EP0853157B1 - Apparatus for removing foreign matter from textile flat structure and drying the same - Google Patents

Description

The present device relates to a Device for removing foreign matter from a textile Fabrics and for drying the same by means of of an air flow, which device is connected to a compressed air source has to be connected compressed air supply pipe, which is formed in a machining head.

To remove dirt from textile fabrics, may these clothes be in a cleaning company or like these blanks for clothes or woven goods in industrial Being textile-operated is known among other things Action a cleaning liquid against the one to be cleaned Injected area and then dried this place. The cleaning liquid can have different water Temperatures, the water if necessary Cleaning additives or slowly evaporating solvents be added. For cleaning, the cleaning liquid, e.g. Water, in the form of a sharp Sprayed against the area to be cleaned to the Loosen dirt and when passing through e.g. tissue to get carried away.

For this, a respective piece of textile is placed on a permeable work sheet, for example a Strainer or a grid. This working document can be part a table under which some are known Executions a suction train is created. But it can also, especially with large textile pieces in industrial companies are part of a so-called display board his.

The wetted by the cleaning liquid Spot must be dried after soaking.

The cleaning liquid must do so removed as quickly as possible from the wetted area become. If the dwell time is too long, the cleaning liquid the fibers of the textile fabric affect negatively or harmful effects possible finishes, dyes, etc. Further can the known edge formations, visible rings around the wetted area arise, which is generated by dirt particles be countered by the water on and in the fabric transported the outermost edge of the moist area and be deposited. Can only continue with a dry Pieces of cloth can be found for a dirt stain has been completely removed or whether a repeat Treatment using the cleaning liquid got to.

It is therefore necessary to wet the concerned or moist area by means of a heated, if necessary Air jet to dry. The air jet should pass through flow through the fabric and thereby the in the fabric as Liquid present in the foreign substance with the dissolved Take dirt with you and remove it from the fabric.

There are various methods and devices for Cleaning of textile fabrics and also for Drying the same became known. It will do this on EP-A-0 325 192 and EP-A-0 687 762, being expressly to the appropriate disclosures is pointed out.

When drying, a subset of the air discharged from an air supply device through the Fabric through. Another subset of the air escapes sideways between the surface of the fabric and the Air supply device and accordingly tears drops of liquid and loosened dirt. Obviously an appearance of the sprayed away liquid with the dissolved Dirt on areas around the area to be cleaned undesirable. Likewise is an excessive side Spread the liquid in the fabric undesirable.

Devices have been developed that such spreading, be it by ricocheting from the fabric surface or by walking through the Counteract the fabric. Such a device is e.g. in EP-A-0 415 283.

In the known devices for drying the surface wetted by a cleaning liquid Textile structures therefore escape a subset of the Drying air between the textile structure and one on top of it attached device for dispensing drying air sideways and tears part of the cleaning liquid with the loosened dirt. This is special the case with tightly woven fabrics. At least one Part of the cleaning liquid spraying sideways hits the textile fabric again, which is undesirable is.

The invention seeks to remedy this. The Invention as characterized in the claims solves the task of a device for removing To create foreign substances from a textile fabric, which allows easier and faster work and especially a side spread and side Splashing away treatment liquid and dissolved Prevents dirt.

The advantages achieved by the invention are essentially to be seen in the fact that treatment liquid and loosened dirt when applying the Drying air guided away from the fabric. In order to is an uncontrolled lateral spreading of the Liquid in the fabric and a splash of liquid with loosened dirt on removed from the treatment site Places impossible.

Fig. 1 einen Schnitt durch eine bevorzugte Ausführung der Erfindung;

Fig. 2 eine Ansicht von unten auf den Bearbeitungskopf der in der Fig. 1 gezeigten Vorrichtung;

Fig. 3 die Vorrichtung nach Fig. 1 und Fig. 2 zusammen mit einem Reinigungsflüssigkeits-Abgabekopf einer Fleckenreinigungspistole, und

Fig. 4 eine Fleckenreinigungspistole mit einer fest montierten Druckluft-Abgabevorrichtung.

In the following, the invention is explained in more detail, for example, with the aid of drawings illustrating the ways of implementation. It shows:

1 shows a section through a preferred embodiment of the invention.

Fig. 2 is a bottom view of the machining head of the device shown in Fig. 1;

3 shows the device according to FIGS. 1 and 2 together with a cleaning liquid dispensing head of a stain cleaning gun, and

Fig. 4 is a stain cleaning gun with a fixed compressed air dispenser.

The foreign substances that come from the textile fabric to be removed are those against the fabric sprayed cleaning liquid, if necessary Water with a dirt solvent as well as the dissolved Dirt, with what foreign substances the textile fabric more or less saturated before drying are.

