JP2019081132A - Cleaning device for object to be cleaned - Google Patents

Abstract

To provide a cleaning device which enables liquid cleaning and/or steam cleaning, and vacuum drying in one washing tank, and can reduce a pressure in the washing tank without taking a long time.SOLUTION: A cleaning device comprises: a washing tank 1 which comprises a partition wall 4 provided with a communication opening 5 which can be opened/closed in a lid body 1, and in which an upper side space and a lower side space, which are partitioned by the partition wall 4, are so made as to be an upper chamber 2 and a lower chamber 3 respectively; and pressure reduction means which can reduce a pressure in the upper chamber 2 in the state that the communication opening 5 is closed by the lid body 1. The device stores a cleaning solvent 28 and a solid contaminant 31 in the lower chamber 3 and closes the communication opening 5 thereby separating the interior of the upper chamber 2 and the interior of the lower chamber 3 from each other, and operates pressure reduction means 8, thereby enabling vacuum drying of an object 28 to be cleaned in the upper chamber 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cleaning apparatus for cleaning objects to be cleaned such as machine parts, electronic parts, and medical devices.

  Conventionally, as shown in Patent Document 1 and FIGS. 5 and 6, there has been known a cleaning apparatus for performing liquid cleaning, vapor cleaning and reduced-pressure drying of a cleaning solvent (117) in one cleaning tank (115). In this cleaning apparatus, first, as shown in FIG. 5, the liquid is washed in the washing tank (115), and the washing liquid used for this liquid washing is transferred from the washing tank (115) to another storage tank (118) etc. As shown in FIG. 6, steam cleaning and vacuum drying are performed in the same cleaning tank (115).

Unexamined-Japanese-Patent No. 2015-202463

  However, in the case of the conventional washing apparatus as described above, solid dirt (116) such as metal powder is deposited on the bottom of the washing tank (115) after liquid washing as shown in FIGS. Removing the stain (116) was difficult. Therefore, it is necessary to carry out vacuum drying with the solid dirt (116) deposited on the bottom, but if solid dirt (116) remains, it takes many hours to reach the degree of vacuum necessary for vacuum drying. In addition, it is expensive and inefficient.

  Therefore, the present invention is intended to solve the problems as described above, and enables liquid washing and / or steam washing and reduced-pressure drying in one washing tank, and does not require much time. It is an object of the present invention to obtain a cleaning device capable of reducing the pressure in the cleaning tank.

  In order to solve the problems as described above, the present invention has a partition provided with a communication opening that can be opened and closed by a lid, and the upper space separated by the partition is an upper chamber and the lower space is a lower chamber. And a depressurizing means capable of depressurizing the upper chamber in a state in which the communication opening is closed by the lid body, and a cleaning solvent and solid dirt are stored in the lower chamber and the communication opening is closed. The upper chamber and the lower chamber are separated, and the upper chamber is depressurized by operating the above-mentioned pressure reducing means, and the object to be cleaned can be dried under reduced pressure in the upper chamber.

  Further, separately from the cleaning tank, it communicates with the upper chamber and the lower chamber of the cleaning tank so that the cleaning solvent in the lower chamber can be stored, and the stored cleaning solvent can be transferred to the upper chamber It may be equipped with a storage tank.

  Further, the upper chamber and the lower chamber communicate with each other in the communication passage provided on the outer side of the cleaning tank and by providing the transfer pump, or reducing the pressure in the upper chamber to use the pressure difference between the upper chamber and the lower chamber. By doing this, the cleaning solvent in the lower chamber may be transferred to the upper chamber.

  Since the present invention is configured as described above, when liquid cleaning and / or vapor cleaning is performed in the upper chamber in a state where the communication opening is closed by the lid, from the cleaning object by these cleaning Solid dirt such as metal powder and dust peels off and falls off. Then, by opening the communication opening, solid dirt in the upper chamber flows into the lower chamber together with the cleaning solvent through the communication opening. Therefore, solid dirt in the upper chamber generated by liquid and / or vapor cleaning can be easily removed.

  In addition, when performing vacuum drying in the upper chamber after liquid and / or steam cleaning, since the solid dirt in the upper chamber flows into the lower chamber and is removed as described above, vacuum drying of the solid dirt is performed in the upper chamber. I will not be hurt. Therefore, since it does not require a long time to raise the degree of vacuum, the cost for reduced pressure drying can be suppressed to a low level, and the efficiency of washing and reduced pressure drying operations can be improved.

  Further, as described above, the degree of contamination of the cleaning solvent in the upper chamber can be reduced by flowing solid dirt in the upper chamber into the lower chamber and removing it. Therefore, when the cleaning solvent in the upper chamber is recovered and reused for the next cleaning, the introduction of dirt can be reduced.

