JP2016016400A - Dry cleaning housing and dry cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dry cleaning housing capable of avoiding enlargement of housing constitution, suppressing a cost increase and easily discharging a part or the whole of cleaning medium.SOLUTION: When an internal space of a housing 4 is sucked by a suction means while an opening part 18 is closed with a cleaning object, an external air is caused to flow-in from an inlet 24 at a high speed to generate a whirling air current. Flake-like cleaning medium housed in the internal space is caused to fly by the whirling air current and comes into collision to the cleaning object on the opening part 18. The flight of the cleaning medium and the collision to the cleaning object are repeated and, thereby, the cleaning is performed. Removed stains and fragments of the cleaning medium are recovered to the suction port side via a separation plate 14. The separation plate 14 is composed of a plurality of movable separation plates 14a and each movable separation plate 14a is supported by a channel restriction member 52 such that one edge can be turned. When a separation plate pressing member 64 arranged on the suction port side is moved, each movable separation plate 14a is turned to the suction port side by an air current pressure of suction and the used cleaning medium in the housing is discharged to the suction port side.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a dry cleaning apparatus for cleaning a flying cleaning medium by bringing it into contact with or colliding with an object to be cleaned. Specifically, the cleaning medium can be applied to any part of the object to be cleaned, and is particularly suitable as a handy type. The present invention relates to a dry cleaning device and a dry cleaning housing used in the dry cleaning device.

In a soldering process using a flow solder tank in printed circuit board manufacturing, a jig for masking areas other than the area to be soldered is often used.
Such a mask jig (called a dip pallet or a carrier pallet) had to be cleaned regularly in order to reduce the accuracy of the mask by accumulating and fixing flux on the surface as it was repeatedly used. .
In general, since such cleaning is performed by immersing the mask jig in a solvent, a large amount of solvent is consumed, and an increase in cost cannot be avoided, and the burden on the operator and the environment is great.
A method of spraying a solvent onto an object to be cleaned in an apparatus without being immersed is also known, but there is no change in that a large amount of solvent is used.

As a technique for solving this problem, a dry cleaning device is known (for example, see Patent Document 1).
This device connects an intake means to a housing having an opening, and from the outside of the housing through a vent (inlet) provided separately from the opening in a state where the opening is closed with an object to be cleaned. It has a configuration that allows air to flow into the interior at a high speed to generate a swirling airflow inside the housing.
The surface of the object to be cleaned (the surface to be cleaned) is removed by repeating the operation of causing the cleaning medium to circulate and fly by the swirling airflow, and the cleaning medium collide with the object to be cleaned exposed to the opening. The
A separation plate having a large number of holes is arranged on the intake means side of the internal space of the housing so that removed dirt, small debris of the cleaning medium, etc. pass through the separation plate and are collected to the intake means side. It has become.
In other words, the cleaning medium having a size that contributes to cleaning is prevented from passing to the suction means side by the separation plate, and remains in the housing.

In this type of dry cleaning apparatus, generally, a cleaning medium having a lower hardness than the cleaning object is used as a cleaning medium in order to perform cleaning without damaging the base material of the cleaning object.
For this reason, the cleaning medium is gradually worn or chipped by repeatedly colliding with the object to be cleaned, so that the cleaning ability decreases with time.
In dry cleaning, the cleaning medium has a mechanism that cleans the edges (edges) and corners of the cleaning medium by cutting them into the dirty surface of the object to be cleaned, and when the edges and corners of the cleaning medium are crushed, The scraping action is reduced and the cleaning ability is reduced.
Even when a cleaning medium having a hardness higher than that of the object to be cleaned is used, if dirt adheres to the cleaning medium, the biting action on the dirty surface is reduced, and the cleaning ability is reduced.

As described above, the removed dirt and debris of the cleaning medium are selectively discharged from the internal space through the separation plate, but the cleaning medium has a size that does not pass through the separation plate. However, if the edges and corners are crushed or dirt is attached, the cleaning ability decreases.
The amount of the cleaning medium in the housing is reduced by discharging the cleaning medium debris and the like.
It is known that an appropriate quantity of the cleaning medium is required to maintain a good cleaning capability, and it is necessary to replenish a new cleaning medium as needed in accordance with a decrease in the quantity of the cleaning medium.

However, even if the cleaning medium is large enough to stay in the internal space, the unused cleaning medium is replenished to the cleaning medium whose edge and corners are crushed or dirt is attached to reduce the cleaning capacity. Even after adjustment, good cleaning ability cannot be expected.
In such a case, it is possible to obtain a better cleaning ability by intentionally discharging a part or all of the cleaning medium having a reduced cleaning ability remaining in the internal space and replacing it with a new cleaning medium. it can.

