JP5273534B2 - Dry cleaning apparatus, cleaning method, and cleaned items - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently removing powder dust and foreign matter adhering or firmly stuck to various kinds of objects to be cleaned having aperture parts by cleaning. <P>SOLUTION: High speed air current is generated by a cleaning medium accelerating nozzle 11 in a state that air in a cleaning tank 7 is suctioned: and a flaky cleaning medium 6 is made to fly and the flying direction of the cleaning medium 6 flown to the aperture parts 24 of objects to be cleaned 5 is changed by cleaning medium flying direction control means 25 to hit the cleaning medium 6 against sides of the aperture parts 24 of the objects to be cleaned 5 and thus reliably clean the inner faces of the aperture parts 24 of the objects to be cleaned 5. A jetting port 26 for jetting an air current toward the inner faces of the aperture parts 24 of the objects to be cleaned 5 is formed in the cleaning medium flying direction control means 25 to accelerate the flying cleaning medium 6 in the direction to the inner faces of the aperture parts 24. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to, for example, flux adhered to a mask jig used in a soldering process for mounting electronic parts used in various electric devices or the like on a printed wiring board, and dust adhered to or fixed to an object to be cleaned having various openings. The present invention relates to a dry cleaning apparatus and a cleaning method for removing odors and foreign matters, and improvement in removal efficiency of a cleaned object to be cleaned, particularly flux adhered to an inner surface of an opening of an object to be cleaned.

  In recent years, a mask jig called a dip pallet, a carrier pallet, or the like that masks a region other than a region to be soldered is frequently used in a soldering process using a flow solder bath in printed circuit board manufacturing. Such a mask jig needs to be periodically cleaned in order to reduce the accuracy of the mask by depositing and fixing flux on the surface as it is repeatedly used.

  Thus, in order to clean the cleaning object such as a jig to which a flux, an adhesive material, an adhesive or the like adheres, the cleaning device disclosed in Patent Document 1 uses a solvent cleaning tank to apply a solvent to the upper and lower surfaces of the cleaning object. After spraying and cleaning, the solvent adhering to the object to be cleaned is washed with water in the water washing and washing tank, and hot air is blown against the object to be washed in the drying tank and dried.

  When a cleaning device using such a solvent is used for cleaning an object to be cleaned, on which flux or the like is adhered, a large amount of solvent is used and energy consumption in the treatment of waste liquid containing flux and the drying process after cleaning is reduced. There is a problem that the environmental load is large and the cost is high. In addition, the load on the worker was extremely large.

  In order to solve these problems, in the dry cleaning method disclosed in Patent Document 2, a high-speed air flow is caused to flow in the cleaning tank, and a cleaning medium made of a lightweight and easy-to-fly solid is allowed to fly at high speed in the cleaning tank. The cleaning medium is continuously brought into contact with the object to be cleaned to separate dust and powder adhering to the object to be cleaned. In particular, by using a flaky cleaning medium having flexibility, a cleaning ability equivalent to or higher than that of ultrasonic cleaning can be exhibited with a small amount of the cleaning medium used.

  For example, in a cleaning apparatus that cleans an object to be cleaned that is larger than the cleaning tank using the dry cleaning method disclosed in Patent Document 2, for example, as shown in FIG. 10, the openings of the object to be cleaned 5 having many openings 24. 24 is covered with a sealing member 40 and disposed in the opening of the cleaning tank 7, and the cleaning medium 6 is made to fly by the high-speed air current sprayed from the cleaning medium acceleration nozzle 11 of the cleaning tank 7 to come into contact with the cleaning object 5 and cleaned. Then, since the cleaning medium 6 is accelerated in the direction of the opening 24, it does not easily collide with the inner surface of the opening 24, the cleaning speed of the inner surface of the opening 24 is slow, and cleaning unevenness occurs. When cleaning unevenness occurs in this way, for example, when a mask jig having many openings is cleaned in the soldering process, the cleaning is insufficient and sticking dirt remains in the vicinity of the openings. The degree of adhesion decreases and solder and flux leak to the printed wiring board side.

