JPH07185202A - Distillation regenerating device and cleaning device using distillation regenerating device - Google Patents

Abstract

PURPOSE:To distill with high accuracy and carry out the steam cleaning of a material to be cleaned, cause no danger of explosion even when a large amount of steam is produced by the abnormal overheating or the like of a steam generating tank, reduce the pressure of the steam generating tank, an insertion chamber, a steam cleaning tank and the like and carry out the pressure reduced drying of the material to be cleaned. CONSTITUTION:One end of a reflux cylinder 6, the other end of which is connected with a steam generating tank 1, is inserted into an insertion chamber 13. A discharge tube 24 connected with the insertion chamber 13 is crossed and connected with a circulation piping 31, both ends of which are connected with a storage tank 23. Cooling condensate is flowed and circulated in the circulation piping 31, and the absorbing action by an ejector is generated on a connecting section 33 connected with the discharge tube, and steam flowing from the discharge tube 24 is brought into contact with the cooling condensate and condensed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to mechanical parts, electronic parts,
A distillation regenerator for distilling and regenerating a dirty solvent or a clean solvent used for cleaning an object to be cleaned, such as a printed circuit board, and a distilling regenerator for performing vapor cleaning using steam generated from the distillation regenerator were used. The present invention relates to a cleaning device.

[0002]

2. Description of the Related Art Conventionally, a distillation regenerator for distilling and regenerating a solvent used for washing an object to be cleaned has used a method of heating the solvent and bringing the evaporated vapor into contact with a cooling section or the like to condense it. However, this method was insufficient when trying to improve the accuracy of distillation regeneration.

Further, conventionally, a steam generating mechanism is connected to a steam cleaning tank for cleaning the object to be cleaned with steam. With this steam generating mechanism, not only cleaning steam is generated but also highly accurate distillation regeneration. There was nothing that could cause the generation of steam.

[0004]

DISCLOSURE OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and it is possible to improve the accuracy of distillation regeneration and, if necessary, perform vapor cleaning of the object to be cleaned. Is something that can be done. Moreover, it is an object of the present invention to provide a device that achieves this purpose with a small and simple mechanism.

[0005]

In order to solve the above problems, the present invention is provided with a steam generation tank for heating a solvent to generate steam, and one end of a reflux cylinder can be introduced into this steam generation tank. Connect and connect the other end of this reflux cylinder to the inside to form an insertion chamber, and connect the outlet pipe with one end connected to this insertion chamber to the circulation pipe with both ends connected to the storage tank for the cooling condensate. Connected, provided with a circulation pump that circulates the cooling condensate in a part of this circulation pipe, circulates the cooling condensate between the storage tank and the circulation pipe, and connects the outlet pipe and the circulation pipe to The ejector causes an absorbing action, and at this connecting portion, the steam flowing from the outlet pipe and the cooling condensate are brought into contact with each other to condense the steam.

Further, the cleaning device using the distillation regeneration device is
A steam generating tank for heating the solvent to generate steam is provided, and one end of a reflux cylinder is connected to the steam generating tank so that steam can be introduced, and the other end of the reflux cylinder is inserted into the inside to form an insertion chamber, A lead-out pipe having one end connected to this insertion chamber is connected to intersect with a circulation pipe having both ends connected to a storage tank for the cooling condensate, and a circulation pump for circulating and circulating the cooling condensate is provided in a part of this circulation pipe. , Circulates and circulates the cooling condensate between the storage tank and the circulation pipe, and at the connection between the outlet pipe and the circulation pipe,
In addition to causing the absorbing action by the ejector, a steam cleaning tank is connected to the reflux cylinder via a steam introducing pipe having an introducing opening / closing valve.

The insertion chamber may be connected to the steam cleaning tank via a steam outlet pipe having a steam outlet valve.

Further, the upper end of the reflux cylinder may be covered with a lid whose upper end opening is opened by a constant vapor pressure.

Further, the upper end of the reflux tube may be one in which the upper end opening is not covered with a lid and a filling material for gas-liquid contact is filled inside.

Further, the storage tank may be one in which an object to be cleaned is inserted into the condensate to perform immersion cleaning.

Further, the inside of the insertion chamber, the steam generation tank, and the steam cleaning tank may be those whose inside pressure is reduced by suction of the ejector at the connecting portion.

