JPH0231875A - Ultrasonic wave washer - Google Patents

Abstract

PURPOSE:To surely wash dirt which is complex and difficult-to be removed in a short time by constituting the title washer so that a material to be washed is contained in a vessel in such a state that the material is immersed in liquid and ultrasonic wave energy is imparted to the liquid and the vessel is made airtight and the pressure of the inside is raised. CONSTITUTION:The materials 3 to be washed are contained in a vessel 1 so that these materials are immersed in liquid 4 and the vessel 1 is made to an airtight state. The pressure of the inside is raised at the prescribed value by feeding air into the vessel 1. When an ultrasonic wave oscillator 10 is actuated in this state, ultrasonic waves are generated from an ultrasonic wave vibrator 9 and the whole liquid 4 is vibrated with ultrasonic waves. Small flow is caused in the vicinities of the materials by formation of cavitation, effect due to bursting and vibration of the generated foams and the materials having a complex shape are surely washed. At this time, since the inside of the vessel 1 is held in a pressurized state, the pressure is imparted to the liquid incorporating air and the foams are taken off and cavibation threshold value is made large and both formation of cavitation and energy of bursting are made large in comparison with a time of normal pressures. Straight flow and this flow in liquid are made violent and thereby the materials can be easily washed in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an ultrasonic cleaning machine for cleaning objects to be cleaned using a cleaning liquid.

[Prior art] Conventionally, this type of ultrasonic cleaning machine tests and selects the optimal cleaning liquid for removing dirt from the object to be cleaned, then places the object to be cleaned in the cleaning liquid and irradiates it with ultrasonic waves. and cleaning.

[Problems to be Solved by the Invention] However, in the conventional apparatus, the cleaning power due to cavitation generation and rupture is insufficient to remove stains from the object to be cleaned, and a large portion of the cleaning is left to the cleaning effect of the cleaning liquid.

Therefore 1. There have been problems in that extra time is required to remove the stains, or depending on the type of stains, the stains cannot be completely removed and manual wiping is performed after cleaning.

The present invention has been made in order to solve the above-mentioned problems, and provides an ultrasonic cleaning machine that enhances the cleaning power of ultrasonic waves and can reliably clean complex and difficult-to-remove stains in a short time. With the goal.

[Means for Solving the Problems] In order to achieve this object, the present invention includes a container for storing an object to be cleaned immersed in liquid, and a container for applying ultrasonic energy to the liquid in the container. an ultrasonic generating means; a sealing means for keeping the inside of the container airtight;
and pressurizing means for increasing the internal pressure of the container.

[Function] With the above-described configuration, the present invention accommodates the object to be cleaned so that it is directly immersed in the liquid in the container, and in this state, the internal pressure is increased, and the air contained in the liquid is pressurized and air bubbles are removed. . Therefore, the cavitation threshold becomes higher and
When ultrasonic energy is applied to the liquid in this state, cavitation is generated and ruptured with high energy, and a high erosion effect can be obtained. Therefore, dirt adhering to the object to be cleaned can be effectively removed, and even if the object to be cleaned is a member with a complicated shape and dirt has adhered to its inner edges, etc., the dirt can be easily removed. It can be removed reliably in a short time.

[Embodiment] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

A container 1 of this ultrasonic cleaner is formed into a substantially box shape with an open top, and a flange 2 is provided protruding from the outer periphery of the top end. A plurality of objects 3 to be cleaned are housed in this container 1, and a cleaning liquid 4 is also housed therein, so that the objects 3 to be cleaned are immersed in the liquid 4. The lid 5 is mounted on the flange 2 of the container 1 via a gasket 6 so as to cover the upper opening of the container 1 in an openable and closable manner. A plurality of fasteners 7, which constitute a sealing means together with the lid 5 and the gasket 6, are attached across the outer peripheral edge of the lid 5 and the flange 2 of the container 1, and are attached to bolts 8.
By tightening, the lid body 5 is brought into close contact with the upper surface of the container 1, and the inside of the container 1 is maintained in an airtight state.

The ultrasonic vibrator 9 constituting the ultrasonic generating means is connected to the liquid 4.
attached to the lower surface of the lid 5 so as to be immersed in the
It is connected to an ultrasonic oscillator 10 provided outside the container 1. Then, as the ultrasonic oscillator 10 operates, ultrasonic waves are generated from the ultrasonic transducer 9, and the ultrasonic energy is applied to the liquid 4.

An air intake port 11 is formed in the lid 5 and is connected to an air compressor 13 as pressurizing means via an air pressure regulating valve 12. Then, a predetermined amount of air is supplied from the air compressor 13 into the container 1 according to the pressure adjustment of the air pressure regulating valve 12, and the inside of the container 1 is kept under pressure at a predetermined pressure of, for example, about 5 kgf/cm'. Ru.

Next, the operation of the ultrasonic cleaner configured as described above will be explained.

First, the object 3 that needs to be cleaned is washed with the liquid 4 in the container 1.
It is housed so that it can be directly immersed in water. Thereafter, the lid 5 is placed on the top of the container 1 through the gasket 6 to make the inside of the container airtight. Air is then supplied into the container 1 to increase the internal pressure of the container 1 to a predetermined value.

When the ultrasonic oscillator 10 is operated in this state, ultrasonic waves are generated from the ultrasonic vibrator 9 and the entire liquid 4 is ultrasonically vibrated. Then, due to the effects of the generation and bursting of cavitation based on this ultrasonic vibration and the vibration of the bubbles generated by the cavitation, a small flow is generated near the object placed in the liquid.

Therefore, even if the object to be cleaned has a complicated shape, it can be reliably cleaned if it is immersed in the liquid. At this time, since the inside of the container 1 is in a pressurized state, pressure is applied to the liquid containing air, which removes air bubbles and increases the cavitation threshold. Therefore, the energy of cavitation generation and rupture is greater than that under normal pressure, and the straight flow and flow in the liquid become more intense.
An object to be cleaned can be easily and reliably cleaned in a short time.

It should be noted that the present invention is not limited to the configuration of the embodiment described above, but may be configured such that ultrasonic vibrations are applied to the liquid 4 through the container 1. Further, a heating means such as a heater and a temperature sensor may be provided in the container 1 to control the liquid 4 to be maintained at a constant temperature to obtain an optimum cleaning state.

[Effects of the Invention] As is clear from the detailed description above, according to the present invention, by pressurizing the inside of the container, the energy of cavitation generation and bursting is increased, and the dirt on the object to be cleaned is removed. It has the excellent effect of being able to be removed easily, quickly and reliably.

[Brief explanation of the drawing]

The drawing is a sectional view showing an embodiment embodying the present invention. In the figure, 1 is a container, 2 is a flange, 3 is an object to be cleaned, 4 is a liquid, 5 is a lid, 6 is a gasket, 7 is a fastener that constitutes a sealing means together with the lid and gasket, and 8 is a bolt. , 9 is an ultrasonic vibrator as ultrasonic generating means, 10 is an ultrasonic oscillator, 11 is an air intake port, and 12 is an air pressure regulating valve.

Claims (1)

[Claims] 1. A container (1) that accommodates an object to be cleaned (3) immersed in a liquid (4), and applying ultrasonic energy to the liquid (4) in the container (1). an ultrasonic generating means (9) for maintaining the inside of the container (1), a sealing means (5, 6, 7) for maintaining the inside of the container (1) in an airtight state, and a pressurizing device for increasing the internal pressure of the container (1). Means (1
3) An ultrasonic cleaning machine characterized by comprising: