KR100493306B1 - Drum-type Washer - Google Patents

Abstract

The present invention provides a drum washing machine that reduces the power consumption and makes the manufacturing process simple by allowing the circulation pump and the drain pump to operate with only one motor without separately installing a motor for operating the circulation pump and a motor for operating the drain pump.

To this end, the present invention is a drum washing machine in which a circulation pump and a drain pump are installed, and a centrifugal impeller is provided therein, and the washing water suction port for sucking the washing water in the tub in the axial direction and discharging the washing water in the circumferential direction. A circulation pump having a washing water discharge port for circulating into the tub; An impeller provided therein, the drain pump having a drain suction port for sucking the wash water in the tub to one circumferential direction and a drain discharge port for discharging the sucked wash water to the other circumferential side and discharging it to the outside; The centrifugal impeller of the circulating pump and the impeller of the drain pump are axially connected to the rotating shaft at the same time, so that the forward and reverse rotation of the centrifugal impeller of the circulation pump and the impeller of the drain pump at the same time, characterized in that it comprises a motor Provide a drum washing machine.

Description

Drum Washing Machine {Drum-type Washer}

The present invention relates to a drum washing machine, and more particularly, to a circulation pump for circulating the washing water stored in the drum and a drain pump for draining the washing water after washing is completed.

In general, a washing machine is classified into a pulsator method for washing laundry by rotating water, and a drum washing method for washing laundry using a drop of laundry.

As shown in FIG. 1, a conventional drum washing machine using a drop of the laundry described above is provided with a detergent container 2 and an operation unit 3 on the front upper part of the washing machine main body. A water supply valve 4 is installed to be connected to a water supply means not shown to supply hot water and cold water.

A tub 5 is provided in the washing machine main body 1, and a drum 6 is provided in the tub 5 so as to rotate at a high speed to wash and dehydrate.

The front of the tub (5) is provided with a door (8) via the diaphragm (7) to open and close the opening of the drum (6) when the laundry cloth is put into the drum (6), the diaphragm (7) An air vent 9 is installed at the upper end of the laundry cloth in order to introduce dry air, and the front surface of the tub 5 receives vibration generated by high-speed rotation of the drum 6 during washing and dehydration. The balance weight 10 is provided so that it may be suppressed.

The outer peripheral surface of the tub (5) is connected to the condensing hose (11) for supplying cold water to condense the hot air introduced into the tub (5), the lower side of the tub (5) forward and reverse rotation of the drum (6) The power transmission means 12 is installed to make.

A drain pump 14 is installed in the middle of the drain hose 13 so as to forcibly drain the wash water drained from the tub 5 through the drain hose 13 to the outside in the washing machine main body 1. The tub 5 and the drain pump 14 are disposed at the lower front side of the washing machine main body 1 to prevent the drain pump 14 from being blocked by the laundry dregs contained in the wash water drained from the tub 5. The filter 15 is provided in the middle of the said drain pipe 17 which connects with ().

The drum 6 has a plurality of through-holes 6a formed therein so that the washing water supplied into the tub 5 flows into the drum 6, and the drum 6 is formed on the inner circumferential surface thereof. When rotated, a plurality of stirring protrusions 6b protrude toward the inner center of the drum 6 at regular intervals so as to lift and drop the laundry cloth to a certain height, and at the same time turbulence the flow of water. Grooves (not shown) protrude toward the outside of the drum 6 so that water in the drum 6 accumulates in a portion facing the plurality of stirring protrusions 6b.

In the conventional drum washing machine configured as described above, washing and rinsing are automatically performed by a drop generated by the rotation of the drum 6. In this case, water accumulated in a groove (not shown) protruding to the outside of the drum 6 is formed. The washing is performed while falling from the top to the lower by rotation to form a vortex in the wash water, but as the water accumulated in the groove does not fall all during the washing process, some flows down the side wall of the drum 6. The washing performance is lowered, and washing and rinsing water are not circulated, and when washing, the detergent is not completely dissolved and is precipitated. Thus, the bath ratio is low, which may lower the washing performance or cause unbalanced washing.

In order to compensate for the above problems, the wash water stored in the tub 5 is circulated by the pumping force of the pump to improve washing and rinsing performance, as shown in FIG. 2, the drain pump 14 and the filter. A separate circulation pump 16 for circulating the washing water is installed between the parts 15, and the washing water is purified to the upper portion of the tub in the circulation pump 16 to wash the water into the drum 6. The circulation hose 18 which can be supplied is connected.

