KR19980037004A - Washing machine with ultrasonic device - Google Patents

Abstract

The present invention relates to a washing machine with ultrasonic waves.

According to the present invention, a washing tank 12 having a pulsator 16 is rotated by a motor 15 in a dehydration tank 13 of a fixed structure, and performs a washing operation: an outer surface of the dehydration tank 13. A vibrator 24 fixed to and generating ultrasonic waves having a predetermined frequency; An ultrasonic oscillator 23 generating a signal oscillated at a predetermined frequency and sending the signal to the vibrator 24; And a plurality of upper control rods 21 and lower control rods 22, each of which is fixed to a predetermined length on the door 11 and the washing tub 12, is made of a hard material having corrosion resistance.

Accordingly, the present invention has an effect of improving the washing power while minimizing damage to the laundry by generating micro bubbles instead of the coercive force by adding the ultrasonic apparatus of the automatic washing machine to sequentially perform a series of operations.

Description

Washing machine with ultrasonic device

The present invention relates to a washing machine having an ultrasonic device, and more particularly, to a washing machine having an ultrasonic device which improves washing power while minimizing damage to laundry by adding a predetermined device for forming micro bubbles instead of coercive force in a fully automatic washing machine. will be.

Referring to FIG. 1, a washing machine generally includes a washing tank 12 and a dehydrating tank 13 therein. The main components such as the discharge water pipe are connected to each other and the clutch motor composed of the motor 15 and the gear clutch 14 belt driven therewith is used as a power source.

When the user puts laundry into the washing tank 12 and operates a switch, washing water and detergent are added to the washing, and the gear clutch 14 and the motor 15 rotate the washing tank 12 intermittently to dehydrate the laundry. A series of operations takes place sequentially.

On the other hand, in recent years, a variety of devices have appeared in accordance with the trend of increasing the size and high quality of home appliances, the bottom of the washing tank 12 may have a rotating pulsator 16 device having a wing shape, the washing tank 12 In the upper part, a shower nozzle (not shown) having a water spray nozzle function is installed, and the washing water is spouted through a separate shower water pipe.

The former mainly serves to increase the washing power, and the latter mainly serves to improve the rinsing power.

In addition, the recent air bubble generation washing machine for improving the washing power to accelerate the saponification of the water by flowing air bubbles intermittently during washing using a diaphragm pump (not shown).

Further, in the washing machine having the pulsator 16, the washing water flowing out through a myriad of holes formed in the wall surface of the washing tank 12 is washed along the dewatering channel formed between the washing tank 12 and the dewatering tank 13. There is also a case of circulating back to the washing tank 12 through the bottom or the pulsator 16, mainly used for the purpose of preventing tangling of the laundry during the washing process.

In addition, various means for increasing the washing power have been introduced, but rather than an effort to improve the saponification action between the laundry and the wash water has been a result of increasing the damage to the laundry by providing a direct physical force to the laundry.

For example, when installing a laundry rod (not shown) that moves up and down in the center of the washing tank 12, the washing force is slightly increased, but there is a fear that the laundry may be damaged due to the impact caused by the laundry rod.

On the other hand, a heater (not shown) may be provided in the channel between the washing tank 12 and the dehydrating tank 13 to improve the washing power without physically damaging the laundry. Heating washing water by a heater promotes saponification, and boils the laundry to increase cleanliness.

On the other hand, since it takes a relatively long time to increase the temperature to the boiling point of the washing water at room temperature, washing time and power consumption is increased, there is a disadvantage that requires attention to discharge treatment hot water.

Accordingly, the present invention is to propose a means for solving the above problems, damage to the laundry by adding a predetermined device for forming a fine bubble instead of the coercive physical force in the automatic washing machine that performs a series of operations sequentially It is an object of the present invention to provide a washing machine with an ultrasonic device to improve the washing power while minimizing the amount.

