KR20080002469A - Exhaust apparatus for remainder of water and washing machine therewith - Google Patents

Abstract

A device for discharging residual water in a washing machine is provided to regulate the internal pressure of a case by installing an internal pressure change device inside the case and a valve unit, thereby completely removing the undrained water remaining in the drain pipe. A device for discharging the undrained water has a discharge pipe(34) installed between one end of a case(20) and a drain pipe(16). An inlet pipe(32) is installed between a pump and the discharge pipe. A pressure change device(50) is installed inside the case. The pressure change device includes a piston(52), a driving shaft(54), a driving unit(56), and a valve unit(58). The piston is capable of sliding inside the case. The driving shaft extends out of the case and has one end fixed to the piston. The driving unit projects the driving shaft out of the case when electric power is applied, and drives the driving shaft into the case at a preset speed when the electric power is cut off. When the piston is slid to one side of the case to decrease the internal pressure of the case, the valve unit opens the inlet pipe, and when the piston is slid to the other side of the case to increase the internal pressure of the case, the valve unit opens the discharge pipe. The driving unit includes a synchronous motor(56a) combined to the driving shaft, and an elastic body(56b) interposed between an outer end of the driving shaft and an outer wall of the case. The valve unit includes a first blocking panel(58a) installed on one side of the inlet pipe, and a second blocking panel(58b) installed on one side of the discharge pipe.

Description

Residual water discharge device and washing machine having same {EXHAUST APPARATUS FOR REMAINDER OF WATER AND WASHING MACHINE THEREWITH}

1 is a cross-sectional view showing a general drum washing machine.

2 is a cross-sectional view showing a washing machine having a residual water discharge device according to an embodiment of the present invention.

3 is a perspective view showing a residual water discharge device according to an embodiment of the present invention.

4 is a cross-sectional view showing a residual water discharge device according to an embodiment of the present invention.

5 is a cross-sectional view showing a residual water inflow state of the residual water discharge apparatus according to an embodiment of the present invention.

6 is a cross-sectional view showing the remaining water discharge state of the remaining water discharge device according to an embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

10 cabinet 12 tub

14 drum 16: drain pipe

18: pump 20: case

32: inlet pipe 34: discharge pipe

50: variable means 52: piston

54 drive shaft 56 drive device

56a: tensile synchronous motor 56b: elastic member

58: valve 58a: first blocking panel

58b: second blocking panel

The present invention relates to a washing machine, and more particularly, to a residual water discharge device and a washing machine having the same to discharge the residual water remaining in the drain pipe outside the cabinet after the washing operation is finished to prevent freezing of the residual water in winter.

1 is a cross-sectional view showing a general drum washing machine.

A general drum washing machine forms a predetermined space, a front surface of which is opened, a cabinet (1) having a door (7) installed at an opening, a tub (2) installed at a predetermined amount to flow in the opening, and washing water freshwater, and the tub ( 2) a drum (3) rotatably installed inside the laundry (3), the driving device (4) installed on the tub (2), connected to the drum (3) to rotate the drum (3), and A water supply pipe 5 inserted from the outside of the cabinet 1 to supply the washing water, and a drain pipe 6 extending from the tub 2 to the outside of the cabinet 1 to discharge the washing water to the outside after the washing operation is completed; It is configured to include.

Here, a filter and a pump are installed in the drain pipe, and after the washing operation is completed, the pump is driven to discharge the fresh water in the tub to the outside of the cabinet, and the washing water discharged passes through the filter to filter foreign substances.

However, the washing machine according to the prior art has a problem that the drain pipe is arranged in the horizontal direction or the outer end is disposed above the pump, so that the laundry is left in the drain pipe after the driving of the pump is finished.

The present invention has been made in order to improve the above problems of the prior art, the remaining water discharge device to suppress the remaining laundry in the drain pipe so that a separate discharge force is generated after the drainage operation due to the drive of the pump is finished. And it is an object to provide a washing machine having the same.