In Patent Document 1, the cleaning medium recovery means provided with the opening / closing valve is disposed so as to face the internal space of the housing, and the cleaning medium is accommodated in the cleaning medium recovery means using the energy of the swirling airflow, and then the cleaning medium is cleaned. A technique for preventing leakage of the cleaning medium from the opening by separating the opening from the object is disclosed.
According to this configuration, a part or all of the cleaning medium having a reduced cleaning ability can be intentionally collected, and the cleaning medium can be replaced by supplying a new cleaning medium in the housing after the recovery. .

  However, the method of providing the cleaning medium recovery means communicating with the internal space of the casing has problems that the casing configuration is increased in size and the cost cannot be avoided.

  The present invention has been made in view of such a current situation, and it is possible to avoid an increase in the size of the housing configuration, to suppress an increase in cost, and to easily discharge part or all of the cleaning medium. The main purpose is to provide the body.

  In order to achieve the above object, a dry cleaning housing of the present invention includes an internal space in which a cleaning medium is accommodated, an opening that communicates with the internal space and contacts a surface to be cleaned. Provided separately from the opening, an air passage for introducing external air into the internal space, an air inlet connected to the internal space and connected to the air intake means, and an object of a certain size or less Porous means for selectively passing from the internal space to the intake port side, and the internal space has the ventilation when the intake means draws in air in a state where the opening is closed by the surface to be cleaned. The air flowing in from the road has a shape that becomes a swirling airflow, and the opening is arranged so that the cleaning medium flying by the swirling airflow repeatedly collides with the surface to be cleaned, and the cleaning medium in the internal space is Cleaning medium discharge that can be discharged to the inlet side It has the means.

  According to the present invention, it is possible to avoid an increase in the size of the housing configuration, to suppress an increase in cost, and to easily discharge part or all of the cleaning medium.

It is a schematic sectional drawing which shows the structure which becomes the basis of the dry cleaning apparatus of this invention. It is a figure which shows the washing | cleaning operation | movement of the dry cleaning apparatus. It is a perspective view which shows the use condition of the dry cleaning apparatus. It is a schematic sectional drawing of the dry cleaning housing | casing which concerns on the 1st Embodiment of this invention, (a) is a schematic sectional drawing in the BB 'line of (b), (b) is AA' of (a). It is an outline sectional view in a line. FIGS. 5A and 5B are diagrams illustrating a replenishment structure of a cleaning medium replenishing unit, in which FIG. 9A illustrates a state during replenishment, FIG. 9B illustrates a state during non-replenishment, and FIG. It is a figure which shows the state to do. 2A and 2B are views showing a cleaning medium discharging unit according to the first embodiment of the present invention, in which FIG. 1A is a perspective view seen from the internal space side of the configuration during cleaning, and FIG. 2B is a perspective view seen from the intake side. It is. It is a figure which shows the structure at the time of discharging | emitting a cleaning medium, (a) is a side view, (b) is the perspective view seen from the internal space side. It is a figure which shows the structure of the washing | cleaning medium discharge | emission means in 2nd Embodiment, (a) is the perspective view seen from the internal space side of the structure in washing | cleaning, (b) is from the internal space side at the time of discharging | emitting a cleaning medium. FIG. It is a figure which shows the structure of the washing | cleaning medium discharge | release means in 3rd Embodiment, (a) is a disassembled perspective view of a separating plate, (b) is the front view seen from the internal space side of the structure in washing | cleaning. It is a figure which shows the structure at the time of discharging | emitting a washing | cleaning medium, (a) is a figure of the state which rotated the 1st member or the 2nd member to the middle, (b) is a figure which shows the state opened fully. It is a figure which shows the structure of the washing | cleaning-medium discharge | emission means in 4th Embodiment, (a) is a perspective view of a perforated plate, (b) is a perspective view of the structure during washing | cleaning. FIG. 5 is a diagram showing a configuration when discharging a cleaning medium, (a) is a diagram showing a state where the closing plate is moved a little, (b) is a diagram showing a state where the closing plate is moved about 90 degrees, and (c) is a fully opened state. It is a figure which shows the state which carried out.

Embodiments of the present invention will be described below with reference to the drawings.
The first embodiment will be described with reference to FIGS.
First, the basic configuration of the present invention will be described with reference to FIGS. This is an application example to a handy type dry cleaning apparatus.
An outline of the configuration of the handy type dry cleaning device 2 will be described with reference to FIG. FIG. 1A is a transverse sectional view taken along line AA, and FIG. 1B is a longitudinal sectional view taken along line BB.
The dry cleaning device 2 includes a dry cleaning casing (hereinafter also simply referred to as “casing”) 4 having a flying space (internal space) for the cleaning medium 5 therein, and an intake means 6 for reducing the pressure inside the casing 4. And.

The casing 4 is configured integrally with a cylindrical upper casing 4A as a casing main body and an inverted conical lower casing 4B. Here, the upper part and the lower part are convenient names on the drawing, and are not necessarily related to the upper and lower sides on the actual machine.
The lower housing 4B is integrally provided with an intake port 8 at the top of the conical shape, and functions as a suction duct.
The suction means 6 has a flexible suction hose 10 connected at one end to the suction port 8 and a suction device 12 connected to the other end of the suction hose 10.
As the suction device 12, a household vacuum cleaner, a vacuum motor, a vacuum pump, or a device that indirectly generates a low pressure or a negative pressure by pumping fluid can be used as appropriate.
Note that the positional relationship between the upper and lower surfaces of the member is merely a reference on the drawing.

