higher the level of the quantity of the gun.

Initial water supply is performed (S420). When the water supply valve 125 is opened, the washing water is introduced into the tub 122 through the detergent box 133 from an external water source. Washing water in the detergent box 133 may be mixed with a laundry detergent or fabric softener.

While the water supply is completed or while watering is carried out (S430). The lather is a process of flowing laundry so that the laundry accommodated in the drum 122 is soaked in the wash water supplied into the tub 121. In general, the cladding is performed by a tumbling motion, but the cladding may be performed by the above-described compression motion. When the foaming is performed, the washing water may be pumped by the pump 160 and then sprayed into the drum 122 by the first spray nozzle 170 and the second spray nozzle 180.

It is determined whether the quantity is more than the set range (S440). It is determined whether the detected quantity is above a certain level to determine the drum motion during the washing stroke.

If the amount is more than the set range, the general motion is performed (S450), the compression motion is performed (S460). General motion refers to rolling motion, swing motion and step motion in addition to the tumbling motion of FIG. 13.

If you have a large amount of water, repeating the normal motion will cause the laundry to agglomerate and prevent the laundry from flowing. Therefore, the general motion is performed for a period of time and the compression motion is performed. In addition, when the amount is small, the laundry is stuck inside the drum even at a low rpm, so that the compression motion is not performed well.

The pressing motion changes the speed of the drum 122 at a rapid cycle to collect and spread the laundry so that the laundry flows. The flow of the laundry is enhanced to reduce the washing variation and to contact the washing water evenly. In addition, when the laundry adheres to the drum, the washing water soaked in the laundry is discharged like a squeeze, so that the contamination of the cloth is squeezed out during washing, and the residual detergent of the cloth is squeezed out during washing. In addition, by repeating the laundry is attached to the inside of the drum and falling, the user can visually check the flow of the laundry.

Depending on the quantity and the washing course, the compression motion during the washing stroke is preferably performed for about 10 minutes.

In the compression motion, after the washing water is pumped by the pump 160, it is preferable that the washing water is sprayed into the drum 122 by the first spray nozzle 170 and the second spray nozzle 180. It is preferable that the first spray nozzle 170 and the second spray nozzle 180 spray washing water upwardly toward the falling laundry.

It is determined whether the normal motion and the compression motion are performed n times (S470). The general motion and the pressing motion are repeated n times so that the laundry flows to eliminate the washing deviation. The number of repetitions n depends on the course and the quantity chosen.

When the normal motion and the compression motion is performed n times, simple dehydration is performed (S490). Simple dehydration is a process of discharging the wash water used for washing to the outside.

If the quantity is within the setting range, the general motion is performed (S480), and simple dehydration is performed (S490).

Until the simple dehydration step (S490) described above is a general washing stroke, and performs the water supply step (S420) again to start the rinsing stroke. The wash water supplied at this time is water that is not mixed with a detergent and may be mixed with a fabric softener.

Depending on the volume and the washing course, the compression motion during the rinsing stroke is preferably performed for about 3 minutes.

In the rinsing stroke, it is preferable that the above-described steps are repeated, but the execution time of each step or the number of n repetitions can be changed.

Although the above has been illustrated and described with respect to preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, but in the art to which the invention pertains without departing from the spirit of the invention as claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

1 is a perspective view showing a laundry treatment machine according to an embodiment of the present invention.

2 is a side cross-sectional view of the laundry treatment machine shown in FIG. 1 taken along line A-A.

Figure 3 illustrates a structure in which the washing water is sprayed in the laundry treatment machine according to an embodiment of the present invention. 4 is a cross-sectional view taken along the line B-B shown in FIG. 3.

5A and 5B illustrate an embodiment of the spray nozzle applied to the laundry treatment machine of the present invention.

Figure 6 shows another embodiment of the spray nozzle applied to the laundry treatment machine of the present invention.

7 is an enlarged partial view of a portion C in FIG. 6.

FIG. 8 is an enlarged cross-sectional view of part E cut along line D-D in FIG. 7.

9 and 10 are conceptual views illustrating the shape of the washing water sprayed into the drum by the spray nozzle of the laundry treatment machine according to an embodiment of the present invention.

FIG. 11 is a cross-sectional view of the washing water sprayed to explain the spraying area a of the washing water sprayed by the first spray nozzle and the spraying area b of the washing water sprayed by the second spray nozzle. will be.

12 is a flowchart illustrating a laundry treatment method according to an embodiment of the present invention.

