KR100730943B1 - Bubble removing device for drum type washing machine - Google Patents

Abstract

The present invention relates to a bubble washing structure of a drum washing machine, and more particularly, to a drum washing machine having one end connected to the drying duct and the other end connected to the tub so that air inside the tub is sucked into the drying duct. In; A foam sensor unit for sensing that the foam flows backward along the condensation duct in the direction of the drying duct; The water supply unit is configured to spray the condensed water into the condensation duct by the signal sensed by the foam sensor unit.

According to the present invention as described above, by sensing the phenomenon that the foam generated during the drying process of the drum washing machine along the condensation duct by spraying the condensate water to the condensation duct to prevent the backflow of the foam to operate the drum washing machine Will improve.

Drum washing machine, foam, condensation duct, water supply

Description

Bubble removing device for drum type washing machine

1 is a perspective view showing a main portion of a conventional drum washing machine.

2 is a side view of FIG. 1;

Figure 3 is a side view of the drum washing machine to which the bubble removing structure of the drum washing machine according to an embodiment of the present invention is applied.

Figure 4 is a perspective view of the bubble removing structure of the drum washing machine according to an embodiment of the present invention.

5 is a view showing a state before operation of the bubble removing structure of the drum washing machine according to an embodiment of the present invention.

Figure 6 is a view showing a state after the operation of the bubble removing structure of the drum washing machine according to an embodiment of the present invention.

7 is a view showing a moving member according to the second embodiment of the present invention.

8 is a view showing a moving member according to the third embodiment of the present invention.

9 is a view showing a moving member according to the fourth embodiment of the present invention.

FIG. 10 is a view illustrating a bubble sensor unit to which an optical sensor is applied according to a fifth embodiment of the present invention; FIG.

FIG. 11 is a view illustrating a foam sensor unit to which a pressure sensor is applied according to a sixth embodiment of the present invention. FIG.

<Description of Symbols for Main Parts of Drawings>

1: cabinet 3: spring

5: damper 7: tub

9: drum 11: lift

13: drive motor 15: stator

17: rotor 19: main pipe

21: water supply connector 23: detergent box

25: drain pipe 27: filter

29: drain pump 31: Brow

33: drying duct 35: connection

36: heater 37,90: condensation duct

38: door 39: water supply pipe

40: bubble sensor 42: locking member

44: guide rail 50, 51, 80, 81: moving member

52: frame 54: wire

56: vent 58,88: connecting plate

59,86: guide groove 60: sensor member

62: first terminal 64: second terminal

66: light sensor 67: locking jaw

68: pressure sensor 70: water supply

72: connecting member 74: injection member

82: disc 84: through-hole

The present invention relates to a bubble washing structure of the drum washing machine, and more particularly, to detect the foam generated excessively during washing, including the drying process in the drum washing machine to backflow the condensation duct to spray the condensate for removing bubbles It relates to a bubble removing structure of the drum washing machine having a water supply.

As shown in Fig. 1 and Fig. 2, a general drum washing machine is installed so as to be suspended by a spring (3) inside the cabinet (1) to form an appearance and inside the cabinet (1) and supported by a damper (5). The tub 7 is installed as much as possible.

The drum (9) is rotatably installed inside the tub (7) to become a space in which washing water and laundry are contained, and the lift (11) is installed to protrude at an interval on the inner wall of the drum (9). As the drum 9 is rotated, the laundry is lifted and then dropped to improve the washing force.

The drum 9 has a plurality of dehydration holes are formed on the inner wall surface to allow the washing water to flow freely to the drum 9 and the tub 7 side, and to allow the washing water to escape from the laundry by centrifugal force during dehydration.

A driving motor 13 is installed at the rear of the tub 6 to connect the drum 9 to rotate the drum 9.

The drive motor 13 is composed of a stator 15 made of an electromagnet and a rotor 17 made of a permanent magnet.

The tub 7 of the drum washing machine is connected to the detergent box 23 by a water supply connector 21 at a main pipe 19 for supplying washing water, and the water passing through the detergent box 23 is It is fed into the tub (7).

In addition, a drain pipe 25 is connected to the filter 27 at the lower side of the tub 7, and a drain pump 29 is installed at the volleyball pipe 25 passing through the filter 27.

In addition, a blower 31 for blowing air in one direction is installed above the tub 7, and a heater 36 is provided inside the drying duct 33 through which the air generated by the blower 31 is moved. Is installed.

The drying duct 33 has one end connected to the entrance where the tub 7 and the door 38 meet to form a connection part 35.

And, both ends are connected to the lower end of the tub 7 and the blower 31, respectively, and a condensation duct 37 is installed.

