DE1924988A1 - Ultrasonic cleaning method and apparatus - Google Patents

Description

Dr. Ing. E. BERKENFELD · Dipl.-Ing. H. BERKENFELD, patent attorneys, Cologne

Attachment file number

zurΕίπφΐΐι. · v-j.il May 14, 1969 Sch. Named Note Blacicstone Corporation

Ultrasonic cleaning method and apparatus.

The present invention relates to an ultrasonic cleaning method and on a device »The objects to be cleaned are subjected to impact forces for cleaning according to the invention, while at the same time they are subjected to an ultrasonic action moving solvent can be immersed.

Cleaning baths moved by the action of ultrasound are already has been in use for a considerable time. For example, you clean all kinds of objects from grease and Dirt by placing it in solvent baths agitated by the action of ultrasound, e.g. baths with freon, and the like immersed. However, there are many cases where dirt removal is abnormal going slowly. This is especially true when the objects to be cleaned are tangled Have shape or are layered, such as ball and roller bearings, motor stands, armatures, transformer sheets and the like. In these cases, grease and fine-grained dust can only be removed with great difficulty using the known methods. This is because that the fat dissolves only slowly and that fine-grained dirt is mechanically held between closely spaced surfaces.

It has now been found that impact forces are associated with ultrasonic forces In the presence of common solvents, such objects can also be cleaned quickly and thoroughly, while none This means alone causes a thorough cleaning, without damaging the objects or using the detergents for an excessive amount of time get abandoned.

B 115/1

909848/1032

The objects to be cleaned are preferably subjected to impact forces while they are simultaneously immersed in a solvent moved by the action of ultrasound. Preferably, a solvent-containing tank is used, input _i directions in the tank, the action of ultrasound, the solvent by moving, further wherein a container is used which is immersed in the tank and carries the object to be cleaned, and piercing means are in the Tank provided that periodically bump against the container. A temperature regulator, which keeps the solvent at a set temperature, is preferably also arranged in the tank. In addition to the tank that contains the solvent, a steam wash tank is preferably also arranged. This tank has a vapor condenser that extends around both tanks and prevents the escape of solvent vapors.

In this foregoing general description of the invention, certain objects, purposes, and advantages are identified. Further Objects, purposes and advantages of the invention emerge in a Considering the following description and drawing, in which is:

Fig. 1 is a view of the device according to the invention removed cladding panels,

FIG. 2 shows a section along the section line II-II in FIG. 1 and

Fig. 3 is a plan view.

The drawing shows a housing 10, a detergent tank 11, next to it a steam cleaning tank 12 and a common one in between Wall 13 · In the bottom of the detergent tank 11 there is a submersible transformer 14. This transformer 14 is connected to an im Housing 10 arranged generator 15 connected. Heating devices 16 are provided in the detergent tank 11 and connected to a voltage source via lines 17 and 18. the Heating devices are controlled by a tank thermostat 19. A pump 20 is via a line 21 in which a filter 22 is located,

B 115/1 -2-

909848/1032

BATH ORIGINAL

connected to the bottom of the tank 11. The pump pushes solvent from the tank 11 via a manifold 23 and valves 24, 25 and 26 either in the cooling device 27 or in the Steam cleaning tank 12. The cooler 27 is circulating through Water cooled, which is introduced via a solenoid valve 28 at the cooling water inlet. The cooling water occurs again at outlet 29 the end.

The steam cleaning tank 12 is provided with a heater 30. This is via a safety reset thermostat at terminals 3I 32 connected to a voltage source.

A vertically displaceable vibrating table 33 is in the detergent tank 1I provided and in guides 34 on the side wall of the Tanks can be moved. The table is attached to a vertical via a hinge 35 slidable carriage assembly 36 connected, which is mounted on an air cylinder 37 and is actuated by this. The air cylinder 37 is attached to the housing 10 outside the tank 11. The air is sent to the air cylinder via a line 38 usual air filter 39 * a pressure regulator 40 and a cleaning device 41 supplied. The objects to be cleaned are placed in a basket 42 and in this in the solvent the detergent tank 11 is immersed. They are located above of the vibrating table 33

In operation, the objects to be cleaned are placed in the basket 42, which in turn is placed in the detergent tank 11 Solvent is immersed, which is at a certain temperature. The solvent is through the transmitter 14 set in motion, so that an ultrasonic cleaning effect arises. At the same time, the solvent is shaken by the air cylinder 37, which is operated cyclically and the carriage assembly 36 slides vertically up and down. This carriage arrangement carries with it the table 33, which strikes the basket 42 at the upper end of each stroke. This combination from shocks and from solvent moved by the action of ultrasound removes even the toughest grease very quickly and the toughest dirt.

B 115/1 -3- '

9 0 9848/1032

In summary, the invention thus relates to Cleaning of objects by immersing them in a solvent that simultaneously shocks and ultrasound is exposed. The device provided for this purpose contains a detergent pack for the solvent, facilities in the tank, that expose the solvent to ultrasound, and facilities in the tank that hold the items to be cleaned periodically while the solvent is swirled through by the ultrasound.

Claims

B 115/1

909848/1032

Claims (8)

Dr. Ing.E. 3ERKENFELD · Dipl.-lr.g. H. BERKENFELD, Patentanwälte, Cologne Attachment file number to the entry from May 14, 1969 Sch. Named. Note Blackstone Corporaetion Pate nt ana prtlche 1. A method for cleaning objects, characterized in that that the objects to be cleaned are cyclical and simultaneously moved by the action of ultrasound Exposed to solvents. 2. The method according to claim 1, characterized in that the solvent is maintained at a substantially constant temperature. J). Device for carrying out the method according to Claims 1 and 2 with a housing, characterized in that a detergent tank (11) which contains the solvent is provided in the housing (10). Devices in the detergent tank (11) which move the solvent with the action of ultrasound, a container (42) is immersed in the solvent and receives the objects to be cleaned, and a pushing device is provided in the tank (11) which is cyclically attached to the container (42 ) triggers. 4. Apparatus according to claim 3 * characterized in that in the tank (11) a heating device (16) for heating up the solvent is provided. 5. Apparatus according to claim 3, characterized in that in the housing (10) next to the detergent tank (11) a steam cleaning steam (12) is arranged. 6. Apparatus according to claim 3 * characterized in that the pusher a vertically movable vibrating table ^{B 113/1} 909848/1032 in the detergent tank (H), which is in its upper end position abuts the submerged container (42), an air cylinder (37) is connected to the table (33) to move it, and an air pressure source puts the air cylinder (37) into operation cyclically. 7. The device according to claim 3, characterized in that the device, which the solvent of the ultrasonic action exposing, is a transmitter (14) which is attached to the bottom of the detergent tank (11). 8. Apparatus according to claim 5 *, characterized in that a coolant coil runs along the top of the detergent tank (11) and the steam cleaning tank (12) extends. B 115/1 -6- 909848/1032