The device has a processing head (1) on the compressed air inlet in the form of a pipe socket (2) contains. This pipe socket (2) is for connection with a compressed air supply hose (3), the according to known designs for a compressed air source (21) (Fig. 3) leads. There is a slot nozzle in the processing head (1) (4) through which through the pipe socket (2) inflowing air flows out.

Fig. 1 shows the device in the working position. The area of the textile to be cleaned Fabric (5), e.g. a garment, a blank for items of clothing or a large web, is on a permeable base (6), e.g. a sieve or a grid. This strainer or grid is, depending on the design and known training, Part of a so-called display board (usually in the case of large-area webs) or part of a cleaning table (for smaller pieces to be cleaned). Often is under the sieve or grid in a known manner Induced suction.

From Fig. 1 it can be seen that the the air stream emerging from the slot nozzle (4) at least approximately strikes the area to be cleaned vertically.

On a longitudinal edge of the slot nozzle (4) closes a planar support surface (7) of the machining head (1). In operation, the processing head (1) lies with the planar contact surface (7) directly on the treated one Section of the textile fabric (5).

With the planar contact surface (7) opposite The edge of the slot nozzle (4) is a slanted one Surface section (8) of the machining head (1) is formed, which forms a recess in the processing head (1). This Recess is on both sides by sections (9), (9a) of side walls of the machining head (1) completed (see also Fig. 4).

The free (lower) edges (10) of the wall sections (9), (9a) are aligned with the planar section (7). Thus, these free edges (10) lie together during operation with the planar section (7) on the area to be cleaned of the textile fabric, with which immediately there is a recess next to the slot nozzle (4), which forms a wedge-shaped flow channel section (11), which in operation, as will be shown, as Jet nozzle area works.

This flow channel section (11) follows in seen in the direction of flow, an acceleration chamber (12). The acceleration chamber (12) has a helical shape running interior, whose cross-sectional dimension decreases steadily in the direction of flow. she has an inlet opening (13) through on both sides further sections (14), (14a) of the side walls of the machining head (1) is complete. The lower edges (15) (Fig. 4) of these further sections (14), (14a) are aligned also with the planar surface section, like this with the lower edges (10) of the wall sections (9), (9a) the case is.

The acceleration chamber (12) has one outer wall (16) running in a helical shape, the lower one of which free edge (17) also with the planar contact surface flees.

Thus, the support surface (7), the lower Edges (10) of the wall sections (9), (9a) forming the flow channel section (11) limit laterally, the lower edges (15) of the wall portions (14), (14a) that the acceleration chamber (12) limit laterally and the free edge (17) of the outer wall (16) of the acceleration chamber (12) in a common Level.

It can thus be seen that when the machining head (1) in operation on a to be processed Piece of fabric is placed, one by the above Components completely closed chamber is present "below" is completed by the piece of fabric.

In the interior of the acceleration chamber (12) a helical partition (23) is arranged, see Fig. 1. This partition prevents direct Connection between the inlet opening (13) and the outlet opening (18), so that a dripping back from possibly from the medium flowing through the acceleration chamber (12) separated liquid drops is impossible.

The acceleration camera (12) ends at one Outlet (18), to which an outlet connection (19) connects, the over e.g. a flexible connection line is to be connected to a liquid separator (22).

1 designates the reference symbol (25) a schematically drawn handle for handling the device. Switching the compressed air supply on and off can be drawn over the example Press button (24) on the handle (25).

The described device is operated as follows:

For cleaning the textile fabric is previously a cleaning liquid by means of, for example a stain cleaning gun applied been. The relevant area of the textile fabric (5) is now wet or damp and must be dried be, the existing in the textile fabric (5) Liquid also contains dissolved dirt.

The device is shown in FIG Position on the area to be dried textile fabric (5), which if necessary lies on a sieve or grid (6).

By pressing the push button a Compressed air source (21) started up and flows if necessary, heated compressed air through the supply hose (3) in the pipe socket (2) and emerges from the Slot nozzle (4). Part of the compressed air supplied flows through the area to be dried and the one below lying sieve or grid (6) and breaks in the fabric of the drying area with liquid so that the drying takes place.

The exposed area exposes the air jet opposing resistance so that a lot of air between the machining head and the specified area want to escape.

Now that the flow channel section (11) like is described above, is closed on all sides, escapes no air laterally between the processing head (1) and the textile fabric (5); that amount Air that is not through the textile fabric (5) penetrates, flows laterally through the flow channel section (11) path. Because the air flow in the flow channel (11) at least approximately parallel to the surface of the area to be dried flows, this acts wedge-shaped Flow channel section as a jet nozzle, so that further Any liquid present in this area is carried away by the air flow.

