JPS5839535Y2 - Record washer using ultrasonic vibrator - Google Patents

Description

[Detailed description of the invention] This invention is a device for cleaning records using an ultrasonic vibrator.

Conventionally, 7" shishi, cloth, wear-resistant type, spray, etc. have been used to remove dust and clumps from records, but all of them have been incomplete.

The reason is that there is a lot of dirt between the miso and the flat part of the record, and it is very difficult to simultaneously remove the dirt stuck inside the narrow miso and the dirt stuck to the flat part. In addition, the friction creates static electricity, which in turn creates a reaction that attracts dirt and grime.

Furthermore, although there are conventional washing machines that use ultrasonic waves, they all use only one ultrasonic vibrator, so records are subjected to uneven force no matter where they are placed in the liquid.

Since ultrasonic waves are waves, especially in liquid, the part facing the vibrator receives a very strong force.

Therefore, since the output of the vibrator cannot be increased in the above-mentioned conventional washer, even if a cleaning solution is used, both sides cannot be uniformly cleaned even if it takes a long time.

This idea was made to eliminate these shortcomings.The record is placed in the center of a pair of ultrasonic transducers with the vibrating surface facing the recording surface, and the dirt is sieved off under water, while at the same time the static electricity is neutralized with water. Let's try.

To explain the drawing, a container 1 is filled with water, the same ultrasonic transducer 22' is attached with the ultrasonic emitting surfaces facing each other, and a record 5 is rotatably held in the center by the support 4, and both recording boxes are Stand perpendicular to the water surface, facing the oscillator's radiation.

By applying a current of the same frequency and phase to the coil 33' that is tuned to the resonant frequency of the ultrasonic transducer 22', the record 5 receives the same vibration from both sides perpendicular to the recording surface, causing the record 5 to tilt to one side. It is possible to cleanse the inside of the miso without applying any force.

Then, by rotating the record 5 once around the support 4, both sides can be uniformly washed at the same time.

At this time, ultrasonic transducers 22' having the same resonance frequency are used, and the ultrasonic transducers 22' are arranged so that the ultrasonic wave emitting surface faces the recording surface and the distances therebetween are approximately equal.

The above structure is characterized in that if the vibrations are in the same phase, no biased force will be applied to the record even if strong vibrations are applied, and both sides will be able to move simultaneously and uniformly in a short period of time. Since it can be washed, all the drawbacks of the conventional method can be removed.

Furthermore, by changing the phase of both vibrators, it is possible to apply a strong cleaning force even with a very weak output.

In other words, by changing one phase of the excitation current applied to the coil 33' using the conventional method, the recorder 5 is brought into a state where it is shaken by both plate movers, making it possible to apply strong vibrations with a constant input tx. Therefore, it is also advantageous in terms of structure.

According to experiments, with the proposed structure, 50 W of 28.5 Hz pulse waves was applied to each vibrator, but no force was applied to the record to cause it to tip over, but compared to the conventional vibrator 1.
With these methods, it was impossible to increase the input power to 5W or more.

When the excitation method was used in which the phase of one of the vibrators was reversed, a sufficient cleaning effect was observed even with an input of about 1W.

These effects are due to the structure in which the record is placed between two opposing ultrasonic transducers, which is impossible with conventional methods.

[Brief explanation of the drawing]

The drawing is a cross-sectional view of the present invention. 1... Container, 22'... Ultrasonic vibrator, 33'... Coil, 4... Support column, 5...
·····record.

Claims (1)

[Scope of utility model registration request] Two ultrasonic transducers having the same resonant frequency are arranged in a container so that their vibrating surfaces face each other, and the record is placed in the center of the pair of ultrasonic transducers arranged oppositely. an ultrasonic record, which is arranged in a pair of ultrasonic transducers, is excited by applying an excitation current of the same phase and frequency to the pair of ultrasonic transducers, and is provided with a support for rotatably holding the transducers between the two transducers. Washer.