KR100363592B1 - Washing machine - Google Patents

Abstract

The present invention relates to a washing machine, the purpose of which is to locally drill the dewatering and distribution holes in the upper and lower parts of the dehydration tank to reduce the water and detergent usage.

In the washing machine according to the present invention, a dewatering tank 30 is rotatably installed in the water tank 20, and an impeller 344 pumping into the dewatering tank 30 by sucking the fresh water washed in the water tank 20 is pulsed. It is integrally formed on the lower surface of the eater 34, the dehydration hole 311 along the upper end portion of the dehydration tank 30, the distribution hole 312 is partially perforated along the lower portion thereof.

Therefore, even if a small amount of washing water is supplied to the dehydration tank 30 in which the actual laundry is contained during washing and rinsing administration, the water level of the dehydration tank 30 is sufficient for washing and rinsing by the suction pumping force of the impeller 344. Maintained at the water level, washing and rinsing are performed smoothly. As a result, the water consumption required for washing and rinsing administration is greatly reduced, and the power consumption is reduced due to the reduction of water supply time, and the amount of detergent is reduced together with water, thereby reducing the water pollution caused by domestic wastewater. have.

Description

Washing machine

The present invention relates to a washing machine, and more particularly, to a dehydration tank of a washing machine in which laundry is contained and washing, rinsing, and dehydration administration are performed.

In general, a washing machine is pre-programmed with washing, rinsing, drainage, and dehydration strokes in the microcomputer of the control unit, and is configured to allow the user to selectively control the washing machine. do. Figure 1 shows the internal structure of such a conventional washing machine.

Referring to FIG. 1, a conventional washing machine includes a water tank 2 for dewatering a certain amount of washing water required for washing in a housing 1 forming an exterior, and is rotatably mounted in the water tank 2 and dewatered on a wall. The cylindrical dewatering tank 3 with which (3a) was perforated, and the pulsator 4 provided in the bottom of this dewatering tank 3 so that forward and reverse rotation is possible are provided.

The water tank 2 is installed to hang inside the housing 1 through the suspension device 5 so as to alleviate the vibration generated when the washing machine is driven. The lower portion of the outer tank 2 is equipped with a drive unit 6 for driving the dehydration tank 3 and the pulsator 4, which is driven by a motor 6a and a belt 6d for generating rotational force. And a clutch 6b for receiving the rotational force of the motor 6a and driving the pulsator 4 and the dehydration tank 3 through the rotation shaft 6c.

That is, the power is transmitted to the pulsator 4 only by the clutch 6b during washing and rinsing stroke, and the power is transmitted such that the pulsator 4 and the dehydrating tank 3 rotate at the same time during the dehydration stroke. Reference numeral 7 is a drain hose for discharging the washing water to the outside, it is provided to extend to the outside of the housing (1).

The dehydration tank 3 consists of a cylindrical shape in which the dehydration hole 3a was uniformly perforated over the whole wall surface. And the pulsator (4) is a plurality of wings are formed radially and is installed in the reverse bottom rotatable to the inner bottom of the dehydration tank (3), thereby forming a washing water flow during washing and rinsing administration.

The conventional washing machine configured as described above performs washing, draining, and dehydration operations according to a command of a preprogrammed control unit (not shown). That is, after the laundry is put into the dehydration tank 3 and the user operates the washing machine through a control unit (not shown), the washing water and the detergent are supplied into the dehydration tank 3. At this time, the wash water supplied into the dehydration tank (3) is stored in the fresh water tank (2) while leaving the plurality of dehydration holes (3a).

Subsequently, when an appropriate amount of washing water is stored in the water tank 2, power is applied to the motor 6a to generate power, and the pulsator 4 is rotated forward and backward by receiving the power thereof, thereby washing the water in the dewatering tank 3. Formation washing and rinsing stroke are performed.

After this stroke is completed, the fresh water washed in the water tank 2 is discharged to the outside of the housing 1 through the drain hose 7. And the dehydration tank 3 and the pulsator 4 are rotated at high speed in one direction, so that the dehydration stroke is performed.