The bottom surface of the upper housing 4A is a fitting recess 4A-1 that joins the upper end of the lower housing 4B, and the upper housing 4A and the lower housing 4B are separable. The upper surface 4A-2 of the upper housing 4A is sealed.
A porous separation plate 14 is provided as a porous means at the boundary between the bottom surface of the upper housing 4A and the lower housing 4B.
The separation plate 14 is a plate-like member having holes such as punching metal.
The separation plate 14 prevents the cleaning medium 5 from moving to the lower housing 4B side (intake port side) when the internal space is sucked.

In FIG. 1A, a part of the display of the separation plate 14 is omitted. The size of the cleaning medium 5 is exaggerated for easy understanding.
The porous means may be a porous shape having many pores having a size that allows air and dust (removed material removed from the object to be cleaned) to pass through without passing through the cleaning medium 5.
The porous means has a filter function of selectively passing an object of a certain size or less from the internal space to the intake port side, and allows not only the removed object but also a cleaning medium that has become smaller by being cracked or crushed.
As the porous means, a slit plate, a net, or the like may be used, and a resin, a metal, or the like may be freely selected as long as the material has a smooth surface with a small contact resistance with the cleaning medium.
The porous means is arranged as a plane orthogonal to the swirling axis of the swirling airflow. Thereby, there exists an effect which prevents retention of the washing | cleaning medium 5 by an airflow flowing in the direction along a porous means.
In order to suppress the attenuation of the swirling airflow, it is desirable that the inner surface of the housing is smooth without steps and irregularities.

The porous means is arranged on the surface along the swirling airflow, so that the cleaning medium adsorbed on the surface can be re-flighted.
The material of the housing 4 is not particularly limited, but is preferably made of metal such as aluminum or stainless steel in order to prevent wear due to adhesion of foreign matter or friction with the cleaning medium, but a resinous material may be used. it can.
A cylindrical channel restricting member 16 is provided as a part of the casing at the center of the upper casing 4A so that the cylindrical axis of the upper casing 4A is a common axis. The lower end is fixed to the separation plate 14.
The channel restricting member 16 is provided for the purpose of improving the flow velocity by reducing the channel cross-sectional area of the swirling airflow.
A ring-shaped swirling airflow moving space (internal space as a flying space for the cleaning medium) having a smooth wall surface is formed in the upper housing 4A by the flow path restriction member 16.

Depending on the shape of the upper casing 4A, the central axis of the flow path restricting member 16 and the central axis of the upper casing 4A do not necessarily have to be common, and may be eccentric if a ring-shaped space can be secured. good.
An opening 18 is formed in a part of the side surface of the upper housing 4A to allow the cleaning medium 5 flying with a swirling airflow to contact or collide with an object to be cleaned.
The upper housing 4A has a cylindrical shape whose height is extremely small with respect to the diameter, and an opening 18 is provided in a part of a side surface forming the height.
As shown in FIG. 1B, the entire casing 4 has a layout in which the outer peripheral portion other than the opening 18 largely escapes (leaves) from the object 20 to be cleaned, that is, local contact with the object 20 to be cleaned, in other words, This increases the degree of freedom of pinpoint cleaning.

The opening 18 has a shape obtained by cutting the side surface of the upper housing 4A by a flat cross section parallel to the cylindrical axis, and has a rectangular shape when viewed from a direction orthogonal to the cylindrical axis.
An air inlet 22 is formed on a side surface of the upper housing 4A, and an inlet 24 as a ventilation path is connected to the air inlet 22 from the outside of the upper housing 4A so as to be integrated with the upper housing 4A. It is fixed.
The inlet 24 is set substantially parallel to the separation plate 14, and the ventilation direction thereof is inclined with respect to the radial direction of the upper housing 4 </ b> A, and the extension line at the center of the ventilation path is positioned so as to reach the opening 18. Yes.
The inlet 24 has a width extending in the height direction of the upper housing 4A.
One inlet 24 having a diameter or width smaller than the height of the upper housing 4A may be arranged, or a plurality of single inlets may be arranged in the height direction.

As shown in FIG. 1, when the opening 18 is in contact with the surface to be cleaned of the object 20 to be closed, the inside of the housing 4 becomes a closed space and is introduced into the internal space 26 via the inlet 24. Air is sucked into the intake port 8 side.
For this reason, outside air flows from the inlet 24 at a high speed, and this high-speed air flow accelerates the cleaning medium 5 toward the opening 18 and generates a swirling air flow 30. The annular inner space 26 is also a swirl flow path.
The swirling airflow generated when the closed space is formed has the effect of blowing away the cleaning medium adsorbed and held on the separation plate 14 by the negative pressure due to the intake air and re-flying it.
The opening 18 has an area large enough to bring the internal pressure at the air inlet 22 to atmospheric pressure or in the vicinity thereof when the opening 18 is separated from the cleaning target 20 and opened.
Further, the air inlet 22 is also arranged at a position where the atmospheric pressure or the vicinity thereof tends to be reached when the opening 18 is opened.