The conceptual diagram at the time of liquid washing which shows the state which open | released the communication opening in Example 1 of this invention. FIG. 7 is a conceptual view showing a state in which the communication opening is closed in the first embodiment. The conceptual diagram at the time of liquid washing which shows Example 2 of this invention. FIG. 8 is a conceptual view showing a state in which the communication opening is closed in the second embodiment. The conceptual diagram at the time of liquid washing | cleaning in a prior art example. The conceptual diagram at the time of vacuum drying in a prior art example.

  The first embodiment of the present invention will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, (1) is a cleaning tank, which is closer to the bottom than the central portion in the height direction. A partition (4) is provided in the horizontal direction to separate the inner space of the upper chamber (2) and the lower chamber (3). The partition (4) is provided with a communication opening (5) enabling communication between the upper chamber (2) and the lower chamber (3), and the communication opening (5) is provided with a lid (6). It is provided. In addition, a vacuum pump, which is a pressure reducing means (8) of the present invention, is disposed in the cleaning tank (1) via a condenser (7) and a first communication pipe (11) provided with a first on-off valve (10). Connected.

  Further, separately from the washing tank (1), the first flow passage (14) and the second flow passage (15) are separated from the upper chamber (2) and the lower chamber (3) of the washing tank (1). The storage tank (16) which can communicate respectively is provided. Further, a third on-off valve (17) and a fourth on-off valve (18) are provided in the first flow passage (14) and the second flow passage (15), respectively. Therefore, the cleaning solvent (28) stored in the lower chamber (3) of the cleaning tank (1) can be stored in the storage tank (16) through the second flow passage (15), and this storage tank (16) The cleaning solvent (28) accommodated inside can be accommodated in the upper chamber (2) of the cleaning tank (1) through the first flow passage (14). Furthermore, the storage tank (16) communicates with the pressure reducing means (8) through a third communication pipe (21) provided with a fifth on-off valve (20).

  The washing tank (1) is provided with a steam generation tank (22) formed separately from the washing tank (1), and the steam generation tank (22) and the washing tank (1) are Communication is enabled via a fourth communication pipe (24) provided with a sixth on-off valve (23). Further, the steam generation tank (22) is provided with a heating mechanism (25), and the heating mechanism (25) heats the cleaning solvent (28) contained in the steam generation tank (22) to wash the cleaning steam. Can be generated. Further, the steam generation tank (22) and the pressure reducing means (8) can be communicated via a fifth communication pipe (27) provided with a seventh on-off valve (26).

  The method for cleaning the object to be cleaned (30) in the configuration as described above will be described below. The first to seventh on-off valves (10), (17), (18), (20), (23) and (26) are closed in advance. First, as shown in FIG. 1, the lid (6) is opened to open the communication opening (5) of the partition (4). Then, the object to be cleaned (30) is placed at a predetermined position in the cleaning tank (1), and the solution to be cleaned (30) is immersed in the cleaning solvent (28) to perform solution cleaning. By this liquid washing, solid dirt (31) such as metal powder and dust adhering to the object to be cleaned (30) is peeled off from the object to be cleaned (30).

  At this time, since the upper chamber (2) and the lower chamber (3) communicate with each other at the communication opening (5), the solid dirt (31) separated from the object to be cleaned (30) by the liquid cleaning is 2) is accommodated in the lower chamber (3) through the communication opening (5). Therefore, since the solid dirt (31) separated from the object to be washed (28) by the liquid washing is deposited in the lower chamber (3), the solid dirt (31) is deposited in the upper chamber (2) You can prevent that.

  The cleaning solvent (28) which has flowed into the lower chamber (3) together with the solid dirt (31) operates the pressure reducing means (8) and the fourth on-off valve (18) and the fifth on-off valve (20). By opening it, it will be stored in the storage tank (16) through the second flow passage (15).

  In addition, as shown in FIGS. 1 and 2, since the second flow passage (15) is connected to the lower chamber (3) near the partition wall (4), the solid dirt (31) flowing into the lower chamber (3) The upper cleaning solvent (28) can be transferred to the reservoir (16). Therefore, the solid dirt (31) deposited on the bottom of the lower chamber (3) can be prevented from flowing into the second flow passage (15), so the cleaning solvent (28) transferred to the storage tank (16) When reusing, it can reduce the introduction of dirt.

  Then, after the liquid cleaning is completed as described above, the vapor cleaning is performed. First, the cleaning mechanism (25) in the steam generation tank (22) is heated by the heating mechanism (25) of the steam generation tank (22) to generate cleaning steam. Then, with the pressure reducing means (8) activated, the first and sixth on-off valves (10) and (23) are opened, and the cleaning steam in the steam generation tank (22) is allowed to flow into the cleaning tank (1) to reduce pressure. Do a steam flush below. The vapor in the cleaning tank (1) is sent to the condenser (7) through the first communication pipe (11), condensed by the condenser (7), and then re-steamed through the second communication pipe (13) It is stored in the generating tank (22).