In order to solve such a problem, the cleaning apparatus shown in Patent Document 3 changes the jet direction of the gas jetted into the cleaning tank when the cleaning medium is jetted with the gas to clean the cleaning object. It is rocking. In order to oscillate the gas jet direction, two control jet nozzles are provided in the vicinity of the main jet nozzle, and the jet direction is controlled by jetting gas alternately from each control jet nozzle. Thus, the object to be cleaned having a complicated shape is cleaned evenly.
JP-A-5-299821 JP 2007-29945 A Japanese Patent No. 4049290

  However, as shown in FIG. 10, even if the control nozzle 41 is provided in the vicinity of the cleaning medium acceleration nozzle 11 for accelerating the cleaning medium and the jet direction of the gas is swung, the cleaning medium 6 is removed from the cleaning medium acceleration nozzle 11. Immediately, it flew upward while being swung left and right, and depending on the depth of the opening 24 of the object 5 to be cleaned, there was a region where the cleaning medium 6 did not collide, and the cleaning ability was limited. Further, in the area other than the opening 24, there is a problem that the incident angle of the cleaning medium 6 with respect to the area becomes large, the energy with which the cleaning medium 6 collides becomes small, and the cleaning performance is likely to deteriorate.

  The present invention solves such a problem, and is capable of efficiently cleaning dust and foreign matters adhering or adhering to an object to be cleaned having various openings, and a cleaning method and a cleaning method using the same. The object is to provide a cleaned product.

Dry cleaning apparatus of this invention is a dry type cleaning apparatus for cleaning by colliding the cleaning object having one or more openings flaky cleaning medium flowing by high-speed air stream, fixed to the object to be cleaned by having a return means opening the sealing member and the cleaning tank and the cleaning target object holding means and the cleaning medium to seal the opening, the cleaning tank, while having an opening, the gas on the wall surface and dust A cleaning medium separating means that allows the cleaning medium to pass through, but has a cleaning medium accelerating means that accelerates the cleaning medium in the direction of the opening, and the cleaning medium returning means passes through the cleaning medium separating means. A suction device connected to the cleaning tank, and a cleaning medium decelerating unit that is provided on an outer edge of the opening of the cleaning tank and that holds the cleaning object holding unit to form a gas inflow passage at a predetermined interval. The sealing member determines the flight direction of the cleaning medium. A cleaning medium flying direction control means for switching, wherein the cleaning object holding means holds the cleaning object to which the opening sealing member is fixed, and is movable along the cleaning medium deceleration means. Features.

  The cleaning medium flying direction control means has an injection port for injecting an air flow toward the inner surface of the opening.

  Further, the cleaning medium flying direction control means has an injection port for injecting an airflow inclined at a predetermined angle with respect to the inner surface of the opening. The cleaning medium flying direction control means is preferably rotatable.

  Further, it is preferable that pressurized air is supplied to the cleaning medium flying direction control means so that an air flow is ejected from the ejection port.

  Further, the cleaning medium flying direction control means includes a flow control plate that corrects the direction of the air flow generated by the cleaning medium acceleration means in a direction toward the inner surface of the opening.

  The cleaning method of the present invention is a cleaning method using any one of the dry cleaning apparatuses described above, wherein a high-speed air current is generated by the cleaning medium accelerating means in a state where the air in the cleaning tank is sucked, and The cleaning medium flying direction control means is used to switch the flying direction of the cleaning medium, which has been ejected by the cleaning medium, and washed to the opening of the cleaning object, thereby cleaning the inner surface of the opening of the cleaning object.

  The washed product of the present invention is characterized by being cleaned using any of the dry cleaning apparatuses described above.

  This invention generates a high-speed air flow while sucking the air in the cleaning tank, and causes the cleaning medium to fly by switching the flying direction of the cleaning medium that has jumped to the opening of the object to be cleaned. By colliding with the side surface of the opening of the object to be cleaned and cleaning, the inner surface of the opening of the object to be cleaned can be reliably cleaned.

  Also, by providing the cleaning medium flying direction control means with an injection port for injecting an air flow toward the inner surface of the opening of the object to be cleaned, the flying cleaning medium can be accelerated toward the inner surface of the opening, and the inner surface of the opening is cleaned. The medium can collide to remove the dirt. In addition, since the cleaning medium can be accelerated without contact, the cleaning medium can be prevented from being damaged.

  Further, since the cleaning medium flying direction control means is provided with an injection port for injecting an airflow inclined at a predetermined angle with respect to the inner surface of the opening, a thrust for rotating the cleaning medium flying direction control means can be generated. Without providing, the entire inner surface of the opening of the object to be cleaned can be cleaned.