By providing such a configuration, while the dry cleaning device 2 is not applied to the object to be cleaned, the air inlet 22 approaches the atmospheric pressure, so that the differential pressure with the outside decreases, and the airflow that flows in as a result. Is dramatically reduced.
On the other hand, since the airflow flowing in from the opening 18 increases, the cleaning medium 5 can be prevented from leaking out of the housing 4.
In addition, when the opening 18 is opened, the total amount of airflow flowing in is 2 to 3 times as compared with when the opening 18 is closed, so that the lamellar cleaning medium is adsorbed on the porous means. , Do not leak out of the case without flying again.
This is called a cleaning medium adsorption effect when the opening is opened.

Although the cleaning medium 5 is a collection of flaky cleaning pieces, it is also used herein as a single flaky cleaning piece.
The flaky cleaning medium is a thin piece having an area of 1 mm ² or more and 200 mm ² or less.
The material of the cleaning medium is a film made of a durable material such as polycarbonate, polyethylene terephthalate, acrylic, or cellulose resin, and the thickness is 0.02 mm to 1.0 mm.
However, depending on the object to be cleaned, it may be effective to change the thickness, size and material of the cleaning medium, and the use of these cleaning media is also included in the scope of the present invention. It shall not be caught.
The cleaning media is not limited to resin, but it is thin, lightweight, and easy to fly even with thin pieces such as paper and cloth, or with minerals such as mica, ceramics, glass, and metal foil. Can be used.

The ring-shaped internal space 26 of the upper housing 4 </ b> A is a space in which the cleaning medium 5 is accommodated, and a space for the cleaning medium 5 to fly due to the swirling airflow and collide with the object to be cleaned 20 exposed at the opening 18. It is.
The interior 34 of the flow path restriction member 16 is a space where the swirling air current does not act.

A cleaning operation (hereinafter also referred to as “cleaning operation”) by the dry cleaning apparatus 2 configured as described above will be described with reference to FIG.
In FIG. 2, the thickness of the member is omitted, and the interior 34 as a static space is indicated by hatching for easy understanding.
2B shows a state where the opening 18 is separated from the object 20 to be cleaned and the opening 18 is opened to perform intake, and FIG. 2A shows the state where the opening 18 is applied to the object 20 to be cleaned. Indicates a blocked state.
Prior to the cleaning operation, the cleaning medium 5 is supplied into the housing 4.
As a method for supplying the cleaning medium, a predetermined amount of cleaning medium may be sucked from the opening 18 while the suction device 12 is operating, or may be supplied from the inlet 24 while the opening 18 is closed. Good.

The cleaning medium 5 supplied into the housing 4 is sucked by the separation plate 14 and held in the housing 4 as shown in the lower diagram of FIG.
Since the inside of the housing 4 is in a negative pressure state due to intake air, air outside the housing flows into the housing 4 through the inlet 24, but the flow in the inlet 24 at this time is small in both flow velocity and flow rate. The swirling airflow 30 generated in the housing 4 does not reach the strength for causing the cleaning medium 5 to fly.
When the cleaning medium 5 is supplied and held in the housing 4, as shown in FIG. 2A, the opening 18 is put in a closed state by hitting the surface of the cleaning object 20 to be cleaned.

When the opening 18 is closed, intake from the opening 18 stops, so the negative pressure in the housing 4 increases at a stretch, and the amount of air sucked through the inlet 24 and the flow velocity increase and are rectified in the inlet 24. A high-speed air flow is blown out into the housing 4 from the inlet outlet (air inlet 22).
The blown air flow peels off the cleaning medium 5 held on the separation plate 14 and flies toward the surface of the cleaning target 20 exposed at the opening 18.
The air flow becomes a swirling air flow 30 and flows in an annular shape along the inner wall of the housing 4, and a part of the air flow is sucked by the suction means 6 through the hole of the separation plate 14.

When the swirling airflow 30 that has flowed in an annular shape inside the housing 4 returns to the outlet portion of the inlet 24, the airflow entering from the inlet 24 is accelerated while joining the swirling airflow 30.
In this way, a stable swirling airflow 30 is formed in the housing 4.
The cleaning medium 5 swirls (circulates and flies) in the housing 4 by the swirling airflow, and repeatedly collides with the surface of the cleaning object 20.
Due to the impact caused by the collision, the dirt is separated from the surface of the cleaning object 20 in the form of fine particles or powder.
The separated dirt is discharged to the outside of the housing 4 by the suction means 6 through the hole of the separation plate 14.