13 is a view showing a variety of drum motion in the laundry treatment method according to an embodiment of the present invention.

14 is a view showing a pressing motion in the laundry treatment method according to an embodiment of the present invention.

15 is a flowchart illustrating a laundry treatment method according to another embodiment of the present invention.

Claims (22)

cabinet; Tub provided in the cabinet; A drum rotatably provided in the tub to accommodate laundry; A gasket provided between the cabinet and the tub; A plurality of spray nozzles provided at a lower portion of the gasket to spray washing water upwards toward the inside of the drum; And Laundry processing apparatus comprising a pump for pumping the washing water to the plurality of injection nozzles. The method of claim 1, The injection nozzle, Laundry treatment apparatus including a first surface formed so that the spraying direction of the washing water toward the inside of the drum. The method of claim 2, And a spraying surface of the washing water formed by the first surface to form a diagonal line on a predetermined projection surface orthogonal to the rotation axis of the drum. The method of claim 1, The injection nozzle, So that the injection zone between the lower boundary and the upper boundary of the washing water sprayed intersects the axis of rotation of the drum, A second surface forming the lower boundary; And Laundry processing apparatus comprising a third surface forming the upper boundary. The method of claim 4, wherein Washing water sprayed by the spray nozzle, An upper injection angle, which is an angle between a central jet flow that meets the rotating shaft of the drum and an upper boundary jet flow that forms an upper boundary of the jetted wash water, is between the central jet flow and a lower boundary jet flow that forms a lower boundary of the jetted wash water. Laundry treatment equipment larger than the lower spray angle. The method of claim 1, Further comprising a waiter provided in the gasket, The plurality of injection nozzles, Laundry treatment device comprising a first injection nozzle and a second injection nozzle disposed between the waiter. The method of claim 1, The injection nozzle, Laundry treatment device comprising a first injection nozzle and a second injection nozzle provided to be symmetrical with respect to the vertical symmetry line of the gasket. The method of claim 1, The laundry treatment machine further comprises a connector connecting the spray nozzle and the gasket. The method of claim 8, The connector is a laundry treatment device for guiding the pumped wash water from the pump to the injection nozzle. The method of claim 1, The pump, Laundry treatment equipment to puncture the wash water in the tub. The method of claim 1, The pump, Laundry treatment equipment for pumping the washing water at the same time with the plurality of injection nozzles. The method of claim 1, And a distributor for dispensing the washing water pumped by the pump to the respective injection nozzles. The method of claim 1, The pump, Washing and pumping the washing water when the drum is accelerated and decelerated to repeatedly attach and drop the laundry inside the drum. The method of claim 1, The pump, The laundry treatment device for pumping the wash water when the drum rotates to repeatedly drop the laundry in the drum. The method of claim 1, The spray nozzle is a laundry treatment device formed integrally with the gasket. cabinet; Tub provided in the cabinet; A drum in which laundry is received and rotatably provided in the tub; A gasket provided between the cabinet and the tub; And Washing machine comprising a plurality of spray nozzles provided in the gasket to spray the washing water toward the inside of the drum in a plurality of directions. The method of claim 16, The plurality of injection nozzles, A first spray nozzle for spraying washing water diagonally from a second quadrant to a fourth quadrant on a predetermined projection surface orthogonal to the rotation axis of the drum; And And a second spray nozzle for spraying washing water diagonally from the first quadrant to the third quadrant. In a washing stroke or a rinse stroke, A water supply step of supplying washing water into the tub; A drum rotating step in which laundry is accommodated and a drum provided in the tub rotates; And And washing water spraying the washing water in the tub when the drum rotates to spray the washing water toward the inside of the drum in a plurality of directions of the lower portion of the front of the drum. The method of claim 18, The drum rotating step is a laundry treatment method for rotating the drum in a predetermined direction to repeatedly drop the laundry. The method of claim 18, The drum rotating step is to accelerate and decelerate the drum to attach the laundry inside the drum and drop the laundry repeatedly. The method of claim 18, The drum rotating step, A quantity calculation step of calculating a quantity of the laundry in the drum; And And compressing the drum by decelerating and decelerating the laundry by attaching and dropping the laundry inside the drum when the quantity is greater than or equal to the reference quantity. The method of claim 18, In the washing water spraying step, the washing water is sprayed in a diagonal line from the second quadrant to the fourth quadrant on a predetermined projection surface orthogonal to the rotation axis of the drum, and the washing water is inclined diagonally from the first quadrant to the third quadrant. How to spray laundry.

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