1 is a configuration diagram showing an arrangement of main parts of the washing machine according to the present invention;

Figure 2 is a plan view showing the interior of the dehydration tank in the state of opening the door of Figure 1;

Explanation of symbols on the main parts of the drawings

11 door, 12 washing tank, 13 dehydration tank,

14, gear clutch, 15: motor, 16: pulsator,

21: upper control rod, 22: lower control rod, 23: ultrasonic oscillator,

24: vibrator, 31: body, 32: coil,

33: permanent magnet.

In order to achieve this object, the present invention provides a washing machine in which a washing tank (12) having a pulsator (16) is rotated by a motor (15) in a dehydrating tank (13) of a fixed structure, and performs washing. A vibrator 24 fixed to an outer surface of the light source 13 and generating ultrasonic waves having a predetermined frequency; An ultrasonic oscillator 23 generating a signal oscillated at a predetermined frequency and sending the signal to the vibrator 24; And a plurality of upper control rods 21 and lower control rods 22, each of which is fixed to a predetermined length on the door 11 and the washing tub 12, and is made of a hard material having corrosion resistance. It provides a washing machine with.

At this time, the vibrator 24 is made of a body 31, a coil 33, a permanent magnet 33, and the like, and uses a ferrite vibrator having high insulation resistance and almost no eddy current loss up to high frequencies.

In addition, the ultrasonic oscillator 23 generates ultrasonic waves in the range of 15 to 50 kHz to facilitate the formation of microbubbles by cavitation in the wash water as a medium.

EXAMPLE

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

1 is a block diagram showing the arrangement of the main part of the washing machine according to the present invention.

The present invention is a washing machine 12 having a pulsator 16 is rotated by a motor 15 in a dehydration tank 13 of a fixed structure, the washing machine in the washing operation, the oscillator 24, ultrasonic oscillator 23 ), The upper control rod 21, the lower control rod 22 and the like is applied.

The configuration and operation of the main functional parts such as the washing tank 12, the dehydration tank 13, and the pulsator 16, and the configuration and operation of the driving parts such as the motor 15 and the gear clutch 14 are the same as in the prior art.

At this time, according to the present invention, the vibrator 24 is fixed to the outer surface of the dehydration tank 13 and generates ultrasonic waves having a predetermined frequency.

The vibrators are classified into piezoelectric vibrators, polarized vibrators used by polarizing magnetism such as barium titanate, and magnetostrictive vibrators that superimpose a direct current field and a high frequency magnetic field on nickel, ferroferrite, and the like using a single crystal such as a crystal.

Piezoelectric phenomena and electric and magnetostrictive phenomena are physically different, but their practical application is almost the same. In general, piezoelectric and total distortion oscillators are used at high frequencies of 400 Hz or more, and magnetostrictive vibration differences are used at low frequencies of 50 Hz or less.

In addition, the present invention uses an ultrasonic oscillator 23 for generating a signal that is oscillated at a predetermined frequency and sends it to the vibrator (24).

The application of ultrasonic waves can be roughly divided into communication and dynamic applications. The former generally uses higher frequency than sound pressure (for example, 500 Hz or more), and the latter uses ultrasonic waves as energy, as in the case of the present invention. Use a relatively strong sound pressure and a low frequency to facilitate cavitation in the fluid.

At this time, the ultrasonic oscillator 23 generates ultrasonic waves in the range of 15 to 50 Hz to facilitate the formation of micro bubbles by cavitation in the wash water as a medium.

The oscillation method includes a self-oscillation method, a MOPA method, a vibration feedback method, and the like. In the case of the purpose of cleaning in a liquid as in the present invention, since the impedance change of the vibrator 24 is small and the stability of the oscillation frequency is not a problem, It doesn't matter how you do it. In this case, self-excited method or MOPA method is mainly used.

On the other hand, in the case of using the cavitation of the fluid from the side of the dynamic application, the intensity of the sound should be 3.5 kW / ㎡ or more, but usually about 50 ~ 100kW / ㎡ is used a lot.