The one emerging from the flow channel section (11) Airflow enters the helical acceleration chamber (12) a. It can be seen that this acceleration chamber (12) one in the flow direction has a narrowing cross section, so that the Air flow is accelerated. The acceleration chamber (12) stands above the outlet (18), the outlet nozzle (19) and the connecting line (20) with a liquid separator (22) in connection, and it can be seen that in the Acceleration chamber (12) with a narrowing cross section the air flow is accelerated.

As is well known, a strongly curved can Flow course liquid drops from a Separate air or gas flow.

The partition (23) prevents that separated liquid drops back towards the reach the drying area, but through the air flow get carried away.

3 shows an embodiment in which the processing head (1) via a connecting piece (26) is connected to a stain cleaning gun by which is just the foremost part, i.e. the mouthpiece (27) with the emerging cleaning liquid jet (28) is drawn, the source of the cleaning liquid is denoted by (33).

With such an arrangement, the whole Clean and dry using a device that must be carried with only one hand. It should be noted that the distance between the mouthpiece (27) and the one to be machined Sufficient area of the textile fabric What is great is that the processing head (1) dries up the corresponding area should be placed flat can without the mouthpiece (27) forming an obstacle.

Figure 4 shows a complete stain cleaning gun (29) with a processing head (1) for delivery drying air via a connecting piece (26) is firmly connected to the stain cleaning gun (29). Such a spot cleaning gun (29) is in EP-A-687 762 discloses and thus a detailed is unnecessary Description of the same.

In the handle (30) of the stain cleaning gun 29 a push button (31) is arranged, by means of which the Pumping the cleaning liquid on and off that emerges from the mouthpiece (27).

With one in the stain cleaning gun (29) stored actuator arm (32) is analogous to that in the mentioned published European patent application EP-A-687 762 described the compressed air supply controlled.

It can be seen that the entire device in carried with only one hand and manipulated with only one hand becomes. The fist encloses the handle (30) with the index finger of the same hand is pressed the push button (31) and the actuating arm (32) is actuated with the thumb. This is a very compact stain cleaning device before that can be handled very easily.

Claims (7)

1. Apparatus for removing foreign matter from a textile flat structure (5) and drying same by means of an air stream, which apparatus includes a inlet (2) for pressurised air formed in a treatment head (1) to be coupled to a source (21) of pressurised air, characterised in that the treatment head (1) comprises an air outlet in form of a slotted nozzle (4) and a flow channel portion (11) for a partial quantity of air oriented at least approximately perpendicularly to the direction of the flow through the slotted nozzle (4) and communicates flow wise with an air removal outlet in the treatment head (1), and in that a planar resting surface (7) of the treatment head (1) adjoins a longitudinal edge of the slotted nozzle (4), and a recess is formed in the treatment head (1) at the opposite edge of the slotted nozzle (4) for a forming of a flow channel portion (11), which recess is followed in the direction of the flow through the flow channel portion (11) by an acceleration channel (12).
2. Apparatus according to claim 1, characterised in that the treatment head (1) comprises two side walls and the recess is encircled by an obliquely oriented surface portion (8) of the treatment head (1) adjoining the slotted nozzle (4) opposite of the planar resting surface (7) and enclosing with the planar resting surface (7) an obtuse angle, and at both sides by portions (9, 9a) of the side of the walls of which the free ends (10) are aligned with the planar resting surface (7), so that when the treatment head is placed onto a flat textile structure (5) to be treated the flow channel portion (11) is present between the surface of the flat textile structure (5), the obliquely oriented surface portion and the side wall portions (9, 9a) in form of a wedge shaped blast nozzle chamber.
3. Apparatus according to one of the preceding claims, characterised in that the acceleration channel (12) comprises a snail-like extending inner space of which the dimension of its cross-section decreases continuously in the through flow direction.
4. Apparatus according to one of the preceding claims, characterised in that the acceleration chamber (12) comprises a inlet opening (13) which is located directly adjacent the recess, which inlet opening (13) is confined at the sides by further portions (14, 14a) of the side walls of the treatment head (1) of which the free edges are aligned with the planar resting surface.
5. Apparatus according to one of the preceding claims, characterised in that the acceleration chamber (12) comprises an outlet (10) which is followed by an outlet stub (19) which extends at least approximately perpendicularly to the direction of the flow trough the acceleration chamber (12) and is to be coupled to a liquid separator (22).
6. Apparatus according to one of the preceding claims, characterised that a snail-like extending partition (23) is located in the acceleration chamber (12) which extends between the inlet opening (13) and the outlet (18) and prevents a direct rectilinear communication between the two openings (13; 18), so that a dripping back of droplets of a liquid separated from a medium flowing through the acceleration chamber (12) to the inlet opening (13) is not possible.
7. Spot removing gun with an apparatus for removing foreign matter and drying according to one of the preceding claims, characterised in that the apparatus is mounted though a carrier to the spot removing gun so that the spot removing gun forms together with said apparatus a manually portable integral operating device.

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