A water supply pipe 39 is connected inside the condensation duct 37 to supply a small amount of water set inside the condensation duct 37.

Looking at the operation of the prior art configured as described above are as follows.

First, when a washing stroke is performed in a state in which laundry is contained in the drum 9, a water supply valve connected to the main pipe line 19 is opened to wash the water into the tub 7 and the drum 9.

The washing water is passed through the main pipe 19 and the water supply connector 21 to the detergent box 23 is supplied to the tub (7) with the detergent, into the tub (7) Appropriate amount of washing water is supplied according to the quantity of laundry.

Then, as the drive motor 13 is operated to rotate the drum 9, the lift 11 raises the laundry to a certain height, and then falls to wash the laundry.

When the washing stroke is completed as described above, the drain pump connected to the drain pipe 25 is opened to drain the wash water, and then the motor 13 is operated at high speed to rotate the drum 9 at high speed. Intermittent dehydration proceeds by allowing the wash water to escape from the laundry by centrifugal force, and the water supply valve is opened again to supply the wash water and at the same time the drum 9 is rotated to rinse.

As such, rinsing and intermittent dehydration are repeatedly operated, followed by a dewatering stroke.

In order to dry the laundry made through the process, the blower 31 is rotated so that the air heated by the heater 36 is connected to the tub 7 and the drum 9 through the connection part 35. Will be transferred.

The humid air inside the tub 7 is moved upward along the condensation duct 37 to remove moisture in the air by the condensed water supplied from the water supply pipe 39.

When the moisture removal in the air by the condensate will be described in detail, the humid air inside the tub 7 moves upward along the condensation duct 37 while being in contact with the condensate supplied from the water supply pipe 39. Therefore, the moisture in the air is removed again is supplied to the drying duct 33 through the blower (31).

By the repetitive air circulation structure as described above, the laundry inside the drum 9 is dried, and the condensation duct 37 collects water in the air by condensing it.

However, even after the rinsing cycle is completed, there is a case where the detergent component remains in the laundry, in which case foaming occurs during the dehydration stroke.

The bubbles generated during the dehydration administration are not discharged along the drainage pipe 25 together with the washing water, and flow back into the condensation duct 37. Therefore, the foam passes through the condensation duct 37 during the drying operation. The problem is that the air flow and the moisture removal in the air is not made smoothly.

SUMMARY OF THE INVENTION An object of the present invention for solving the above-mentioned conventional problems is to solve the problem that the air flow and moisture removal in the air are not smoothly performed by bubbles flowing back to the inside of the condensation duct during the drying operation. It is to provide a defoamer structure of the drum washing machine.

The present invention for achieving the above object, in the drum washing machine having a condensation duct connected to the drying duct and the other end is connected to the tub so that the air inside the tub is sucked into the drying duct; A foam sensor unit for sensing that the foam flows backward along the condensation duct in the direction of the drying duct; The water supply unit is configured to spray the condensed water into the condensation duct by the signal sensed by the foam sensor unit.

Preferably, the foam sensor unit; A catching member protruding into the condensation duct; A moving member installed above the locking member and floating upward by a bubble flowed back along the condensation duct; It consists of a sensor member that is operated by the upward movement of the moving member to measure the generation of bubbles.

In addition, the movable member has a plurality of through-holes formed on the inner side of the disc made of a conductive material, or the wire crosses the inner side of the frame made of a conductive material.

In addition, the moving member is provided with a connecting plate made of a conductive material so as to be in contact with both sides across the center in a straight line.

The sensor member may include a pressure sensor protruding into the condensation duct, or protrude in a shape in which terminals having different polarities face each other toward the inner surface of the condensation duct, or sense an upward movement of the moving member. An optical sensor is installed to face the inside of the condensation duct.

The water supply unit includes a connection member connected to the water supply pipe of the drum washing machine to receive condensed water; Is mounted to one end of the connecting member is composed of a spray member formed in the discharge hole on the lower side.

A guide groove is formed on the side surface of the movable member, and the guide rail protrudes upward and downward along an inner side surface of the condensation duct.

According to the present invention as described above, by sensing the phenomenon that the foam generated during the drying process of the drum washing machine along the condensation duct by spraying the condensate water to the condensation duct to prevent the backflow of the foam to operate the drum washing machine Will improve.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings, and like reference numerals will be used to designate like elements.