  Furthermore, by making the cleaning medium flying direction control means having an injection port for injecting an airflow directed toward the inner surface of the opening of the object to be cleaned, the entire circumference of the inner surface of the opening can be more reliably cleaned with the cleaning medium. it can.

  Further, the cleaning medium flying direction control means is provided with a flow control plate that corrects the direction of the air flow generated by the cleaning medium acceleration means to the direction toward the inner surface of the opening. And the inner surface of the opening can be efficiently cleaned.

  Since the cleaning object cleaned with the dry cleaning apparatus of the present invention is also cleaned reliably on the inner surface of the opening, it can be reused repeatedly while maintaining its performance reliably even if used as a mask member, etc. Resources can be used effectively.

  1A and 1B show a mechanical configuration of a dry cleaning apparatus according to the present invention, in which FIG. 1A is a front sectional view, FIG. 1B is a sectional view taken on line AA of FIG. 1A, and FIG. The dry cleaning apparatus 1 includes a cleaning tank unit 2, a cleaning object holding means 3, and an opening sealing member 4, and the cleaning object held by the cleaning object holding means 3 as shown in the partial enlarged sectional view of FIG. The dust adhering to the object 5 is removed by the cleaning medium 6 flying by the high-speed air current.

  The cleaning medium 6 used in the dry cleaning apparatus 1 is a hard and durable material such as polycarbonate or PET and has a thickness of, for example, 0.1 to 0.2 mm and a side size of 5 to 10 mm. It is formed with a square-shaped flake. Depending on the cleaning object 5, it may be effective to change the size and material of the cleaning medium 6, and an appropriate condition is selected according to the cleaning object 5 without being limited by the above conditions.

  Thus, when the force of the airflow acts in the direction where the projected area is large, the flaky cleaning medium 6 is easily accelerated by the airflow and flies at high speed because the mass against the air resistance force is very small. In addition, the air resistance is small in the direction in which the projected area is small, and high speed movement is maintained for a long distance when flying in that direction. For this reason, the energy of the cleaning medium 6 is large, the force acting when the cleaning medium 5 comes into contact with the cleaning medium 5 is increased, and the adhered deposits can be effectively removed and the cleaning medium 6 is repeatedly circulated to be cleaned. The frequency of contact with the object 5 can be increased, and the cleaning efficiency can be increased.

  In addition, since the air resistance of the flake-like cleaning medium 6 varies greatly depending on the posture, the cleaning medium 6 not only moves along the airflow but also suddenly changes its direction and repeatedly contacts the object 5 to be cleaned. The cleaning efficiency of the cleaning object 5 having a complicated shape can be increased.

  The cleaning tank unit 2 has a cleaning tank 7 and a cleaning medium return means 9. The cleaning tank 7 is formed in, for example, a semi-cylindrical shape, a rectangular shape, or a pyramid shape that is sealed on both sides, and has an opening in the upper part. The cleaning medium separating means 10 has a large number of small holes and slits through which the cleaning medium cannot pass, and the cleaning medium acceleration means 8 for accelerating the cleaning medium 6 in the direction of the opening.

  The cleaning medium accelerating means 8 includes a cleaning medium accelerating nozzle 11 having a plurality of ejection ports and a compressed air supply device 12 made of, for example, a compressor. The cleaning medium accelerating nozzle 11 is provided through the cleaning tank 7 with a plurality of ejection openings arranged in a straight line along the center of the bottom surface of the cleaning tank 7. The compressed air supply device 12 supplies compressed air to the cleaning medium accelerating nozzle 11 via an air supply pipe 14 having a control valve 13 and causes the cleaning medium 6 to fly at high speed.

