JPH0638950B2 - Ultrasonic cleaning tank - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an ultrasonic cleaning tank for cleaning a surface of an object to be cleaned immersed by using ultrasonic vibration generated in a cleaning liquid.

[Conventional technology]

For example, in a cleaning process in manufacturing electronic devices and precision devices, an ultrasonic cleaning tank is often used to clean various devices. A cleaning liquid such as various organic solvents is stored in this cleaning tank, and the cleaning power is enhanced by utilizing the cavitation phenomenon generated by the ultrasonic vibration generated in the liquid to clean the surface of the object to be cleaned.

[Problems to be Solved by the Invention]

Some of the above-mentioned cleaning tanks are those in which the object to be cleaned is simply immersed in the cleaning liquid, and those in which the cleaning power is increased by moving the object to be cleaned up and down in the liquid, etc. The tank had problems or requests described in (I) to (IV) below.

(I) Impurities such as microorganisms, fats and oils, chips, and the like liberated from the object to be cleaned float on the surface and reattach to the object to be cleaned when the object to be cleaned is lifted out of the liquid, which significantly impairs the improvement of the cleaning power.

(II) Depending on the cleaning liquid stored in the cleaning tank, there is a risk of ignition if heated directly.

(III) The cleaning liquid stored in the cleaning tank is easily vaporized and flows out of the tank. However, since the cleaning liquid poses a danger to humans, it is desirable to prevent the cleaning liquid from flowing out of the tank as much as possible.

(IV) In recent years, there has been a strong demand for improvement in cleaning power as various devices become smaller, thinner, and finer.

[Means for Solving the Problems]

The present invention proposes an ultrasonic cleaning tank in which the cleaning power is remarkably enhanced. It solves the above problems and accommodates an ultrasonic vibration source to which a jet means is connected to meet the demand, and stores the cleaning liquid. A cleaning tank, a heating tank that contains a heating source and stores a fluid to be heated, an injection unit that injects fluid from a large number of nozzles provided in a frame-like pipe, and a cooling pipe configured by multiple pipes, It consists of an exhaust duct in which a suction pipe is fixed to a part of a frame-shaped tubular body with a porous inner peripheral surface, and the upper end of the cleaning tank is sawtoothed so that the cleaning liquid in the tank overflows from the recess between adjacent sawtooths. The cleaning tank is arranged in the heated fluid of the heating tank, the injection means is arranged above the cleaning tank, and the cooling pipe is arranged above the injection means. , The exhaust duct is placed above the cooling pipe. It is.

[Action]

Impurities such as debris floating on the surface of the cleaning tank overflow from the upper part of the cleaning tank. Therefore, the cleanliness of the cleaning liquid in the cleaning tank is maintained high. A solvent that may be ignited by direct heating can be indirectly heated by a heating tank. Therefore, safety is enhanced. Impurities such as chips that reattach to the object to be cleaned when the object to be cleaned is lifted up from the liquid can be washed off by the jetting means. Most of the vaporized cleaning liquid, which has a harmful effect on the human body, is cooled by the cooling pipe and liquefied, and is stored again in the cleaning tank. The vaporized cleaning liquid which is not liquefied in the cooling pipe and further rises to flow out of the tank is collected by the exhaust duct.

〔Example〕

An embodiment of the ultrasonic cleaning tank according to the present invention is shown in FIG. 1 and FIG.
A description will be given below with reference to the drawings. In the ultrasonic cleaning tank (1) shown in the figure, (2) is a cleaning tank in which cleaning liquids (3) such as various organic solvents are stored, and the upper end portion has a sawtooth shape and adjacent sawteeth (2a) (2a) The cleaning liquid (3) in the tank overflows from the concave portion (2b) between them. At the time of this overflow, impurities such as microorganisms, fats and oils, chips, etc. floating on the surface of the object are simultaneously discharged. (4) is an ultrasonic vibration source housed in the inner bottom of the cleaning tank (2), and (5) is connected to the ultrasonic vibration source (4), causing ultrasonic vibration in the liquid to cause a cavitation phenomenon. A jet means for flowing the liquid, (6) is a box-shaped heating tank surrounding the cleaning tank (2), and the heated fluid (7) is stored between the cleaning tank (2) and the cleaning tank (2) and is arranged at the bottom. The cleaning liquid (3) in the cleaning tank (2) is indirectly heated by heating the fluid to be heated (7) by the heater (8) which is a heating source. (9) is an injection means arranged above the cleaning tank (2), which injects fluid from a large number of nozzles (9b) (9b) provided in the frame-shaped pipe (9a) and pulls up from the cleaning tank (2). The impurities redeposited on the cleaned object are washed away. (10) is a cooling pipe of multiple pipes arranged above the injection means (9) for cooling the vaporized cleaning liquid to liquefy it. (11)
Is an exhaust duct arranged above the cooling pipe (10), the inner peripheral surface of the frame tubular body (11a) is made porous, and the suction pipe (11b) is partially fixed, and the cooling pipe (10) is attached. The vaporized cleaning liquid that has passed and further rises to flow out of the tank is sucked and collected.
The bottom of the frame tubular body (11a) is inclined toward the suction pipe (11b) so that the liquefied cleaning liquid can be easily collected in the suction pipe (11b).