Therefore, the washing water stored in the tub 5 during washing and rinsing is discharged through the drain pipe 17 by the operation of the circulation pump 16 to circulate to the upper end of the drum 6 along the circulation hose 18.

Of course, during the discharge of the wash water and rinsing water is discharged to the outside through the drain hose 13 by the operation of the drain pump (14).

However, since the circulation pump 16 and the drain pump 14 operate by separate motors, the manufacturing cost is increased, and the process of mounting the motor is accompanied, so that the working time is delayed and the process becomes difficult. There is a problem.

In addition, since the two motors are operated, there is a problem that the power consumption increases.

The present invention has been made in order to solve the above-mentioned problems of the prior art, it is possible to operate the circulation pump and the drain pump by only one motor without installing a motor for operating the circulation pump and a motor for operating the drain pump. Its purpose is to provide a drum washing machine with reduced consumption and a simple manufacturing process.

In order to achieve the above object, the present invention provides a drum washing machine in which a circulation pump and a drain pump are installed, and a centrifugal impeller is provided therein, and the washing water suction port for sucking the washing water in the tub in the axial direction and the sucked washing water are circumferential. A circulation pump having a washing water discharge port for circulating into the tub by discharging in a direction; An impeller provided therein, the drain pump having a drain suction port for sucking the wash water in the tub to one circumferential direction and a drain discharge port for discharging the sucked wash water to the other circumferential side and discharging it to the outside; The centrifugal impeller of the circulating pump and the impeller of the drain pump are axially connected to the rotating shaft at the same time, so that the forward and reverse rotation of the centrifugal impeller of the circulation pump and the impeller of the drain pump at the same time, characterized in that it comprises a motor Provide a drum washing machine.

In particular, the drain pump is characterized in that the friction pump is the fluid absorbed in the circumferential direction is discharged again in the circumferential direction. In addition, the circulation pump is characterized in that the centrifugal pump is discharged in the circumferential direction of the fluid absorbed in the drive shaft direction of the pump.

The structure of this invention is demonstrated in detail, referring an accompanying drawing. For reference, prior to describing the configuration of the present invention, in order to avoid duplication of description, the same reference numerals as those of the prior art will be referred to.

Since the general configuration of the drum washing machine in the prior art is described in detail, the present invention will only refer to the features that are contrasted with the prior art.

Figure 3 is a cross-sectional view showing a preferred embodiment of the drum washing machine according to the present invention and Figure 3 schematically shows the circulation pump 20, the drain pump 30 and the motor 40 of the present invention.

As shown in FIG. 3 and FIG. 4, the motor 40 is installed in the bottom of the tub 5 of the drum washing machine, and the two pumps 20 and 30 are spoken in the axial direction of the motor 40. As shown in FIG. . The pump located in front of the two pumps is the circulation pump 20, and the pump located in the rear is the drainage pump 30.

The circulation pump 20 and the drain pump 30 are all connected by one shaft and driven by a single motor 40.

The washing water suction port 22 is formed on the shaft of the circulation pump 20 to suck the washing water flowing out from the bottom of the tub 5 of the drum washing machine, and the suction side is disposed on the circumferential side of the circulation pump 20. A washing water discharge port 24 for discharging the washing water is formed.

That is, the circulating pump 20 performs a pumping action of sending the wash water introduced into the wash water suction port 22 back to the wash water discharge port.

The washing water discharged to the washing water discharge port 24 is lifted by the illustrated circulation channel 26 and sprayed from the front side of the tub 5. As such, the water accumulated in the bottom of the tub 5 is circulated again and sprayed into the rotating drum 6 so that the laundry is evenly soaked.

In addition, the drain pump 30 provided at the rear of the circulation pump 20 has a drain suction port 32 and a drain discharge port 34 formed on the circumferential side of the pump. The drain suction port 32 is a passage through which the washing and rinsing water is completely completed, and the drain discharge port 34 is a passage through which the washing and rinsing water is discharged by a pumping action.

As shown, the drain outlet 34 is connected to the drainage channel 36, and the washing water having been washed and rinsed is discharged to the outside of the washing machine along the drainage channel 36.

Hereinafter, the structure of the circulation pump 20 and the drain pump 30 will be described in more detail.

5 shows a cross section of the circulation pump 20, and FIG. 6 shows a cross section of the drain pump 30.

FIG. 5 is a sectional view taken along line I-I of the circulation pump 20 shown in FIG. 4, showing a centrifugal pump form. The centrifugal pump is a pump configured to form a right angle between the suction fluid and the discharged fluid, and pumps the fluid by centrifugal force.