  The cleaning medium return means 9 includes a suction duct 15 connected to the cleaning medium separation means 10 of the cleaning tank 7, a suction device 16, and a cleaning medium speed reduction member 17. The suction device 16 conveys air, dust, and the like sucked into the suction duct 15 through the small holes and slits of the cleaning medium separating means 10 through the suction pipe 18. The suction device 16 has a performance that sucks a sufficient flow rate compared to the flow rate of the compressed air flowing out from the cleaning medium acceleration nozzle 11 and makes the inside of the cleaning tank 7 have a negative pressure. The cleaning medium deceleration member 17 has a fixed length and is formed in a concave shape, and is provided on both sides of the cleaning tank 7. A square columnar linear guide 20 having a thickness of, for example, about 5 mm is provided at the corner of the upper surface of the horizontal laminar flow forming surface 19 of the cleaning medium deceleration member 17. This linear guide 20 is formed of a material having a smooth surface, for example, a fluororesin, holds the cleaning object holding means 3, and guides the movement of the cleaning object holding means 3 together with the parallel side guides 21 of the cleaning medium reduction member 17. To do. The gap 22 between the horizontal upper surface of the laminar flow forming surface 19 formed by the linear guide 20 and the cleaning object holding means 3 is not squeezed by the cleaning medium 6 and the inflowing air flow is sufficiently large. Well, an appropriate condition is selected according to the size of the cleaning medium 6 regardless of the above condition.

  The cleaning object holding means 3 has a plate shape having a length larger than the length of the cleaning object 5 and has a concave shape that matches the shape of the cleaning object 5 with the opening sealing member 4 fixed at the center. The cleaning object holding part. The side surface of the cleaning object holding part is made of an elastic member such as urethane rubber or foamed resin, and fixes the cleaning object 5. The cleaning object holding unit may hold the cleaning object 5 in any way as long as the cleaning object 5 is held so that there is no gap in which the airflow does not leak and the cleaning medium 6 is clogged. In the vicinity of the cleaning object holding portion of the cleaning object holding means 3, for example, a cleaning medium dam composed of a punching metal, a resin plate having slits, a flexible film, a rubber plate, a brush or the like and a breathable scraper. Stop means 23 is provided. Further, the cleaning object holding means 3 may be configured to include an opening that matches the shape of the cleaning object 5 as shown in the plan view of FIG. 3A and the AA cross-sectional view of FIG. Since the elastic member 39 of the cleaning object holding part is in close contact with the cleaning object 5 and the opening sealing member 4 is fixed to the cleaning object 5, the adhered matter removed from the cleaning medium 6 and the cleaning object Does not leak out of the washing tank.

  The cleaning object holding means 3 is detachably attached to a driving means (not shown) such as a linear motor, an air cylinder, or a wire driving means, and the driving means is driven by a control signal from a control device to wash the cleaning tank. It moves along the laminar flow forming part 19 in parallel with the operation of the unit 2.

  The cleaning object 5 to be cleaned by the dry cleaning apparatus 1 is a mask jig or the like having a plurality of openings 24 as shown in the perspective view of FIG. In order to prevent the cleaning medium 6 and the removed fixed dirt from leaking from the opening 24 of the object 5 to be cleaned, the opening sealing member 4 has an opening 24 opposite to the surface to be cleaned of the object 5 to be cleaned. Fixed to the part. As shown in the perspective view of FIG. 5, the cleaning medium flying direction control means 25 is fixed to the portion of the opening sealing member 4 corresponding to the opening 24 of the cleaning object 5. The cleaning medium flying direction control means 25 is formed in a pyramid shape or a truncated pyramid shape having four inclined surfaces, and has an injection port 26 on each inclined surface. As shown in the cross-sectional view of FIG. 6, the injection port 26 communicates with the atmosphere opening 27 on the side opposite to the surface fixed to the cleaning object 5, and the cleaning tank 7 is made to have a negative pressure so as to be cleaned. An inflow air current is generated from the through hole 26 provided in the object holding means 3 to the opening 24.

  An operation of removing dirt and dust such as flux attached to the cleaning object 5 having the opening 24 in the dry cleaning apparatus 1 will be described.