  In the present embodiment, as described above, the vapor cleaning is performed in a state where all the cleaning solvent (28) in the upper chamber (2) is transferred to the storage tank (16) or the lower chamber (3). It is also possible to carry out steam cleaning with the cleaning solvent (28) remaining in the upper chamber (2).

  Then, after the vapor cleaning is completed, the sixth on-off valve (23) is closed and the depressurizing means (8) is operated to perform reduced-pressure drying of the object to be cleaned (30). At this time, as described above, since the solid dirt (31) is removed from the upper chamber (2) from the inside of the upper chamber (2) together with the cleaning solvent (28) to the lower chamber (3) side at the end of the liquid cleaning Almost no solid dirt (31) remains in the upper chamber (2).

  Then, in this state, the communication opening (5) of the partition wall (4) is closed by the lid (6) and the fourth on-off valve (18) is closed. As a result, the cleaning solvent (28) and the solid dirt (31) do not enter the upper chamber (2) and hardly remain inside. Therefore, vacuum drying can be performed in a relatively short time, which has conventionally taken a lot of time because vacuum drying is performed to the extent of the solid dirt. Therefore, the cost for drying under reduced pressure can be reduced, and the working efficiency can be improved.

  In the present embodiment and the following embodiments, although the case of performing the reduced pressure drying after the liquid washing and the steam washing as described above is described, in the present embodiment and the following examples, only the liquid washing or the steam is used. It is also possible to carry out drying under reduced pressure after either washing alone.

  In the first embodiment, the storage tank (16) which can communicate with the cleaning tank (1) is provided, but in the second embodiment of the present invention, the upper chamber (81) and the lower chamber ( 82) are communicated with each other through a communication passage (84) provided outside the cleaning tank (83). The second embodiment will be described with reference to FIGS. 3 and 4. As shown in FIG. 3, the inner space of the cleaning tank (83) is located in the upper chamber (81) closer to the bottom side than the central portion in the height direction of the cleaning tank (83). ) And the lower chamber (82) are provided in the horizontal direction.

  The partition (85) is provided with a communication opening (86) enabling communication between the upper chamber (81) and the lower chamber (82), and the communication opening (86) is provided with a lid (87). It is provided. Then, a vacuum pump, which is the pressure reducing means (92) of the present invention, is connected to the cleaning tank (83) via a condenser (91), and a first communication pipe (94) provided with a first on-off valve (93). Connected through.

  Further, a communication passage (84) communicating with the upper chamber (81) and the lower chamber (82) of the cleaning tank (83) is provided outside the cleaning tank (83) with a transfer pump (97) and a filter (97). 98), and the communication passage (84) is provided with a third on-off valve (100). Therefore, the cleaning solvent (105) accommodated in the lower chamber (82) of the cleaning tank (83) can be accommodated in the upper chamber (81) through the communication passage (84). In the present embodiment, as described above, the cleaning solvent (105) in the lower chamber (82) can be stored in the upper chamber (81) by the transfer pump (97), but the transfer pump (97) is used. By previously reducing the pressure in the upper chamber (81), the pressure difference between the upper chamber (81) and the lower chamber (82) causes the cleaning solvent (105) in the lower chamber (82) to become the upper chamber (82). 81) It is also possible to store it inside.

  The washing tank (83) is provided with a steam generation tank (101) formed separately from the washing tank (83), and the steam generation tank (101) and the washing tank (83) are Communication is enabled via a third communication pipe (103) provided with a fourth on-off valve (102). In addition, the steam generation tank (101) is provided with a heating mechanism (104), and the heating mechanism (104) heats the cleaning solvent (105) stored in the steam generation tank (101) to clean it. It can generate steam. Further, the steam generation tank (101) and the pressure reducing means (92) can be communicated via a fourth communication pipe (107) provided with a fifth on-off valve (106).

  The method for cleaning the object to be cleaned (108) in the configuration as described above will be described below. The first to fifth on-off valves (93) (100) (102) (106) are previously closed. First, as shown in FIG. 3, the communication opening (86) of the partition (85) is sealed with a lid (87). Then, the object to be cleaned (108) is placed at a predetermined position in the cleaning tank (83), and the object to be cleaned (108) is immersed in the cleaning solvent (105) and liquid cleaning is performed under normal pressure. . Then, by performing the liquid cleaning, solid dirt (110) such as metal powder or dust attached to the object to be cleaned (108) is peeled off from the object to be cleaned (108).