However, in the conventional washing machine, although all washing and rinsing operations are performed only in the dehydration tank 3 in which the laundry is contained, the washing and rinsing administration with the washing water supplied to the space between the water tank 2 and the dehydration tank 3 is carried out. By this, the amount of water used is increased.

That is, in the case of the conventional washing machine, since a plurality of dehydration holes (3a) are perforated throughout the wall surface of the dehydration tank (3), the washing water is dewatering tank (3) and the water tank (2) through the dehydration holes (3a) By freely entering and leaving the inside, washing and rinsing strokes are performed while maintaining the same level of water in the dehydrating tank 3 and the tank 2. Accordingly, the dehydrating tank 3 is carried out to the tank 2 in which the actual washing is not performed. By washing fresh water at the same height as that, the amount of water used is increased, as well as the amount of detergent supplied with the water. In addition, there is a problem that water pollution, which has been recently discussed, is aggravated by such a large amount of washing water discharge.

The present invention is to solve this problem, an object of the present invention is to locally drill a dehydration hole in the cylindrical dehydration tank to supply a relatively small amount of water and to maximize the amount of water in the dehydration tank to the tank during washing and rinsing administration By reducing, the water level in the dewatering tank is kept high enough and the water level in the water tank is kept as low as possible to provide a washing machine that can reduce the amount of wash water and detergent used.

1 is a cross-sectional view showing the overall structure of a conventional washing machine.

2 is a cross-sectional view showing the overall structure of a fully automatic washing machine according to the present invention.

3 is a perspective view of a dehydration tank according to the present invention.

Figure 4 shows the water supply state before the washing stroke of the washing machine according to the present invention.

Figure 5 shows the operating state during the laundry administration of the washing machine according to the present invention.

Figure 6 shows the operating state during the dehydration administration of the washing machine according to the present invention.

* Description of the symbols for the main parts of the drawings *

30. Dehydration tank 31. Cylindrical body 311. Upper dehydration guide

312. Dehydration 313. No study 314. Lower dehydration guide

315..Distributor 34.Pulsator 344.Impeller

35..Rise guide pipe 36..Shaft flange 361..Drainage hall

The present invention for achieving the above object; and a water tank that is usually installed in the housing, rotatably installed in the tank and a tubular dewatering tank in which a plurality of holes are perforated on the wall, and is provided to be able to reverse and rotate in the dewatering tank It includes a pulsator equipped with an impeller to pump the water to the dehydration tank side, and the through hole is relatively less than the amount of water pumped into the dehydration tank by the impeller during the washing stroke, so that the amount of water that goes out into the tank through the through hole is relatively small. It is characterized in that the perforated to generate a water level difference between.

In addition, the through hole is characterized in that mainly perforated to the lower end and the upper end of the dehydration tank.

In addition, the through hole guides the dehydration hole perforated along the upper wall of the dehydration tank to discharge the water from the laundry during the dehydration stroke, and guides the discharge of water during the dehydration stroke, and the water is distributed between the water tank and the dehydration tank during the washing stroke. It is provided with a perforated distribution hole along the lower end of the wall, the central wall portion of the dehydration tank is characterized in that it consists of a non-perforated portion to suppress the water in the dehydration tank to escape to the water tank during the washing administration.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. 2 and 3 show the overall internal structure and the dehydration tank of the washing machine according to the present invention, Figures 4 to 6 shows the operating state of the washing machine according to the present invention.

As shown in FIG. 2, the washing machine according to the present invention includes a water tank 20 in which a suspension is installed in the housing 10 constituting the outer body, and a dehydration tank 30 in which a pulsator 34 forming laundry flows is built. ) And a driving unit 40 for driving the same, a drain hose 50 provided below the water tank 20 for discharging the wash water to the outside of the housing 10, and selectively opening and closing the drain hose 50. Drain valve 51 is included.

The housing 10 is made of a rectangular cylinder whose top is opened through plastic injection molding, and an upper cover 11 having a lid 12 and a detergent dissolving device 13 provided thereon for inputting and withdrawing laundry. The water tank 20 is composed of a plastic cylinder with an open top, and is suspended from the interior space of the housing 10 through four suspension devices 14 including a support rod 141 and a buffer spring. That is, one end of the support rod 141 is fixed to the upper end of the housing 10, the other end thereof is fixed to the lower side of the water tank 20, and is coupled to the inside of the case 142 with a built-in buffer spring, By the elastic restoring force, vibrations and shocks generated during operation of the washing machine are alleviated.