  First, an appropriate amount of the cleaning medium 6 is put into the cleaning tank 7, and the cleaning medium flying direction control means 25 of the opening sealing member 4 is aligned with the opening 24 of the cleaning object 5 as shown in FIG. The opening sealing member 4 is fixed on the cleaning object 5. The cleaning target object 5 to which the opening sealing member 4 is fixed is held by the cleaning target object holding means 3, and the cleaning target object holding means 3 is mounted on the cleaning tank unit 2 with the cleaning target object 5 facing the cleaning tank unit 2. Then, it is connected to a driving means (not shown), and the object to be cleaned 5 is moved onto the cleaning tank 7 as shown in FIG. When a control device (not shown) is operated in this state, the control device first drives the suction device 16 to suck the air in the cleaning tank 7. The suction of the air in the cleaning tank 7 generates a differential pressure with the outside air, and the gap 22 between the laminar flow forming portion 19 formed by the linear guide 20 and the cleaning object holding means 4 serves as a flow path. Inward airflow is generated. This airflow passes through the flat surface of the laminar flow forming portion 19 and is made into a laminar flow, and the outside air flows into the cleaning tank 7. Next, the control device drives the compressed air supply device 12 to open the control valve 13 to supply compressed air to the cleaning medium acceleration nozzle 11 and to generate a high-speed air flow in the vertical upward direction from the cleaning medium acceleration nozzle 11 into the cleaning tank 7. generate. As shown in FIG. 2, the cleaning medium 6 flies at a high speed and collides with the cleaning target object 5 and efficiently removes dirt, dust and the like adhering to the surface of the cleaning target object 5. The cleaning medium 6 that has collided with the cleaning object 5 falls due to the flow of air and gravity, and slides down in the vicinity of the cleaning medium acceleration nozzle 11 while being sucked on the cleaning medium separating means 10. At the same time, the dirt adhering to the cleaning medium 6 is separated and sucked. Dirt, dust and the like separated by the cleaning medium separating means 10 are collected by the suction device 16 through the intake duct 15 and the suction pipe 18. In addition, the cleaning medium 6 that has fallen in the vicinity of the cleaning medium acceleration nozzle 11 flies vertically upward by a high-speed air flow ejected by the cleaning medium acceleration nozzle 11 again. By repeating this operation, dirt, dust, deposits and the like on the surface of the cleaning object 5 are removed.

  Among the high-speed air flow ejected by the cleaning medium acceleration nozzle 11, the air flow blown toward the opening 24 of the cleaning object 5 flows along the inclined surface of the cleaning medium flying direction control means 25 as shown in FIG. 6. . An airflow flows from the injection port 26 provided on the inclined surface of the cleaning medium flight direction control means 25 due to the differential pressure between the negative pressure in the cleaning tank 7 and the atmospheric pressure. The airflow toward is further strengthened. For this reason, the cleaning medium 6 that has jumped into the opening 24 of the cleaning object 5 changes the flight direction by riding on the formed air current, and collides perpendicularly with the inner surface of the opening 24 of the cleaning object 5 to cause dirt, dust, etc. Remove.

  When the cleaning target 5 is cleaned by the flying cleaning medium 6, a strong laminar airflow flows from the gap 22 between the laminar flow forming unit 19 and the cleaning target holding means 3. Accordingly, the cleaning medium 6 that is about to enter the gap 22 is pushed back and is not discharged out of the cleaning tank 7, but is finally blocked by the cleaning medium damming means 23 and falls onto the outer edge of the cleaning tank 7 and stops.

  When the cleaning medium 6 is caused to fly by the cleaning medium acceleration nozzle 11 to clean the object 5 to be cleaned, the control valve 13 is intermittently driven to repeatedly eject and stop the high-speed air flow from the cleaning medium acceleration nozzle 11. By repeating the jetting and stopping of the high-speed air flow, a timing at which the pressure difference between the inside and outside of the cleaning tank 7 increases, and the cleaning medium 6 can be more reliably pulled back into the cleaning tank 7 and the cleaning medium can be obtained. It is possible to increase the flow velocity of the inflow air current from the injection port 26 provided on the inclined surface of the flight direction control means 25.

  In parallel with the intermittent drive of the control valve 13, the control device reciprocates the cleaning object holding means 3 along the side guide 21 and the linear guide 20 of the laminar flow forming portion 19 of the cleaning tank unit 2 and back and forth of the cleaning tank 7. To clean the entire surface of the object 5 to be cleaned. After the cleaning object holding means 3 is reciprocated at least once, and several times if necessary, the controller stops driving the compressed air supply device 12 and the suction device 16 to complete a series of cleaning operations.

  Thus, by cleaning the cleaning object 5 by moving the cleaning object holding means 3 back and forth with respect to the cleaning tank 7, the entire surface including the opening 24 of the cleaning object 5 can be reliably cleaned. . Further, when the cleaning object holding means 3 is intermittently moved back and forth with respect to the cleaning tank 6, the cleaning medium remaining in the gap 22 between the laminar flow forming portion 19 and the cleaning object holding means 3 by the cleaning medium damming means 23. 6 can be swept out and reliably recovered in the washing tank 7.