In addition, the present invention includes a plurality of upper control rods 21 and lower control rods 22, each of which is fixed to a predetermined length on the door 11 and the washing tub 12, and is made of a hard material having corrosion resistance.

Since the cavitation action by the ultrasonic wave easily occurs in a hard material, the upper control rod 21 and the lower control rod 22 use SUS material. The control rods 21 and 22 are inserted at appropriate intervals between the laundry in the state in which the door 11 is closed, so that fine air bubbles (aka micro bubbles) formed by cavitation are transmitted to the laundry.

The foreign matter or time of the laundry is easily separated by the breaking action and the vibration action of the micro bubble, so when the upper control rod 21 and the lower control rod 22 are not used, the generation efficiency of the micro bubble is low and the washing effect is low.

Figure 2 is a plan view showing the interior of the dehydration tank with the door of Figure 1 open.

The vibrator 24 of the present invention is installed at at least two opposing locations as shown in the figure, and the lower control rod 22 is installed to be evenly distributed in the washing tank 12 without interfering with the pulsator 16.

At this time, the vibrator 24 is made of a body 31, a coil 33, a permanent magnet 33, and the like, and uses a ferrite vibrator having high insulation resistance and almost no eddy current loss up to high frequencies.

Generally, ferrite refers to ferrite, which is sintered at high temperature by mixing iron oxide powder with oxide powders such as Fe, Ni, Co, Cu, Mg, Mn, and Ba. Two kinds (or forks) are used. Type II is suitable for the present invention because the body 31 can be mounted after winding the coil 33 to other bobbins and is easy to manufacture.

Permanent magnet 33 is fixed to the lower end of the body 31 has the advantage of using a barium ferrite system and do not need to provide a separate DC power source. While the electro-acoustic conversion efficiency of the metal magnetostrictive vibration difference is about 60%, the ferrite vibration difference can reduce the capacity of the ultrasonic oscillator 23 (Fig. 1) because the electro-acoustic conversion efficiency is about 95%.

In addition, since the change efficiency is good, there is little loss, and there is no need for a separate cooling device.

The ferrite vibrator is a kind of porcelain material unlike the metal magnetostrictive vibrator, so it is necessary to pay attention to cracks due to brittleness, but in the case of underwater radiation, it is possible to output about 100 kW / m 2, so that the cavitation and microbubbles according to the present invention can be obtained. Can be generated.

As described above, the washing machine having the ultrasonic apparatus of the present invention adds the ultrasonic apparatus of the fully automatic washing machine to sequentially perform a series of operations, thereby generating a micro bubble instead of the coercive physical force, thereby minimizing damage to the laundry and improving the washing force. There is.

While the invention has been shown and described with reference to certain preferred embodiments, it will be understood that the invention can be variously modified and modified without departing from the spirit or scope of the invention as set forth in the claims below Those skilled in the art can easily know that.

Claims (3)

In a washing machine 12 having a pulsator 16 is rotated by a motor 15 in a dehydration tank 13 of a fixed structure and washes: A vibrator 24 fixed to an outer surface of the dehydration tank 13 to generate ultrasonic waves having a predetermined frequency; An ultrasonic oscillator 23 generating a signal oscillated at a predetermined frequency and sending the signal to the vibrator 24; And Each of the upper and lower control rods 21 and 22 is fixed to a predetermined length on the door 11 and the washing tub 12 and made of a hard material having corrosion resistance. washer. The method of claim 1, The vibrator 24 is composed of a body 31, a coil 33, a permanent magnet 33, and the like, an ultrasonic device using a ferrite vibrator having a high insulation resistance and almost no eddy current loss up to high frequencies Washing machine with. The method of claim 1, The ultrasonic oscillator 23 is a washing machine having an ultrasonic device, characterized in that for generating ultrasonic waves in the range of 15 ~ 50 kHz to facilitate the formation of micro bubbles by cavitation in the wash water as a medium.