KR20080002464A - Device for exhausting form of drum washer - Google Patents

Abstract

A foam removing device for a front-loading washing machine is provided to discharge the foam lodged between a drum and a tub during a spin cycle by a control unit operating an air compressor to generate and store the compressed air in an air tank upon receiving a signal from a foam detecting sensor, and then closing a first pipe and opening a second pipe to send the compressed air into the tub. A foam removing device for a front-loading washing machine includes an air compressor(21). The air compressor is installed on an outer periphery of a tub(51) and generates the compressed air. An air tank(22) storing the compressed air is installed on an outer periphery of the tub. A first pipe(31) has a first opening and closing valve(31a) whose one end is connected to the air compressor and the other end is connected to the air tank. A second pipe(32) has a second opening and closing valve(32a) whose one end is connected to the air tank and the other end is connected to an opening(51a) disposed on the tub. A control unit(23) regulates the operation of the air compressor, the first and the second opening and closing valves. A water supply pipe(56) is connected to the tube and supplies the detergent or the water needed for washing. A first blocking plate(45a) is installed in the water supply pipe, which opens or closes the passage of the water supply pipe by the air pressure. A drying pipe(46) is connected to the tub, and supplies hot air into the tub. A second blocking plate(45b) opens or closes the path of the drying pipe by the air pressure. The first and second blocking plates are made of rubber materials. A sensor(44), which is disposed on an inner periphery of the tub, detects the presence of the foam between the tub and a drum and sends a signal to the control unit.

Description

Foam washing device for drum washing machine {DEVICE FOR EXHAUSTING FORM OF DRUM WASHER}

1 is a side cross-sectional view briefly showing a conventional drum washing machine.

Figure 2 is a side cross-sectional view showing a simplified drum washing machine according to the invention.

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

21: air compressor 22: air tank

23: control unit 31: the first building

32: 2nd Subsection 44: Sensors

The present invention relates to a drum washing machine, and more particularly, to a foam washing device of the drum washing machine for removing the foam formed between the drum and the tub to prevent the overload of the motor.

In general, in the drum washing machine, laundry and laundry are put in a drum in which the rotating shaft is horizontally disposed, and the laundry is washed without being tangled by the drum rotated by the driving of the motor.

1 is a side cross-sectional view briefly showing a conventional drum washing machine.

Referring to FIG. 1, a tub 11 having an open front surface is provided in a cabinet 10 forming an exterior, and the tub 11 is supported by a damper 12.

The tub 11 is provided with a drum 13 whose front face is opened to inject laundry, and the drum 13 is rotated in association with the motor 14.

The front of the cabinet 10 is provided with a door 15 to open and close the opened portion of the drum (13).

In order to supply the wash water to the tub 11, one end is provided with a water supply pipe 16 connected to an unshown water supply source and the other end connected to an upper portion of the tub 11, and the water supply pipe 16 includes a detergent container 17. Via.

In order to discharge the wash water stored in the tub 11, one end is connected to the bottom of the tub 11 and the other end is provided with a drain pipe 18 exposed to the outside of the cabinet 10, the drain pipe 18 is provided with a pump (19) ) Is built in to facilitate drainage.

On the other hand, the spacing between the tub 11 and the drum 13 is designed to minimize the amount of wash water.

However, when foaming by detergent occurs in the dehydration process, the foam is quickly introduced into the space between the tub and the drum.

These bubbles cause resistance to the drum that rotates at high speed, causing overloading the motor.

In addition, since such foam is not easily removed, there is a problem that the washing water for rinsing is increased.

Accordingly, the present invention has been made to improve the above problems, to remove the foam formed between the drum and the tub, to provide a foam discharge device of the drum washing machine so that the foam does not cause resistance to the drum. have.

The present invention for achieving the above object is an air compressor mounted on the outer peripheral surface of the tub to generate compressed air; An air tank mounted on an outer surface of the tub to store compressed air; A first pipe having one end connected to the air compressor, the other end connected to the air tank, and having a first opening / closing valve for opening and closing a passage; A second pipe having one end connected to the air tank, the other end connected to an opening hole formed in the tub, and having a second open / close valve for opening and closing a passage; And a controller for controlling the air compressor and the first and second opening / closing valves.

In the present invention further comprises a water supply pipe in communication with the tub to supply detergent or wash water, wherein the water supply pipe is provided with a first blocking plate for opening and closing the passage by air pressure.

In the present invention further comprises a drying tube in communication with the tub to supply the heated air, the drying tube is characterized in that the second blocking plate is provided with a passage opening and closing by the air pressure.

In the present invention, the blocking plate is characterized in that molded in a rubber material.

In the present invention, the inner circumferential surface of the tub is characterized in that it further comprises a sensor for measuring the presence of foam to send a signal to the controller.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the drum washing machine having a bubble discharge device according to the present invention.

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 later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom.

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

Figure 2 is a side cross-sectional view showing a simplified drum washing machine according to the invention.