  In the above description, the case where the airflow is caused to flow from the jet port 26 of the cleaning medium flying direction control means 25 by the differential pressure between the negative pressure in the cleaning tank 7 and the atmospheric pressure is shown. Air may be supplied to the cleaning medium flight direction control means 25 and ejected from the ejection port 26.

  Further, in the above description, the case where the injection port 26 is provided on the inclined surface of the cleaning medium flying direction control means 25 has been described. However, as shown in the plan view of FIG. 7A and the side view of FIG. For example, the nozzle head has three injection nozzles 30 that inject pressurized air at a predetermined angle with respect to the normal line of the outer peripheral surface, and the pressurized air supplied from the outside to the opening sealing member 4 is provided in three directions. A cleaning medium flying direction control means 25 having a rotating nozzle 31 that is jetted from and rotated may be provided.

  The opening sealing member 4 to which the rotary nozzle 31 constituting the cleaning medium flying direction control means 25 is rotatably attached has a plurality of guide pins 32 and a fixing spring 33 on the upper portion as shown in FIG. The guide pin 32 and the fixed spring 33 are positioned and attached to the cleaning object holding means 3, and the air supply portion of the rotary nozzle 31 is connected to an air supply joint 34 provided on the cleaning object holding means 3. Each air supply joint 34 of the cleaning object holding means 3 is connected to a pressurized air supply tube 36 via an electromagnetic valve 35. When the opening sealing portion 4 is fixed to the cleaning object 5 and attached to the cleaning object holding means 3, the opening sealing member 4 is pressed against the cleaning object 3 by the fixing spring 33 and the cleaning object 3 A gap is prevented from being generated around the opening 24.

  The cleaning medium flying direction control means 25 of the opening sealing portion 4 provided with the cleaning medium flying direction control means 25 having the rotating nozzle 31 is aligned with the opening 24 of the cleaning object 5 to adjust the cleaning object 5. The cleaning object 5 is moved onto the cleaning tank 7 in a state where the opening sealing member 4 is fixed on the top and the cleaning object 5 holding the opening sealing member 4 is held by the cleaning object holding means 3. Then, when the cleaning medium 6 is made to fly and the object 5 to be cleaned is cleaned, pressurized air is supplied from the pressurized air supply tube 36 to the rotating nozzle 31 of the cleaning medium flight direction control means 25 via the electromagnetic valve 34. To do. The pressurized air supplied to the rotary nozzle 31 is jetted from each jet nozzle 30 and rotates the rotary nozzle 31 and jets an air flow toward the inner surface of the opening 24 of the cleaning object 5. The cleaning medium 6 flying into the opening 24 by the air flow ejected from the rotating nozzle 31 changes the flight direction and collides perpendicularly with the inner surface of the opening 24 of the cleaning object 5 to remove dirt, dust and the like.

  In this way, the jet direction of the cleaning medium 6 can be changed in a non-contact manner by injecting the pressurized air from each injection nozzle 30 of the rotary nozzle 31 at a predetermined angle with respect to the normal line of the outer peripheral surface. The damage applied can be reduced, and the lamellar cleaning medium 6 can be easily accelerated in the centrifugal direction. Moreover, the consumption of pressurized air can be reduced by injecting airflow intermittently from each injection nozzle 30.

  In the above description, the rotating nozzle 31 is rotated by the air flow ejected from each of the injection nozzles 30. However, the cleaning medium 6 that has jumped into the opening 24 can be fixed even if the rotating nozzle 31 is fixed without rotating. It can fly in the centrifugal direction.

  Further, in the above description, the case where the cleaning medium 6 is caused to collide with each jet nozzle 30 of the rotary nozzle 31 by the airflow inclined by a predetermined angle with respect to the inner surface of the opening 24 of the cleaning target 5 is described. In addition, as shown in FIG. 8, the impeller 38 having a plurality of, for example, three rotating blades 37 may be rotated to project the collided cleaning medium 6 in the centrifugal direction. The impeller 38 may be rotationally driven from the outside by a motor. Further, the rotation blade 37 may be appropriately rotated by a high-speed air current ejected from the cleaning medium acceleration nozzle 11 of the cleaning medium acceleration unit 8.

  By using the dry cleaning apparatus 1 to clean the cleaning object 5 having many openings, the cleaning object 5 can be used repeatedly and resources can be used effectively. Moreover, even if the position and number of the openings of the cleaning object 5 are different, it is only necessary to use the opening sealing member 4 according to the position and number, so that the cleaning object 5 can be applied to various cleaning objects 5.