In the ultrasonic cleaning tank (1) having the above-mentioned configuration, as shown in FIG. 2, the object to be cleaned (12) is placed on the bracket (13) and immersed therein, and in this state cleaning is performed while moving up and down. Is done. In this cleaning, the object to be cleaned (12) is evenly cleaned by the vertical movement of the object to be cleaned (12), the cavitation phenomenon by the jet means (5), and the flow of the cleaning liquid to improve the cleaning power. Most of the impurities released during cleaning near the surface of the internal liquid overflow into the heating tank (6), but a slight amount of impurities remain in the liquid or on the surface of the liquid. ) May be redeposited when pulled up.
However, the impurities thus redeposited are completely washed off by the spraying means (9), so that a high cleaning power can be maintained.

〔The invention's effect〕

According to the ultrasonic cleaning tank of the present invention, the impurities floating on the liquid surface are overflowed to maintain high cleanliness of the cleaning liquid in the cleaning tank. The cleaning power is improved by uniformly cleaning the same, and the high removability is maintained by removing the impurities that reattach when the object to be cleaned is lifted from the cleaning tank by the spraying means. Also,
By heating the liquid to be heated in the heating tank with a heating source and indirectly heating the cleaning liquid in the cleaning tank, it is possible to prevent ignition of the cleaning liquid that may ignite if heated directly, which is extremely safe. . Further, the vaporized cleaning liquid which has a bad effect on the human body is cooled by the cooling pipe, liquefied and re-stored in the cleaning tank, and is further cooled without being cooled by the cooling pipe and tends to flow out of the tank. By being sucked and collected by the exhaust duct, the vaporized cleaning liquid is completely prevented from flowing out of the tank and does not endanger the human body. Therefore, it is possible to provide an ultrasonic cleaning tank which can significantly improve the cleaning power, can maintain the cleaning power, has high safety, and has an excellent effect of not causing a danger to the human body. .

[Brief description of drawings]

FIG. 1 is a perspective view of an ultrasonic cleaning tank according to the present invention, and FIG. 2 is a front sectional view. (1) ... Ultrasonic cleaning tank, (2) ... Cleaning tank, (3) ... Cleaning liquid, (4) ... Ultrasonic vibration source, (5) ... Jet flow means, (6) ... Heating tank, (8) ... Heating Source (heater), (9) ... injection means, (10) ... cooling pipe, (11) ... exhaust duct, (12) ... object to be cleaned.

Claims (1)

[Claims] 1. A cleaning tank for accommodating an ultrasonic vibration source to which a jet means is connected and accumulating a cleaning liquid, a heating tank for accommodating a heating source and accumulating a fluid to be heated, and a frame pipe. An injection means for injecting a fluid from a large number of nozzles provided, a cooling pipe composed of multiple pipes, and an exhaust duct in which an intake pipe is fixed to a part of a frame-shaped tubular main body whose inner peripheral surface is porous, The upper end of the cleaning tank is formed into a sawtooth shape so that the cleaning liquid in the tank overflows from the recess between the adjacent sawteeth, and the cleaning tank is arranged in the heated fluid of the heating tank,
Ultrasonic cleaning characterized in that the injection means is arranged above the cleaning tank, the cooling pipe is arranged above the injection means, and the exhaust duct is arranged above the cooling pipe. Tank.