The swirling airflow 30 formed in the housing 4 has a swirling axis that is orthogonal to the surface of the separation plate 14 and is an airflow parallel to the surface of the separation plate 14.
For this reason, the swirling air flow 30 is sprayed from the lateral direction onto the cleaning medium 5 sucked on the surface of the separation plate and enters between the cleaning medium 5 and the separation plate 14, and the cleaning medium 5 sucked on the separation plate 14 is absorbed. An effect of peeling off from the separation plate 14 and flying again occurs.
Further, since the opening 18 is blocked and the negative pressure in the upper housing 4A increases and becomes close to the negative pressure in the lower housing 4B, the force for sucking the cleaning medium 5 against the surface of the separation plate 14 is also reduced. As a result, the cleaning medium 5 can fly more easily.
Since the swirling airflow 30 is accelerated in a certain direction, a high-speed airflow is easily generated, and a high-speed flying motion of the cleaning medium 5 is also facilitated.
The cleaning medium 5 that swivels at high speed is difficult to be sucked by the separation plate 14, and the dirt attached to the cleaning medium 5 is easily separated from the cleaning medium 5 by centrifugal force.

FIG. 3 shows a practical example of cleaning by the dry cleaning device 2 described above.
The object to be cleaned is a dip pallet used in the above-described flow solder bath process, and is denoted by reference numeral 100.
In the dip pallet 100, mask openings 101, 102, 103 are opened, and the flux FL is deposited and solidified around the holes of the mask openings. This accumulated and solidified flux FL is dirt to be removed.
The base portion (portion of the intake port 8) of the lower housing 4B is grasped with the hand HD, and the opening 18 of the housing 4 is pressed against the portion to be cleaned in the intake state.

Before the opening 18 is pressed against the part to be cleaned, the inside of the housing 4 is sucked and the cleaning medium 5 is sucked by the separation plate 14 (cleaning medium adsorption effect), so the opening 18 faces downward. However, the cleaning medium 5 does not leak from the housing 4 to the outside.
Of course, after the opening 18 is pressed against the site to be cleaned, the inside of the housing becomes airtight, and the cleaning medium does not leak out.

When the opening 18 is pressed against the portion to be cleaned, the inflow airflow from the inlet 24 increases rapidly, a strong swirling airflow 30 is generated in the housing 4, and the cleaning medium 5 sucked by the separation plate 14 is caused to fly.
The cleaning medium 5 collides with the flux FL adhered and solidified on the site to be cleaned of the dip pallet 100, and the flux FL is thereby removed.
As described above, the operator can hold the base of the lower housing 4B in the hand HD, move it with respect to the dip pallet 100, sequentially move the portion to be cleaned, and remove all the adhered and solidified flux FL. .
In the state of FIG. 3, the peripheral portion of the mask opening 101 of the dip pallet 100 is cleaned, and the peripheral portions of the mask openings 102 and 103 are in the process of cleaning.
Even if the opening 18 is moved away from the portion to be cleaned when the opening is moved with respect to the portion to be cleaned, the cleaning medium 5 does not leak out of the housing due to the above-described cleaning medium adsorption effect, so the number of cleaning media is maintained. In addition, the cleaning performance is not deteriorated due to the decrease in the amount of the cleaning medium.

During repeated use, the cleaning medium 5 is gradually destroyed by an impact caused by a collision with the cleaning site, and is collected by the suction device 12 together with the flux (dirt) removed from the dip pallet 100 at the site to be cleaned.
For this reason, when the dry cleaning device is used for a long time, the amount of the cleaning medium held in the housing is reduced. In such a case, a new cleaning medium group is supplied into the housing 4.

The cleaning medium is replenished by a cleaning medium replenishing unit provided integrally with the housing 4. The configuration will be described with reference to FIGS.
Portions that are the same as or equivalent to the above basic configuration are indicated by the same reference numerals as appropriate. Since the cleaning operation and the flying principle of the cleaning medium are the same as the basic configuration described above, description thereof will be omitted as appropriate.

As shown in FIG. 4, the dry cleaning housing 4 in the present embodiment includes a cylindrical cleaning medium supply unit 50 at the center of the housing.
The cleaning medium replenishing means 50 includes a cylindrical flow path limiting member 52 that defines the swirling axis of the swirling air flow 30 as in the flow path limiting member 16, and a cylindrical shape that is inserted into the flow path limiting member 52 from the outside of the housing. The cleaning medium holding container 54.
The cleaning medium holding container 54 accommodates the cleaning medium 5, and the inside serves as a cleaning medium holding space.