Referring to FIG. 2, a tub 51 is built into the cabinet 20 of the drum washing machine, and the tub 51 is provided with a drum 53 that rotates in association with the motor 54.

An air compressor 21 is installed on the outer circumferential surface of the tub 51, and the air compressor 21 generates compressed air.

The air compressor 21 may drive compressed motors (not shown) to drive compressed motors to generate compressed air. In addition, the air compressor 21 may use various components capable of generating compressed air.

The outer circumferential surface of the tub 51 is provided with an air tank 22, the air tank 22 serves to store the compressed air, is installed in close proximity to the air compressor (21).

The first pipe 31 and the second pipe 32 are provided to guide the air generated by the air compressor 21 to the tub 51.

One end of the first pipe 31 is connected to the air compressor 21 and the other end is connected to the air tank 22. The first pipe 31 has a first opening and closing for opening and closing the passage of the first pipe 31. The valve 31a is provided.

The second pipe 32 has one end connected to the air tank 22 and the other end connected to a tub 51 having an opening hole 51a. The second pipe 32 has a passage of the second pipe 32. A second open / close valve 32a is provided for opening and closing.

The air compressor 21 and the first and second open / close valves 31a and 32a are controlled by the controller 23.

On the other hand, the tub 51 is a plurality of pipes in addition to the second pipe (32) is in communication.

That is, a water supply pipe 56 for introducing wash water or detergent, a drying pipe 46 for drying the laundry by flowing air heated by the heater, and a drain pipe 58 for discharging the laundry to the outside are provided.

The water supply pipe 56 and the drying pipe 46 communicate with an upper side of the tub 51, and the drain pipe 58 communicates with a lower side of the tub 51.

When the air pressure is injected from the second pipe 32, bubbles should be discharged to the drain pipe 58. If the water supply pipe 56 and the drying pipe 46 are open, the air pressure decreases.

Therefore, the water supply pipe 56 is provided with a first blocking plate 45a, and the drying pipe 46 is provided with a second blocking plate 45b, wherein the first and second blocking plates 45a and 45b are air pressure. To close the passageway.

To this end, each of the first and second blocking plates 45a and 45b is fixed to the inside of the tube and has an inclination to move the inside of the tube while the heated air or the washing water is pushed. desirable.

On the other hand, the inner peripheral surface of the tub 51 is provided with a sensor 44 for measuring the presence of foam, the sensor 44 sends a signal to the controller 23 when the bubble is measured.

Referring to the operation of the drum washing machine having a structure as described above for the bubble discharge device as follows.

In the dehydration process after washing, foam is formed between the drum 53 and the tub 51, and the sensor 44 recognizes the foam and sends a signal to the controller 23.

Then, the control unit 23 causes the second opening and closing valve 32a to close the second pipe 32 and then drives the air compressor 21 to accumulate air in the air tank 22.

In the above state, the second open / close valve 32a opens the second pipe 32 while driving the first open / close valve 31a to close the first pipe 31.

Then, the compressed air is introduced into the tub 51 to discharge the foam formed between the tub 51 and the drum 53 to the drain pipe (58).

At this time, the water supply pipe 56 and the drying pipe 46 are provided with first and second blocking plates 45a and 45b, respectively, and part of the compressed air introduced into the tub 51 is the water supply pipe 56 and the drying pipe 46. Inflowing to the), the inclined first and second blocking plates 45a and 45b are pushed to close the water supply pipe 56 and the drying pipe 46.

This prevents the compressed air from leaking to the outside, and the compressed air quickly discharges the bubbles into the drain pipe 58.

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.

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

As described above, the foam discharge device of the drum washing machine according to the present invention has an effect of quickly removing the foam when the foam is formed between the tub and the drum unlike the conventional invention.

Due to the defoaming, there is an effect of preventing the overload of the motor or the dehydration time delay caused by the contact of the drum and the foam in the dehydration process.

Claims (5)

An air compressor mounted on an outer circumferential surface of the tub to generate compressed air; An air tank mounted on an outer surface of the tub to store compressed air; A first pipe having one end connected to the air compressor, the other end connected to the air tank, and having a first opening / closing valve for opening and closing a passage; A second pipe having one end connected to the air tank, the other end connected to an opening hole formed in the tub, and having a second open / close valve for opening and closing a passage; And And a control unit for controlling the air compressor and the first and second opening / closing valves. The method of claim 1, Further comprising a water supply pipe in communication with the tub to supply detergent or wash water, The water supply pipe is a foam washing apparatus of the drum washing machine, characterized in that the first block is provided with a passage opening and closing by air pressure. The method of claim 1, Further comprising a drying tube in communication with the tub for supplying heated air, The drying pipe is a foam discharge device of the drum washing machine, characterized in that the passage is provided with a second blocking plate opening and closing the passage. The method of claim 2 or 3, The blocking plate is a foam discharge device of the drum washing machine, characterized in that molded in a rubber material. The method of claim 1, The inner circumferential surface of the tub is a bubble washing apparatus of the drum washing machine characterized in that it further comprises a sensor for measuring the presence of foam to send a signal to the controller.

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