Figure 3 is a side view of the drum washing machine is applied to the bubble washing structure of the drum washing machine according to the embodiment of the present invention, Figure 4 is a perspective view of the bubble washing structure of the drum washing machine according to the embodiment of the present invention, Figure 5 is an embodiment of the present invention Figure 6 is a view showing a state before the operation of the bubble washing structure of the drum washing machine, Figure 6 is a view showing a state after the operation of the bubble removing structure of the drum washing machine according to an embodiment of the present invention, Figure 7 is a second embodiment of the present invention 8 is a view showing a moving member according to an example, Figure 8 is a view showing a moving member according to a third embodiment of the present invention, Figure 9 is a view showing a moving member according to a fourth embodiment of the present invention, Figure FIG. 10 is a view illustrating a foam sensor unit to which an optical sensor is applied according to a fifth embodiment of the present invention, and FIG. 11 is a view illustrating a foam sensor unit to which a pressure sensor is applied according to a sixth embodiment of the present invention.

As shown in Fig. 2 and 3, the drum washing machine is installed so as to be suspended by a spring (3) in the cabinet (1) and the cabinet (1) forming the appearance and supported by the damper (5). Tub 7 is installed.

The drum (9) is rotatably installed inside the tub (7) to become a space in which washing water and laundry are contained, and the lift (11) is installed to protrude at an interval on the inner wall of the drum (9). As the drum 9 is rotated, the laundry is lifted and then dropped to improve the washing force.

The drum 9 has a plurality of dehydration holes are formed on the inner wall surface to allow the washing water to flow freely to the drum 9 and the tub 7 side, and to allow the washing water to escape from the laundry by centrifugal force during dehydration.

A driving motor 13 is installed at the rear of the tub 6 to connect the drum 9 to rotate the drum 9.

The drive motor 13 is composed of a stator 15 made of an electromagnet and a rotor 17 made of a permanent magnet.

The tub 7 of the drum washing machine is connected to the detergent box 23 by a water supply connector 21 at a main pipe 19 for supplying washing water, and the water passing through the detergent box 23 is It is fed into the tub (7).

In addition, a drain pipe 25 is connected to the strainer 27 at the lower side of the tub 7, and a drain pump 29 is installed at the volleyball pipe passage 25 passing through the strainer 27.

In addition, a blower 31 for blowing air in one direction is installed above the tub 7, and a heater 36 is provided inside the drying duct 33 through which the air generated by the blower 31 is moved. Is installed.

The drying duct 33 has one end connected to the entrance where the tub 7 and the door 38 meet to form a connection part 35.

And, both ends are connected to the lower end of the tub 7 and the blower 31, respectively, and a condensation duct 90 is installed.

Inside the condensation duct 90, a bubble washing structure of a drum washing machine for removing bubbles and condensing moisture in the air is installed.

Below the condensation duct 90 is provided a foam sensor unit 40 for sensing that the bubbles flow back toward the drying duct 33 along the condensation duct 90.

In addition, a water supply unit 70 for injecting condensed water into the condensation duct 90 by the signal sensed by the foam sensor unit 40 is installed above the condensation duct 90.

The structure of the foam sensor unit 40 according to the first embodiment of the present invention, as shown in Figure 4 to 6, the ring-shaped engaging member 42 formed to protrude into the condensation duct 90, The movable member 50 installed above the locking member 42 and floated upward by the foam flowed back along the condensation duct 90 is operated by the upward movement of the movable member 50 to form the foam. It consists of a sensor member 60 to measure the occurrence.

The locking member 42 has a predetermined interval along the inner surface of the condensation duct 90 in the technical idea that the moving member 50 protrudes into the condensation duct 90 in order to prevent the moving member 50 from escaping downward. Various shape changes, including protruding to be formed will be possible.

In addition, the movable member 50 has a wire 54 intersecting with each other inside the ring-shaped frame 52 made of a conductive material to form a ventilation hole 56, the connection plate 58 made of a conductive material is Both sides are installed so as to be in contact with the frame 52 across the central portion in a straight line.

Guide grooves 59 are formed at both sides of the side of the frame 52, and guide rails 44 are protruded from the inner surface of the condensation duct 90 corresponding to the movement of the movable member 50. It is guided to make horizontal state.

In addition, the sensor member 60 operated by the upward movement of the movable member 50 is a terminal having a different polarity to the inner surface of the condensation duct 90 and the second terminal 64. ) Is formed to protrude in a shape facing each other.

In addition, the configuration of the water supply unit 70 is connected to the water supply pipe of the drum washing machine is connected to the connection member 72 of the pipe shape for receiving condensed water, and is mounted on one end of the connection member 72, the injection hole formed in the lower side The member 74 is comprised.