A supply port 52a for supplying the cleaning medium 5 to the internal space 26 is formed on the bottom surface side of the flow path restriction member 52, that is, the separation plate 14, and the position is shifted in the circumferential direction from the supply port 52a. In addition, a ventilation portion 52b that allows airflow to pass without passing through the cleaning medium 5 is formed.
The cleaning medium holding container 54 includes a main body 56 attached to the flow path restriction member 52, and a suction part 58 that extends from the main body 56 in the direction of the pivot axis 60 and gradually decreases in diameter toward the tip. Has been.
The suction part 58 has a suction port 58a at the tip.
A communication port 56 a that communicates with the supply port 52 a when the cleaning medium holding container 54 is rotated around the pivot axis 60 and faces the supply port 52 a is formed on the bottom surface side of the main body 56. The communication port 56a can also face the ventilation portion 52b.
An inclined surface 56b is formed on the bottom surface side (separation plate 14 side) of the main body portion 56 so that the cleaning medium 5 in the cleaning medium holding space can be easily moved to the communication port 56a.

The state shown in FIG. 4 shows a non-replenishment position where the communication port 56a does not oppose either the supply port 52a or the ventilation part 52b and is blocked by the flow path restriction member 52, as is clear from FIG. ing.
The flake-shaped cleaning medium flies within the housing and collides with the object to be cleaned, so that it is gradually worn or damaged, and the resulting small pieces are discharged via the separating plate 14 to the suction device side.
For this reason, the cleaning medium inside the housing decreases with time, and the degree of reduction of the cleaning medium varies depending on the material and size of the cleaning medium, the suction force of the suction means, and the like.

When the cleaning medium replenishment timing comes, the operator rotates the cleaning medium holding container 54 to the left side in the drawing from the non-replenishment position shown in FIG. 4 to connect the replenishing port 52a and the communication port. 56a is made to oppose.
When the replenishing port 52a and the communication port 56a face each other, the suction port 58a communicates with the inside of the casing, and a suction airflow is generated in the cleaning medium holding container 54 so that the cleaning medium 5 in the cleaning medium holding container 54 is inside the casing. It is replenished in the space and flies with the swirling airflow 30 to contribute to cleaning.
When stopping the replenishment of the cleaning medium 5, as shown in FIG. 5B, the cleaning medium holding container 54 is rotated to a non-replenishment position where the communication port 56a does not face either the replenishing port 52a or the ventilation part 52b. Let

When replenishing the cleaning medium 5 into the cleaning medium holding container 54, as shown in FIG. 5C, the suction port 58 of the cleaning medium replenishing means 50 is prepared with the communication port 56a facing the vent 52b. Inhale close to the wash media group.
Similarly to the case shown in FIG. 5A, the suction port 58a communicates with the inside of the housing, and a suction airflow is generated in the cleaning medium holding container 54, but the sucked cleaning medium 5 cannot pass through the ventilation part 52b. Therefore, it remains in the cleaning medium holding container 54.
When the replenishment is completed, the cleaning medium holding container 54 is rotated and set to the non-replenishment position or the replenishment position.

In the conventional blasting method, since the blasting medium collides with the object to be cleaned only once, it is necessary to continuously supply the blasting device without interruption.
In contrast, in dry cleaning in which the cleaning medium circulates and flies, the cleaning medium repeatedly and repeatedly collides with the object to be cleaned due to the swirling air flow. There is an advantage that it can be suppressed.
However, when cleaning is performed for a long time, in order to maintain an appropriate amount of the cleaning medium, it is necessary to replenish the amount of the cleaning medium that is reduced by wear periodically or intermittently.
By replenishing the cleaning medium at a timing when replenishment is required, the cleaning ability can be maintained substantially constant without interrupting the cleaning operation.
As described above, instead of merely replenishing a new cleaning medium, a part or all of the cleaning medium remaining in the housing is intentionally discharged and replaced with a new cleaning medium to obtain an appropriate amount. Therefore, it is possible to suppress a decrease in cleaning ability.

Based on FIG.6 and FIG.7, the washing | cleaning medium discharge | emission means of the dry-type cleaning housing | casing which concerns on this embodiment is demonstrated.
The cleaning medium discharge means 62A in the present embodiment includes a separation plate 14 composed of a plurality of movable separation plates 14a, a ring-shaped separation plate pressing member 64 disposed on the inlet side of the separation plate 14, and the housing 4. And an operation lever as an operation member (not shown) that moves the separation plate pressing member 64 in the direction of the pivot axis.
The cleaning medium discharge means 62A has a configuration capable of discharging the cleaning medium in the internal space to the intake port side.

Each movable separating plate 14a is pivotally supported so that one side of the two radially extending sides can be rotated to the inlet side with respect to the flow path restriction member 52. That is, the space between the internal space and the air inlet is openable and closable.
The flow path limiting member 52 is formed with a stopper (not shown) that contacts the other side of the movable separation plate 14a and stops the rotation of the movable separation plate 14a at a predetermined angle.
The structure which supports the movable separation plate 14a so that rotation is possible may be provided in the housing | casing side, and may be provided in both a housing | casing and the flow-path restriction member 52. FIG. The stopper configuration is the same.