[0012]

Since the present invention is configured as described above, in order to use it as a distillation regenerator, an introduction opening / closing valve of a steam introduction pipe connecting the insertion chamber and the steam generation tank, and a steam cleaning tank and the insertion chamber. Close the steam outlet valve that connects to and fill the steam generation tank with solvent. Then, the solvent is heated to generate steam. This vapor flows into the reflux tube of the insertion chamber.

Since the reflux cylinder is in contact with the outside air having a temperature much lower than the steam temperature, a part of the steam which is cooled by the outside air and flows into the inside is condensed and returned to the heating tank to perform the reflux operation. Enables highly accurate distillation.

Further, the vapor that cannot be completely condensed in the reflux cylinder flows into the insertion chamber through the upper end opening, and is further partially condensed in the insertion chamber cooled by the outside air. Since this insertion chamber is connected to the circulation pipe via the outlet pipe, the vapor that could not be condensed in the reflux pipe is condensed in the circulation pipe.

That is, the storage tank stores the cooling condensate,
Since the circulation pipe connecting both ends to this storage tank connects the outlet pipe in the intersecting direction, if the circulation pump provided in a part of this circulation pipe is operated, the cooling condensate circulates and circulates in the circulation pipe. . This circulation circulation causes the ejector to have an absorbing action at the connection between the outlet pipe and the circulation pipe,
At this connection, the vapor flowing from the outlet pipe and the cooling condensate can be brought into contact with each other to condense the vapor.

Further, since the pressure inside the insertion chamber is reduced by this ejector action, and this pressure reduction depressurizes the inside of the steam generation tank through the reflux tube, the solvent can be boiled at a low temperature to generate steam. Therefore, the amount of energy used is low, it is economical, and even in the case of a highly flammable solvent, steam can be produced at a low temperature, which enables relatively safe steam generation.

Next, in order to perform the steam cleaning using the steam cleaning tank, after the object to be cleaned is stored in the steam cleaning tank, the inlet opening / closing valve of the pipe connecting the steam cleaning tank to the steam generating tank and the insertion chamber is introduced. And open the steam outlet valve. By opening the inlet opening / closing valve and the steam outlet valve, steam is sent to the steam cleaning tank, the steam comes into contact with the object to be cleaned, and condensation occurs on the surface of the object to be cleaned. Become.

In this case, the upper end opening of the reflux cylinder is covered with a lid to prevent the inflow of steam into the insertion chamber and to allow the steam to flow into the steam cleaning tank. In this case, if a large amount of steam is generated due to abnormal overheating of the steam generation tank and there is a danger of explosion, the steam pressure causes the lid to open and the steam to flow into the insertion chamber. By suctioning and condensing by action, pressure rise is prevented.

The solvent for the above-mentioned steam cleaning is generated by filling the steam-generating tank with the waste liquid used for shower cleaning, immersion cleaning, etc. of the object to be cleaned, and distilling the waste liquid. Enables playback. Further, in the case where only steam cleaning is performed without performing distillation regeneration, a clean solvent which is unused or distilled and recycled may be used as the solvent without using the sewage.

When the steam generating tank, the steam cleaning tank and the like are depressurized to perform steam generation and steam cleaning at a low temperature, it is possible to depressurize the inside of these tanks. This decompression reduces the steam at low temperature by connecting the steam generating tank and the steam cleaning tank to the insertion chamber if the condensate outlet pipe is sucked by the ejector function by operating the circulation pump. Allows generation and steam cleaning.

By decompressing the steam cleaning tank,
It is possible to quickly dry the object to be cleaned after the steam cleaning is completed. When this drying is performed, the upper end of the reflux tube is covered with a lid to block the communication between the steam generating tank and the insertion chamber and the steam generating tank and the steam cleaning tank.
Then, if the pressure is reduced while the insertion chamber and the steam cleaning tank are in communication with each other, the object to be cleaned in the steam cleaning tank can be quickly dried.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 1. (1) is a steam generating tank, which is connected to an introduction pipe (2) and a solvent introduction pipe (2) is connected to the introduction pipe (2). It is possible to introduce the solvent (4) by connecting 3). Further, a heater (5) is installed inside the steam generation tank (1) to heat the solvent (4) to generate steam. The heater (5) uses electricity, superheated steam, etc. as a heat source.