The circulation pump 20 is provided with a spiral centrifugal impeller (21: impeller), washing water is sucked through the washing water suction port 22 formed on the rotating shaft, and the washing water is rotated as the centrifugal impeller 21 rotates. It moves and is ejected to the wash water discharge port 24.

When the motor 40 rotates clockwise based on the circulation pump sectional view of FIG. 5, the sucked washing water is ejected to the washing water discharge port 24 while the centrifugal impeller 21 rotates in conjunction with the motor 40. When rotated counterclockwise, only the air is penetrated because there is no washing water to be drawn in the washing water discharge port (24).

FIG. 6 is a II-II cross-sectional view of the drain pump 30 shown in FIG. 4, showing the shape of the friction pump.

The drain pump 30 is provided with an impeller 31 therein, the impeller 31 has a plurality of vanes (vane) is formed on the circumference to move the washing water in the rotational direction of the impeller 31 Do it.

That is, the friction pump to move the wash water using the friction force.

6, it can be seen that the sucked wash water is discharged to the drain outlet 34 when the motor 40 rotates counterclockwise.

Hereinafter, the circulation of the washing water and the drainage will be described according to the rotation direction of the motor 40 operating the circulation pump 20 and the drain pump 30.

First, when the motor 40 rotates in a forward direction, that is, in a clockwise direction, the circulation pump 20 sucks the wash water accumulated in the tub 5 into the wash water suction port 22 and washes it as shown in FIGS. 4 and 5. The washing water is circulated while being discharged to the water discharge port 24. At this time, since the drain pump 30 pumps the fluid at the drain discharge port 34 to the drain suction port 32, only the air penetrates, and the drainage action cannot be achieved.

Washing water that proceeds to the circulating flow path tube 26 through the washing water discharge port 24 is sprayed into the drum from the upper side to repeat the circulating action.

On the contrary, when the motor 40 rotates in the reverse direction, that is, counterclockwise, the circulation pump 20 serves to pump the fluid on the washing water discharge port 24 side to the washing water inlet 22 side, so that the opposite direction to the circulation direction As a result, only the air penetrates and the movement of the wash water does not occur.

However, since the impeller 31 moves the wash water from the drain suction port 32 to the drain discharge port side as the impeller 31 rotates counterclockwise, the drain pump 30 draws the wash water accumulated inside the tub to discharge the drain discharge port. It exits to 34 and is discharged to the outside of the washing machine through the drainage channel 36 connected to the drain outlet 34.

By connecting the circulation pump and the drain pump to a single motor, the number of motors can be reduced and the process can be simplified.

By adjusting the rotational direction of the motor, it is possible to configure only the circulation or the drainage so that a complicated system for driving the two pumps individually can be avoided.

1 is a schematic cross-sectional view of a conventional drum washing machine.

Figure 2 is a schematic longitudinal cross-sectional view showing a water circulation device of the drum washing machine by a conventional circulation pump.

Figure 3 is a schematic cross-sectional view showing a preferred embodiment of the drum washing machine according to the present invention.

4 is a schematic configuration diagram of a circulation pump, a drainage pump and a motor according to the present invention;

5 is a cross-sectional view of the circulation pump according to the present invention.

6 is a cross-sectional view of a drain pump according to the present invention.

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

5: tub 6: drum

20: circulation pump 21: centrifugal impeller

22: washing water inlet 24: washing water outlet

26: circulating flow pipe 30: drainage pump

31: impeller 32: drainage inlet

34: drain discharge port 36: drain flow pipe

40: motor

Claims (3)

In the drum washing machine equipped with the circulation pump and the drain pump, A circulating pump having a centrifugal impeller therein and having a washing water inlet for sucking the wash water in the tub in the axial direction and a washing water discharge port for discharging the sucked washing water in the circumferential direction and circulating it into the tub; An impeller provided therein, the drain pump having a drain suction port for sucking the wash water in the tub to one circumferential direction and a drain discharge port for discharging the sucked wash water to the other circumferential side and discharging it to the outside; The centrifugal impeller of the circulating pump and the impeller of the drain pump are axially connected to the rotating shaft at the same time, so that the forward and reverse rotation of the centrifugal impeller of the circulation pump and the impeller of the drain pump at the same time, characterized in that it comprises a motor Drum Washing Machine. The method of claim 1, When the motor rotates forward, The circulation pump flows the washing water from the washing water suction port to the washing water discharge port, and the drain pump flows air from the drain discharge port to the drain suction port. When the motor rotates in reverse direction, The circulation pump flows air from the washing water discharge port to the washing water suction port, and the drain pump flows the washing water from the drain suction port to the drain discharge port. delete