Residual water discharge device according to the present invention for solving the above problems is installed in the cabinet, the tub is installed inside the cabinet is fresh water washable, the drum rotatably installed inside the tub is accommodated in the wash water, the tub A drain pipe extending out of the cabinet, a case installed on one side of the drain pipe, an inlet pipe installed between the drain pipe and the case to collect the residual water of the drain pipe into the case, and a residual water installed on the side of the case And a discharge pipe configured to be discharged, and variable means installed in the case to vary the pressure inside the case, thereby introducing washing water remaining in the drain pipe into the case and then discharging the discharge water outside the cabinet.

In addition, the discharge pipe according to the invention is characterized in that it is installed between the drain pipe at one end of the case.

In addition, the discharge pipe of the present invention is installed on the outside from the pump installed on one side of the drain pipe, characterized in that the inlet pipe is installed between the pump and the discharge pipe.

In addition, the variable means of the present invention is a piston that is slidably installed in the case, a drive shaft connected to the piston, extending outside the case, and connected to the drive shaft when the power is applied to the drive shaft outside the case And a driving device for inserting the drive shaft into the case at a predetermined speed or more when the power is cut off, and the piston is slid to one side so that the inlet pipe is opened when the pressure inside the case is reduced, and the piston Sliding to the other side is characterized in that it comprises a valve to open the discharge pipe when the pressure inside the case increases.

In addition, the driving device of the present invention is characterized in that it comprises a tension synchronous motor for connecting the drive shaft and projecting the drive shaft to the outside of the case when the power is applied, and an elastic member interposed between the outer end of the drive shaft and the case outer wall. It is done.

In addition, the valve of the present invention is characterized in that it comprises a first blocking panel installed on one side of the inlet pipe and opened to the case side, and a second blocking panel installed on one side of the discharge pipe and opened to the outside of the case.

In addition, a washing machine having a residual water discharge device according to the present invention includes a cabinet, a tub installed inside the cabinet to wash the fresh water, a drum rotatably installed inside the tub to accommodate the wash water, and installed in the tub. A drain pipe extending outward, a case installed on one side of the drain pipe, an inlet pipe installed between the drain pipe and the case to collect the residual water of the drain pipe into the case, and installed on one side of the drain pipe to discharge the residual water out of the cabinet And a discharge pipe configured to be installed in the case and varying the pressure inside the case so that the washing water remaining in the drain pipe flows into the case and discharges to the outside of the cabinet. It is characterized by.

Hereinafter, an embodiment of a residual water discharge device and a washing machine having the same according to the present invention will be described in detail with reference to the accompanying drawings.

For convenience of explanation, a drum washing machine will be described as an example. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator.

Therefore, definitions of these terms should be based on the contents throughout the specification.

2 is a cross-sectional view showing a washing machine having a residual water discharge device according to an embodiment of the present invention, Figure 3 is a perspective view showing a residual water discharge device according to an embodiment of the present invention, Figure 4 is an embodiment of the present invention Residual water discharge device according to the sectional view.

2 to 4, a washing machine having a residual water discharge device according to the present invention includes a cabinet 10, a tub 12 installed inside the cabinet 10 to wash water, and a tub 12 inside the tub 12. A drum (14) rotatably installed on the drum (14) for washing water, a tub (12) installed on the tub (12), and a case (20) installed on one side of the drain pipe (16); The inlet pipe 32 is installed between the drain pipe 16 and the case 20 so that the residual water of the drain pipe 16 is collected into the case 20, and the residual water is installed at one side of the case 20 so that the remaining water is in the cabinet 10. The discharge pipe 34 to be discharged to the outside and the case 20 is installed in the case 20 to change the pressure inside the case 20, the washing water remaining in the drain pipe 16 is introduced into the case 20 after the cabinet 10 It comprises a variable means 50 for discharging to the outside.

Thus, when the washing operation is finished, since the pressure inside the case 20 is lowered by the variable means 50, the washing water remaining in the drain pipe 16 is introduced into the case 20 through the inlet pipe 32, After the water flows in, since the pressure inside the case 20 is rapidly increased by the variable means 50, the remaining water is discharged to the outside of the cabinet 10 through the discharge pipe 34.

