KR20000002304A - Remaining water removing device of drum washing machine - Google Patents

Abstract

PURPOSE: A remaining water removing device of a drum washing machine is provided to prevent bad smell by the remained water and to prevent the water contained when using a washing machine from being contaminated. CONSTITUTION: The remaining water removing device of a drum washing machine comprises: an establishment input unit(40) capable of establishing a function of the drum(11) washing machine; a water level sensor(50) capable of sensing the water level in the drum; a timer(60) for adding up time; a driving motor unit(22) for operating a driving motor(21) based on the control of a control unit(70); a drain pump driving unit(32) for driving a drain pump(31) while draining

Description

Residual water removal device of drum washing machine

The present invention relates to a residual water removing device of a drum washing machine, and more specifically, to a residual water removing hose for removing residual water in a drain hose of a drum washing machine. The present invention relates to a drainage device for a drum washing machine capable of draining water through a drainage hose by stopping the operation of the pump and draining the residual water by a siphon phenomenon.

In general, a drum washing machine is a washing machine having an advantage of less damage due to twisting of the laundry in the same effect as tapping the laundry with a laundry bat by tapping the laundry using a drop generated by the rotation of the rotating tub provided in a drum shape.

In addition, it automatically executes washing, rinsing, and dehydration operations in accordance with a pre-programmed program.

1 is a schematic diagram illustrating drainage of a conventional drum washing machine.

In general, a drum washing machine includes a main body formed of a rectangular parallelepiped and a cylindrical drum 1 suspended inside the main body, and a rotating tub 2 rotatably provided inside the drum 1. . And a drive motor is installed in the rear lower part of the main body for this rotating tank.

And the upper end is supported by the main body for the support of the drum 1, the lower end is provided with four suspension springs supported on the outer surface of the drum (1). The upper end of the drum 1 is supported by this suspension spring, and the lower end of the drum 1 is supported by a separate shock absorber. This shock absorber is provided in the form of two rods supporting the lower end of the drum 1 on the bottom of the main body.

The rotating tub 2 is installed inside the drum 1 and is provided in a cylindrical shape. A plurality of holes are drilled in the rotary tub 2 to allow washing water to flow inside the rotary tub 2 and the drum 1 at the time of washing so that the centrifuged water leaves the drum 1 at the time of dehydration. Be sure to

And the rear end of the rotating tub (2) is provided with a shaft whose outer end extends to the outside of the drum (1), a pulley is provided at the outer end of the shaft. In addition, a belt is installed on the pulley and the driving motor to transmit the rotational force of the driving motor to the rotating tub.

In addition, the lower part of the drum (1) is connected to the internal drainage hose (3) for the drainage of sewage after washing, the drainage pump for forced pumping of the sewage in the drum (1) on the extension line of the internal drainage hose (3) 4) is installed on the bottom of the main body. And an external drainage hose 5 for draining the sewage forcedly pumped by the drainage pump 4 to the outside is provided.

After the washing stroke or the rinsing stroke, the sewage in the drum 1 must be drained, and the drain pump 4 is operated to drain the sewage. Sewage in the drum (1) is introduced into the drainage pump (4) through the internal drainage hose (3), sewage introduced into the drainage pump (4) is forcibly pumped by the drainage pump (4) to drain pump (4) It is drained to the outside of the washing machine through the external drain hose 5 connected to the discharge port of.

In the conventional drainage operation of the drum washing machine as described above, even if the drainage stroke is completed, the residual water of the water level of FIG. 1B remains in the internal drainage hose 3.

Residual water remaining in the internal drainage hose (3) may cause odor, and contaminates the newly watered water in the subsequent use of the washing machine.

The present invention has been made to solve the above problems, the object is to provide a drain hose having a smaller diameter than the original drain hose in the drain hose drained to the outside in the drum washing machine, forcibly pumped by the drain pump It is intended to provide a residue washing apparatus of a drum washing machine in which the residual water after removing the residual water can be removed by a siphon phenomenon in a drain hose having a small diameter.

1 is an explanatory view of drainage of a conventional drum washing machine.

2 is a perspective view of a drum washing machine according to the present invention.