The shape of the discharge hole may be formed in the circumferential direction so that the injection is made toward the inner surface of the condensation duct 90, or the discharge hole may be uniformly formed on the lower side of the injection member 74, and various shapes may be changed. will be.

As shown in FIG. 7, according to the movable member 51 according to the second embodiment of the present invention, the connecting plate 58 is removed from the movable member 50 illustrated in FIGS. 4 to 6. Since the material of the frame 52 is made of a conductive material, the frame 52 is in contact with the first terminal 62 and the second terminal 64 to apply an electrical signal when the upper side of the moving member 51 moves. .

As shown in Figure 8, according to the moving member 80 according to the third embodiment of the present invention, a plurality of through-holes 84 are formed inside the disk 82 made of a conductive material, the side of the guide rail ( Guide grooves 86 for insertion of 44 are formed.

And, as shown in Figure 9, the configuration in which the connecting plate 88 of the conductive material is installed on the disc 82 also constitutes the moving member 81 according to the fourth embodiment of the present invention.

The movable members 50, 51, 80, and 81 move upward by the bubbles flowing back into the condensation duct 90, and provide maximum resistance to air flows upward along the condensation duct 90. The vent 56 or the vent 84 is formed to have less.

Then, the connecting plate 58, 88, frame 52 or the disc 82, etc. made of a conductive material to operate the sensor member 60 by the upper movement of the moving member (50, 51, 80, 81) Will be used.

However, as shown in FIG. 10, the optical sensor 66 is used as the sensor member 60 according to the fifth embodiment of the present invention, or as shown in FIG. 11, the sensor member according to the sixth embodiment of the present invention. When the pressure sensor 68 is used as the 60, the configuration of the connecting plates 58 and 88 in the moving members 50 and 81 is not necessary, and the materials of the frame 52 and the disc 82 are conductive materials. Not limited to being able to use a variety of materials will be another embodiment of the present invention.

And, as shown in Figure 10, in the case of using the optical sensor 66 as the sensor member 60, in order to prevent the departure of the upper side of the moving member 50, the locking step on the upper side of the optical sensor 66. Protrudes to form (67).

As shown in FIG. 11, the pressure sensor 68 may use a method in which a measurement unit is bent upward by a predetermined angle by an upward movement of the movable member 50, and is operated by measuring only contact. A pressure sensor 68 is also used.

In the drum washing machine having the above configuration, the operation state by the same components as in the prior art will be referred to the related art. Hereinafter, the operation state of the bubble removing structure of the drum washing machine according to the embodiment of the present invention will be described.

The laundry in the drum (9) is finished in the rinsing stroke and entering the dehydration stroke in the washing stroke, when the detergent remains in the laundry, bubbles are generated during the dehydration stroke.

The humid air inside the tub 7 including the foam is sucked into the condensation duct 90, and the moving member 50 is supported by the locking member 42 as shown in FIG. 5 by the foam. As shown in FIG. 6, it is moved upwards to be in contact with the first terminal 62 and the second terminal 64, which are the sensor member 60.

The first terminal 62 and the second terminal by the frame 52 or the connecting plate 58 of the moving member 50 made of a conductor material in contact with the first terminal 62 and the second terminal 64. (64) is energized to apply an electrical signal, thereby operating the valve connected to the water supply pipe (39) to flow the condensed water to the water supply pipe (39), the injection member mounted on one end of the connection member (72) 74) allow condensate to be injected.

Bubbles flowed back into the condensation duct 90 by the condensate water injected through the injection member 74 are removed, and the injection member (for a predetermined time even after the moving member 50 is separated from the sensor member 60) 74) allow condensate to be injected.

The dehydration stroke is suspended while the condensed water is injected through the injection member 74, or the dehydration stroke is simultaneously performed in consideration of the operation efficiency of the washing stroke.

The guide protrusion formed on the inner circumferential surface of the condensation duct 90 is inserted into the guide groove 59 of the movable member 50 when the movable member 50 moves up and down, so that the movable member 50 is parallel when the movable member 50 moves up and down. The moving member 50 is in contact with the sensor member 60 at an angle so as to prevent an abnormal operation of the foam sensor unit 40.

When the movable member 50 is in contact with the first terminal 62 and the second terminal 64 of the sensor member 60, according to the second embodiment of the present invention, without the configuration of the connecting plate 58 The first terminal 62 and the second terminal 64 are energized by the frame 52 made of a conductor material.

In addition, according to the third embodiment of the present invention, as shown in FIG. 8, the first terminal 62 and the second terminal 64 are energized by the disk 82 made of a conductive material. .

In addition, according to the fourth embodiment of the present invention, as shown in FIG. 9, the first terminal 62 and the second terminal 64 are formed by the original plate 82 and the connecting plate 88 made of a conductive material. Will be activated.