Here, the drain pipe 16 is installed between the pump 18 and the pump 18 and the tub 12 to discharge the washing water in the drum 14 to the outside of the cabinet 10 to filter the foreign matter ( 16a) is usually installed.

In addition, since the discharge pipe 34 is installed between the drain pipe 16 at one end of the case 20, the residual water flowing along the discharge pipe 34 in the case 20 again passes through the drain pipe 16 to the outside of the cabinet 10. The discharge pipe 34 is installed on the outside from the pump 18 installed in the drain pipe 16, and the inlet pipe 32 is provided between the pump 18 and the discharge pipe 34, thereby providing a pump 18. After the end of the operation of), the washing water remaining in the drain pipe 16 outside the pump 18 is collected into the case 20 along the inlet pipe 32, and the pressure inside the case 20 rises rapidly. The lower surface is discharged to the outside of the cabinet 10 through the discharge pipe 34 and the drain pipe (16).

The variable means 50 is connected to the piston 52 slidably installed in the case 20, the drive shaft 54 connected to the piston 52, and extended to the outside of the case 20, and the drive shaft 54. When the power is connected to the drive shaft 54 protrudes out of the case 20, when the power is cut off the drive device 56 for inserting the drive shaft 54 into the case 20 at a predetermined speed or more, and the piston ( 52 is slid to one side so that the inlet pipe 32 is opened when the pressure in the case 20 is reduced, and when the piston 52 is slid to the other side and the pressure in the case 20 is increased, the discharge pipe 34 is opened. Valve 58 to make it possible.

Here, the driving device 56 is connected to the drive shaft 54, when the power is applied to the tension synchronous motor 56a for protruding the drive shaft 54 to the outside of the case 20, the outer end and the case of the drive shaft 54 ( 20) It is configured to include an elastic member 56b interposed between the outer wall.

Thus, when power is applied to the tension synchronous motor 56a to protrude the drive shaft 54 out of the case 20, the piston 52 slides to one side while the inlet pipe 32 and the discharge pipe 34 are moved from the case 20. By lowering the pressure of the connected portion, the inflow pipe 32 is opened by the valve 58, and the washing water remaining in the drain pipe 16 flows into the case 20.

After the power supply to the tension synchronous motor 56a is cut off, the piston 52 is slid to the other side while the driving shaft 54 is rapidly inserted into the case 20 by the restoring force of the elastic member 56b.

At this time, since the pressure rapidly rises inside the case 20 into which the residual water is introduced, the discharge pipe 34 is opened by the valve 58, and the residual water is discharged to the outside of the cabinet 10 along the discharge pipe 34 and the drain pipe 16. do.

The valve 58 is installed on one side of the inlet pipe 32 to open and close to the case 20 side, and the second shutoff panel 58a to one side of the outlet tube 34 and open to the outside of the case 20. It comprises a blocking panel 58b.

Of course, any valve may be installed, such as a solenoid valve or a check valve, which is opened and closed by an electrical signal, but the above-mentioned operation can be performed by a simple structure by providing a blocking panel that opens and closes in only one direction. It can achieve the number of parts and the cost of the product can be lowered.

Looking at the operation of the washing machine having a residual water discharge device according to the present invention configured as described above are as follows.

5 is a cross-sectional view showing a residual water inflow state of the residual water discharge apparatus according to an embodiment of the present invention, Figure 6 is a cross-sectional view showing a residual water discharge state of the residual water discharge apparatus according to an embodiment of the present invention.

5 and 6, when the washing operation is finished, power is applied to the tension synchronous motor 56a to protrude the drive shaft 54 out of the case 20, so that the piston 52 slides toward one side of the case 20. While the inlet pipe 32 and the discharge pipe 34 is installed, the pressure inside the casing 20 of the portion is installed.