The drive part 40 is equipped with the motor 41 and the clutch 42, These are mounted in the lower surface of the buffer tank 20 supported. That is, the clutch 42 transmits power to the dehydration tank 30 and the pulsator 34, and is fixed to the lower center of the water tank 20, and the end of the rotation shaft 43 is dehydrated in the dehydration tank 30 and the pulsator. It is coupled with the center of the eater (34). Accordingly, only the pulsator 34 is rotated forward and backward during washing and rinsing stroke by the clutch 42, and the pulsator 34 and the dewatering tank 30 are simultaneously rotated in one direction during the dehydration stroke. The motor 41 generates power and transmits the power to the clutch 42. To this end, the pulley 411 of the motor 41 and the pulley 421 of the clutch 42 are connected to each other via a belt 44. .

The dehydration tank 30 is installed to maintain a constant distance from the inner wall thereof so as to be rotatable inside the water tank 20, which has a cylindrical body 31 and a dish shape having a cylindrical shape so that the upper and lower portions thereof are open and have a diameter "D". It has a lower body (32). And the pulsator 34 is installed on the lower body 32 of the dehydration tank (30).

The pulsator 34 is combined with the rotating shaft 43 of the clutch 42 to form a washing water flow by forward and reverse rotation during the washing stroke, which is formed on a disc having a washing rod 343 and a radial washing wing 342 provided on an upper surface thereof. The body 341 and the lower part of this body 341 are provided with the impeller 344 which consists of many feathers. Accordingly, the washing water flow is formed during the rotation of the pulsator 34, and the washing water at the bottom of the dehydration tank 30 is left in the rotation radius direction by the pumping force of the impeller 344.

The lower body 32 of the dehydration tank 30 is coupled to the lower end of the cylindrical body 31 through the screw 33, the rotary shaft 43 of the clutch 42 is coupled to the center. In order to couple the rotary shaft 43, the shaft flange 36 is screwed to the lower surface of the lower body 32. The central portion of the shaft flange 36 is coupled to the rotation shaft 43 of the clutch 42 through which a plurality of drainage holes 361 are symmetrically formed with respect to the center thereof. At this time, since the drain hole 361 serves to communicate the inner bottom of the dehydration tank 30 and the water tank 20, the washing water in the dehydration tank 30 is drained at the time of drainage, and the impeller at the time of washing and rinsing. The washing water in the water tank 20 is introduced into the bottom of the dewatering tank 30 through the drainage hole 361 by the suction pumping force of 344.

And the cylindrical body 31 of the dehydration tank 30 is made of stainless metal, the balancer 37 is filled in the circumferential direction is filled with saline inside the top end thereof. The balancer 37 eliminates vibrations during washing and rinsing operations of the washing machine through a wave of brine, and maintains a balance of the dehydration tank 30 during the dehydration stroke. Inside the wall surface of the cylindrical body 31 is provided with an induction pipe 35 symmetrically provided to guide the washing water pushed up by the impeller 344 of the pulsator 34 to the upper side. The rising induction pipe 35 has a vertical flow path 351 formed therein, and the lower and upper ends thereof are respectively opened so that the washing water flows back into the inlet end 352 and the washing water introduced therefrom into the dehydration tank 30. Consisting of the outlet end 353 formed.

Referring to FIG. 3, the cylindrical body 31 of the dehydration tank 30 includes the upper dehydration guide part 311 having the dewatering hole 312 punctured therein, and the lower dehydration guide part 314 having the hole 315 punctured therein. It is defined as a non-study 313 made of a simple trade.