3 is a block diagram of a drum washing machine according to the present invention.

4 is a flow chart of the drain control of the drum washing machine according to the present invention.

5 is an explanatory view of drainage of the drum washing machine according to the present invention.

FIG. 6 is a cross-sectional view taken along line AA ′ of FIG. 5.

Explanation of symbols on the main parts of the drawings

10: body 11: drum

12: rotating tank 13: balance weight

14: present gas spring 15: shock absorber

21: drive motor 22: drive motor drive unit

23: Belt 24: Pulley

31: Drainage pump 32: Drainage pump drive part

33: Internal drain hose 34: External drain hose

35: Residual water removal hose 40: Setting input part

50: water level sensor 60: timer

70: control unit 81: water supply valve drive unit

82: water supply valve

Residual water removal device of the drum washing machine according to the present invention for realizing the above object, a drain pump for pumping and draining the sewage during drainage, a drain hose for discharging the sewage pumped by the drainage pump, sewage by the drain pump In the drum washing machine provided with a water level detection unit for detecting the water level when the water is drained, the residual water removal hose installed in the longitudinal direction of the drain hose in the drain hose having a diameter of a predetermined size to cause the siphon phenomenon, drainage when draining The pump is operated to drain the sewage into the drain hose and the residual water removal hose by the pumping action of the drainage hose. When the water level detected by the water level detector reaches the predetermined level, the drain hose is not drained and the residual water removal hose It characterized in that it comprises a control unit for stopping the operation of the drain pump so that it can be continuously drained by to be.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings.

2 is a perspective view of a drum washing machine according to the present invention.

3 is a block diagram of a drum washing machine according to the present invention.

4 is a flow chart of the drain control of the drum washing machine according to the present invention.

5 is an explanatory view of drainage of the drum washing machine according to the present invention.

FIG. 6 is a cross-sectional view taken along line AA ′ of FIG. 5.

The drum washing machine according to the present invention includes a main body (10) provided with a rectangular parallelepiped and a cylindrical drum (11) suspended inside the main body (10), and is rotatably installed in the drum (11). The rotating tub 12 is provided. And the drive motor 21 is installed in the rear lower portion of the main body 10 for the rotary tank 12.

And the upper end is supported by the main body 10 for supporting the drum 11, the lower end is provided with four suspension springs 14 supported on the outer surface of the drum (11). The upper end of the drum 11 is supported by this suspension spring 14, and the lower end of the drum 11 is supported by a separate shock absorber 15. The shock absorber 15 is provided in two rod-like shapes that support the lower end of the drum 11 on the bottom surface of the main body 10.

The rotating tub 12 is installed in the drum 11 and is provided in a cylindrical shape. A plurality of holes are drilled in the rotary tub 12 to allow washing water to flow inside the rotary tub 12 and the drum 11 during washing so that the centrifuged water leaves the drum 11 when dewatering. Be sure to

And the rear end of the rotating tub 12 is provided with a shaft whose outer end extends to the outside of the drum 11, the pulley 24 is provided at the outer end of the shaft. The belt 23 is installed on the pulley 24 and the driving motor 21 so that the rotational force of the driving motor 21 is transmitted to the rotating tub 12.

In addition, an inner drain hose 33 for drainage after washing is connected to the lower part of the drum 11, and a drain pump for forced pumping of sewage in the drum 11 is provided at the extension of the sewage of the inner drain hose 33. 31 is provided at the bottom of the main body 10. An external drain hose 34 is connected to the discharge port of the drain pump 31.

On the other hand, the external drainage hose is composed of a multi-structure, the residual water removal hose 35 having a smaller diameter inside the external drainage hose 34 is built.

Residual water removal hose 35 drains sewage by pumping the drainage pump 31 when the drainage pump 31 is in operation, and sewage due to siphon when the operation of the drainage pump 31 is stopped. Hose to drain the remaining water. In this case, siphon refers to a sucking tube, a straw, and the like, and a siphon phenomenon refers to a phenomenon in which a liquid is sucked into a tube.

Looking at the block diagram of a drum washing machine according to the present invention.