FIG. 6 shows a state in which each movable separation plate 14a is closed. In other words, the rotation of each movable separation plate 14 a is restricted by the separation plate pressing member 64.
This state is a configuration that functions as the separation plate 14 during cleaning.
When discharging the cleaning medium having a reduced cleaning capacity in the internal space of the housing 4, as shown in FIG. 7, the separation plate pressing member 64 is moved to the intake port side (cleaning medium discharge direction or swivel axis) by an operation lever. Move in the direction of the heart).

When the separation plate pressing member 64 is moved, each movable separation plate 14a is rotated to the intake port side by the pressure of the airflow caused by the intake air, and the part of the separation plate 14 is opened as shown in FIG. Is formed.
If the intake is continued in this state, the cleaning medium is sucked to the intake port side without being held by the separation plate 14, and all the cleaning medium in the housing is discharged.
At this time, when the inlet 24 is closed, the swirling airflow disappears, so that the cleaning medium can be discharged (collected) more efficiently.

Since the separation plate pressing member 64 is formed in a ring shape, it hardly prevents the cleaning medium from being discharged.
The separation plate pressing member 64 can arbitrarily set the movable separation plate 14a at the open / close position by moving in the direction of the pivot axis.
After the cleaning medium is discharged, each movable separation plate 14a is closed and functions as one separation plate 14 by operating the operation lever to move the separation plate pressing member 64 in the reverse direction.

When the rotation angle of each movable separation plate 14a is not limited, the movable separation plate 14a is parallel to the direction of the pivot axis and it is difficult to set the separation plate pressing member 64 to the closed position.
In order to reliably open and close each movable separation plate 14a, the rotation of each movable separation plate 14a is set to stop at a predetermined angle (an angle that can be returned to the closed position by the separation plate pressing member).
In the present embodiment, the entire cleaning medium is discharged (replacement of the entire amount), but it is also possible to discharge a part by moving the separating plate pressing member 64 for a short time and returning it to the original state.
After the cleaning medium is discharged, an appropriate amount of new cleaning medium is replenished in the housing by the cleaning medium replenishing means 50 with each movable separation plate 14a closed.

In this embodiment, the cleaning medium replenishing means 50 is used for replenishment. However, the cleaning medium replenishing means 50 is not provided, but the suction medium may be replenished by suction from the opening 18 or may be supplied from the inlet 24. Good.
In the present embodiment, each movable separation plate 14a is configured to be rotated by an air flow caused by intake air. However, the movable separation plate 14a is configured to be always opened by an urging means such as a torsion spring, and is pressed and closed by the separation plate pressing member 64. May be.
Further, although the separation plate pressing member 64 is moved manually by the operation lever, it may be electrically driven. In this case, the cleaning power can be automatically maintained constant by adding a mode in which the cleaning medium is automatically discharged and replenished at regular intervals (the same applies to other embodiments).

  As described above, the separation plate as an element constituting the dry cleaning housing has been improved and the cleaning medium is discharged by the air flow by the intake air, so that the cleaning medium recovery means is newly added as in the past. Compared with this, it is possible to contribute to downsizing and cost reduction of the configuration.

A second embodiment will be described with reference to FIG. The same parts as those of the above-described embodiment are denoted by the same reference numerals, and the description on the configuration and the function already described is omitted as appropriate (the same applies to other embodiments below).
The cleaning medium discharge means 62B in the present embodiment includes a movable separation plate 14b that is a part of the separation plate 14, and an operation lever (not shown) that is provided on the outer surface of the housing 4 and opens and closes the movable separation plate 14b. Yes.
When discharging the cleaning medium, the operating lever is operated to displace the movable separation plate 14b toward the inner space as shown in FIG. 8B, thereby forming a discharge path.
Since the movable separation plate 14b functions to guide the swirling airflow toward the intake port, the cleaning medium rides on the airflow and is discharged to the intake port.

The movable separation plate 14b may be displaced toward the intake port to form a discharge path. However, if it is configured to be displaced toward the internal space as described above, the movable separation plate 14a stops the swirling airflow. Since it is located, the direction of the swirling airflow can be forcibly changed, and the discharge efficiency is good.
In the present embodiment, since a part of the separation plate 14 is opened and closed, the configuration can be simplified and the cost can be reduced as compared with the first embodiment.

A third embodiment will be described based on FIGS. 9 and 10.
As shown in FIG. 9A, in the separation plate 14 in the present embodiment, the shielding surface portions 14d and the space portions 14e are alternately formed in the circumferential direction on the ring member 14c fitted to the flow path restriction member 52. The first member 66 and the second member 68 in which the porous surface portions 14f and the space portions 14e are alternately formed in the circumferential direction on the ring member 14c are stacked in the direction of the pivot axis.
The cleaning medium discharge means 62C in the present embodiment is provided on the outer surface of the separation plate 14 and the casing 4, and rotates either one of the first member 66 and the second member 68 around the pivot axis (not shown). And an operation lever.