It is a mechanism block diagram of the dry-type cleaning apparatus of this invention. It is a partial expanded sectional view which shows the principal part of a dry-type cleaning apparatus. It is another block diagram of a washing | cleaning target object holding means. It is a perspective view which shows the structure of a washing | cleaning target object. It is a perspective view which shows the structure of an opening part sealing member. It is sectional drawing which shows the structure of the cleaning medium flight direction control means of an opening part sealing member. It is a block diagram of the opening part sealing member which has a cleaning medium flight direction control means provided with the rotation nozzle. It is sectional drawing which shows the state which attached the opening part sealing member which has a rotating nozzle to the washing | cleaning target object holding means. It is a perspective view which shows the impeller of a washing | cleaning medium flight direction control means. It is a schematic block diagram of the conventional dry-type washing | cleaning measure.

Explanation of symbols

1; dry cleaning device, 2; cleaning tank unit, 3;
4; Opening sealing member, 5; Cleaning object, 6; Cleaning medium, 7; Cleaning tank,
8; Cleaning medium acceleration means, 9; Cleaning medium return means, 10; Cleaning medium separation means,
11; Cleaning medium acceleration nozzle, 12; Compressed air supply device, 13; Control valve,
14; air pipe, 15; suction duct, 16; suction device, 17 cleaning medium moderator,
18; suction pipe, 19; laminar flow forming surface, 20; linear guide, 21; side guide,
22; gap, 23; cleaning medium damming means, 24; opening,
25; cleaning medium flying direction control means, 26; injection port, 27; atmosphere opening port,
30; injection nozzle, 31; rotating nozzle, 32; guide pin, 33; fixed spring,
34; air supply joint, 35; solenoid valve, 36; pressurized air supply tube,
37; Rotating blade, 38; Impeller, 39; Elastic member.

Claims (8)

A dry cleaning apparatus for cleaning by colliding the cleaning object having one or more openings flaky cleaning medium flowing through the high-speed air stream,
Fixed to said cleaned object has a return means cleaning medium with the opening sealing member and the cleaning tank and the cleaning target object holding means for sealing the opening,
The cleaning tank has an opening on one side, and has cleaning medium separating means that allows gas and dust to pass through the wall surface but cannot pass through the cleaning medium, and accelerates the cleaning medium in the direction of the opening. Having means,
The cleaning medium return means is provided at an outer edge of the suction device connected via the cleaning medium separation means and the opening of the cleaning tank, and holds the cleaning object holding means, and has a gas inflow passage at regular intervals. Having a cleaning medium deceleration means for forming
The opening sealing member has cleaning medium flying direction control means for switching the flying direction of the cleaning medium,
The dry cleaning apparatus, wherein the cleaning object holding means holds a cleaning object to which the opening sealing member is fixed and is movable along the cleaning medium speed reducing means. The cleaning medium flying direction control means, the dry cleaning apparatus according to claim 1 Symbol mounting and having an injection port for injecting an air flow toward the inner surface of the opening. The cleaning medium flying direction control means, the dry cleaning apparatus according to claim 1 Symbol mounting and having an injection port for injecting a predetermined angle inclined airflow to the inner surface of the opening. The dry cleaning apparatus according to claim 3, wherein the cleaning medium flying direction control means is rotatable. The dry cleaning apparatus according to any one of claims 2 to 4 , wherein compressed air is supplied to the cleaning medium flight direction control means to inject an air flow from the injection port. The cleaning medium flying direction control means, according to claim 1 Symbol placement dry cleaning apparatus characterized by having a flow control plate for correcting the direction of the airflow generated by the cleaning medium accelerating unit in a direction toward the opening interior surface . A cleaning method using the dry cleaning apparatus according to any one of claims 1 to 6 ,
While the air in the cleaning tank is being sucked in, the cleaning medium accelerating means generates a high-speed air current, and the cleaning medium flying direction is defined as the cleaning medium flying direction by flying the thin cleaning medium and flying to the opening of the object to be cleaned A cleaning method characterized by cleaning the inner surface of the opening of the object to be cleaned by switching by a control means. A cleaning object, which is cleaned using the dry cleaning apparatus according to any one of claims 1 to 6 .

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