Further, the steam generation tank (1) includes a steam generation tank.
A reflux tube (6) for connecting with (1) and introducing steam is connected. The reflux cylinder (6) is filled with a filling material (7) for contacting gas and liquid, and a lid body (10) having a weight that can be opened at a constant pressure at the upper end opening (8) is not fixed. It is placed. However, this lid (10) is used when performing steam cleaning in the steam cleaning tank (11) and is not used when performing only distillation regeneration work, and the upper end of the reflux tube (6) is in an open state. It is a thing.
Further, the above-mentioned reflux tube (6) has a fin (12) for heat radiation protruding to the outer periphery and an upper end inserted into the insertion chamber (13).

In addition, a steam washing tank (11) is inserted into a reflux tube (6) between the insertion chamber (13) and the steam generating tank (1) via a steam introducing pipe (15) having an introducing on-off valve (14). ) Is connected. This steam cleaning tank (11) is for cleaning the steam by inserting the object to be cleaned (16), and is provided with a liquid outlet pipe (17) for leading out the condensed liquid (22) which has been condensed and liquefied, at the bottom. It is connected to the steam generation tank (1) via a valve (18). Also, a steam cleaning tank (1
1) is a sealing lid body (2) urged in the sealing direction by a spring (25) or the like.
6) is formed on the closed lid 27 of the object to be cleaned so that it can be opened and closed.

In the steam cleaning tank (11), the object to be cleaned (1
6) The vapor that could not be condensed while contacting the
3) The steam outlet pipe (28) for flowing into the insertion chamber (1
3) and the steam cleaning tank (11) are connected via a steam outlet valve (21). In addition, the insertion chamber (13) contains condensate.
The storage tank (23) for storing the (22) is connected to the outlet pipe (2).
It is connected via 4).

The storage tank (23) has a cooling section (30) such as a cooling coil formed therein, and the cooled condensate.
(22) is pre-filled in such an amount that it can circulate in the circulation pipe (28). In addition, this storage tank (23) contains condensate (2
Used as a storage tank (23) for 2),
It is also used for immersion cleaning in 6).

The storage tank (23) for the condensate (22) has a circulation pipe (31) whose both ends are connected to the storage tank (23).
A circulation pump (32) is provided in a part of this circulation pipe (31).
Is provided. Then, in the circulation pipe (31), the insertion chamber
The lead-out pipe (24) directly communicating with the inside of the (13) is connected at a substantially right angle in the intersecting direction, and the suction action of steam by the ejector is caused at this connecting part (33) to reduce the pressure inside the insertion chamber (13). It is a thing.

Although only one storage tank (23) may be provided, a plurality of auxiliary storage tanks (34) may be provided if a high degree of immersion cleaning is required. By immersing the object to be cleaned (16) in the tank (34) in sequence, highly accurate immersion cleaning can be performed. In one embodiment,
One auxiliary storage tank (34) is provided, this auxiliary storage tank (34) is used for primary cleaning, and the storage tank (23) near the connection part (33) is used for finish cleaning.

In order to use the present invention as a distillation regenerator with the above-mentioned structure, first, the insertion chamber (13) connected to the steam cleaning tank (11) and the steam generating tank (1) are connected. Connect the communication to the inlet opening / closing valve (14), steam outlet valve (21), outlet valve
(18) is closed and shut off, and the vapor generating tank (1) is filled with the solvent (4). Further, the upper end of the reflux cylinder (6) is opened, and the lid (1
It is not closed by 0).

Then, the solvent (4) is heated by the heater (5) to generate steam. This steam is a reflux tube (6)
Flow into. Since the reflux cylinder (6) is provided with the fins (12) for radiating heat in contact with the outside air whose temperature is lower than that of the steam,
Cool the steam and condense part of it. Then, the condensate (22) is returned to the steam generation tank (1) and countercurrently flows with the steam rising from the steam generation tank (1), and the steam and the condensate (22) are vaporized through the packing (7). Liquid contact occurs, and this reflux enables highly accurate distillation.

The vapor that has not been completely condensed in the reflux tube (6) flows into the insertion chamber (13) and partially condenses and liquefies in the insertion chamber (13) cooled by the outside air. The condensate (22) generated by this condensation and a large amount of vapor that has not been condensed and liquefied flow into the storage tank (23) for the condensate (22) from the outlet pipe (24) through the connection (33). To do. Then, the vapor that could not be condensed in the reflux cylinder (6) or the insertion chamber (13) is condensed in the circulation pipe (31).