The upper dehydration guide portion 311 refers to the upper end of the wall surface of the cylindrical body 31 adjacent to the balancer 37, where the dehydration holes 312 are perforated in a row, so that the water induced in the upper side during the dehydration administration The water tank 313 passes through the water tank 20. The non-welding part 313 is made of a plain trade between the lower dehydration induction part 314 and the upper dehydration induction part 311, that is, the middle part of the cylindrical body 31. During the stroke, the water in the dehydration tank 30 is prevented from escaping to the water tank 20 side. The lower dehydration guide portion 314 refers to the lower end portion of the cylindrical body 31, and includes a plurality of distribution holes 315. ) Is perforated so that the dehydrated water is discharged to the water tank 20 side during the dehydration stroke, and the amount of water introduced into the dewatering tank 30 from the water tank 20 by the impeller 344 during washing and rinsing stroke. Small Water Dehydration Tank (30) Guide to get out of the tank (20). That is, the reason for configuring the separate lower dehydration induction part 314 by locally drilling the distribution holes 315 only at the lower end of the cylindrical body 31 is the dehydration tank 30 than the pumping amount of the impeller 344 during washing and rinsing stroke. In the tank 20 to maintain a relatively small amount of water flowing out to the side. To this end, when the diameter (D) of the cylindrical body (31) of the dehydration tank (30) is 500mm, the distribution hole 315 has a diameter of 4.0 ~ 4.4mm in the lower dehydration guide portion 314 of the cylindrical body (31) It is preferable to drill about 135 to 145 pieces.

Next, the operation of the washing machine according to the present invention configured as described above will be described with reference to FIGS. 4 to 6.

First, opening the washing machine lid 12 and putting the laundry into the dehydration tank 30, and then operating the washing machine through a control unit (not shown), according to the amount of laundry with an amount of detergent contained in the detergent dissolving device (13) Washing water is supplied to the dehydration tank (30). At this time, since the wash water partially escapes to the outside of the dehydration tank 30 through the drainage hole 361 and the distribution hole 312, the dehydration tank 30 and the water tank 20 in the state where the motor 41 is not driven. ) Is filled while the same level (see FIG. 4).

Subsequently, when the appropriate amount of washing water is supplied, power is applied to the motor 41 to generate power, and the clutch 42 rotates the pulsator 34 forward and backward through the rotation shaft 43. Accordingly, the washing water flow is generated by the washing blade 342 so that the laundry is continuously rubbed with the inner wall of the dehydration tank 30.

In addition, as shown in Figure 5, by the impeller 344 provided under the pulsator 34, a part of the washing water is left in the rotation radius direction, which is introduced into the inlet end 352 of the rising induction pipe 35 It is led upward through the vertical flow path 351. The washing water induced upwards falls back into the dehydration tank 30 through the outlet end 353 and collides with the laundry. That is, the direction of the arrow shown in FIG. 5 indicates the pumping direction of the washing water, and the washing water in the water tank 20 is pumped into the dewatering tank 30 through the drain hole 361 by the pumping force of the impeller 344. Then, it is continuously pushed toward the inlet end 351 side of the rising induction pipe 35 and discharged again like a waterfall through the outlet end 353 to improve the washing performance.

Accordingly, the water level difference of "h" is generated in the dehydration tank 30 and the water tank 20, and the water level of the dehydration tank 30 is maintained about 12 cm higher than the water tank 20. This phenomenon consists of a cylindrical body 31 of the dehydration tank 30 is composed of a lower dehydration guide portion 314 in which the flow hole 315 is drilled and a non-weld portion 313 made of a simple trade, and dewatered by the impeller 344. This is because the amount of water flowing into the tank 30 is greater than the amount of water flowing out of the dehydration tank 30 to the water tank 20 through the distribution hole 315. In addition, as soon as the rotation direction of the pulsator 34 changes, the pumping force of the impeller 344 is dissipated so that the washing water in the dehydration tank 30 is partially transferred to the water tank 20 through the drain hole 361 and the distribution hole 315. Although it exits, the flow rate of the dewatering tank 30 is "h" higher than that of the water tank 20 by reflowing through the drain hole 361 by the pumping force of the impeller 344 as soon as the pulsator 34 is rotated again. Stays high.

As a result, even if the washing and rinsing administration is performed in a state of supplying a small amount of washing water, the water level in the dehydration tank 30 is higher than the initial state, so that washing and rinsing are performed smoothly, so that the amount of washing water as well as detergent is used. Greatly reduced.