At this time, since the second blocking panel 58b is rotatable only to the drain pipe 16 side, the second blocking panel 58b is not rotated toward the case 20 so that the discharge pipe 34 is not opened, and the first blocking panel 58a is inside the case 20. Since the inlet pipe 32 is opened while being rotated to the side, the washing water remaining inside the drain pipe 16 due to the pressure difference between the drain pipe 16 and the case 20 flows into the case 20 along the inlet pipe 32. do.

After the power is cut off to the tension synchronous motor 56a, the drive shaft 54 is rapidly inserted into the case 20 by the restoring force of the elastic member 56b, whereby the inlet pipe 32 and the discharge pipe 34 are installed. Since the internal pressure of the case 20 rises rapidly, the first blocking panel 58a is rotated toward the drain pipe 16 to close the inlet pipe 32, and the second blocking panel 58b is rotated to the drain pipe 16. The discharge pipe 34 is opened and the remaining water collected into the case 20 is discharged to the outside of the cabinet 10 along the discharge pipe 34 and the drain pipe 16.

Thus, after the washing operation is completed, it is possible to achieve a washing machine having a residual water discharge device for discharging the residual water outside the pump 18 to the outside of the cabinet 10.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand.

In addition, the drum washing machine has been described as an example, but this is merely exemplary, and the residual water draining device of the present invention may be used in any product in which water is discharged, not the residual water draining device used in the drum washing machine.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

Residual water discharge device and a washing machine having the same according to the present invention configured as described above because the washing water remaining in the drain pipe is discharged to the outside of the cabinet after the washing operation is terminated by the case and the variable means installed on the outside of the pump remaining water in winter There is an advantage that can prevent the malfunction and damage of the washing machine generated by freezing.

Claims (7)

cabinet; A tub installed inside the cabinet to wash water; A drum rotatably installed inside the tub to accommodate laundry water; A drain pipe installed in the tub and extending outside the cabinet; A case installed at one side of the drain pipe; An inlet pipe installed between the drain pipe and the case to collect residual water from the drain pipe into the case; A discharge pipe installed at one side of the case to discharge residual water to the outside of the cabinet; And And a variable means installed in the case so as to vary the pressure in the case, thereby introducing the washing water remaining in the drain pipe into the case and then discharging it to the outside of the cabinet. The method of claim 1, The discharge pipe is a residual water discharge device, characterized in that installed between the drain pipe at one end of the case. The method of claim 2, The discharge pipe is installed on the outside from the pump installed on one side of the drain pipe, the residual water discharge device, characterized in that the inlet pipe is installed between the pump and the discharge pipe. The method of claim 1, The variable means includes a piston slidably installed in the case, a drive shaft connected to the piston and extending outside the case, and connected to the drive shaft to protrude the drive shaft out of the case when power is applied. When the power is cut off, the driving device for inserting the drive shaft into the case at a predetermined speed or more, and the piston is slid to one side so that the inlet pipe is opened when the pressure in the case is reduced, the piston is slid to the other side And a valve for opening the discharge pipe when the pressure inside the case increases. The method of claim 4, wherein The driving device is connected to the drive shaft and the power is applied, the tension synchronous motor for projecting the drive shaft to the outside of the case, and a residual member characterized in that it is interposed between the outer end of the drive shaft and the outer wall of the case Ejector. The method of claim 1, The valve includes a first shutoff panel installed on one side of the inlet pipe and opened to the case side, and a second shutoff panel installed on one side of the discharge pipe and opened to the outside of the case. cabinet; A tub installed inside the cabinet to wash water; A drum rotatably installed inside the tub to accommodate laundry water; A drain pipe installed in the tub and extending outside the cabinet; A case installed at one side of the drain pipe; An inlet pipe installed between the drain pipe and the case to collect residual water from the drain pipe into the case; A discharge pipe installed at one side of the case to discharge residual water to the outside of the cabinet; And And a residual water discharge device including variable means installed in the case to vary the pressure inside the case and introducing the washing water remaining in the drain pipe into the case and then discharging it to the outside of the cabinet. washer.

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