On the other hand, when the optical sensor 66 is used for the sensor member 60 in the fifth embodiment of the present invention, or the pressure sensor 68 is used for the sensor member 60 in the sixth embodiment of the present invention. In this case, the material of the moving members 50, 51, 80, 81 need not be conductive, but a light material in which the moving member 50 can be moved upward by a bubble is preferable.

As shown in FIG. 10, when the optical sensor 66 is used for the sensor member 60 in the fifth embodiment of the present invention, the movable member 50 moved upward by the bubble is a locking jaw 67. The upper side movement is limited by), and the upper side movement of the moving member 50 is sensed by the optical sensor 66 to operate the water supply unit 70.

As shown in FIG. 11, when the pressure sensor 68 is used for the sensor member 60 in the sixth embodiment of the present invention, the moving member 50 moved upward by the foam is the pressure sensor 68. The upper movement is limited by contact with the upper side of the moving member 50 is sensed to operate the water supply unit 70.

By the configuration of the foam sensor unit 40 and the water supply unit 70 according to the embodiment of the present invention as described above, the dewatering stroke is terminated in the state in which the bubble flowed back along the condensation duct 90 during the dewatering stroke is removed. .

And, if it has a drying stroke, the warm air heated by the heater by the blower operation is delivered to the inside of the tub along the drying duct 33 and the connection portion to dry the laundry, the relatively high temperature and high humidity air condensation duct ( Is moved upwards along 90).

At this time, the condensed water is injected from the injection member 74 of the water supply unit 70, the moisture in the hot and humid air in the condensation duct 90 is condensed to meet the condensed water to remove the air is dried duct again Supplyed to 33 and circulated, the laundry is dried.

The embodiments of the present invention as described above are not intended to limit the scope of the present invention, but are presented by way of example, and various embodiments may be applied within the spirit of the present invention.

As described above, according to the bubble removing structure of the drum washing machine according to the present invention, after sensing the bubble flowed back into the condensation duct by the bubble sensor unit to spray the condensed water through the water supply unit, the foam flows back along the condensation duct By preventing the washing, the operation of the laundry to smooth the flow of air moved along the condensation duct during the drying operation and condensation of moisture contained in the high temperature and high humidity air also provides an effect of improved operation reliability is improved. .

Claims (10)

In the drum washing machine having one end connected to the drying duct and the other end connected to the tub so that the air inside the tub is sucked into the drying duct, A foam sensor unit for sensing that the foam flows in the direction of the drying duct along the condensation duct; A water supply unit configured to spray condensed water into the condensation duct by a signal sensed by the foam sensor unit, The bubble sensor unit and the engaging member formed to protrude into the condensation duct; A moving member installed on the upper side of the locking member and floating upward by a bubble flowed back along the condensation duct, and prevented from being separated from the lower side by the locking member; It comprises a sensor member which is operated by the upward movement of the moving member to measure the generation of bubbles, The water supply unit is connected to the water supply pipe of the drum washing machine and the connection member receiving condensed water, The foam washing structure of the drum washing machine, characterized in that it comprises a spray member is mounted to one end of the connection member formed in the discharge hole on the lower side. delete The method of claim 1, wherein the moving member is a bubble washing structure of the drum washing machine, characterized in that the wire crosses the inner side of the frame made of a conductive material to form a ventilation hole. According to claim 1, wherein the moving member is a bubble washing structure of the drum washing machine, characterized in that a plurality of through-holes are formed in the inner plate made of a conductive material. The method of claim 1, wherein the moving member is connected to the plate is made of a conductive material across the central portion of the moving member is installed in contact with both sides of the sensor member in a straight line to remove the foam of the drum washing machine. According to claim 1, wherein the sensor member is a foam washing structure of the drum washing machine, characterized in that consisting of a pressure sensor protruding into the condensation duct so that the operation is made by contact by the upper movement of the moving member. The method of claim 1, wherein the sensor member is a foam washing structure of the drum washing machine, characterized in that the inner surface of the condensation duct protruding in a shape facing the terminal having a different polarity. According to claim 1, wherein the sensor member is a foam washing structure of the drum washing machine, characterized in that the optical sensor for sensing the upward movement of the moving member is installed toward the inside of the condensation duct. delete According to claim 1, wherein the guide groove is formed on the side of the moving member, the guide rail is protruded in the vertical direction on the inner surface of the condensation duct corresponding to the guide groove to guide the horizontal state during the vertical movement of the moving member Bubble washing structure of the drum washing machine characterized in that it is.

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