On the other hand, after the rinsing stroke is completed, the drain valve 51 is opened to operate the washing water in the dehydration tank 30 is discharged to the outside through the drain hole 361 and the drain hose 50, the power is applied during the dehydration stroke Simultaneously delivered to the dehydration tank 30 and the pulsator 34 and they are rotated at high speed in one direction, the laundry is dewatered. That is, as shown in Figure 6, due to the high-speed rotation of the dehydration tank 30, the water dewatered from the laundry located on the lower side into the water tank 20 through the distribution hole 315 formed in the lower dehydration guide portion 314 The water is discharged, and the water dewatered from the laundry located in the upper portion 313 and the upper side is discharged through the dehydration hole (312) formed in the upper dehydration guide portion 311 rises upward along the wall surface of the dehydration tank (30) by centrifugal force. . That is, most of the water is discharged to the outside through the distribution hole 315 when there is little laundry, the water is smoothly discharged through the distribution hole 315 and the dehydration hole 312 when there is a lot of laundry. .

Subsequently, the dewatered water through the dehydration hole 312 and the distribution hole 315 flows down to the bottom surface of the water tank 20, and is discharged to the outside of the housing 10 through the drain hose 50.

Therefore, even if the washing and rinsing stroke is performed in a state in which a small amount of washing water is supplied to the dehydrating tank 30, the water level in the dehydrating tank 30 is increased by the pumping force of the impeller 344, thereby washing and rinsing stroke. It runs smoothly.

Indeed, the inventors of the present application conducted an experiment using a washing machine having a diameter of 500 mm in the dehydration tank 30, and a level difference of about 12 cm was generated in the dehydration tank 30 and the water tank 20. That is, after drilling about 140 flow holes 315 having a diameter of 4.2 mm at the lower end of the dewatering tank 30 formed to have a diameter of 500 mm (D), it is installed in the water tank 20 to perform washing and rinsing stroke. As a result, it was found that the water level of the dehydration tank 30 is maintained about 12 cm higher than the water tank 20 so that washing and rinsing operations are performed smoothly. This phenomenon is because, as described above, the pumping amount of the impeller 344 through the drain hole 361 is much larger than the amount of washing water discharged out of the dehydration tank 30 through the locally drilled distribution hole 315. to be.

As a result, the washing machine to which the dehydration tank 30 is applied according to the present invention maintains the water level of the dehydration tank 30 higher than the water tank 20 level at the time of washing and rinsing, so that a small amount of washing water is supplied. Washing and rinsing is also smoothly carried out to reduce the amount of water used and power consumption is reduced due to the reduction of water supply time.

As described above in detail, the washing machine to which the present invention is applied is required for washing and rinsing by the suction pumping force of the impeller even if a small amount of washing water is supplied to the dehydration tank in which the actual laundry is contained during washing and rinsing administration. Maintained at a sufficient water level, washing and rinsing are performed smoothly. As a result, the water consumption required for washing and rinsing administration is greatly reduced, and the power consumption is reduced due to the reduction of water supply time, and the amount of detergent is reduced together with water, thereby reducing the water pollution caused by domestic wastewater. .

Claims (3)

A water tank normally installed inside the housing, A tubular dehydration tank rotatably installed in the tank and having a plurality of holes perforated on a wall; It is provided to the reverse rotation in the dehydration tank and includes a pulsator having an impeller to pump the water of the tank to the dehydration tank side, The through hole is relatively less than the amount of water pumped into the dehydration tank by the impeller during the washing stroke, the amount of water exiting the water tank through the through hole is relatively punctured to generate a water level difference between the water tank and the dehydration tank. Washing machine. The method of claim 1, The through-hole washing machine, characterized in that the perforated mainly in the lower portion and the upper portion of the dehydration tank. The method of claim 1, The through hole guides the dehydration hole perforated along the upper wall of the dehydration tank to discharge the water escaped from the laundry during the dehydration stroke, and the discharge of water during the dehydration stroke, and the water is distributed between the water tank and the dehydration tank during the washing stroke. It is provided with a distribution hole perforated along the bottom surface of the dehydration tank, The central part of the wall surface of the dehydration tank washing machine characterized in that it is made of a non-weld to prevent the water in the dehydration tank to escape to the water tank during the washing operation.