The control unit 70 includes a setting input unit 40 for setting the function of the washing machine of the drum 11, a water level sensor 50 for detecting the water level in the drum 11, and a timer 60 for integrating time. Is electrically connected.

In addition, the driving motor driving unit 22 for operating the driving motor 21 is connected to the control unit 70, and the drain pump driving unit 32 for driving the drain pump 31 when draining is connected to the control unit 70. Connected.

The user can set each function of the washing machine through the function setting unit 40. The control unit 70 operates the washing machine according to the setting to perform the washing stroke and the rinsing stroke, and after the washing stroke and the rinsing stroke, the control unit ( 70), at the end of each stroke, carry out a drainage operation to discharge the sewage.

The process of drainage administration according to the above description is as follows.

First, in order to drain the sewage, the drain pump 31 needs to be operated, and the control unit 70 controls the drain pump driver 32 to operate the drain pump 31 to drain water.

The drain pump driver 32 turns the drain pump 31 on (S11) under the control of the controller 70.

When the drain pump 31 is turned on, the sewage in the drum 11 is sucked and pumped into the drain pump 31 through the inner drain hose 33 and is discharged through the outer drain hose 34 and the residual water removal hose 35. Drained to the outside (S12).

When the drainage is started, the control unit 70 detects the level of sewage remaining in the drum 11 through the water level sensor 50. The controller 70 detects the water level of the sewage and determines whether the detected water level is the drain pump position (d) in FIG. 6 (S13).

In this case, the position of the drain pump 31 refers to a water level such that air does not enter the inlet of the drain pump 31 (when it is drained by (C) water level in FIG. 6 and left by (D) level).

However, if it is determined in S13 that the water level of the sewage detected by the water level sensor 50 is the location of the drain pump 31, the controller 70 controls the drain pump driver 32 to operate the drain pump 31. Stop (S14). When the operation of the drain pump 31 is stopped, the water drained to the external drain hose 35 is stopped.

However, the water drained into the residual water removal hose 35 continues to be sucked by the siphon phenomenon and is drained (S14). Thus, water up to the level where the residual water removal hose 35 is located is automatically drained even if the drain pump 31 stops operating. At this time, the time to drain the residual water to the residual water removal hose 35 is determined according to the hole size of the residual water removal hose 35.

As described above, the residual water after draining is sucked out through the residual water removal hose due to the siphon phenomenon, so that the residual water can be effectively drained, and since the drain pump is not operated, the operation noise of the drain pump or the inlet of the drain pump Residual water can be removed without the noise generated by air inhalation.

Residual water removal device of the drum washing machine according to the present invention, having a residual water removal hose for removing the residual water in the drain hose of the drum washing machine, when the drainage is started by pumping the sewage by the drainage pump to the drain hose and the residual water removal hose Drain the sewage, stop the drain pump when the water level reaches the predetermined level, and the remaining water can be drained through the water removal hose by the siphon phenomenon so that the water can be drained easily. There is no hassle, it can prevent the odor caused by the residual water, and since the water used when using the washing machine can be prevented from being contaminated by the residual water.

Claims (3)

In a drum washing machine having a drain pump for pumping and draining sewage when drained, a drain hose for discharging the sewage pumped by the drain pump, and a water level sensing unit for detecting the water level when the sewage is drained by the drain pump. , Residual water removal hose having a diameter of a predetermined size to cause a siphon phenomenon and installed in the longitudinal direction of the drain hose inside the drain hose, When the drainage is operated, the drainage pump drains the wastewater to the drainage hose and the residual water removal hose by the pumping action of the drainage hose, and when the level detected by the level sensing unit reaches a predetermined level, the drainage hose is not drained. Residual water removal device of the drum washing machine characterized in that it comprises a control unit for stopping the operation of the drain pump so that it can be drained continuously by the siphon phenomenon. The method of claim 1, Residual water removal device of the drum washing machine, characterized in that the drain hose is installed to face downward when the drain hose is connected to the discharge port of the drain pump. The method of claim 1, The predetermined water level is the residual water removal apparatus of the drum washing machine, characterized in that the water level when the water level is higher than the height of the inlet of the drain pump.