That is, the storage tank (23) stores the condensate (22) cooled by the cooling section (30), and the storage tank (23)
The circulation pipe (31) whose both ends are connected to each other connects the outlet pipe (24) in a right-angled intersecting direction. Therefore, this circulation piping
If the circulation pump (32) provided in a part of (31) is operated,
The cooled condensate (22) circulates in the circulation pipe (31). By this circulation, the outlet pipe (24) and the circulation pipe (3
At the connection part (33) with 1), the absorbing action by the ejector is caused. At this connection part (33), the vapor flowing from the outlet pipe (24) can be brought into contact with the cooled condensate (22) to condense the vapor.

The storage tank (23) contains the condensate (22).
Immersion cleaning can be performed not only by storing but also by inserting the object to be cleaned inside and immersing it. The number of storage tanks for immersion cleaning may be one, but two or more storage tanks may be used as the auxiliary storage tank (34). When using multiple storage tanks,
(33), that is, the one closer to the introduction direction of the condensate (22) is preferably used for finish cleaning.

If the operation of the circulation pump (32) installed in a part of the circulation pipe (31) is continued, the vapor in the insertion chamber (13) is sucked and the pressure in the insertion chamber (13) is reduced. You can Due to this decompression, the inside of the steam generation tank (1) communicating with the insertion chamber (13) is also decompressed, and the solvent (4) can be vaporized at a temperature lower than the boiling point under atmospheric pressure. Moreover, it enables relatively safe steam generation.

Next, to perform steam cleaning using the steam cleaning tank (11), the sealing lid (26) is opened and the steam cleaning tank (1) is opened.
After the item (16) to be cleaned is stored in (1), the sealing lid (26) is closed and sealed. Then, the on-off valve (14), the steam outlet valve
(21), the outlet valve (18) is opened, the steam cleaning tank (11),
The steam generation tank (1) and the insertion chamber (13) are connected. By opening these valves, steam is sent to the steam cleaning tank (11), the object to be cleaned (16) comes into contact with the steam in the steam cleaning tank (11), and condensation occurs on the surface of the object to be cleaned (16). By occurring
It becomes possible to clean the object to be cleaned (16) with steam.

In this case, by placing a lid (10) having a weight that is opened at a certain vapor pressure or more on the upper end opening (8) of the reflux cylinder (6), it is introduced into the insertion chamber (13). Since the inflow of steam is prevented, the steam can flow into the steam cleaning tank (11). Also, due to abnormal overheating of the steam generation tank (1),
When a large amount of steam is abnormally generated and there is a danger of explosion, open the lid (10) with the abnormal high-pressure steam and insert it into the insertion chamber.
It is possible to prevent vapor from flowing into the connection part (33) from the inside of (13) and condense to prevent dangerous increase in pressure inside the device.

Further, as described above, if the pressure in the steam generating tank (1) and the insertion chamber (13) is reduced, the pressure in the steam cleaning tank (11) communicating with these is also reduced, and steam is generated at a low temperature. Allows steam cleaning. This decompression enables vapor generation and vapor cleaning at a low temperature, and thus even the object to be cleaned (16) having low heat resistance can be vapor cleaned with a solvent having a high boiling point.

Further, by depressurizing the inside of the steam cleaning tank (11), it becomes possible to quickly dry the object (16) to be cleaned after the steam cleaning. When this drying is performed, the upper end of the reflux cylinder (6) is covered with a lid (10) to block the communication between the steam generation tank (1) and the insertion chamber (13) and to introduce the on-off valve (14). ) Is closed, the steam generation tank (1) and the steam cleaning tank (1
1) Cut off communication with. Then, if the insertion chamber (13) and the steam cleaning tank (11) are in communication with each other and the pressure is reduced, the object to be cleaned (16) in the steam cleaning tank (11) can be quickly dried. .

[0039]

Since the present invention is constructed as described above, it is possible to perform highly accurate distillation by providing a reflux tube as the distillation regeneration device. Further, since the reflux cylinder is provided by inserting one end into the insertion chamber, the device can be downsized.

If the upper end opening of the reflux tube is covered with a lid, steam can be washed by preventing the steam from flowing into the insertion chamber and guiding the steam to the steam washing tank. In addition, when a large amount of steam is generated due to abnormal overheating of the steam generation tank and there is a danger of explosion, this cover should be opened by the steam pressure and flow into the condensation chamber to condense. This makes it possible to prevent the pressure from rising.

Further, the steam generation tank, the insertion chamber, the steam cleaning tank and the like are depressurized by suction of the connecting portion, so that steam generation and steam cleaning can be performed at a low temperature. Further, by reducing the pressure of the steam cleaning tank, it is possible to quickly dry the object to be cleaned that has been steam cleaned.