During the cleaning, as shown in FIGS. 9B and 9C, the first member 66 and the second member 68 are arranged so that the shielding surface portion 14d and the porous surface portion 14f do not overlap each other.
When the cleaning medium is discharged, as shown in FIG. 10, the operation lever is operated to rotate one of the first member 66 and the second member 68 around the pivot axis relatively. A road can be formed.
FIG. 10B shows a state in which the discharge path is maximum, and the porous surface portion 14f is hidden behind the shielding surface portion 14d.
In the present embodiment, since the discharge paths are evenly allocated in the region of the separation plate 14, the efficiency of total discharge of the cleaning medium is improved as compared with the second embodiment.
Since the discharge path for the cleaning medium can be formed by the rotation of the member constituting the separation plate 14 around the pivot axis, it is advantageous in terms of space compared to the above embodiments, and the configuration can be further downsized.

A fourth embodiment will be described based on FIGS. 11 and 12.
As shown in FIG. 11, the separation plate 14 in the present embodiment is composed of a plurality of perforated plates 70 stacked in the discharge direction of the cleaning medium.
Each perforated plate 70 includes a ring-shaped support member 14g fitted to the flow path restricting member 52 and a pair of perforated plate main body portions 14h fixed at opposed positions in the radial direction of the support member 14g.
Each perforated plate 70 is divided into two groups, and a closing plate 72 is fixed to one perforated plate 70 in each group.
The perforated plates 70 are connected in a fan shape, and as shown in FIG. 12, when one closing plate 72 is moved in the circumferential direction, the other groups are also moved in synchronization to form a cleaning medium discharge path. The

The cleaning medium discharging means 62D in the present embodiment has a plurality of perforated plates 70 and an operation lever (not shown) that is provided on the outer surface of the housing 4 and moves one closing plate 72 around the pivot axis. .
In this embodiment, there is an advantage that the area of the discharge path can be increased, and improvement in discharge efficiency can be expected.

The preferred embodiments of the present invention have been described above. However, the present invention is not limited to such specific embodiments, and unless specifically limited by the above description, the present invention described in the claims is not limited. Various modifications and changes are possible within the scope of the gist.
The effects described in the embodiments of the present invention are merely examples of the most preferable effects resulting from the present invention, and the effects of the present invention are limited to those described in the embodiments of the present invention. is not.

DESCRIPTION OF SYMBOLS 2 Dry cleaning apparatus 4 Dry cleaning housing | casing 5 Cleaning medium 6 Air intake means 8 Air inlet 14 Separation plate 14a, 14b as a porous means 14d Movable separation plate as a divided piece 14d Shielding surface part 14e Space part 14f Porous surface part 14g Support member 18 Opening part DESCRIPTION OF SYMBOLS 20 Cleaning object 24 Inlet as ventilation path 26 Internal space 62A, 62B, 62C, 62D Cleaning medium discharge means 64 Separation plate pressing member as divided piece pressing member 66 First member 68 Second member 70 Perforated plate

JP2012-81422A

Claims (7)

An internal space in which the cleaning medium is accommodated;
An opening that communicates with the internal space and contacts the surface to be cleaned;
A ventilation path provided separately from the opening, for introducing external air into the internal space;
An intake port communicating with the internal space and connected to the intake means;
Porous means for selectively passing an object of a certain size or less from the internal space to the inlet side;
With
The internal space has a shape in which air flowing from the air passage becomes a swirling airflow when sucked by the suction means in a state where the opening is closed by the surface to be cleaned,
The opening is arranged so that the cleaning medium flying by the swirling airflow repeatedly hits the surface to be cleaned,
A dry cleaning housing having cleaning medium discharge means capable of discharging the cleaning medium in the internal space to the intake port side. The dry cleaning housing according to claim 1,
A dry cleaning housing in which the cleaning medium discharge means has a configuration for opening and closing at least a part of the porous means. The dry cleaning housing according to claim 2,
The porous means is composed of a plurality of divided pieces, and at least a part of each divided piece is provided so as to be openable and closable between the internal space and the air inlet.
A dry cleaning housing having a divided piece pressing member capable of arbitrarily setting the divided piece at an open / close position. The dry cleaning housing according to claim 2,
The porous means includes a first member in which shielding surfaces and spaces are alternately formed in a circumferential direction, and a second member in which porous surfaces and spaces are alternately formed in a circumferential direction. It has a structure stacked in the discharge direction,
A dry cleaning casing in which a discharge path for a cleaning medium is formed by overlapping the space of the first member and the second member by relatively rotating the first member and the second member. . The dry cleaning housing according to claim 2,
A dry cleaning casing in which the porous means is formed by laminating a plurality of porous plates in the discharge direction of the cleaning medium, and the porous plates are connected to each other and can be folded in the circumferential direction. In the dry cleaning housing according to any one of claims 1 to 5,
A dry cleaning housing having an operation member for opening and closing the porous means outside the housing.   A dry cleaning apparatus comprising the dry cleaning housing according to claim 1, the air suction unit, and the cleaning medium.

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