  Then, after the liquid cleaning is completed, as shown in FIG. 4, the lid (87) is opened to open the communication opening (86), and the upper chamber (81) and the lower chamber (82) are communicated. As a result, the solid dirt (110) separated from the object to be cleaned (108) as described above flows into the lower chamber (82) from the communication opening (86) together with the cleaning solvent (105). Thus, the solid dirt (110) in the upper chamber (81) can be easily removed by the simple method of opening the lid (87) of the communication opening (86). Then, the solid dirt (110) flowing into the lower chamber (82) is deposited on the bottom of the lower chamber (82) as shown in FIG.

  Then, after the liquid cleaning is completed as described above, the vapor cleaning is performed in a state where all the cleaning solvent (105) in the upper chamber (81) is accommodated in the lower chamber (82). First, the third on-off valve (100) of the communication pipe is closed again. Then, the cleaning solvent (105) in the steam generation tank (101) is heated by the heating mechanism (104) to generate cleaning vapor. Then, with the pressure reducing means (92) operated, the first and fourth on-off valves (93) and (102) are opened to allow the cleaning steam in the steam generation tank (101) to flow into the cleaning tank (83) Do the wash. The vapor in the washing tank (83) is sent to the condenser (91) through the first communication pipe (94), condensed by the condenser (91), and then washed again through the second communication pipe (96). It is housed in a tank (83).

  After the steam cleaning is completed, reduced pressure drying is performed. That is, even when the fourth on-off valve (102) is closed, the communication opening (86) of the partition wall (85) is closed by the lid (87) and the pressure reducing means (92) is opened with the first on-off valve (93) open. )). As a result, the pressure in the cleaning tank (83) is reduced to evaporate the cleaning solvent (105) adhering to the object to be cleaned (108), and the object to be cleaned (108) is dried.

  At this time, since the solid dirt (110) from the inside of the upper chamber (81) was allowed to flow into the lower chamber (82) side together with the cleaning solvent (105) at the end of the liquid cleaning as described above, Almost no solid dirt (110) remains in the chamber (81). Therefore, since the degree of vacuum in the upper chamber (81) can be increased without requiring much time, the cost required for the work can be reduced and the work efficiency can be improved.

  When the next liquid cleaning is performed after the drying operation as described above, the transfer pump (97) is operated and the third on-off valve (100) is opened to clean the lower chamber (82). The solvent (105) is again stored in the upper chamber (81) through the communication passage (84) and the filter (98). By this configuration, the liquid can be made to flow from the lower chamber (82) to the upper chamber (81) without providing a separate storage tank, thus making the device compact without requiring extra space. be able to.

1, 83 cleaning tank 2, 81 upper chamber 3, 82 lower chamber 4, 85 partition 5, 86 communication opening 6, 87 lid 8, 92 decompression unit 14 first flow passage 15 second flow passage 16 storage tank 28, 105 Cleaning solvent 30, 108 Washable object 31, 110 Solid dirt

In order to solve the problems as described above, the present invention has a partition provided with a communication opening that can be opened and closed by a lid, and the upper space separated by the partition is an upper chamber and the lower space is a lower chamber. And a pressure reducing means capable of reducing the pressure in the upper chamber in a state in which the communication opening is closed by the lid, and the object to be cleaned is disposed in the upper chamber and the cleaning solvent for the object to be cleaned is used. It performs liquid cleaning and / or steam cleaning, after storing the release solid dirt and cleaning solvents when the liquid cleaning and / or steam cleaning the bottom chamber, separated and the lower chamber in the upper portion room and closes the communication opening The upper chamber is depressurized by operating the above-mentioned decompression means, and reduced pressure drying of the object to be cleaned is enabled in the upper chamber.

Claims (3)

  The lid has a partition provided with a communication opening that can be opened and closed by a lid, and the upper space separated by the partition is an upper chamber and the lower space is a lower chamber, and the lid communicates with the cleaning tank A pressure reducing means capable of reducing the pressure in the upper chamber in a state in which the opening is closed, containing a cleaning solvent and solid dirt in the lower chamber and closing the communication opening to separate the upper chamber and the lower chamber; An apparatus for cleaning an object to be cleaned characterized in that the upper chamber is depressurized by operating the pressure reducing means, and the object to be cleaned can be dried under reduced pressure in the upper chamber.   It is provided separately from the washing tank and can be communicated with the washing tank through the flow passage, and can store the washing solvent in the washing tank, and can transfer the stored washing solvent into the washing tank again. The washing | cleaning apparatus of the to-be-washed | cleaned material of Claim 1 provided with the storage tank.   The upper chamber and the lower chamber communicate with each other through a communication passage provided on the outer side of the cleaning tank, and a transfer pump is provided in the communication passage to reduce the pressure in the upper chamber by utilizing the action of the transfer pump The apparatus for cleaning an object to be cleaned according to claim 1, wherein the cleaning solvent in the lower chamber can be transferred to the upper chamber through the communication passage by utilizing a pressure difference between the upper chamber and the lower chamber.