Further, since the vapor is condensed by bringing it into contact with the cooling condensate without providing a special cooling mechanism, the condensing tank is not required and the mechanism is simplified to obtain an inexpensive apparatus. Is possible.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Steam generation tank 4 Solvent 6 Reflux cylinder 7 Filler 8 Upper end opening 10 Lid 11 Steam cleaning tank 13 Insertion chamber 14 Introduction opening / closing valve 15 Steam introduction pipe 16 Cleaning object 21 Steam outlet valve 22 Condensate 23 Storage tank 24 Outlet pipe 28 Steam outlet pipe 31 Circulation pipe 32 Circulation pump 33 Connection part

[Procedure amendment]

[Submission date] March 14, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 4

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

[0022]

[Embodiment] An embodiment of the present invention will be described below with reference to FIG. 1. (1) is a steam generation tank, to which an introduction pipe (2) is connected,
Connect the solvent introduction pipe (3) to this introduction pipe (2) and connect the solvent (4)
It is possible to introduce. Further, a heater (5) is installed inside the steam generation tank (1) to heat the solvent (4) to generate steam. The heater (5) uses electricity, heated steam, etc. as a heat source.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction content]

Next, in order to perform steam cleaning using the steam cleaning tank (11), the sealing lid (26) is opened and the steam cleaning tank is opened.
After storing the object to be cleaned (16) in (11), the sealing lid (26)
Close and seal. Then, the inlet opening / closing valve (14), the steam outlet valve (21) and the outlet valve (18) are opened, and the steam cleaning tank (11) is opened.
When connects the vapor generating bath (1) and the insertion chamber (13). By opening these valves, steam is sent to the steam cleaning tank (11), the object to be cleaned (16) and the steam come into contact with each other in the steam cleaning tank (11), and the condensation occurs on the surface of the object to be cleaned (16). By occurring
It becomes possible to clean the object to be cleaned (16) with steam.

Claims (8)

[Claims] 1. A steam generation tank for heating a solvent to generate steam is provided, one end of a reflux tube is connected to the steam generation tank so that steam can be introduced, and the other end of the reflux tube is inserted inside. A chamber is formed, and the outlet pipe whose one end is connected to this insertion chamber is connected to intersect with the circulation pipe whose both ends are connected to the storage tank for the cooling condensate, and the cooling condensate is circulated through a part of this circulation pipe. A circulation pump is provided to circulate the cooling condensate between the storage tank and the circulation pipe, and to cause the ejector to absorb at the connection between the outlet pipe and the circulation pipe.
A distillation regenerator characterized in that at this connection, the steam flowing from the outlet pipe and the cooling condensate are brought into contact with each other to condense the steam. 2. A steam generating tank for heating a solvent to generate steam is provided, one end of a reflux cylinder is connected to the steam generating tank so that steam can be introduced, and the other end of the reflux cylinder is inserted into the inside. A chamber is formed, and the outlet pipe whose one end is connected to this insertion chamber is connected to intersect with the circulation pipe whose both ends are connected to the storage tank for the cooling condensate, and the cooling condensate is circulated through a part of this circulation pipe. A circulation pump is installed to circulate the cooling condensate between the storage tank and the circulation pipe to cause the ejector to absorb at the connection between the outlet pipe and the circulation pipe and to introduce an on-off valve in the return pipe. A cleaning device using a distillation regenerator, which is characterized in that a steam cleaning tank is connected through a steam introducing pipe provided therein. 3. The cleaning apparatus using the distillation regenerator according to claim 2, wherein the insertion chamber is connected to a steam cleaning tank via a steam outlet pipe having a steam outlet valve. 4. The cleaning apparatus using the distillation regenerator according to claim 2, wherein the upper end of the reflux column is covered with a lid whose upper end opening is opened by a constant vapor pressure. 5. The distillation regenerator according to claim 1, wherein the upper end of the reflux tube is not covered with a lid and the inside is filled with a filling material for gas-liquid contact. 6. The storage tank is for carrying out immersion cleaning by inserting an object to be cleaned into a condensate.
Cleaning equipment using the distillation regeneration equipment of. 7. The distillation regenerator according to claim 1, wherein the insertion chamber and the steam generation tank decompress the inside by ejecting the ejector at the connecting portion. 8. The cleaning apparatus using the distillation regenerator according to claim 2, wherein the insertion chamber, the steam generation tank, and the steam cleaning tank decompress the inside by ejecting the ejector at the connecting portion.